Improved Appliance for Cutting Thread, Twine, and the like in Sewing, Weaving, Packing, Sailmaking, and similar Operations.
Year: 1892

page_text: Date of Application, 14th Mar., 1592
Complete Specification Left, 12th Nov., 1892-Accepted, 17th Dec., 1892
PROVISIONAL SPECIFICATION.
Improved Appliance for Cutting Thread, Twine, and the like
in Sewing, Weaving, Packing, Sailmaking, and similar
Operations.
I, ERNEST PETERSEN of Kertch, Crimea, Russia, Engineer do hereby declare
the nature of this invention to be as follows:-
My invention relates to a simple and cheap appliance for cutting thread and
the like in sewing and similar operations, which appliance consists of a thin split
spring ring made of steel or other suitable material and slightly coned so as to fit
readily either on the finger or on a thimble, on which ring is fixed or formed a
small cutter consisting of a block of steel the inner part of which, next the ring.
is formed with a cutting edge by preference arranged at an angle of from 30° to 60°
to the plane of the ring and projecting at a right angle from the face thereof, so as
to conveniently cut the thread by passing this over it when sewing.
The outer face of the block is made of circular, oval, or other form so as to
project beyond and protect the cutting edge.
The ring is formed with a split at a point diametrically opposite the cutter block
and on each side of the split is formed a small downward projection having a small
knob or rounded or cylindrical head at the end, such knob or head being bent
slightly inwards so that when the ring pushed over a thimble such projections
catch with their knobs or heads over the base rim thereof and thus effectually
hold the ring in position with the cutter situated at the most convenient point of
the thimble for cutting the thread. When the ring is used directly on the finger
such projections with their knobs in pressing against the side of the finger also
effectually prevent it from slipping round, so as to keep the cutter in the proper
position.
For producing the split rings with the required degree of conicity either steel
strips with a slight amount of curvature may be cut out of a thin flat steel plate,
or a strip of steel may be so rolled in a well known manner as to have the required
amount of curvature.
Instead of making the ring with a split, it may be made with a loop opposite the
point where the cutter is fixed for affording the requisite elasticity, the downward
projections being formed on each side of the spring loop.
The ring may also be made of vulcanite in which case the cutter block can be
formed with two opposite projections of thin pliable metal so that they can be bent
over the edges of the ring for securing the block thereto.
According to another arrangement I make the split ring of wire instead of using
a steel band, and I form the block with an undercut groove or hole by which it is
threaded on to the wire until it is brought into the required position.
The ends of the piece of wire forming the ring are bent down and formed with
heads or knobs for securing it on the thimble as in the case of the steel band.
Dated this 14th day of March 1892.
ABEL & IMKAI,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improved Appliance for Cutting Thread, Twine, and the like
in Sewing, Weaving, Packing, Sailmaking, and similar
Operations.
I, ERNEST PETERSEN, of Kertch, Crimea, Russia, 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 :-
My invention relates to a simple and cheap appliance for cutting thread and the
like in sewing and similar operations, which appliance consists of a thin split spring
ring made of steel, slightly coned so as to fit readily either on the finger or on a
thimble, on which ring is fixed or formed a small cutter consisting of a piece of
steel the part of which, next the ring is formed with a cutting edge by preference
arranged at an angle of from 30° to 60° to the plane of the ring, and projecting at
a right angle from the face thereof, so as to conveniently cut the thread by passing
this over it when sewing.
The outer face of the piece is formed as a guard, for protecting the cutting
edge.
The ring is formed with a split at a point diametrically opposite the cutter and
on each side of the split is formed a small downward projection either curved at
the end or having a small knob or rounded or cylindrical head at the end, such
knob or head being bent slightly inwards so that when the ring is pushed over a
thimble, such projections catch with their bent ends knobs or heads over the base
rim thereof and thus effectually hold the ring in position with the cutter situated
at the most convenient point of the thimble for cutting the thread. In front the
ring is formed with an upward projection having a pointed hooked end which enters
one of the small indentations in the thimble and thus keeps the ring in position, and
prevents it from shifting or turning, even when there is no projecting rim on the
thimble. When the ring is used directly on the finger, the above named projections,
in pressing against the side of the finger also effectually prevent it from slipping
round, so as to keep the cutter in the proper position.
For producing the split rings with the required degree of conicity, either steel
strips with a slight amount of curvature may be cut out of a thin flat steel plate,
or a strip of steel may be so rolled in a well known manner as to have the required
amount of curvature.
Figs. 1 to 5 on the accompanying drawings shew the form of the appliance which
I prefer to employ. Fig. 1 shews a front view, Fig. 2 a perspective view, and
Fig. 3 shews a side view of the device as applied to a thimble; Fig. 4 shews a part
front view to an exaggerated scale, and Fig. 5 a section on line XX.
a is a split ring of steel, cut or stamped to the configuration shewn, that is to say,
with an upward projection b on which is formed the cutter c, and small hooked
downward projections d d on each side of the split.
The cutter is formed by stamping out a portion of the steel of the projection b
and bending it outward so as to project at an angle of about 60° the outer edge c
being again bent down so as to form a guard to the cutting edge c³ which is ground
sharp as shewn more clearly at Figs. 4 and 5.
The upper end of the projection is formed into a hook, which, when the
appliance is fitted on to a thimble as at Fig. 3, springs into one of the small
indentations of the thimble, so as to keep the ring from slipping up or down, while
the two hooked projections d d on the opposite side, in hooking over the rim of the
thimble, keep the ring from rising on that side. The ring being split and clastic,
it will readily accommodate itself to different sized thimbles. Or it may be worn
directly on the finger, when no thimble is used. On drawing sewing thread over
the cutting edge it will be at once cut.
It will be seen from the inclined position of the cutter that if a thread be drawn

page_text: over it in the direction shewn at e, Fig. 4, the cutter will cut the thread in a
slanting direction and thus form the necessary pointed end thereon required for
threading through the needle, thereby doing away with the tedious and injurious
operation of biting the thread sharp with the teeth. Moreover, owing to this
position of the cutter, it is enabled to cut the thread quite close up to the sewing,
and consequently this requires no subsequent trimming with scissors.
Fig. 6 shews a front elevation, and Fig. 7 a side view of a modified arrangement,
in which the cutter is formed by a stud c which is rivetted or otherwise fixed on
the ring a, being the cutting edge and c³ a front guard.
The projections d d on each side of the slit are in this case formed with small
knobs d¹ at their end, to facilitate the placing and removal of the ring.
Fig. 8 shews another modification in which the hooked projection b is dispensed
with, the cutter being formed by stamping out and bending down a portion of
the metal as in the first described construction.
In order to impart to the ring a the same amount of taper or conicity as the
thimble, the steel band for forming it is cut or stamped with a corresponding
degree of curvature, as shewn at Fig. 9.
Fig. 10 shews a form of the ring adapted to be fitted directly on the finger, for
use by weavers in working looms, for cutting the weft threads.
In this case the hooked point on the projection b is dispensed with, and the
projections & have knobs d' at their ends and serve to hold the ring in position on
the finger.
Having now particularly described and ascertained the nature of this inveu-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. An appliance for cutting thread and the like, consisting of a split steel ring a
on which is fixed or formed an obliquely placed cutter c, the cutting edge of
which is presented in an upward slanting direction, the ring being provided with a
downward projection d on each side of the slit, with a hook or knob for holding it
on to a thimble or a finger, substantially as described.
2. The improved appliance for cutting thread and the like combined and
operating substantially as herein described and shewn on the accompanying
drawings.
Dated this 12th day of November 1892.
6140
ADEL & IMRAI,
Agents for the Applicant.