IMPROVEMENTS IN LOOMS T »
Year: 1880

page_text: LETTERS PATENT to James Hollingworth, of Dobcross, in the County of York,
Machine Maker, and Arthur Benjamin Crossley, of Halifax, in the County of
York, Consulting Engineer, for an Invention of "IMPROVEMENTS IN LOOMS
T
»
PROVISIONAL SPECIFICATION left by the said James Hollingworth and
Arthur Benjamin Crossley at the Office of the Commissioners of Patents on
the 15th October 1880.
JAMES HOLLINGWORTH, of Dobcross, in the County of York, Machine Maker, and
ARTHUR BENJAMIN CROSSLEY, of Halifax, in the County of York, Consulting
Engineer. "IMPROVEMENTS IN LOOMS FOR WEAVING, AND IN APPARATUS
EMPLOYED THEREIN."
This Invention relates, firstly, to looms having rising and falling shuttle boxes
employed in weaving woollen and other heavy goods. The object of this part of
the Invention is to retard the fall of the boxes, or lower them gradually, and
prevent the noise and wear and tear occasioned by their being allowed to drop
from one box to another. The improvements consist in applying a pulley (by
preference) to the bottom box lever, over which a strap or cord is passed, held fast
at one end and weighed at the other end. Inside this pulley a catch or other
suitable shaped device is placed on an eccentric so arranged that when the shuttle
boxes are rising the pulley is free to revolve, but when descending the pulley is
brought into contact with the eccentrically placed catch which immediately stops the
rotation of the pulley, whilst at the same time the box lever is prevented dropping
suddenly by means of the frictional contact of the strap around the said pulley.
Secondly. Our Invention relates to a new combination and arrangement of parts
for forming a joint for attaching or connecting together the jacks and jack hooks
employed in actuating the "shed." One of the principal objects of the Invention
is to arrange the parts so that they can be moulded without the use of a core or
'chill," and be put together so that they form a hinge or joint. The parts
employed are three in number, and will be understood on reference to the Drawings,
[Pasice Sal

page_text: where Figure 1 represents one view of the parts when put together, a being the
jack and b the jack hook; Figure 2 is a view of the other side of the connected
parts, and Figure 3 is a cross section of same; Figures 4, 5, 6, and 7, are views of
the parts disconnected. It will be seen that the jack hook 6 has openings c formed
therein, leaving a solid part d between the openings; through these openings the
cranked piece or staple c is partially passed, the recessed part f resting upon the
solid part d. The end of the jack a is then slided underneath the staple and kept
in position thereby. The projecting part of the staple prevents the jack being
removed from or placed onto the jack hook laterally. A modification of the
Invention is shewn in Figure 8, which shews the parts placed together; Figure 9
is a view of the other side, and Fig. 10 is a cross section; Figures 11, 12, 13,
and 14, shew the various parts separately. Instead of employing the staple, as in
the previous case, the grooved ring g is employed. When putting the three parts
together the ring is first placed through a tapered hole made in the jack when the
hook, which has a bevilled groove or slot therein, is slided underneath the bevilled
upper portion of the ring which keeps it in position. This arrangement also
prevents the parts becoming disconnected or put together laterally.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Hollingworth and Arthur Benjamin Crossley in the Great
Seal Patent Office on the 14th April 1881.
JAMES HOLLINGWORTH, of Dobcross, in the County of York, Machine Maker, and
ARTHUR BENJAMIN CROSSLEY, of Halifax, in the County of York, Consulting
Engineer. "IMPROVEMENTS IN LOOMS FOR WEAVING, AND IN APPARATUS
EMPLOYED THEREIN."
This Invention relates, firstly, to looms having rising and falling shuttle boxes
employed in weaving woollen and other heavy goods. The object of this part of
the Invention is to retard the fall of the boxes, or lower them gradually, and
prevent the noise and wear and tear occasioned by their being allowed to drop from
one box to another. The improvements consist in applying a pulley to the bottom
box lever, or other convenient place, over which a strap or cord is passed, held
fast at one end and weighted at the other end. Inside this pulley a catch or other
suitable shaped device is placed on an eccentric, so arranged that when the shuttle
boxes are rising the pulley is free, but when descending the pulley is brought into
contact with the eccentrically placed catch, which immediately stops the rotation of
the pulley, whilst at the same time the upper box lever is prevented dropping
suddenly by means of the frictional contact of the strap around the said pulley.
The Invention will be better understood on reference to the accompanying
Drawings, wherein Fig. 1 (Sheet 1) is end elevation of so much of a loom as is
necessary to shew our improvements. A are the shuttle boxes; B, the upper box
lever; C, the bottom box lever connected together by the upright rod D in the
ordinary manner. In connection with the bottom box lever C and upright rod D
we apply a bracket E, in which is fastened a stud or short shaft F, upon which is
a loose pulley or flanged disc G free to revolve thereon. Upon the stud F is
keyed an eccentric H having a cam or projection I acting, when required, on the
inner side of the pulley or flanged disc, and so stopping its rotation; J is a strap
fastened at one end K to any convenient part, and having at its other end
adjustable weights L.
The action of the apparatus is as follows:-
When the shuttle boxes A are lifted by the cams M the rod D is lowered, causing
the pulley to revolve in the direction of the arrow N, such movement not affecting
the cam or projection I, but when the boxes are lowered the rod D is raised,
causing the pulley to revolve in the opposite direction, as indicated by the arrow P,
by which means the eccentric cam I is brought into contact with the inner side of
the flange of the pulley and its rotation is gradually stopped, so that the continued
upward motion of the rod D is retarded by the frictional contact of the weighted
strap J over the pulley. By this means the boxes are lowered easily and without
noise.
Secondly. Our Invention relates to a new combination and arrangement of parts
for forming a joint for attaching or connecting together the jacks and jack hooks
employed in actuating the "shed." One of the principal objects of the Invention is
to arrange the parts so that they can be moulded without the use of a core or
"chill," and be put together so that they form a hinge or joint. The parts
employed are three in number, and will be understood on reference to the
Drawings, where Fig. 1 represents one view of the parts when put together,
a being the jack lever and b the jack hook; Fig. 2 is a view of the other side of the
connected parts, and Fig. 3 is a cross section of same; Figs. 4, 5, 6, and 7, are views
of the parts disconnected. It will be seen that the jack hook 6 has openings c
formed therein, leaving a solid part d between the openings; through these
openings the cranked piece or staple e is partially passed, the recessed part of resting

page_text: A
upon the solid part d. The end of the jack lever a is then slided underneath the
staple and kept in position thereby. The projecting part of the staple prevents the
jack lever being removed from or placed onto the jack hook laterally.
modification of the Invention is shewn in Fig. 8, which shews the parts placed
together; Fig. 9 is a view of the other side, and Fig. 10 is a cross section;
Figs. 11, 12, 13, and 14, shew the various parts separately. Instead of employing
the staple, as in the previous case, the grooved ring g is employed. When putting
the three parts together, the ring is first placed through a tapered hole made in
the jack lever, when the hook, which has a bevilled groove or slot therein, is
slided underneath the bevilled upper portion of the ring which keeps it in position.
This arrangement also prevents the parts becoming disconnected or put together
laterally.
Having now described the nature and object of our said Invention, together with
the manner in which the same is to be or may be performed or carried into practical
effect, we wish it to be understood that we claim as our Invention,―
Firstly. The eccentric H and projection I used in combination with the brake
pulley G for the purpose substantially as herein shewn and described.
Secondly. The combined use of the three parts, as shewn in Figs. 4, 6, and 7,
for the purpose of forming a joint or connection in jacks and hooks, substantially
as shewn and described.
Thirdly. The combined use of the three parts, as shewn in Figs. 11, 13, and 14,
for the purpose of forming a joint or connection in jacks and hooks, substantially
as shewn and described.
In witness whereof, I, the said Arthur Benjamin Crossley, for and on behalf of
myself and the said James Hollingworth, have hereunto set my hand and
seal, this Twelfth day of April, in the year of our Lord One thousand
eight hundred and eighty one.
ARTHUR B. CROSSLEY. (L.S.)