Improvements in or appertaining to Presses Used in the Manufacture of Boots and Shoes, and for other purposes.
Year: 1895

page_text: Date of Application, 24th Apr., 1895
Complete Specification Left, 24th Jin., 1896-Accepted, 29th Feb., 1896
PROVISIONAL SPECIFICATION..
Improvements in or appertaining to Presses Used in the Manufacture
of Boots and Shoes, and for other purposes.
I, WILLIAM ROBERT MUDD, trading as W. R. Mudd & Co. of 7 Newarke
Street, Leicester, Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention relates to improvements in or appertaining to presses used in the
manufacture of boots and shoes and for other purposes.
In various kinds of machines used in the boot and shoe trade for heel attaching
and also for what is technically known as "clicking," i.e. pressing upon a knife
placed face downwards upon leather from which the quarters or other parts of a
boot or shoe are to be cut, an intermittent movement of the head of the machine is
desirable. This movement has been hitherto a source of great danger to the
operators of such machines.
In machines such as before mentioned the treadle and driving mechanism has
consisted of various features arranged as follows;-The treadle lever has been
mounted upon a spindle passing along the bottom of the framing. A vertical arm
of this lever has served through the medium of a set screw to press against the
lower arm of a lever provided with suitable projections to carry the brake-cup and
friction cam for acting upon the brake pulley and friction driving pulley
respectively. In machines arranged with mechanism such as described, there has
been great uncertainty as to what point of its movement the head of the machine
would stop at and it is to obviate this disadvantage and ensure the stoppage of the
head of the machine at the highest point of its movement that my invention is
designed.
This invention therefore consists in arranging on the driving spindle or shaft of
the machine a cam upon the periphery of which a roller carried in the jaw of a
suitably shaped forked lever may revolve, the lower end of the latter being
connected to the treadle lever at a convenient point.
A portion of the periphery of the said cam is cut away and upon the operator
removing his foot from the treadle lever, the latter through the medium of the
usual spring releases the friction driving pulleys and simultaneously applies the
brake-cup to the brake pulley and the roller carried in the jaw of the forked lever
will at the same time enter the recess or cut away portion of the cam as before
described and remain in such position until the operator again puts the machine
into operation by depressing the treadle lever.
I preferably make the forked lever with a slotted head so that it may surround
the driving spindle or shaft at the same time allowing for the movement consequent
upon its connection with the treadle lever.
Although the before mentioned mechanism has been described as applied more
especially to machines used in the boot and shoe trade, I wish it to be understood
that with slight variation it may be made equally applicable to other machines of a
like nature.

page_text: Improvements in or appertaining to Presses Used in the Manufacture
of Boots and Shoes, and for other purposes.
I, WILLIAM ROBERT MUDD, trading as W. R. Mudd & Co. of 7 Newarke
Street, Leicester, Engineer, do hereby declare the nature of this invention aud in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention relates to improvements in or appertaining to presses used in the
manufacture of boots and shoes and for other purposes.
In various kinds of machines used in the boot and shoe trade to effect the
operation known as "clicking" and for other purposes both in the boot and shoe
and other trades an intermittent movement of the head is desirable. This move-
ment, however, has hitherto been a source of great danger to the operators of such
machines in consequence of the liability of the machine being stoppel with the
head in other positions than its highest. My invention is designed to overcome
this defect and ensure the machine being stopped with its head in the highest
position.
This invention therefore consists in arranging on the driving spindle or shaft of
the machine, a cam upon the periphery of which a roller carried in the jaws of
suitably shaped plates may revolve, the lower end of the latter being connected to
the treadle lever at a convenient point.
A portion of the periphery of the said cam is cut away and upon the roller
entering the said recessed portion of the cam the treadle lever, through the medium
of the usual levers and spring releases the friction driving pulleys and simul-
taneously applies the brake cup to the brake pulley and remains in such position
until the operator again puts the machine into operation by depressing the treadle
lever.
I preferably make the plates with slotted heads so that they may surround the
driving spindle or shaft at the same time allowing for the movement consequent
upon their connection with the treadle lever.
In order that the invention may be fully understood I will now proceed to
describe the same with reference to the accompanying drawing wherein
Figure 1 is a sectional elevation of a "clicking" press only so much of the
machine being shown as will enable the application of my invention thereto to be
clearly seen.
Figure 2 is a cross section on the line X. X. Figure 1.
A is the standard or framing, B the head, C the cutting block or board, D the
eccentric or driving shaft and E the eccentrics connected by rods E to the head B.
Secured on the shaft D is a pulley D' with which the loose pulley F is caused to
engage when the treadle is depressed as hereinafter described. G is the treadle
keyed on a shaft H pivoted to the frame A of the machine and on the said
shaft H is secured a lever or equivalent H to operate a brake I which when the
treadle is in its raised position engages with a counterbalanced brake wheel I' on
the shaft D and assists in stopping the rotation of the said shaft.
The treadle Gis connected by rod G' to the system of levers J. J1 J 2 pivoted
at K K' to a fixed part of the machine, the end of the lever J 2 being adapted to
engage with a collar F on the pulley F. The treadle is maintained in its highest
position by the spring G 2. Keyed on the shaft D immediately above the treadle
is a cam L having a recessed portion L' as shown in Figure 2. M. M. are plates
held together by bolts M M 2 and enclosing the cam L. On the bolt M' is
mounted an anti-friction roller N. The plates M M are slotted as shown at M 3
to allow the shaft D to pass and the bolt M 2 passes through a slot G 3 in the
treadle G. Secured to the plates M M and just above the treadle is a recessed

page_text: bar O in which a pad O¹ of felt, india-rubber or other resilient material is placed
against which the treadle presses when rising.
The action of the machine is very simple and is as follows, that is to say ;-The
loose pulley F is continuously rotated by means of a belt not shown in the drawings.
The leather or other material to be cut or pressed is placed upon the cutting
block C and the knives or other devices are properly arranged thereon. By
depressing the treadle G the pulley F, through the medium of levers J, J1 J2 18
caused to engage with the pulley D' and the shaft D is thereby rotated in the
direction of the arrow. At the same time the roller N is withdrawn from engage-
ment with the cam L owing to the descent of the plates M M which are connected
to the treadle through the bolt M 2 as hereinabove described. The rotation of the
shaft D operates through the eccentrics E and rods Ę to draw down the head B
and completes the "clicking" or pressing operation in the usual way.
If the treadle be released it rises under the action of the spring G 2 and through
a padded bar O raises the plates M M and roller N until the latter comes in
contact with the periphery of the cam L. As soon as the head B is at the upper
limit of its travel the recess L¹ in the cam L comes opposite the roller N and the
treadle rises to its highest point and through the levers J J J 2 withdraws the
pulley from engagement with the fixed pulley D', at the same time the brake I
rises and engages with the brake wheel I¹ stopping the machine.
It will be readily understood that the treadle cannot rise high enough to
withdraw the pulley F from the pulley D¹ until the recess in the cam L is opposite
the roller N and therefore the machine will only be stopped when the head B is at
its highest point.
Although the before mentioned mechanism has been described as applied more
especially to machines used in the boot and shoe trade, I wish it to be understood
that with slight variation it may be made equally applicable to other machines of a
like nature.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is ;-
1. In a machine of the kind described the provision of a cam on the driving
shaft which cam prevents the operating treadle from rising and stopping the
machine except when the head of the machine is in its highest position, substan-
tially as described.
2. A machine of the kind described having its starting and stopping gear
constructed substantially as described with reference to the accompanying drawing
and operating as specified.
Dated this 24th day of January 1896.
W. P. THOMPSON & Co.,
31 High Holborn, W.C., Patent Agents for the Applicant.