Improvements. in Spinning and Twisting. Frames.
Year: 1896

page_text: Date of Application, 24th Dec., 1896-Accepted, 20th Mar.. 1897
COMPLETE SPECIFICATION.
Improvements. in Spinning and Twisting. Frames.
We, JOHN GREGSON, of No. 274 Prospect Street, Superintendent of Cotton
Mill, and CHARLES JOSEPII MURRAY, of No. 676 Plymouth Avenue, Overseer
of Ring Spinning Room, both in the City of Fall River, in the County of Bristol,
and State of Massachusetts, 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 that class of spinning frames in which
the ring rail carrying the travelers is provided with a vertical movement, upward
and downward, in relation to the spindles. And it consists in means for holding
the ring rail in its lowest position against the stress of the overbalancing weights,
which move it upward, for the purpose of permitting the removal from the
spindles.of the bobbins when they have been filled, or doffing, as it is called.
It should be understood that when the frame is stopped for the purpose of
doffing, the ring rail may become stationary at any height in respect to the:
spindles and bobbins, and that it is not possible to remove the bobbins from
the spindles unless the ring rail, or 'some connection thereof, be forced down to its.
lowest position, where it must be held during the doffing.
Our invention consists in meaus connected with the frame of the machine, located
in operative relation to the ring rail or some of its operative mechanism, and
adapted to be moved by hand into engagement therewith when the ring rail has
been moved downward to a doffing position, whereby the correct position of the
rail for doffing is indicated; the rail held down during doffing, against the tendency
of the overbalancing weights to lift it, and the weights held in their elevated
position.
Figure 1, represents a vertical sectional elevation of a ring spinning, frame,
showing one form of our improvement.
Figure 2, represents a front elevation of portions of the frame showing a
modified form, of the device.
Figure 3, represents a view of the adjustable stop arm, or liolder.
Similar numerals of reference designate corresponding parts throughout.
The ring rail A is mounted upon a number of vertical rods a-a, which are
suitably supported, and to which vertical movements are imparted by the rock
shafts b, each rock shaft having an arm c which is connected with the lower
end of a rod a, and an armi d. These latter arms d, are connected by a long bar.
That one of the arms d nearest the operating devices, is connected with the builder.
lever by a chain, which passes to the take-up roll of the builder lever. This lever
is operated by a cam in the usual manner, and the lever serves to move the ring
rail downward and in opposition to the over-balancing weights C, with one of which
weights each rock shaft is connected, the weights serving to lift the ring rail when
the builder lever cam permits an upward movement to be imparted to the said lever,.
and to the ring rail.
It will be seen from what we have said that the ring rail may always be moved.
downward by hand from any position above its lowest, by moving or drawing.
downward the vertical rods a, or the outer ends of the arms c, or by pressing down-
ward the rail itself. By so doing the connecting chain will become slack and
cease to support the weights C and the stress of tliese weights will be entirely.

page_text: upon the part laid hold of in depressing the rail, and will be borne by it until it
has been released, and the weights when so held, if suddenly let go, snap upward
the ring rail and its connections, with sufficient force to damage some part. It is
therefore very desirable that there shall be some means for securely holding the
weights in their lifted position, and the ring rail in its lowermost. The make-
shift heretofore employed for this purpose, very often accidentally slipped, or
was forced from its place, suddenly releasing the weighta, permitting them to fall
with great force, lifting the ring rail with a snap, and bringing stress up on the
chain, take-up, and building lever, which often broke or injured some of its operative
parts.
In Figure 2 we have represented our invention as applied in the form of a safety
arm D which not only serves to locate the ring rail in proper position for doffing,
but also to securely hold the weights in their elevated position. It is attached at
its upper end to the under surface, of the stationary rail e by a hanger, bolted to
the rail and having cars to which the upper end of the arm is pivoted. These
cars are so shaped as to allow the lower end D of the arm to have a swinging
movement, inward and outward from the front of the machine.
The hanger is also so located upon the under surface of the said rail, that the
lower end of the safety arm can be moved upon the upper edge of the arin c of one
of the rock shafts b, when this arin is in its lowest position; and when the safety
arm can be thus moved to a position over said arm c, it indicates that the ring rail
is in its lowest position, or the position to which it should be moved for doffing, and
it, at the same time serves to hold all the weights C in their clevated position during
the doffing operation.
We prefer that the safety arm be so located, in relation to the arm that in its
normal or inoperative position it will hang free from said arin, or at one side
thereof, so that the said arm may travel upward and downward at one side of it
without coming into contact with it, and also so that it will require a positive
action by the operator to move it into its holding relation with said arni. We also
prefer that it he so located as to engage said arm o near its outer end, as the strain
upon it will not be so great as it would be if near the shaft b. But one of
these safety arms will be needed for une entire. side of the spinning frame, the
rock shafts being connected together so that the downward movement of one arm c
will cause the downward movement of all the others, and the upward movement of
all the weights.
We prefer to apply the safety arm to the portion of the machine nearest the
builder lever, and to operate in connection with the arin c which is nearest it. We
also prefer that the lower end of the safety arm have a curved recess g into
which the upper edge of the arme may engage and thereby be more securely
beld.
It is desirable for preventing expense in fitting and for the purpose of adjustment,
that the safety arm be made extensible, and we have represented, as one means for
so doing, the construction shown in Figures 2 and 3, where it is represented as
made in two parts, or sections D-D', the contiguous ends of which overlap cach
other, and are connected by a clamping bolt, which passes through a slot in one
or both ends, whereby the lower section may be moved upward or downward in
relation to the upper section, as desired, and then, be rigidly fastened thereto in
such position.
In Figure I we have shown the safety arm as pivoted to the samson H, instead
of to the rail e, and its outer end being movable in a vertical arc. Instead of
engaging the arm e of the rock shaft b, it engages the arm d of said rock shaft.
We prefer that this engagement be effected by means of an extension downwardly,
as at, which enters an eye, cavity, or holder k secured to or integral with the
arın d. The eye is secured to the arm d by a bolt or in any other desired way.
This modification accomplishes the purpose of the form of our invention as
described, and practically the same way. It serves, upon the lowering of the
ring rail, to fix its lowermost position and hold it therein, and it also acts to

page_text: hold all the overbalancing weights in their highest position and precludes the
possibility of any accidental release thereof, whereby damage may be done to the
machine.
The invention is adapted to be easily applied, not only to new frames, but to-
frames which are now in use.
In use, the operation of the spinning frame is stopped, and the ring rail is moved
downward to the doffing position by hand, thereby lifting the weights C, slackening
the connecting chain until the safety arin can be moved by hand to a position to
engage some part of the ring rail operating mechanism; when this engagement.
can he had, it indicates that the ring rail is in the doffing position. This position
of the parts is maintained until the doffing is completed, when the operator
releases the ring rail and the weights, by the removal of the safety arm, thereby
permitting the ring rail to be moved upward until the slack has been taken from.
the connecting chain, and the weights C to move dowward.
It will be seen that the safety arm may be located upon other parts of the frame
and make engagements with other parts of the ring rail or its operative devices,
without departing from the essential spirit of the invention.
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:
Claim 1. In a spinning frame, the combination with the ring rail, and its
traversing mechanism, including a rock shaft furnished with a locking portion,
of a locking device mounted in the machine and adapted to lock the rock..
shaft.
Clain 2. In a spinning frame, the combination with the ring rail, aud its
traversing mechanism, including a counter. weight, of means, independent of the
traversing mechanism, adapted to be connected therewith, for sustaining the counter-
weight in an elevated position.
Claim 3. In a spinning frame, the combination with the ring rail, and its
traversing mechanism, including a lever arm, of a safety arm, pivotally mounted
in the machine, and adapted to be swung into engagement with a portion of the
lever arm.
Claim 4. In a spinning frame, the combination with the ring rail, and its
traversing mechanism, including, a lover arm, of a combined safety arm and.
ring rail positioner, pivotally mounted in the machine, and comprising members.
which are adjustably connected, whereby said arm may be adjusted in length.
Dated this Eleventh day of December AD 1896.
JOHN GREGSON.
CHARLES JOSEPH MURRAY.
Haseltine, Lake & Co.,
45 Southampton Buildings, W.C., Agents for the Applicants.."