Improved Mechanism for Driving Sewing and other Machines by Foot Power.
Year: 1892

page_text: Date of Application, 5th May, 1892-Accepted, 5th May, 1893
COMPLETE SPECIFICATION.
Improved Mechanism for Driving Sewing and other Machines by
Foot Power.
We GASTON HERVIEU of 73, Cambridge Road Hammersmith Engineer and
NICOLAS ALPHONSE AUBERTIN of 10 Mornington Crescent Hampstead Road
Chemist, both in the County of Middlesex 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 :-
The objects of this invention are to overcome the dead points of the crank or the
like in all kinds of machines worked by foot power and to work sewing machines
and the like by a swinging action from the knee instead of by the unhealthy action
(for women) as at present.
And in order that our said invention may be better understood we will now
proceed to describe the same with reference to the accompanying sheet of drawings
in which :-
Figs. 1 and 2 shew front and side elevations respectively of our invention as
applied to sewing machines lathes or other like machines worked by the foot.
Fig. 3 shows sectional plan through line a. b. (Fig. 2).
The same letters denote the same parts in all the views.
a shews an angle piece or bell crank lever the arms of which may be at any
suitable angle but we have found the angle shewn on the drawing at Fig. 2. to
answer well in practice. shews fork piece in which the angle piece a. is pivotted
at c, the arm d. of the fork piece b¹ has a hole e. therein for the bar f. of the
oscillating frame g. (hereafter described) to pass through (shewn at Fig. 2).
hh. are two springs kept in position by the pin i. passing through holes in the
arms k. of the fork piece the pin i. being free to move in bridle l. 9 (Figs. 1
and 2) shews au oscillating frame or treadle. One end of the piece a. is connected
to the crank n at m. and the other end is held between the springs h h on the
arms d.
The action is as follows:-
Supposing the mechanism to be fitted to a sewing machine or the like as at
Figs. 1 and 2. Upon rocking the frame g in the direction of the arrows flight
motion will be imparted to the crank n. in the direction of the arrows flight
through our mechanism the springs h h. "giving" so that the dead point is over-
come thereby, and the bar may thus be rocked with ease simply by swinging the
leg from the knee and it will be found in practice that by the use of our mechanism
the dead points are entirely overcome.
Although we have described and shewn our invention with reference to over-
coming the dead points as applied to sewing machines and the like worked with a
rocking frame we do not wish to limit ourselves to this as it might be applied to
that class of machine worked by the ordinary treadle.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
-
I. In mechanism for driving sewing and other machines by foot power the angle
piece a. regulated by a spring or springs in combination with a rocking frame all
substantially as described and shewn at Figs. 2 and 3 of the drawings.
II. In mechanism for driving sewing and other machines by foot power the
rocking frame substantially as set forth.
III. In mechanism for driving sewing and other machines by foot power the
angle piece a. regulated by a spring or springs substantially as set forth.

page_text: IV. The improved mechanism for driving sewing and other machines by foot
power substantially as set forth.
Dated this 5th day of May 1892.
BROWNE & Co.,
9, Warwick Court, Gray's Inn, W.C., Agents for Applicants..