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Патент USA US2110637

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March 8, 1938.,
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COMBINATION MACHINE FOR SHARPENING TOOLS
Filed J1ily 11, 1955
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2
‘J, T. SIMMQNS ET AL’
5 Sheets-Sheet l
March 8, 1938.
,
J. T. SIMMONS ET AL
2,310,637
COMBINATION MACHINE FOR SHARPENING TOOLS
Filed July 11, 1935
3 Sheets-Sheet 2
March 8, 1938.
I
I
‘
2,1W,637
J. T. SIMMONS ET AL
‘COMBINATION MACHINE FOR SHARP'ENING TOOLS
Filed July 11, 1935
5 Sheets-Sheet 5
Patented Mar. 8, 1938
2,110,637
UNITED STATES
PATENT OFFICE
2,110,637
COMBINATION MACHINE FOR SHARPENING
TOOLS
Jesse T. Simmons and Richard 0. Gilliam,
Henderson, Tenn.
ApplicationJuly 11, 1935, Serial No. 30,912
4 Claims. (Cl. 51--26)
Our invention relates to an improvement in
combination machine for sharpening tools.
One of the objects is to provide a machine in
which the blades of a lawnmower may be sharp
5 ened without removing the blades from or dis
mantling the lawnmower.
Another object is to provide means for easily
adjusting the machine for sharpening other
tools, such as drills, augers, and the like and for
10 sawing and lathe work.
With these main objects in view, the invention
consists in a number of removable and adjustable
15
20
25
30
35
40
p45
50
55
means for sharpening various sharp-edged tools,
such as knives, shears, clippers, and the like, by
gluing some abrasive material, such as emery pa
per or the like, to its outer surface, and holding
the article to be sharpened against it as it ro 5
tates.
The shaft is driven by a motor M, as illustrated
in Fig. 1, through a belt I0 preferably of the V
type. In order to attain different speeds, two
pulleys II—I2 of different diameters are keyed
to the drive shaft 1, and similar pulleys I3 and
Ma. are secured to the armature shaft of the
attachments for adapting the invention quickly motor M, as shown in Fig. 1.
A standard I4 is ?tted for slidable and adjust
for these various purposes.
In the accompanying drawings:
able connection with and between the channel 15
Fig. 1 is a View in perspective showing a lawn; irons 3 of the frame, where it is held in adjusted
mower in position of having its blades sharpened; position by the screw I5 which has the handle I6
to facilitate turning and tightening the same.
Figs. 2 and 3 are enlarged details partly in sec.
The screw I5 extends through a block II, which
tion;
'
Fig. 4 is a view in front elevation showing the latter is ?tted to slide between the channel-irons 20
lawnmower dotted in position;
3, and screws into a threaded hole in the standard
I 4, as best shown in Figs. 5 and 6, in that way
Fig. 5 is a transverse vertical section on the
line 5--5 of Fig. 4 looking in the direction of the holding the standard rigidly in any adjusted posi
tion.
arrow;
One of the special functions of our present in
Fig. 6 is a transverse vertical section on the
line 6-6 in Fig. 4 looking in the direction of the vention is to provide means for sharpening the
rotary cutter-blades of a lawnmower without the
arrow;
Fig. 7 is a section on line 'I-—'I of Fig. 8 looking necessity of dismantling or taking the lawnmower
apart, except the main wheels which are removed.
in the direction of the arrows;
The lawnmower is placed in the position illus
Fig. 8 is a view in elevation showing the ma
chine used as a lathe with parts broken‘ away trated in Figs. 1, 4 and 5, with the cutter-shaft
I8 which carries the cutter-blades 20, in align
and some in section;
Fig. 9 is a sectional detail of the same slightly ment with the drive-shaft ‘I as shown in Fig. 3,
enlarged with a portion of the work brokenaway; and the protruding ends of the cutter-blade shaft
I8 extend into sockets ZI on the end of drive‘
Fig. 10 is a view in perspective of the removable
shaft 1, and 22 on the end of the stub-shaft 23.
chuck-head; and
Fig. 11 is a sectional view showing a drill or A pin 24 extending transversely through a hole in
the shaft I8 is held in notches 25 in the socket
auger-bit applied in place of the lathe work.
A represents the frame of the machine, the legs H, which constitutes a coupling between shafts
‘I and I8, so that when the parts are thus as 40
I of which are mounted upon and secured to a
sembled, they turn together.
I
suitable base 2.
The stub shaft 23 has a threaded portion 26
The frame A may be variously constructed but
in the form shown consists of two channel-irons which turns in the threaded hole 21 in the stand
3 suitably spaced apart, as shown in Fig. 13, and ard III, and as a means for turning this. stub
shaft 23 in the threaded hole 21 it is provided 45
bolted at their ends to the legs I.
A yoke 4 is slidably and adjustably connected with a handwheel 28, by turning which the socket
with the channel-irons of the frame by means 22 which holds and centers one end of the shaft
I8 of the lawnmower, is turned to adjust and
of a bolt 5 which passes down through the base
of the yoke and between the channel-irons 3 regulate the position of the socket 22. When
where it is held securely in place by the nut 6 thus adjusted, the L-shaped lock bolt 29 is
screwed on the lower end of the bolt 5.
screwed in place against the stub-shaft 23 to hold
A main drive shaft 1 is. journaled in ball-bear
it from turning.
ings 8, in the upper ends of the yoke 4,
The shaft I8 extends through stationary side
A disk 9 is removably secured on the outer end plates 30 constituting a part of the frame of the
of the drive-shaft ‘I, and. this is employed as a lawnmower as viewed in Fig. 3.
55
2
2,110,637
A work rest 3| hinged to an arm 32 secured to
the frame of the machine constitutes a support
for the handle 33 of the lawnmower, as illus
trated in Fig. 5. The arm 32 is clamped to the
channel-irons 3 of the frame A by the screw 34
passing through a block between the bars similar
to the block H, as illustrated in Fig. 4.
The arm 32 may be adjusted along the frame
A by unscrewing and tightening the screw 34.
10 The rest 3| by being swung in the arc of a circle
from its hinged point 35 provides means for vary
ing the inclination of the handle 33 of the lawn
mower, and consequently the position of the en
tire lawnmower and the cutter blades.
To sharpen the blades, some abrasive material
is placed on the edge of the stationary blade 36
and the motor M, is started, and by the well
known grinding contact of the cutter-blades 20
with the abrasive material on the edge of the
stationary blade 36 all the blades are sharpened
evenly throughout their length. In this way all
blades are sharpened at the same time.
With slight change in re-adjustment, our im~
proved machine is just as applicable to other
25 Work, for example the turning of round forms,
that is to say lathe work, such as is illustrated
in Figs. 7 to 10, inclusive. As shown in Figs. 8
and 9, the object to be turned is indicated by
the letter W, which, for purposes of illustration,
happens to be a table leg. This is held in posi
tion by simply inserting the chuck 40 (see Figs.
8 and 9) in the socket 2 I, where it is held against
relative turning by the pin 24 which is passed
through a hole in the shank of the chuck (as
35 shown in Figs. 9 and 11) with the outer ends
resting in the notch 25, thus securing the chuck
to the shaft 1 so they will turn together. The
chuck has teeth 4| which engage the work W
and cause the work to turn with the chuck and
the shaft 1.
A centering pin 42 is inserted in the socket
22 of the stub shaft 23 and extends into the
center of the work W as shown in Figs. 8 and 9,
and by turning the hand-wheel 28 the threads
45 26 of the stub-shaft move the latter endwise the
required distance to hold the work securely be
tween the inner end of the pin 42 and the chuck
40. The L-shaped lock pin 29 holds the stub
shaft 23 against turning.
The tool employed for fashioning the work is
50
held upon the rest 3| in the usual manner of
doing turning.
By referring to Fig. 11, it will be seen how
the machine may be turned for drilling or boring
55 through metal or wood as represented by the
numeral 45 in Fig. 11, the drill 46 being held
in the chuck 40 by a set-screw 41.
Thus we have provided a machine of few, sim
ple and sturdy parts, light enough to be prac
tically portable and adapted with slight adjust
ment for sharpening knives of a lawnmower and
various other sharp-edged tools, also as a saw,
a lathe, and a drill, thus having a variety of
uses with very slight adjustment by any operator
65 with ordinary skill.
We claim:
1. The combination of a frame
allel channel-irons and legs upon
ter are supported, a yoke, and a
ported on the channel-irons and
including par
which the lat
standard sup
each having a
portion extending between the latter, blocks lo
cated beneath the channel-irons with portions
of the blocks extending between the latter, bolts
extending through the blocks and into the yoke
and standard for adjustably clamping the lat
ter and said yoke and standard to the channel 10
irons, a drive-shaft journaled in the upper end
of the yoke, and a stub-shaft screwed into a hole
of the upper end of the standard, the drive-shaft
and stubshaft constructed at their inner ends
to receive the ends of the cutter-shaft of a lawn 15
mower, whereby to impart rotary motion to the
latter while the cutter-blades are being sharp
ened.
2. The combination of a frame
allel channel-irons and. legs upon
ter are supported, a yoke, and a
ported on the channel-irons and
including par
which the lat 20
standard sup
each having a
portion extending between the latter, blocks lo
cated beneath the channel-irons with portions
of the blocks extending between the latter, bolts 25
extending through the blocks and into the yoke
and standard for adjustably clamping the lat
ter and said yoke and standard to the channel
irons, a drive-shaft journaled in the upper end
of the yoke, and a stub-shaft screwed into a 30
hole of the upper end of the standard, the drive
shaft and stub-shaft constructed at their inner
ends to receive the ends of the cutter-shaft of
a lawnmower, whereby to impart rotary motion
to the latter while the cutter-blades are being 35
sharpened, and means for turning the drive
shaft at different speeds according to the re
quirements.
3. The combination of a frame including par
allel channel-irons and legs upon which the lat 40
ter are supported, standards supported on the
channel-irons and each having a portion ex
tending between the latter, blocks located be
neath the channel-irons with portions of the
blocks extending between, the latter, bolts ex 45
tending through the blocks and into the stand
ards for adjustably clamping said blocks and
standards " to the channel-irons, a drive shaft
journaled in the upper end of one standard, a
stub shaft carried by the upper end of the other
standard, said drive shaft and stub shaft being
constructed at their inner ends to receive and
support work therebetween.
4. The combination of a frame having parallel
spaced angle bars and having means for sup 55
porting a lawnmower thereon for sharpening the
blades thereof, a bracket extending transversely
of said angle bars, a block located beneath the
angle bars, a bolt extending through said block
and connected with the bracket for securing the 60
same to the angle bars, and a work rest piv
otally supported by said bracket at the outer end
thereof and extending upwardly in position to
engage and support the lawnmower handle.
7
JESSE T. SIMMONS.
RICHARD O. GILLIAM.
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