Improvements in Swivel Power Looms for Weaving Figured Goods.
Year: 1899

page_text: Date of Application, 7th June, 1899-Accepted, 22nd July, 1899
COMPLETE SPECIFICATION.
Improvements in Swivel Power Looms for Weaving Figured Goods.
We, WILLIAM TAYLOR BIRCHENOUGH, of the Firm of John Birchenough and
Sons, of Macclesfield, in the County of Chester, Silk Manufacturers, and AMOS
Wood, of the same place, Foreman 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:-
Our invention relates to improvements in swivel power looms for weaving
figured goods, such as described in Specification belonging to Letters l'atent
No. 23540 of 1893 and No. 5138 of 1896, the objects being to provide means
which render swivel looms positive and reliable in action and permit of running
such looms at a higher speed than heretofore has been possible thus increasing the
production.
To this end our invention embraces, firstly, improved means for horizontally
moving the swivel shuttles alternately from point to point or design to design,
and secondly, improved means for horizontally actuating the swivel shuttles and
raising and lowering the same.
And in order that our invention may be more fully understood we have caused
to be appended hereunto two sheets of drawings, marked with letters of reference
indicating like parts in the various figures.
Figs. 1&3, Sheet I, are side views and Figs. 2 & 4 respectively plans of the
loom sides and Fig. 5, Sheet II, is a front view and Fig. 6 a plan of an overpick
loom and Fig. 7 a detached front view of one end of an underpick loom constructed
in accordance with our invention.
Referring to the figures generally, a is the reed cap, the swivel shuttle race
slide, as usually rendered longitudinally adjustable on the reed cap and carrying
in front the vertically movable swivel shuttle race e containing the swivel shuttle
pinions and longitudinally reciprocated rack e by which the swivel shuttles are
reciprocated.
In carrying out the first part of our invention and referring to Figs. 1, 3, 4,
5 & 6, the chief feature of our improved swivel shuttle shunting motion consists
in the use of a design chain, through which and suitable positive connections the
swivel shuttles are displaced from point to point or design to design as follows;-
To the back of the ground shuttle box on the left side of the loom in a left
hand loom, we suitably pivot a bell crank lever f, the upper end of which is con-
nected by a rod to the swivel shuttle race slide band the lower end by means of
another rod to a rocking lever i fulcrumed to the lower part of the loom side
and connected by another rod k to the end of a lever carrying a bowl m acted
upon by a design chain carried and intermittently rotated by a barrel mounted
on a stud secured to the loom side and having at its inner side a star wheel 7.
This star wheel is intermittently rotated by a stud r on a stud wheels, mounted
upon a stud secured to the loom side. This spur wheel is in gear with a spur
pinion having a spur wheel on its side, both of which are secured upon the
crank shaft w and the latter rotated by a spur wheel secured upon the tappet
shaft

page_text: The stud wheels is placed under the influence of a spring z whereby the stud r
is moved out of the star wheel q when the latter is timed to be at rest, whilst a
lever, one end of which is connected to a hook in the jacquard and the other
furnished with a bowl 2, is adapted to bear against a cam face 3 formed on the
back of the wheels and thereby push the stud r into the star wheel
design chain barrel o requires rotating.
when the
The employment of the design chain and connections described, enables us
to shunt the swivel shuttles from point to point or design to design in one pick
any desired distance and thus produce designs which hitherto were impossible
to weave in power swivel looms.
In carrying out the second part of our invention and referring to Figs. 1, 2,
5 & 6, in the inventions hereinbefore referred to, the swivel shuttle rack e has been
horizontally reciprocated by means of two straps passing over pulleys, partially
rotated by levers and canis from the tappet shaft y.
In order to simplify and render the action of the swivel shuttles positive and
thus reliable, we dispense with the said straps, pulleys, levers and cams and
reciprocate the same by suitable positive connections from a crank pin disc,
eccentric or the like means having half a turn imparted for each pick of the swivel
shuttles by the ground and swivel shuttle motion employed in a left hand loom
at the right side in the following manner;-
To the front side of the swivel shuttle rack c, we pivot one end of a rod 4, the
other end of which is adjustably connected to a bell crank lever 5 suitably ful-
crumed to the swivel shuttle race slide b. This bell crank lever by means of
another rod 6, is connected to a rocking lever 7 fulcrumed to the lower part of
the loom side and connected by another rod S to a crank pin disc 9, eccentric or
the like, formed at the side of a pinion 10 mounted on a stud 11, secured to
the loom side.
The latter is intermittently rotated from the swivel shuttle motion, which
constructed and operating as follows, is greatly simplified and rendered positive
in action.
The swivel shuttle race c is in the usual way suspended by links 12 from two
levers 13 secured upon a shaft 14 mounted in bearings on the swivel shuttle race
slide b. The shaft 14 at the right end, is furnished with an arm 15 resting upon
an upright rod 16, suitably guided on the ground shuttle race and its lower end
secured to a lever 17, fulcrumed to the lower part of the loom side placed under
the influence of a spring 18. Upon the lever 17 is pivoted a slide 19 placed under
the influence of a spring 20 and adapted to be brought in the path of a cam 21
on the tappet shaft y when the swivel shuttle race is required to fall.
The inward movement of the slide 19 is controlled by a double armed lever 22,
fulcrumed to the loom side, and one end which bears against the said slide and
the other end being operated by the lateral displacement of a disc 23 mounted
upon a stud 24 and placed under the influence of a spring 25. The said disc has
on its inner side a spur wheel 26 gearing with and rotated by a pinion 27 fixed on
the crank shaft w which also carries the fly wheel 28 to which is connected by a
crank stud 29, the rod 30 which actuates the jacquard.
Below the crank shaft w is mounted upon a stud 31, a spur wheel 32 imparting
motion to the pinion 10 from which the horizontal movement for the swivel shuttles
is obtained.
The spur wheel 32 is formed with a star wheel 33 which is intermittently rotated
by a stud 34 on the spur wheel 26 when being brought in line with the star
wheel 33 by a lever 35 hinged to the loom side, which latter by a cord 36 and
lever 37 operated from the jacquard, is brought in and out of the path of a
cam 38 formed at the back of the spur wheel 26.
The ground shuttle motion which forms part of the swivel shuttle motion is
operated from the latter and constructed as follows;-
-
The spur wheel 26 has also a stud 39 at its back adapted to intermittently
rotate another star wheel 40 mounted on a stud 41 secured to the loom side. This

page_text: star wheel has at its back a cam 42 having four lifts, each adapted to raise the
lever 43 once, one end of which is fulcrumed to the side and the other by means
of a rod 44 connected to the lower end of a double armed lever 45, fulcrumed to
the back of the loom. The upper end of the latter, by means of a rod 46 is con-
nected to a bar 47, having at one end an arm 48 engaging in a groove 49, formed
in the boss of the picking motion cam 50 which latter is adapted to slide longi-
tudinally on the tappet shaft y and on studs 51 carried by a disc 52, secured to
the latter, so that each time the lever 43 is raised by the cam 42, the picking
motion cam 50 is brought underneath its bowl 53 and thus rendered operative
whilst when the lever 43 drops, the cam 42 is drawn from underneath the bowl 53
and thus rendered inoperative.
Our improvements described are also applicable to underpick looms in which
case however it is necessary to employ the lever 17, slide 19 and cam 21 inside the
loom frame as indicated in Fig. 7, in lieu of outside.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, wo declare that what
we claim is:-
1st. In swivel power looms for weaving figured goods, the employment of a
design chain rotated intermittently and through suitable positive connections
adapted to shunt the swivel shuttle race slide b from point to point or design to
design as required, all substantially as and for the purpose set forth.
2nd. In swivel power looms for weaving figured goods, the employment of a
crank pin disc 9, eccentric or the like means, having half a turn imparted for
cach swivel shuttle pick by the ground shuttle motion and by suitable positive
connections adapted to reciprocate the swivel shuttle rack e, all substantially as
set forth.
3rd. In a swivel power loom for weaving figured goods, constructed as specified
in the preceding claim, the combination of the spur wheel 26 continuously rotated
from the crank shaft w with the lever 22, actuated by the said spur wheel and
adapted to render the shuttle race lever 17 alternately inoperative for the purpose
of raising and lowering the swivel shuttle race, all substantially as set forth.
4th. This general combination and construction of parts constituting our
improvements and operating substantially as and for the purpose set forth.
Dated this 6th day of June 1899.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester,
Agents to Applicants.