Improvements in or relating to Cutting Presses.
Year: 1895

page_text: Date of Application, 25th Apr., 1895
Complete Specification Left, 25th Jan., 1896-Accepted, 29th Feb., 1896
!
PROVISIONAL SPECIFICATION.
Improvements in or relating to Cutting Presses.
}
We, ALFRED POCHIN, trading as The Standard Engineering Co. of 43 Welford
Road, Leicester, Makers of Boot and Shoe Machinery, FRANK HOWARD POCHIN,
Draughtsman, and HENRY ADDISON, Manager, of the same address, do hereby
declare the nature of this invention to be as follows:-
This invention has reference to cutting presses of the type in which a vertically
reciprocating head descends upon a knife placed upon material, laid on the bed
plate, and forces the knife through the material, thereby producing the required
shape or blank.
The above presses are used in the manufacture of boots and shoes for cutting out
soles, heels, linings, and uppers.
r
The presses as at present constructed, are attended with some little danger in
their operation as, in consequence of not being provided with efficient brake
or stopping mechanism, the reciprocating head sometimes descends unexpectedly,
while the operator is removing the knife, and the loss of a finger, or other injury
to the operator's hand is the result.
The present invention is designed to apply controlling mechanism to the said
presses, by means of which the reciprocating head is positively brought to rest at
the completion of its upward stroke and prevented descending on to the knife,
until allowed to do so by the operator himself.
For this purpose we employ suitable clutch mechanism which may be put into,
and out of action, by the operator depressing or releasing a treadle with his foot.
One: convenient form of construction consists in mounting upon the driving
shaft, or shaft from which the reciprocating head is actuated, a disc, or
equivalent, provided with a shoulder, projection, or notch thereon, arranged in such
a position as to engage with an arm, lever, or other device, operated by the treadle
before referred to, at the time when the reciprocating head, reaches the full extent
of its upward stroke, and thereby lock the head in that position.
"
The invention is not limited to the particular mechanism described, as this may
be varied considerably within the main lines of the invention.
Dated this 25th day of Anril 1895.
BOULT & WADE,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or relating to Cutting Presses.
We, ALFRED POCHIN, trading as The Standard Engineering Co., of 43 Welford
Road, Leicester, Makers of Boot and Shoe Machinery, FRANK HOWARD POCHIN,
Draughtsman, and HENRY ADDISON, Manager, of the same address, do hereby
declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
"
in which

page_text: vertically réciprocating head descends upon a knife placed upon material, laid
on the bed plate, and forces the knife through the material, thereby producing the
required shape or blank.
The above presses are used in the manufacture of boots and shoes for cutting out
soles, heels, linings, and uppers.
The presses as at present constructed, are attended with some little danger
in their operation as, in consequence of not being provided with efficient brake
or stopping mechanism, the reciprocating head sometimes descends unexpectedly,
while the operator is removing the knife, and the loss of a finger, or other injury
to the operator's hand is the result.
The present invention is designed to apply controlling mechanism to the said
presses by means of which the reciprocating head is positively brought to rest at
the completion of its upward stroke and prevented descending on to the kuife, until
allowed to do so by the operator himself.
For this purpose we employ suitable clutch mechanisin which may be put into,
and out of action, by the operator depressing or releasing a treadle with his foot.
Oue convenient form of construction consists in mounting upon the driving shaft,
or shaft from which the reciprocating head is actuated; a disc, or equivalent,
provided with a shoulder, projection, or notch thereon, arranged in such a position
as to engage with an arm, lever, or other device, operated by the treadle before
referred to, at the time when the reciprocating head, reaches the full. extent of its
upward stroke, and lock thereby the head in that position.
The invention will be fully understood from the following further description in
reference to the accompanying drawings wherein,
Figure is an end elevation of a cutting press of the character described
embodying our invention.
Figure 2 is a partial front elevation of the same..
Figures 3 and 4 are modifications of details hereinafter more fully described.
Only so much of the machine is shown in the drawings and will be hereinafter
described and referred to as is necessary to illustrate the invention.
Similar letters of reference represent corresponding parts throughout the
drawings.
A represents the driving shaft upon one end of which are the usual fast and
loose driving pulleys (not shown in the drawings) and upon the other end a brake
pulley B, the latter being acted upon by a friction brake band B¹ connected
by a rod B2 Fig. 1 and arm B3 Fig. 3 to the shaft B4 having thereon a
treadle B 5:
The brake band is kept normally in contact with the pulley B by a powerful
spring C and is removed from contact therewith to set the machine in motion by
the operator depressing the treadle B-5 by his foot...
.
The driving shaft has also mounted thereon near its end a spur-wheel gearing
into a similar wheel (not shown in the drawings) on the shaft D on the end of
which is a disc E eccentric on the face of which is a connecting rod F pivotted at
its upper end to a rod G screwed into the head G₁ which reciprocates vertically
relatively to the bed plate H upon which are placed the knife and material to be
cut into blanks thereby as is well understood.
So far the machine described is of well known construction.
According to this invention we provide for bringing the head to rest at the
completion of its stroke and when in its highest position as shown in Figure 1.
For this purpose we may mount on the shaft D a disc and form thereon, or on
the usual disc E already on the said shaft, a shoulder E¹ or its equivalent adapted
to be engaged by an arm J or the like device when the head has finished its upward
travel, and lock the said disc against further movement until it and the arm Jare
again disengaged by the operator as hereinafter described.
To enable the said arm to be adjustable relatively to the shoulder so that they
may become engaged when the head is in the position mentioned, the said arm may
1

page_text: the boss J3 on the bottom of which is fastened by one or more set screws J 4 to
the treadle shaft B 4.
The action of the improved press is as follows.
Upon the operator depressing the treadle B 5 by his foot, the belt shipper lever
(which forms a usual part of the press and is therefore not shown in the drawings).
shifts the belt from the loose to the fast pulley as is well understood. The
brake band B' is simultaneously removed from contact with the pulley B and
the arm J from engagement with the dise shoulder E' so that the machine is.set
in motion and the head descends on to the knife and material on the bed plate H
to cut out the blanks or shapes required.
Just immediately prior to the head reaching its highest position the operator
removes his foot from the treadle whereupon under the influence of the spring C
the treadlesis raised, the belt shifted from the fast to the loose pulley, the band B1
pressed against the surface of the pulley B and slows its motion and the arm J
which is now pressing against the periphery of the disc E engages the shoulder El
thereof as soon as it arrives in contact therewith.
'
as
When it is desired to run the press at a very high speed such
would possibly
tend to break off the end of the arm J upon its sudden contact with the shoulder E!
we may combine with the said arm a strong spring to intercept the shock or
concussion.
One form of construction for this purpose is shown in Figure 3.
The lower part of the arm J is encircled by a strong spring K located in a
tube L integrally or otherwise attached to a boss L' on the treadle shaft B4.
Upon the arm J and shoulder E' coming suddenly into engagement a collar J 5.
fast on the end of the said arm compresses the spring between it and a cap L 2
screwed into the upper end of the tube L.
The arm J and shoulder E! may be placed in and out of contact by the spring C:
and treadle B 5 as hereinbefore described in reference to Figures 1 and 2.
In the modification shown in Figure 4 the arm or rod J, collar J 5 thereon,.
tube L cap L2 and spring K are all (except rod J which is shortened as shown).
similar in construction and action to those in Figure 3.
The boss L of the said tube is however loosely hung on a pivot M attached to
the standard of the machine so as to allow the end of the rod J when the latter is
perpendicular to come against the shoulder E¹ as shown.
To remove the end of the rod out of the path of the shoulder E¹ as is required
when the press is to be set in motion we employ a vertical arm N the upper end of
which may enter the tube L as shown or be otherwise connected thereto and the
lower end furnished with a boss N¹ for connection to the treadle shaft B 4.
Upon the operator depressing the treadle as herein before described the arm N
will be brought nearer to a vertical position and in doing so will move the tube L
on its pivot M and the end of the rod J away from the shoulder E'.
Having now particularly described and ascertained the nature of our said inven-
tion and in what inanner the same is to be performed we declare that what we
claim is
1. In a cutting press of the character described the combination of a disc having
a shoulder, notch, projection or equivalent thereon and an arm, rod or the like
engaging device therefor, substantially as and for the purpose described.
2. In a cutting press of the character described the combination with the
reciprocating head and connective mechanism between it and the shaft from which
it receives its motion of a disc on the said shaft provided with a shoulder, notch,
projection or the like, an arm or other device to engage the latter and means for
placing the same in and out of engagement substantially as and for the purpose
described.
3. In a cutting press of the character described the combination of a disc
having a shoulder, notch, projection or the like, thereon, a spring-controlled
engaging device therefor constructed, arranged and operating substantially in the

page_text: manner and for the purpose described and illustrated in Figures 3 and 4 of the
accompanying drawings.
4. The improved construction of cutting press of the character described,
substantially as specified and illustrated in the accompanying drawings.
Dated this 24th day of January 1896.
Witness-
E. N. LEWIS,
Berridge Street Chambers,
Leicester.
FRANK HOWARD POCHIN.
HENRY ADDISON.
Boult & Wade,
Agents for the Applicants.