Year: 1887

page_text: Date of Application, 7th Mar., 1887
Complete Left, 7th Dec., 1887
Complete Accepted, 13th Jan., 1888
I, EDWARD WILSON, of Commercial Road, Exeter, in the County of Devon,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to a machine for pinning, striking or working leather and is
more especially adapted for working offal.
It consists of a drum to which a slow rotary motion is imparted by any suitable
means and which serves to support the work and present it to the action of the tools,
which are suspended over the drum in the manner hereinafter described.
The drum is preferably placed in an inclined position so that its rear end is lower
than its front end. Above the drum a guide way is supported parallel to the
longitudinal axis of the drum and in it two plates are mounted one above the other
and each capable of sliding in such guide way. Near each end of the top plate
a hanger or depending arm is provided, such hangers passing through elongated
slots in the lower plate. Between these hangers a bar is mounted so as to be
capable of rising and falling in a line parallel with the axis of the drum, for which
purpose one end of such bar is connected by a link to one of the hangers, while the
other end is free to slide longitudinally on the other hanger. Near each end of the
bar a link is arranged, such links being pivotted to the bar and also to the bottom
plate, and the links being each made in two parts with a spring (the pressure or
tension of which is adjustable) interposed between such parts.
The tools to act upon the leather, and which may consist of brushes, scrapers,
knives, or other tools suitable for working leather, are secured to the bar in a position
to bear upon the drum when the bar is in its lowest position, and the spring connection
formed by the links connecting the bar to the bottom plate will cause the tools to act
upon the leather placed on the drum with a yielding pressure.
A connecting rod actuated by a crank or eccentric has its forward end bifurcated
or forked so as to pass on either side of the rear hanger, and such forward end is
pivotted to the bar between such hangers. This forward end of the connecting rod
is bent or extends upwards approximately at right angles to the other part of
the rod beyond the pivot, and its upper end is connected to the lower or bottom
plate.

page_text: The operation of the apparatus is as follows:-A skin having been placed on the
drum between it and the tools suspended from above, the gradual rotation of such
drum will cause all parts of the skin to be successively brought under the action of
the tools. As the crank actuating the connecting rod revolves, a longitudinal
movement will be imparted to the bar to which the tools are secured which are thus
caused to move longitudinally over while bearing upon the skin upon the drum, the
two plates from which the bar is suspended moving together with the bar. Just before
the bar arrives at the end of its stroke, the upwardly extending portion of the
connecting rod which is secured to the bottom plate, causes the latter to move in
relation to the upper or top plate, the slots through which the hangers for guiding the
bar pass permitting such movement. The bar being connected by a link to one hanger
and capable of sliding up and down on the other, the movement of the bottom plate.
relatively to the top plate will through the links connecting the bottom plate to the
bar, cause such bar to move upwards and lift the tools from the skin on the drum. The
continued action of the crank will then return the parts to the position for making
a fresh stroke, when the return of the bottom plate to its orignal position will again
lower the tools into contact with the work, and the action will then be repeated.
In order to introduce the skin or hide between the drum and the tools it is necessary
to raise the guide carrying the top and bottom plates and the bar depending therefrom
to which the tools are secured. For this purpose the guide is carried by cranks formed
on two cross bars arranged one near each end of the guide and supported so as to be
capable of rocking in their bearings. Motion is imparted to one of such cross bars
(preferably by an arrangement of levers actuated by a pedal), whereby the cross bars
will be caused to make a partial rotation, and their cranks will thus lift the guide (and
with it the bar and tools) away from the drum in a line parallel with the axis of such
drum. After the work has been placed on the drum a reverse movement of the levers
actuating the cross bars carrying the guide, will return the whole of the parts to a
position to begin work.
In order to enable the workman to securely hold the work in position on the drum,
as it is carried forward by the latter to be submitted to the action of the tools, a flat
plate or bar is secured to the frame at or near the top end of the drum, and the skin
or hide is placed so that its upper edge lays over such plate or bar. The workman by
turning the skin or hide over the sharp angle of such plate or bar will easily be able to
hold same against the pulling or drawing action of the tools.
For working leather generally a transversely moving table might be substituted for
the drum, but I prefer to use the latter, and the requisite motion for feeding the work
to the tools may be imparted to such table or drum in any suitable manner.
Dated this 7th day of March 1887.

page_text: I; EDWARD WILSON, of Commercial Road, Exeter, in the County of Devon,
Engineer, 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 :-
My invention relates to a machine for pinning, striking or working leather and is
more especially adapted for working offal.
In the accompanying drawings Fig. 1 is a side elevation, and Fig. 2 a plan view of
my improved machine.
It consists of a drum A to which a slow rotary motion is imparted by any suitable
means, and which serves to support the work and present it to the action of the tools,
which are suspended over the drum in the manner hereinafter described. In the
drawing the drum A is shown as being actuated from the main driving shaft B, by
means of a pulley C mounted thereon, and which by a belt transmits motion to a
pulley D, on an intermediate shaft E, which also carries a worm, gearing with a worm
wheel F, mounted on the axis A¹ of drum A.
The drum A is preferably placed in an inclined position as shown, so that its rear
end is lower than its front end. Above the drum A. a guide way G is supported
parallel to the longitudinal axis of the drum, and in it two plates H, I, are mounted
one above the other, and each capable of sliding in such guide way. Near each end
of the top plate H a hanger or depending arm K, K³, is provided, such hangers passing
through elongated slots I', I', in the lower plate I. Between these hangers a bar L
is mounted so as to be capable of rising and falling in a line parallel with the axis
of the drum A, for which purpose one end of such bar is connected by a link M to the
hanger K', while the other end is free to slide longitudinally on the other hanger K.
Near each end of the bar L a link N, N', is arranged, such links being pivotted to the
bar and also to the bottom plate I, and the links being each made in two parts
with a spring 0, 0, (the pressure or tension of which is adjustable) interposed between
such parts.
The tools P, P¹, to act upon the leather, and which may consist of brushes, scrapers,
knives, or other tools suitable for working leather, are secured to the bar L in a position
to bear upon the drum when the bar is in its lowest position, and the spring connection
formed by the links N, N¹, connecting the bar L to the bottom plate I will cause
the tools P, P¹, to act upon the leather, placed on the drum A, with a yielding
pressure.
A connecting rod Q actuated by a crank R or eccentric on the main driving shaft B,
has its forward end bifurcated or forked so as to pass on either side of the rear
hanger K¹, and such forward end is pivotted to the bar L at S, between the

page_text: hangers K, K. This forward end Q₁ of the connecting rod Q is bent or extends
upwards approximately at right angles to the other part of the rod, beyond the
pivot S (as shown by Q2), and its upper end is connected to the lower or bottom
plate I.
The operation of the apparatus is as follows:-A skin having been placed on the
drum A between it and tho tools P, Pl, suspended from above, the gradual rotation of
such drum will cause all parts of the skin to be successively brought under the action
of the tools. As the crank R actuating the connecting rod Q revolves, a longitudinal
movement will be imparted to the bar L to which the tools P, P¹, are secured, which
are thus caused to move longitudinally over while bearing upon the skin upon the
drum, the two plates H, I, from which the bar L is suspended moving together with
the bar. Just before the bar L arrives at the end of its stroke, the upwardly extending
portion of the connecting rod Q, which is secured to the bottom plate 1, causes the
latter to move in relation to the upper or top plate H, the slots 11, 12, through which
the hangers K, K', for guiding the bar L pass, permitting such movement. The
bar L being connected by link M to hanger K' and capable of sliding up and down
on hanger K, the movement of the bottom plato I relatively to the top plate H, will
through the links N, N', connecting the bottom plate I to the bar L, cause such bar to
move upwards and lift the tools P, P', from the skin on the drum. The continued.
action of the crank R will then return the parts to the position for making
a fresh stroke, when the return of the bottom plate I to its original position will
again lower the tools P, P', into contact with the work, and the action will then be
repeated.
In order to introduce the skin or hide between the drum and the tools it is necessary
to raise the guide G carrying the top and bottom plates H and 1 and the bar L
depending therefrom to which the tools P, P, are secured. For this purpose the
guide G is carried by cranks T, T¹, formed on two cross bars U, U₁, arranged one
near each end of the guide G, and supported so as to be capable of rocking in their
bearings. Motion is imparted to one of such cross bars (preferably by an arrangement
of levers actuated by a pedal), whereby the cross bars will be caused to make a partial
rotation, and their cranks T, T, will thus lift the guide G (and with it the bar L and
tools P, P), away from the drum A in a line parallel with the axis of such drum.
After the work has been placed on the drum A, a reverse movement of the levers
actuating the cross bars U, U¹, carrying the guide G, will return the whole of the parts
to a position to begin work.
In order to enable the workman to securely hold the work in position on the drum,
as it is carried forward by the latter to be submitted to the action of the tools, a flat
plate or bar is secured to the frame at or near the top end of the drum A, and the
skin or hide is placed so that its upper edge lays over such plate or bar. The workman
by turning the skin or hide over the sharp angle of such plate or bar will easily bo
able to hold same against the pulling or drawing action of the tools.
For working leather generally a transversely moving table might be substituted for
the drum A, but I prefer to use the latter, and the requisite motion for feeding
the work to the tools may be imparted to such table or drum in any suitable
manner.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what I
claim is
1. In a machine for pinning, striking or working leather, mounting the tools on a
bar to which a reciprocating movement is imparted by a rod connected thereto, and
which extends up beyond such bar, and is connected to the bottom plate of two plates
capable of sliding in a guide way arranged parallel to the surface on which the skin
or hide is supported while being acted upon by the tools, the upper of such plates
having a hanger or arm at each end, which arms extend down through elongated slots
in the under plate, and to one of which the bar carrying the tools is connected by a

page_text: link, while its other end can slide longitudinally on the other hanger, the whole
operating substantially as and for the purposes specified.
2. Arranging the guide way referred to in the preceding claim so that it can be
raised when required to introduce the skin or hide to be operated upon, substantially
as specified.
3. The use of a flat plate or bar to enable the skin or hide to be held firmly when
being operated upon, by turning the skin or hide over the sharp angle of such plate or
bar, substantially as specified.