Improvements in Stop Motions of Looms for Weaving.
Year: 1898

page_text: Date of Application, 23rd May, 1898-Accepted, 13th Aug.,
1898
COMPLETE SPECIFICATION.
Improvements in Stop Motions of Looms for Weaving.
We, ALOYSIUS JOHN GILLET, Overseer, of 232, Pitman Street, and GEORGE
RUTTER, Gentleman, of 361, Peckham Street, both of Fall River, Massachusetts,
in the 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:—
Our invention has relation to improvements in looms, and the object is to pro-
vide a means for automatically stopping the loom when the harness falls, and to
this end the novelty consists in the construction, combination and arrangement of
the same as will be hereinafter more fully described and particularly pointed out
in the claim's.
In the accompanying drawings, the same reference characters indicate the same
parts of the invention.
Figure 1 is a front elevation of the lathe mechanism of a loom, with our attach-
ment applied thereto.
Figure 2 is a bottom plan view of the lathe.
Figure 3 is an end view with the parts not immediately affected, removed.
Figure 4 is a transverse section of the same.
Figure 5 is a top plan view of the loom.
1 represents the lathe which is of the ordinary construction, and 2 represents
the harness which is likewise of the usual construction, and together with the
lathe operates in the usual manner.
3 represents a longitudinal shaft journaled in the brackets 4-4, on the under-
side of the lathe, and 5 represents a spiral spring encompassing said shaft and
having one end fixed to a collar 6, adjustably secured to said shaft, and its oppo-
site end fixed to the underside of the lathe.
7 and 8 represent two parallel depending arms, fixed on the shaft 3, and pro-
vided at their lower ends with vertical guide-slots 9-9, which receive the hori
zontal arms 10-10, of the bell-crank levers 12-12, fulcrumed in the stationary
brackets 13-13, fixed to a suitable point on the loom-frame.
The rear horizontal arms 14-14, of these bell-crank levers, extend rearwardly
under the loom harness as shown.
15 represents a short arm on the forward end of one of the arms 14, and 16
represents a counter-balance weight suspended from said arm 15, to normally hold
the rear arms 14 out of contact with the harness, and the front arms 10-10 out
of the path of the slotted arms 7-8 on the shaft 3.
17-17 represent integral pawls on the free ends of the front arms 10-10, which
extend through the guide-slots 9-9, and when the rear arms of the bell-crank
levers are depressed, the front arms are consequently thrown upward and as the
lathe goes forward, the pawls engage the arms 7-8, and hold them so that the
further movement of the lathe carries the shaft 3 with it causing it to rotate or
oscillate in its bearings.
18 represents a radial dog, secured to one end of the shaft 3, and its outer end

page_text: terminates in a horizontal arm 19, lying approximately in the same horizontal
plane as the shaft to which it is connected, and when said shaft is oscillated as
above described, this arm 19 is turned downward so as to extend below the shaft.
20 represents a slide-bar having a transverse reciprocating movement in suit-
able guides, its forward end abutting against the continuous face of the spring
actuated shifting lever 21.
22 represents a lug on the upper face of the slide bar 20, and which is normally
out of the path of the arm on the radial dog 18, but when the shaft 3, is oscil-
lated, the lug 22, projects into the path of said dog, which strikes it and carries
it forward with it, when the shifting lever 21, is set to hold the usual driving
belt on the tight pulley to operate the loom, its upper end is held in position by
a notch 23, in the frame, and when the bar 20 is moved forward by the action of
the dog on the shaft 3, the spring actuated shifting lever is forced out of the retain-
ing notch, and under the influence of its spring carries the driving belt over to
the loose pulley and instantly stops the loom.
In operation, the loom works in the usual manner, but should the harness fall
below its working position, caused by a strap or wire breaking, the defective har-
ness will rest on the rear arms of the bell-crank levers throwing their forward
ends up to engage the depending arms on the shaft 3, causing it to oscillate, and
depress the dog, which as it is carried forward by the lathe, strikes the lug on
the sliding bar, which in turn forces the shifting lever out of its retaining notch,
thereby releasing it so as to shift the driving belt as above described.
Although we have specifically described the construction and relative arrange-
ment of the several elements of our invention, we do not desire to be confined to
the same as such changes or modifications may be made as clearly fall within the
scope of our invention without departing from the spirit thereof.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. A loom comprising the heddle-harness, the lathe and the belt shifting lever,
an oscillating shaft carried by said lathe, a dog fixed to said shaft, and a slotted
arm depending from said shaft, in combination with a bell-crank lever fulcrumed
in the loom-frame, and provided with an arm projecting into the path of the
slotted arm on said oscillating shaft, and an arm projecting into the path of the
heddle-harness, and a sliding-bar in operative contact with the shifting lever, and
provided with the shifting lever, and provided with a lug projecting into the path
of the dog on the oscillating shaft, substantially as shown and described.
2. The combination with the oscillating shaft 3, the slotted arms 7-8, and the
radial dog 18 fixed to said shaft, of the bell-crank levers 12-12, their forward
arms projecting into the path of the slotted arms on said shaft and their rear arms
projecting into the path of the heddle-harness, the sliding-bar 20, normally rest-
ing on the spring actuated shifting lever, and provided with a lug projecting into
the path of the dog on the shaft 3, substantially as shown and described.
Dated this 21st day of May 1898.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.