Improvements in Loom Pattern Chains.
Year: 1891

page_text: Date of Application, 15th Oct., 1891
Comp ete Specification Left, 13th July, 1892-Accepted, 20th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Loom Pattern Chains.
We, ALBERT BROADBENT and JOHN WILLIAM SYKES, of Parkwood Mills,
Huddersfield, Yorkshire, Machine Makers, do hereby declare the nature of this
invention to be as follows:-
:-
This invention refers to harness fittings consisting of horizontal harness pin's
connected together by links, upon which pins the bowls or pulleys for lifting the
jack levers are arranged in accordance with the pattern of cloth to be woven, such
harness fittings being employed in connection with what are known as Hollingworth
and Knowles looms. It is found in working, that the weight of the pins and the
constant friction between them and the links, causes grooves to be cut in said pins,
whilst the openings in the links through which they pass are also enlarged or
elongated in shape, and when this is the case, the pins and links although otherwise
equal to new, have to be removed as useless and if not at once removed breakages
of the fittings result.
↓
To avoid these evils is the object of our invention, which we accomplish by
casting, forming, or attaching to cach link, certain bosses or annular extensions for
receiving the ends of the harness pins, such links being arranged alternately with
the bosses or extensions on the inner and outer sides.
By constructing the links with bosses or annular extensions a long bearing is
given at each end to the pins which are not therefore cut or grooved by the links
as is the case at present nor are such bearings so soon worn by friction and the
weight of the chain as hitherto.
Dated this 14th day of October 1901
TASKER & CROSSLEY
Huddersfield, Agents.
COMPLETE SPECIFICATION.
Improvements in Loom Pattern Chains.
We, ALBERT BROADBENT, and JOHN WILLIAM SYKES, of Parkwood Mills,
Huddersfield, Yorkshire, Machine 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 :-
This invention refers to harness fittings consisting of horizontal harness' pins
connected together by links, upon which pins the bowls or pulleys for lifting the
jack levers are arranged in accordance with the pattern of cloth to be woven, such
harness fittings being employed in connection with what are known as "Hollingworths
and Knowles" looms. It is found in working, that the weight of the pins and the
constant friction between them and the links, causes grooves to be cut in said pins,
whilst the openings in the links through which they pass are also enlarged or
elongated in shape, and when this is the case, the pins and links although otherwise
equal to new, have to be removed as useless, and if not at once removed breakage
of the fittings results.
To avoid these evils is the object of our invention which we accomplish by
casting, forming, or attaching to cach link certain bosses or annular extensions for
receiving the ends of the harness pins, such links being arranged alternately with
the bosses or extensions on the inner and outer sides.
In order more fully to understand our invention, we have annexed a sheet of
drawings illustrating same.

page_text: Figs. 1 and 2 are side and front elevations respectively of one construction of
our improved link for forming the chains. a is the link which is provided with
bosses or extensions & cast or otherwise suitably formed thereon. Holes or openings c
are bored through the bosses to receive the harness pins d and forming bearings
for same.
In Fig. 3 the bosses or extensions are only about half the length of those
shewn in Fig. 1, these being, in some cases, preferred to the longer bosses.
In forming the chain for use in the loom the links a are arranged as shewn at
Fig. 4, that is, alternately with the bosses or extensions on the inner and outer
sides, the harness pins & passing through the openings in the opposing bosses in
each link and being secured by the cotter pins e. In consequence of forming these
bosses on the sides of the links, it will necessitate making the pins d somewhat
longer. are the bowls or pulleys for operating the vibrating levers of the
jacquard, and g are the tubes which secure them in position on the harness pins and
prevent lateral movement of same.
At Figs. 5 and 6 (which are side and front elevations respectively) we shew
another form of link. In this case each link is provided with a small boss and a
large boss 6 forming male and female bosses or extensions; the smaller bosses b
being adapted to enter openings c¹ in the larger bosses b' on the neighbouring links
as will be plainly seen at the parts shewn in section in Fig 5. The harness pins d
pass through the openings e in the bosses and are secured as above set forth.
Each link is cranked so that when put together they will be lineable throughout
the chain.
At Fig. 7 the links a are cranked and coupled together as shewn, so that shorter
bosses may be cast on the links and a long bearing at the same time obtained
without taking up too much room on the pin such construction of the links also
enabling the old harness pins to be used, or links with short bosses may be arranged
alternately with links having long bosses for the same purpose. Another method
of coupling together the links of the chain is shewn at Fig. 8, wherein a represents
our improved links with bosses thereon, and are the ordinary links arranged
alternately. This method of constructing the chain also enables the old pins to be
used, and reduces wear and tear by about one half.
When the old harness pins are used up longer pins may then be obtained and the
chain constructed entirely of our improved links.
By the means and method here.nbefore described a long bearing is afforded to
each end of the harness pins, whereby the cutting or grooving of the harness pins
and clongation or enlargement of the bearings are altogether avoided and wear and
tear reduced to a minimum.
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
Firstly. In links, employed in forming chains for the jacquards of looms, the
formation of bosses or extensions bored to receive the harness pins d and forming
bearings for same for purposes substantially as herein described, and as shewn in
Figs. 1, 2, 3, 4, 7 and 8.
Secondly. In chains for the jacquards of looms, the construction of the links a
with male and female bosses or extensions b, b, and openings e, substantially” as
shewn in Figs. 5 and 6, and for purposes set forth.
Dated this 19th day of July 1905
TASKER & CROSSLEY,
Huddersfield, Agents.