Year: 1885

page_text: I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of this Invention a communication to me
from abroad by The Deutsche Nähmaschinenfabrik vorm Wertheim, of Frankfort
on Main, in the Empire of Germany, through their Agents Wirth and Company,
also of Frankfort, to be as follows:-
This Invention relates to an improvement in sewing machine shuttles, and
shuttle drivers; and consists in the interposition of springs between the point and
heel of the shuttle and driver, in the way hereafter described, in order to avoid
noise, and moderate the tension of the shuttle thread. The springs may either be
fixed to the shuttle driver, or to the shuttle itself.
In the one case, a steel spring (or springs) extending along the inside of, and
fixed to the shuttle driver, is bent up at the ends to conform to the shape of the
shuttle driver, and embrace the shuttle, the spring being formed with two horns
at front end, between which the point of the shuttle is held, sufficient space being
left between the shuttle and driver, at both ends, for the play of the spring.
In the other case, flat springs are affixed to the shuttle at each side of its point,
and another spring attached to the side of the shuttle and bent round the heel-end,
the horns of the shuttle driver striking these springs instead of the shuttle itself,
and thus producing a noiseless action.

page_text: COMPLETE SPECIFICATION.
An Improvement in Sewing Machine Shuttles and Shuttle
Drivers.
I, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of
53, Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent
Agents, do hereby declare the nature of this Invention (a communication to me
from abroad by The Deutsche Nähmaschinenfabrik vorm Wertheim of Frankfort
on Main in the Empire of Germany through their Agents Wirth and Company
also of Frankfort) and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement:-
This Invention relates to an improvement in sewing machine shuttles, and
shuttle drivers; and consists in the interposition of springs between the point and
heel of the shuttle and the driver in the way hereafter set forth, in order to avoid
noise and moderate the tension of the shuttle thread. The springs may either be
fixed to the shuttle driver, or to the shuttle itself.
Reference is to be had to the accompanying drawings forming part of this
Specification wherein figures 1. 2 and 3 shew three views of the shuttle driver (the
shuttle being omitted from figure 1) with the springs applied to the driver.
Figures 4 and 5 shew two views of a shuttle with the springs applied thereto.
The same letters of reference indicate the same parts in all the figures.
In figures 1. 2 and 3 a steel spring b (or springs) extends along the inside of and
is fixed to the shuttle driver a. It is bent up at the ends to conform to the shape
of the shuttle driver and embrace the shuttle, the spring being formed with two
horns at the front end, between which the point of the shuttle is held as
shewn. The portions b of the spring intervene between the shuttle and the
horns d of the shuttle driver, and the part 62 of the spring intervenes between the
heel of the shuttle and the horn e of the shuttle driver sufficient space being left
between the shuttle and driver at both ends for the play of the spring.
In figures 4 and 5 flat springs m are affixed to the shuttle at each side of its
point, and another spring n is attached to the side of the shuttle and bent round
the beel-end, the horns of the shuttle driver striking these springs instead of the
shuttle itself and thus producing a noiseless action.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed I declare that what
I claim is ;-
The interposition between a sewing machine shuttle and driver of springs
applied between the point and heel of the shuttle and the horns of the driver, the
springs being affixed either to the driver or the shuttle substantially as and for 3
the purpose specified.