Year: 1897

page_text: Date of Application, 5th, Mar., 1897-Accepted, 5th June, 1897
We, DANIEL MUNSON SEATON, Lawyer, and JOHN AMBROSE LEDDEN,
Merchant, both of 24 Montgomery Street, City and County of San Francisco,
State of California, United States of America, 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 improvements in cloth weaving looms and more
particularly to that portion of the mechanism of same by means of which the filling
thread is laid in.
In the drawings:
Fig. 1, is a front view of the invention as applied to the lay of a loom.
Fig. 2, is a rear view of the same.
Fig. 3, is a detail of the shuttle driving mechanism.
Fig. 4, is a plan view of the same.
Fig. 5, is a detail view of the advancing mechanism.
Fig. 6, is a cross-section of the same.
Fig. 7, is a detail view of the shuttle operating mechanism.
Fig. 8, is a detail view in plan of the shuttle, being partly cut away to show the.
construction of the jaws.
Figs. 9 and 10, are details of the measuring device.
To lay in the filling thread by this invention it has to be prepared by forming it
into threads of the desired length, as it is laid in. For this purpose the feeding
mechanism, B, is designed. This consists in devices to present the two ends of
the lengths of thread to a carrying mechanism, in devices to measure the lengths
and in devices for cutting the thread when so measured.
The first of these devices, that to present the ends of the thread to the carrying
mechanism, consists of the plate, B', pivotally mounted in bearing, B², provided in
the brackets, B³, at either end of the lay of the loom. The plate, B₁, is provided
in the outer, or free, edge with the openings, B4, and B. To grasp the thread the
plates, B', are provided on their face with a hinged jaw which has openings in
the outer edge corresponding with B and B, of the plate B'. To regulate the
position of the thread in crossing the openings, B, B, pins are provided in the
plate B¹, to receive the thread when the jaw is opened and the plate raised for a
renewed grasp on the thread..
The plates, B', and their attachments are in every respect the same at both ends
of the lay. The only difference which exists in the different sets is in the time of
their operation, this being arranged so that the position of the plate, B¹, and its
attachments on the side shall be successively duplicated on the other.
In order that the lengths of thread may be uniform, there has been provided a
measuring device, by means of which the threads are measured off the exact
lengths before being cut by the cutting devices on the plates B¹. This measuring
device consists of the thread receptacle comprised in its present form of the
tubes, B and B, slotted lengthwise. These tubes are mounted perpendicularly
under and slightly forward of the plate, B1, with their slots facing each other. To
measure the thread it is caught from above by the pivoted arm, B, which extends
outward from the rod, B18, as the same is depressed. The depression of the
arm, B, occurs as the shuttle, having taken the thread from the opening, B*,
Price 8.1
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page_text: starts across the lay. The arm, B", is forced down between the tubes, B1,
and B16, carrying the thread which has been spread across the mouth of the tubes,
down into them. The thread remains in the tubes until drawn out by the flight of
the shuttle.
To overcome any tendency to drag or produce friction and tension on the thread,
the arm, B, is provided with a small roller, which strikes over and upon the
thread. The small arm, B, is mounted on the end of a rod, B18, which is
enfolded by a tube, B, to which the reciprocating mechanism of the measuring
device is attached. The object of this construction is to raise and lower the small
arm with its roller to and from a perpendicular position. The perpendicular
position is attained when the device has reached the bottom of the downward
movement. At this point the inner rod, B18, strikes upon the end of the screw, B2,
at the bottom of the runway between the receptacle rods. It is by means of
this screw that the measuring may be regulated, as by raising or lowering the
end of the screw, the raising of the small arm, B, is caused at a greater or lesser
depth between the receptacle tubes.
When the inner rod, B18, strikes the screw, as described, its movement is arrested,
while the tube, B1, continues to descend. At the top of the tube, B¹³, there is
provided a notch, B2, which is designed to receive a pin, B, on the end of the
small arm which is pivoted at 123, to the inner rod. When now the inner rod
arrested and the tube continues to descend, the small arm is rotated to a perpen-
dicular position by the notched tube pulling on the pin, B.
In this position
the rod and the tube rise to the highest position, the small arm and roller rising to
one side of the thread. On reaching the top the roller passes a small spring pawl,
displacing it, which, when the rod descends strikes under the roller and throws it
and the small arm forward to the position shown at Fig. 10, and extending the
pin, B2, into the notch, B2, of the outer tube. This action carries the roller
over the thread in position to depress and measure the same, which it does as the
device is depressed.
The inner rod and outer tube are restrained from any independent movement by
a flat spring, which is attached to the one and bears against the other.
The shuttle, which has been several times mentioned above, forms the principal
feature of the carrying mechanism, A, by which the short lengths of filling thread
are laid into the warp of the fabric. This shuttle is shown in detail at Fig. 8, of
drawings.
.
It consists of a flat thin body, formed as light as consistent with the work to be
performed. At both ends it is provided with nipper jaws which are normally
closed by a spring. The one of these jaws, A¹, is made stationary and integral
with the frame of the body, while the other is pivotally mounted on the frame of
the other. They are normally held together by a spring, A, as shown at Fig. 8.
The pivotally mounted jaw has an extension, A3, on which is mounted a small
friction roller, A. It is by means of this extension that the jaws are opened to
receive the thread when driven from end to end of the lay.
The mechanism for opening the jaws at the proper time is illustrated at Fig. 7 of
the drawings. It consists of two heads or cams, A5, which are separated the
proper distance apart, to operate upon the extension, A³, of the pivoted jaws of
the shuttle at the proper intervals. The heads are raised and lowered into and out
of the path of the said extensions. This is accomplished after the forward
extension has passed the inner head, or head nearest the fabric. In this position,
as described bereafter, the shuttle is arrested, and while so arrested the heads, A,
are raised into position. The mechanism for raising and lowering the heads consists
in a shaft, A, mounted within a hollow formed in the lay. Mounted on this shaft
are three small pinions which are geared with rack bars, A'. On the extreme rack.
bars are mounted the heads. These rack bars are mounted in guides, and the
centre one is provided with a downward extension, A8, which engages a cam slot in
the face of a wheel mounted on the driving shaft of this invention. This cam slot
is so constructed as to produce, at the instant the shuttle is brought to a stop, a

page_text: rise of the extension, A8, and the rack bar connected therewith. The movement of
the rack bar rotates the shaft and the extreme pinions, which raise the extreme:
rack bars carrying the heads. In this position the heads stand in the path of the
extensions of the pivoted jaws on the shuttle, that is to say, the outside head stands:
in the path of the forward jaw extension, and the inside head stands in the path of:
the inside jaw extension.
From this arrested position the shuttle is moved slowly forward the short
distance needed to advance the jaws into the openings of the feeding mechanism to
grasp the thread, and also. to release the thread already being carried to deposit:
the end of the same in the selvidge of the cloth being manufactured. For this
purpose there is provided an advancing mechanism which will strike the shuttle
from behind and advance it the required distance. This mechanism consists in a
bell crank lever E which is spring actuated to raise one of its arms above the
surface of the lay to the rear of the arrested shuttle when permitted; and a
lever E, the end of which is actuated by a cam wheel on the driving shaft and..
attached to a slide E2, on which the said bell crank is mounted, to advance and
recede the said slide at the proper intervals, or when the shuttle has been so
arrested. The slide E2 and bell crank E are mounted in a box E³ under the
surface of the lay, which has an elongated slot E into and through which the arm
of the bell crank is extended as advanced. At the rear of the box the slot is
discontinued to form an upper wall E, under which the arm of the bell crank
is compelled to recede as the same is drawn back, and thereby leave a clear way.
for the return flight of the shuttle. In operation this mechanism advances the..
shuttle to its destination and then rapidly recedes.
The driving mechanism for the shuttle resembles closely the ordinary picker-
stick mechanism. The driving mechanism of the picker-stick is the same as that
ordinarily employed. The difference between the present mechanism and the
ordinary picker-stick is that, where the ordinary picker-stick is allowed to fall.
away and advances to strike a blow on the shuttle to drive it across the lay, this.
remains in position against the shuttle and throws it by the spring of the parts,
when released, across the lay. For this purpose it is provided with the finger, C², .
which is extended up from the carriage, C¹, on the side of the lay, across the top,.
in the path of the shuttle. The carriage, C1, is mounted on guide rods, C³, on
the side of the lay to obtain a straight forward movement in throwing the shuttle..
To the carriage the picker-stick is attached by the link, C, to allow for the arc of
the movement of the picker-stick.
On the return of the picker-stick it is arrested and held in position by a small.
bolt, C³, which is extended from the bottom of the lay, and is operated by suitable..
connections with a can located on the driving shaft to protrude and recede the
bolt at the proper times. That is to say, the bolt is advanced as the picker-stick.
is receded and receives and holds the same. In this position, the return flight of
the shuttle strikes the finger, C2, and is arrested thereby. At the instant the:
advancing mechanism starts to operate, the bolt is withdrawn, allowing the picker-.
stick to recede under the pressure of the advancing mechanism.
The object in thus arresting the progress of the shuttle is twofold, as above
mentioned. The main of these objects, and for the accomplishment of which the
adjustment of the latch is provided, is the desirability, above referred to, of laying
the ends of the lengths in the selvidge warp. In the present machine the shuttle.
is arrested in position that the rear nipper jaws, or jaws having a grasp on the.
thread, remain between the warp threads as the same close upon the thread just..
laid in. As the shed is being completed by the warp, and before entire completion,
the shuttle is advanced to the end of its stroke, and the rear end, which has been
between the warp threads, is withdrawn therefrom, laying in the end of the filling.
thread smoothly.
To compel the thread ends to pull from the grasp of the nipper jaws evenly, the
jaw, A', is provided with the small pin, A, over which the thread is compelled to
travel in drawing out of the jaws of the shuttle. The movement of the advancing

page_text: mechanism is so timed with reference to the warp mechanism of the loom that the
shed is completed just as the jaws are withdrawn, in fact gliding over the tapered
ends of the jaws with a considerable tension, grasping firmly the filling thread as
it leaves the jaws, and binding it into the fabric.
The driving mechanism for these various devices are all driven from the driving
shaft, D, mounted in journals on the under side of the .lay. On this shaft are
mounted various small cams which engage the various levers and are formed to
produce in the said levers the several movements described. These levers are
fulcrumed at convenient points on the lay, as shown in the drawings.
The driving shaft, D', is connected with the driving mechanism of the loom
through two sets of mitre gears; the one set on a driving shaft placed on the
fulcrum rod of the lay, and the other in the centre of the driving shaft. These
sets are connected by a connecting shaft, D².
While there is herein described only the one set of devices, on the one end of
the lay, it will be understood that both ends are likewise provided.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1. In a loom, such as described, in combination with a lay provided at both ends
thereof with a rocking plate, .B 1, adapted to lead in the thread between opening
and closing jaws, a measuring mechanism consisting of a depressing finger, B 17,
to catch the thread and depress the same when the thread has been carried to the
opposite end of the lay, a carrying mechanism, A, provided with nipper jaws to
convey it between the warp threads, and a driving mechanism consisting of a
driving shaft, D 1, journalled on the said lay, and provided with can slotted wheels,
engaging pitman connections between the said rocking plate and the measuring
mechanism, whereby the action of each is timed relatively to the other, substantially
as described.
2. In a loom, such as described, in combination with a lay provided at both ends
thereof with a rocking plate, B 1, adapted to lead in the thread between opening
and closing jaws, a measuring mechanism consisting in a depressing finger B 17, to
catch the thread and depress the same when the thread has been carried to the
opposite end of the lay a carrying mechanism, A, provided with nipper jaws
adapted to engage and take the thread from the said opening and closing jaws to
convey it between the warp threads, and a driving mechanism consisting of a
driving shaft, D 1, journalled, on the said lay, and provided with can-slotted wheels,
engaging pitman connections between the said opening and closing jaws, and the
said measuring mechanism, whereby the action of each is timed relatively to
the other, and a connecting rod, D2, having a mitered gear at both ends thereof,
adapted to be rotated by the driving shaft of the loom and to mesh with a mitered
gear on the driving shaft, D 1, substantially as described.
3. In a loom in which the filling thread is laid in between the warp threads of
the cloth in short lengths substantially as described, a measuring device consisting
of a reciprocating rod, B 18, having a rotary arm, B 17, pivotally connected
thereto, and a sleeve or enfolding rod, B 19, adapted to engage the said arm B 17,
to throw it into a vertical or horizontal position at the lower and upper end of the
stroke, substantially as described.
Dated thin 1th dat Mauch 1907
CRUIKSHANK & FAIRWEATHER,
Chartered Patent Agents,
62 St. Vincent Street, Glasgow, Agents for the Applicants.