Improvements in Leather Dressing or Planing Machines.
Year: 1889

page_text: Date of Application, 30th Sept., 1889
Complete Specification Left, 26th June, 1890-Accepted, 9th Aug., 1890
PROVISIONAL SPECIFICATION.
Improvements in Leather Dressing or Planing Machines.
ADOLF JACOBSEN, Berlin Germany Leather Manufacturer, do hereby declare the
nature of this invention to be as follows:-
My invention relates to improvements in leather dressing or planing machines and
has for its object the better and cheaper preparation of leather. After the same has
been tanned, it is necessary to equalize or produce a perfectly even surface, and
consists in planing off all unevenness.
This process has been performed up to the present, by means of scraping, or any
other convenient process, and is therefore not only troublesome but expensive, as it
takes an amount of time to dress each separate piece of leather in order to get a
perfectly even thickness and smooth surface. Further in this method the residue was
wasted as it consisted of scrapings.
To carry out my invention I construct a machine, hereinafter described and
illustrated in the accompanying drawing.
Fig. 1 shows a front elevation, and
Fig. 2 an end elevation of my invention.
The machine is of the most simple construction and consists of a roller A, over
which the leather runs and from which it is conducted to the two rollers B and C,
situated in a bigher position. When at work the rollers A and C, run in the same
direction, while B runs in the opposite direction.
Between the rollers B and a knife D is situated in a horizontal position lying
near roller B.
The great feature of my invention is the difference in the surfaces of the two
rollers B and C. B. having a soft or elastic surface such as an iron roller covered
with leather or other suitable material, whilst C has a hard surface such as steel or
iron, which is to effect the following purpose. As soon as the leather which is to be
equalized or smoothed, is inserted between the rollers, the rough or uneven side being
turned downwards, the smooth side will be pressed against the hard roller C. As this
roller resists the pressure of the leather, the unevenness of the same will be pressed
out on the other side, and press against the surface of the roller B; in consequence of
the elasticity of the roller B, the unevenness of the leather will be pressed out. As
soon as the rollers are set in motion they push the leather towards the knife D, which
begins shaving the same. With the continued motion of the rollers and consequently
continued forward motion of the leather, the knife will shave off all those projections
or unevenness pressed out in its passage through the rollers. By this arrangement
more or less large pieces, according to the kind of leather under treatment will be
shaved off, which may be utilized.
The machine may be used for tanned leather in a moist, as well as in a dry state;
for greased or ungreased leather.
13
1000
COMPLETE SPECIFICATION.
Improvements in Leather Dressing or Planing Machines.
I, ADOLF JACOBSEN, 10 Krausenstr. Berlin, W. 41, Germany Leather Manufacturer
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 improvements in leather dressing or planing machines and

page_text: has for its object the better & cheaper preparation of leather. After the same has
been tanned it is necessary to equalize or produce a perfectly even surface and consists
in planing off all unevenness.
This process has been performed up to the present, by means of scraping or any
other convenient process and is therefore not only troublesome but expensive as it
takes an amount of time to dress each separate piece of leather in order to get a
perfectly even and smooth surface. Further in this method the residue was wasted as
it consisted of scrapings.
To carry
out my invention 1 construct a machine hereinafter described and
illustrated in the drawing filed with my provisional application.
Fig. 1 shows a front elevation, and
Fig. 2 an end elevation of my invention.
The machine is of the most simple construction and consists of a roller A. over
which the leather runs and from which it is conducted to the two rollers B and C
situated in a higher position. When at work the rollers A and C run in the same
direction, while B runs in the opposite direction.
Between the rollers B and C a knife D secured to the framework of the machine by
screws E is situated in a horizontal position lying between the rollers B & C, nearer
to C.
The great feature of my invention is the difference in the surface of the two
rollers B and C. B having a soft or elastic surface such as an iron roller covered
with leather or other suitable material whilst C has a hard surface such as steel or
iron which is to effect the following purpose. As soon as the leather which is to be
equalized or smoothed is inserted between the rollers the rough or uneven side being
turned downwards the smooth side will be pressed against the hard roller C. As
this roller resists the pressure of the leather the unevenness of the same will be
pressed out on the other side and press against the surface of roller B. In con-
sequence of the elasticity of the roller B the unevenness of the leather will be pressed
out. As soon as the rollers are set in motion they push the leather towards the
knife D which begins shaving the same. With the continued motion of the rollers
and consequently continued forward motion of the leather, the knife will shave off all
those projections or unevenness pressed out in the passage through the rollers. By
this arrangement more or less large pieces according to the kind of leather under
treatment will be shaved off which may be utilized.
The machine may be used for tanned leather in a moist as well as in a dry state for
greased or ungreased leather.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
.
1. A machine for dressing and planing leather and other material consisting of a
roller B having a soft or elastic surface and a roller having a hard surface in
combination with a knife D substantially as described and for the purpose set forth.
Dated this 26th day of June 1890.
E. EATON,
27, Martin's Lane, Cannon Street, E.C., Agent for Applicant.