Improvements in Weft Stop Motions for Weaving Looms and in Shuttles therefor.
Year: 1896

page_text: Comalata Conn
Date of Application, 9th Nov., 1896
2002
400G
PROVISIONAL SPECIFICATION.
Improvements in Weft Stop Motions for Weaving Looms and in
Shuttles therefor.
I, FRANK CLAPHAM, Wheelwright, of Fison's Shed, Manchester Road, Bradford,
in the County of York, Spinner and Manufacturer, do hereby declare the nature
of this invention to be as folows:-
The object of this invention is to automatically stop weaving looms imme-
diately before the weft is finished..
For this purpose I mount a lever or catch piece on the shuttle peg or other
convenient part of the shuttle close to the shoulder or head of the peg or tongue..
One end or arm of this lever is arranged to bear upon the weft close to the bottom
of the bobbin or its equivalent and by this means the other end or arm of said lever
is held approximately flush with the upper face of the shuttle. When however
the weft is approximately all removed from the bobbin the end of the lever
supported theby falls towards the shuttle peg and this causes the other end of
said lever to more or less project above the top of the shuttle. This projecting
end of the lever on the shuttle is arranged to strike a detent located say above
the one to one of the shuttle boxes and disengages it from a catch provided.
to hold a stop piece on the going part clear of the stop lever of the loom. When"
thewever this catch is released in this way the said stop piece moves under the
influence of a spring or its equivaleat into position to strike the stop lever when
the going part is brought forward and thereby stops the loom.
บ
The said catch may be connected to the stop piece by a cord passing over a
pulley or pulleys on the going part or they may be connected by a lever or levers
or in any other convenient way.
As a modification the projecting arm of the lever on the shuttle may be arranged
to engage or operate a contact piece so as to complete an electric circuit, whereby
the loom inay be stopped.
Instead of stopping the loom by the ordinary stop lever the weft fork or any
other convenient part may be used.
Dated this 7th day of November 1900
DRACUP & NOWELL,
Bradford. Patent Agents,
COMPLETE SPECIFICATION.
Improvements in Weft Stop Motions for Weaving Looms and in
Shuttles therefor.
I, FRANK CLAPITAM, Wheelwright, of Fison's Shed, Manchester Road, Bradford,
n the County of York, Spinner & Manufacturer, do hereby declare the nature
[Price 8d.]

page_text: of this invention and in what maner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
The object of this invention is to automatically stop weaving looms imme
diately before the weft is finished.
For this purpose I mount a lever or catch piece on the shuttle peg or other
convenient part of the shuttle close to the shoulder or head of the peg or tongue.
One end or arm of this lever is arranged to bear upon the weft close to the bottom
of the bobbin or its equivalent, and by this means the other end or arm of said lever
is held approximately flush with the upper face of the shuttle. When however
the weft is approximately all removed from the bobbin the end of the lever
supported thereby falls towards the shuttle peg and this causes the other end of
said lever to more or less project above the top of the shuttle. This projecting
end of the lever on the shuttle is arranged to strike a detent located say above
the entrance t. one of the shuttle boxes and disengages it from a catch provided
to hold a stop piece on the going part clear of the stop lever of the loom. When
however thie catch is released in this way the said stop piece moves under the
influence of a spring or its equivalent into position to strike the stop lever when
the going part is brought forward and thereby stops the loom.
To fully describe my invention reference is made to the accompanying sheet of
drawings in which similar letters of reference indicate corresponding parts in
each of the parts.
Figure 1 represents a front view of such parts of a loom as are necessary to
illustrate the application of my improvements.
Figure 2, is a plan view of the same.
Figure 3, is a side view of the same with the shuttle box in section
Figure 4, is a side view of the spindle guard and parts attached on a larger scale.
Figure 5, is a section of the same on the broken line a, b, in which the said
detent is shewn supporting the said catch.
Figure 6, is a similar view shewing the détent disengaged from the catch.
Figure 7, represents a plan view of the end of the shuttle fitted with the said
lever or catch piece
Figure 8, is a side view of the same with the catch piece shewn projecting
above the shuttle.
Figure 9, is a section on the line y, z, Figure 7.
Figure 10, is a section on the line w, z, Figure 8, with the catch piece flush with
the top of the shuttle and Figure 11, is a similar view with the catch piece
projecting above the top of the shuttle.
The side frame A, the shuttle box B, the sword C, the going part D, and stop
lever E, are of any ordinary construction.
On the peg F of the shuttle F is fixed the attachment F3 to which the catch
piece is pivoted by the pin F, When the bobbing G is full of weft G (Figure 10)
the end F of the catch piece rests upon the weft and the catch piece is held flush
with the shuttle; but as soon as the weft is pulled off the bobbin the end of the
lever supported by it being the heavier end drops to the position shewn in
Figures 8 and 11, and consequently the other end F projects above the shuttle.
The amount of weft left on the hobbin when this takes place depends upon the
distance the end Fe projects over along the bobbin.
A slot H is formed in the side of the spindle guard H and the detent lever J
is pivoted in it by the pin Ja and the lower end J projects below into the path
of the projection F. The detent lever, when in the position shewn in Figure 5,
sports the inner end K of a catch lever K pivoted on the screw K3 fixed in the
side of the spindle guard. The other end K of the lever K is connected by
the rod K to the arm L of the bell crank lever L3 pivoted by the stud L3 to the
front of the going part D. The other arm L of the lever L is connected by the
rod L to the stop piece LA pivoted by the screw 'L', to the underside of the going
part. A spring is provided stretched, between the stud M on the going part
and the arm L of the lever L³,

page_text: The parts are so relatively arranged that as soon as the projection F7 on the
shuttle rises sufficiently high to strike the lower end of the detent lever J and
release its upper end from the lever Ks the inner end of the latter under the
influence of the spring N falls and the end L of the stop piece is moved by the
connecting parts, opposite the stop lever E. Consequently when the going part
moves forward the stop piece engages the stop lever E and presses it out of the
usual notch As leaving it free to spring inwards to stop the loom in the usual
way. When the loom is re-started the end K' of the lever K2 is pressed down to
allow the detent lever to fall back to its normal position and support the inner
end of the lever.
Any other mechanical means may be employed to connect the lever K³ with the
stop piece L or its equivalent.
Instead of stopping the loom by the ordinary stop lever the weft fork or any
other convenient part may be used.
To keep the automatic stop motion out of action I provide the cord O connected
to the end K (or an equivalent part) of the lever K2. This cord is passed round
a pulley 03 mounted near the bottom of the going part close to the centre of
oscillation and then passes up and is attached to the vertically sliding piece. P
fixed to the breast beam A. When the stop motion is not required in action
the slide P is raised to tighten the cord O and prevent the lever K³ from moving
when the detent is disengaged from it. To put the motion into operation again
the slide is let down to sufficiently slacken the cord.
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:
1. The combination with a weaving shuttle, of the catch piece or lever F,
substantially as herein shewn and described and for the purpose specified.
2. A weft stop motion constructed and arranged substantially as herein shewn
and described.
Dated this 9th day of August 1807
DRACUP & NOWELL,
Bradford. Patent Agents