Improvements in Driving and Stopping Mechanism for Twisting, Winding, or similar Spindles.
Year: 1889

page_text: Date of Application, 29th Nov., 1889
Complete Specification Left, 23rd Aug., 1890-Accepted, 27th Sept., 1890
Improvements in Driving and Stopping Mechanism for Twisting,
Winding, or similar Spindles.
I, JOHN BOYD, of Shettleston Iron Works, in the County of Lanark North Britain,
Engineer, do hereby declare the nature of this invention, to be as follows, that is to
say :-
My said invention comprises improvements designed for twisting, winding, or similar
machines in which, on account of the heavy work to be performed, the spindles have
to be driven by means of flat belts instead of the round bands or cords used with
lighter machines.
In carrying out my present invention I, to some extent, adapt stop-motion and
other details of kinds described in Patent Specifications No. 3386 of 1880 and No. 2757
of 1881, to operate satisfactorily in combination with special details for guiding,
tightening and slackening the flat belt and in some cases with a device for gripping
the belt when slackened.
In one modification of my improved machinery the driving belt for a vertical spindle
passes from the under side of a pulley or drum on a horizontal shaft, upwards to and
partly round a guide and tightening pulley, having a cylindrical or slightly convex
surface, and held in an oblique position such as, in combination with the other suitably
placed parts, to avoid any greater strain at or near one edge of the belt than at or near
its other edge. From the guide pulley the belt proceeds with a quarter twist to the
spindle pulley and thence returns with a quarter twist to the upper side of the
driving pulley or drum. The spindle pulley may be made cylindrical or slightly
convex. The guide pulley is carried by a lever centered on the framing, and fitted
with an arm which can be fixed in either of two angled positions to suit the direction
in which it is wished to drive the spindle. The lever arm is made with cheeks
between which the guide pulley is placed, the pulley being by preference fast on a
spindle which runs in bearings in the cheeks. The cheeks are extended beyond the
part of the pulley with which the belt is in contact and their ends are connected to
prevent the belt from getting out of place when the pulley is lowered to slacken the
belt. The lever and its arm may be made in one piece when the capability of changing
the direction of rotation of the spindle is not desired. The lever is made with a
curved arm extending under the rail and shaped to serve as a treadle by depressing
which the worker can move the guide pulley into the working position. A short
vertical arm formed on the lever has jointed to it a plate which slides on the rail, and
which in some modifications is made with a catch to engage on the front corner of the
rail, and with a projecting part to serve as a handle by the worker or to be moved by
the worker's foot so as to lift the plate thereby releasing the catch so as to allow the
guide pulley to descend and slacken the belt. In cases in which it may be desirable
to grip the belt when slackened a gripping projection is formed on the front part of
the catch plate and when the plate slides inwards grips the belt against the front of
the spindle pulley. When the front gripping device is not used 1 prefer to place a
brake surface with which the guide pulley comes into contact when lowered.
When automatic stop-motion mechanism of the kind described in the earlier specifi-
cations hereinbefore referred to, is to be used with the flat-belt driving details, the
lever carrying the guide pulley has jointed to it at a short distance inwards from its
fulcrum a vertical rod shaped to be clear of the belt in whichever direction the spindle
may be driven. The vertical rod extends up to an upper frame rail, and when in the
working position is held up by a catch resting on a catch on a small catch bracket
fixed on the upper rail. The top of the vertical rod carries a detector box or works
in connection with a movable detector carrier; and on a detector falling from the

page_text: breaking or failing of a thread a continually rotating wiper shaft by acting on the
detector pushes the detector carrier so as to disengage the vertical rod from its
sustaining catch, whereupon the weight of the parts causes the descent of the lever
and guide pulley and the stoppage of the action.
Dated this Twenty-eighth day of November 1889.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Driving and Stopping Mechanism for Twisting,
Winding, or similar Spindles.
1, JOHN BOYD, of Shettleston Iron Works, in the County of Lanark, North Britain,
Engineer, 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, that is to say :-
My said invention comprises improvements designed for twisting winding or similar
machines in which on account of the heavy work to be performed the spindles have to
be driven by means of flat belts, instead of the round bands or cords used with lighter
machines.
In carrying out my present invention I, to some extent, adapt stop-motion and other
details of kinds described in Patent Specifications No. 3386 of 1880, and No. 2757
of 1881, to operate satisfactorily in combination with special details for guiding
tightening and slackening the flat belt, and in some cases with a device for gripping
the belt when slackened.
A modification of my improved machinery is shown on an accompanying sheet of
explanatory drawings, Figure, 1, being a sectional plan, and Figure, 2, a sectional side
elevation.
In the example shown in the figures, the driving belt, A, for a vertical spindle, B,
passes from the underside of a pulley or drum, C, on a horizontal shaft, C1, upwards
to and partly round a guiding and tightening pulley, D, having a cylindrical or
slightly convex surface, and held in an oblique position such as, in combination with
the other suitably placed parts, as shown in the figures, to avoid any greater strain at
or near one edge of the belt than at or near its other edge.
From the guide
pulley, D, the belt, A, proceeds with a quarter twist to the spindle pulley, B 1, and
thence returns with a quarter twist to the upper side of the driving pulley or drum, C.
The spindle pulley, B1, may be made cylindrical or slightly convex.
The guide pulley, D, is carried by a lever, E, centered on a bracket, F 1, fixed on
the rail, F, of the framing. The lever, E, is fitted with an arm, E 1, which can be
fixed in either of two angled positions to suit the direction in which it is wished to
drive the spindle, B. The lever, arm, E 1, is made with cheeks, E 2, between which
the guide pulley, D, is placed, the pulley being by preference fast on a spindle which
runs in bearings in the cheeks, E 2. The cheeks, E 2, are extended beyond the part
of the pulley, D, with which the belt, A, is in contact and their ends are connected to
prevent the belt from getting out of place when the pulley is lowered to slacken the
belt. The lever, E, and its arm, E1, may be made in one piece when the capability
of changing the direction of rotation of the spindle, B, is not desired. The lever, E,
is made with a curved arm, E 3, extending under the rail, F, and shaped to serve as a
treadle by depressing which the worker can move the guide pulley, D, into the
working position.
A short vertical arm, E 4, formed on the lever, E, has jointed to it a plate, G, which
slides on the rail, F, and which in some modifications is made with a catch, G 1, to
engage on the front corner of the rail, and with a projecting part, G 2, to serve as a
handle for the worker, or to be moved by the worker's foot so as to lift the plate, G,
thereby releasing the catch, G1, so as to allow the guide pulley, D, to descend and
slacken the belt, A. In cases in which it may be desirable to grip the belt, A, when
slackened a gripping projection, G 3, is formed on the front part of the plate, G, and

page_text: this, when the plate slides inwards, grips the belt against the front of the spindle
pulley, B 1. When the front gripping device (G 3) is not used I prefer to
place a brake surface as indicated by dotted lines at, H, with which the guide pulley, D,
may come into contact when it is lowered.
When automatic stop-motion mechanism of the kind described in the earlier
Specifications herein before referred to, is to be used with the flat-belt driving details,
the lever, E, carrying the guide pulley, D, has jointed to it at a short distance inwards
from its fulcrum, as indicated by dotted lines the lower twisted end, J 1, of a vertical
rod, J, the said part, J 1, being shaped to be clear of the belt, A, in whichever direction
the spindle, B, may be driven. The vertical rod, J, extends up to an upper frame
rail, F2, and when in the working position is held up by a catch, J 2, resting on a
small catch bracket, K, fixed on the upper rail, F 2. The top of the vertical rod, J,
carries a detector box, L, (or it may work in connection with a movable detector
carrier); and on a detector falling from the breaking or failing of a thread a
continually rotating wiper shaft, M, by acting on the detector pushes the detector
box, L, or the detector carrier so as to disengage the vertical rod, J, from its sustaining
catch, whereupon the weight of the parts causes the descent of the lever, E, and
guide pulley, D, and the stoppage of the action.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
The improved combination of driving and stopping mechanism for twisting, winding,
or similar spindles, and comprising a flat driving belt, a cylindrical or slightly convex
pulley on the spindle, a cylindrical or slightly convex tightening pulley placed
angularly, a lever carrying the tightening pulley and made with or without a
reversible angular arm, and with a starting treadle arm, and a plate connected to the
lever and sliding and catching on the rail and made with or without a projection to
grip the belt against the spindle pulley, or instead of such sliding plate, a vertical rod
connected to the lever and catching on an upper rail in connection with a movable
detector carrier, the several parts being constructed arranged and operating substan-
tially as hereinbefore described.
Dated this Twenty-second day of August 1890.
EDMUND HUNT,
Applicant's Agent.