A New Means or Method of Reversing the Rotary Motion of Looms.
Year: 1893

page_text: Date of Application, 11th Feb., 1893-Accepted, 11th Mar., 1893
COMPLETE SPECIFICATION.
[Communicated from abroad by GEORGE FRANK HUTCHINS, of Worcester,
Massachusetts, United States of America, Machine Maker.]
A New Means or Method of Reversing the Rotary Motion of Looms.
I, EDWARD HOLLINGWORTH of the firm of Hutchinson, Hollingworth, & Co.
Limited, of Dobcross Loom Works, Dobcross, in the County of York, Power
Loom Makers, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
My invention in looms consists in the use of a new form of mechanism to be
employed in connection with the driving and loose pulley for the purpose of
utilising the rotary motion of the loose pulley, so as to reverse the loom by power
and move the slay to its back position to permit the weaver to remove the shuttle
from the shed or for any
other purpose.
The apparatus is designed more particularly to be used on heavy looms, in which
considerable power is required to reverse the loom and move back the slay after
the loom is stopped, so that by the use of my improvements, the attendant,
generally a young girl or woman, can, by simply operating a lever, cause the loom
to be reversed by power, and the slay to move back and remain in its rear position.
My invention consists in certain novel features of construction and operation of
the supplemental mechanism, combined with the driving mechanism of a loom, for
the purpose above stated, as will be hereinafter fully described, and the nature
thereof indicated by the claims.
Referring to the drawings:-
Fig. 1 is an end view of a loom of ordinary construction, showing sufficient parts
of the driving mechanism to illustrate the nature of any supplemental mechanism
applied thereto.
Fig. 2 is a plan view on an enlarged scale of my supplemental mechanism
detached.
In the accompanying drawings, 1 is the right hand loom side, 2 the end shaft
supported in boxes 3 attached to the stand 4. 5 is a friction driving pulley loose
on the shaft 2, and provided with a friction face 5' and driven by a belt 6, in this
instance belted from above. 7 is a friction face pulley fast on the shaft 2, and
provided with a friction face 71 with which the driving pulley 5 is moved into or
out of contact, to start and stop the loom by the ordinary shipping mechanism or
these driving parts may be ordinary fast and loose pulleys.
A bevelled wheel 8 fast on the shaft 2 meshes with and drives a large bevelled
wheel 9 fast on the bottom shaft 10; and the bevelled wheel 9 meshes with and
drives a toothed wheel 11, fast on the crank shaft 12, all in the ordinary way.
The crank arm 13 connects the crank 12' of the crank shaft 12 with the slay 14,
which is pivoted at its lower end on a pin 15 in the lower part of the frame 1 in the
usual manner.
All of the above parts are of the usual construction and operation in looms of the
class represented in the drawings and forms no part of my invention.
will now proceed to describe my supplemental mechanism.
A lever 16 provided with a hub 16¹ is pivoted at the rear of the loom on a pin 17,
and extends upon the outside of the loom as shown in Fig. 1. One end 16 of said
lever extends to the front of the loom and is adapted in this instance to be engaged
by the foot of the attendant. The other end of the lever 16 is provided
with a shaped head or casting 18, in the upper ends of which, is pivoted a
Го

page_text: yoke 20, supported by and capable of rocking or oscillating on bolts or pins 19.
In said yoke 20 is supported the shaft or spindle 21, on which is fast a pulley 22
and a pinion 23.
The pinion 23 meshes with and drives a wheel 24 fast on a short-shaft 25
arranged parallel with the shaft 21 and also supported in the yoke 20. A pulley 26
is fast on the shaft 25, and provided with a covering of leather 26¹ or other
suitable material see Fig. 2.
1
The lever 16 is hung in such a position on the end of the loom that the pulley 22
will come under the driving pulley 5, and the pulley 26 will come under the
friction pulley 7. The yoke 20 will rock upon its pivots 19 and allow the
pulleys 22 and 26 to adjust themselves to the driving and friction pulley as
required.
A spring 27 is secured at one end to the lever 16, and at the other end to the
box 3 of the stand 4, or to any other fixed part of the loom frame, and serves
to keep the end 18 of the lever 16 in its lowest position as shown in Fig. 1.
The operation of the mechanism will be readily understood by those skilled in
the art of weaving.
When the loom is stopped the slay will usually be near the breast beam as shown
by full lines Fig. 1, and when it is desired to move back the slay for any purpose
into the position shown by dotted lines Fig. 1, the front end 16 of the lever 16
is depressed, causing the rear end of said lever to be raised, and bring the
pulley 22 into contact wth the travelling driving belt 6, or with the flange of the
driving pulley, or with the pulley itself in case it is belted from below, and
also bring the pulley 26 in contact with the friction pulley 7 fast on the shaft 2.
The revolution of the pulley 5 which runs loosely on the shaft 2 will cause the
pulley 22 to revolve, and through the wheels 23 and 24, the pulley 26 will transfer
the rotary motion thus obtained to the friction pulley 7, and will cause said pulley
to revolve, and with it also the shaft 2 on which said pulley is fast, thus
reversing the loom and moving back the slay into the position shown by dotted
lines Fig. 1.
The releasing of the lever 16 allows the spring 27 to act to disengage the pulleys 22
and 26 from the pulleys 5 and 7, and leave the slay in its backward position, BO
that the attendant may remove the shuttles from the shed or repair the warp
preparatory to restarting the loom in the ordinary way.
By using a small pinion 23 and a larger wheel 24, I reduce the motion of the
pulley 26, and prevent the too sudden reversing of the loom, and the too quick
return of the slay.
The advantages of my improvement will be readily appreciated by those
conversant with weaving.
My supplemental attachment is of very simple construction and operation, and
is adapted to be combined with looms of ordinary construction without any change
and requires but slight power to operate.
The details of the mechanism may be changed if desired; the lever 16 may be
adapted to be operated by hand instead of the foot if desired, and the pulley 22
may extend under and engage with the edge of the flange on the loose pulley 5,
instead of the belt, and thus prevent any damage or injury to the belt by the
friction of the pulley.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
Firstly In a loom, the combination with the loose and fast pulleys, of a
supplementary mechanism for reversing the loom by power to move back the slay,
the said mechanism consisting of a pivoted lever supporting a pivoted yoke
carrying a pulley adapted to engage with the belt pulley, and a second pulley
adapted to engage the friction or fast pulley, and intermediate gearing between
the pulleys supported in said yoke substantially as set forth.
1.

page_text: Secondly-In a loom, the combination with the fast and loose pulleys, of means
for conveying power from the belt or loose pulley to the friction or fast pulley to
reverse the loom by power and move back the slay, consisting of a lever pivoted at one
end of the loom, with its front end adapted to be engaged and operated from the front
of the loom, and its rear end adapted to extend under the belt pulley and friction
pulley, and provided with a pivoted yoke carrying two shafts, and a pulley mounted
on each of said shafts, and intervening gearing between the shafts for the purpose
stated, substantially as set forth.
Duted this 10th day of February 1893.
TASKER & CROSSLEY,
Huddersfield, Agents.