IMPROVEMENTS IN SEWING MACHINES
Year: 1881

page_text: PROVISIONAL SPECIFICATION left by the said Frederick Cutlan at the
Office of the Commissioners of Patents on the 1st October 1881.
FREDERICK CUTLAN, of Cardiff, in the County of Glamorgan, "IMPROVEMENTS
IN SEWING MACHINES."
My Invention consists of improvements in the action of the shuttle and also
the feed in sewing machines, and is specially useful for "sew-round" boots and
shoes.
In carrying out my Invention I adopt mainly the following arrangement:—
The shaft working under the table (which is preferably circular) is provided
with a toothed wheel into which gears a quadrant centred below said shaft. The
lower part of quadrant below this centre is provided with a roller working
preferably in a grooved cam. On one side of toothed wheel which gears into the
quadrant a shuttle carrier is attached, said carrier carrying the shuttle. In action,
on the needle coming down into position, the shuttlo is thrown forward through
the loop by the action of the quadrant on the toothed wheel, said quadrant being
operated by the cam. On the needle rising the shuttle returns to its normal
position and the stitch is complete.
In feeding the work I employ a variable cam which operates upon the lower or
under feed action. Against one of the cam surfaces presses a cranked lever which
operates the feed, so that as the cam revolves the work is brought into position.
To this cranked lever is attached an arm terminating in a roller which acts upon
another cam surface regulating the length of stitch, same being determined by a
regulating screw which is operated as required. Attached to the said cranked
lever is another roller working on back of cam to allow for rise and fall for the
feed, said roller being kept on cam by spring or other suitable means.

page_text: My Invention consists in improvements in the action of the shuttle and also
the feed in sewing machines, and is specially useful for "sew round" boots and
shoes.
In carrying out my Invention I adopt substantially the following arrange-
ment:-
The shaft working under the table (which is preferably circular) is provided
with a toothed wheel into which gears a quadrant or sector centered below said
shaft. The lower part of quadrant below this centre is provided with a roller
working preferably in a grooved cam. On one side of toothed wheel which gears
into the quadrant a shuttle carrier is attached, said carrier carrying the shuttle.
In action, on the needle coming down into position, the shuttle is thrown. forward
through the loop by the-action-of-the-quadrant or sector on the toothed wheel, said
quadrant-being-operated by the cam. On the needle rising the shuttle-returns-to-
its normal position and the stitch is complete.
In feeding the work I employ a variable cam which operates upon the lower or
under feed action. Against one of the cam surfaces presses a cranked lever which
operates the feed, so that as the cam revolves the work is brought into position.
To this cranked lever is attached an arm terminating in a roller which acts upon
another cain surface regulating the length of stitch, same being determined by a
regulating screw which is operated as required. Attached to the said cranked
ever is another roller working on back of cam to allow for rise and fall for the
feed, said roller being kept on cam by spring or other suitable means.
Having thus far described the nature of the said Invention, and incidentally
intimated in what manner same is to be performed, I will now proceed by reference
to the accompanying Drawing to further and particularly describe and ascertain in
what manner the same is to be performed or carried out in practice.
DESCRIPTION OF THE DRAWING.
The Drawing shows elevation of my improvements. A, shaft; B, table (circular
as shown). On said shaft A is fitted toothed wheel C into which gears the sector
or quadrant D, said sector or quadrant being centered at E; F, roller working
in grooved cam G; H, shuttle; I, needle; K, roller running against cam L, as
shown; M, joint with spring at the back to press on cam; N, roller to run on cam;
O, joint of cranked lever O; P, screw to regulate length of stitch; Q, feed behind
the face plate.
Having now particularly described and ascertained the nature of the said 4
Invention, and in what manner the same is to be performed or put in practice,
I hereby declare that I claim the said Invention of "Improvements in Sewing

page_text: Machines," substantially as hereinbefore set forth and described and illustrated by
the accompanying Drawing.
In witness whereof, I, the said Frederick Cutlan, have hereunto set my hand
and seal, this Thirty first day of March, in the year of our Lord One
thousand eight hundred and eighty two.
Witness,
W. MAURICE WILLIAMS,
Solicitor,
7, Belvoir Street,
Leicester.
FREDERICK CUTLAN. (L.s.)