Improvements in and relating to Driving-mechanism for Sewing-machines.
Year: 1895

page_text: Date of Application. 7th Dec., 1895
Complete Specification Left, 7th Sept., 1896-Accepted, 7th Nov., 1896
PROVISIONAL SPECIFICATION.
[Communicated from abroad by ANTONIO POLETTI, of Milan, in the Kingdom of
Italy, Mechanic.]
Improvements in and relating to Driving-mechanism for
Sewing-machines.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention to be as follows:-
My invention relates to driving-mechanism for sewing-machines.
Sewing machines operated by hand have not heretofore come into general use,
owing to the fact that the continuous rotary movement which is transmitted to the
shaft by means of a hand wheel, greatly fatigues the arm of the operator.
A mechanism constructed according to my said invention is applicable to ordinary
pedal machines and transforms the same so that they may be used either as pedal
machines or as hand machines with an alternate movement.
The characteristic feature of this improved mechanism consists in the use of an
alternate movement of the hand, which is much less fatiguing than the continuous
rotary movement.
In order to apply my said invention to a pedal driven sewing-machine I disengage
the connecting rod from the crank shaft, and I secure a bracket to the under side
of the table of the machine. I pivot in this bracket a hand lever, and by the aid
of a second connecting rod I unite one extremity of the said hand lever with the
crank of the before-mentioned shaft.
Under these circumstances a small oscillatory movement of the hand lever will
be sufficient for effecting the complete rotation of the crank shaft and of the fly
wheel which transmits the movement to the sewing machine.
The hand lever and second connecting rod are provided at their extremities with
several holes so that I may vary the position of the articulated joints and consequently
the effective length of the said lever and rod.
In case the second connecting rod is made of wood I disengage the connecting
rod from the crank of the shaft and re-establish the ordinary pedal sewing machine
by loosening a screw and separating the two halves into which the lower part of
the connecting rod is divided.
It will be understood that I may establish or sever the connection between the
first connecting rod and crank shaft, and between this shaft and the second connecting
rod, in order to obtain at will either a pedal driven machine or a hand driven
machine, by means of any known device.
My hand driving-mechanism may also be applied to a pedal machine of different
construction from the ordinary type, the crank of the shaft being for example replaced
by a crank button or knob.
The same mechanism may moreover be employed for driving hand sewing machines
30 as to dispense with the continuous rotary movement of the arm.
Dated this 7th day of December 1895
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.

page_text: Improvements in and relating to Driving-mechanism for
Sewing-machines.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co. Patent Agents,
45 Southampton Buildings, 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 :-
My invention relates to driving-mechanism for sewing-machines.
Sewing-machines operated by hand have not heretofore come into general use,
owing to the fact that the continuous rotary movement which is transmitted to the
shaft by means of a hand wheel, greatly fatigues the arm of the operator.
A mechanism constructed according to my said invention is applicable to ordinary
pedal machines and transforms the same so that they may be used either as pedal
machines or as hand machines with an alternate movement.
The characteristic feature of this improved mechanism consists in the use of an
alternate movement of the hand, which is much less fatiguing than the continuous
rotary movement.
In the accompanying drawing
Figure 1 is a front elevation, of a pedal machine provided with my improved hand
transmitting mechanism.
Figure 2 is a side elevation of the same.
Figure 3 represents separately the new parts which have to be supplied in addition
to the ordinary pedal machine in order to render it susceptible of being actuated by
my system of hand driving mechanism.
In these figures A is the frame of the machine, B the pedal, C the rod connecting
the pedal with the crank shaft D which turns upon the frame.
In order to apply my said invention to a pedal driven sewing machine I disengage
the connecting rod C between the pedal and the crank shaft from the latter, and
I secure a bracket E to the under side of the table F of the machine pivot in this
bracket E a hand lever G adapted to turn about the pivot a and by the aid of a
second connecting rod H I unite one extremity of the said hand lever G with the
crank of the before-mentioned shaft D.
As will be seen from Figure 2 a small oscillatory movement of the hand lever will
be sufficient for effecting the complete rotation of the crank shaft D and of the fly
wheel which transmits the movement to the sewing machine.
The hand lever G and connecting rod H are provided at their extremities with
several holes b, b, b, c e¹ so that I may vary the position of the articulated joints
and consequently the effective length of the said lever and rod.
In Figure 3 the connecting rod H is supposed to be made of wood. In this
case I disengage the connecting rod from the crank of the shaft D and re-establish
the ordinary pedal sewing machine by loosening a screw d (Figure 3) and separating
the two halves ' h into which the lower part of the connecting rod H is divided,
on the line s t.
It will be understood that I may establish or sever the connection between the
connecting rod C and crank shaft D and between this shaft and the connecting
rod H in order to obtain at will either a pedal driven machine or a hand driven
machine by means of any known device.
My hand driving-mechanism may also be applied to a pedal machine of different
construction from the ordinary type, the crank of the shaft being for example replaced
by a crank button or knob.
The same mechanism may moreover be employed for driving hand sewing
machines so as to dispense with the continuous rotary movement of the arm.

page_text: Having now particularly described and ascertained the nature of the said invention,.
and in what manner the same is to be performed, as communicated to me by my
foreign correspondents, I declare that what I claim is :-
A hand operating mechanism for sewing machines, consisting of a lever G provided
with a handle and adapted to be moved to and fro, the said lever being connected by
a rod H with the crank shaft D in such a manner that the latter will be set in rotation
by the to-and-fro motion of the lever G.
Dated this 7th day of September 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.