Improvements in Apparatus for Letting off the Warp in Looms for Weaving.
Year: 1887

page_text: Date of Application, 8th June, 1887.
.Complete Left, 6th Aug., 1887.
Complete Accepted, 6th Sept., 1887.
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Letting off the Warp in Looms for
Weaving.
We, BENJAMIN CLIFFORD SYKES M.D. of St. John's House, Cleckheaton in the
County of York, and GEORGE BLAMIRES of Cleckheaton aforesaid, Engineer do hereby
declare the nature of this invention to be as follows:-
This invention relates to mechanism for purpose aforesaid and consists of an
improved construction and combination of parts which automatically adjusts and
controls the delivery of warp to the changing diameter of the beam.
Apparatus for purpose aforesaid according to this our invention, comprises a shaft
extending from front to back of the loom and by preference within the end frame.
One end of the shaft carries a worm gearing with and driving a worm wheel on the
end of the warp beam as ordinary. Motion is given to the shaft and worm, from the
picking tappet, in outer face of which is a slot; within the slot is received and held
one end of a connecting rod.
The boss of a bracket fixed to the end frame of the loom carries a short shaft, on
one end of which is a bevel wheel, and cast or fixed to the other end of the shaft is a
disc, enclosed by the segmental part of two arms, which together form a rocking
crank, there being a space or slot longitudinally between the two arms.
Within the slot is a screwed or chased spindle, or shaft, on upper end of which is a
boss, and worm wheel, gearing with a worin carried by bracket or lug on one of the
two arms first mentioned, and on the worm shaft is a rachet wheel. The other end
of the connecting rod from the tappet is by nut attached to the screwed spindle.
The rocking crank carries a pair of dogs of L shape, the upper ends being
connected by spiral spring; the lower arms clip the disc above referred to.
The action is as follows:-
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At each revolution of the tappet half its movement will by the connecting rod give
a partial rotation or turn to the rocking crank, whereon the dogs" will (their
gripping ends being slightly above their centre of motion) grip the disc, giving to the
atter, to its shaft, and to the bevel wheel thereon a corresponding but reduced motion,
and as the bevel wheel gears with a like bevel clutch box wheel on the worm shaft,
he latter, and worm, are turned and so give motion to the warp beam. The same

page_text: movement of the rocking crank will have carried the rachet wheel against a pawl or
catch piece attached to the end of the framing of the loom, the rachet wheel will
thereby be turned, operating the worm on the rachets shaft or axis, the worm
operating its worm wheel on the screwed spindle which will thereby be moved-and
so the end of the connecting rod will approach nearer the rocking crank's centre
therefore as the beam is reduced in diameter by withdrawal of warp therefrom, the
connecting rod is gradually changing its effective action on the rocking crank, to
correspond. On the other half rotation of the tappet, the dogs slacken their grips on
the disc, and the rocking crank is returned to its original position ready to again
move forward, and operate as described. The slot in the tappet enables the end of
the connecting rod to be adjusted in relation to the centre of tappet thereby to adjust
the amount of movement of the rocking crank according to requirement or weaving.
The clutch box permits reversal or turning back the beam.
T : 1
1007
WALTER BRIERLEY,
Town Hall Buildings, Halifax,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Letting off the Warp in Looms for
Weaving.
We BENJAMIN CLIFFORD SYKES of St. John's House, Cleckheaton in the County of
York, and GEORGE BLAMIRES of Cleckheaton, aforesaid, Engineer, do hereby declare
the nature of this invention and in what manner the same is to be performed, to he
particularly described and ascertained in and by the following statement:-
This invention relates to mechanism for purpose aforesaid, and consists of an
improved construction and combination of parts which automatically adjusts and
controls the delivery of warp to the changing diameter of the beam.
Apparatus for purpose aforesaid according to this our invention comprises a shaft
extending from front to back of the loom and by preference within the end frame.
One end of the shaft carries a worm gearing with and driving a worm wheel on the
end of the warp beam as ordinary.
Motion is given to the shaft, and worm from the picking tappet, in outer face of
which is a slot, within the slot is received and held one end of a connecting rod.
The boss of a bracket fixed to the end frame of the loom carries a short shaft on one
end of which is a bevel wheel, and cast or fixed to the other end of the shaft is a dise
enclosed by the segmental part of two arms which together form a rocking crank,
there being a space or slot longitudinally between the two arms.
Within the slot is a screwed or chased spindle or shaft on upper end of which is a
boss and worm wheel gearing with a worm carried by bracket or lug on one of the

page_text: two arms first mentioned and on the worm shaft is a rachet wheel. The other end of
the connecting rod from the tappet is by nut or cross head attached to the screwed
spindle.
The rocking crank carries a pair of "dogs" of L shape, the upper ends being
connected by spiral spring, the lower arms clip the disc above referred to.
The action is as follows:-
At each revolution of the tappet half its movement will, by the connecting rod give
a partial rotation or turn to the rocking crank whereon the "dogs" will (their gripping
ends being slightly above their centre of motion) grip the disc giving to the latter, to
its shaft, and to the bevel wheel thereon a corresponding but reduced motion, and as
the bevel wheel gears with another bevel wheel on the worm shaft the latter and worm
are turned, and so give motion to the warp beam. The same movement of the rocking
crank will have carried the rachet wheel against a pawl or catch piece attached to the
end of the framing of the loom, or attached to under part of the slay beam, the rachet
wheel will thereby be turned operating the worm on the rachet shaft or axis, the
worm operating its worm wheel on the screwed spindle which will thereby be moved
and so the end of the connecting rod will approach nearer the rocking crank's centre
therefore as the beam is reduced in diameter by withdrawal of warp therefrom, the
connecting rod is gradually changing its effective action on the rocking crank to
correspond. On the other half rotation of the tappet, the dogs do not grip the disc,
and the rocking crank is returned to its original position, ready, to again move
forward and operate as described.
The slot in the tappet enables the end of the connecting rod to be adjusted in
relation to the centre of the tappet thereby to adjust the amount of movement of the
rocking crank according to requirements or weaving.
Such being the nature and object of this our invention, the following is a complete
description of same reference being had to the accompanying drawings in which
Fig. 1. is an end view of part of loom framing having our improvements applied
thereto.
Fig. 2. is a plan view (partly in section) of fig. 1.
Fig. 3. is a front elevation of the rocking crank drawn about full size.
Fig. 4. is an edge view of fig. 3.
Fig. 5. is a view of the dogs and disc.
The remaining figures are of the parts detached, in order to clearly illustrate
construction thereof, all being drawn about full size.
At 1 is the boss of a bracket 2, fixed to the end frame 3, of the loom and carrying a
short shaft 4, on one end of which is a bevel wheel 5, and cast or fixed to the other
end of the shaft 4 is a disc 6 enclosed by the segmental part of two arms 7. 7. which
together form a rocking crank there being also a space or slot 8, longitudinally
between the two arms. Within the slot 8 is a screwed or chased spindle or shaft. 9,
on upper end of which is a boss 10, and worm wheel 11 gearing with a worm 12,
carried by a bracket or lug 13. on the two arms 7. 7. and on a worm shaft 14 is a
rachet wheel 15, the end of a connecting rod 16 extending from the tappet 17 is by
nut or crosshead 18 connected with the screwed spindle 9, the rocking crank 7, carries
a pair of dogs 19, 20, of L shape the upper ends being connected by spiral spring 21.
which causes the lower arms to clip the disc 6 between them. The action is as
follows:-
At each half revolution of the tappet 17 the connecting rod 16 will give a partial
rotation or radius motion, to the crank 7. whereon the dogs 19, 20, will close up and
grip the disc 6 between them giving to the disc and to the shaft 4 on which the disc is
fast, and to the bevel wheel 5 on the said shaft 4 partial rotation and as the wheel 5
gears with the wheel 5' on the worm shaft 22, the latter and worm 23 are turned, and
by the ordinary worm 23 and worm wheel 23 on the axis of the warp beam 24 the
latter receives motion and gives off the required quantity of warp.
The same movement of the rocking crank 7 will have carried the rachet wheel 15
forward and at intervals into contact with a stud 25 in the duplicate catch wheel 26,
the wheel 26 at each beat up movement of the slay beam 27 is caught and moved

page_text: forwards one tooth by the pawl 28 so that at every complete revolution of the
wheel 26 the stud 25 is in such position that when the catch wheel 15 is brought
forwards as described by the forward movement of the part 7 and in contact with the
said stud 25, the wheel 15 receives partial rotation and turns the worm 14, wheel 11,
and the latter turns the screw 9 thereby gradually lowering the nut or cross head 18
nearer to the centre 4 and inasmuch as the amount of motion of the connecting rod 16
is uniform, the action or radial movement of the rocking crank 7 will by the screwing
down by 9 of the end 18 of the connecting rod 16 be proportionately increased
giving increased motion through the connecting gear and shaft 5, 5'-22. worm and
worm wheel 23, 234 to the warp beam 24, such compensating movement maintaining
an uniform delivery of warp from the beam notwithstanding the gradual reduction in
diameter thereof as the warp is withdrawn therefrom. On the other half rotation of
the tappet 17 the crank 7 is making its return radius movement but as the dogs 19. 20.
do not grip the disc the crank 7 becomes loose and moves back loosely on the disc 6,
and centre 4 leaving all the gear and letting off appliances stationary until another
forward movement of the crank 7 whereon the dogs again grip the disc and the crank
is again "fast" and operates through the disc and gear on the beam as described.
The tappet 17 is provided with a slot 29 in which the end 30 of the rod 16 can be
adjusted as desired.
On reference to the enlarged drawings it will be seen that the rocking crank 7 is
made in two parts or halves so as to admit of the introduction of the disc 6 to their
interior. The lug 13 is hinged or pivoted on a pin 33 in order that the lug and its
worm 12 may be moved clear of the worm wheel 11 as shewn by dotted lines thereby
to permit of the expeditious reversal of the screw 9 for purpose of bringing up the
nut 18 and end of the connecting rod 16 to the top of the slot 18 when a new or full
beam is being applied to the loom.
Referring to Fig. 5 which is a full sized view of the dogs and disc in position, we
would observe that we have found in practice that the nipping ends of the dogs 6 do
not require shoeing but for some special uses the nipping and contact ends may
require to be composed of or enclosed by a material other than iron such as wood,
brass, or soft metal.
The spring 21 when released at one of its ends leaves the disc 6 free from the
gripping power of the dogs whereon the shaft 22 can be readily turned by the hand
wheel 32 for the purpose of winding or letting back the warp and beam 24.
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 :-
The improved construction, combination, and arrangement of mechanism, wherein
is comprised the connecting rod such as 16, the dogs 19, 20, disc 6, rocking crank 7,
catch wheel 15, worm 12, worm wheel 11 and screw 9 whereby the automatic adjust-
ment of the connecting rod is effected and the uniform delivery of warp is ensured
and as such mechanism is hercin fully described and illustrated by annexed drawings.
Dated this 2nd day of August 1887.
WALTER BRIERLEY,
Town Hall Buildings, Halifax,
Agent for the Applicants.