Improvements in Stop Mechanism for Spool Carriers of Braiding Machines.
Year: 1893

page_text: Date of Application, 12th Sept., 1893-Accepted, 25th Nov., 1893
COMPLETE SPECIFICATION.
Improvements in Stop Mechanism for Spool Carriers of Braiding
Machines.
I ALEXANDER MELVILLE CLARK, of the Firm of A. M. & Wm. Clark, of
53 Chancery Lane, in the County of Middlesex Fellow of the Chartered
Institute of Patent Agents do hereby declare the nature of this invention (a
communication to me by Louis Raffloer of Kurfurstendamın, 111ª Berlin, in the
Empire of Germany Merchant and Charles Henry Schott, of 801 Driggs Avenue
Brooklyn, in the County of Kings and State of New York, United States of
America Merchant) and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement, reference
being had to the accompanying drawing forming part hereof, wherein :-
Figure 1 is a side view of a spool-carrier embodying the invention.
Figure 2 is a back view of the same, that is looking in the direction of the
arrow Figure 1.
Figure 3 is a side view, with parts broken away and in section, to better show
other parts of the improved stop mechanism.
Figure 4 is a sectional detail of the tension drum and parts connected thereto.
This invention relates to an improved stop mechanism for spool-carriers of
braiding machines, and consists in the arrangement and combination of parts
hereinafter described and claimed.
The object of the invention is to provide a spool carrier with mechanism which
will automatically stop the machine when the thread of a carrier is broken, thereby
preventing much delay and imperfections in the finished material.
In the drawings the letter A represents a spool, which carries the thread to be
formed into a braid. This thread is conveyed around a suitable guide a (as shown
in Fig. 1.), and through an eye b, or otherwise to an eye in the slide
whence
it may be carried through an eyed to the point of braiding in the machine. The
slide c is connected, as by string e, to a drum B, and is held under tension by a
coiled spring in said drum, which spring may be regulated by a tension device, as
shown at c.
Connected to the drum B is a cam fagainst which bears the arm 1
of a lever C; the arm 2 thereof being adapted to contact with a pin g carried
within the hollow shank D of the spool-carrier.
'
This pin
is adapted to protrude from the bottom of the shank D when the
pin is in its lowest position as shown by dotted lines in Figure 3.
E designates a latch which controls the output of the spool A, and is operated
by the slide c.
The operation of the improved stop mechanism is as follows:
After the thread is conveyed from the carrier to point of braiding it is always
held under tension of the spring operated drum B, whether the thread is being
unwound from the spool A, or the spool is locked and the slide c is taking up the
slack. The arm 1 of the lever C during all of the time the thread is under
tension, bears upon the highest portion of the cam f, thus supporting the pin g in
an elevated position with the lower end thereof, drawn into the shank D, as shown
in full lines in Figure 3, but the instant the thread is broken the slide c is released
and the spring in the drum unwinds, causing said drum to turn, bringing the lowest
part of the cam fin contact with the arm 1, of the lever C, and lowering the pin g,
so that the end thereof will protrude from the bottom of the shank of the carrier,
as shown in dotted lines in Figure 3.
This pin when lowered arrives in the plane of a suitable lever (not shown),
which operates to stop the machine in well known ways, it being understood that
the shank D is held on a revolving or reciprocating carrier frame.

page_text: It is obvious that any suitable tension mechanism may be employed in con-
nection with the stop device, but the one shown will be found reliable and
effective.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. In a stop mechanism for spool-carriers, the combination of a device for
holding the thread under tension, sliding pin g, and means substantially as described,
for automatically dropping said pin when tension is relieved, substantially as and
for the purpose described.
f
2. In a stop mechanism for spool-carriers, the combination of the drum B, cam
operated by said drum, pin g, and means for connecting said cam and pin,
substantially as and for the purposes specified.
3. The combination of the tension drum B, cam f carried by said drum, pin g,
and lever C, all arranged so that when tension is relieved from the drum B, the
pin g will be released, substantially as described and for the purposes specified.
4. A vertically sliding pin, a tension slide c for the thread, a support for a
spool, a tension drum connected with said tension slide, and mechanism connecting
said drum with said pin, all combined and arranged to hold the pin raised whenever
the drum is under tension, and to allow said pin to drop when the drum is not
under tension, as specified.
Dated this 12th day of September 1893.
A. MELVILLE CLARK,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.