CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1877

page_text: LETTERS PATENT to Walter Lord, of the Firm of Lord Brothers, of Todmorden,
in the County of York, Machine Makers, Cotton Spinners, and Manufacturers,
and George Jackson, of the same Placo, Manager, for the Invention of “CERTAIN
IMPROVEMENTS IN LOOMS FOR WEAVING."
ealed the 9th November 1877, and dated the 7th June 1877.
PROVISIONAL SPECIFICATION left by the said Walter Lord and George
Jackson at the Office of the Commissioners of Patents on the 7th June 1877.
WALTER LORD, of the Firm of Lord Brothers, of Todmorden, in the County of
York, Machine Makers, Cotton Spinners, and Manufacturers, and GEORGE JACKSON,
of the same Place, Manager. "CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING."
In looms of the ordinary construction, the shuttle on entering the shuttle box
has to overcome the resistance of the swell which acts on the finger connected to
the cricket bar, and the power required to overcome the friction of the swell
against the shuttle is considerable.
Now our Invention consists in the use of antifriction bowls fitting in the slots of
the shuttle box in the place of the swells, which bowls are mounted on the fingers
connected to the cricket bar, against which bowls the shuttle acts; by this means
the friction and the power required for propelling the shuttle are reduced, thereby
rendering the shuttle more durable and economising power.
The Invention may be modified by mounting the bowl on a stud in a lever jointed
to the back of the shuttle box; the end of this lever bears against a finger which is
acted upon by a short lever fixed to an upright cricket bar, moving in bearings
fixed to the back of the shuttle box; at the bottom of the cricket bar is a lever
which comes against the frog to stop the loom when the shuttle fails to box. When
the shuttle enters the shuttle box the bowl is pressed back, and the finger at
the bottom of the cricket bar then clears the frog and the loom continues its work.

page_text: Our Invention is particularly applicable to underpick looms, as by it the strain on
the picking levers is reduced; it is however applicable to looms of every description,
and the antifriction bowls instead of being mounted on the fingers of the cricket
bar may be applied in various other ways.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Walter Lord and George Jackson in the Great Seal Patent Office on the
30th November 1877.
WALTER LORD, of the Firm of Lord Brothers, of Todmorden, in the County of
York, Machine Makers, Cotton Spinners, and Manufacturers, and GEORGE JACKSON,
of the same Place, Manager. "CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING."
In looms of the ordinary construction the shuttle on entering the shuttle box has
to overcome the resistance of the swell which acts on the finger connected to the
cricket bar, and the power required to overcome the fiction of the swell against the
shuttle is considerable.
•
Now our Invention consists in the use of antifriction bowls fitting in the slots:
of the shuttle box in the place of the swells, which bowls are mounted on the
fingers connected to the cricket bar, or on levers jointed to the back of the
shuttle box against which bowls the shuttle acts; by this means the friction and
the power required for propelling the shuttle are reduced, thereby rendering the
shuttle more durable and economising power.
And in order that our Invention may be fully understood and readily carried
into operation, we will proceed to describe the accompanying Sheet of Drawings, in
which Fig. 1 is an end view of the lay and part of the side of a loom, to which our
improvements are applied. Fig. 2 is a front view, and Fig. 3 a plan of the same.
In these views a is the loom side, 6 the frog, c tlie lay bottom, and d the shuttle
boxes. To the right-hand shuttle box is jointed the lever e, in which is a slot for
the stud of the antifriction bowl f, which passes through a slot in the shuttle box
in lieu of the ordinary swell; the end of the lever e is pressed against the back of
the shuttle box by the double lever 'g, which is jointed to the back of the shuttle
.box, and one arm of this double lever is acted upon by the short lever h; fixed
to the upright shaft h¹, which is supported in bearings in the lay sword. At
the lower end of the shaft h¹ is the lever h², which, when the shuttle fails to box;
comes against the frog b, and stops the loom in the ordinary manner. The lever h³:
is acted upon by the spring h³.
To the left-hand shuttle box is jointed the lever j, in which is a slot for the stud
of the antifriction bowl k, and the end of this lever is pressed against the back of
the shuttle box by the lever 1, fixed to the upright shaft U, at the lower end of
which is the lever 12, connected by the strap m or other equivalent to the lever
h of the right-hand shaft h¹. The strap m dispenses with the usual stop rod
extending from one shuttle box to the other.
The mode of operation is as follows:-When the shuttle enters the left-hand
shuttle box it forces back the bowl k, thus causing the end of the lever to act on
the end of the lever 1, whereby the shaft is turned partly round, and the lever,
'acting on the strap m, moves the lever in the direction of the arrow in Fig. 3

page_text: until the end of the said lever is clear of the frog b, consequently the lay can beat
up without touching the frog. In like manner when the shuttle enters the right-
hand shuttle box, the bowl fis pressed back, and the end of the lever c, acting on
the double lever g, also moves the lever h³ out of the way of the frog. When the
shuttle fails to box, the lever h³ remains in the position shewn in Fig. 3, and when
the lay beats up, the frog is pushed back and the loom is stopped in the ordinary
manner.
Our Invention may be modified by mounting the bowls fand k on the fingers of
the ordinary horizontal cricket bar; this arrangement is applicable to existing
looms.
Having thus stated the nature of our Invention and described a convenient mode
of performing the same, we wish it to be understood that we do not intend to limit
ourselves to the details given, and we claim, the use of the antifriction bowls f
and k, and levers e and j, in lieu of the ordinary swells, also the double lever g, and
the short levers h, l, on the shafts 1, 1, supported in bearings fixed to the lay
swords and the levers 1, h³, connected by the strap m, or other equivalents in the
manner and for the purposes described.
In witness whereof, we, the said Walter Lord and George Jackson, have here-
unto set our hands and seals, this 28th day of November, One thousand
eight hundred and seventy-seven.
WALTER LORD.
(L.S.)
GEORGE JACKSON. (L.S.)