A NEW OR IMPROVED MEANS AND APPARATUS EMPLOYED IN THE TREATMENT OF LEATHER DURING AND AFTER THE 'STUFFING' OPERATION
Year: 1876

page_text: LETTERS PATENT to William Lawies Jackson, of Leeds, in the County of
"
York, for the Invention of A NEW OR IMPROVED MEANS AND APPARATUS
EMPLOYED IN THE TREATMENT OF LEATHER DURING AND AFTER THE 'STUFFING'
OPERATION"
PROVISIONAL SPECIFICATION left by the said William Lawies Jackson at
"
the Office of the Commissioners of Patents on the 27th April 1876.
WILLIAM LAWIES JACKSON, of Leeds, in the County of York.
A NEW OR
IMPROVED MEANS AND APPARATUS EMPLOYED IN THE TREATMENT OF LEATHER
DURING AND AFTER THE STUFFING OPERATION."
In the stuffing operation, known as "mill" or "drum" stuffing, I use the
ordinary receiver for the leather, and over or connected with this receiver I mount
a tank in which is placed the dubbing or stuffing material.
A communication is made between the receiver and tank by means of tubes,
through which the dubbing or stuffing is conveyed into the receiver; and in order
to give an additional heat to the dubbing or stuffing as it passes into the receiver,
so that it
can be better received by the leather, steam is injected into the
tubes at any convenient place. The other parts of the machine are of ordinary
construction.
After the leather has gone through the operation of "stuffing" by the process
known as "mill" or "drum" stuffing, it is at present taken therefrom and allowed
to cool gradually or is allowed to revolve in the drum or cylinder with the door
open, the result is that the "stuffing" or dubbing being in a liquid state oozes out
during the "slicking" or "sleaking" process following and a large quantity of the
"stuffing" is wasted.
Now in order to facilitate the carrying on of the next process immediately I
remove the "stuffed" material or leather from the apparatus in which it is
"stuffed," and place it in another receptacle closed or open and made to revolve
and I blow in upon it cold air by means of a fan "blower" or other known means,
or blow cold air into the same receptacle in which the leather has been " stuffed;"
this has the effect of causing the "stuffing" or dubbing in the leather to congeal,

page_text: set, or chill; ice or other cooling material may be used in this process. Bythi
operation the cooling process is much accelerated, the dubbing is fixed in th
leather more uniformily, a great saving of "stuffing" or "dubbing" and of time is
effected than heretofore, and the leather produced is softer and of better quality.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said William Lawies Jackson in the Great Seal Patent Office on the
26th October 1876.
WILLIAM LAWIES JACKSON, of Leeds, in the County of York. "A NEW OR
IMPROVED MEANS AND APPARATUS EMPLOYED IN THE TREATMENT OF LEATHER
DURING AND AFTER THE STUFFING OPERATION."
"
In the stuffing operation, known as "Inill" or "drum' stuffing, I use the
ordinary receiver for the leather, and over or so connected with this receiver I
mount a tank in which is placed the dubbing or stuffing material.
A communication is made between the receiver and tank by means of tubes
through which the dubbing or stuffing is conveyed into the receiver, and in order
to give additional heat to the dubbing or stuffing as it passes into the receiver, so
that it can be better received by the leather, steam is injected into the tubes
at any convenient place. The other parts of the machine are of ordinary con-
struction.
»
After the leather has gone through the operation of stuffing by the process
known as "mill or "drum" stuffing, it is at present taken therefrom and allowed
to cool gradually, or is allowed to revolve in the drum or cylinder with the door
open; the result is that the "stuffing" or dubbing being in a liquid state oozes out
during the "slicking" or "sleaking" process following, and a large quantity of the
'stuffing" is wasted.
"
Now in order to facilitate the carrying on of the next. process, immediately I
remove the "stuffed" material or leather from the apparatus in which it is
"stuffed" and place it in another receptacle closed or open and made to revolve,
and I blow in upon it cold air by means of a fan "blower" or other known means,
or blow cold air into the same receptacle in which the leather has been "stuffed;"
this has the effect of causing the stuffing or dubbing in the leather to congeal, set,
or chill; icc or other cooling material may be used in this process. By this
operation the cooling process is much accelerated, the dubbing is fixed in the
leather more uniformly, a great saving of "stuffing" or "dubbing" and of time
is effected than heretofore, and the leather produced is softer and of better quality.
And in order that my Invention may be more completely understood, reference
is given to the accompanying two Sheets of Drawings and to the letters and marks
thereon.
DESCRIPTION OF DRAWINGS.
Sheet 1 represents the apparatus for the stuffing operation in which Figure 1 is
a front elevation; Figure 2, a side elevation; and Figure 3, a plan looking at
the top.
a is a framework between which is mounted in suitable bearings a receiver or
drum b (which is of ordinary construction), in which the material is placed for the
stuffing operation; in connection with this I employ the dubbing tank d, from
which acommunication is made with the interior of the drum b by means of the pipe or
tube e, through which the dubbing or stuffing passes thereto. To give an additional
heat to the dubbing or stuffing as it passes into the receiver or drum b I inject
steam along with the dubbing into the drum or receiver through pipe or tube g
to which the tube or pipe e may be attached at h, as shewn. The steam may be
abtained from
1
1
Sheet 1 represents the apparatus for the stuffing operation in which Figure 1 is
a front elevation; Figure 2, a side elevation; and Figure 3, a plan looking at
the top.
a is a framework between which is mounted in suitable bearings a receiver or
drun b (which is of ordinary construction), in which the material is placed for the
stuffing operation; in connection with this I employ the dubbing tank d, from
which acommunication is made with the interior of the drum 6 by means of the pipe or
tube e, through which the dubbing or stuffing passes thereto. To give an additional
heat to the dubbing or stuffing as it passes into the receiver or drum b I inject
steam along with the dubbing into the drum or receiver through pipe or tube g
to which the tube or pipe e may be attached at h, as shewn. The steam may be
obtained from any convenient generator. The other parts of the machine are of
ordinary construction.

page_text: "
""
After the leather has gone through the process known as "mill." or "drum
stuffing," it is at present taken therefrom and allowed to cool gradually, or is allowed
to revolve in the drum or cylinder with the door open; the result is that the stuffing
or dubbing being in a liquid state oozes out during the slicking or sleaking operation
following, and a large quantity of the stuffing is wasted.
Now in order to facilitate the carrying on of the next process I immediately
remove the material from the apparatus in which it has been stuffed, and place it
in another receptacle, which is shewn on Sheet 2, in which Figure 1 is a front
elevation; Figure 2, a side elevation; and Figure 3, a part plan looking at the top.
The drum a and framework b arc of a similar construction to that shewn on
Sheet 1, and mounted in a similar manner, all of which are of ordinary construction.
The sides of the drum a or the doors c may be perforated or made of an open con-
struction. When the drum a is in motion with the material inside I blow cold air
thereinto through the pipe or tube d; this has the effect of causing the dubbing in
the leather or stuffing to congeal, set, or chill. The blast may be obtained from any
suitable blowing apparatus to which the pipe or tube d is connected, and conveyed
into the interior of the drum a, by preference, through the axle of the drum or
cylinder a, as shewn at c.
Ice or other cooling material may be used to render the blast as cool as possible.
The other parts of the machine are of ordinary construction.
Motion is imparted to both machines through suitable gearing in the ordinary
manner.
By this arrangement the cooling process is much accelerated, the dubbing is fixed
in the leather more uniformly, a great saving of "stuffing" or "dubbing" and of
time is effected than heretofore, and the leather produced is softer and of better
quality.
I would here remark that when preferred both the stuffing operation and the
cooling operation may be performed in the same machine by having both the steam
and cold air arrangements attached thereto.
Having now described the nature of my said Invention, and shewn by Drawings
how the same may be carried into practice, I would have it understood that I do
not limit myself to the precise limits, details, or configuration of the various parts
I have explained and shewn, as the same may of course be varied or modified
without in any way departing from my Invention; but what I do claim and desire
to be secured to me by Letters Patent is,-
First. The means or apparatus employed for injecting steam into the interior of
the drum in combination with the dubbing in order to give additional heat to the
same, as shewn on Sheet 1, substantially as and for purposes herein set forth.
Second. The means or apparatus employed for injecting cold air into the interior
of the drum, as shewn on Sheet 2, for cooling the hide after being stuffed, substan-
tially as and for purposes herein set forth.
In witness whereof, I, the said William Lawies Jackson, have hereunto set my
hand and scal, this Twenty-fourth day of October, in the year of our Lord
One thousand eight hundred and seventy-six.
W. L. JACKSON. (L.S.)