Year: 1887

page_text: Date of Application, 19th May, 1887
Complete Left, 25th Nov., 1887
Complete Accepted, 6th Jan., 1888
1 ALFRED WILLIAM LEADER 119 Rosoman Street Clerkenwell E.C. Engineer do
hereby declare the nature of this invention to be as follows:-
In producing a pocket or portable sewing machine I use a cast or stamped Frame
carrying three parellel shafts, on one end of each is a crank, all of the same dip or
throw the middle one being further bent so as to form a handle, a rod with three
equidistant holes is placed on these cranks; on rotary motion being given to the
middle shaft the others follow, so that without gearing, chains, bands, etc. I get three
shafts to travel in the same direction & at the same rate or speed, on the lower shaft
is placed a looper of peculiar form stamped in the flat from sheet metal with hole in
centre for needle to pass through, the nose or beak being bent at right angles to the
shank on the upper shaft is a crank & pin by which a long needle is lifted up & down,
the eye passing through a hole in the frame near and above the cloth plate the upper
end of needle having an eyelet or hole for cotton to pass freely through, a reel pin
for the cotton a tension for the due adjustment of the same & a presser foot to hold
the work firm completes the machine.

page_text: 1, ALFRED WILLIAM LEADER, of 119 Rosoman Street, Clerkenwell, 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, that is to say:
--
The object of this invention is to produce a pocket or portable sewing machine
which shall be of extremely simple construction, of small size, and light weight, and
which in consequence may be manufactured at a very small cost.
In order that this my invention may be fully understood I will proceed to describe
same with reference to the accompanying drawings, which are full sized illustrations
of the sewing machine.
Figure 1 is a right hand side elevation of the machine with needle raised; Figure 2
a front elevation; Figure 3 is a left hand side elevation of the machine with needle
lowered and passing through the looper, and Figure 4 is an end elevation.
A convenient manner of constructing the sewing machine in accordance with this
my invention is as follows:
I use a cast or stamped frame A A carrying parallel shafts BB¹. One end of each
shaft being formed with a crank bb. The said frame also carries a central crank c
which I further bend to form a handle c'. Each of these cranks bb¹ care of the same
dip or throw, and are attached to a connecting rod C formed with three equidistant
holes for the purpose. On rotary motion being given to the central crank, the others
follow, and thus without gearing, chains, or bands, I cause the shafts to travel in the
same direction, and at the same rate or speed. On the lower shaft B¹ I place a
looper D stamped from a piece of metal, and suitably bent and shaped for catching
the cotton upon the descent of the needle. This looper D I form with an aperture d
through which the needle passes when forming the stitch.
The upper shaft B carries a crank and pin E by which the needle F is lifted up
and down; e is an eyelet formed in top end of needle, allowing the cotton to pass
freely through to the eye at point. By constructing the needle as shewn it forms its
own thread controller, and moreover it is self adjusting as the eyes for thread and
crank pin are stamped to gauge. f is a reel pin for cotton, and G is a spring forming
a tension for the due adjustment of the cotton, and regulated by screw pin g. Ä
pressure foot H for holding the work firm completes the machine.
Having now particularly described and ascertained the nature of this invention,
and in what manner the same is to be performed I declare that what I claim is :-
1. The method, as applied to pocket sewing machines, whereby I obtain rotary
motion, in the same direction, of two cranks actuated by a third and middle crank

page_text: turned in the same direction, and placed equidistant from each other in a straight
line, the said cranks heing held in place and controlled by one pitman or connecting
rod, substantially as hereinbefore described and shewn.
2. In pocket sewing machines the construction of the looper with aperture therein
for the passage therethrough of the needle, substantially as described.
3. In pocket sewing machines the construction of needle, substantially as and for
the purposes described.
4. The combination of the whole as and for the purpose set forth substantially as
described and illustrated in the accompanying drawings.