IMPROVEMENTS IN APPARATUS. USED IN PRINTING FELT CARPETS AND OTHER SIMILAR FABRICS
Year: 1878

page_text: LETTERS PATENT to Robert John Chadwick Mitchell, of Waterfoot, in the
County of Lancaster, for the Invention of "IMPROVEMENTS IN APPARATUS.
USED IN PRINTING FELT CARPETS AND OTHER SIMILAR FABRICS."
Sealed the 1st November 1878, and dated the 31st August 1878.
PROVISIONAL SPECIFICATION left by the said Robert John Chadwick
Mitchell at the Office of the Commissioners of Patents on the 31st August
1878.
ROBERT JOHN CHADWICK MITCHELL, of Waterfoot, in the County of Lancaster.
"IMPROVEMENTS IN APPARATUS USED IN PRINTING FELT CARPETS AND OTHER
SIMILAR FABRICS."
This Invention relates to the operation called " 'tiering," which is the spreading
of the color evenly on the sieve for the printer to charge his block previously to
printing.
This operation has heretofore been performed by means of brushes worked by
band, and the object of this Invention is to render this operation self-acting, and
thus dispense with the services of the boys usually employed for that purpose.
The sieve is constructed as follows:-A shallow box is prepared, having a wooden
bottom with a door or lid, and the top is covered with oil baize, made water-tight
by being tacked or nailed firmly all round the edges of the box. This box being
placed on a table reversed (that is, with the sieve downwards) is filled with the
usual thick liquid called " swimmings," and the door or lid being then closed
liquid-tight it is turned sieve upwards and placed on the carriage. A roller is
mounted on each side of the box, the diameter of the rollers being about equal to
[Price 6d]

page_text: the depth of the box, so that an endless cloth or flannel being extended round the
rollers will pass closely above and below the box.
Beneath one of the rollers (and in contact therewith) is mounted a furnishing
roller, which dips into a color trough, and furnishes the color to the endless cloth
or flannel, a doctor (or doctors) being provided to make the layer of color even.
The rollers are connected by an endless chain or belt to the wheels of the
carriage (or to the axle thereof) in such a way that as the carriage is moved along
the rollers revolve, and thus a fresh and even surface of color is constantly furnished
to that part of the cloth or flannel above the sieve for the printer to charge his
block with.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by:
the said Robert John Chadwick Mitchell in the Great Seal Patent Office on
the 28th February 1879.
ROBERT JOHN CHADWICK MITCHELL, of Waterfoot, in the County of Lancaster."
"IMPROVEMENTS IN APPARATUS USED IN PRINTING FELT CARPETS AND OTHER
SIMILAR FABRICS."
'
This Invention relates to the operation called "tiering," which is the spreading
of the color evenly on the sieve for the printer to charge his block previously to
printing.
This operation has heretofore been performed by means of brushes worked by
hand, and the object of this Invention is to render this operation self-acting, and
thus dispense with the services of the boys usually employed for that purpose.
Such being the nature and object of my said Invention I will now proceed to
describe in detail the manner in which the same is to be or may be performed or
carried into practical effect, and in order that the same may be clearly understood
I have annexed hereunto a Sheet of Drawings, and have marked the same
with figures and letters of reference corresponding with those in the following
explanation thereof.
Fig. 1 in the annexed Drawing is a side elevation, Fig. 2 a plan view, and
Fig. 3 a vertical section of my "tiering" apparatus.
The sieve consists of a shallow box a, a, on opposite sides of which are formed
slots or channels b, b, through which the usual thick liquid or "swimming" is
poured into the box, the top of which is covered with oil baize c, c. This sieve is
placed on a carriage or framing d, d, and at each end thereof is mounted a roller e, e',
so that an endless cloth or flannel f, f, being extended round the same will pass
closely above and below the box.
Beneath the roller e, e, and in contact therewith, is mounted the furnishing
roller g, g, which dips into the color trough h, h, and furnishes the color to the
endless cloth or flannel f, f. The doctor i, i, is adjusted to make the layer of color
even and of any desired thickness, and the doctor k, k, in the color trough clears off
the old color from the cloth or flannel as it passes to the furnishing rollers to receive
a fresh supply.
The roller e, e, is connected by an endless chain or belt, or preferably (as illus-
trated in the Drawings) by the gearing 1, 11, 12, 13, to the axle on the carriage, so
that as the carriage is pushed along the roller e, e, revolves and causes the
furnishing roller g, g, to revolve by means of the gearing m, m, and thus a fresh
and even surface of color is constantly furnished to that part of the cloth or flannel
above the sieve.
It is evident that as the printer presses his block on to the flannel the oil baize
cover gives way to the pressure, and the "swimmings" rise up the channel b, b,
thus a more perfectly yielding surface than has heretofore been obtained is pre-
sented to the block.
To prevent the friction of the band f, f, in passing over the oil baize cover c, c, a
small roller m, n, is mounted in a slotted bearing behind the roller e, e, and the
roller e, e¹, is also mounted in a slotted bearing. As the printer pushes the
carriage forward by means of the board o, o, the lever p, p, lifts the roller e, e, and
the connecting rod g, g, causes the lever r,, to lift the small roller n, n, and thus
as the carriage is being pushed along the band f, f, cannot touch the "sieve," but
can travel freely on the rollers.
By means of the catch wheel 1, indicated in Fig. 1, on the axle of the front
wheel, the toothed wheel only revolves when the carriage is moved forwards.
Instead of making the "sieve" as above described it may be made (as seen at
Figs. 4 and 5) in the following manner :—A shallow box 8, 8, has a door or lid t, t,

page_text: at the bottom, and the top is covered with oil baize u, u, made water-tight by being
tacked or otherwise fixed firmly all round the edges of the box. The box being
reversed (i.e., with the sieve u, u, downwards) is filled with the swimmings,"
and the door or lidt being closed liquid-tight it is turned sieve upwards and placed
on the carriage.
Having now described the nature and object of my said Invention', together with
the manner in which the same is to be or may be performed or carried into practical
effect, I wish it to be understood that I claim as my Invention, the general con-
struction and arrangement of the mechanical "tiering" apparatus, substantially as
described, and illustrated by the Drawings annexed.
In witness whereof, I, the said Robert John Chadwick Mitchell, bave here-,
unto set my hand and seal, this Twenty-seventh day of February, in the
year of our Lord One thousand eight hundred and seventy-nine.
i