Improvements in the Shedding, Change-box, and Picking Motions of Looms for Weaving.
Year: 1894

page_text: Date of Application, 6th Nov., 1894
Complete Specification Left, 5th Sept., 1895-Accepted, 2nd Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Shedding, Change-box, and Picking Motions of
Looms for Weaving.
We, GEORGE RICHARDSON of Low Mills Kendal in the County of West-
moreland, Woollen Manufacturer, and WILLIAM BROWN RICHARDSON, of
33 Victoria Street, Blackpool, in the County of Lancaster, Surgeon, do hereby
declare the nature of this invention to be as follows
This invention relates to improved apparatus or devices for actuating in a simple
and efficient manner, the shedding, the change box, and the picking motions of
Jooms, or any one or two of such motions.
According to this invention, cach motion is actuated from the first motion or
bottom shaft of the loom, through and by means of a reciprocating catch or catches
capable of engaging, preferably both above and below, with a suitably hooked
reciprocable bar connected with one of a pair of reciprocal elements which are
geared together by teeth or equivalent means and are provided with a stop or
locking device by means of which the driven element is or may be locked at the
end of each stroke of the driving element. The driving element, to which the
hooked bar is connected, may consist of a lever, a segment or the like, and the driven
element of a lever, a pulley, a bell-crank lever or the like.
The driven element is connected by suitable cords links levers and the like with
the shedding, change box, or picking devices.
Normally the catch or catches reciprocate without engaging with the hooked
bar, and consequently the motions are not actuated. If however, the hooked bar
be raised or lowered, it will be engaged with one of the catches and will thereby
be reciprocated as long as it remains in that position, whether it be for a single
stroke or for more, and the reciprocation will cease as soon as the hooked bar is
restored to the normal position. The necessary lifting and lowering of the hooked
bar may be effected by means of known devices such as a pattern chain, tappets, a
Jacquard machine or the like.
Dated this 5th day of November A D 1894
Improvements in the Shedding, Change-box, and Picking Motions of
Looms for Weaving.
We, GEORGE RICHARDSON of Low Mills, Kendal, in the County of West-
moreland, Woollen Manufacturer, and WILLIAM BROWN RICHARDSON of
33 Victoria Street, Blackpool, in the County of Lancaster, Surgeon, 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 improved devices or apparatus for actuating in a siniple
and efficient manner, the shedding, the change-box, and the picking motions of
looms, or any one or two of such motions.

page_text: According to this invention, each motion is actuated from the first motion shaft
or bottom shaft of the loom through and by means of a reciprocating catch or
catches capable of engaging, preferably both above and below, with a suitably
hooked reciprocable bar connected with one of a pair of reciprocable elements
which are geared together by teeth or equivalent means and are provided with a
stop or locking device by means of which the driven element is or may be locked
at the end of each stroke of the driving element. The driving element to which
the hooked bar is connected, may consist of a lever, a segment or the like, an 1 the
driven element of a lever, a pulley, a bell-crank lever, or the like.
The driven element is connected by means of suitable cords links levers and the
like, with the shedding, the change-box, or picking devices.
The accompanying drawings illustrate in what manner our invention may be
carried out, and are hereinafter referred to.
Figure 1 illustrates the improved device in elevation.
Figure 2 is a view of a detail.
In the drawing, A is a rocking lever, which has an oscillatory motion communi-
cated to it from either the crank shaft or the bottom shaft of the loom by known
means. The opposite ends of this lever are connected by the rods B, B 1, with the
catches C, C 1, which are thus reciprocated in the slides D, D 1. These catches are
preferably constructed as bars having cross sections as illustrated by the drawing,
and each extends across the whole series of the hooked bars. As illustrated by the
drawings, the hooked bars E E' have a tooth both above and helow, so that each
bar may be engaged, when raised, by the upper catch bar C, and when lowered, by
the lower catch bar C 1. In different looms there will be different numbers of the
hooked bars, according to the class of work to be done. Thus, there will be one for
the picking motion, one for each shaft of the shedding motion, and one for each
change box minus one. Each hooked bar is connected with a driving element F,
which consequently partakes in the reciprocating motion of its hooked bar, and
whose motion may be limited in either direction by suitable stops or the like. This
element may be variously constructed, but most conveniently as shown by the
drawing, which represents a lever having a broadened end opposite to the hooked
bar connection, and a recess G in the broadened end. The driving element is
geared by its recess and lateral projections, with the driven element H, which may
have any suitable number of tooth like projections such as the centre tooth I and
the two lateral projections i, i. If the number of tooth like projections on the
driven element be increased, then there is a corresponding increase in the number
of recesses in the driving element. Thus, motion of the driving element is com-
municated to the driven. Whatever method of construction of gearing of these
elements be adopted, it is arranged, that at the end of each stroke, the outer surfaces
of the teeth or their equivalents abut against each other as shown, so that thereby
the driven element is locked in position until liberated by the next motion of the
driver.
The driven element has a projecting part such as J, to which the links cords
levers or the like connecting it with the picking lever, the change-box, or the
shedding motion as the case may be, is or are connected. The change-boxes on
arriving at their positions may be held by a spring catch which is released just
before the next change by known means. In heavy work, the gearing teeth of one
element may be friction bowls, in which case the opposing faces against which the
bowl would be locked may be curved instead of being plane.
The hooked bars are actuated through the needles N, by means of the levers L
and the pattern chain P. The levers are weighted so that they normally tend to
push up the needles N, and thus litt the hooked bars into their higher positions.
As a projection or peg on the pattern chain comes under any particular lever, the
fulcrum of the lever being between the pattern chain and the needles, the needle
end of the lever is lowered, the needle and its hooked bar partaking of the same
motion.
It will be seen that the functions of the two catch bars are respectively to move

page_text: the hooked bars in opposite directions. Thus, the upper catch bar C moves its
engaged booked bar in the direction of the driving element ¡F; the lower catch
bar C1 operates in the opposite direction. Hence, when one of the hooked bars
is moved to the end of its stroke, it remains there until it is raised or lowered to
engage with the other catch bar, which returns it. The pattern chain is
constructed to give the required motions.
In the drawing we have represented only two of the hooked bars with their
accessories, to avoid confusion, one set being denoted by ordinary letters of
reference, and the other set by accented letters.
Figure 2 illustrates the device employed to prevent accidental lateral displace-
ment of the hooked bars E from the driving elements F. The end of the bar
is furnished with a tapered projection R which fits under a corresponding
projection R 1 on the driver.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what
we claim is :--
(1.) In a loom, a reciprocating catch or catches, a reciprocable hooked bar
capable of being engaged with and disengaged from the catch or catches, a driving
element actuated by the hooked bar and consisting of a lever a segment or the like,
and a driven element geared with the driver and consisting of a lever, a wheel, a
bell-crank lever or the like, constructed arranged and operated substantially as and
for the purpose hereinbefore described and as illustrated by the accompanying
drawings.
(2.) In an apparatus for actuating the shedding, the change-box, and the picking
motions of looms or any one or two of such motions, a reciprocable driving and
driven element geared together and constructed so as to be locked at the end of
each stroke, substantially as and for the purpose hereinbefore described and as
illustrated by the accompanying drawings.
Dated this 4th day of September 1895.
W. E. HEYS & SON,
Agents for the Applicants.