вход по аккаунту


Патент USA US2131744

код для вставки
Oct. 4, 1938.
Filed Aug. 5, 1937
Patented Oct. 4, 1938
Mieth MaeseriBeverly, Mass., assignor to United ‘
Shoe Machinery Corporation, Paterson, N. J ., a
corporation of New Jersey
7 Application August 5,
9 Claims.
This invention relates to presses and more par
ticularly to presser members of the type utilized
in clicking machines for applying pressure upon
dies to force the latter through sheet material
5 in cutting articles from such sheet material. The
1937,“:seria1' No. 157,586
(01. 164—19)
bers in the truss formation. Preferably, and as
shown, the superstructure is composed of tubu
lar steel members suitable for the purpose ber
cause of their relatively high strength in tension
and compression, and their great rigidity as a
novel presser member is shown embodied in a
column. Due to spaces between the tubular mem
press of the type disclosed in United States Let
bers of the superstructure, the presser member
ters Patent No. 921,503, granted May 11, 1909, on
may be readily seized by the hand of the oper
ator no matter what the. position of the presser
In a press of the type speci?ed, the presser ,member may be, thus facilitating substantially
the operation of swinging the presser member
member is movable laterally over a work support
ing bed to any selected position over a die on the laterally into and out of position over a die on
bed, and also toone side of the bed so that a the cutting bed.
These and other important features of the in
sheet of material, such as a tanned skin, may be
readily placed on the bed and inspected prior to vention and novel combinations of parts will now
any cutting operation thereon and so. that a die be described in detail in the speci?cation and
or dies may be placed in a desired position on the then pointed out more particularly in the appende
sheet material. To perform a cutting operation ed claims.
In the drawing-—
the presser member is'swung into position 'over
20 the die and then, by tripping the usual clutch '
Fig. 1 is a perspective view of part of a click 20
mechanism, the presser member is caused to ing machine showing in the presser member one
strike the die to force the latterthrough the embodiment of the invention; and
sheet material. The presser member must be
Fig. 2 is a vertical section taken along the line
long'enough to reach practically all portions of II—II of Fig. 1.
25 the bed and strong enough to force the die
In Fig. l ‘of the drawing, a presser member 4
through the material. It follows‘ that the presser of special construction is shown mounted rigidly
an application'of Arthur Bates.
- member must be‘ strongly constructed. At the
- same time its Weight should be kept at a mini
mum‘tcon'sistent with the necessary strength‘, in
order 'thatfthe work of the operator in swinging
the presser. member may be minimized, thereby
conservingthe operator’s energy for the far more
important work. of inspecting the leather and
‘selecting and placing the dies.
' ' .' j
‘ It is an object of thisvinvention to provide an
effective presser member of a simple and durable
construction which will at the same time be rela
tively light in weight and readily movable ‘into
and out of operative position over a die on the
. To these ends, andin accordance with an im
reference numeral 4. Pivoted at 16 in the ma
chine frame is a trip lever l8 having a link con
nection 20 to a clutch lever (not shown). Se
cured to the front end of the trip lever I8 is a
handle 22. This handle is conveniently used to
position the presser member 4 'over a 'die on the 40
bed I4 andto swing the presser member away
having a striking surface suitable to contact a
die to force the latter through sheet material, in
,(not shown) and cause a pressure applying oper
presser mem
ber of cantilever construction comprisesa plate,
combination with a superstructure in truss for
mation secured to the plate to strengthen the
It will be understood that the truss for
50 mation is designed to afford strength, su?icient
for thepurpose while atthe same time making
it possible to keep the weight of the presser mem
ber at a minimum, due in part to the numerous
open spaces in such a superstructure andin part
; 55
and‘down movement in bearings 8 and H) of a
machine frame, part of which is shown at l2.
Supported by the machine frame is a bed or ,cut- 1
ting block Ill, the upper surface of the latter being
in a plane which is’ substantially parallel with
the plane of the lower face of the presser mem:
ber or beam indicated generally in Fig. 1 by the
from the die after the latter has been forced
through the Work piece, a downward movement
of the same handle 22serving to trip the clutch
portant feature of the invention,
upon‘ a post 6 supported for rotation and for up ,
to, the use of relatively slender, light-weight mem
ation of the presser member 4, it being under
stood in this connection that the post 6 is moved
downwardly upon tripping the clutch to effect
such movement of the presser member. Follow
ing ‘a downward movement of the presser mem
ber and post 6, these parts are immediately re
turned‘ to initial position so that the presser
member may be free to be swung to ‘one side
of the die which has just been forced into the “
sheet material on the die block I4. For a more
complete description of a press of this type, ref
side edges of plate 30 into the superstructure
erence may be had to the Bates patent cited above.
and thus to the post 6 and to the machine frame.
The braced formation also resists forces tending
to bend or displace the superstruture in direc
tions crosswise of the pressure member 4. It
will be observed, therefore, that in all parts of
the superstructure the relationship of the struts
Upon inspection of Figs. 1 and 2, it will be ob
served that the presser member 4 comprises two
plates. Of these, the upper is a steel plate 30
to which is secured an aluminum alloy plate 32
substantially co-extensive therewith and serv
ing to provide a suitable striking surface to con
tact and drive the dies through the sheet ma
10 terial being operated upon. The plate 30 is rela
tively thin and is reinforced by interconnected
ribs or ?anges 3i and 33 extending, respectively,
crosswise and lengthwise of the plate 3!] and
rigid therewith throughout their lengths. It is
to be understood that the aluminum plate 32 is
not necessary in all cases since the striking sur
faces of presser members of this type have long
been made of cast iron. However, for the quality
of lightness, it is preferred to use an aluminum
20 alloy plate of a suitable degree of hardness, more
particularly when it is desired to avoid damage
to the upwardly facing cutting edge of a die hav
ing cutting edges on both upper and lower surfaces.
Secured rigidly to the upper face of the plate
30 is a superstructure of truss formation de
signed to give the requisite strength to the presser
member while at the same time retaining the
advantage of lightness in the presser member.
30 This superstructure comprises a plurality of in
terconnected trusses disposed side by side and
extending substantially ‘the full length of the
plate 36. As shown these trusses comprise three
longitudinally extending tubular members 34, 36,
35 38, which are rigidly connected at their forward
ends by welding to the upper surface of the plate
38 and also rigidly connected at their rear ends
to a semicylindrical steel piece serving as a
clamp member 40. The lower endv of the clamp
40 member M! is also welded to the plate 30 at the
rear end of the latter. These tubular members
34, 36, 38, while rigidly connected at their front
and rear ends to the plate 39, are so spaced
throughout their intermediate portions with re
spect to the plate 39 and so curved from front
to rear that every part of each tubular member
is subjected to compression in resisting the tend
ency of the plate 39 to upward movement while
pressure is being applied to a die located near
the outer end 'of the presser member.
Secured to each of the tubular members 34
and 38 are a plurailty of struts 54, 56, 58 and 60
welded to each other and to the plate 30 and to
one of said tubular members to provide a tri
55 angular truss construction to transmit either
tension or compression, as the case may be at
any given instant, in a pressure applying opera
tion. As clearly indicated in Fig. 2, these struts
are also hollow, tubular members. To further
strengthen the superstructure the tubular mem
bers 34, 3t; and 38 are joined by tubular mem
bers 62, 64, ‘55, 68, serving as tie-rods, and ex
tending crosswise between the tubular members
to join the same into a rigidly welded structure.
65 The truss members or struts ltl, ‘l2, l4, 16 con
nected to the tubular member 36 are vertically
arranged, as indicated in Fig. 2, whereas the
truss members 54, 56, 58 and 60 connected at
their upper ends to the tubular members 34 and
70 38 are‘ inclined upwardly and inwardly toward
each other, thus givinga braced effect to the
superstructure due to the approach to a trian
gular formation crosswise of the superstructure
as clearly shown in Fig. 2. This braced arrange
75 ment is provided to, carry forces on the outer 01'
or truss members to each other is triangular
since a triangular truss formation is particularly
serviceable to the attainment of great strength 10
and rigidity without undue weight. It is impor
tant to note that no matter where force is ap
plied to the beam 4, the force of the blow is
transmitted to the post 6 and to the machine
frame which are strong enough to absorb it.
An advantage of the new presser member or
beam, perceived only after the construction and
testing of the ?rst beam of its kind, resides in
the ease with which it may be seized by the hand
of the operator no matter what its position with 20
respect to the bed. The tubular construction
therefore facilitates greatly the desired manipu
lation of the beam, in contrast to the situation
in prior constructions wherein it is necessary
under most circumstances to reach for the trip
ping handle at the front end of the beam even
though it causes the operator to leave his usual
position, or lose his stance, at the center of the
front of the bed. Furthermore, the new beam
does not cast the shadow of the old beams. The ,
result is that the work pieces on the cutting bed
are better lighted to a quite noticeable extent.
As shown most clearly in Fig. 1, there is a sec
ond clamp member 80 for co-operation with the
clamp member 40 in securing the presser arm 4
to the post 6, both clamp members 40 and 80
having openings at their lower ends for the arms
of a U-shaped clamp 82 utilized to bolt the
clamping members 40 andv 8B securely together.
At their upper ends the clamping members 40 and 40
80 are secured together by bolts one of which is
shown at 84.
Having described my invention, what I
claim as new and desire to secure by Letters
Patent of the United States is:
1. In a clicking machine, a work support, a post,
and a cantilever presser member supported by
said post, said presser member comprising a
striking plate and a strengthening superstructure
of tubular members in truss formation rigidly se
cured to said plate.
2. In a clicking machine, a work support, a post,
and a cantilever presser member supported by said
post, said presser member comprising a relatively
thin steel plate, an aluminum alloy plate secured
to the under side of said steel plate to serve as a
striking plate, and a strengthening structure in
truss formation rigidly secured to the upper side
of said steel plate.
3. A presser member for use in a clicking ma
chine comprising a steel plate, a semi-cylindrical
piece of steel welded to one end of the steel plate
in vertical relation thereto to serve as a clamping
member, and a strengthening structure in truss
formation rigidly secured to said steel plate and to
said clamping member.
4. A presser member for use in a clicking ma
chine comprising a striking plate and a plurality
of side-by-side interconnected trusses rigidly con
nected to said plate at all points of contact there 70
with and extending longitudinally thereof.
5. A presser member for use in a clicking ma
chine comprising a striking plate and a super
structure in truss formation rigidly secured to said
plate, said superstructure comprising a plurality 75
of steel members rigidly secured at their ends to
said plate and extending lengthwise of theiplate
in spaced relation thereto, and a triangular truss
rigid with each of said lengthwise members and
with said plate in an'organization wherein said
lengthwise members are rigidly connected by cross
6. A presser member for use in a clicking ma
chine comprising a striking plate, a semi-cylindri
10 cal piece of steel welded to one end of the steel
plate in Vertical relation thereto to serve as a
clamping member, and a superstructure in truss
formation rigidly secured to said‘plate and to said
clamping member, said superstructure comprising
15 tubular members rigidly secured to said plate at
their front ends and extending lengthwise of the
ends to said striking plate and extending in spaced
relation to said plate and lengthwise thereof, to—
gether with triangularly related struts or truss
members of tubular formation rigid with each ‘
other and with said striking plate and serving to 5
connect the three tubular members rigidly with
said plate, and tubular cross ties rigidly connect
ing said threetubular members.
8. In a clicking machine, a work support, a. post
and a presser member, said presser member com 10
prising a striking plate, a plurality of tubular re
inforcing members rigidly secured to the upper
surface of the plate adjacent to the forward end
thereof and converging upwardly and rearwardly,
and means connecting the rearward end of the
plate and the upper ends of said members to the 15
plate in an upward curve to said clamping mem
ber, and a plurality of triangular trusses rigid
with said longitudinally extending tubular mem
a presser plate connected at one end to the post
bers and with said plate in an organization where
in said longitudinally extending tubular members
are rigidly connected by cross ties.
7. A presser member for use in clickingma
chines comprising a striking plate and a strength
ening superstructure rigidly secured to said plate,
9. In a clicking machine, awork support, a post,
and extending forwardly over the surface of the 20
work support, a plurality of tubular reinforcing
members rigidly secured to the plate adjacent to
its forward end and converging upwardly and
rearwardly toward the post, and means connect
ing the upper ends of said members with the post.
said superstructure comprising three I tubular
members, rigidly secured at their front and rear
Без категории
Размер файла
575 Кб
Пожаловаться на содержимое документа