Improvements in Shedding Motions of Looms for Weaving.
Year: 1893

page_text: Date of Application, 17th May, 1893
Complete Specification Left, 17th Feb., 1894-Accepted, 17th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Shedding Motions of Looms for Weaving.
I, THOMAS HALLIDAY, of Golborne, near Newton-le-Willows, in the County
of Lancaster, Manufacturer, do hereby declare the nature of this invention to be
as follows:-
This invention relates to the shedding motion of under-pick or under-motion
looms, and is designed for working two additional shafts for the purpose of
producing spots or stitches in the weaving.
It consists essentially in a compound shedding motion constructed with an
additional loose tappet or cam on the tappet shaft caused to rotate about half the
number of times the ordinary tappets rotate or say preferably make one revolution
for every eight picks.
In carrying out the invention a spur or other gear wheel is placed to rotate
loosely on the tappet shaft and driven by a corresponding wheel on the second
motion shaft the wheels being proportioned to give the desired part of or number of
revolutions per pick. To this wheel are attached two tappets preferably in the
form of calico tappets which revolve loosely on it with the wheel to which they are
attached. The wheel on the second motion shaft is fastened thereon by key setscrew
or other device. The loose tappet preferably only revolves once every eight picks
whilst the other tappets revolve once every two, three or four picks. The additional
tappet can be geared either five, six or eight to the round, while the ordinary tappet
is going its usual round.
By this arrangement of compound tappet five or six shafts may be worked and
spots or stitches may be produced on the cloth.
Dated this 15th day of May 1893.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Shedding Motions of Looms for Weaving.
I, THOMAS HALLIDAY, of Golborne, near Newton-le-Willows, in the County
of Lancaster, Manufacturer, 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:-
This invention relates to the shedding motion of under-motion looms, and is
designed for working one or more additional shafts for the purpose of producing
spots or stitches in the weaving.
It consists essentially in a compound shedding motion constructed with an
additional loose tappet or cam on the tappet shaft caused to rotate about half the
number of times the ordinary tappets rotate or say preferably make one revolution
for every eight picks, but which may be altered as required by the employment of
gear wheels of different proportions.
The invention will be fully described with reference to the accompanying
drawings in which sufficient of the shedding motion of a loom is shown to illustrate
my invention.

page_text: Fig. 1, is a front elevation, and
Fig. 2, is a sectional side elevation on line -y Fig. 1, the levers or treadles D¹
being shewn in dotted lines.
In the drawings A is the tappet shaft, B the counter or second motion shaft,
and C the ordinary tappet or tappets operating or depressing the levers or
treadles D through the bowls E. The levers or treadles D will be connected to the
healds by the heald cords in the ordinary manner. The motion to operate the
ordinary tappet or tappets C is communicated from the second motion shaft B to
the tappet shaft A through the spur or other gear wheels F and G keyed or other-
wise secured to the said shafts. The tappet or tappets C are secured to their shaft
by setscrew c key or other device in order to rotate therewith.
On the tappet shaft A and capable of rotating loosely thereon I mount au
additional spur or other gear wheel H which is attached to or formed with a tappet
or double cam K preferably in the form of calico tappets which operates the levers
or treadles D' through the bowls El as in the case of the ordinary tappets.
The wheel H is driven by the spur wheel J secured to the second motion shaft
by setscrew or otherwise. The wheels are held in gear by means of a collar h
or other piece on the shaft at the outside of the gear wheel H. These wheels will
he proportioned in order to obtain the desired part of or number of revolutions
per pick.
The loose gear wheel H and with it the double cam K preferably only revolves
once every five, six, eight or ten picks whilst the other tappets revolve once every
two, three, four or five picks.
The additional tappet or double cam K can be geared either five, six, eight or ten
to the round, while the ordinary tappet is going its usual round.
By this arrangement of compound tappet five, six or seven shafts may be worked
and spots or stitches may be produced on the cloth.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
-
1. In a shedding motion for looms for weaving the combination with the
ordinary tappet or tappets of an additional tappet or double cam rotating loosely
on the tappet shaft operated by means of a spur or other gear wheel attached
thereto which gears with a spur or other gear wheel on the second motion shaft and
is driven thereby for the purpose of producing spots or stitches in the weaving
substantially as herein described and shown.
2. A shedding motion for looms for weaving having the several parts constructed
and arranged substantially as herein described and shown.
Dated this 16th day of February 1894.
W. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.