IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1861

page_text: LETTERS PATENT to Thomas Hindle, of Blackburn, in the County of
Lancaster, Spinner and Manufacturer, for the Invention of "IMPROVEMENTS
IN LOOMS FOR WEAVING."
Sealed the 5th September 1861, and dated the 22nd March 1861.
PROVISIONAL SPECIFICATION left by the said Thomas Hindle at the
Office of the Commissioners of Patents, with his Petition, on the 22nd
March 1861.
I, THOMAS HINDLE, of Blackburn, in the County of Lancaster, Spinner
and Manufacturer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN LOOMS FOR WEAVING," to be as follows:-
This Invention relates to what is technically called the "clutch tappet," and
consists of placing a cam on the tappet shaft, working a catch with a parallel
motion which works a rack fixed to a plate in order to receive the segments
for producing a variety of patterns.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Hindle in the Great Seal Patent Office on the
20th September 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
HINDLE, of Blackburn, in the County of Lancaster, Spinner and Manufacturer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of March, in the year of our Lord
One thousand eight hundred and sixty-one, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Thomas Hindle, Her special licence that I, the said Thomas Hindle, my
executors, administrators, and assigns, or such others as I, the said Thomas
Hindle, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN LOOMS FOR
WEAVING," upon the condition (amongst others) that I, the said Thomas
Hindle, my executors or administrators, by an instrument in writing under
my, or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great Seal
Patent Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said Thomas Hindle, do hereby declare the
nature of my said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
(that is to say):-
=:
This Invention relates to what is technically called the "clutch tappet," and
consists in placing on the tappet shaft a cam which works a ratchet in a
parallel direction by means of guides. The ratchet acts upon a ratchet
wheel connected to a plate, having fixed to it a number of segments of any
desired width which operate upon the clutch by means of a lever, and thereby
enable any given number of picks to be thrown in each shed.
These improvements will be clearly understood by referring to the figures
and letters on the accompanying Sheet of Drawings, in which Fig. 1 is a
front elevation, and Fig. 2 a plan of part of a loom having my improvements
attached; Fig. 3 is an end elevation of the same with one of the end

page_text: frames removed in order to shew the interior; Fig. 4 is a detached section
of the plate which carries the pattern segments and also the parts on which
the plate revolves, and Figs. 5, 6, and 7 are detached views of various
segments.
a is the tappet shaft of the loom; b, the tappets; c, the clutch; d, e, the
clutch lever; f, the pin or fulcrum on which the lever works; 9, the pattern
segments; and h, the plate to which they are fixed. The clutch c turns with
the shaft a by means of a feather or key in the usual manner, and the
sizes and positions of the pattern segments are varied according to the
desired pattern of the fabric. The plate h to which the segments are fixed
is circular; it revolves on the stud i, and bears upon the surface j of leather
or other suitable material for the purpose of obtaining friction and preventing
the plate from overrunning itself. The said friction surface is fastened-to
the flange k, fixed upon the stud i, which is bolted to the small frame 1.
On the under surface of the plate his fixed the ratchet wheel m, in the'
teeth of which works the ratchet n jointed to the sliding frame o, and
kept up to its work by the spring p. In order to ensure the revolution
of the ratchet wheel and plate there is a catch and spring q acting in the
usual manner. The frame o, to which the ratchet n is jointed, carries the
bowl r, which is kept in contact by the action of the spring s, with the
double cam or tappet t formed with the necessary dwells. As the cam t
revolves with the tappet shaft, the sliding frame o moves to and fro, and
with it the ratchet n, which acting upon the teeth of the ratchet wheel m
causes it to revolve, and thereby turn the plate h and pattern segments g,
which one after the other act upon the clutch lever and disengage the clutch
from the tappets b, which are then stationary as long as the segment is
pressing against the lever, and thus allows the required number of picks
to be delivered according to the pattern, there being a break u to maintain
the tappets steady. After each segment has passed the bowl of the lever,
the latter is pulled inwards by the spring and gears the clutch with the
tappets, which then move with the tappet shaft, and open the shed alternately.
The plate h may be made of any suitable size and strength, and placed in
any convenient position, and the teeth of the ratchet wheel may be of any
suitable pitch, and as many teeth operated upon as required, the cam being
arranged accordingly. Various sizes of pattern segments are shewn in
Figs. 5, 6, and 7, drawn to about half size, but as before stated they may
be varied to an indefinite extent. These improvements afford the means of
efficiently rendering the tappets stationary or revolving, and thereby obtaining
striped fabrics of any pattern required in the weft.

page_text: Having now described the nature and particulars of my said Invention,
and the manner in which the same is to be performed, I desire it to be
understood that I claim as my Invention, the improvements in looms for
weaving, as herein described and illustrated in the accompanying. Sheet of
.Drawings..
In witness whereof, I, the said Thomas Hindle, have hereunto set my
hand and seal, this Eighteenth day of September, in the year of our
Lord One thousand eight hundred and sixty-one.
Witness to the signature of the
. said Thomas Hindle,
CHARLES W. COLLINS,
17, Cross Street, Manchester.
THOMAS HINDLE. (L.S.)