Improvements in and relating to Leather Paring Machines.
Year: 1891

page_text: Date of Application, 29th Apr., 1891
Complete Specification Left, 27th Feb., 1892-Accepted, 2nd Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in and relating to Leather Paring Machines.
We WILHELM HARTMANN and JULIUS THOMSON, both of Offenbach on the
Main, in the Empire of Germany, Machine Maker and Merchant respectively
do hereby declare the nature of this invention to be as follows:-
:―
This invention relates to a leather paring machine which performs, by mechanical
means, the paring which hitherto, in the manufacture of leather, could only be
performed in a satisfactory manner by manual labour.
In the Specification of our Patent application No. 5010 A.D. 1890, a paring
machine is described in which the hide is laid with the fleshy side downwards on
the table plate, immediately over a rotating knife or knives, and these latter
are adapted to attack the fleshy side and perform the operation of paring in a
simple and efficient manner.
By the present invention, the hide, instead of being drawn over the rotating
knife, is drawn under it, and the knife so arranged above the table that the work-
man has the side of the hide which is to be pared constantly in view.
The knife axle is situated in a frame which is connected with the table in such
a way that the knife disc can be lowered or raised simultaneously with the table
by means of a foot lever arrangement. Two drums are mounted in the supports
and the periphery of these drums is lower than a presser foot or block located in
a suitable position on the frame, which presses the hide to be treated into the
opening of the table. Between the two drums, the lower carrying roller is placed,
whilst the upper carrying roller is mounted in arms pivoted to the table and is
actuated by the two springs fixed on each side of the table which tend to press the
roller downwards. A belt pulley is fixed on the axle of the upper carrying roller.
A spring which presses the hide against the pressure block is fixed on the front
edge of the table.
The method of operating this machine is as follows:
The hide to be pared is laid over the lower carrying roller with the fleshy side
upwards. The foot lever is then pressed down in such a way that the upper
carrying roller presses against the hide and draws the same over the presser and
under the rotating knife disc. The table with the knife disc can be placed
In place of a
exactly against the pressing stamp by means of adjustable screws.
fixed presser stamp a pressure roller can be used.
It is evident that various alterations can be made in the above described machine
without thereby altering the principle of the invention.
The machine can be equally well provided with a vertically or otherwise
inclined table if required. Also, the arrangement of the knives on the cutting
disc can, in addition to the manner described, be constructed in the way shown in
Figures 7 and 8 of the Patent Specification aforesaid.
Dated this 28th day of April 1891.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Leather Paring Machines.
We, WILHELM HARTMANN and JULIUS THOMSON both of Offenbach on the
Main, in the Empire of Germany, Machine Maker and Merchant respectively
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 invention relates to a leather paring machine which performs, by mechanical
means, the paring which hitherto, when leather was being worked up into goods,
could only be performed in a satisfactory manner by manual labour.
In the Specification of our Patent application No. 5010 A.D. 1890, a paring
machine is described in which the hide is laid with the fleshy side downwards on
the table plate, immediately over a rotating knife or knives, and these latter are
adapted to attack the fleshy side and perform the operation of paring in a simple
and efficient manner.
By the present invention, the hide, instead of being drawn over the rotating
knife, is drawn under it, and the knife so arranged above the table that
the workman may have the side of the hide which is to be pared constantly
in view.
The invention will be best described by aid of the accompanying sheet of
drawings, on which :-
Figure 1 is a side elevation, with parts in section, of a machine constructed
according to our invention.
Figure 2 is a front elevation also with some of the parts in section, and
Figure 3 is a plan view of Figure 1.
Figure 4 is an enlarged view of one of the parts as hereinafter described.
Similar letters of reference refer to similar parts throughout the Specification.
In these figures-
D, is the knife axle, situated in a frame C, which frame C is connected with the
table B in such a manner that the table B can be raised or lowered simultaneously
with the knife disc E by means of a foot lever arrangement, as shown in dotted
lines.
Two drums P P are mounted in the stand of the machine, and the uppermost
part of the periphery of these drums is lower than a presser foot or block H,
suitably located on the frame, which foot or block presses the hide to be treated
into the opening of the table B. Between the two drums P P, the lower carrying
roller M is placed, whilst the upper carrying roller N is mounted in arms
pivoted to the table B and is controlled by the two springs RR, fixed on each
side of the table, which tend to press the roller downwards. A belt pulley S is
fixed on the axle of the upper carrying roller N. A spring T, Figures 1 and 4,
which presses the hide against the pressure block H, is fixed on the front edge of
the table B.
The machine works as follows:-
The hide to be pared is laid over the lower carrying roller M with the fleshy
side upwards. The foot lever is then pressed down in such a manner that the upper
carrying roller N presses against the hide and draws the same over the presser
block or foot H and under the rotating knife disc knives E. The table B, with
the knives E, can be placed exactly against the presser block or foot H by means
of adjustable screws. In place of a fixed presser block or foot, a pressure roller
can be used.
It is evident that various alterations can be made in the above described machine
without thereby altering the principle of the invention.
The machine can be equally well provided with a vertically or otherwise inclined
table, if required. Also the arrangement of the knives on the cutting disc can, in

page_text: addition to the manner described, be constructed in the way shown in Figures 7
and 8 of the Patent Specification No. 5010 of 1890 aforesaid.
Having now particularly described and ascertained the nature of our said inven
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. In a machine of the kind described, the combination, with the axle carrying
the knife disc E, of a frame connected firmly with the table B and which can be
raised and lowered along with the axle whilst the hide under treatment is drawn
away over a fixed presser block or foot or pressure roller.
2. In a machine of the kind described, the employment of a carrying roller N in
connection with the table B, which, on the lowering of the table, presses against
the hide and draws it away under the knives E.
Dated thie 26th day of February 1892
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicants.