Year: 1897

page_text: A communication from HARRIET RUTH TRACY of 3 Ruo Angusto Vacquerie, Paris, in
the Republic of France..
I, ALFRED JULIUS BOULT of 111 Hatton Garden, in the county of Middlesex,
Chartered Patent Agent, 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 :-
The object is to produce a revoluble loop-taker or shuttle adapted, when rotated' in
one direction to form one kind of stitch, as a lock-stitch, and when rotated in the
opposito direction, to form another kind of stitch, as a chain-stitch or a locked-chain
stitch; furthermore to produce a support for loop-takers, so constructed as to permit
the free passage of the loop of the needle-thread around the loop-taker which will
retain the loop taker securely against vertical or lateral displacement; which will
effectually prevent the soiling or entanglement of the thread, and which will ensure
smooth and even running of the loop-taker.
In the drawings,
Fig. 1 is a side view of a sewing machine embodying my invention;
Fig. 2 is a side view of a loop taker and its support; and,
Fig. 3 is a sectional view of one of the wheels for supporting the loop-taker.
In these drawings A is a reversibly-revoluble shuttle provided with three peripheral
openings a the terminals of each of which form at each opening a pair of opposing
hooks a a³ of different size and shape, of which the hook a is adapted to engage a
loop of the needle-thread Band to carry it entirely around the loop-taker to enclose a
second or lower thread to form a lock-stitch and the hook a³ to engage a loop of the
needle-thread and to carry it through a preceding loop to form a chain-stitch or to
engage a lower thread to form a locked chain-stitch, the change from one kind of
stitch to the other being effected by simply reversing the direction of rotation of the
loop-taker.
Ĉ represents the rollers by which the loop-taker is sustained. These are provided
in their peripheries with grooves c of a size to receive the periphery of the loop-taker
without binding.
In the present embodiment I illustrate four rollers though any desired number
may be employed, according to the work to be done and the machine employed and
these rollers are so disposed with relation to the hooks that at no time in the rotation
of the loop-taker will any two of the hook-openings be over or in juxta-position with
two of the rollers, whereby any jar of impact between the hooks and the rollers is
obviated.
Projecting from a depending plate D, attached to the work-plate E, are shafts d
upon the ends of which the rollers C are mounted, secured by screws d².
Rotary motion is imparted to the loop-taker in either direction, according to the
stitch to be made and in any suitable way, as by pins F on the shaft G, to be
introduced into openings in the loop-taker and withdrawn therefore alternately to give
motion and permit the passage of a loop of the needle-thread around it, the relative

page_text: movements of needle and loop-taker being suitably timed on working in either
direction. Ready access is afforded to the loop-taker and its removal rendered easy
by the support here described, as by removing one of the rollers C the loop-taker can
easily be removed for the purpose of cleaning or for substituting one loop-taker for
another.
Having now particularly described and ascertained the nature of this
invention, as communicated to me by my foreign correspondent, and in what manner
the same is to bo performed; I declare that what I clain is-
1. A rotary loop-taker having its periphery divided into an arbitrary number of
parts by hook-openings adapted to receive a loop of a needle-thread, the said loop-taker
being peripherally guided by supports so disposed with relation to the said openings
as to prevent the simultaneous juxtaposition of two or more of the openings with the
supports.
2. A rotary loop-taker having its periphery divided into an arbitrary number of
equal parts by hook-openings adapted to receive a loop of a needle-thread, the said
loop-taker being peripherally supported upon a series of rolls, the supporting points
of said rolls being separated by distances equal to the distance between any two
hook-openings of the loop-taker, whereby two or more of the hook-openings are
prevented from simultaneous juxtaposition with the supporting rolls, and means for
operating the said loop-taker.
3. A revoluble loop-taker having a plurality of hook-openings in combination with
rollers for supporting and guiding the loop-taker, the said rollers being.
.so disposed
with relation to the hook-openings that at no time in the rotation of the loop-taker
will any two of the said openings be over or in juxtaposition with the rollers.
4. A reversibly-revoluble loop-taker, having a plurality of oppositely-disposed
hooks, in combination with peripherally-disposed rollers for supporting and guiding
the loop-taker..
5. A reversibly-revoluble loop-taker having a plurality of hook-openings in
combination with rollers for supporting and guiding the loop-taker the said rollers
being so disposed with relation to the hook-openings that at no time in the rotation
of the loop-taker will any two of the said openings be over or in juxtaposition with
rollers.
6. A loop-taker having a plurality of peripheral recesses, the terminals or ends of
each recess forming at ench opening a pair of opposing hooks of different size and
shape, one of the hooks of each pair being adapted when the loop-taker is rotated in
one direction, to engage a loop of the needle-thread and to carry it entirely around
the loop-taker to enclose a second thread to forin a lock-stitch and the other hook of
the pair being adapted when the loop-taker is rotated in the opposite direction, to
engage a loop of the needle-thread and to carry it through a preceding loop to form a
chain-stitch or to engage a lower thread to form a locked-chain stitch and
peripherally-disposed rollers for supporting and guiding the loop-taker.
Dated this 23rd day of June 1897.
BOULT & WADE,
Agents for the Applicant.