Improvements in Shedding Mechanism for Weaving Looms.
Year: 1896

page_text: Date of Application, 11th July, 1896
Complete Specification Left, 12th Apr., 1897-Accepted, 22nd May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Shedding Mechanism for Weaving Looms.
We, CHARLES HAHLO and CHARLES EDWARD LIEBREICH, of Mill Street,
Bradford, in the County of York, Machine Makers, and JAMES EDWARD
THOMPSON, of 26, Dudley Hill Road, Undercliffe, Bradford, aforesaid, Mechanic,
do hereby declare the nature of this invention to be as follows:-
This invention has for its object the construction of shedding machines in such
a manner that "checks" and what are known as "cross border" patterns such as
are woven in pocket handkerchiefs, shawls and the like, may be woven with a less
length or string of cards or lags than is the case with shedding machines constructed
and arranged in the manner as hitherto.
We accomplish the object in the following manner. The cards or lags of the
pattern surface for operating the draw knives and healds are mounted on cylinders
of the usual construction, and operated in the ordinary manner.
A second cylinder is placed in a convenient position upon the machine frame,
and upon this cylinder is mounted a chain having links of varying heights, the
cylinder being operated at intervals, the distance equal to the length of a chain
link, by a reciprocating pawl, when the pawl is allowed to engage with a ratchet
wheel secured to or connected with the said cylinder.
The before mentioned pawl is controlled for engaging or disengaging with the
ratchet wheel on the second cylinder, by a third cylinder having a similar chain
with links of varying heights mounted thereon. The last mentioned cylinder is
operated at each pick of the loom, and so long as the high links keep the pawl
clear of the second cylinder ratchet wheel, the cylinder is not operated; thus
allowing the same set of pegs or cards to select the healds; but as soon as the
pawl is allowed by a shallow link to engage with the ratchet wheel of the second
cylinder, it is operated the distance equal to one tooth and link, the chain links on
this the second cylinder moves or retains the needle bar of the shedding machine
in the position required by the pattern in accordance with the depth or height of
the chain links, which are arranged to suit the pattern required to be woven.
Dad 7th day of T..1.. 1906
Improvements in Shedding Mechanism for Weaving Looms.
We, CHARLES HAHLO and CHARLES EDWARD LIEBREICH of Mill Street,
Bradford, in the County of York, Machine Makers, and JAMES EDWARD
THOMPSON, of 26 Dudley Hill Road, Undercliffe, Bradford, aforesaid, Mechanic,
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 has for its object, the construction of shedding machines in such

page_text: a manner, that "checks" and what are known as "cross border" patterns, such as
are woven in pocket handkerchiefs, shawls and the like, may be woven with a less
length or string of cards or lags, than is the case with shedding machines constructed
and arranged in the manner as hitherto.
In describing this invention in detail, reference is made to the accompanying
drawings illustrative thereof, which are referred to in the following description by
letters and figures.
Fig. 1 represents a side elevation of a warp shedding machine arranged according
to our invention.
Figs. 2 and 3 details hereafter referred to relate to card pattern surfaces applied
to the apparatus.
The apparatus is applicable for a card or peg pattern surface for selecting the
operating draw knives connected to the healds, the cards or lags being mounted on
cylinders of the usual construction, which are operated in the usual manner.
The apparatus is fixed to the top portion of à loom in the ordinary manner, the
levers A. one at each side of the machine, are connected to and operate the draw
knives B. and B' in the ordinary manner, the lever C. is oscillated by a draw blade
of the usual construction and in the manner as hitherto.
To one arm of the lever C. is hinged a curved link D. to which is attached a
pawl E. in a manner that it may engage at each pick of the loom with the ratchet
wheel F. or whenever required by the pattern surface. The wheel F. is coupled
to a cylinder or barrel upon which is placed a chain G. one or more links of which
is or are not so high as the rest.
When one of these shallow links of the chain G. arrives at the top, that is so as
to be in contact with the curved link D. at or near the end of the said link as
at D¹ the curved link is allowed to descend such a distance, so that another pawl H.
attached to the said curved link, engages with the ratchet wheel on the cylinder or
chain barrel J. moving the same aud chain K. thereon a certain distance, thereby
raising or lowering the lever L. resting on the top link of chain K. in accordance
with the depth of the link.
The lever L. has by preference a spring bar L' attached thereto, which is curved
in one portion for resting on the top. link of chain K. the lever is supported by a
fulcrum pin at M. which is extended' by arm N. having a slot hole P. in which
engages a pin Q. of arm R. secured to a shaft S. on which is also secured a
bracket T. containing a series of needles U. of the ordinary description.
The cylinder V. is of the ordinary construction fitted with peg lags W. and is
rotated and reciprocated in the lever V in the ordinary manner. When raised,
the ends of the pegs X. of one series come in contact with the needles U. thereby
raising the same and allowing the draw knives B. and B' to operate the draw
blades, healds and warp threads as required by the pattern surface.
Each lag W. is provided with two sets of pegs X. and when the lever L. and
extended arm N. are held in one position by the height of a link of chain K. the
needles U. are in a position, that one set of pegs X. will act upon them, but should
the chain barrel J. be moved by the pawl H. so as to bring a link of chain K. of
a different height under the lever L. say for example a link of greater height, then
the lever L. will be raised, thereby lowering the extended arm N. thus moving the
needle bracket T. and needles U. such a distance in the direction of arrow, that the
second series of pegs X. will engage with the needles U. and select the required
draw blades, healds and warp threads to be operated.
The foregoing description relates to what is known as a lag and peg pattera
surface, but it will be readily understood by persons conversed with weaving, that
cards may be utilized in place of the lags and
pegs.
When cards are used, the cylinder is by preference square, Fig. 2 shows an end
elevation and Fig. 3 an elevation of some portion of its length with cards mounted
thereon.
The lever V and card cylinder Y. are reciprocated and the card cylinder
rotated in the usual mauner, the card cylinder 'Y. may be provided with three

page_text: rows of holes, so that the chain K. will require to have links of three heights for
operating the needle bracket T. that the needles U. may come opposite to the
required row of holes in the cylinder Y.
When the cylinder Y. is raised, those needles U. that are opposite the blank
portions of the top card Z. covering the holes will be operated, the other needles
opposite the holes will pass through same, thereby selecting the draw blades
according to the pattern surface cut on the cards Z.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. A shedding machine having cylinders or chain barrels provided with chains
constructed of links of varying heights operated substantially in the manuer and
for the purpose as hereinbefore set forth.
2. A shedding machine in which is combined a lag or card cylinder with a
needle bracket T. and needles U. operated by chain links substantially in the
manner and for the purpose as hereinbefore set forth.
3. A rotating barrel J. supporting chain K. composed of links of varying
heights combined with the levers L. P.aud R. and needles U, arranged substantially
in the manner and for the purpose as herein before set forth.
Dated this 9th day of April 1897.
JOHN WAUGH,
Agent.