U.S. patent number 3,688,403 [Application Number 05/082,773] was granted by the patent office on 1972-09-05 for knife.
This patent grant is currently assigned to Bettcher Industries. Invention is credited to Louis A. Bettcher.
United States Patent |
3,688,403 |
|
September 5, 1972 |
KNIFE
Abstract
A manually held and manipulated motor drive meat product
trimming and slicing knife comprising a ring-like rotary blade of
considerably greater diameter than its axial length supported in a
handle assembly including a hand grasp portion extending radially
outwardly of the blade having an inwardly facing peripheral cutting
edge atone axial end thereof, and an annular or a semi-annular
ring-like member carried by the handle assembly within the blade
and adjustable axially of the blade adapted to bear upon the
product being cut and limit the penetration of the blade into the
product.
Inventors: |
Louis A. Bettcher (Amherst,
OH) |
Assignee: |
Bettcher Industries (Inc.,
Birmingham)
|
Family
ID: |
22173375 |
Appl.
No.: |
05/082,773 |
Filed: |
October 21, 1970 |
Current U.S.
Class: |
30/276 |
Current CPC
Class: |
B26B
25/002 (20130101) |
Current International
Class: |
B26B
25/00 (20060101); B26b 029/00 () |
Field of
Search: |
;30/276,264,286,293,283,284 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Theron E. Condon
Assistant Examiner: J. C. Peters
Attorney, Agent or Firm: Watts, Hoffmann, Fisher &
Heinke
Claims
Having thus described my invention, what I claim is:
1. A hand-manipulated knife comprising a blade supporting structure
substantially annular in shape and including a handle projecting
from one side thereof, a ring-shaped blade of short axial length
rotatably supported in said structure with a cutting edge at one
end projecting from one side of said structure and gear teeth at
its other end, a pinion adjacent to said handle in mesh with said
gear teeth on said blade for rotating said blade, a first member at
the end of said blade opposite said cutting edge connected to said
supporting structure adjacent said handle and extending therefrom
parallel with the axis of said blade, a second member offset from
the axis of said blade connected to said first member for
adjustment lengthwise of the axis of said blade, and a ring-like
gauge member having a side fixed to said second member with its
axis concentric with the axis of said blade, said ring-like gauge
member having a maximum dimension in cross section equal to about
one-eighth of the interior diameter of said blade and at least part
of its radially outer side facing in the direction of said cutting
edge being a convex arc, whereby said gauge member is cantilevered
from said supporting structure adjacent said handle, the working
area yieldable and the center of the knife open.
2. A hand-manipulated knife comprising a blade supporting structure
substantially annular in shape and including a handle projecting
from one side thereof, a ring-shaped blade of short axial length
rotatably supported in said structure with a cutting edge at one
end projecting from one side of said structure and gear teeth at
its other end, a pinion adjacent to said handle in mesh with said
gear teeth on said blade for rotating said blade, a first member at
the end of said blade opposite said cutting edge connected to said
supporting structure adjacent said handle and extending therefrom
parallel with the axis of said blade, a second member offset from
the axis of said blade and connected to said first member for
adjustment lengthwise of the axis of said blade, and a ring-like
gauge member extending about 280.degree. to 290.degree. having one
end fixed to said second member with its axis concentric with the
axis of said blade, said ring-like gauge member having a maximum
dimension in cross section equal to about one-eighth of the
interior diameter of said blade and at least part of its radially
outer side remote from said handle facing in the direction of said
cutting edge being a convex arc, whereby said gauge member is
cantilevered from said supporting structure adjacent said handle,
the working area yieldable and the center of the knife open.
3. A hand-manipulated knife comprising a blade supporting structure
substantially annular in shape and including a handle projecting
from one side thereof, a ring-shaped blade of short axial length
rotatably supported in said structure with a cutting edge at one
end projecting from one side of said structure and gear teeth at
its other end, a pinion adjacent to said handle in mesh with said
gear teeth on said blade for rotating said blade, a plate-like
first member at the end of said blade opposite said cutting edge
connected at one end to said supporting structure adjacent said
handle and extending therefrom with the plane thereof parallel with
the axis of said blade, a second member spaced from the axis of
said blade connected to said plate-like first member for adjustment
lengthwise of the axis of said blade, and a ring-like gauge member
having one side fixed to said second member with its axis
concentric with the axis of said blade, said ring-like gage member
having a maximum dimension in cross section equal to about
one-eighth of the interior diameter of said blade and at least part
of its radially outer side facing in the direction of said cutting
edge being a convex arc, whereby said gauge member is cantilevered
from said supporting structure adjacent said handle, the working
area yieldable and the center of the knife open.
4. A hand-manipulated knife comprising a blade supporting structure
substantially annular in shape and including a handle projecting
from one side thereof, a ring-shaped blade of short axial length
rotatably supported in said structure with a cutting edge at one
end projecting from one side of said structure and gear teeth at
its other end, a pinion adjacent to said handle in mesh with said
gear teeth on said blade for rotating said blade, a plate-like
first member at the end of said blade opposite said cutting edge
connected at one end to said supporting structure adjacent said
handle and extending therefrom with the plane thereof parallel with
the axis of said blade, said plate-like first member having a
longitudinal guide surface therein, a second member spaced from the
axis of said blade connected to said plate-like first member and
adjustable along said guide surface lengthwise of the axis of said
blade, said adjustable connection between said first and second
members comprising a first screw member for moving said second
member lengthwise of said guide surface on said first member and a
second screw member for selectively clamping said members together,
and a ring-like gauge member having one side fixed to said second
member with its axis concentric with the axis of said blade, said
ring-like gauge member having a maximum dimension in cross section
equal to about one-eighth of the interior diameter of said blade
and at least a part remote from said handle having its radially
outer side facing in the direction of said cutting edge being a
convex arc, whereby said gauge member is cantilevered from said
supporting structure adjacent said handle, the working area
yieldable, and the center of the knife open.
5. A gauge for a hand-manipulated knife having a blade supporting
structure substantially annular in shape and including a handle
projecting from the side thereof, a ring-like blade of short axial
length rotatably supported in the structure with a cutting edge at
one end projecting from the structure and gear teeth at its other
end, and a pinion adjacent to the handle in mesh with the gear
teeth on the blade for rotating the blade, said gauge comprising a
ring-like gauge member having a maximum diameter less than the
interior diameter of the blade of the knife and a maximum dimension
in cross section equal to about one-eighth of the interior diameter
of the blade of the knife and at least part of its radially outer
edge facing in the direction of the cutting edge of the blade of
the knife a convex arc, a first member connected to said ring-like
gauge member adjacent one side thereof and extending parallel with
the axis thereof, a second member adapted to be connected to the
supporting structure of the knife adjacent the handle thereof and
extend parallel with the axis of the blade of the knife, and means
connecting said first member to said second member for adjustment
thereof and said ring-like gauge member lengthwise of the axis of
the blade.
6. A gauge for a hand-manipulated knife having a blade supporting
structure substantially annular in shape and including a handle
projecting from the side thereof, a ring-like like blade of short
axial length rotatably supported in the structure with a cutting
edge at one end projecting from the structure and gear teeth at its
other end, and a pinion adjacent to the handle in mesh with the
gear teeth on the blade for rotating the blade, said gauge
comprising a ring-like gauge member extending about 280.degree. to
290.degree. having a maximum diameter less than the interior
diameter of the blade of the knife and a dimension in cross section
equal to about one-eighth of the interior diameter of the blade and
at least part of its radially outer edge facing in the direction of
the cutting edge of the knife a convex arc, a first member
connected to said ring-like gauge member adjacent one side thereof
and extending parallel with the axis thereof, a plate-like second
member adapted to be connected to the supporting structure of the
knife adjacent the handle thereof and extend parallel with the axis
of the blade, first screw means connected to said first and second
members for adjustment of said first member and said ring-like
gauge member lengthwise of the axis of the blade, and a second
screw means for fixedly connecting said first and second members
together.
Description
FIELD OF INVENTION
The invention relates to manually held and manipulated power driven
knives used in trimming and slicing comestible products, especially
meat, having a ring-like rotary blade of relatively short axial
length with an inwardly facing peripheral cutting edge at one end
used principally in the packing house and meat distribution
industries.
PRIOR ART
Manually held and manipulated knives having a power driven
ring-like rotary blade with an inwardly facing peripheral cutting
edge and including a, so-called, "depth control plate" are known,
but such devices have not been entirely satisfactory, being
unreliable in operation and/or interfering with the desired
manipulation of the knife, etc.
SUMMARY OF INVENTION
The invention provides a novel and improved manually held and
manipulated knife especially designed for trimming and slicing meat
products having a power driven ring-like annular blade of
relatively short axial length with a radially inwardly facing
peripheral cutting edge at one end supported in a handle assembly
and an annular, open center, or partly annular ring-like depth of
cut gauge member at least in part located in the blade and having
one side adjustably connected to the handle to provide flexibility
of the working area, and of the gauge axially of the blade for
controlling or assisting in controlling the depth of cut made by
the blade.
The invention also provides a novel and improved product thickness
gauge for attachment to a hand-held knife of the character referred
to above and having a power driven ring-like blade, which gauge
comprises an annular, open center, or partly annular ring-like
depth of cut gauge member adapted to be located at least in part
within the blade when attached to a knife and adjustable members at
one side for connecting it to a knife for adjustment axially
thereof and limited flexing of its working area during use.
The invention will be better understood and further advantages, as
well as objects, thereof will become apparent from the accompanying
drawings and the following description of the preferred embodiment
of the invention.
FIG. 1 is a plan view of a knife embodying the invention;
FIG. 2 is a side elevational view, with parts broken away and in
section approximately on the line 2--2 of FIG. 1; and
FIG. 3 is a fragmentary elevational view looking from the line 3--3
of FIG. 1.
DESCRIPTION OF PREFERRED EMBODIMENT
The knife K which forms the preferred embodiment of the invention
and shown in the drawing comprises an annular ring-like rotary
blade A of relatively short axial length and having a radially
inwardly facing peripheral cutting edge 10 at one end. The blade A
is rotatably supported in an annular member 12 of a handle assembly
B. The member 12 is attached to a hollow tubular hand group 14 by
screws 16, 18 and the blade A is rotated in the member 12 by a gear
rotatably supported in the member 14 and driven in a suitable
manner as by a flexible shaft 22 connected thereto and to an
electric motor, not shown. The gear is continuously in mesh with
annular gear teeth 24 cut in the end of the blade A opposite to the
cutting edge 10. The tubular handle member 14 projects from the
member 12 in a direction normal to the axis of rotation of the
blade A and the end facing the axis of the blade is closed by a
member 30 secured thereto by the screws 16, 18.
The apparatus thus far described is constructed and used in a
manner similar to that disclosed in U.S. Pat. No. 3,024,532, to
which reference is made for a more detailed description
thereof.
In addition to the parts thus far referred to, the knife K has a
gauge assembly, designated generally by the reference character C,
attached to the handle assembly B by the screws 16, 18. The knife K
is especially designed for trimming and slicing meat products and
the gauge assembly C is to control or assist in controlling the
thickness of the cut made by the knife blade. The gauge assembly,
as shown, comprises a plate-like support member 40 provided with
suitable apertures for detachable connection to the handle assembly
B by the screws 16, 18. Other suitable means for connecting the
gauge assembly C to the handle assembly B may be employed.
The plate-like member 40 of the gauge assembly C is provided with a
longitudinal groove 44 in its right-hand face, extending parallel
with the axis of the blade A, when attached to the handle assembly
of the knife. The member 40 is further provided with an elongated
aperture 46 opening into the bottom of the groove 44 and extending
parallel of the length of the groove, an upwardly extending section
50 of a width equal to that of the groove or slot 44 and having its
right-hand face, as viewed in the drawings, flush with the bottom
of the slot, and an angular extension section 52 at the top of the
section 50 extending toward the axis of rotation of the blade. The
annular extension section 52 of the bracket 40 has an aperture
therein for the reception of a screw 54 rotatably supported therein
against axial movement relative to the bracket. The end of the
screw 54 above the projecting section 52 of the bracket is provided
with a knurled head 56 and the opposite end is threaded into a
member 60 slidable in the groove 44 in the member 40. The member 60
is adapted to be secured in any adjusted position relative to the
member 40 by a screw 62 projecting through the slot 46 in the
member 40 and threaded into a suitable tapped aperture in the
member 60. The head of the screw 62 normally engages the left-hand
face of the member 40.
A gauge member per se in the form of an arcuate or ring-like member
66 of short axial length is secured to the bottom of the member 60
as by a screw 68, or the like. For better attachment of the member
66 to the lower end of the member 60, the top side of the member
60, as viewed in the drawings, is provided with a radial slot into
which the lower end of the member 66 projects. The bottom side of
the member 66, as viewed in the drawings, is semi-circular, as
viewed in cross section. The member 66 is supported with its axis
concentric with the axis of the blade A and the outside diameter
thereof is preferably only slightly less than that of the cutting
edge of the blade A. The construction is such that the member 66
can be adjusted axially of the axis of rotation of the blade A from
a position where the bottom side thereof is below the cutting edge
of the blade or spaced a desired distance thereabove.
The ring or arcuate member 66 of the preferred embodiment is not a
complete circle or ring. One end is connected to the adjustable
member 60 of the gauge assembly and from there the member 66
extends in a clockwise direction approximately 280.degree. to
290.degree. with its side or edge in a plane parallel with the
plane of the cutting edge of the blade. It is to be understood,
however, that the member 66 may be a complete circle or anything
less to about a semi-circle. For right-hand personnel, the part of
the knife predominately used is the upper one-third or so of the
knife, as viewed in FIG. 1.
While the size or dimensions of the member 66 are not critical the
axial dimension of the member is preferably about equal to the
axial dimension of the blade A, i.e., about one-eighth its maximum
diameter, and in cross section the radial dimension is about the
same as its axial dimension with about the lower one-half being
semi-circular to provide rounded corners on the side adjacent to
the cutting edge of the blade to facilitate the flow or passage of
product being cut thereabout and lessen the tendency of the product
to stick and adhere to the gauge member.
From the foregoing description of the preferred embodiment it will
be apparent that the objects of the invention heretofore enumerated
have been accomplished and that there has been provided a novel and
improved hand-manipulated motor driven knife of the character
mentioned especially designed for the trimming and slicing of meat
products in the packing house industry, comprising a ring-like
rotary blade and a ring-like gauge within the blade and adjustable
axially thereof to limit the penetration of the blade into a
product being cut, and a gauge of the character referred to for a
knife of the character mentioned.
While the preferred embodiment has been described in considerable
detail, it is to be understood that the invention is not limited to
the construction shown and it is the intention to hereby cover all
adaptations and modifications thereof which come within the
practice of those skilled in the art to which the invention relates
and the appended claims.
* * * * *