IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1884

page_text: We, CHARLES BEDFORD of Birstall, near Leeds in the County of York, Machine
Shop Manager and THOMAS KERSHAW of Birstall aforesaid Foreman Mechanic,
do hereby declare the nature of our invention for IMPROVEMENTS IN LOOMS
FOR WEAVING," (to be as follows) :-
"
The object of our Invention is to check the shuttle when it is sent "home" from
one shuttle box to the other, thereby avoiding sudden concussion, wear and tear
caused of the parts; and loosening of the weft on the bobbin.
Our Invention consists in the employment of the usual picking stud-plate
operated by mechanism hereinafter explained.
On the lathe sword we fix a cam, or inclined plate arranged so that at, each
backward movement of the lathe sword, the cam lifts a bowl on the end of a
horizontal bar or lever, such lever being supported at the opposite end by a spiral
spring. The middle part of the horizontal bar or lever is in contact with one end
of the picking stud-plate so that when the cam on the lathe sword operates the
horizontal lever, the picking stud-plate is moved on its fulcrum causing the picking
arm and picker to advance in the shuttle box to meet the shuttle when it enters
therein; the force of the shuttle against the picker causing the spiral spring
supporting one end of the horizontal bar to yield, consequently the picker recedes
backward, thereby avoiding concussion when the shuttle enters the box.
Instead of applying the cam to the lathe sword, it may be placed upon the crank
shaft, and caused to operate a lever in connection with the ordinary picking lever,
a spiral spring being employed to convey the motion to the picking lever which
yields, and gives way when the shuttle strikes the picker..
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page_text: We, CHARLES BEDFORD, of Birstall, Yorkshire, Machine Shop Manager and
THOMAS KERSHAW, of the same place, Foreman Mechanic, do hereby declare the
nature of our invention for "IMPROVEMENTS IN LOOMS FOR WEAVING," and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
The object of our invention is to check the shuttle when it is sent "home" from
one shuttle box to the other, thereby avoiding sudden concussion, wear and tear of
the parts, and loosening of the weft on the bobbin.
Our invention consists in the employment of the usual picking stud-plate
operated by mechanism hereinafter explained.
The first method we employ for operating the plate-stud, so as to cause the
picker to advance in the shuttle box to meet the shuttle is shown in Fig. 1, which
is end elevation of a loom having our improvements applied thereto. A is the
loom framing, B the crank shaft, and C the lathe sword on which is attached a
cam D forming part of our improvements, and employed for operating the lever E
as the slay moves backward and forward, the bowl a on the end of the said lever
resting on the surface of the cam, whilst the opposite end of the said lever is drawn
underneath the bracket F by spiral spring G, the said bracket forming a kind of
fulcrum for the lever to work against. H is the usual picking stud-plate, operated
in one direction by the rod I in the ordinary manner, and by the ordinary means,
and J is a spiral spring for operating said stud-plate in the opposite direction. It
must be understood that the point b of the stud-plate H rests upon the middle part
of the lever E (see Fig. 2) so that when the lathe sword has receeded from the
breast beam as shewn on the drawings, the cam D will have raised the lever to its
highest position, consequently the point 6 of the picking stud-plate which was
resting upon the level E will also be raised, the effect of which will be to cause the
shaft K to rock a little on its centre, thereby moving the picking stick L in such
manner as to cause the picker to advance and meet the shuttle as it enters the box
from the other end, the force of which shuttle against the picker will be sufficient
as to drive it back again, causing the point b of the stud-plate to force the lever E
downward, the spiral spring G giving way for that purpose; as soon however as
the upper part of the cam D is removed from the bowl a, the said spring G will
draw the lever against the bracket F allowing the bowl to drop into the hollow
part of the cam c, and remain there until the lathe sword returns, when the
operation is repeated each time the shuttle is sent across the loom.
The second method we employ for operating the stud-plate H is shewn in Fig 3,
which is end view of loom, shewing the opposite end to Fig 1. In this case the
cam D is placed upon the crank shaft B and made adjustable by slots and bolts d.
A bracket M. hinged at N is employed, carrying a finger O, the upper end of which
is forced into contact with the cam D by spiral spring e attached to the stationary
bracket P. The hinged bracket M also carries a vertical rod f surrounded by
compressed spring g, which forces the foot h of the said rod upon the ordinary
picking lever R operated as usual by picking tappit S rotating in contact with the
bowl carried by the said lever R. It will be seen that as the cam D revolves the
upper part of the finger O will be pushed outward, causing the bracket M to move
on its fulcrum N, consequently the foot h of the vertical rod fis forced upon the
lever R causing it to descend, in doing which the stud-plate H rocks the shaft K,
and as in previous case the picker is made to advance in the box to meet the

page_text: shuttle, the force of which sends the picker back again, the spiral spring 9 yielding
when the lever R is raised under the foot of the rod f, thereby softening or
breaking the force of the shuttle.
It will be seen by both methods herein shewn and described that the picker is
caused to advance to meet the shuttle, and that the mechanism which performs
such movement, will yield to the force of the shuttle as it meets the picker,
concussion which would be caused thereby is now avoided and the evils arising
through the sudden stoppage of the shuttle are prevented.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed we declare that
what we claim is,
Firstly. The employment of the cam D and lever E acting in contact with the
picking stud-plate, operated in manner and for purposes set forth in the first part
of this Specification.
Secondly. The employment of the lever or bracket M, rod f, and spiral spring g,
operated in manner and for purposes herein set forth in the second part of this
Specification.
Dated this 21st day of October 1884.
TASKER & CROSSLEY,
Patent Agents,
1, Commercial Street, Halifax,
Agents for the Applicants.