Year: 1886

page_text: Date of Application, 4th Nov., 1886.
Complete Left, 3rd Aug., 1887.
Complete Accepted, 6th Sept., 1887.
We, LEWIS HASLAM, Derby Street Mill, Manufacturer, and CORNELIUS MARSHALL,
Manager, both of Bolton in the County of Lancaster, do hereby declare the nature of
our said invention to be as follows :-
This invention relates to means for automatically releasing the self-acting brake
employed in looms for weaving, and consists in attaching to the ordinary brake lever
a lever pivoted to the back end of the loom side; the latter lever being provided
with slots, or their equivalents, in which is mounted a sliding rod with a curved or
other notch. On the tappet shaft immediately below the brake lever is fitted a fly
wheel on the boss of which is disposed a lip. When the "weft" breaks and the brake
apparatus operates to stop the loom the brake lever and its attachments drop and
places the sliding rod and curved notch in the path of the revolving lip on the fly
wheel boss, which slides it forward so as to allow the lip to lift the supporting lever
in the next revolution, thereby relieving the brake from the fly wheel. The lever
and its connections are operated by the momentum of the fly wheel on the tappet
shaft after the brake has been applied, and is constructed to stop the loom on the back
centre when the "weft" breaks, which is the most convenient position for the weaver.
The sliding rod on the pivoted lever is provided with a catch on which operates a
lever or arm attached to the sley sword immediately the loom is started, thus placing
the sliding rod in position for the next operation. The fly wheel is driven from the
tappet shaft by suitable taper lock bolts, being constructed so that when the motion
of the loom is reversed the fly wheel and lip are not operated.
Dated the 3rd November 1886
EDMUND CHADWICK,
Agent for Applicants.

page_text: Automatically Releasing the Brake Employed in Looms for
Weaving.
We, LEWIS HASLAM, Derby Street Mill, Manufacturer, and CORNELIUS MARSHALL,
Manager, both of Bolton in the County of Lancaster, do hereby declare the nature of
our said invention and in what manner the same is to be perforined, to be particularly
described and ascertained in and by the following statement :-
This invention relates to means for automatically releasing the self-acting brake
employed in looms for weaving, and consists in attaching to the ordinary brake lever
a lever pivoted to the back end of the loom side; the latter lever being provided with
slots, or their equivalents, in which is mounted a sliding rod with a curved or other
notch. On the tappet shaft immediately below the brake lever is fitted a fly wheel
on the boss of which is disposed a lip. When the "weft" breaks and the brake
apparatus operates to stop the loom the brake lever and its attachments drop and
places the sliding rod and curved notch in the path of the revolving lip on the fly
wheel boss, which slides it forward so as to allow the lip to lift the supporting lever in
the next revolution, thereby relieving the brake from the fly wheel. The lever and its
connections are operated by the momentum of the fly wheel on the tappet shaft after
the brake has been applied, and is constructed to stop the loom on the back centre
when the "weft" breaks, which is the most convenient position for the weaver.
sliding rod on the pivoted lever is provided with a catch on which operates a lever
or arm attached to the sley sword immediately the loom is started, thus placing the
sliding rod in position for the next operation. The fly wheel is driven from the
tappet shaft by suitable taper lock bolts; being constructed so that when the motion
of the loom is reversed the fly wheel and lip are not operated.
The
Fig. 1 is a side elevation of a loom fitted with our improvements showing the brake
applied to stop the loom on the back centre-Fig. 2 is a plan of same-Fig. 3 is
a side elevation showing our improved apparatus when the loom is working-Fig. 4
is a front elevation showing position of starting handle and its connection with the
brake lever when the loom is working and Fig. 5 is a view of same when the loom is
stopped through the breaking of "weft" or otherwise.
A is the crank shaft of the loom fitted with the brake wheel B, and against which
operates the brake lever C pivoted to the loom side D by the centre E. This lever
is fitted with the footstep F in which is disposed the pin or centre G carrying the
presser H lined on its outer face with leather or other suitable substance, which
operates against the brake wheel B when requisite to stop the loom. The underside
of the lever C is provided with the foot I against which operates the foot J attached
to the brake lever K. The lever K is pivoted to the loom side D by the pin or
centre L; the opposite end being attached to the rod M coupled to the lever N
operated by the starting handle O. The lever K is fitted with the pins P which fit
in the slots z in the sliding rod R, the latter being provided with the notches S and T
as shown more fully in Figs. 6 and 7. On the tappet shaft U is mounted loosely the

page_text: fly wheel V on the boss of which is disposed the lip W, as in Fig. 11, for the purpose
of operating the sliding rod K when the "weft" breaks or the loom is to be stopped.
The boss of the fly wheel V is fitted with the taper bolt X which is driven by the
spring taper lock bolt Y mounted in the boss Z secured to the tappet shaft U by the
set screws h, as shown in enlarged sectional elevation and plan in Figs. 9 and 10.
The fly wheel V is revolved by the flat side of the taper spring lock bolt Y coming
in contact with the flat side of the taper bolt X, as shown in Fig. 10. To increase
the brake power a portion of the periphery of the brake wheel B is increased in width
at the point operated upon by the presser H when the loom stops, as in Fig. 8.
This apparatus operates as follows:-When the loom is working and the starting
handle is in the position shown in Fig. 4 the brake lever K and sliding rod R are
lifted out of the path of the revolving lip W on the fly wheel V, and the lever C is
released from the brake wheel B as in Fig. 2. Immediately the "weft" breaks the
starting handle O is released by the "weft" fork lever in the usual manner when it
assumes the position shown in Fig. 5, which causes the lever N and rod M to drop and
presses the lever C against the brake wheel B and stops the loom on the back centre,
which is the most convenient position for the weaver, as in Fig. 1.
When the
lever K drops the lip W on the fly wheel operates in the notch S and slides the rod R
forward to place the notch T in position for the next revolution of the lip W on the
fly wheel V, which is caused by the momentum of the fly wheel alone after the brake
has been applied. When the brake has been applied the tappet shaft U stops leaving
the fly wheel V to make one or more revolutions by its own momentum, during which
the lip W operates the notch T and slides the rod R forward until the inclined end a
is raised on the stud b secured to the loom side D, thus automatically releasing the
brake from the fly wheel. When the fly wheel V revolves of its own momentum the
bolt X leaves the spring bolt Y and strikes it on the opposite side causing the latter
to yield and allow the bolt X and wheel V to revolve as long as its own momentum
propels it. The next forward motion of the sley sword d re-sets the sliding rod R
by the arm or finger striking against the projection g on the sliding rod. When
the loom is re-started the handle O is placed in the position shown in Fig. 4, which
lifts the brake lever K and its connections as in Fig. 3, when weaving can be per-
formed until the loom is desired to be stopped or the "weft" breaks. The tension or
pressure of the brake lever K is regulated by the spring p. The position of the sliding
rod R is adjusted by the screw mounted in the lever K. The lever K is provided
with the pin or projection for the purpose of supporting the end k of the sliding
rod R; the latter being fitted with the elongated projection m of sufficient length to
allow of the sliding action of the same.
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 method of automatically releasing the brake employed in looms for weaving
immediately the loom is stopped, substantially as and for the purpose described.
2. For carrying out the method described in the preceding claim the combination
and arrangement of apparatus, substantially as described and illustrated by the
accompanying drawings.