IMPROVE- MENTS IN SHEDDING MOTIONS AND IN BOX MOTIONS AND IN PICKING MOTIONS OF LOOMS FOR WEAVING
Year: 1884

page_text: I FRANK LEEMING of North Vale Works, Bradford, in the County of York,
Machine Maker, do hereby declare the nature of any said invention for "IMPROVE-
MENTS IN SHEDDING MOTIONS AND IN BOX MOTIONS AND IN PICKING MOTIONS OF
LOOMS FOR WEAVING" to be as follows:-
The object of this my invention is To ensure an " open shed" or a "centre shed”
at will, on one, and the same shedding motion, or dobby-To operate the box lover
and shuttle box, so as to effect the required change of shuttle-To secure the
bottom of the cell; being linable with the shuttle race, and To regulate and control
the picking motion.
For purpose aforesaid I employ a series of slides or rocking levers, working
through guide, and supporting grates, or on studs, on each slide, or rocking lover
are two catches, one above the other, and having a hook, at each end (pointing
inwards) each catch being free to oscillate upon a central carrying pin, attixed in
each slide.
The knives or draw bars, of which there are four, work through slots, and are
attached to connecting pieces, formed after the figure of the letter X as at the
points 1, 2, 3, 4 (thus ×)-The two connected knives 4, 3 are for the purpose of
operating one hook, upon the top catch, and the hook of the lower catch, on the
opposite side of its central pin, the other two connected knives 1, 2, operate the
corresponding hooks, on the upper and lower catches.
The outer end of each slide, or rocking lever, is provided with an inclined
projecting piece, or cam surface, which acts upon the ends of two shedding levers
one by connections communicates with the top of the healds, the other by its
connections communicates with the bottom heald staves.
The pattern mechanism consists of two lagged cylinders, operating two series of
tumbler levers, one for the upper catches, the other for the lower catches.
The action in "open shedding" is as follows:-The upper lag cylinder having
placed through ordinary tumbler levers one hook of the top catch, upon knife 4,
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page_text: the hook on other end of this catch, is clear of knife 1, whilst the lower cylinder
and tumbler levers, have placed one hook of the lower catch upon its knife 3, the
hook at the other end of this catch, is clear of knife 2, so that knife 3 draws the
catches, and slide or rocking levers, to the end of the stroke, whilst the hook of the
top catch, being on knife 4, prevents any possibility of overrunning, as knives 3,
and 4, travel together. On the return stroke, 4 is the puller, and 3 the follower,
and prevents overrunning.
So long as both catches, are left in the position indicated, the slides or rocking
levers will (by the knives) be caused to pass to and fro-But if a slide or rocking
lever, is to remain out, or at the end of its stroke, instead of returning, then the
hook of catch, must be lifted clear of knife 4, which will cause the hook on the
other end of this catch, to be in position for engaging with knife 1, and so long as
the pattern mechanism leaves the catches in the position just described, there will
be no movement of the slide or rocking lever.
In "centre shedding," all that is necessary is, to place two cross bars, in slots,
one on each side of the slide, or rocking lover, these two bars, are connected and
operated, from the rocking arm, of the dobby, so as to travel one half tho distance,
of the stroke of the knives, so that whilst the knives, travel from one end of the
stroke, to the other, the cross bars are caused to travel, from the end to the centre,
and back to the end, in the same time, that the knives make the complete stroke,
the effect is, that all the slides or rocking levers, (and through their connections the
heald shafts) which would in open shedding, remain stationary, are forced to the
centre, thus making a centre shed, which is obtained by the bars referred to without
necessitating any change of indication by the pattern mechanism.
For operating the shuttle box, I employ two, peg, and star wheels, similar to
those described in specification N° 15484, A.D. 1884 there being two finger levers,
under control of the pattern mechanism, and which act through the agency of a
cam slot, formed in the boss, of the peg segment of the wheel-The connecting rods
or links, from the star wheels, are at their lower ends, passed through a swivelling
piece, of a longitudinal shuttle box lever, the shuttle box rod, being at the outor
end of the said lever, whilst the connecting rods suspend the lever, one at its inner
end, the other between this end and the shuttle box rod-A spiral spring is
attached to each of the connecting rods, by hooks, and to the lever, for purpose
hereinafter explained.
The action is as follows:-A peg of the lag cylinder, will depress the end of the
finger lever, bringing its projecting pin, into the cam groove of the boss, of the
movable part of the peg wheel, whereon the pegs will be forced' into line, with the
star wheel, and the latter will make a half revolution, and is then locked, and
suppose it to be the star wheel, over the inner end of the lever, this end will be
lifted, or depressed, the other connecting rod and its swivelling piece, acting as
fulcrum, whilst on the other hand, had the other star wheel, been moved, its rod,
would have raised, or lowered the lever the end connecting rod and swivelling
pieces acting as fulcrum, so that it will be seen, that if the star wheel and rod over
inuer end of the lever, is operated, the latter will make its lever movement, moving
the box rod, one cell only, but when the other star wheel operates, the lever being
moved on its end fulcrum, receives an increased motion, and the shuttle box is
moved two cells, but when both star wheels are operated, simultaneously, the
lever receives its maximum amount of motion, and the shuttle box is moved three
cells.
Where there are more than four shuttle cells, to be employed, there will be an
additional star wheel, peg wheel, and connecting rod or link, and lever.
The spiral springs, are for the purpose of acting as an escapement, by permitting
the lever to be moved, without moving the shuttle box, in case of obstruction, in
either direction, and so preventing breakages.
For ensuring the movement of the box rod, being such as to bring the bottom of
the cell, exactly on the same plane, as the shuttle race, I fix a guide to the end

page_text: frame of the loom, having an inclined slot, through which a pin, attached to the end
of the box lever and the box rod is passed and works.
For controlling the picking motion I employ one star, and segment peg wheel, of
similar construction to those already described-This peg wheel is controlled by
finger lever, indicated from the pattern cylinder referred to or from an independent
cylinder as most convenient-From the star wheel, is connected a rod, to the
"clutch" on the picking shaft, or to the slide boss, of the picking tappet.
Dated this 2nd day of December 1001.
WALTER BRIERLEY,
Town Hall Buildings, Halifax,
Agent for the Applicant.

page_text: The pattern mechanism consists of two lagged cylinders 23, 24, one for the
upper catches, the other for the lower catches, which are turned alternately
every 2 picks.
The action in "open shedding" is as follows:-Suppose a blank on the peg
barrel 23, the spring 23ª will draw up the catch 6 so that the hook 7 will engage
with the knife 12, the hook 7 on other end of this catch, is clear of knife 10, whilst
the lower cylinder 24 has placed by a peg one hook 7 of the lower catch 5 upon
its knife 11, the hook at the other end of this catch is clear of knife 9, so that
knife 11 draws the catch 5 and slide 1 to the end of the stroke whilst the hook of
the top catch 6 being on knife 12 prevents any possibility of overrunning as
knives 11 and 12 travel together. On the return stroke, 12 is the puller, and 11
the follower, and preventing overrunning.
So long as both catches 5, 6, are left in the position indicated, the slides 1, 2, will
(by the knives) be caused to pass in the order described, to and fro-But if a slide
is to remain out or at the end of its stroke instead of returning then the hook 7
of the catch 6 must be lifted clear of knife 12 by peg on top cylinder 23 which will
cause the hook on the other end of this catch to be in position for engaging with
knife 10, and so long as the pattern mechanism leaves the catches 5, 6, in the
position just described there will be no movement of the slide-For levelling the
bealds, the cross bars 25, 26, are connected by rods 25ª and 20ª to levelling handle
in the centre of loom.
In centre shedding all that is necessary is to place two cross bars 25, 26, in
slots 27, 28, one on each side of the slides 1, 2, these two bars are connected to and
operated from the rocking arm 15 by rods 29 and 30, the latter being driven from
the crank shaft and given one half the amount of stroke required, when weaving
open shedding The lower cylinder 24 being disconnected, the upper barrel 23
being moved for every pick-and through their connections the heald shafts which
would in open shedding remain stationary are forced by the levelling bars 25, 26,
to the centre, thus making a centre shed.
For operating the shuttle box see sheets 4, 5, I employ two peg and star
wheels 1, 2, similar to those described in specification N° 15484, A.D. 1884, there
being two finger levers 3, 4, under control of the pattern mechanism 5 and which act
through the agency of a cam 6 formed on the boss of the peg segment wheel 1-
The connecting rods or links 7, 8, from the star wheels 2, 2, are at their lower
ends passed through a swivelling piece of a longitudinal shuttle box lever 9, the
shuttle box rod 10 being at the outer end 11 of the said lever 9, whilst the
connecting rods 7, 8, suspend the lever 9, one at its inner end, the other between
this end and the shuttle box rod 10-A spiral spring 12 is on each of the
rods 8 and 10.
The action is as follows:-A peg of the lag cylinder 5, will depress the end of
the finger lever 3, bringing its projecting pin 13, into the cam groove 6, of the boss,
of the movable part, of the peg wheel 1, whereon the pegs will be forced into line,
with the star wheel 2, and the latter will make a half revolution, and is then
locked, and suppose it to be the star wheel over the inner end of the lever, this
end will be lifted or depressed, the other connecting rod and its swivelling piece,
acting as fulcrum, whilst on the other hand, had the other star wheel 29 been
moved, its rod 8 would have raised or lowered the lever 9 the end connecting rod 7
aud the swivelling piece 14 acting as fulcrum, so that it will be seen that if the
star wheel 2 and rod 7 over inner end of the lever is operated the latter will make
its lesser movement moving the box rod, one cell only, but when the star wheel 29
operates, the lever 9 being moved on its end fulcrum receives an increased motion,
and the shuttle box 15 is moved two cells, but when both star wheels are operated
simultaneously the lever 9 receives its maximum amount of motion, and the shuttle
box is moved three cells.
The spiral springs are for the purpose of acting as an escapement by permitting
the lever to be moved without moving the shuttle box in case of obstruction in
either direction and so preventing breakages,

page_text: For ensuring the movement of the box rod, being such as to bring the bottom of
the cell, exactly on the same plane as the shuttle race, I fix a guide to the end
frame of the loom having an inclined slot, through which a pin attached to the end
of the box lever and the box rod is passed, and works.
For controlling the picking motion I employ one star wheel 1, and segment peg
wheel 2, of similar construction to those already described-The peg wheel 2 is
controlled by finger lever 3, indicated from the pattern cylinder (on sheet 4) by
rod 4, or from an independent cylinder as most convenient-From the star wheel I
is connected a rod 5, to the end of lever 6, to the latter is connected, rod 7,
attached to clutch lever 8 for operating clutch 9 on the picking shaft 10.
Having now particularly described, and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
1. The knives 9, 10, 11, 12, .catches 5, 6, slides 1, 2, and levers 18, 19, in
combination, and as herein described and illustrated by the drawings annexed.
2. The knives 9, 10, 11, 12, catches 5, 6, slides, 1, 2, levers 18, 19, together with
and in combination with the levelling bars 25, 26, as herein fully described and as
illustrated.
3. The levelling bars 25, 26, rods 29, 30, rocking lever 15b, for centre shedding,
and in combination, and as herein fully described and illustrated by the drawings
annexed.
4. The apparatus for indicating and effecting change of shuttle box or shuttle
cell, comprising star and peg wheels, with the connecting rods, and swing lever 9,
in connection, and in combination, and as herein fully described, and illustrated by
drawings.
5
5. The improved mechanism for effecting the picking, comprising the parts, 1, 2,
3, 4, 5, 6, 7, 8, 9, in combination, and substantially as herein described and
illustrated by drawings annexed.
D
1 1
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