IMPROVEMENTS IN SHUTTLE MOTIONS FOR LOOMS
Year: 1878

page_text: LETTERS PATENT to Alfred Vincent Newton, of the Office for Patents, 66,
Chancery Lane, in the County of Middlesex, Mechanical Draughtsman, for the
Invention of "IMPROVEMENTS IN SHUTTLE MOTIONS FOR LOOMS." A com-
'munication from abroad by the New York Silk Manufacturing Company
(Incorporated), of the City and State of New York, United States of
America.
aled the 15th April 1879, and dated the 24th October 1878.
PROVISIONAL SPECIFICATION left by the said Alfred Vincent Newton at
the Office of the Commissioners of Patents on the 24th October 1878.
ALFRED VINCENT NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Mechanical Draughtsman. "IMPROVEMENTS IN SHUTTLE
MOTIONS FOR LOOMS." [A communication from abroad by the New York Silk
Manufacturing Company (Incorporated), of the City and State of New York, United
States of America.]
This Invention more particularly relates to shuttle motions for narrow ware looms,
but it is also applicable to the shuttle motions of other looms, in which the shuttle
is carried or driven by a carrier or driver having a positive rectilinear motion.
The Invention consists in a combination with a shuttle carrier or driver and a lever
connected therewith for imparting motion thereto of an oscillating fulcrum yoke,
through or within which the said lever has a longitudinal motion, and whereby
said lever at its connection with the said carrier or driver is caused to move in a
right line. Furthermore, the Invention consists in a certain combination with the
shuttle carrier or driver and a lever connected therewith for imparting motion
thereto of a crank having a sliding connection with said lever, whereby the latter
and the shuttle carrier or driver are caused to move more rapidly at and near the
middle of the stroke than at the commencement and termination thereof, and the
starting and stopping of the shuttle is gradual. Likewise, the Invention consists in
a combination with the shuttle carrier or driver of a shuttle motion, driving cam,

page_text: a lever actuated by said cam, a rod attached at its one end to said lever, a slide to
which said rod is pivoted at its opposite end, a lever for imparting motion to the
shuttle carrier or driver constructed with a longitudinal slot for reception of said
slide, an oscillating fulcrum through which such lever has a longitudinal motion,
and a crank connected with the slide, the whole forming a smooth and efficient
shuttle driving motion: Again, the Invention consists in a combination of a rotating
cam, a lever actuated by said cam, a rod or connection attached to said lever, and
serving to vibrate a compound lever formed of separate members fitted to slide
one in, upon, or along the other, and a rectilinearly moving shuttle carrier or
-driver-actuated_by_said compound lever. Also, in combination with a rectilinearly-
moving shuttle carrier of duplicate fingers for engaging with- the- shuttle, and a
rail having a cam slot for alternately raising and lowering said fingers, and along
which the shuttle-carrier-is-guided by means of rollers or wheels attached to the
latter.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Alfred Vincent Newton in the Great Seal Patent Office on the 24th
April 1879.
ALFRED VINCENT NEWTON, of the Office for Patents, 60, Chancery Lane, in the
County of Middlesex, Mechanical Draughtsman. "IMPROVEMENTS IN SHUTTLE
MOTIONS FOR LOOMS." A communication from abroad by the New York Silk
Manufacturing Company (Incorporated), of the City and State of New York, United
States of America.
This Invention more particularly relates to shuttle motions for narrow ware
looms, but is also applicable to the shuttle motions of other looms, in which the
shuttle is carried or driven by a carrier or driver having a positive rectilinear
motion. The Invention consists in a combination with a shuttle carrier or driver
and a lever connected therewith for imparting motion thereto of an oscillating
fulcrum yoke, through or within which the said lever has a longitudinal motion, and
whereby said lever at its connection with the said carrier or driver is caused to
move in a right line. Furthermore, the Invention consists in a certain combination
with the shuttle carrier or driver and a lever connected therewith for imparting
thereto of a crank having a sliding connection with said lever, whereby the
latter and the shuttle carrier or driver are caused to move more rapidly at and near
the middle of the stroke than at the commencement and termination thereof, and
the starting and stopping of the shuttle is gradual. Likewise, the Invention
consists in a combination with the shuttle carrier or driver of a shuttle motion,
driving cam, a lever actuated by said cam, a rod attached at its one end to said
lever, a slide to which said rod is pivotted at its opposite end, a lever for imparting
motion to the shuttle carrier or driver constructed with a longitudinal slot for
reception of said slide, an oscillating fulcrum through which such lever has a longi-
tudinal motion, and a crank connected with the slide, the whole forming a smooth
and efficient shuttle driving motion.
Having thus specified the object or objects and nature of the Invention, its
description will be proceeded with in reference to the accompanying Drawing.
Fig. 1 is an inverted plan view of a shuttle motion constructed in accordance
with the Invention, and in which the lever that actuates the shuttle carrier or
driver has a longitudinal motion through an oscillating fulcrum; Fig. 2 is a vertical
section of the same at right angles to the line of motion of the shuttle, and shewing
a crank which has, a sliding connection with the lever that actuates the shuttle
carrier or driver for giving a slower motion to the shuttle at stopping and starting
than at the intermediate portion of its stroke; and Fig. 3 is an inverted plan view
of said lever and its immediate appurtenances.
Referring to Figures 1, 2, and 3 of the Drawings, A. is the shuttle carrier or
driver represented as furnished with rollers a, a, running upon a straight guide
rail B on the loom framing. This shuttle carrier or driver may be provided with
sliding fingers for moving the shuttle in opposite directions, free from contact with
the warp as the shuttle passes through the shed, or it may be of any known or
suitable construction. C is the lever for giving the said carrier or driver its motion
back and forth. This lever is represented as being moved horizontally by means of
a rod D which connects it with a lever E actuated by a cam F on the shaft G of
the loom. The said lever is connected at its front end with the carrier or driver A
by means of a pin b, but instead of having a fixed fulcrum at its rear end its rear
portion is fitted to slide longitudinally back and forth through an oscillating ful-
crum yoke H which is pivotted by a fulcrum pin c into a hanger I which is secured
to the loom framing, the said yoke being free to oscillate with the lever on the
fulcrum pin c as motion is imparted to the lever. The movement of the carrier or
driver being confined to a straight part by the straight guide B on which it runs,
and the lever C being connected at its front end with the carrier or driver in such

page_text: manner as to be compelled to move in a corresponding straight path or course the
rear portion of the lever has to move longitudinally through the yoke H and make
it accommodate itself to the varying distance between the pin and the fulcrum
pin c.
In order to render this movement easy, antifriction rollers d, d, are fitted to the
yoke, but these rollers might be dispensed with. The rod D is connected with the
lever C by means of a pivot or pine which is secured in a slide J which is fitted to
slide lengthwise of the lever C in a slot ƒ provided in the said lever, and the same
pivot or pin e connects the said rod and slide with a crank K, which is pivotted by
a-pin-g-to-the-loom framing. This crank K does not assist in transmitting motion
to the shuttle carrier or driver, but controls or regulates the motion thereof in the
following manner:-The pivot or pin e which connects the lever C with the rod D
being compelled-by-the-said-crank_to_move in the arc of a circle shewn in dotted
lines in Figures 1 and 3 has the effect of varying the velocity of-the-motion-of-the-
lever C and of the shuttle carrier or driver in such manner that said velocity is less
in the earliest and later portions of the stroke of the latter when the position of the
crank is at a greater angle to the lever C, and becomes greater when the position of
the said crank approximates to a position in line with the said lever. By this means
there is less resistance to the starting of the shuttle, and the momentum of the
shuttle and its carrier is more easily arrested at the termination of their stroke than
if the rod D were directly connected with the lever, and the shuttle is caused to
move faster while in the warp. Moreover, by the action of the crank, the slide J
and rod D are caused, when the shuttle carrier or driver has arrived at either end
of its stroke, to be further from the fulcrum of the lever C and nearer to the shuttle
carrier or driver so as the better to brace the lever in such position.
Having now set forth the nature of the Invention of "Improvements in Shuttle
Motions for Looms" as cominunicated to me from abroad, and explained the manner
of carrying the same into effect, I wish it to be understood that under the above in
part recited Letters Patent I claim,―
First. The combination with a shuttle carrier or driver and a lever connected
there with for imparting motion thereto of au oscillating fulcrum yoke, through or
within which the said lever has a longitudinal motion, substantially as and for the
purpose herein described.
Secondly. The combination with a shuttle carrier or driver and a lever connected
therewith for imparting motion thereto of a crank having a sliding connection with
said lever for the purpose of varying the velocity of the motion of the said lever
and shuttle carrier or driver in different parts of the stroke thereof, substantially
as herein described.
Thirdly. The combination with the shuttle carrier or driver of the lever C, rod D,
cam F, lever E, pivot e, slide J, crank K, and oscillating fulcrum yoke H, substan-
tially as described and shewn in the Drawing, for the purpose set forth.
"
In witness whereof, I, the said Alfred Vincent Newton, have hereunto set
my hand and seal, the Twenty-fourth day of April, in the year of our Lord
One thousand eight hundred and seventy-nine..