IMPROVEMENTS IN MACHINERY AND APPARATUS APPLICABLE TO FOLDING, DOUBLING, AND TWISTING MACHINES."
Year: 1880

page_text: LETTERS PATENT to Thomas Coltman, of Leicester, in the County of Leicester,
for an Invention of "IMPROVEMENTS IN MACHINERY AND APPARATUS
APPLICABLE TO FOLDING, DOUBLING, AND TWISTING MACHINES."
"
PROVISIONAL SPECIFICATION. left by the said Thomas Coltman at the
Office of the Commissioners of Patonts on the 1st March 1880.
THOMAS COLTMAN, of Leicester, in tho County of Leicester.
"IMPROVEMENTS
IN MACHINERY AND APPARATUS APPLICABLE TO FOLDING, DOUBLING, AND TWISTING
MACHINES."
These improvements consist in employing portions of the apparatus severally
described in the Specifications of two former Patonts granted to me, the first
numbered 842, dated March 3rd, 1879, for improvements in machinery and
apparatus applicable to spinning frames to prevent waste and double yarn, the
second, numbered 1749, dated May 3rd, 1879, for improvements in machinery and
apparatus applicable to any machines, engines, shafts, or series of shafts which
require the whole or part thereof to be suddenly stopped. Each single thread
employed in a folding, doubling, or twisting machine is passed through a guide hole
in a ballanced weighted lever which rocks on an axle pin carried by a suitable
bracket attached to the machine, there being one such bracket to each series of
threads in the machine; the lower end of the weighted lever, when the thread
breaks, strikes the upper end of a catch lever which rocks on an axle, also carried
by the bracket abovo named, and liberates one end of a three ended lever which
rocks on an axle secured to or carried by the machine framing; the two outer ends
of this lever immediately engage with the teeth of two ratchet wheels, which are
fully described in the Specifications of the two Patents above referred to; the front
end of the last mentioned lever stops tho roller over or under which the threads
pass when being folded, doubled, or twisted; the back end of the lever stops the
driving pulley which communicates motion. to the folding, doubling, or twisting
spindle, or other instrument employed for those purposes, thereby effectually
preventing the waste heretofore made.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, and of
an Order of the Lord Chancellor, filed by the said Thomas Coltman in the
Great Seal Patent Office on the 11th September 1880.
THOMAS COLTMAN, of Leicester, in the County of Leicester. "IMPROVEMENTS
IN MACHINERY AND APPARATUS APPLICABLE TO FOLDING, DOUBLING, AND TWISTING
MACHINES."
These improvements consist in employing portions of the apparatus severally
described in the Specifications of two former Patents granted to me, the first
numbered 842, dated March 3rd, 1879, for improvements in machinery and
apparatus applicablo to spinning frames to provent waste and double yarn, the
second, numbered 1749, dated 3rd May, 1879, for improvements in machinery and
apparatus applicable to any machines, engines, shafts, or series of shafts which
require the whole or part thereof to be suddenly stopped. Each single thread
employed in a folding, doubling, or twisting machine is passed through a guide holo
in a balance weighted lever which rocks on an axle pin carried by a suitable bracket
attached to the machine, there being one such bracket to each series of threads in
the machine; the lower end of the weighted lover, when the thread breaks, strikes
the upper end of a catch lever which rocks on an axle, also carried by the bracket
above named, and liberates one end of a three ended lever which rocks on an axle
secured to or carried by the machine framing; the two outer ends of this lever
iminediately engage with the teeth of two ratchet wheels, which are fully described
in the Specifications of the two Patents above referred to; the front end of the
last mentioned lever stops the roller over or under which the threads pass when
being folded, doubled, or twisted; the back end of the lever stops the driving pulley
which communicates motion to the folding, doubling, or twisting spindle, or other
instrument employed for those purposes, thereby effectually preventing the waste
heretofore made.

page_text: movements are effected by the following means:-Each single thread employed in
a folding, doubling, or twisting machine is passed through a guide hole in a balanced
weighted lever A which rocks on an axle pin carried by a bracket B, each bracket
being secured to an angle bar B' attached to the machine framing, there being one such
bracket to each series of threads in the machine. The lower end of either of the
weighted levers, when its thread breaks, strikes the upper end of a catch lever B²
which rocks on an axle carried by the lower end of the bracket above named, and
liberates the ends of a three ended lever C which rocks on an axle in a bracket C¹
secured to a cross bar C³ carried by the machine framing; a stud on the front outer
end C³ of the lever immediately engages with one of the teeth of a ratchet whicel D.
Near the right end of the lower front roller D, Figure 5, the ratchet is provided
interiorly with inclines, a left side view of which is shown at Figure 8; the inside
is also provided with a stud D which takes into a recess D° formed near the end
of a boss D' at the right end of the lower front roller D, also, carrying inclines (an
end view of which is shewn at Figure 6, and a side view at Figure 9 shews the
recess). Between the ratchet wheel and the left end of the next lower front
roller D, to the right, is a collar D³ which is secured to and revolves with the axle
of the lower front rollers. This collar has a circular groove in the centre of its
length to receive a circular spring, which presses upon a driving pin D which lies
in a groove cut in the direction of the length of the collar; the left end of the
driving pin projects beyond the collar and takes into recesses formed in the right
end of the boss D'. An end view of the collar spring and driving pin is shewn at
Figure 7, and a sectional view of the same and the ratchet wheel at Figure 5.
When the stud on the outer end Cs of the lever C engages with one of the teeth
of the ratchet wheel the stud D³ slides in the recess D in the boss D'; the incliues
in the wheel and boss will then occupy such a position relative to each other that
the driving pin D¹ will ride over both sets of inclines, during which the front lower
roller D will remain stationary, but the collar D³ and driving shaft will continue
freely to revolve. An enlarged sectional view of a balanced weighted lever A,
bracket B, angle bar B', and catch lever B³ is shewn at Figure 3, and a front view
of one bracket and a series of four woighted levers are shewn at Figure 4, in the
relative positions they occupy when the threads to be doubled are holding the
weighted levers clear of the catch lever. At Figures 1 and 3 a rod B' is shewn in
section carried by brackets on the framing; this rod keeps the threads in position
to hold A clear of the catch lever B².
When the stud on the outer end of the lever c engages with either of tho teeth
of the ratchet wheel D the back lower end C of the lover at the same time engages
in one of the teeth on a plate carried by the driving shaft E and checks the
revolution of the driving pulley E' by the following apparatus at the back of each
spindle-To the right of the driving pulley is a plate secured on the driving shaft,
and having a boss of sufficient length to reach the boss on the left side of the next
adjacent pulley; this plate is slotted and recessed, and is provided with a bolt F
forced outwards by a coiled spring and two lugs F1, which keep it in position in a
plate E provided with teeth on its circumference and with inclines interiorly. The
plate E' is of sufficient thickness to lie within the plates E and part of plate E,
which is also provided interiorly with inclines. The bolt F in the plate E' is
rounded for half its thickness to the left on the right side, and square the other
half on the left side, such form enabling it to slide over the inclines in plate E, but
will strike against one of the teeth in the right side of the plate E and carry it
round with the shaft, except at such time as the end C of the lover C is engaged
in one of the teeth on the plate E²; at such time the inclines of the plate E and
the teeth of the plate E3 will form a continuous run for the bolt F, and the driving
shaft will continue to revolve without moving the plates E and E³. The left side
of the plate E is recessed and provided with a driving bolt E projected by a
coiled spring; the bolt striking against either of the teeth in a plate E³, which is

page_text: rivetted to the driving pulley E', will cause the pulley to revolve with the driving
shaft when the back end of the lever C is clear of the plate E². The projection
from the circumference of plate E³ slides between two stops G, G, on the left side of
the plate E² to prevent the inclines sliding further than to form a continuous run
for the bolt to ride over. By means of the apparatus above described the driving
pulley will come to rest without shock as its weight overcomes its impetus upon
plate E being stopped by the end of the lever C. Figures 11, 13, 15, and 17, show
the right sides of the plates E¹, E², E³, and Eª; Figures 12, 14, and 16, the left sides
of the plates E¹, E, and E³, and Figure 10 a front view of the driving pulley and
plates in combination.
My second modification consists in employing the same means as described in the
first modification for stopping the revolution of the bottom front roller to cach
spindle upon the breaking of either thread, but I employ the following apparatus
to stop the spindle without stopping the driving shaft or driving pulley; this I
effect as follows:-Instead of forming the lever C with a back end C I form it
with a front end C of the shape shewn in section at Figure 18. This end lies
between two studs in the back end of a rocking lever C carried by an axle pin
in a bracket secured to one of the front bearing rails of the machine. The front
end of the lever C, when the lever C is held by the catch lever Bª clears a tooth
or catch C7 on the top side of a disc, shewn in plan at Figure 20. This disc has an
inclined slot Cs in which a pin is drawn towards the centre; this pin also passes
through a radial slot in a disc shewn at Figure 21 having a boss on its top side by
which it is secured to the spindle. The underside of this disc is recessed and carries
a driving bolt C, shewn at Figure 22, from which the pin above named projects.
Below the second disc is a third carrying a fixed stud Co on its top side, shewn at
Figure 23. This disc is rivetted to the pulley on the spindle which revolves on a
collar below it, forming part of the spindle. The three discs, pulley, and spindle
revolve freely, being operated by a band from the driving pulley secured to the
driving shaft in the usual way, while the front end of the rocking lever C is held
clear of the catch C7 by the catch lever B before described, but upon the breaking
of a thread the front end of the lever C engages with the catch C7 on the top
disc; the bolt C will thus be drawn towards the centre of the spindle clear of the
stud Co, thereby stopping the revolution of the spindle, but allowing the third disc
and pulley to revolve freely. An enlarged view of the three discs, pulley, collar,
and portion of a spindle is shewn at Figure 19.
The third modification is shewn in a sectional side view at Figure 24, and an
enlarged view of a disc pulley and part of a spindle at Figure 25. A disc provided
with a catch C is secured to the fixed pulley on the spindle, which revolves freely
while clear of the front end of the lever C6, being driven by a band from the
driving pulley E secured on the driving shaft, the revolution of the spindle being
forcibly stopped upon the breaking of a thread by the front end of the rocking
lever engaging with the catch C.
Having now described the nature of my said Invention, and in what manner
the same may be performed, I declare that I claim,-
First. The construction and employment of a series of thread guiding balanced
weighted levers, each of which upon the thread it guides breaking, releases a catchi
lever which holds two ends of a three ended lever clear of the teeth of two incline
wheels or plates, but upon the thread breaking, the two ends of the iever stops the
said wheels without stopping the driving shaft, as described in the first modification.
Second. The construction and employment of a series of thread guiding balanced
weighted levers acting as described in the first modification, a catch lever, and three
ended lever and rocking lever operating, in conjunction with a series of discs, a
spindle upon the breaking of a thread, as described in the second inodilication.
Third. The construction and employment of a disc attached to the pulley of a

page_text: 5
twisting spindle stopped by one end of a rocking lover actuated as described in the
third modification.
In witness whereof, I, the said Thomas Coltman, have hereunto set my hand
and seal, this Twenty-seventh day of August, in the year of our Lord One
thousand eight hundred and eighty.
Witness,
H. W. GOUGH, C.E.,
Nottingham.
THOMAS COLTMAN. (L.s.)