U.S. patent number 3,827,820 [Application Number 05/327,646] was granted by the patent office on 1974-08-06 for drill dispensing container.
Invention is credited to John T. Hoffman.
United States Patent |
3,827,820 |
Hoffman |
August 6, 1974 |
**Please see images for:
( Certificate of Correction ) ** |
DRILL DISPENSING CONTAINER
Abstract
A drill dispensing container with base plate having a central
shaft receiving hole and holder with depending shaft for rotary
motion therewithin. The plate has an axial alignment mark and three
spring-loaded ball bearings radially disposed to the mark. The
plate has axial cylindrical ball receiving pockets with partially
covering lips for limiting bearing travel, and has a concentric
recess forming an external rim of sufficient depth that extending
bearings do not pass the plane thereof. The holder has through
drill-receiving apertures axially disposed therewithin about three
concentric circles which are staggered so that no two apertures are
aligned along a common holder radius. The holder includes indicia
for values of drills carried therewithin, each being radially
co-aligned with its corresponding aperture. Indexing means
positively co-align the indicia to the mark. Axial shaft motion
with respect to the plate is restricted via a circumferential shaft
groove restrained by a spring-biased bearing directed thereagainst,
the bearing being housed within a radial aperture engaging with the
hole. A set screw directs the bearing against the groove,
permitting rotation, and restricting axial shaft motion with
respect to the plate. The container is indexed via a separate
spring loaded bearing disposed on the rim engaging within one of
several indentations on the holder surface which faces the plate.
The indentations are circularly located having its center at the
holder axis, and are at least equal to the total through
apertures.
Inventors: |
Hoffman; John T. (Allentown,
PA) |
Family
ID: |
26869121 |
Appl.
No.: |
05/327,646 |
Filed: |
January 29, 1973 |
Related U.S. Patent Documents
|
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
|
173418 |
Aug 20, 1971 |
3727771 |
Apr 17, 1973 |
|
|
Current U.S.
Class: |
403/165; 403/321;
206/379; 403/328 |
Current CPC
Class: |
B25H
3/003 (20130101); Y10T 403/604 (20150115); Y10T
403/32983 (20150115); Y10T 403/59 (20150115) |
Current International
Class: |
B25H
3/00 (20060101); B65d 085/20 () |
Field of
Search: |
;206/17,42,66 ;287/20,23
;211/69 ;403/165,321,328 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Dixson, Jr.; William T.
Attorney, Agent or Firm: Fisher, Esq.; Fred
Parent Case Text
CROSS-REFERENCE TO RELATED APPLICATION
This is a division of application Ser. No. 173,418 filed Aug. 20,
1971, now U.S. Pat. No. 3,727,771, issued Apr. 17, 1973.
Claims
What is claimed is:
1. In combination,
a. a shaft having a circumferentially disposed groove therein;
b. a base plate having a hole therewithin for receiving said shaft,
said base plate having at least one perpendicular aperture engaging
said shaft receiving hole;
c. a spring biased ball bearing housed within each of said
apertures; and
d. set screw means within each of said apertures directing the
corresponding spring biased ball bearing against said groove and
prohibiting axial motion therebetween.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to drill dispensing containers and, in
particular, to such containers which positively identify a selected
drill. In addition, the invention relates to devices including a
shaft, and a base plate having a shaft hole, for permitting
rotation of the shaft with respect to the plate while restricting
axial motion therebetween. Accordingly, the general objects of this
invention are to provide new and improved devices of such
character.
The invention is directed to drill dispensing containers of the
type adapted to accommodate a plurality of drills of different
sizes and which provide for the selection of appropriate drills
from the container by means of an indexing device thereon. The
primary purpose of the invention is to provide a novel drill
container which permits quick selection of a drill of a desired
size.
2. Description of the Prior Art
In accordance with a novelty search performed on behalf of the
inventor, and directed to a drill holder and base, wherein by
rotation an alignment mark is set at indicia raising a desired
drill slightly, the following patents of interest were found: U.S.
Pat. Nos. 141,934, Lamb, Aug. 19, 1873; 2,002,983, Johnson, May 28,
1935; 2,351,815, Jensen, June 20, 1944; 2,919,796, Pressl, Jan. 5,
1960; 2,952,498, Powers et. al., Sept. 13, 1960; 3,063,551,
Russell, Nov. 13, 1962; 3,319,780, Russell, May 16, 1967.
Foreign Patent: Italy No. 571,945.
The field of search for the foregoing included the following
subclasses: 206-17, and, 211-69.
The Italian patent appears to show a tool which is spring mounted
to be pushed through a hole by the spring when the hole in the
holding device is properly aligned. The remaining United States
patents allow a drill to be dropped out of a hole by turning over
the device after aligning holes through an indexing means. None of
the foregoing patents, however, are directed to the novel features
of applicant's invention.
In accordance with a separate novelty search performed on behalf of
the applicant directed to an axle extending through a hole in a
base with the base having holes at right angles to the hole,
through which the axle is extended, and these latter holes having
ball bearings urged against the circumferential groove in the axle
by corresponding springs and set screws, the following patents of
interest were found: U.S. Pat. Nos. 521,987, Myers, June 26, 1894;
829,658, Leavitt, Aug. 28, 1906; 1,401,349, Miquet, Dec. 27, 1921;
1,467,378, Hanson, Sept. 11, 1923; 1,895,540, Cohen, Jan. 31, 1933;
1,984,464, Cohen, Dec. 18, 1934; 2,276,734, Meredith, March 17,
1942; 2,325,623, Murtagh et. al., Aug. 3, 1943; 2,656,227, Comery,
Oct. 20, 1953.
Leavitt U.S. Pat. No. 829,658 and Myers U.S. Pat. No. 521,987 both
discloses shafts having grooves therein with ball bearings held in
the grooves to allow rotation of the shaft. Cohen U.S. Pat. Nos.
1,895,540 and 1,984,464 disclose ball bearings held in grooves and
shafts by resilient pieces. Miquet U.S. Pat. No. 1,401,349, Hanson
U.S. Pat. No. 1,467,378, Meredith U.S. Pat. No. 2,276,734 and
Murtagh et al. U.S. Pat. No. 2,325,623 disclose ball bearings in
grooves and the use of springs to press the ball bearings in the
grooves, though not in the novel manner set forth by applicant in
his invention. Comery U.S. Pat. No. 2,656,227 is of general
interest in regard to the use of ball bearings and a spring with a
groove and a shaft. Included in this latter search were the
following subclasses: 308-189, 191,233
SUMMARY OF THE INVENTION
It is an object of this invention to provide a novel drill
dispensing container for a set of different size drill bits, which
container permits the convenient selection of any desired
drill.
Another object of this invention is to provide a novel drill
dispensing ontainer for holding different size drills wherein a
desired drill can be elevated from its usual position for
convenient selection thereof.
Still another object of this invention is to provide a novel holder
for drills which holder is durable and efficient in use and which
can be simply and easily manufactured.
It is a further object of this invention to provide a novel drill
dispensing container utilizing a rotatable drill holder in
combination with a circular base with associated indexing means for
indicating the desired drill.
Yet another object of this invention is to provide a novel drill
dispensing container for holding a plurality of drills in a drill
holder which is rotatable about a base, wherein a desired drill
having a value indicated by indicia on the drill container is
raised slightly to indicate the selected drill.
In accordance with one embodiment of this invention, a drill
dispensing container includes a circular base plate, a circular
drill holder, and a depending shaft affixed to the central axis of
the drill holder for rotary motion within a shaft receiving hole
along the central axis of the base plate. Means are provided for
restricting the axial motion of the shaft with respect to the base
plate. The circular base plate further includes an axially oriented
alignment mark on the circumference thereof. The plate further
includes three spring-loaded ball bearings disposed at fixed
distances from the central axis of the base plate. The base plate
has three axial cylindrical pockets, respectively, for receiving
three springs and the three ball bearings, the plate further having
corresponding lips partly covering the pockets for limiting the
extent of travel of the ball bearings. The three ball bearings and
the alignment mark are co-aligned along an imaginary radial line
from the central axis of the base plate. With a circular base
having a radius r.sub.5 and the three spring-loaded ball bearings
disposed distances r.sub.1, r.sub.2, and r.sub.3, respectively,
from the central axis, the base plate is further formed with the
concentric recess extending between the distances r.sub.0 to
r.sub.4, wherein ..ltoreq.r.sub.0 <r.sub.1 <r.sub.2
<r.sub.3 <r.sub.4 <r.sub.5, so as to form an external
concentric rim from r.sub.4 to r.sub.5, the recess having a
sufficient depth so that the extended ball bearings do not extend
past the plane of the rim. The circular drill holder has a
corresponding radius r.sub.5 and further includes a multiplicity of
through drill receiving apertures axially disposed within the
holder about concentric circles having radii equal to the distances
r.sub.1, r.sub.2, and r.sub.3. The apertures are staggered in such
a manner that the axes of not two apertures are aligned along a
common radius from the axis of the drill holder. The drill holder
is provided with external circumferential indicia identifying means
for indicating the values of drills to be carried in the drill
receiving aperture, each indicium being radially co-aligned with
its corresponding aperture. Indexing means are associated with the
base plate and the holder for positively co-aligning desired
indicia with respect to the alignment mark.
In accordance with certain features of the invention, the indexing
means includes a separate spring loaded ball bearing disposed a
fixed distance r.sub.6 from the central axis on the rim of the base
plate, wherein r.sub.4 <r.sub.6 <r.sub.5, and wherein the
plate has a separate axial cylindrical pocket for receiving a
separate spring and the separate ball bearing. The plate has a
corresponding lip partially covering the separate cylindrical
pocket for limiting the extent of travel of the ball bearing. Also,
a plurality of indentations are located on the surface of the
holder facing the plate, the indentations being located about a
circle on the surface having its center at the center axis of the
holder and having a radius of the distance r.sub.6. The plurality
of indentations is at least equal in number to the total of the
through drill-receiving apertures. In accordance with specific
features of the invention, the three concentric circles of radii
r.sub.1, r.sub.2, and r.sub.3 house four, eight, and 16 apertures,
respectively.
In accordance with specific features of the invention, the drill
dispensing container has restricting means including a
circumferentially disposed groove about the shaft and a
spring-biased ball bearing housed within a radial aperture of the
base plate which engages with the shaft receiving hole. A set screw
within the radial aperture directs the spring biased 8all bearing
against the groove, thereby permitting rotation of the shaft with
respect to the plate while restricting axial motion
therebetween.
The immediately preceding feature is especially suitable in
cooperation with a drill dispensing container. However, it is
advantageous with other mechanisms utilizing shafts. In general, in
accordance with a separate embodiment of the invention, a novel
combination is set forth including a shaft having a
circumferentially disposed groove therein. A base plate, having a
hole therewithin for receiving the shaft, has at least one
perpendicular aperture which engages the shaft receiving hole. A
spring biased ball bearing is housed within each of the apertures.
A set screw within each of the apertures directs the corresponding
spring-biased ball bearing against the groove, thereby permitting
rotation of the shaft with respect to the plate while restricting
axial motion therebetween.
BRIEF DESCRIPTION OF THE DRAWINGS
Other objects, advantages and features of this invention will be
more apparent from the following description when read in
conjunction with the accompanying drawings, wherein:
FIG. 1 is a perspective view of one embodiment of this
invention;
FIG. 2 is a top view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is an exploded side view thereof;
FIG. 5 is a sectional view taken along the line 5--5 of FIG. 4;
FIG. 6 is a view taken along the line 6--6 of FIG. 4;
FIG. 7 is a sectional view taken along the line 7--7 of FIG. 6;
FIG. 8 is a sectional view taken along the line 8--8 of FIG. 7;
FIG. 9 is a sectional view taken along the line 9--9 of FIG. 2;
and
FIG. 10 is a sectional view taken along the line 10--10 of FIG.
6.
DESCRIPTION OF ONE EMBODIMENT OF THE INVENTION
Referring to the drawings, especially FIGS. 1 and 3, there is shown
a drill dispensing container 20. The container 20 includes a lower
circular base plate 21 having a shaft receiving hole 22 (FIGS. 6
and 9) along its central axis therewithin. The container 20 further
includes a circular drill holder 23 having an overall circumference
corresponding to that of the circular base plate 21.
Referring in particular to FIG. 2 and 5, the circular drill holder
23 has a central hole 24 extending partially through the thickness
thereof from the top down towards the bottom, forming a receptacle
for a large drill bit.
Referring again to FIG. 1 but more particularly to FIG. 2, a first
plurality of through drill receiving apertures 25, 26, 27, 28 of
decreasing diameters are axially disposed within the holder 23
about a circle having its center at the central axis thereof with a
radius r.sub.1. A second plurality of through drill receiving
apertures 29-36, inclusive, of decreasing diameters are axially
disposed within the holder 23 about a concentric circle having a
radius r.sub.2. A third plurality of through drill receiving
apertures 37-52, inclusive, of decreasing diameters are axially
disposed within the holder 23 about a concentric circle having a
radius r.sub.3. Each of the centers of the four apertures located
on the circle r.sub.1 are disposed equiangularly with respect to
each other, that is, displaced at 90.degree. intervals. Similarly,
each of the apertures of the second plurality disposed about the
circle r.sub.2 are disposed equiangularly therein so that the
centers thereof are located at angles 45.degree. from an adjacent
aperture. In a similar vein, the third plurality of apertures
disposed about the circle r.sub.3 are equally spaced with their
centers 221/2.degree. from its adjacent aperture. All the apertures
located in the three circles are so staggered in such a manner that
the axes of no two apertures are aligned along a common radius of
the drill holder 23.
In a preferred embodiment, the holes 24-52 are of different
dimensions and are in decreasing order of value and, preferably,
range from sizes of 1/2 inch down to 1/16 inch increments of 1/64
inch. For example, aperture 24 is 1/2 inch, aperture 25 is 31/64
inch, aperture 26 is 15/32 inch, aperture 51 is 5/64 inch, and
aperture 52 is 1/16 inch.
Indicia 53--53 are provided circumferentially about a beveled top
of the holder 23 for indicating the value of a drill in a given
drill receiving aperture 25 to 52, respectively. Each indicium is
radially co-aligned with its corresponding aperture, for example,
the aperture 39 on the outer circle having the radius r.sub.3 is
radially co-aligned with the indicium identified as 17/64.
The drill holder 23 is provided with a depending axial shaft 54.
The shaft 54, centrally located about the axis of the holder 23, is
adapted to fit within the axial shaft receiving hole 22 of the
circular base plate 23. The shaft 54 is provided with a
circumferentially disposed groove 56 about its periphery.
The drill holder 23 is provided with a plurality of indentations
57--57, (FIG. 5 and 9) on the surface of the holder 23 facing the
plate 21. Identations 57--57 are located about a concentric circle
on the surface having a radius r.sub.6, the number of identations
57--57 being at least equal in number to the total number of
apertures 25-52. In the embodiment depicted, 32 indentations are
provided, one indentation for each spaced indicium depicted in FIG.
2. As shown in FIG. 2 indicia include markings designating the
value of the 28 drill receiving apertures 25-52, inclusive, and
further include four nonusable stops identified as USA, LAB, AND,
and MAT disposed at 90.degree. intervals thereof with respect to
each other. Hence, there being 32 equiangularly spaced indentations
and likewise 32 equiangularly spaced markings, each marking or
indentation is spaced from its neighbor by a radial angle
111/4.degree..
Referring now to FIGS. 4 and 6-10, there is shown in greater
detail, the circular base plate 21. The circular base plate 21
includes an axially oriented alignment mark 60 on its
circumference. A spring-loaded ball bearing 61 is disposed a fixed
distance r.sub.1 from the central axis of the base plate 21. The
plate 21 has a first axial cylindrical pocket 62, as shown in FIG.
7, for receiving a first spring and the first ball bearing 61. The
plate 21 further has a first lip 64 partially covering the first
cylindrical pocket 62 for limiting the extent of travel of the ball
bearing 61. In a similar fashion, a second spring-loaded ball
bearing 65 is disposed a fixed distance r.sub.2 from the central
axis. The plate 21 has a second axial cylindrical pocket 66 for
receiving a second spring 67 and the second ball bearing 65. The
plate 21 further has a lip 68 partially covering the cylindrical
pocket 66 for limiting the extent of travel of the ball bearing 65.
A third spring-loaded ball bearing 70 is disposed a fixed distance
r.sub.3 from the central axis. The plate 21 has an axial
cylindrical pocket 71 for receiving a third spring 72 and the third
ball bearing 70. The plate 21 further has a third lip 73 partially
covering the pocket 71, the pocket 71 limiting the extent of travel
of the ball bearing 70. The three ball bearings 61, 65, and 70 and
the alignment mark 60 are co-aligned along an imaginary radial
line.
For clarity of illustration, one of the ball bearings and its
associated spring are intentionally deleted from FIG. 7 so as to
provide a clear view of a configuration of the restraining lip
associated therewith.
The circular base plate 21 is further formed with a concentric
recess 76 between the dimensions r.sub.0 to r.sub.4 so that, with a
plate having an outer radius r.sub.5 and wherein 0.ltoreq.r.sub.0
<r.sub.1 <r.sub.2 <r.sub.3 <r.sub.4 <r.sub.5, an
external rim 78 is concentrically formed having inner and outer
radii r.sub.4 and r.sub.5, respectively. The recess 76 is of
sufficient depth so that the extended ball bearings 61, 65, and 70
do not extend past the plane of the rim, as depicted with greater
clarity at FIG. 7.
Referring now to FIG. 5, the shaft 54 has a shoulder 79 to provide
for mechanical rigidity with the holder 23. The shoulder 79,
however, extends downward a depth less than that of the recess
76.
The holder 23 rotates about a central axis with its shaft 54
disposed within the shaft receiving hole 22 of the circular base
plate 21. The holder and base plate are maintained in such a manner
so that the holder 23 can freely rotate about its axis. Desirably,
however, the axial shaft of the holder 23 is restricted in axial
movement so that the holder and base plate do not become
inadvertantly easily disengaged. Hence, suitable means are provided
fo restricting the axial motion of the shaft 54 with respect to the
base plate 21 while permitting rotation of the shaft 54 within the
base plate 21. Such suitable means can include the unique features
as described hereinafter.
Referring now to FIGS. 8 and 9, the base plate 21 includes a ball
bearing 80 housed within a radial aperture 81 which engages with
the shaft receiving hole 22 of the base plate 21. The ball bearing
80 is urged toward the shaft receiving hole 22 by means of a spring
82 which is urged by a set screw 83 housed within the radial
aperture. Thus, by adjusting the set screw 83 inwardly, the spring
82 urges the ball bearing 80 toward the shaft receiving hole; the
ball bearing 80, engaging within the circumferentially disposed
groove 56 of the shaft 54, permits the shaft 54 to rotate within
the hole 22 of the base plate 21, but, however, restrains the axial
motion of the shaft 54 with respect to the base plate 21, Although
in a preferred embodiment for a drill dispensing container, only
one radial aperture 81 with an associated spring 82, ball bearing
80, and set screw 83 are shown, additional radial apertures can be
used for various axle restraining mechanisms. In situations where
heavier loads are used, it is contemplated that three of four
equally disposed radial apertures be used for restraining the axial
motion of shafts within shaft receiving holes of base plates. With
extremely heavy loads, many more than four radially disposed
apertures and ball bearings can be used so as to provide for longer
life, reduced wear of thqe various parts, and efficient operation
of the mechanism.
The drill dispensing container 20 can be affixed to a table or
other support through the means of suitable bolts which can engage
within holes 90, 91, and 92 (FIGS. 6 and 10). A partial hole 93
provides a pocket for receiving a spring 94 which is urged against
a ball bearing 95. The ball bearing 95 is restrained by a lip 96 in
the rim 78 of the base plate 21.
In operation, as the holder 23 is rotated with respect to the base
plate 21, so that a desired indicium is aligned with the alignment
mark 60, an appropriate one of the ball bearings 61, 65, 70 raises
the selected drill from its usual elevation, slightly, so as to
indicate the selected drill for easy removal from the base plate.
The ball bearing 95 together with the associated indentations 57-57
form an indexing means associated with the base plate and the
holder for positively coaligning the desired indicia with respect
to the alignment mark.
Variuos features of this invention can be used either separately or
togehter. For example, the drill dispensing container can function
with axle restraining means of a type other than that described,
and the axle restraining means described can be used with apparatus
other than drill dispensing containers. Preferably, both are used
in cooperation as described herein because of its simplicity and
because the depth of the shaft can be limited in length to obviate
the requirement for a bushing at its base, which bushing would
otherwise further extend beyond the bottom surface of the
plate.
The external edges of the base plate and the drill holder can be
knurled so as to provide for convenient rotation of the two with
respect to each other. Such knurling is a desirable feature;
however, it is not essential to this invention nor to an
understanding thereof.
Various parts are depicted in the drawing as being constructed of
metal. However, it is understood that other materials can be used,
such as plastic for example, which may be more desirable in terms
of ease of manufacture and of cost.
Other configurations are, of course, well within the skill of the
art. It may be desirable to utilize more than three concentric
circles for housing drill bits in situations such as drill
containers to house drills raning from 1/16 inch up 1 inch, for
example.
* * * * *