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Патент USA US2404604

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July 23, 1946.
‘ 2,404,604
Filed Dec. 29, 1943
5 Sheets-Sheet l
1 a
, I
F?‘ .1‘
July 23; 1946.
Filed Dec. 29, 1943
3 Sheets-Sheet ‘24
Thomas L
July 23, 1.946.
-. 2,404,604
Filed Dec. 29, 1945
a Sheetls-Sheet s
\‘ nventor
Patented July 23, _l946
GRINDING 'roonouipr. ’
‘Thomas L. Taylor, Detroit, Mich.
Application December 29, 1943,‘ Serial No. 516,079
3 Claims.
(01. 51-241)
The present invention relates generally to the
art of grinding the edge of plate steel through
the medium of a pneumatically driven, hand
manipulated grinding tool, and has for its pri
the arms I are provided with clamps 2 for secur
ing said arms in position on a plate which isto
mary object to provide, in a manner as herein
after set forth, a guide for said tool comprising
a novel construction and arrangement whereby
the edge of the work may be expeditiously and
uniformly ground.
be ground‘;
character'which will permit the edge of the work
Still another important object of the invention
is to provide a guide of the character described
which is adapted to be readily adjusted to ac
commodate plate of substantially any size and
Other objects of the invention are to provide
In the embodiment shown, the
clamps 2 comprise vertically spaced, ‘opposed up
' per and lower jaws 3'and 4, respectively, ‘which
are integral with the arms I. The jaws 3 and 4
receive the plate therebetwe'enr "I'he'upper jaws
3 are threaded to accommodate thumb screws 5
which clamp the'arms I on the work in cooper
Another very important object of the inven 10
tion is to provide .a guideof the aforementioned
to be ground at any desired angle. _
ation with the lower jaws 4.
' '
At their other ends, the arms I terminate in
vertical eyes 6. Secured by nuts ‘I in the eyes 6
and depending from said eyes are hangers 8 in
the form of vertical shafts. Set screws 9 releas
ably secure the hangers 8 against rotation in the
eyes; 6.
Substantially rectangular metallic.
sleeves ‘III are fixed. on the lower ends of the
hangers 8. Mounted in‘ the sleeves I0 is ‘a'sub
stantially channel-shaped guide II- of suitable
a grinding tool guide which will be comparatively 20 metal. The’ sleeves‘ ID are adjustable longitu
dinally on the guide II. Set screws I2 secure the
simple in construction, strong, durable, highly
sleeves II] in adjusted position on the guide II.
e?icient and reliable in use, compact and which
It will thus be seen that the guide I I is mounted
may be manufactured at low cost.
on the plate which is ‘to be ground.
All of the foregoing, and still further objects
Referring now to Figures l,_ 2 and 3 of the
and advantages of the invention will become ap 25
drawings, it will be seen that reference character
parent from a study of thefollowing speci?ca
I3 designates generally what may be considered
tion, taken in connection with the accompanying
a carriage which is operable on the work. The
drawings wherein like characters of reference
designate corresponding parts throughout the
several views, and wherein:
Figure 1 is a view in side elevation of the por
tion of the device which carries the pneumatic
grinding tool, certain portions thereof being re
carriage I 3' comprises metallic side plates III
30 which include forwardly projecting, compara
tively short and long upper and lower arms I5 and
I6, respectively, said upper and lower arms being
spaced from each other for the reception of the
marginal portion of the work therebetween. The
side plates III are secured at their rear end por
Figure 2 is a view in front elevation thereof,
tions, as at I l, on the side members of a sub
certain parts being omitted.
stantially U-shaped frame I8. The usual guard
Figure 3 is a top plan view.
I9 of a conventional grinding tool 20 is secured
Figure 4 is a view in front elevation of ‘the
at 2I for pivotal adjustment between the plates,
usual guard of a grinding tool.
Figure 5 is a detail view in cross section, taken 40 I4.
Fixed between the forward end portions of the
substantially on the'line 5—5 of Figure 1.
I5 is a pair of spaced, parallel, transverse
Figure 6 is a view in side elevation thereof.
bars 22. Rollers 23 are journaled between the
Figure 7 is a view in horizontal section, taken
bars 22 for engagement with the upper surface ~
substantially on the line 1—1 of Figure 2.
Figure 8 is a detail view in vertical section, 45 8f the work.
Mounted beneath the forward end portions of
taken substantially on the line 8-8 of Figure 1.
the arms I6 is a metallic bar 24. A substantially
Figure 9 is a perspective view of one of the
U-shaped bar 25 is pivotally secured. at 26 be
tween the arms I6 for vertical swinging move
Figure 10 is a detail view in vertical section,
taken substantially on the line III-I0 of Fig 60 ment. Extending between the legs of the sub
stantially VU-shaped bar 25 is a bar 21. Rollers
ure 6.
.28 are journaled between the bars 25 and 21.
Referring now to the drawings in detail, and
The rollers 28 are engageable beneath the work.
to Figures 6, 7 and 10 thereof in particular, it
Adjusting screws 29 are threadedly mounted in
will be seen that reference character I designates
a pair of angular metallic arms. On one end, 65 the bar 24 and engaged beneath the member 25 .
' 2,404,604
for raising and lowering the rollers 28 to accom
the tool 20 vertically on pivot bolts 2|, a rounded
edge may be ground. When a circular plate is to
be ground, the carriage I3 is mounted for opera
tion thereon and the guide I I, the arms I, et cet
era, are dispensed with. A straight edge may also
be ground in this manner, if desired.
‘ modate plates of different thicknesses.
An arcuate, longitudinally adjustable brace or
‘ strut 30 is provided for vertically adjusting the
tool 20 in the carriage I3 for grinding at different ‘
angles. The adjustable brace 30 comprises slid
ably adjustable sections 3! and 32 which are se- '
‘ ‘It is believed that the many advantages of a
cured together by ascrew 34, The element 32 I
is ?xed to the front bar 22. The element 3| is
grinding tool guide constructed in accordance
with the present invention will be readily under-'\
‘ secured at 33 on 'tdpyor the grinderguard‘ 19., :The
10 stood, ‘and'although a preferred ‘embodiment of
, screw 34 is“ threadedly mounted in the element ‘
the device is as illustrated and described, it is to
A slot in the element 32 accommodates the
be understood that changes in the details of con
struction and in the combination and arrange
Fixedbeneath the U frame I 8 and extendingh ;ment of parts may be resorted to which will fall
downwardly and rearwardly therefrom isan an;
within ‘the scope of the invention as claimed.
What is claimed is:
35. Aprojecting
yoke 36 is portion-oftheshank
adjustablyimounte'd ,
1. Means forugrinding the edge of plate steel
35. The yoke 36 comprises, at'an intermediatei' v"comprising, a carriage operable on a plate to be
point, an eye 3‘! which accommodates the shank a
ground; said carriage including a pair of side
35. Aset screw 38 in the eye v3'! secures the yoke 20 plates, a grinding tool pivotally mounted for
35in adjusted position,v Asillustrated to advan_ ‘ swinging adjustment between said plates, the
tage in ‘Figure 10 of the drawings,- the legs of the
plates including spaced arms for the reception
yoke 37,6v terminate in reduced spindlesJ39 having
of the Work therebetween, and rollers journaled
journaled-thereon. wheels or rollers 40. The
on the arms and operable on the work.
wheels 48 are operable, in the guide H.
25 2.,Meansior grinding the‘ edge of platesteel
It is thought that, the manner in which the in
comprising, a carriage operable on a piece of
vention functions willrbe readily ,apparentfrom
work, said carriage including, aU frame, side
a consideration of the foregoing, Brie?y; to grind
plates mounted on said U, frameha grinding tool
a, straight edge, the'guide II ‘is mounted on the
pivotally mounted between said side plates, the
work through the medium of. the hangers 8, the
side plates including spaced arms for the recep
arms ,I, etcetera. The carriage I3 is then mount
" tion of the work therebetween, pairs of bars’ ex
, screw 34.
‘ ed on the plate which is received between the
tending between the arms, rollers journaledqbe
‘ upper and lower arms l5 and I6. With the wheels
40 on the yoke-36 traveling in the guide II, the
carriage I3 is manually fed on the platetwith the
‘ head ‘4| of the tool an engaged with the edgeto
be ground.v The U frame l8 .may be adjusted
forwardly or rearwardly relativeto the yoke 36
I at. 31: for positioning the grinding tool properly
relative-t0 the work. If a beveled edge is to be
ground, the screw 34» is loosened to permit the
‘tool 29 to be swung upwardly 0r downwardly to
the desired position on the carriage l3. As here
,inbefore stated, the adjusting screws 29, permit
the rollers 28 to be raised or lowered for mount
ing the carriage l3 properly on plates of different
The wheels‘ 40- are movable verti
tween said bars and operable'on the work, means
for adjusting certain of the rollers toward orlaway
from the work, and means for adjusting , the
‘ grinding tool. about said pivotal mounting.
3. Meansfor grinding theedge of plate steel
comprising, a pair of arms, means for detachably
securing said arms on a piece of work, hangers
depending from the arms, at substantially chan
nel-shaped guide mounted on said hangers, a
carriage operable on the work, said carriage in
cluding a U frame, side plates mounted on the U
frame, rollers on the side plates operable on the
, opposite faces of the work, means for securing
‘ a grinding tool on the carriage for engagement
with the work, a yoke mounted on the carriage,
cally in the guide II to permit operation of the
and wheels journaled on the yoke and operable
‘carriage I3 on warped or otherwise irregular
in the guide.
plates. By loosening the screw 34 and swinging 50
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