Improvements in Positive Shuttle Motions for Looms.
Year: 1893

page_text: Date of Application, 29th Aug., 1893-Accepted, 14th Oct., 1893
COMPLETE SPECIFICATION.
[Communicated from abroad by EDMUND HUGH GRAHAM, of Number 120, South
Street, Biddeford, in the County of York and State of Maine, United States
of America, Machinist.]
Improvements in Positive Shuttle Motions for Looms.
I, HENRY HARRIS LAKE, of the Firm of Haseltine Lake & Co., Patent Agents,
15 Southampton Buildings, in the County of Middlesex, 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:-
This invention relates to positive shuttle-motions for looms; and it is intended
to be an improvement upon the invention illustrated and described in Letters Patent
of the United States No. 474,555 May 10th 1892.
My present invention has for its principal object to perfect and render more
efficient and practical the positive motion of the shuttle and the mechanism for
producing the same, and it consists in the novel construction, arrangement and
combination of parts hereinafter described.
The invention is illustrated in the accompanying drawings, in which
Figure 1 is an end elevation of parts of a loom which relate to and embody my
invention.
Figure 2 is a front elevation, portions of the frame being shown in section.
Figure 3 is an enlarged sectional view, taken vertically and centrally with the
parts in the position shown in Figure 2.
Figure 4 is an enlarged detail in elevation, showing the shuttle, carrier, &c.
portions being represented as broken away.
Figure 5 is an enlarged detail in plan of the shuttle, a part having been broken
out to show the method of supporting the cop-spindle and
Figure 6 is a sectional detail on line a x of Figure 1.
Similar letters of reference indicate like parts in the several figures.
A represents the frame of the loom, B the lay-swords and C the lay proper or
lower rail of the lay. D is the upper rail supported by the extensions or standards c
(Figures 2 and 3). e is the reed secured in its usual position, the threads of the
warp running between the rails C and D and through said reed. E is the shuttle
which runs between the two rails and is guided at its top by a row of pins d, which
project downward from the under side of a guide-bar D₁ adjustably secured at d¹
to the upper rail. The pins d are replaced at the ends of the lay by tongues d³,
which are secured to the lower edge of the guide-bar D¹, in a line with the pins,
and both pins and tongues enter a groove (Figure 3) in the upper side of the
shuttle as it moves along.
The shuttle is not mounted on rolls, as shown in the Patent above referred to,
but is provided centrally with a pinion f whose arbor is supported by the shuttle
(Figures 4 and 5), said pinion being in engagement with the rack g secured to the
lower rail C. Thus the shuttle is driven from the centre without the use of rolls,
adding to its simplicity, efficiency, and ease of running. F is the cop in position
on the shuttle-spindle Fí.
pro-
H is the traveller which imparts motion to the shuttle by means of a central
depression or hole in its upper side into which space the pinion f extends, so that as
the traveller moves, it pushes the shuttle with it by means of the pinion which
extends into the said cavity. The traveller is provided with a dovetailed
jection H' sliding in a corresponding groove C'in the lower rail. Secured centrally
to the face of the traveller is a screw or pin I sufficient of whose shank is left
exposed to allow the rope or chain I to be secured thereto. This rope has one end
secured to the hook h projecting from the lay, and it extends from said hook around

page_text: the pulley J in the block K, thence to and around the pulley J¹ supported by the
lay, thence to the traveller to which it is secured as above mentioned by the
screw I, thence to and around the pulley J2 supported by the lay, thence to and
around the pulley J in the block K, and thence to the hook 2 to which its opposite
end is secured. See Figures 2 and 3. The block K slides horizontally by means
of the rib K¹ in a suitable groove in the underside of the lower rail C, and, by
means of its perforated lower extension K2 on a horizontal rod 7 supported by the
lay-swords B. The lower ends of the lay-swords are fast on the rocker-shaft L,
and pivotally secured by means of a stud to the same shaft is the lower end of the
swinging lever whose upper end is connected to the sliding block K by a
link 12.
An horizontal connecting rod L³ connects by means of a ball and socket swivel,
the lever with the ball and socket joint L2 on the crank L³, (Figures 1 and 2)
integral with the bevel gear N on the post n extending from and surrounding the
shaft L, said gear N (Figures 1, 2, and 6) engaging with the bevel gear N¹ loose
on the rocker-shaft L. Integral with the bevel gear N¹ is the sprocket wheel N²,
loose on the same shaft L, and connected by the chain m with the sprocket
wheel m', fast on the stud P¹ having its bearings in the frame. Fast on the same
stud is the elliptical gear R which is in engagement with the eccentric gear S fast
on the driving shaft P. As the lay, lay-swords etc. are vibrated together by the
crank T on the crank shaft T¹ (Figure 1), the traveller, carrying the shuttle, is
moved back and forth by the cord or chain I twice with each movement back and
forth of the sliding block K, which is actuated by the link 12, lever 1, connecting
rod L, crank L³, bevel gears, sprocket wheels, and elliptic and eccentric gears.
The elliptical gear serves to slacken or suspend the motion of the traveller at the
ends of the stroke and reverse it gradually so as to enable the loom to run with
greater speed.
It will readily be seen that the shuttle is practically supported, steadied, and
held in its position by the pinion f, and by the guide pins & and guides d².
The threads V V₁ pass between the pins d and between the teeth of the
rack g.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1. In a positive shuttle motion for looms, the combination of the shuttle
supported and steadied at three points only, a pinion supporting it at one point
said pinion being located at the centre of the under side of said shuttle, the lower
rail, a rack on the lower rail engaging said pinion, the upper rail, guides and
guide-pins supporting and steadying the shuttle on its upper side, said guides and
pins being secured to the upper rail, and a traveller having a depression in which
the said pinion rests whereby the shuttle is driven without the
substantially as set forth.
use of rolls,
2. In a positive shuttle motion for looms, the combination of the shuttle pro-
vided with a longitudinal groove on its upper side, the pinion having its bearings
in said shuttle centrally near the under side, the lower rail, the rack 9 on the lower
rail engaging said pinion, the traveller or carrier carrying the shuttle, the upper
rail, the guide bar D' secured to the upper rail, and guide-pins d extending
downward from said guide-bar, substantially as described.
3. In a positive shuttle motion for looms, the combination of a pair of rails
between which the warp extends, a guide for the shuttle secured to the upper rail,
a shuttle reciprocated between said rails, a pinion secured centrally to said shuttle,
a rack secured to the lower rail, and a traveller provided on its upper side with a
recess or concavity fitting said pinion whereby horizontal motion is imparted
thereto and thence to the shuttle, substantially as set forth.
4. The combination of the lay, the lower rail, the carrier or traveller H sliding
in the lower rail, the sliding block K sliding in a groove in the lower rail and on a

page_text: horizontal rod supported by the lay-swords, pulleys J J³ in said block, pulleys J1 J¹
supported by the lay at opposite ends thereof, a cord fastened to the traveller and
passing around said pulleys and with its ends secured to the lower rail, link
connecting the block and the lever 1, lever pivotally secured to said link and
the rocker shaft L, crank L³, connecting rod L' having ball and socket connections
with the lever and crank L³, the bevel gear N integral with the crank and
loose on the post n, bevel gear N¹ loose on the rocker shaft and engaging with
the gear N, sprocket wheel N integral with the gear N', stud P1, and elliptical
gear R and eccentric gear S in engagement with the elliptical gear and fast on
said shaft P, substantially as described.
Dated this 20th day of August. 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.