Improvements in Loom Shedding Motions.
Year: 1891

page_text: Date of Application, 26th Oct., 1891
Complete Specification Left, 26th Aug., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Loom Shedding Motions.
I, WILLIAM JOHN THOMPSON, of 2 Ivy Cottages, Bread Street Connswater,
Belfast, in the Province of Ulster, Ireland, Factory Manager, do hereby declare
the nature of this invention to be as follows:-
This invention relates to improvements in looms for weaving, whereby four
different patterns can be worked with one build of tappet, and the pattern of the
material changed instantly at the will of the weaver.
The invention consists of an arrangement of mechanism which may be applied to
looms at present in use, or may be applied to looms hereafter to be made. The
aforesaid mechanism consists of a number of pulleys of suitable patterns or shapes,
the spindles of which are secured to hexagonal star flanges, on the ends of a central
roller on which, the pulleys revolve. The central roller slides on a feather on a
shaft, so that the position of the roller and the pulleys can be shifted endways on
the shaft as desired by means of an ordinary forked lever. On the end of the
shaft is a toothed wheel gearing with a pinion, from which the rotation of the
roller flanges and pulleys is derived.
Arranged above and in contact with the pulleys are a series of double levers
joined by a link. These levers are directly connected to the healds or heddles for
alternately raising and lowering each part of the warp.
To change the pattern of the material, the central roller with its flange and the
pulleys is shifted along the shaft so as to bring different pulleys under the
overhanging levers.
Dated this 26th day of October 1891
CASTLE SMITH,
<
Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Loom Shedding Motions.
I, WILLIAM JOHN THOMPSON, of 2 Ivy Cottages, Bread Street, Connswater,
Belfast, in the Province of Ulster, Ireland, Factory Manager, 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 improvements in looms for weaving whereby a number
of different patterns, such as for instance, plain cloth, twills, diaper, huckaback, &c.,
can be worked with the same build of tappet and the pattern and the material
changed instantly at the will of the weaver.
And in order that this invention may be more fully understood and carried into
practice, I append hereunto two sheets of drawings illustrative of a portion of a
loom constructed according to this invention which may be applied to looms at
present in use, or those to be made hereafter.
Figure 1 is a side elevation, and Figure 2 an end elevation of such apparatus.
As shewn in the drawings this mechanism consists of a number of pulleys a, the
spindles b of which are secured to the links of a chain passing over hexagonal star
flanges c on the ends of a central roller d around which the pulleys a revolve, the
centre roller d slides on the feather on the shaft ; so that the position of the
roller d and the pulleys a can be shifted end ways on the said shaft as desired by
means of an ordinary forked lever f. On the end of the shaft j is a tooth wheel g
Paine R71

page_text: gearing with the pinion from which the rotation of the roller flanges and pulleys is
derived.
Arranged above and in contact with the pulleys are a series of double levers h
jointed by a link. These levers are directly connected to the healds or heddles
for alternately raising and lowering each part of the warp.
To change the pattern of the material the centre roller d with its flanges and
the pulleys a is shifted along the shaft j so as to bring different pulleys a under the
overhanging levers h.
Among the advantages to be derived from the use of this invention may be
mentioned the following:-
:-
(1.) It requires less power to drive than any treading motions adopted to looms.
(2.) In cloth where changes of weave are required, the change is effected almost
instantaneously without the operator having to remove from before the loom.
(3.) Owing to the shape and form of the tappet it can be adopted to any size
of loom.
(4.) The driving pinion and wheel do not require to be changed for different
weaves of cloth, so that there are only two wheels in use, thereby saving time when
changing patterns.
(5.) The heddles are more easily got into position when starting the loom, thereby
effecting a great saving of time.
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 :-
The hereinbefore described improvements in loom shedding motions, substantially
as and for the purpose set forth and described and illustrated in the accompanying
drawings.
Dated this
1
1000
ZŁUKUOD
CASTLE SMITH,
"Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.