provements in Machinery or Apparatus for Scraping, Paring Smoothing, or Trimming Leather or Hides
Year: 1895

page_text: Date of Application, 29th Apr, 1895-Accepted, 1st June, 1895
COME LEIE DIECIFICATION
Improvements in Machinery or Apparatus for Scraping, Paring
Smoothing, or Trimming Leather or Hides
I, JULIUS SIEGER, of 83 Prinzen Allee, Berlin, in the German Empire,
Carpenter, 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
-
This invertion relates to machinery or apparatus for scraping, paring, smoothing
or trimming leather or hides
The object of the present invention is to produce a machine in which the cutting
instrument is caused to move in a rectilineal direction with the aid of an oscillating
pendulum Hitherto, in michines of this class, the cutting instrument described
rotary motion, the leather to be tiented being stretched upon a suitably bent
frame The unevenness of the tension hereby obtained constantly caused the
leather to be wavy or undulatory and to bend while bein acted upon by the
cutter, a rough surface resulting
The defects above referred to are overcome by the present construction of
machine The minner in which the pendulum is suspended not only enables the
cutting instrument to be guided in a rectilinear duection, but also en ibles the
pressure of the same upon the hide to be equalized
The hide is caused to move forwards on a self acting table of any suitable
construction
In the accompanying drawings, in which similar letters refer to corresponding
parts in all the figures,
Fig 1 is
side elevation of a machine constructed in accordance with the present
invent on and shewing the parts in the operating position Fig 2 is a similar
view but hewing the parts out of operation
Fig 3 is a plan corresponding with Fig 1
Fig 4 is a horizontal section on the line e-x Fig 2
Fig 5 is an end view corresponding with Fig 1
Figs 6 to 10 are details of parts hereinafter more fully referred to
A two armed lever cd is pivotted at e in a frame D formed of four oblique
uprights or standards
The lever arm d is connected by a pivot f with the connecting rod 9 this in turn
being jointed to a bent lever h swinging upon the centie pin The outer end
of the lever arm is furnished with an adjustable weight n by means of which the
parts mentioned are maintained in the position shewn in Fig 2 On applying
pressure to the treadle m the lever arm is caused to swing downward as will be
readily seen thus causing the parts to assume the position shewn in Fig 1 A
frame H (Figs 8, 9, and 10), which may be guided vertically by means of the
pins or projections 1, 2, 3, 4 5, 6 may be raised or lowered as occasion may
require The frame H is operated by means of a lever F carried in the bearings K
on the said frame and having its fulcrum at G, the free end of this lever resting
upon a pin projecting from the rod g When in a raised position the rounded ends
of the projections 1-6 protrude above the surface of the table and facilitate
the moving of the flat plate upon which the hide in course of being treated is
stretched
The lever arm e is forked and grasps the upper end of the pendulum rod a which
extends nearly to the table E and which may be made to oscillate by means

page_text: of a rod O connected with the crank shaft P and operated by a crank handle »
(see Fig 3)
The trunnions 6 upon which the pendulum rod a is hung, is elongated on both
sides and passes into a three armed piece A (Figs 1, 6 and 7), the horizontal arms
of which are guided in vertical grooves in the bars B, C, (Fig. 1 and 6) formed
in the frame, in such a way that on imparting motion to the treadle m both sides of
the piece A are lowered in unison
These
The caps av are connected together by two rods w, and are so arranged on the
square pendulum rod a that they may he readily moved up and down thereon
The cap a is provided with a pin y which works in the slot and the cap v 15
connected loosely with the tool (or cutter) holder r by means of the rod u
rods, which act as springs, are fastened to the cap and can, by the aid of
screws or other suitable appliances (or by the employment of dovetul grooves), be
connected or disconnected with as desired
The former is suitable when special work is being treated, such for instance as
the scraping and smoothing of leather
The tool holder is finally connected with a pint projecting from the pendulum
rod a and caries the cutter s at its lower extremity
The result of this arrangement is that (provided the cap and tool holder r arc
strongly connected and the form of the groove z is as indicated in the drawings for
example) during the oscillation of the pendulum aim a the tools will describe a
rectilinear motion, it being raised by the movement of the pin y along the groove
to a height corresponding to the level to which the end of the pendulum arm will
sink while describing an ac
It also happens at the same time that, by the sinking of the point b on operating
the treadle m, the rectilinear course of the deepest point of the tool
can be made
still deeper, in other words it can be passed over the leather with a much greater
amount of pressure
If the rods u be disconnected from the tool holder and screwed on (by means
of a thumb screw which is not shewn) to the pendulum rod a, the tool will then
describe a simple circular motion in conjunction with the pendulum
In this case
the leather must, of course, be stretched upon a bed or saddle which has been suitably
hollowed out (ec the dotted lines in Fig 1) This method of treatment can be
used without causing any of the attendant disadvantages herein before mentioned
especially if it is desired to live the leather greater thickness (such for example
as when it is requned for sole leather)
The tool to be used for this purpose consists of a sheive or roller capable of
being inserted in the too' holder
Having now particularly described and ascertamed the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
-
Machinery or apparatus for paring or smoothing leather or hides, in which the
cutting instrument is attached to a pendulum iod so Jointed and guided as to
impart a rectilinear movement to the cutting instrument, and in which the tool
holder is connected interchangeably with a cap on the pendulum rod in such a
manner that it may if desired be disconnected therefrom and be firmly connected
with the pendulum rod, substantially as described and illustrated
Dated this 29th day of April 1895
EP ALEXANDER & SON,
Chartered Patent Agents,
19, Southampton Buildings, Chancery Lane, London, WC,
Filing Agents