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Патент USA US2100808

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Nov. 30, 1937.
A. .1. KIRKLAND
2,100,808
GRINDER AND SHARPENER ATTACHMENT FOR MEAT GRINDERS
Filed Dec. 14', 1936
INVENTOR.‘
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TTORNEY.
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Patented Nov. 30, 1937
UNETED STATES PATENT GEE‘!
2,100,808
GRINDER AND SHARPENER ATTACHMENT '
FOR MEAT GRINDERS
Andrew I. Kirkland, West Palm Beach, Fla.
Application December 14, 1936, Serial No. 115,826
4 Claims. (01. 51-—241)
My invention relates to knife grinding and a tongue l6 of a grinder shaft H. The boss M
sharpening means, and more particularly to a
as now constructed, has an annular recess l8,
device which may be readily attached to the
motor of a meat grinder, and it consists in the
5 constructions, arrangements and combinations
herein described and claimed.
concentric with the shaft l2 and receives there
in a bushing N3 of the shaft IT, as will now be
It is an object of the invention to provide an
attachment embodying a shaft having mounted
thereon the necessary grinding and sharpening
disks, as well as buffer disk, the shaft being con
structed for quick and rigid attachment to the
drive shaft of the motor.
It is also an object of the invention to provide
an adjustable pedestal support for the shaft of
15
the attachment, permitting its ready adjustment
to various constructions of meat choppers or
grinders.
It is a further object of the invention to pro
vide a separable shaft, each section including
20 one or more grinding or buffing elements, there
fully described.
The shaft ii and shaft ll’ constitute the
mounting means for the grinding disks, buffers,
etc., the shafts being arranged in ‘end to end rela
tion, one end of the shaft ll’ being journalled in
the boss H3 while the opposite end of the shaft
I?’ is journalled in an adjustable pedestal 26.
The shaft I‘! has a pair of spaced washers 2i
and .22, ?xed thereto and interposed between
these washers there is a sleeve bearing 23, the
latter being journalled in the bushing it. The 16
bushing 19 snugly fits within the recess l8 and
is locked therein by a set screw 2%. Qbviously,
the mounting of the shaft ll so as to mate the
slot I 5 and tongue l5, rotation of the motor shaft
l2 will cause rotation of the shaft ii and its 20
by making it possible to employ a single grind
associated grinding disk 25.
ing element, if desired, or the entire number of
elements may be rotated as a unit.
It is a still further object of the invention
the shaft I‘! terminates in a tongue 26 adapted to
inter?t with a slot 2'! formed in the end of the
The outer end of
tachable to one end of the grinder shaft and
shaft H’, and preferably a sleeve 28 is disposed
around the juncture of the shafts to maintain
alignment and engagement of the slot and
permitting swinging movement of the shaft to '
tongue.
a position clear of the driving motor.
The outer end of the shaft H’ is revolubly
mounted in a bushing 29 journalled in a collar
25 to provide a pedestal support having means at
Additional objects, advantages and features of
30 invention will be apparent from the following
description considered in conjunction with the
accompanying drawing, wherein
Figure l is a side elevation of my invention as
installed upon a meat chopper or grinder.
Figure 2 is a similar view showing a single
35
emery wheel associated with the driving motor,
and also showing the position of the other emery
wheel and buffer when not in use.
Figure 3 is a fragmentary perspective view
40 illustrating the iii-operativev positions of one of
the emery wheels and buffer.
Figure 4 is a fragmentary sectional View of
the pedestal and bearing for the shaft.
Figure 5 is an enlarged sectional View illustrat
ing the bearing and shaft connection at the driv
ing motor.
There is illustrated a base to which may be of
any approved construction, at one end of which
there is suitably mounted an electric motor H,
employed ordinarily for driving a meatchopper
or grinder (not shown). The motor I! includes
a driven shaft i2 suitably journalled as at IS in
a boss M of the motor casing. The shaft l2
stops short of the outer end of the boss and in
55 cludes a transversely extended slot !5, receiving
10:
30, the latter being ?xed to a yoke 3! of the 30
pedestal 20. The yoke 3! includes a pair of up
standing arms 32, each of which has a threaded
aperture
screws 33.
and receiving respective adjusting
The screws 33 engage in suitable
countersunk bearings formed in the periphery of 35
the collar, and as may be clearly seen in Figure
4, are in opposed relation. Thus, the shaft I?’
may be laterally adjusted by manipulation of
the screws and locked in such position upon
tightening of the lock nuts 34. This adjustment 40
may be necessary in adapting the grinder at
tachment to certain makes of meat choppers,
and in addition, the yoke 3| may be vertically
adjustable, and this by reason of the fact that
the stem 35 thereof may be moved upwardly and 45
downwardly through the socket 36 of the pedes
tal.
The stem 35 may be locked in adjusted po
sitions by means of the screw 31, threadedly en
gaged in a boss 38 and impinging the stem.
The shaft H’ has secured thereon a buffer 39 50
and grinding disk 40 suitably spaced along the
length of the shaft.
The use of the attachment will be readily
understood from the following description. The
meat chopper ordinarily associated with the mo 55
2
2,100,808
tor II will be removed, exposing the recess l8
and shaft I2, and the collar and sleeve bearing
l9—23 of the shaft H inserted therein, the tongue
l6 entering the slot IS. The set screw 24 is now
tightened, locking the bushing l9 within the re
cess. Thus with operation of the motor, the shaft
i? will be driven, rotating the grinding disk 25.
This position may be readily seen from consider
ation of Figure 2, and it will also be seen that the
shaft 11’ and associated buffer and grinding disk
has been swung upon the adjusting pins 33 so
as to clear the disk 25, the shaft ll’ resting upon
an upright support 4| carried upon one of the
base I9. The grinding disk 25 may thus be used
15 for sharpening knives and tools of various kinds,
and should a buffer or further grinding be re
quired the motor will be stopped and the shaft
i'l’ then swung'upon the adjusting pins 33 so
that the shafts I‘! and I1’ are in alignment al
20
lowing interlocking engagement between the
tongue 26 and slot 2'1. Should it become neces
sary to center the shaft H’ with the shaft H,
this may be accomplished by manipulation of
the adjusting screws 33 to- effect a lateral move
25 ment of the shaft in one direction or the other,
and if a vertical adjustment is required, this may
be effected by loosening the lock screw 3‘! to
release the stem 35. The yoke 31 may then be
raised or lowered, as desired, and secured by
30 tightening the lock screw 31.
From the foregoing it will be apparent that I
have provided a grinding attachment which may
be quickly installed in place of a meat chopper,
and by providing separable shafting, a single
35 grinding disk may be employed, or several disks
bearing complemental to the boss and removably
?xed therein, a bearing in the ?rst named bearing
and revolubly supporting the grinder shaft, a
tongue on the grinder shaft engaged within the
transverse slot of the motor shaft, a grinder disk
on the grinding shaft, said last named shaft hav
ing a transverse tongue at the end thereof, a buff
er and grinder shaft arranged in end to end re
lation with the grinder shaft and having a slot
receiving the tongue, buffer and grinder disks 1O
on the buffer and a grinder shaft, and adjustable
support means for the outer end of the last named
shaft.
2. The structure of claim 1 wherein the support
means is vertically and laterally adjustable.
15
3. A grinder attachment for meat choppers and
the like comprising in combination, a motor hav
ing a shaft and an open ended boss circumscrib
ing the shaft,'said shaft having a transverse slot
across the end thereof, a grinder shaft having a
bearing complemental to the boss and removably
?xed therein, a bearing in the ?rst named bear
ing and revolubly supporting the grinder shaft, a
tongue on the grinder shaft engaged within the
transverse slot of the motor shaft, a grinder disk 25
on the grinding shaft, said last named shaft hav
ing a transverse tongue at the end thereof, a
buffer and grinder shaft arranged in end to end
relation with the grinder shaft and having a slot
receiving the tongue, buffer and grinder disks on 30
the bu?er and grinder shaft, a bearing collar on
the grinder and buffer shaft, a yoke member hav
ing laterally adjustable pivot pins journalled in
opposed sides of the collar and said yoke member 35
and buffers may be utilized, permitting several
having a vertically adjustable stem member.
grinding or polishing operations, as may be re
quired in some instances.
While I have shown and described a certain pre
4. A grinder attachment for meat grinders and
the like comprising in combination, a motor hav
ing a shaft, a second shaft, detachable coupling
40 ferred construction, this is by way of illustration
only, for I am aware that changes may be made,
and I therefore consider as my own, all such modi
?cations in structure as fairly fall within the
scope of the appended claims.
I claim:
45
1. A grinder attachment for meat choppers and
the like comprising in combination, a motor hav
means between the shafts for end to end connec
tion, a grinding disk on the motor shaft, 2. buffer
and grinding disk on the second named shaft, an
adjustable support means for the second named
shaft, said last named shaft having pivotal con
nection with the support means whereby said
ing a shaft and an open ended boss circumscrib
shaft may be swung to a position clear of the
‘motor shaft upon uncoupling of the shafts and
a support for the second named shaft when in the
ing the shaft, said shaft having a transverse slot
latter position.
50 across the end thereof, a grinder shaft having a
ANDREW J. KIRKLAND.
.
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