Improvements relating to the Stopping and Starting of the Carriages of Self-acting Mules:
Year: 1896

page_text: Date of Application, 30th Dec., 1898-Accepted, 6th Mar., 1897
COMPLETE SPECIFICATION.
Improvements relating to the Stopping and Starting of the
Carriages of Self-acting Mules:
I, MATHIAS FLURI, of Ponte San Pietro.near Bergamo in the Kingdom of Italy,
Spinning Mill Proprietor, 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 has for its object a contact or stop device for self acting mules. The
contact or stop devices hitherto employed have the drawback that on the carriage
encountering them with force (in consequence of irregularities in the movement of
the transmission gearing) a shaking and rebounding of the carriago takes place,
causing a stretching of the yarn threads.
This improved contact or stop device on the other band has a buffer which secures
a gentle contact of the carriage without shock and thus avoids any stretching of the
yarn, saves the machine from shock and effects a diminution in the wear of the
working parts.
My arrangement is shown in the accompanying drawings, in which,―
Figure 1 is a front view, and
Figure 2 an end.view.
A standard a is suitably fixed on the machine frame, and carries a support b,
which is of elongated form, and has at one of its ends a bent round part and at
its other end a hook-shaped curved projection 62, the end 6 of which is provided
with a slot . A downwardly projecting elbow arm e and an upwardly projecting
elbow arm d are also provided on the support b, which arms are preferably cast
on the support, but may, however, be attached to the same separately. The first c
of these elbow arms, which both have suitable eyelets at their free ends, serves for
a buffer E. In combination
attaching a spiral spring f, the other d for guiding
with the support, a rod e, movable horizontally in a straight line, is provided, which
is guided in fixeil bearings on the support b, these bearings in the present example
being formed by eyelets and a formed at the bending points of the elbow arms e
and d. This movable rod e carries a buffer E.by means of an arm e¹ firmly connected
to the buffer and to the rod. On the side of the lower eyelet or hollow boss of
the arm is fixed a pin e, on which a strong spiral spring f" (the actual buffer
spring) is hooked by one end, the other end of the spring being firmly connected
with the bent part of the support b. The eyelet e moreover carries 'below, a
latch-shaped projection es having a recess e. An elbow lever g is pivotally mounted
on the end of the projection 6 of the support by means of a pin 9° adjustably
arranged in the slot b. A forked shaped arm 9, projecting laterally from this elbow
lever g carries a roller adapted to drop into the recess e, whilst the downwardly
projecting arm g' has a hook shaped end on which a weak spring f is attached.
A set ring his mounted on the rod'e, which ring serves to limit the movement of the
rode on the forward movement of the buffer or rather when the carriage is moving
forward, and accordingly way be suitably adjusted to the actual fixed distances desired.
The eyelet c forms a contact or stop for the set ring h, whilst on the movement
of the rode and the buffer when the carriage is running in, the eyelet do of the
arm d forms a similar contact or stop for the part e° and--serves as a fixed limiting
device.
The working of the device will be apparent from the form of construction
hereinbefore 'described. As soon as the carriage runs in the buffer E is forced

page_text: back by the same, the spring being stretched, and when the carriage has
reached its liinit the stops.e and do come into engagement.
The roller g', actuated by the spring then drops into the recess e, causing a
certain fixing of the buffor in such a way that the recoil of the compressed spring
baffer is partially suspended as long as the carriage is stationary and whilst the
mechanism of the machine is completing the functions for a fresh operation. On
the commencement of the run-out of the carriage, the recoil of the compressed
spring will overcome the weaker spring so that the roller gt will be forced out
of its stop or recess and travel in front of the buffer until the set ring h
encounters the bearing c. The power of the spring f¹ in this way supports the
drawing power of the belt driving the machine, and thero cousequently results the
further advantage in the present contact device of a not unimportant saving of
power, more particularly in the driving. To this saving of working power there must
also be added a saving of powor when the carriage is running in, as the retaining
cord, which in the previous forms of construction of contact devices had to be
strongly pulled for the purpose of checking or braking the carriage, no longer
requires any pulling, whereby a greater durability of the running-in-gearing and its
teeth is obtained and any grinding of the friction device rendered impossible. Tho
various cords for operating the running-in and the belts are saved owing to the
lighter movement of the machine, and thereby gain considerably in durability.
The following advantages are therefore obtained':
(1) A saving of the machine and its parts;
(2) A saving of the driving gear (cords, belts or the like);
(3) A saving in the yarn or rathor in its threads.
(4) A considerable roduction of power.
(5) An easier play of the mechanisms, assisting the production.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be perforined, I declare that what
I claim is :-
1. A contact or stop device for self-acting mules, characterized by a
buffer, with the object of obtaining a stopping of the carriage without shock and
spring
assisting the belt driving action by means of the power stored up in the buffer
spring in consequence of the buffering substantially as herein before set forth.
2. In a contact or stop device for self-acting mules, the combination with a spring
buffer, of a device for depriving the carriage of the pull of the stretched buffer
spring after the running in and whilst the carriage is stationary; substantially as
described.
3. In a contact or stop device for self-acting mules, the combination with a spring
buffer, of a device consisting of a spring part adaptod' to act against the buffer
spring in a certain position of the carriage, substantially as described.
4. In a contact or stop device for self-acting mules with spring buffer, a buffer
spring (1) connected on the one hand, with the support of the contact device, and, on
the other hand, with the buffer or its carrying arm, substantially as described.
5. In a contact or stop device for self-acting mules with spring buffer, a spring
part for counteracting the buffer spring consisting of a spring (f) connected, on
the one hand, with the support of the contact device, and, on the other hand, with
ono of the moving parts for fixing the buffer in a compressed position, substantially
as described.
4
6. A contact or stop device for self-acting mules with spring buffer, in which an
elbow lever is pivotally arranged on the support of the contact device, one arm of 5
said elbow lever being connected with the spring (f), and the other arm carrying
a roller, which when the buffer spring (1) is in tension is adapted to drop behind
a suitable stop or catch of the buffer, substantially as described.
7. A contact or stop device for self-acting mules with spring buffer, in which, for
guiding the buffer, a bar movable horizontally in a straight line is employed, which 5
bar is adjustable in fixed bearings on the support, substantially as described.

page_text: 8. In a contact or stop device for self-acting mules with spring buffer, a support (b)
with elbow arms (e d), the latter having eyelets (ed) for guiding the rod (e) of
the buffer (E), which rod (e) is provided with a set ring (h) and carrying arm (e)
for the buffer (E) and with a projection (e) as a catch or stop for the same adapted
to be engaged by a rollor (9) of an elbow lever (g) substantially as described..
nd this 90th do of December 1896.
LANCHETTFOL
W. P. THOMPSON & Co.,
Of 6 Lord Street, Liverpool, Agents for the Applicant.