IMPROVEMENTS IN THE CONSTRUCTION OF LOOMS FOR WEAVING
Year: 1883

page_text: LETTERS PATENT to Richard Scott Collinge and Robert Collinge. both of
Oldham in the County of Lancaster for an Invention of "IMPROVEMENTS
IN THE CONSTRUCTION OF LOOMS FOR WEAVING"
PROVISIONAL SPECIFICATION left by the said Richard Scott Collinge and
Robert Collinge at the Office of the Commissioners of Patents on the
18th June 1883.
RICHARD SCOTT COLLINGE and ROBERT COLLINGE both of Oldham in the
County of Lancaster "IMPROVEMENTS IN THE CONSTRUCTION OF LOOMS FOR
WEAVING
"
This invention relates to the "shedding motion" employed in looms for weaving
and consists of certain improvements upon an invention for which Letters Patent
bearing date the 1 February A.D. 1882 N° 492 were granted to Richard Scott
Collinge (one of the present Petitioners) and Edward Collinge, the objects of the
present invention being to work the apparatus in a more direct and economical
manner and to obtain a "dwell" whilst the "shed" is open so that the shuttle
may pass clear across the loom whilst the warp threads are at rest.
"
In the first place we turn the " dobby or "shedding motion" one quarter
round so that the double catch levers k, k (mentioned in the Specification of the
Letters Patent above referred to) are at the top of the machine: we dispense with
the horizontal bars q, q weighted levers 7. r. and the cams a, a, working in the
open slotted levers w. w¹ and we allow the lattice or pattern chain to act directly
upon the double catch levers.
On the end of the crank shaft we key or otherwise fix a stud plate working in
gear with a star wheel on the end of the lattice roller, and thus we actuate the
double catch levers in a direct manner.
In order to cause a "dwell" whilst the shed is full open so as to allow the
shuttle to pass clear across the loom we also fix on the crank shaft outside the stud
plate above named a double acting cam working inside an open slot or clip forming

page_text: part of an arm which works to and fro on a fulcrum or pin below, and is connected
at its upper end with the lever which works the knives. This double acting cam
is so formed that one part acts for opening the knives and another part for closing
the same, and there is a portion between the two where there is no action whatever
so that by these means the "shed" is always held open and the healds are not in
motion during the whole of the time that the shuttle passes from one box to the
other through the warp threads.
This is a most important part of our invention as it lessens the strain upon both
the healds and the warp threads and prevents the liability of the shuttle from
breaking the warp threads and flying out of the “shed."

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Richard Scott Collinge and Robert Collinge in the Great Seal
Patent Office on the 13th December 1888.
RICHARD SCOTT COLLINGE and ROBERT COLLINGE both of Oldham in the
County of Lancaster "IMPROVEMENTS IN THE CONSTRUCTION OF LOOMS FOR
WEAVING"
This invention relates to the "shedding motion" employed in looms for weaving
and consists of certain improvements upon an invention for which Letters Patent
bearing date the first day of February À.D. 1882. N° 492. were granted to Richard
Scott Collinge (one of the present
) and Edward Collinge, the objects of
the present invention being to work the apparatus in a more direct and economical
manner and to obtain a "dwell" whilst the "shed" is open so that the shuttle
may pass clear across the loom whilst the warp threads are at rest.
Such being the nature and object of our said invention we 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
we have annexed hereunto a sheet of drawings illustrative thereof 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 represents the end frame of a loom with our
improved shedding motion" (drawn in section) shown as applied thereto.
In the first place we turn the "dobby" or shedding motion" one quarter
round so that the double catch levers k, k¹ (mentioned in the Specification of the
Letters Patent above referred to) are at the top of the machine: we dispense with
the horizontal bars q, q weighted levers r, r and the cams x, x, working in the
open slotted levers w¹, w¹ and we allow the lattice or pattern chain g, g to act
directly upon the double catch levers k, k¹.
On the end of the crank shaft e, e we key or otherwise fix a stud plate, working
in gear with a star wheel h, h on the end of the lattice roller, and thus we actuate
the double catch levers k, k in a direct manner.
13
In order to cause a "dwell
whilst the shed is full open so as to allow the
shuttle to pass clear across the loom we also fix on the crank-shaft outside the
stud plate above named a double acting cam i, i see Fig 2. working inside an open
alot or elipa, forming part of a sliding rod t, t or an arm which works to and fro
on a fulcrum or pin below and is connected at its upper with the lever t¹, t¹ which
works the knives o and p. This double acting cam i, i is so formed that one part
1. 1. acts for opening the knives o and p and another part 2.2 for closing the
same; and there is a portion 3. 3, between the two where there is no action
whatever so that by these means the "shed" is always held open and the healds
are not in motion during the whole of the time that the shuttle passes from one
box to the other through the warp threads. (1, (1 are rollers mounted in the slot
or clip a, a to reduce friction.
Instead of using a cam i, i working in an open slot or clip x, x as shown at
Fig. 2. we sometimes prefer to use a grooved face cam as shown at u, u in Fig 3.
in the groove of which works a bowl v carried by the sliding rod t, t.
The lever t, t¹ which works the knives o, and p, and to the upper end of which
the sliding rod t, t is attached, we prefer to make in two pieces (as shown at Figs 2
and 3) one piece being provided with a pin and lock nut, and the other with a
slot, whereby the "shed can be adjusted and regulated to any required degree.
This arrangement for obtaining the "dwell" and for regulating the "shed"
"

page_text: forms a most important feature of our invention, as it lessens the strain upon the
healds and the warp threads and prevents the liability of the shuttle to break the
warp and fly out of the "shed."
Having now described the nature and object of our said invention together
with the manner in which the same is to be or may be performed or carried into
practical effect we wish it to be understood that we do not claim merely bending
ordinary treadle levers of such or similar "shedding motion" at right angles so
that the double catch levers come to the top and the pattern chain acts directly
on the said double catch levers; but we do claim the same when combined with
the particular arrangement of shedding motion described in the specification of
our Letters Patent of 1882 before referred to; the treadle levers being provided
with springs m, m and stops n, n and the knives being carried by separate levers
8, 8 working on two studs one placed on each of the treadle stud: and we claim
Secondly the construction and application thereto of the cam formed with a
"dwell so as to lessen the strain upon the healds and warp threads, substantially
as described.
In witness whereof we the said Richard Scott Collinge and Robert Collinge
have hereunto set our hands and seals this eleventh day of December in the
year of our Lord One thousand eight hundred and eighty three.