A Improvements in Sewing Machines.
Year: 1892

page_text: Date of Application, 13th Feb., 1892
Complete Specification Left, 14th Nov., 1892-Accepted, 17th Dec., 1892
A
Improvements in Sewing Machines.
We CHARLES WILLIAM ALLEN and THOMAS ROBERT ROSSITER both of the
firm of Chappell Allen & Co. of Weare Street Bristol Gloucestershire Corset
Manufacturers do hereby declare the nature of this invention to be as follows:-
This invention has for its object to provide a sewing machine by which three rows
of stitching can be done at one operation. According to the said invention there is
a needle bar provided with means for holding three needles in relative positions such
that they are respectively situated so that they are at a distance apart laterally
corresponding to the distance apart of the rows of stitching to be made. The cloth
plate is provided with openings corresponding in number and position to the needles
so that the needles pass therethrough. Beneath the cloth plate are rotary or
oscillating shuttles in number corresponding to the needles and openings in the
cloth plate and with the needle slot of each shuttle case in a line with the corre-
sponding needle and opening. The several shuttles can be driven by an under
shaft provided with gear wheels which engage with a wheel on the axis of one of
the shuttle carriers or with wheels on the axes of two of the shuttle carriers
and the other shuttle carrier or other shuttle carriers can be driven by gear
wheels on its axis or their axes engaging with a corresponding wheel or wheels on
the axis or axes of the carrier or carriers driven as aforesaid from the under
shaft.
$
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Sewing Machines.
'
We CHARLES WILLIAM ALLEN and THOMAS ROBERT ROSSITER both of the
firm of Chappell Allen & Co. of Weare Street Bristol Gloucestershire Corset
Manufacturers 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 has for its object to provide a sewing machine by which three
rows of stitching can be done at one operation. According to the said invention
there is a needle bar provided with means for holding three needles in such relative
positions that they are at a distance apart laterally corresponding to the distance
apart of the rows of stitching to be made. The cloth plate is provided with
openings corresponding in number and position to the needles so that the needles
pass therethrough. Beneath the cloth plate are rotary or oscillating shuttles' in
number corresponding to the needles and openings in the cloth plate, and with the
needle slot of each shuttle case in a line with the corresponding needle and opening
in the cloth plate.
•
The several shuttles can be driven by an under shaft provided with gear wheels
which engage with a wheel on the axis of one of the shuttle carriers or with wheels
carrier or other
on the axes, of two of the shuttle, carriers and the other shuttle carrie
..

page_text: shuttle carriers can be driven by gear wheels on its axis or their axes engaging with
a corresponding wheel or corresponding wheels on the axis or axes of the carrier or
carriers driven as aforesaid from the under shaft.
And in order that our said invention may be fully understood we shall now proceed
more particularly to describe the same and for that purpose shall refer to the several
figures on the annexed drawings the same letters of reference indicating corresponding
parts in all the figures.
Figure 1 is a side elevation of so much of a sewing machine as is necessary to
illustrate our invention.
Figure 2 is a front elevation of the same.
Figure 3 is a plan of the cloth plate with the shuttle cover plates opened out to
shew the shuttles below and
Figure 4 is a view of the underside of the cloth plate shewing the shuttle driving
mechanism.
A is the overhanging arm or goose-neck of the machine containing the shaft
which operates the needles, and B is the head thereof containing the needle bar C
and the bar D of the presser foot E. On the lower end of the needle bar ( is
fixed a block F containing three holes in which are fixed by screws 9 9³ ³ three
needles G G G3 so that they are raised and lowered simultaneously with the said
needle bar. The needles may be arranged in any convenient position relatively to
each other to suit the distance between the lines of stitches to be made. In the
arrangement shewn in the drawing two of the needles (GG) are situated side by
side in a line parallel to the needle driving shaft whilst the third needle (G³) is
arranged about midway between but at the rear of the needles G G' by which
arrangement three rows of stitches may be made closer together than could be the
case if the three needles were arranged side by side in the same line. The needles
are supplied with thread from three separate spools or bobbins mounted on studs
carried on the goose-neck or arm A, or on any other suitable part of the machine
the said threads passing from the spools or bobbins through tension devices as
shewn at H H H and 1 1 13 to guide eyes K K K in a "slack take up" arm L
operated by a cam on the needle driving shaft, and thence to the eyes of the needles.
Beneath the cloth plate M are three rotary (or oscillating) shuttles N N'N' one
for each needle G G G³. These shuttles are contained in cases O O'O' the
bottoms P P P³ of which are capable of rotation (or of oscillation) and constitute
the shuttle carriers they being provided with projections which engage
corresponding projections ce² c³ on the shuttles so that when the bottoms or shuttle
carriers P P P are rotated (or oscillated) they carry the shuttles with them. The
shuttle carriers are driven from a shaft Q mounted in bearings beneath the cloth
plate which shaft may receive motion from the needle driving shaft by cranks and a
connecting rod or in any other suitable manner. On the shaft Q are two bevel
wheels R R' gearing respectively with corresponding wheels S S fast on the axes of
the shuttle carriers P P so that when the shaft Q is rotated or oscillated the
shuttles N N' will be caused to operate. On the axis of the shuttle carrier P' is
also fixed a spur wheel T gearing with a similar wheel T³ fast on the axis of the
shuttle carrier P by means of which gearing movement is given to the shuttle N*
simultaneously with the shuttles N N'. The presser foot E and needle plate U
have holes therein corresponding in position to the position of the needles, slots
being also provided in the sides of the shuttle cases 00' 0³ to permit of the needles
descending to present loops of thread to be engaged by the shuttle threads. The
material being sewn may be fed forward in the ordinary manner.
с
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
In a sewing machine for simultaneously making-three rows of stitching, a needle
11:

page_text: corresponding to the distance apart of the rows of stitching to be made and a
correspondingly perforated needle plate and presser foot and a rotary or oscillatory
shuttle for each of the needles all arranged substantially as hereinbefore described.
Dated this 14th day of November 1892.
J. H. JOHNSON & Co.,
Agents.