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Патент USA US2412066

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.Dec. 3, 1946.‘
Fiied' Oct. 31,- 1944'
2 Sheets-Shee’é 1
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"18. SHEAR
Dec. 3,1946.
Filed Oct. 51, v1944
2 SheetSD-Sheet 2
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FIG. 4
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' m3. SHEAR
Patented Dec. 3, 1946
' Walter B. Shear, Newark, N. J1:l alsignor to West
ern Electric Company,
York, N. ‘2., a corporation of New York
Application October 31, 1944. Serial No. 561,198
4 Claims. (Cl. 1MB)
This invention relates to shearing apparatus,
and more particularly to apparatus for shearing
I ‘I. The downward movement of the ram is con
Y trolled by a variable stop it, these stops II and ll
In manufacturing concerns, machine and tool
drawings are usually made upon sheets of stand
ard sizes. Furthermore, the blueprints or other
reproductions of the drawings may be made so
that a multiplicity of prints of drawings, all of
With this and other objects in view, the inven
tion comprises a shearing apparatus having
stance, the head It is
and is provided
with a plurality of threaded apertures 21 (Fig. 3),
for receiving mounting screws 28. Shearing ele
being mounted in the bracket II. The lever II is
supported. pivotally, at II in lugs 22 which are
?xed to the bracket II. The purpose of the link
20 is to allow the necessary longitudinal move
ment of the lever II for imparting a truly vertical
the same size, may appear in one sheet of mate
movement to the ram I‘ through the pivotal con
- rial, for example, blueprint paper.
nection 23. A handle I‘ may be gripped by the
An object of the invention is to provide a shear
operator to actuate the lever II.
ing apparatus which is simple in structure and
The lower end of the ram It is flared outwardly
highly efilcient in operation to simultaneously
as at 2| to provide a support for a head It. The
shear a complete print from a material contain
head It is of the contour of the print or portion
ing a plurality of prints.
15 to be cut from the material. In the present in
shearing elements surrounding an area of a given -
contour, a companion member having slots to
ments III are provided for the four sides of the
receive the shearing elements and means to cause 20 head It and are secured thereto through the aid
relative movement of the shearing elements and
of the screws 28 and holding strips II. The hold
the companion member to shear a portion from
ing strips 3| extend downwardly a given distance
a material.
Other objects and advantages will be appa- .
from the head to support the shearing elements
It and add rigidity thereto.
rent from the following detailed description when 25 A stripping element 38, which is substantially of
considered in conjunction with the accompany
the same contour as the head is positioned in the
ing drawings, wherein
area surrounded by the shearing elements III and
is freely movable therein under the control of
plungers 34 and their controlling springs 35.
Fig. 1 is a side elevational view of the apparatus,
portions thereof being broken away;
Fig. 2 is a top plan view of the apparatus;
30 There are four of the spring press plungers, one
Fig. 3 is an enlarged fragmentary sectional
adjacent each corner of the head It and sup
view of a portion of the apparatus;
ported by their housings 31, the latter being ?xed
Fig. 4 is a fragmentary sectional view taken
_ in apertures of the head as shown in Fig. 1. The
along the line 4-4 of Fig. 3; t
Fig. 5 is an enlarged fragmentary detailed view 35
Fig. 6 is an enlarged fragmentary sectional
view taken along the line 6-—6 of Fig. 1;
taken along the line 5-5 of Fig. 1;
Fig. 7 illustrates a portion of a set of reproduc
tion paper with the outlines of three prints there
Fig. 8 is a fragmentary detailed view of the ma
terial after a portion has been sheared therefrom;
Fig. 9 illvstrates a print of a di?erent contour
which could be sheared through a modi?cation
oi the shearing apparatus.
Referring now to the drawings, attention is ?rst
lower ends of the plungers 34 are ?xed to the
stripper plate 33 as indicated at 38, while the
upper ends of the plungers are provided with
heads I! to limit the normal position of the strip
per plate causing its lower surface to lie in a
plane with the lower edges of the shearing ele
40 ments 30 or slightly therebeneath, if so desired.
The shearing elements 30 are formed with teeth
40 at their lower portions, these teeth providing
inner and outer shearing edges II and 42 respec
tively to cooperate with companion members 43
and 44, particularly the upper shearing edges 45
and 46 thereof (Fig. 5) to shear portions from
material. The material in the present‘ illustra
tion is what might be termed blueprint material
directed to Figs. 1 and 2 which illustrate a sup
41 upon which prints 48, 49 and III are made in
porting base it with an integral bracket portion 50 the conventional manner. The portions referred
Ii formed at its free end with a bearing II for
to as being cut from the material due to the
a reciprocable ram or rod H. The movement of
shearing edges II and“ of the elements." are
the ram it is under the control or a lever I I and
illustrated at 52 (Figs. 4 and 8). It is important
a spring it. the latter normally urging the ram
that this material 52, that is, the sheared por
upwardly a distance limited by a variable stop 55 tions of the main material 41, be caused to remain
“ "
upon the scrap portion of the main material and
not upon the print sheared therefrom. This is
accomplished by machined or interrupted por
tions 54 removing or cutting away the outer shear
ing edges 42 near the vertices thereof leaving
only the complete shearing edges 4| to cooper~
shearing elements II. This sheared print may
be removed and the material again adjusted for
the shearing oi’ the print 49.
It should be understood that, although in the
present embodiment the print severed is o! a rec~
tanguiar contour, this contour may be varied to
ate with the inner shearing edges 4' of the mem
coniorm to various prints or other structures to
bers 43 to complete the shearing or the portionsv
be severed from material, one illustration - of
52 causing them to remain on the scrap material.
which is given in Fig. 9. In this illustration, the
There are also cutting edges II at the lower ends 10 print 10, which is to be sheared from the ma
of the teeth to cut the material to form the sepae
terial ‘H, is rectangular in general, excepting at
rate portions 52.
The members 43 and 44 are secured to a table
60, through the aid of machine screws ‘I, and are
spaced from each other a given distance, which is
one corner which is cut away as indicated at 12.
In this instance, instead or having four shear
ing elements and companion cutting members to
is surround a truly rectangular ?gure, six shearing
approximately the thickness of the shearing ele
‘elements and equal sets or shearing members
ments 30, through the aid of spacers 62 mounted
would be required to completely surround the
adjacent the screws iii. The table 60 is mounted
print ‘I0 and shear it from the material ll.
upon a support 64, which in turn is mounted upon
Although speci?c improvements of the inven
the base “I. The support 84 has integral lugs 65 20 tion have been shown and described, it will be
apertured to receive guide rods 66, the latter ' understood that they are but illustrative and that
being disposed at parallel spaced positions as
various modi?cations may be made therein with
illustrated in Fig. 2. The guide rods 66 function
out departing from the scope and spirit of this
in cooperation with integral arms 61 to assure
invention as de?ned by the appended claims.
registration of the shearing elements 30 with the 25 What is claimed is:
openings between the members 43 and 44. ‘The
1. A shearing apparatus comprising compan
integral arms 61 are ?xed to the head 28 through
ion shearing members having shearing edges,
the aid of screws 68 and have bushings 69 in
and a shearing element,‘ having one shearing
their outer ends to ride upon the rods 66 during
edge to cooperate with the shearing edge of its
the reciprocal movement of the head and its asso 30 respective member to cut through a material
ciated structure.
the full lengths thereof, and another shearing
Upon considering the operation of the ap
edge with an interrupted portion to coperate
paratus, let it be assumed that a strip of the
with the shearing v‘edge of the other member to
material 41 containing the prints 48, 49, 50 and
cut through the material for only portions of
others, is to be fed to the apparatus manually. 35 their lengths. ,
As illustrated in Figs. 1 and 2, the material 41 is
2. A shearing apparatus comprising companion
allowed to rest upon the table 60 and is located
shearing members having spaced shearing edges,
so that the area including the print 48 is ac
and a shearing element having a serrated surface
curately positioned beneath the shearing elements
forming shearing edges to pair with the shear
30. The operator may then move the lever 24 40 ing edges of their respective members, to shear
downwardly against the force of the spring l6
through a material, one of the shearing edges
causing the ram I4 to move in its bearing II.
of the element having portions removed there
The material is ?rst gripped by the stripping
from, whereby only spaced portions of the ma
plate 33 and the table 60, assuring against dis
terial will be sheared thereby.
placement of the material during the shearing 45 3. A shearing apparatus comprising companion
operation. The moment the material is gripped,
shearing members having spaced shearing edges,
the shearing elements, during the continued
and a shearing element having a serrated sur
downward movement of the lever, will begin the
face forming lateral cutting edges at the outer
simultaneous shearing of the portion 48 from
most portions thereof, a shearing edge cooperat
the material 41. The shearing action takes place 50 ing with the shearing edge 01' its respective mem
at the multiplicity oi’ teeth of the elements which
ber to shear through a material and a series of
completely surround the area to be sheared. Fur
shearing edges terminating short of vertices of
thermore, a multiplicity of small portions 52 will
the serrated surface to cooperate with the shear
be sheared almost, but not completely from the ' ing edge 01' the other member to shear through
material 41, their severance from the print 48 55 spaced portions or the material.
being complete by the continuation of the shear
4. A shearing apparatus comprising companion
ing edges 4| cooperating with the shearing edges
shearing members having spaced shearing edges,
and a shearing element having a serrated sur
During the downward movement or the shear
face, forming longitudinal shearing edges coop
ing elements, they are accurately aligned with 60 erating with their respective edges of the mem
the ‘spaces to receive them through the aid of
bers to shear a portion from a material, and form
the bushings 69 of the arm 61 riding upon the
ing lateral cutting edges to cut the said portion
rods 66.
into a plurality of parts, one of the shearing
After the ?rst out has been made, the oper
edges 01' the element having interrupted portions
ator may allow the lever I5 to be moved through 65 to leave the Darts integral with one portion of
the action of the spring ii to return the head 26
the material.
to its normal position, the stripper plate 33 func
tioning to strip the sheared print 48 from the
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