Improvements in the Shedding or Pattern Mechanism of Looms for Weaving.
Year: 1893

page_text: Date of Application, 23rd May, 1893
Complete Specification Left, 23rd Feb., 1894-Accepted, 24th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Shedding or Pattern Mechanism of Looms for
Weaving.
I, EDWARD HOLLINGWORTH, of the Firm of Hutchinson, Hollingworth & Co.,
Limited, of Dobcross Loom Works, Dobcross, in the County of York, Loom
Makers, do hereby declare the nature of this invention to be as follows (which
invention has been communicated to me from abroad by George Frank Hutchins,
of Worcester, Massachusetts, United States of America, Machine Maker) :-
:-
This invention relates to the shedding or pattern mechanism of looms, and the
object of my invention therein is to provide an auxiliary pattern indicating cylinder
and peg lag chain to be used when weaving lengthy patterns requiring a large
number of bars. This auxiliary pattern chain will be lighter and less expensive
than the ordinary chain made from small pulleys and tubes, and moreover such
auxiliary pattern chain can be put on or taken off the loom without disturbing the
ordinary pattern mechanism except to remove or replace the same.
The invention herein named has reference to that class of loom commonly called
a Hollingworth and Knowles' loom, comprising top and bottom cylinder gears,
between which are a series of vibrating gear wheels arranged side by side, pivotted
on vibrating levers. The vibrating gear wheels have also connected to them
vibrator connectors or lever arms, the opposite ends of which are connected to the
harness or jack levers. The pattern cylinder carries the pattern chain composed
of pulleys and tubes, such said pattern cylinder being driven by a toothed wheel
from the bottom cylinder gear shaft, all in the usual manner and forming no part
of this invention.
My present invention consists in the employment of an auxiliary pattern cylinder
provided with a pattern chain of ordinary peg lags. The auxiliary cylinder is
revolved by means of a chain passing over chain wheels driven from the ordinary
pattern cylinder.
I also employ auxiliary indicator levers with hooked ends extending around
what is commonly called the heel pin and it is of this shape for convenience
in taking out an intermediate vibrator bar, the said auxiliary levers being provided
at their extreme ends with a curved foot which rests upon and is actuated by studs
in the peg lag chain. I also employ a set of hooked levers provided with bosses
to receive the ends of springs resting in sockets formed in the said indicating
levers. On the heel pin there is provided a lifting frame consisting of two side
bars and a connecting bar through which is fastened a knife adapted to be engaged
with the hooked ends of the hooked levers previously referred to. A cam is
fastened on the shaft of the top cylinder and it acts against a friction pulley on the
extended arm of the lifting frame. This cam raises the lifting frame a distance.
equal to the distance of the lift made by the pulleys on the ordinary chain, the
movement of which causes the knife carrying the hooked levers also to be raised,
the upward movement lifting the ordinary vibrating levers carrying the vibrating
wheels, whereby the said vibrating gears can be put into or out of mesh either
with the top or bottom cylinders. The cam on the end of the top cylinder is
proportioned and timed as to lift the vibrator levers in the same time as the
ordinary chain and the auxiliary pattern cylinder is so timed as to prevent the
pegs on the pattern chain to be moved before the cam lifts the hooked levers.
The invention herein described may be employed to operate the shuttle boxes.
In a loom provided with the above improvements the entire pattern or indicating
surface will be carried on the auxiliary pattern cylinder, in which case the ordinary
DQ 7

page_text: pulley and tube chain will be removed from their cylinder and the pattern indicated
entirely from the auxiliary chain. The ordinary pattern cylinder remains on the
loom and is driven by the ordinary pattern mechanism and the auxiliary cylinder
is driven by the regular pattern cylinder through the chain wheels and chains and
this function is the only one the regular pattern cylinder performs whilst the
auxiliary pattern is in use.
COMPLETE SPECIFICATION.
Improvements in the Shedding or Pattern Mechanism of Looms for
Weaving.
I, EDWARD HOLLINGWORTH, of the Firm of Hutchinson, Hollingworth & Co.,
Limited, of Dobcross Loom Works, Dobcross, in the County of York, 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 (which invention has been communicated to me from abroad by
George Frank Hutchins, of Worcester, Massachusetts, United States of America,
Machine Maker) :-
This invention relates to the shedding or pattern mechanism of looms, and the
object of my invention therein is to provide an auxiliary pattern indicating cylinder
and peg lag chain to be used when weaving lengthy patterns requiring a large
number of bars. This auxiliary pattern chain will be lighter and less expensive
than the ordinary chain made from small pulleys and tubes, and moreover such
auxiliary pattern chain can be put on or taken off the loom without disturbing the
ordinary pattern mechanism except to remove or replace the same.
The invention herein named has reference to that class of loom commonly called
a Hollingworth and Knowles' loom, comprising top and bottom cylinder gears,
between which are a series of vibrating gear wheels arranged side by side, pivoted
on vibrating levers. The vibrating gear wheels have also connected to them
vibrator connectors or lever arms, the opposite ends of which are connected to the
harness or jack levers. The pattern cylinder carries the pattern chain composed
of pulleys and tubes, such said pattern cylinder being driven by a toothed wheel
from the bottom cylinder gear shaft, all in the usual manner and forming no part
of this invention.
Referring to the drawings, Fig. 1 is a side elevation of a portion of the head
motion, looking in the direction of arrow a, Fig. 2 which is a broken plan view,
with some of the parts shewn in Fig. 1 omitted, for the sake of clearness. Fig. 3 is
a sectional detail, on an enlarged scale, through the indicator lever and hook joint,
taken at the point indicated by dotted line, X-X, Fig. 1.
In the accompanying drawings 1'are the loom arches, 2 the head frame, 3 the
head arms, and 4 and 5 the top and bottom cylinder gears, mounted on shafts
journalled in the head frame at 6 and 7. 8 is the front vibrator gear wheel of a
series arranged side by side, and pivoted at 9 on the vibrator levers 10, which are
pivoted at 12. The vibrator connectors 13 are pivoted at 14 on the vibrator gears,
and their opposite ends, not shewn, hooked to the harness levers.
15 is the regular pattern cylinder, carrying the pattern chain 15', made up of
rolls and tubes in the ordinary manner, and mounted in journals in the head arms 3,
and driven through gear 16 fast on the pattern cylinder shaft 15 and reverse
wheels 17 and 18 from the bottom cylinder gear shaft, all in the usual manuer.
I will now describe my auxiliary pattern indicating chain. The auxiliary pattern
cylinder 20 is journalled in the lower ends of arms 21, fastened by set screws 22.
I have shewn in the drawings the pattern cylinder 20 carrying a well known
form of pattern chain consisting of wood lags 23 carrying pius 23. The auxiliary

page_text: pattern cylinder 20 is turned by means of the toothed wheel 26, fast on the outer
end of shaft 27, and connected by a chain 28 with an equal toothed wheel 29 fast
on the end of cylinder shaft 15 outside of gear 16. Pivoted at 30 on vibrator
levers 10 are auxiliary indicator levers 31, provided with a hook end 31', which
extends around the heel pin 12 for convenience in taking out an intermediate vibrator
lever, also provided at their extreme ends with the curved foot 32, adapted to work
with indicator pins 23. Also at 30 on vibrator levers 10 are pivoted the lower
ends of hook levers 33, see Figs. 1 and 3, which are provided which pieces 34 to
receive ends of springs 35 which rest in sockets 36, formed in the indicator levers 31,
see Fig. 1. On the heel pin 12 inside the arms 21, is pivoted a lifting frame,
consisting of the two side bars 37, 371, and the connecting cross bar 371, see Fig. 2.
To the connecting cross bar 37" of the frame 37 is fastened a knife 38, adapted to
engage the hooked ends of the hook 33. The side arm 37' of the frame is extended
as shewn at 39, Figs. 1 and 2, and carries in a fork at the end thereof, a roll 40
fitted to turn freely on a pin 41.
On the end of the top cylinder shaft 6' is a cam 42, adapted to work with roll 40,
and lift the combined frame 37, 37, 37". The proportions of the cam 42, and
distances of roll 40 and knife 38, from the centre of heel pin 12, are such that the
upward and downward movements imparted to the vibrator levers 10 through
hooks 33, is the same as that imparted to them by the regular pattern chain 15', or
such as to properly throw the vibrator gear 8 into action with either top or bottom
cylinder gear 4 or 5 as indicated. The cam 42 is so proportioned and timed as to
lift the vibrator levers 10 in the same time as the regular chain 15', and the pattern
chain cylinder 20 is so timed that the indications of pins 23¹ is completed before the
cam 42 lifts the hooks 33. The spring 35, which actuates the book lever 33, is
provided to guard against injury to the parts, in case they get out of time, so that
pins 23¹ operate to lift the indicator levers 31 when the knife is in position to prevent
the hooks 33 catching over the top of the knife. The spring 35 has sufficient tension
to lift the hook 33 positively, when it is clear, but yields without damaging the
parts in case of interference. A lug 43 on the hook 33 engages a projection 43',
on the indicator lever 31, and prevents the spring 35 from pushing the hooks 33
forward, when the knife 38 is up clear of them. Comb teeth 44, fast on the back
side of the heel shell 45, keep the indicator levers 31 properly in line to engage
each its own row of indicator pins 231, on the auxiliary pattern chain. The heel
shell 45 is provided with a handle 46, see Fig. 2, by which it may be rotated about
a quarter revolution to permit the levers 10 to be unhooked or lifted from the heel
pin 12, and allow any intermediate vibrator lever removed from the series without
disturbing the others.
In a loom provided with my improvements, the entire pattern or indicating service
will be carried on the auxiliary pattern cylinder 20, in which case the regular roll
and tube chain 15 will be removed from the regular cylinder 15, and the pattern
indicated entirely from the auxiliary chain. The regular pattern cylinder 15
remains on the loom, and is driven by the regular pattern driving mechanism, as
above described; and the auxiliary pattern cylinder 20 is driven by the regular
pattern cylinder 15, through the chain 28, and wheels 29 and 26.
:
By means of the auxiliary pattern chain, for the purpose above stated, I am
enabled to economise in the material, and in the labour of constructing the chain,
for the reason that the stock of said auxiliary chain is much cheaper, and more
easily and readily put together, than the regular roll and tube chain. It will be
understood that the details of construction of the parts of the loom shewn in the
drawings may be varied somewhat if desired.
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 regular pattern driving mechanism,
of an auxiliary pattern cylinder, carrying a peg lag chain to be used in lieu of the

page_text: regular pattern chain, and adapted to act on auxiliary indicator levers 31 to operate
the regular vibrator levers 10 together with an intermediate connection between
the regular pattern driving mechanism and the auxiliary pattern cylinder for
driving the latter from the regular pattern driving mechanism substantially as
set forth.
Secondly. In a loom, the combination with the regular pattern driving mechanism,
of an auxiliary pattern cylinder driven from the regular pattern driving mechanism,
and carrying a peg lag chain indicator levers 31 pivoted on the regular vibrator
levers 10 together with a lifting frame 37 pivoted at one end, for operating the
indicator hooks 33 and a cam fast on the top cylinder shaft for operating said
lifting frame, substantially as shewn and described.
Thirdly. In a loom, the combination with the regular pattern driving mechanism,
of an auxiliary pattern cylinder, driven from the regular pattern driving mechanism,
through a chain 28 and wheels 26, 29 one of said wheels being fast on the regular
pattern cylinder, and the other being fast on the auxiliary pattern cylinder, and an
indicating surface carried on the auxiliary pattern cylinder, and auxiliary indicator
levers, pivoted on the regular vibrator levers, and a lifting frame hinged at one end,
and operated by a cam, said frame adapted to engage the indicator hooks to operate
the regular vibrator levers, according to the indications of the auxiliary pattern
surface on the auxiliary indicator levers substantially as set forth and shewn in the
drawings.
Fourthly. In the shedding mechanism of a loom; the combination with indicator
levers, of a movable heel shell provided with comb teeth, between which the
indicator levers extend substantially as shewn and described.
Dated this 22nd day of February 1894.
TASKER & CROSSLEY,
Huddersfield, Agents.