IMPROVEMENTS IN STOP MOTIONS FOR LOOMS
Year: 1885

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We, MERRILL AUGUSTUS FURBUSH, of N° 1711 Green Street, Philadelphia,
Pennsylvania, United States of America, Manufacturer, CHARLES HARRISON
KNOWLTON, of Royden Street, Camden, Camden County, New Jersey, Superin-
tendent, and BENJAMIN FRANKLIN MEYER, of 739, Walnut Street, Camden,
Camden County, New Jersey, Foreman, do hereby declare the nature of our
Invention for "IMPROVEMENTS IN STOP MOTIONS FOR LOOMS," and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement:-
The object of our Invention is to reduce the shocks and jars resulting from the
stoppage of the movement of the lay when the shuttle fails to properly enter
a shuttle-box; and this object we attain by providing the protector-shaft with an
additional arm, which acts to effect the shifting of the belt onto the loose pulley
before the other arm of the protector-shaft comes into contact with the stop on the
breast-beam, so that the momentum only of the lay has to be arrested, there being
no application of power thereto when the stop acts.
In the accompanying drawings ;-
;
Fig 1, represents a side view of sufficient of a loom to illustrate our present
Invention.
;
Fig 2, a view looking in the direction of the arrow, 1, Fig; 1, the lay being
omitted; and
Fig; 3, a plan view of part of Fig; 1.
A, A', represent part of the side frames of the loom, having bearings for the end
driving-shaft, B, and for the crank-shaft, D, the latter being connected to the lay, E,
and being driven from the shaft, B, by spur and bevel gearing in the usual manner.
(See dotted lines, Fig; 1.)
The shaft, B, has fast and loose pulleys, a, a', for receiving a belt from any
adjacent counter-shaft, the belt being shifted from one pulley to the other by
a fork, b, on a rod, d, guided in a bracket, e, on the frame, A, and acted upon by a
spring, f, which tends to draw the rod in the direction of the arrow (Fig; 1,) and
shift the belt from the fast pulley, a, to the loose pulley, a¹. The front end of the
rod, d, is connected to one arm of a lever, F, hung to a pin on the frame, the other
arm of said lever being connected by a rod, g, to the long arm of a lever, G, secured
to a rock-shaft, h, which is adapted to bearings on the breast-beam and frames of
the loom, and is at liberty to move longitudinally and also to turn in said bearings.
The upper or short arm of the lever, G, has a lug, m, which is adapted to engage
with a lug, m, on a lever, H, hung to a pin, c, on the frame, A, a spring, v, tending
to move the lever H, in the direction of the arrow, Fig; 3, and thus retain the
lug; m, of the lever, H, in engagement with the lug, m, of the lever, G, the driving
belt being under such circumstances upon the fast pulley, a.
When the lever, H,
is moved in a direction contrary to that indicated by the arrow, however, so as to
free the lever, G, from the control of the lug, m³, the spring f, causes the retraction

page_text: of the rod, d, and the shifting of the belt from the fast to the loose pulley. This
shifting of the belt must take place whenever a shuttle fails to properly enter the
box; hence the lay, E, carries a protector mechanism, which, as usually constructed,
consists of a rock-shaft, i, extending across the lay, and having arms, n, and, p;
one arm, n, being arranged near each end of the shaft, and each of said arms, n,
having a lug, s, adapted to bear upon a shuttle-binder, k, in the front of one of the
shuttle boxes, so that when the shuttle enters the box, the binder, k, will press the
arm, n, outward and depress the arm, p, as shown by full lines in Fig; 1, the arm
remaining in the elevated position shown by dotted lines when the shuttle fails to
properly enter the box.
When
One end of the shaft, i, and one arm, n, only are shown in the drawings.
in the position shown by dotted lines, the arm, p, on the forward movement of the
lay strikes a stop on the beam-beam and prevents the lay from beating up, other-
wise the shuttle remaining in the shed would break the warp threads. In the usual
construction, the arm, p, bas also been caused to effect the shifting of the belt from
the fast to the loose pulley, said arm, striking a lever, which presses the shipper-
handle out of its notch and causes the necessary movement of the belt just before
the movement of the lay is arrested by contact of the arm, p, with the stop or
bunter. The objection to this plan is that the operations follow each other so
closely that the belt cannot be fully shifted before the contact of the arm with the
stop; hence the forward movement of the lay is arrested while power is still being
applied to cause such movement, and in consequence sudden shocks and a severe
straining of the loom result. We overcome this objection by providing the
protector-shaft, i, with an additional arm, x, which acts in advance of the stop-
arm, p, so that ample time is afforded for fully shifting the belt before the movement
of the lay is arrested. The arm, x, has a cam-like outer end adapted to strike the
downwardly-bent end of the lever, H, and cause the vibration of said lever, so as to
withdraw its lug, m³, from engagement with the lug, m, of the lever, G. A lever, J,
is hung to the lever, G, and a lever, J¹, to an arm, y, on the shaft, h, the short arms
of the levers being adapted to slots in the frame, A, so that by manipulating either
of the levers a longitudinal movement of the shaft, h, against the action of
a spring, , may be effected, this movement being sufficient to free the lug, m, of
the lever, G, from engagement with the lug, m¹, of the lever, H, the latter being
retained by contact with a stop, vl, on the frame.
The loom can thus be thrown out of gear by hand from either side, or the release
of the lever, G, may be effected by operating the lever, H, by hand.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we claim, is
1. The combination of the lever, G, and the belt-shifting devices of the loom
connected to said lever, the lay, E, the shuttle boxes, the breast-beam, the lever, H,
having a lug adapted to engage with and retain the lever, G, and the protector-
shaft having a stop-arm, p, and an arm, 2, adapted to strike and cause the vibration
of the lever, H, substantially as hereinbefore set forth.
2. The combination of the lever, G, the arm, y, the shaft, h, the spring, h, the
lever, J, J', the slotted frame, A, A¹, and the lever, H, substantially as herein before
set forth.