U.S. patent application number 11/191229 was filed with the patent office on 2007-02-01 for edge buster series round blade sharpener and the edge tracker sharpener.
Invention is credited to Jeffrey A. Harden, Kathleen Harden.
Application Number | 20070026771 11/191229 |
Document ID | / |
Family ID | 37694990 |
Filed Date | 2007-02-01 |
United States Patent
Application |
20070026771 |
Kind Code |
A1 |
Harden; Kathleen ; et
al. |
February 1, 2007 |
Edge buster series round blade sharpener and the edge tracker
sharpener
Abstract
Apparatus for sharpening, grinding or sizing a cutting edge on a
circular blade which has dulled, chipped, or needs re-sizing blades
from 21/2'' to 48'' diameter. Differs from prior art in that it
sharpens, grinds or sizes circular blades and blades with different
geometrical shaped blades. Manually or pneumatically externally
powered driven. Furthermore, it is necessary to maintain factory
blade edge angles when sharpening the edge of the blade allowing
the blade life to be greatly extended and maintain a like new
cutting edge through out the life of the circular blade. Present
invention is also unique in respect to the not heating up of the
blade edge using similar devices. The simplest and safest sharpener
of its type to operate. Also the Pneumatically Driven Machine
incorporates such a design as to sharpen blades which are of
different geometric shapes I.e. Scalloped, Wide Slotted
Inventors: |
Harden; Kathleen; (Dunlap,
TN) ; Harden; Jeffrey A.; (Dunlap, TN) |
Correspondence
Address: |
KATHLEEN HARDEN
P O BOX 217
DUNLAP
TN
37327
US
|
Family ID: |
37694990 |
Appl. No.: |
11/191229 |
Filed: |
July 27, 2005 |
Current U.S.
Class: |
451/45 |
Current CPC
Class: |
B24B 3/58 20130101; B24B
3/46 20130101 |
Class at
Publication: |
451/045 |
International
Class: |
B24B 1/00 20060101
B24B001/00 |
Claims
1-2. (canceled)
3. We claim a round blade sharpening apparatus for providing a
sharpened edge on a round, scalloped, slotted or blades with
different geometrical edge profiles, comprising: a flat base,
Gearbox Housing, Flexible Drive Shafts, a vertical angle adjustment
rail assembly, a horizontal blade diameter adjustment rail and a
pivoting arm sharpening assembly.
4. The apparatus in claim 1, is the only round blade sharpener
which offers 2 different modes of operation; manual operation
requiring no utilities, air, water or electricity to operate and
pneumatic operation requiring compressed air to operate. Either of
these two operation modes will sharpen, grind and size a particular
blade. Two machines in one.
5. The apparatus in claim 1 is the only Round Blade Sharpener that
will Sharpen Round Blades from 2'' minimum diameter to unlimited
maximum diameter.
6. The apparatus in claim 1 has a base with an 18'' or larger,
ruler attached for exact measurement of the diameter of blade to
set the vertical angle adjustment rail assembly in correct position
on the horizontal blade diameter scale. A calibrated, engraved
blade diameter scale, including a center line indicator mark, on
the base running parallel to the horizontal blade diameter
adjustment rail.
7. The apparatus in claim 1 has a horizontal blade diameter
adjustment rail which incorporates a blade diameter adjustment
slide and a blade diameter adjustment brake with handle. A blade
diameter indicator located at the base of the vertical angle
adjustment rail assembly.
8. The apparatus in claim 1 uses a pivoting arm sharpening
assembly, which houses the diamond file holder, is mounted on and
slides up and down the blade angle adjustment slide which
incorporates a blade angle adjustment brake with handle to secure a
precision angle setting.
9. The apparatus in claim 1 which uses a protractor combined with
the protractor indicator on the pivoting arm sharpening assembly to
set the correct angle in which the Round Blade Sharpener will
sharpen the blade.
10. The apparatus in claim 1 has a pivoting arm sharpening assembly
that is lowered and raised along the vertical angle adjustment rail
assembly until desired angle is reached on the protractor as
indicated by the protractor indicator and then locked into place
using a locking lever. All components are calibrated for accurate
settings.
11. The apparatus in claim 1 uses a pivoting arm sharpening
assembly which incorporates a weight attachment shaft and a
prescribed weight cylinder which may be moved along the shaft and
set by tightening inserted thumb screw, which is used as a variable
tension device when sharpening the blade.
12. The apparatus in claim 9 in which the pivoting arm sharpening
assembly houses a diamond file housing designed to pivot on its on
axis up to 125.degree.. This allows complete conformity to the
blade being sharpened. (I.e. Slightly Warped Blade). The ratio of
reciprocating strokes versus a single revolution of the blade in
the manual mode is 20:1 and 200:1 in the pneumatic mode.
13. The apparatus in claim 10 uses a diamond file housing is driven
by using flexible drive shaft cables connected to the pivoting arm
sharpening assembly and the gearbox housing.
14. The apparatus in claim 1, to have a gearbox housing with an
attached 3 way pneumatic valve, water separator and regulator
assembly, toggle brake switch with attached polypropylene bumper
and shaft assembly, horizontal transition shaft, attached flexible
drive shaft cables, pivot locking pin and vertical shaft.
15. The apparatus in claim 12, which uses a crank handle that can
be turned either direction providing a means of power in the manual
mode. There is an attached female receptacle shaft assembled to
handle that mates with a male T-slot of the top end of the vertical
shaft.
16. The apparatus in claim 13, with a blade nut which threads on
the threaded portion of the male slotted vertical shaft. The nut
holds the blade securely onto the blade support hub.
17. The apparatus in claim 14 with a crank handle attached to a
vertical shaft which is mounted to a larger bevel gear it meshes
with a smaller pinion gear that is mounted on the horizontal
transition shaft which effectively creates an approximate 3:1
increase of the output shaft's rpm's.
18. The apparatus in claim 16 with an output shaft that is attached
to a flexible drive cable that is routed through a series of
flexible drive shaft eyelets. The opposite end of the flexible
drive shaft is connected by attached integrally mounted couplings
and set screws to the connector shaft/cam shaft which is connected
to the cam linkage arm which connects to the diamond file holder
all of these components are mounted on the pivot arm sharpening
assembly.
19. The apparatus in claim 12 which uses a toggle brake switch on
the Gearbox housing. Brake is off for manual mode and brake is on
for Pneumatic mode. The toggle brake switch in the on position
allows for controlled rate of compression contact to the vertical
shaft by the polypropylene bumper to further reduce the back lash
of the vertical shaft to nearly zero. This allows the precision
sharpening of the edges of blade different geometrical profiles.
The toggle brake switch in the off position allows the operator to
effortlessly turn the crank handle in the manual mode, where near
zero back lash precision is not required.
20. The apparatus in claim 1 uses a removable clear plastic blade
safety cover and metal shroud which closes and opens. Allowing the
blade to be sharpened with safety being exercised.
21. The apparatus in claim 1 does not heat the blade disturbing the
metallurgy of the blade.
22. The apparatus in claim 1, that the combination of precision
control in the areas of: prescribed weight, reciprocating file
strokes, revolution of blade sharpened, ratios between
reciprocating strokes and revolutions of the blade sharpened,
ability of the novice operator to match any angles including
factory angles allows the round blade sharpener to produce razor
sharp durable edges without building up friction causing the blade
to heat up and destroy the tempered edge of the blade. "We don't
grind we sharpen the blade edge. Causing blade life to extend to 25
times +. This applies to either mode of operation of the round
blade sharpener.
23. The apparatus in claim 1 uses a custom modular air motor gear
box design with a slip lock disengagement coupling that is used to
divert the power source and speed s of operation to the necessary
mode demanded by the blade chosen
24. The apparatus in claim 1 has a quick change flexible drive
shaft system that allows the novice operator to make operating mode
conversion quick and simple.
25. The apparatus in claim 2 is totally portable round blade
sharpener in the manual mode no air, water or electricity is ever
required.
26. The apparatus in claim 1 requires no maintenance on this round
blade sharpener ever! Making it Maintenance Free.
27. The apparatus in claim 1 uses a blade arbor selection system
allowing the novice operator to easily select the proper arbor to
match the bore through on the blade chosen to be sharpened.
28. The apparatus in claim 1 has mounted spring loaded grinded tool
to size the blade to a specific diameter and or grind minor nicks
and abrasions in blades by the novice user as well.
Description
BACKGROUND OF THE INVENTION
[0001] (1) Field of the Invention
[0002] The present invention relates to an improved Round Blade
Sharpener apparatus for sharpening, grinding and or sizing a
cutting edge on a circular blade which has dulled, chipped, or
needs to be re-sized to a specific out side diameter. Present
invention differs from prior art in that it sharpens, grinds, and
re-sizes where prior art grinds to sharpen. Present invention
differs from prior art in that it sharpens, grinds or sizes
circular blades, blades with different geometrical edge profiles
and blades diameter from 21/2'' to 48''. Present invention may be
manually driven or driven by other externally powered drive
apparatuses and not limited to a pneumatic drive as will be
described in this application for patent. Present invention differs
from prior art in that we use Flexible Drive Cables.
[0003] After extended use in a plant, shop or any high volume
cutting facility it becomes necessary to grind small indented or
chipped areas and or use to size the diameter of the blade to match
mating blades in a straight line gang arrangement. It also is
necessary to realign and sharpen the microscopic edge of these
blades. It is important to maintain a constant and correct amount
of pressure in the sharpening, grinding and or sizing of the
circular blade being sharpened. Furthermore, it is necessary to
maintain factory blade edge angles when sharpening the edge of the
blade allowing the blade life to be greatly extended and maintain a
like new cutting edge through out the life of the circular blade.
Present invention is also unique in respect to the not heating up
of the blade edge using similar devices. Heating the blade
(+304.degree. F.) will destroy the temper of the blade metallurgy
causing sharp edge life to diminish as well as causing the edge to
become brittle promoting premature blade edge chipping. Present
invention can never cause such heat and friction and this is a
distinct difference from previous devices. Previous art generates
heat that can destroy the temper of the blade edge. The present
invention will also be the simplest and safest sharpener of its
type to operate. This invention was designed for high volume
circular blade sharpening, grinding and sizing in a processing or
manufacturing plant but could also be used in smaller facilities as
well (Poultry, Meat, Rubber Textile Etc.). Previous sharpening
device designed for these type applications were designed around a
grinding format not necessarily sharpening.
[0004] The round blades sharpener incorporates a mounted adjustable
grinder tool that incorporates an adjustable spring load file head
and post that is adjustable and incorporates a mounted base. This
is to either size blades to a certain diameter and to grind out
minor nicks and abrasions. This device folds and locks out of the
way when not in use and is very unique in any comparison of
previous inventions. Art devices remove excessive amounts of
material; neither do they have an accurate method of maintaining
factory angels or sizing a circular blade to a specific outside
diameter.
[0005] The round blade sharpener embodies a small blade adaptor
assembly that uses an interchangeable thread on adaptor that the
novice user simply threads onto the shaft. A small drive handle and
small blade nut is supplied to complete the adaptor kit. This will
accommodate the 2''-4'' smaller size blade which can be sharpened
by the novice user with the same precision as the larger blades.
This small blade adaptor assembly will also function with the
smaller blade edges of different geometric profile as well. This
feature again truly sets the new invention apart from the prior
inventions. These machines have a history of lost time accidents in
plant environments. The previous sharpening devices have involved
complex implements and set up devices not lending operation to the
novice operator. Also the pneumatically driven machine incorporates
such a design as to sharpen blades which are of different geometric
shapes I.e. Scalloped, Wide Slotted (Typically used in Meat and
Poultry although not limited to these particular shapes or
industries) The Round Blade Sharpener can be converted using 5
simples steps by the novice user from the manual mode of operation
and or the pneumatically driven mode of operation. This is not
found on any previous inventions and is one of the single most
unique features described here on this application for patent.
[0006] (2) Description of Related Art
[0007] Circular Blade Sharpening Device--U.S. Pat. No. 4,672,776
Jun. 16, 1987 Inventor--McCullough This device is used on a rotary
meat cutting knife (Circular Cutting Blade). Prior art has no
ability to maintain factory edge angle, convert to manual mode, or
sharpen blades with different geometrical profile.
[0008] Grinding Machine for Circular Blades--U.S. Pat. No.
2,526,822 Dec. 6, 1946 Inventor--Leach This device is used to
sharpen the edge of a Plow Disc. This further illustrates our point
of grinding not sharpening a round blade as this machine could
never work hold or maintain factory angles and or tolerances of
edges we are obtaining on our new invention.
[0009] Machine for Grinding and Sharpening Saw Blades--U.S. Pat.
No. 2,497,775 Uses Drive Shafts and Drive Pulleys where present
invention uses Flexible Drive Cables. No manual mode, inability to
convert to sharpen blade edges of different geometrical
profile.
[0010] Sharpening Device for Slicing-Machine Knives--U.S. Pat. No.
1,168,379--Inventor De Groot Present invention is an improvement
from this prior art in many ways, old art has no accurate way of
determining correct angles. Prior art will not convert to sharpen
blades of different geometrical profiles.
[0011] Device for Grinding Disks--U.S. Pat. No. 723,051 Mar. 17,
1908--Inventor Shipp This device sharpens or grinds the edges
concavo-convex disc. Present invention is an improvement from this
prior art in many ways, old art has no accurate way of determining
correct angles. Prior art has an inability to hold an accurate
angle. Prior art will not convert to sharpen blades of flat round
edges or blades with different geometrical profiles.
[0012] Device designed for sharpening discs.--U.S. Pat. No. 681,440
Aug. 27, 1901 Inventor--Clizbe This device grinds or sharpens
Harrow Discs and Revolving Plow Cutters. Prior art has no ability
to maintain factory edge angle, convert to manual mode, or sharpen
blades with different geometrical profile
[0013] Circular Blade Sharpening Device--U.S. Pat. No. 4,373,302
Feb. 15, 1983 Inventor--Darby Sharpener Apparatus for large
diameter comparatively narrow width circular blades. Prior art has
no ability to maintain factory edge angle, convert to manual mode,
or sharpen blades with different geometrical profile
[0014] The new Invention is an improvement over all the above
mentioned prior inventions in that the new Invention can Sharpen
Blades with different geometrical shapes, Scalloped, indented etc.
Flexible Drive Cables are used on Present Invention. This options
is not available on any of the prior art.
BRIEF SUMMARY OF THE INVENTION
[0015] The present invention provides a blade sharpening, grinding
and sizing apparatus. The present invention offers two separate
devices one is a manually operated machine which requires no air,
water or electricity to operate. The other device requires
compressed air to operate but can also be quickly converted to the
manual
operation mode as well. Either of the two devices will sharpen,
grind and size a particular blade.
[0016] The invention incorporates a crank handle that can be turned
in either direction. The crank handle can be quickly removed and
re-mounted into a male T-Slot. The crank handle attaches to a
vertical shaft which is mounted to a larger bevel gear it meshes
with a smaller pinion gear that is mounted on the horizontal
transition shaft which effectively creates an approximate 3:1
increase of the output shaft's rpm's. The output shaft is attached
to a flexible drive cable that is routed through a series of
flexible drive shaft eyelets. The opposite end of the flexible
drive shaft is connected by attached collar and set screw to the
connector shaft/cam shaft which is connected to the cam linkage arm
which connects to the diamond file holder all of these components
are mounted on the pivot rail.
[0017] The diamond file holder is mounted on the pivot arm slide.
Typically a 600 grit file (Polish) is mounted in the diamond file
holder. The diamond file is designed to pivot on its on axis up to
125.degree. this allows complete conformity to the blade being
sharpened. (I.e. Slightly Warped Blade). This pivot rail and its
component parts are mounted to a vertical angle adjustment rail
assembly incorporating the pivot arm mounting bracket and
protractor assembly.
[0018] The angle adjustment rail incorporates an angle adjustment
slide and an angle adjustment brake. The pivot arm mounting bracket
is mounted to the angle adjustment slide. The angle adjustment rail
assembly is mounted to a blade adjustment rail. The blade
adjustment rail incorporates a blade adjustment slide and a blade
adjustment brake. The vertical angle adjustment rail assembly is
mounted to the blade adjustment slide. The device also incorporates
a weight arm attachment attached at the base of the pivot arm
mounting bracket which is used as a variable tension device when
sharpening the circular blade. This invention incorporates a
removable clear plastic blade safety cover to help protect the
operator from the sharp edge of the blade being sharpened. To begin
manual sharpening processes remove the crank handle and place in
aside location. Remove the blade safety cover and place in aside
location. Chose the corresponding arbor to match the through bore
of the blade chosen to sharpen. Engage locking pin at vertical
shaft to secure vertical angle adjustment rail into place. Remove
blade nut in a counter clock wise motion and place in aside
location. Select proper arbor that matches the ID bore of the blade
being sharpened and install it onto the projected portion of the
threaded shaft until it rest flat and flush on the blade support.
Install the blade to be sharpened, making sure it is flat and
secure around the arbor. Re-install blade nut using clockwise
motion tighten firmly. Reinstall blade safety cover. Re-install
crank handle. Locate the blade adjustment slide and the blade
adjustment brake (Yellow Handle).
[0019] This assembly allows us to set the proper blade diameter.
Disengage blade adjustment brake and using the black plastic handle
located on the blade adjustment slide select the desired blade
diameter using the blade diameter indicator gauge located on the
base in directly in front of the blade adjustment slide. Use the
arrow on the diameter indicator for precise location. Locate the
angle adjustment brake and secure firmly. (Yellow Handle) Disengage
locking pin located on the rear side of the pivot arm mounting
bracket. Using the black plastic contoured safety handle located on
the top side of the pivot rail gently rest the diamond file onto
the edge of the blade to be sharpened. (Determine by various means
the angle of the edge of the blade to be sharpened.) Locate angle
adjustment slide and angle adjustment brake (Yellow Handle). These
two components are located on the vertical angle adjustment rail
assembly. Loosen the angle adjustment brake and slide the angle
adjustment slide up or down noticing the blade diameter indicators
changing position on the protractor. Once the point of the blade
diameter indicator has reached the desired degree of angle hold
firmly and tighten the angle adjustment brake. Adjust the weight to
the desired tension and secure with the supplied thumb screw.
Locate the crank handle and begin turning in either a clockwise or
counter clockwise direction.
[0020] Usually 4-5 turns per side are sufficient. As the crank
handle turns the diamond file located on the pivot arm slide
reciprocates 3 times per single blade revolution. The diamond file
is also pivoting on its on axis as the blade is turning and file is
reciprocating. This motion combined with the proper tension
produces an extremely sharp edge while only removing microscopic
amounts of material from the blade edge itself. (This allows us to
achieve one of our design goals of greatly extending the life of
the blade. We are sharpening the blade instead of grinding the
blade which allows us to achieve another design goal of creating a
durable edge that is sharper than an actual new blade from the
manufacturer, the manual operation and low rpm's allow us to
achieve still another design goal of not heating the blade and
destroying the temper of the blade.) Once the blades edge is
sharpened locate the contoured safety handle and lift the pivot arm
assembly back to the vertical position until you hear it click
indicating its position is secure. (Always remember to count the
number of revolutions per side a black dry erase pen is provided to
mark the blade for aiding in counting these revolutions).
[0021] Locate the crank handle and repeat the blade instillation
procedures turning the blade to the opposite side and repeating the
sharpening procedures as preformed on the initial side of the
blade. The described manual mode of operation can be manufactured
as a stand alone unit or as an integral manual mode of the
pneumatically driven round blade sharpening device. The round blade
sharpener also embodies a small blade adaptor assembly which will
allow the novice operator to sharpen either blades smooth edge as
well as blade with different geometric edge profiles on blade
diameters of 2''-4''. This adaptation requires not tools and takes
only a minuet to set up. Pneumatically Driven Device present
invention incorporates the ability to function as the Manually
Driven Device and also function as a device which can sharpen the
blade edges which could be of a different geometric shape. I.e.
Scalloped, Wide Slotted (Typically used in Meat and poultry
automatic cutting operations but not limited to a particular blade
shape or industry.) To convert manual mode to automatic perform the
following steps. 1. Remove Crank Handle and Store 2. Slide coupling
sleeve onto transition shaft 3. Position Brake Handle to "On
Position" 4. Remove Black larger Pneumatic Flexible Drive Cable
from Connector Shaft/Cam Shaft. Remove smaller Gold Manual Flexible
Drive Shaft from Flexible Shaft Storage Pin Connect the Black
larger Pneumatic Flexible Drive Cable to the Flexible Shaft Storage
Pin and secure on flat portion of Connector Shaft/Cam Shaft using
provided Allen Wrench and Set Screw. Connect the smaller Gold
Manual Flexible Drive Shaft onto the Flexible Shaft Storage Pin.
Remove the opposite end of the smaller Gold Flexible Drive Shaft
located on the out put end of the Transition Shaft using the set
screw and provided Allen Wrench and simply lay it aside in its non
functional state. 5.
[0022] Select appropriate sharpening head assembly (For this
Scalloped Blade the Round Stone Head Assembly should be selected.);
remove single Allen Screw with provided Allen Wrench. Slide
assembly's Linear Slide track wheels into vertical grove, aligning
the holes and re-attaching with removed Allen Screw using provided
Allen Wrench. (Magnet located in proportion for storage of wrenches
and screws for quicker change over times) This completes the
conversion process from Manual to Pneumatic Driven Mode. Select he
desired Scalloped Blade to be sharpened. Select the corresponding
Arbor. Place lade to be sharpened on to shaft and flush with Arbor.
Assemble Blade Nut securely. Assemble Blade Safety Cover. (Never
Assemble Crank Handle while device in the Pneumatic Mode of
operation.) Locate 3-Way Pneumatic Control Valve. Locate Air Water
Separator drain any water in bowl using manual drain plug locate on
bottom of collection bowl. Locate Locking Pin located on Angle
Adjustment Rail Assembly. Disengage Locking Pin and lower the Angle
Adjustment Rail with the Round Stone Head Assembly onto the
assembled blade edge. Locate the Dry Erase Marking Pin and Place a
mark directly under the Round Sharpening Stone. (This is the
indicating mark each Scalloped Blade has to be sharpened one
complete revolution in each direction. This assures that that
trigonometry of the Scalloped Blades point stays at the 90.degree.
in line position as the Sharp point and point alignment is crucial
for this and other blades of this type) Locate the Valve Control
Handle and move it left to engage the counter clockwise rotation of
the Vertical Drive Shaft and blade. After one complete revolution
back to the indicating mark on the blade.
[0023] Locate the Valve Handle and place in the neutral position
(center) then move the Valve Handle to the right and allow one
complete revolution again stopping at the indicating mark. Remove
Blade Safety Cover, Blade Nut and turn blade to opposite side and
repeat the procedures called for on the first side. Once these
steps are completed the Scalloped Blade is ready to be put back
into operation.
BRIEF DESCRIPTION OF SEVERAL VIEWS OF THE DRAWINGS
[0024] FIG. 1 "Deleted" Front View Manual Round Blade Sharpener
[0025] FIG. 2 "Deleted" Top View Manual Round Blade Sharpener
[0026] FIG. 3 "Deleted" Right End View Manual Round Blade
Sharpener
[0027] FIG. 4 "Deleted" Top View Pneumatic Round Blade
Sharpener
[0028] FIG. 5 "Deleted" Front View Pneumatic Round Blade
Sharpener
[0029] FIG. 6 "New Sheet" Round Blade Sharpener Manual Mode Front
View
[0030] FIG. 7 "New Sheet" Round Blade Sharpener Manual Mode Top
View
[0031] FIG. 8 "New Sheet" Calibrated Engraved Blade Diameter Scale
exploded Top View
[0032] FIG. 9 "New Sheet" Pivot Rail Assembly Top View
[0033] FIG. 10 "New Sheet" Adjustable Grinder Tool Over View, Side
View and Front View
[0034] FIG. 11 "New Sheet" Round Blade Sharpener Pneumatic Mode
Front View
[0035] FIG. 12 "New Sheet" Drive Cable Diagram Pneumatic Mode Top
View
[0036] FIG. 13 "New Sheet" Round Blade Sharpener Pneumatic Mode Top
View
[0037] FIG. 14 "New Sheet" Round Blade Sharpener Manual Mode End
View
[0038] FIG. 15 "New Sheet" Front View Gearbox Assembly with Front
Gearbox Housing Plate Removed
[0039] FIG. 16 "New Sheet" Air Motor, Gearbox and Couplings Top
View
[0040] FIG. 17 "New Sheet" Small Blade Adapter Exploded Front
View
[0041] FIG. 18 "New Sheet" Scalloped Blade and Round Blade Top
View
[0042] FIG. 19 "New Sheet" Round Sharpening Head and India Stone
Assembly Side View--End View
[0043] FIG. 20 "New Sheet" Diamond File Holder Assembly and Diamond
Stone Side View--End View
DETAILED DESCRIPTION OF THE INVENTION
[0044] In describing the preferred embodiment of the invention
illustrated in the drawings, specific terminology will be resorted
to for the sake of clarity. However the invention is not intended
to be limited to the specific terms so selected and it is to be
understood that each specific term includes all technical
equivalents which operate in a similar manner to accomplish a
similar purpose.
[0045] With reference to the drawings, FIGS. 6-20 and in particular
a round blade sharpener embodying the teachings of the subject
invention is generally designated as 1 with reference to its
orientation in FIGS. 6, 11. The round blade sharpener includes a
rectangular aluminum base 2. The base 2 include components which
comprise and make up the round blade sharpener 1. The round blade
sharpener 1 incorporates 4 each adjustable mounting feet 3 for
leveling a crank handle 4 that can be turned in either direction.
FIG. 6 The crank handle 4 can be quickly removed and re-mounted
female receptacle shaft 5 located on opposite end of crank handle 4
assembled with a single 3/32'' set screw 6 onto a male T-slot
receptacle 7. The arbor system allows the operator to choose the
correct arbor that matches the through bore of the blade chosen to
sharpen. There are standard sizes and custom per end user.
[0046] FIG. 14 The crank handle 4 attaches to a vertical shaft 8
which is mounted in a upper bearing and housing assembly 9 FIG. 17
and lower bearing and housing assembly 10 which is mounted to a
large bevel gear 11 it meshes with a small pinion gear 12 that is
mounted on the horizontal transition shaft 13 which is mounted
through two each bronzoil bushings 14 FIG. 15 for precision and
support this effectively creates an approximate 3:1 increase of the
output projection of the horizontal transition shaft's 13 rpm's
which is attached to a gold flexible drive shaft 15 with an
integrally mounted coupling 16 on each end using a single 3/32''
set screw 6 FIG. 6 that is routed through a series of flexible
drive shaft eyelets 17 The opposite end of the gold flexible drive
shaft 15 is connected by an integrally mounted coupling 16 and
3/32'' set screw 6 using the 3/32'' alien wrench to secure it to
the connector shaft/cam shaft 19 which is connected to the cam
linkage arm 20 connected to the connector shaft/cam shaft 19 via a
threaded rod end bearing 21 using a 3/16' alien machine bolt 22
which screws into a threaded hole 23 on the flat portion of the
connector shaft/cam shaft 19 a dual threaded swivel 24 which
connects to the diamond file holder 25 via a matched bored and
threaded hole 26 FIG. 13 which is attached to the vertical linear
slide bearing 27 using 2 each additional 3/16'' machined alien
machine bolts 22 all of these components are mounted on the pivot
rail 28 which incorporates a plastic contoured lifting handle 29
FIG. 17 all of which is mounted on a pivot shaft pin 30 which is
supported by 2 each nylon bushing assemblies 31 and secured on the
rear side of the pivot shaft pin with a flat snap ring 32. A pivot
locking pin 33 is located on the rear side of the pivot arm
mounting bracket 34. The diamond file holder 25 is mounted on the
Vertical Linear Slide Bar 27.
[0047] The diamond file 36 is mounted in the diamond file holder
25. The diamond file 36 is easily mounted or unmounted by removing
2 each file top plate thumb screws 37 and file top plate 38 FIG.
20. This pivot rail 28 and its component parts are mounted to a
vertical angle adjustment rail assembly 39 incorporating the pivot
arm mounting bracket 34 and protractor 40. and protractor indicator
41. The pivot arm 28 incorporates a blade angle adjustment slide 43
FIG. 7, 11 and a blade angle adjustment brake 44 which has a blade
angle adjustment brake handle 45 FIG. 6. The pivot arm mounting
bracket 34 is mounted to the blade angle adjustment slide 43. The
pivot arm 28 is mounted to a horizontal blade diameter adjustment
rail 46. The horizontal blade diameter adjustment rail 46
incorporates a blade diameter adjustment slide 47 and a blade
diameter adjustment brake 48. and a blade diameter brake handle 49
FIG. 13.
[0048] The pivot rail 28 is mounted to the blade diameter
adjustment slide 47. A black plastic handle 50 is mounted to assist
in adjusting the diameter it is threaded and screwed into the blade
diameter adjustment slide 47 and is removable for storage.
[0049] The yellow blade diameter indicator 51 is mounted onto the
vertical angle adjustment rail assembly 39 and is used to set the
desired blade diameter following the calibrated engraved blade
diameter scale 52 and center line (CL) indicator line 53. This is
machine scribed into the base 2. The round blade sharpener 1 also
incorporates a weight attachment shaft 54 attached at the base of
the pivot arm mounting bracket 34 a weight cylinder 55 that is
bored to match the weight adjustment shaft 54 diameter is slid onto
the weight adjustment shaft 54 at the desired tension setting and
secured by tightening the weight tension thumb screw 56 FIG. 7, 11.
The round blade sharpener 1 incorporates a removable clear plastic
blade safety cover 57 that is made to such a diameter that it will
mount on the top of the blade safety shroud 58 which is bolted to
the blade safety shroud mounting bracket 59 with two nylon slotted
screws. The blade safety shroud mounting bracket 59 is mounted to
the gear box housing top plate 61 which incorporates upper bearing
and housing assembly 9. The projected portion of the vertical shaft
8 allows the blade support hub 62 which incorporates a hub that is
bored and key way to match the bore of the vertical shaft 8 it is
secures with a 1/8'' set screw. The top projected threaded end of
the vertical shaft 8 FIG. 17, 7 is threaded 31/2'' and the end is
slotted male T-slot receptacle 7 to accept the matching female
receptacle 5 on crank handle 4. The projected threaded end of the
vertical shaft 8 accepts the threaded blade nut 64 used to secure
the blade to be sharpened FIG. 14. A vertical shaft locking pin 65
is assembled on to right gear box housing side plate 66 FIG. 6, 15.
The gear box housing top plate 61 is mounted onto the front gear
box housing plate 67, rear gearbox housing plate 68 FIG. 7, 14,
left gear box housing side plate 69 FIG. 15 and the right gear box
housing side plate 65 FIG. 6 these are bolted together using 18
each 10-32 machine screws 70 FIG. 14.
[0050] The entire assembly is bolted to the base using 8 additional
1/4'' alien machine screws 76 through the bottom side the base 2
FIG. 14. A lifting handle 71 is bolted to the base 2 using 4 each
3/16'' allen machine bolts 22 FIG. 7,6. The round blade sharpener
embodies a small blade adaptor assembly 119 that incorporates a
thread on adaptor 120 small drive handle 121 and a small blade nut
122 that will work in either mode of the round blade sharpener 1
FIG. 17, 6. This is will allow the novice operator to sharpen both
smooth blades 73 edge as well as blades with different geometric
edge profiles 72 FIG. 18. These blades are illustrated on drawing
FIG. 18 to show an example of each type blade.
[0051] To sharpen blades with different geometric edge profiles 72
apply, adapt, disassemble and or assemble the necessary embodiments
as shall be described and furnished to convert this round blade
sharpener 1 to perform the sharpening task on the edges of blades
of different geometric profiles 72 FIG. 18. The completion of the
necessary steps of embodiments will in affect through a conversion
of said adaptations create the necessary environment as to allow
the before mentioned round blade sharpener to execute and perform a
totally different task in it's state of new conversion capable of
sharpening blades of different geometric edge profile 72. I.e.
blade, scalloped 40.degree. intersecting angels 73 FIG. 18.
[0052] The air motor assembly 74 is mounted to the pre drilled
holes in the base utilizing a bottom spacer 75, 4 each 1/4'' alien
machine screws 76 and 2 each 3/16'' alien machine bolts 22. The air
motor assembly 74 is mounted and also supported by a motor shroud
plate 77. The air motor assembly 74 is coupled to a reduced back
lash 100:1 speed reducer 78 using a 030Love joy jaw coupling 79 1/2
mounted on output shaft of air motor assembly the other mounted on
the input shaft of the reduced back lash 100:1 speed reducer 82.
The right angle shaft of the Reduced back lash 100:1 speed reducer
83 is connected to the horizontal transition shaft 13 utilizing a
slip lock coupling 84 which is mounted on the right angle output
shaft of the reduced back lash 100:1 speed Reducer 78 this assembly
is mounted onto a gear box assembly mounting base 86 using 4 each
1/4'' allen machine screws 76. The black heavy duty flexible drive
shaft 87 is mounted to the parallel out put shaft 88 of the reduced
back lash 100:1 speed reducer 78 using a heavy duty integrally
mounted coupling 89 using 3/32'' set screw 6 and 3/32'' allen
wrench FIG. 16. The black heavy duty flexible drive shaft 87 is
threaded through a single eyelet stanchion 90 mounted on to base
using 2 each 1/4'' allen machine screws 76 using 1/4'' allen wrench
to secure which assists In routing the opposite end of the black
heavy duty flexible drive shaft 87 to the connector shaft/cam shaft
19 and assembled using the integrally mounted coupling 16 and
secured with a 3/32'' set screw 6 using the 3/32'' allen wrench.
The vertical shaft toggle brake switch 92 FIG. 11 located in the
top quadrant of the left gear box housing side plate 69 FIG. 15. It
is threaded and secured on both inside and outside of the Left gear
box housing side plate 69 FIG. 15 and with two each flat switch
nuts the engagement moving to the ON position cams an attached
polypropylene bumper & shaft assembly 93 and allows for a
controlled rate of compression contact to the vertical shaft 8 FIG.
11,14 to further reduce the back lash of the vertical shaft 8 to
allow the precision sharpening of the edges of blades of different
geometric edge profile 72 FIG. 18.
[0053] The off position disengages in reverse cam motion to relief
the vertical shaft 8 FIG. 14 of the before described compression.
The off position should be used in the before described embodiments
before the conversion of said necessary embodiments or "manual
operational mode" of the round blade sharpener 1 FIG. 6.
[0054] Locate vertical linear slide bearing 27 with diamond file
holder 25 FIG. 17 see 1 each 1/4'' allen machine screw 76 used to
attach threaded rod end bearing 21 to connector shaft/cam shaft 19.
Using provided 1/4'' allen wrench remove the 1/4'' Allen machine
screw 76. Place this screw on magnetic screw holder. Grasp diamond
file holder 25 and lift up and through the grooved pivot arm slot
109 FIG. 17 and place in storage box. Locate provided round file
sharpening head 96 with pivot arm slide 35 and threaded rod end
bearing 21 attached. Assemble in reverse manner as diamond file
holder 25 was dis-assembled using 1/4'' allen machine screw 76
using the 1/4'' allen wrench FIG. 19,7. See un attached diamond
file--600 grit 36, unattached diamond file--400 grit 97 FIG. 20 and
unattached round india stone assembly 98 FIG. 19 See the 18'' steel
ruler 99 FIG. 7 to measure diameter of blade. Locate the blade
diameter indicator line 51 FIG. 8. When sharpening the blade edge
of different geometric profile 72 FIG. 18 the blade diameter
indicator 51 must always be moved To the CL indicator line 53 FIG.
8. Locate 3 way pneumatic valve 100 on the front gear box housing
plate 67 attached with 2 each 3/16'' allen machine screws 22 FIG.
11 see A type airline connector 110 see connector air hose 111
locate 3 way pneumatic valve handle 101 integrally mounted to 3 way
pneumatic control valve 100. See water separator & regulator
assembly 102 located on rear gear box housing plate 68 mounted with
2 each 3/16'' allen machine screws 22. See manual drain valve
located on bottom of the water separator & regulator assembly
102. See pressure air lines 104 2 each, air lines 2 each and
pressure lines water separator 106. Press--lock air fittings 107 12
each FIG. 11.
[0055] Adjustable grinder tool 114 to allow the novice operator to
size or quickly grind out minor nicks and abrasions incorporating a
spring loaded file head 115. This to is mounted to the base support
and slide 2 with 3 each 1/4'' allen machine Screws 76. It also
incorporates a base 116 T-handle screw 117 and a vertical mounting
post 118 all supporting rigidly the spring loaded file head 115
FIG. 10.
* * * * *