An Improvement in Sewing Machines.
Year: 1891

page_text: Date of Application, 28th Feb., 1891
Complete Specification Left, 23th Nov., 1891-Accepted, 2nd Jan., 1892
PROVISIONAL SPECIFICATION.
An Improvement in Sewing Machines.
I WILLIAM BIRCH of Milton Street Iron Works Lower Broughton, Manchester
in the County of Lancaster, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to an improved device applicable principally to that class
of sewing machines employed by bleachers, calico printers and others for the purpose
of sewing together the ends of pieces of woven fabrics, wherein the "cloth-feed
employed consists of a revolving ring of metal provided with a series of pins or
needle points which enter the cloth and feed it along as the sewing proceeds.
With a revolving cloth-feed" of this kind it has been usual to employ a series
of "clearers" (one to each pin) for the purpose of pushing off the cloth clear of
the pins after sewing, so that it is not carried round with the feed ring any further
than is necessary.
The object of my invention is to dispense with these "clearers" and to effect the
same purpose in a simpler and more economical manner.
€6
For this purpose I employ a clearing ring or metal band which hangs upon the
feed-ring and is provided with slots or openings through which the needle points
or pins project, so that it revolves with the "feed-ring but this clearing ring or
band is made of a larger diameter than the "feed-ring so that its lower part would
hang quite clear of the pins.
Instead however of allowing the clearing ring or band to hang straight down-
wards from the "feed-ring" whereby it would not be disengaged from the pins
sufficiently early to release the cloth I provide (on the letting-off side) a spring or
springs which will give the clearing ring or band a forward tendency so as to cause
it to clear the pins before they reach the horizontal position opposite to the axis,
so that the cloth is released from the pins before it can be drawn under the
feed-ring.
Dated this 27th day of February 1891.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in Sewing Machines.
WILLIAM BIRCH of Milton Street fron Works Lower Broughton Manchester
in the County of Lancaster, 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 :-
This invention relates to an improved device applicable principally to that class
of sewing machines employed by bleachers, calico printers, and others for the
purpose of sewing together the ends of pieces of woven fabrics, wherein the "cloth-
feed
employed consists of a revolving ring of metal provided with a series of
pins or needle points which enter the cloth and feed it along as the sewing
proceeds.
"
With a revolving "cloth-feed" of this kind it has been usual to employ a series
of "clearers" (one to each pin) for the purpose of pushing off the cloth clear of
the pins after sewing, so that it is not carried round with the feed-ring any further
then is

page_text: The object of my invention is to dispense with these "clearers" and to effect the
same purpose in a simpler and more economical manner.
The nature of my said invention. and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference
to the sheet of drawings hereunto annexed and the following explanation thereof.
Fig. 1 on the drawing is a side elevation of the revolving cloth-feed motion of a
sewing machine of the class herein before referred to, and Fig. 2 is a partial
sectional elevation of the same drawn to a larger scale.
a is part of the frame-work, and is the revolving feed-ring provided with pins or
needle points c, being carried by rollers or wheels d and actuated by a train of
gearing the last wheel of which gears into an internal rim of teeth 61 cast or
formed inside the ring.
the
e
21
For the purposes of my invention I employ a clearing ring or metal band which
hangs upon the feed-ring and is provided with slots or openings (see plan view
Fig. 3) through which the pins or needle points e project so that it revolves with
feed-ring but this clearing ring or band is made of a larger diameter than
the "feed-ring" so that its lower part would hang quite clear of the pins. Instead
however of allowing the clearing ring or band to hang straight downwards from
the feed-ring whereby it would not be disengaged from the pins e sufficiently
early to release the cloth I provide a spring or guide plate g.
.5
9
This spring is excentric to the feed-ring and as shown on Fig. 1 rivetted at
the points g to the plate g which is fixed between the two rings or bands as seen
also at Fig. 2. g3 are two adjustable stops for setting the spring or guide plate a to
the desired excentricity see Fig. 1 which will give the clearing ring or band fa
forward tendency towards the letting off side so as to cause it to clear the pins c
before they reach the horizontal position opposite to the axis as shown at c¹ Fig. 1
so that the cloth is released from the pins before it can be drawn under the feed-
ring b.
Having now particularly described, and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is:
:―
The combination with the revolving feed-ring of a sewing machine of the class
hereinbefore referred to of a clearing ring or metal band for disengaging or releasing
the pins or needle points of the feed-ring from the cloth before they reach the
horizontal position opposite the axis of the feed-ring substantially as hereinbefore
described and illustrated by the drawings annexed.
Dated this 26th day of November 1891.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.