improvements in sewing machines.
Year: 1899

page_text: improvements in sewing machines.
We, GEORGE HARRY SCETRINI, of 82, Barnby Street, Stratford, in the County
of Essex, Mechanic, and HERBERT KYNASTON BRIDGER, Gentleman, of 2, Danes
Inn, Strand, in the County of London do hereby declare the nature of this inven-
tion to be as follows:-
This invention for improvements in sewing machines relates to that class of
machine in which a barbed needle is advanced through the work, the thread is
placed in the barb of the needle and then the needle draws a loop through the
work; and has for its object an improved shuttle. This invention consists in
making the shuttle hook in two parts that are opened out after the needle has
taken the loop and act to cast off the loop.
In one way of carrying out this invention in a rotary shuttle the two parts of
the hook are hinged together behind the points on the radial screw or pin that
secures them to the main body and are pressed apart by a V spring loosely held
at their angle to the main body between the two hook parts by a second screw.
The two hook parts work in a race in the shuttle box that normally keeps the
two hook parts together to form a single point but the race is widened out at
one part so that after the hook has taken the loop the two parts are forced out-
ward by the spring to open out the loop and cast it off the needle the race
again bringing the two parts together after this operation. It will be evident
that the spring may be replaced by a second race or cam path. The shuttle is
also provided with a secondary hook situated behind the divided hook to facili-
tate the spreading of the thread to enable it to pass over the body of the shuttle
hook.
Datod thie 8th day of June 1890
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.
Improvements in Sewing Machines.
We, GEORGE HARRY SCETRINI, of 82, Barnby Street, Stratford, in the County
of Essex, Mechanic, and HERBERT KYNASTON BRIDGER, Gentleman, of 2, Danes
Inn, Strand, in the County of London, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
This invention. for-improvements in sewing machines relates to that class of

page_text: machine in which a barbed needle is advanced through the work, the thread is
placed in the barb of the needle and then the needle draws a loop through the
work; and has for its object an improved shuttle. This invention consists in
making the shuttle hook in two parts that are opened out after the hook has
taken the loop and act to cast off the loop.
In one way of carrying out this invention in a rotary shuttle the two parts of
the hook are hinged together behind the points on the radial screw or pin that
secures them to the main body, and are pressed apart by a V spring loosely held
at the angle to the main body between the two hook parts by a second screw.
The two hook parts work in a race in the shuttle box that normally keeps the
two hook parts together to form a single point but the race is widened out at
one part so that after the hook has taken the loop the two parts are forced out-
wards by the spring to open out the loop and cast it off the needle the race
again bringing the two parts together after this operation. It will be evident
that the spring may be replaced by a second race or cam path. The shuttle is
also provided with a secondary hook situated behind the divided hook to facili-
tate the spreading of the thread to enable it to pass over the body of the shuttle
hook.
In the accompanying sheet of illustrative drawings: Figs. 1 and 2 are front
elevations of a shuttle and its box constructed according to this invention, and
showing the two parts of the shuttle hook closed and open respectively and
Fig. 3 is a side elevation of the same. Fig. 4 is a front elevation of the shuttle,
and Fig. 5 is a side elevation partly in section of the same.
The shuttle body a of any suitable construction works in the shuttle box b
also of any ordinary construction.
C
The hook of the shuttle is separate from the body a and is made in two parts c
hinged together behind their points upon the set screw d that screws radially
into the body and secures the parts c to the body. One of the points may be
arranged slightly behind and when the two points are together so as to lie
within the other point so that a perfect point is obtained without any liability
of the thread to catch. A U-spring e is held in place between the parts c near
the pivot d by the set screw / screwing into the main body a and its two arms
extend towards the points c and bear upon them to press them outwards. The
race of the shuttle box when the shuttle is in place bears for the greater
part of its circumference upon the outsides of the parts e and keeps them pressed
together to form a single point. Just after the position in which the hook
takes the loop the race g is widened out at h so that at this point the spring e
forces the parts apart to open out the loop and cast it off the needle. The
race g also acts to bring the parts c together again. The shuttle is also provided
with a secondary hook i situated behind the hook c to facilitate the spreading of
the thread to enable it to pass over the body of the shuttle hook.
It will be seen that in taking the loop, the shuttle passes it backwards up the
shank of the needle as it widens it out, so that the loop is forced perfectly clear
of the barb of the needle.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that
what we claim is:-
-
1. In sewing machines, a shuttle provided with a bifurcated point adapted
to be opened out.
2. In sewing machines, a shuttle consisting of a shuttle body having a point,
an additional point pivoted to the shuttle body and adapted to form a single
point or an opened out bifurcated point.
3. In sewing machines, a shuttle consisting of a shuttle body and two detach-
able points pivoted behind the points to the shuttle body and adapted to be
forced together to form a single point or to be opened out.
4. In a sewing machine the combination with a shuttle having a bifurcated

page_text: point adapted to be opened out, of a shuttle race provided with inclines to operate
the point.
5. The improved shuttle for sewing machines,. substantially as described with
reference to the drawings.
Dated this 6th day of April 1900.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.