Improvements in Stop Motions for Drawing Frames.
Year: 1888

page_text: Date of Application, 1st Feb., 1888
Complete Specification Left, 27th Oct.. 1888
Complete Specification Accepted 30th Nov., 1888
PROVISIONAL SPECIFICATION.
Improvements in Stop Motions for Drawing Frames.
I HENRY BERNOULLI BARLOW, of 17 St. Anns Square Manchester in the County
of Lancaster Patent Agent do hereby declare the nature of said Invention for
IMPROVEMENTS IN STOP MOTIONS FOR DRAWING FRAMES, which Invention has been
communicated to me from abroad by Jeremiah Mahoney of Chicopee Falls
Massachusets in the United States of America Carder and Frederick Allen Leigh of
Boston Massachusets aforesaid Engineer, to be as follows:
This invention relates to the stop motions and more particularly to front stop motions
of drawing frames and the object of the Invention is to improve the stop motion and
to insure the automatic stoppage of the frame in the event of the sliver breaking or
failing or becoming either lighter or heavier than required.
The chief feature of novelty consists in the use and application of an extra lever
working in conjunction with and operated by the ordinary stop motion lever as at
present employed in the well known Mason's Drawing Frame.
A convenient arrangement of parts for the purposes of this Invention consists in
pivoting the extra lever in a bracket fixed on the bed or frame of the machine. The
extra lever is placed parallel or thereabouts with the ordinary stop motion lever
and the ends of both levers are preferably notched and lie in the ordinary bridle or
equivalent fixed upon the rocking shaft which is in connection with the knocking off
motion. Near the other end the extra lever has on its upper.side a pin which projects
over the ordinary stop motion lever or vice versa the latter may carry the pin which
would project below the under side of the extra lever.
Both levers are balanced by means of adjustable weights to suit the fibre being
drawn in such manner that when the frame is working properly the ends of the levers
stand clear of the path traversed by the oscillating bridle; but in the event of the
sliver breaking or failing or becoming attenuated the trumpet mouth through which it

page_text: passes rises thereby depressing the notched end of the ordinary lever which thus
comes against the bridle, checks the motion of the rocking shaft and knocks off the
machine.
Similarly when the trumpet mouth becomes choked by a lump or thickness in the
sliver the trumpet mouth end is depressed and the notched end of the ordinary lever
is raised the effect of which is by means of the pin on one of the levers to depress the
notched end of the extra lever whereby the movement of the oscillating bridle is
checked and the machine knocked off as above described.
The improved stop motion may be applied to other drawing frames as well as to
Mason's drawing frames as hereinbefore mentioned.
1
T
1000

page_text: Improvements in Stop Motions for Drawing Frames.
I HENRY BERNOULLI BARLOW of 17 St. Anns Square Manchester in the County of
Lancaster Patent Agent which Invention has been communicated to me from abroad
by Jeremiah Mahoney of Chicopee Falls, Massachusetts in the United States of
America Carder and Frederick Allen Leigh of Boston Massachusetts aforesaid
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 :-
This invention relates to the stop motions and more particularly to front stop motions
of drawing frames and the object of the Invention is to improve the stop motion and
to insure the automatic stoppage of the frame in the event of the sliver breaking or
failing or becoming either lighter or heavier than required.
The chief feature of novelty consists in the use and application of an extra lever
working in conjunction with and operated by the ordinary stop motion lever as at
present employed in the well known "Mason's " Drawing Frame.
A convenient arrangement of parts for the purposes of this Invention consists in
pivoting the extra lever in a bracket fixed on the bed or frame of the machine. The
extra lever is placed parallel or thereabouts with the ordinary stop motion lever and
the ends of both levers are preferably notched and lie in the ordinary bridle or
equivalent fixed upon the rocking shaft which is in connection with the knocking off
motion. Near the other end the extra lever has on its upper side a pin which projects
over the ordinary stop motion lever or vice versa the latter may carry the pin which
would project below the under side of the extra lever.
Both levers are balanced by means of adjustable weights to suit the fibre being
drawn in such manner that when the frame is working properly the ends of the levers
stand clear of the path traversed by the oscillating bridle but in the event of the sliver
breaking or failing or becoming attenuated the trumpet niouth through which it
passes rises thereby depressing the notched end of the ordinary lever which thus
comes against the bridle, checks the motion of the rocking shaft and knocks off the
machine.
Similarly when the trumpet mouth becomes choked by a lump or thickness in the
sliver the trumpet mouth end is depressed and the notched end of the ordinary lever
is raised the effect of which is by means of the pin on one of the levers to depress the
notched end of the extra lever whereby the movement of the oscillating bridle is
checked and the machine knocked off as before described.
The improved stop motion may be applied to other drawing frames as well as to
Mason's drawing frames as hereinbefore mentioned.
And in order that this Invention may be fully understood and readily carried into
effect I will describe the accompanying two sheets of Drawings reference being had to
the figures and letters marked thereon.

page_text: Figure 1 is a side elevation Fig. 2 a plan and Fig. 3 an end view of the improved
stop motion for drawing frames. Fig. 4 is a similar view to Fig. 1 but showing the
parts in the relative positions which they occupy, when the sliver breaks fails. or
becomes attenuated and Fig. 5 is a similar view showing the positions which the parts
take when the trumpet mouth becomes choked by a lump in the sliver.
In these views.- a is the ordinary stop motion lever which is fulcrumed at upon
a stationary bracket b and carries the plate e with the trumpet mouth c¹ through which
the sliver passes; d is the adjustable weight for balancing the lever a and keeping its
notched end clear of the oscillating bridle e which is fixed on the rocking shaft f. The
parts above described constitute the ordinary stop motion as employed prior to this
Invention in the well known "Mason's "Drawing Frame.
The extra lever g employed according to the present improvements is fulcrumed
at on a stationary bracket and is balanced by the adjustable weight i. The end of
this lever is also notched and lies in the bridle e and on the lever is fixed a pin or
stud which projects over the upper side of the lever a. When the frame is working
properly the notched ends of both the levers a and g lie clear of the path traversed by
the oscillating bridle e and the parts occupy the positions shown in Figs. 1, 2 and 3
but when the sliver breaks or fails or becomes attenuated the trumpet mouth c¹ on
the plate crises and the long arm of the lever a falls into the position shown in Fig. 4
so that its notched end comes against the hridle e thereby checking the rocking shaft f
and knocking off the machine.
In the other case when a lump or thickness in the sliver chokes the trumpet mouth c¹
and the plate e is pulled down the long arm of the lever a in rising comes against the
ping thereby depressing the notched end of the lever g as shown in Fig. 5 and by it
checking the bridle e and rocking shaft and so knocking off the machine.
Having now particularly described and ascertained the nature of this said Inven-
tion and in what manner the same is to be performed I declare that what I
claim is―
1. The combination with the ordinary lever of a stop motion arranged substantially
as specified, of an extra lever working in conjunction with and operated by said
ordinary lever to knock off the machine when the trumpet mouth becomes choked by
a lump or thickness in the sliver.
2. The combination with the fulcrumed balanced lever a which carries the trumpet
mouth through which the sliver passes and the bridle e and rocking shaft for their
equivalents in connection with the knocking off motion, of the extra fulcrumed balanced
lever and the pin yl or its eqvivalent substantially as and for the purposes herein
described and as illustrated by the Drawings annexed.
g
Datad this Oth love of Outahan 1000