IM- PROVEMENTS IN SEWING MACHINES, AND IN CASES FOR THE SAME
Year: 1873

page_text: PROVISIONAL SPECIFICATION left by Edward John Wade at the
Office of the Commissioners of Patents, with his Petition, on the
30th December 1873.-A communication from abroad by, Charles
Annesley Wade, of Philadelphia, in the United States of America.
I, EDWARD JOHN WADE, of Vauxhall Bridge Road, in the County of
Middlesex, do hereby declare the nature of the said Invention for " IM-
PROVEMENTS IN SEWING MACHINES, AND IN CASES FOR THE SAME," to be as
follows:-
This Invention consists in arranging or combining the parts of sewing
machines as herein-after described, and in constructing sewing machine
cases in such manner that they will support the machine when in use,
and receive it when not in use as also herein-after described.
The frame of the machine is made by preference of one continuous
piece of metal. The base or horizontal portion is bent up vertically at
the left hand end, and at the top of this vertical portion is a horizontal
piece to which the work plate is secured. The opposite end of the base
also has a vertical part carried up therefrom, and the two vertical parts
form bearings for a rod of the looper. The upper end of the right hand

page_text: vertical part is continued horizontally and again turned down vertically
to the work plate, where it has a horizontal piece to form the presser
foot. The frame may be made elastic so as to permit of this foot being
lifted for the purpose of introducing, holding, and withdrawing the
article to be sewed. Or the frame may be rigid and a spring plate be
attached to the work plate to press the said article up against the foot.
By either of these constructions a jointed or sliding presser foot is
avoided. The driving shaft passes through the upper vertical portions,
and carries at the left hand end a crank to which a piece forming the
needle bar is jointed. Attached to the frame just above the presser foot
is a piece with two perforations, one of which is for the passage of the
thread, and the other acts as a guide and centre for the oscillating
needle movement to accommodate which the perforation is countersunk
from the upper to the lower surface. A slot is formed in the presser foot
and a corresponding slot in the work plate. The right hand end of the
driving shaft carries a driving wheel or crank.
The looping mechanism is arranged as follows:-One end of the rod
before-mentioned is bent upwards towards the work plate, the extremity
being turned to form a hook. The other end of the said rod is likewise
turned up and formed into such shape as to be acted upon by the crank
handle of the driving wheel and be made to oscillate, the oscillations
being timed with the movements of the needle. The thread spool is
supported by a rod attached to the frame, and the thread is led through
one or more eyes which are either formed in a piece projecting out from
the frame or in an extension of the needle bar.
The action is as follows:-The rotary movement of the hand wheel
causes the needle to descend and thus pierce the material to be seweḍ
and also through the medium of the needle guide cause the needle to
feed the article forward the length of a stitch while the handle of the wheel
acting upon the turned up portion of the looper rod forces the looper
back beyond the needle, so that when the needle commences its upward
movement and throws out a loop of thread, the looper moves forward
and passes through the loop thus formed, and being set at an angle
required for that purpose it carries the loop directly across the slot in
the work plate, so that when the needle again passes down through the
slot it will pass through the loop, the shape of the looper arm causing
the loop to be held stationary until the needle passes through the loop,
when the looper moves back casting off the loop and is in readiness for

page_text: the next loop from the needle, the various movements being repeated in
succession forming the ordinary chain stitch.
The case for the machine is constructed as follows:-The top picce of
the case to which the machine is secured is pivoted or hinged to the side
or end pieces of the case. One of the side or end picces is also hinged
to the relativo adjacent portions of the case, and forms a door so that
the interior of the case is accessible. If this door be opened the top
piece to which the machine is secured may be rotated so as to bring the
machine within the case. On the door is a cleat which firmly holds the
top piece whether the machine is outside or inside the case, and a hook
may be provided to prevent accidental displacement of the top and
door.