winding machines.
Year: 1888

page_text: [Communicated from abroad by WILLIAM COCHRAN SANFORD, of Amsterdam, New
York, United States of America, Manufacturer.]
winding machines.
I, HENRY HARRIS LAKE of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, 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 an improved automatic apparatus by which the threads of
spinning, doubling twisting and winding machines are caught, and rigidly held
between a vibrating nipping plate and a stationary nipping plate whenever a breakage
of the same occurs between the feed rollers and the spinning or winding mechanism
and the object of the said invention is to prevent waste of material from a continued.
feed of the thread after a breakage has taken place.
In the accompanying drawings
Figure 1 represents in vertical section a portion of a spinning frame with my
invention shown infelevation.
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Figure 2 is a front view of my invention, the operating lever which rests upon the
thread being cross sectioned.
Figure 3 is a vertical section on the line x, x of Figure 1 ; and
Figure 4 is a horizontal section on the line y, y of Figure 3.
In the Drawings A represents a portion of a spinning frame provided with spools a, a¹
and feed rollers a², a³. B is a ring rail provided with a ring b for the spindle bl carrying
a bobbin 62 for receiving the united threads c, c². D is my improved stopping
mechanism which comprises a base plate d, thread nipping and slotted guide plate d₁,
thread nipping plate E, operating lever F and a balance weight fas shown, or their
equivalents.
The plated formed on and with the plate d, is provided with a vertical slot ď³, and
;

page_text: a headed pivo td³, on which latter the thread nipping plate E is hung. The said nipping
plate E is provided with an upright jaw e¹ and an arm e³ having a radial or nearly
radial slot e. Through the slot e the end f¹ of the operating lever F is passed. The
operating lever F is of a suitable curved shape, and is provided with a transverse
hook, which rests at C upon the threads between the feed rollers a², a³ and the
central guide a of the spinning frame. The said operating lever is fastened by means
of a set screw f³ to the balance weight through which its end f¹ is passed. The
balance weight fis pivoted between two vertical lugs a, a of the plate d by means of
a pin or short journals, at right angles to the pivot d³ of the nipping plate E and it
almost balances the weight of the lever E while the hook rests at Cupon the several
united threads. But when the thread is broken and the lever F is deprived of its support
at C, the lever drops as illustrated by dotted lines in Figure 1, and the weight f
assumes a position which is also shown by dotted lines, thereby allowing the full
weight of the lever F to be utilized in vibrating the thread nipping plate E in a
direction at right angles to the travel of the threads. When the front portion of the
operating lever drops, the rear portion f¹ swings up, and by the aid of the slotted
extension e², e3 of the thread nipping plate E, moves the same upon its pivot d³ until
the jaw e¹ has passed and covered the slot d², in which position, the plate E, and its
jaw e, in conjunction with the guiding and nipping plate d¹ seizes or nips, and holds
the threads as illustrated in Figure 4 so as to stop their further passage toward the
feed rollers. It will be understood that the nipping plates above described are dull
on their opposing or passing edges, and that the ends of the broken threads are caught
and held between the said edges without being cut; the action being such that, they
are firmly held so that no more thread can be drawn from the spools by the feed
rollers until the nip is caused to cease. In their action the nipping plates resemble a
pair of shears or scissors, with one limb stationary and the other vibrating, but both
limbs having dull edges and incapable of cutting.
The broken thread being re-united and the hook f' being placed upon it, the
resulting upward motion of the front portion of the lever F and downward motion of
the rear portion 1 of the same, moves the thread nipping plate E back to its normal
position as shown in Figure 2 and the threads c, c' are released and allowed to move
toward the feed rollers. Thus the slightest loss of thread by continued feed after
breakage is avoided, as the breaking of the thread and its checking by this device are
simultaneous.
This invention avoids loss of labor and delay in the removal of wasted thread.
It will be apparent that the above described invention can be attached to frames of
either old or new construction without removal or change in the construction of the
feed rollers, or other parts of the machines, as is frequently required in the adoption
of other stopping devices.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to me
by my foreign correspondent I declare that what I claim is :-
First The combination of the automatically vibrating, nipping plate E, formed
with a jaw e¹ and a slotted extension e³, e³ and the nipping plate d formed with the
slot d², substantially as, and for the purpose, described.
Second The vibrating nipping plate E and a suitable gravitating lever for causing
the plate E to vibrate when the threads break, in combination with a nipping and
guiding plate d', the said vibrating plate being pivoted to the plate d' so as to move
on its pivot in a transverse direction to that in which the threads are fed to the
twisting mechanism, and thereby causing the broken ends of the threads to be moved
laterally between itself and the plate d', and nipped firmly, substantially as described.
Third The combination of the vibrating nipping plate E, formed with a jaw e¹ and
an extension e³ having a slot e², the nipping and guiding plate d³, and the gravitating
lever F, the latter pivoted at a right angle to the direction in which the plate E moves
substantially as and for the purpose described.
Fourth-The weight pivotted to the plate d, the gravitating lever F hooked or bent

page_text: on its forward end, and having its rear end passed through the weight above the
pivot thereof, the vibrating nipping plate E pivotted at d³ and the guiding nipping
plate d', all combined and operating substantially as described.
Fifth The vibrating nipping plate E formed with a jaw e¹ and an extension e³
having a slot e², the nipping plate d', provided with a pivot d³ on which the plate E
is hung and vibrated and with a slot d², the lever F, and the weight of the said lever
having its rear end passed through the pivotted weight and into the slot e³ of the
plate E, in a direction at a right angle to the pivot of the weight and the movement
of the plate E, and having its front end adapted to rest upon the threads being fed to
the twisting machine, the whole combined and operating substantially as, and for the⚫
purpose, described.
D
047 1
T
1000