Year: 1886

page_text: Date of Application, 29th Dec., 1886
Complete Left, 3rd Sept., 1887
Complete Accepted, 11th Nov., 1887
ROBERT WILLIAM ANDERSON of 177 Upper Parliament Street Liverpool, Lancas-
shire, Engineer, do hereby declare the nature of this invention and the manner of
operating the same. Said invention relates to improvements in that class of machine
known as a Portable or Pocket Sewing Machine. Such improvements are set forth in
the following statement, reference being had to the accompanying drawings. Similar
letters of reference denote corresponding parts
The machine is illustrated more in detail in Figs. 2 and 3. Fig. 1 is a front view
of the machine with the needle on the half up stroke. Fig. 2 is a back view, showing
the driving crank K, pitman P, the double-ended lever B, the small lever t, on the end
of the rock-bar T. The combined shuttle moving lever, thread guide, and
puller S, and s², Figs. 1 & 2, the needle is nearing the lowest position. Fig. 3 is a
side view, with the needle in the highest position. Fig. 4 is a plan of the table, the foot
of the cloth presser and head of the needle bar being removed to show the slot W,
formed for the projection of the cloth mover E, the needle hole Y terminates in a
groove formed in the plate R, and may be traced by the dotted lines in Figs. 1. & 3.
Mis a frame having suitable guide pieces at the back, on which slide the slotted
needle bar A, which is held in position by the double-ended lever B which oscillates on
the driving shaft C, said shaft passing through the centre of the machine to the front,
and carries a washer-eccentric D, Figs. 1 & 3 which operates the cloth mover E, (the
throw of said lever may be altered by suitable means). A pin passes through the end
of the shaft and a groove in the face of the washer-eccentric, thus holding the working
parts in position, Fis a facing on the outside, and G a recess on the inside of plate R,
Figs. 1 & 3.
The top end of the lever B has two eyelets i4 and i 5, which act as thread guides
and tension when working in connection with eyelets i3 on the frame and i2 on the
needle bar Fig. 2 (dotted).
A slot 6 is formed in the foot of the double-ended lever Figs. 1 & 2, through which
passes the rock-bar T, on the back end of which is the short lever t, working on a

page_text: pint, fixed to the lever B, two pins q & q¹ on the needle bar, work and keep in
position the double-ended lever.
The shuttle moving lever S, is a novel combination. The shuttle is carried in a claw-
shaped recess, a circular slot s¹, Figs. 1. & 2, allows the lever to oscillate free of the
shaft, a projection 2, acts as thread guide and puller. The shuttle lever S is kept to
the plate R, by the spiral spring on the rock-bar. By pressing the front end of the
rock-bar T, the shuttle moving lever S is thrown back and the shuttle falls out, (a small
flat spring fixed to the top of the lever S may press against the shuttle if desired).
A shuttle reel winding support attachment, is fastened beneath the table, a suitable
tip or point being made on the end of the shaft C.
The cloth presser H, is a bent plate, having three sides and a foot, and is held in
position on the overhanging arm N, by a screw and cam-washer h, which serves also
as a lifter, 1 is a slot F 2, n 1 is a guard plate, to keep the cloth off the needle bar.
A beveled edge m, at the foot of the frame, serves to keep the machine at a greater
angle when fixed to a table, thereby allowing more room for the revolution of the
crank. The frame is fluted down the back at O, Figs. 1. & 3.
The operation of this invention is as follows,―
The lower thread passes from the shuttle through the hole Y. In order to obtain
the pull and tension, & owing to the novel position of the Bobbin J, the upper thread
runs through the eyelets, i 1, on the frame, s 2, on the shuttle lever, i 2, ou the needle-
bar Fig. 2, (dotted), 3, on the frame, 4 and 5, on the top of the lever B, & i6, on
the needle bar head, to the needle.
On the upward motion of the needle-bar, a short rest is given to the shuttle, in
order to forin a loop through which it passes, by the pin q 1, on the needle-bar, moving
up till it strikes the heel of the lever B, pushing it over, and communicating motion
to the rock-bar, through the pin t¹, and short levert.
Dated this 28th day of December 1886
ROBERT WILLIAM ANDERSON.

page_text: 1 ROBERT WILLIAM ANDERSON of 177 Upper Parliament Street Liverpool
Lancaster Engineer 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 that class of Sewing machines known as portable or pocket
Sewing machines capable of being fixed to an ordinary table or the like for use and
has for its object to provide a machine of that class which will be more certain in
action simpler and less expensive in construction and more convenient to work than
are such machines as hitherto constructed.
I will describe my Invention with reference to the accompanying drawings
Figures 1 and 2 of which represent in front and back elevations respectively a lock-
stitch machine constructed according to my Invention. Figure 3 is a side elevation
and Figure 4 a plan of the same. Figures 5, 6 and 7 are views similar to figures 1. 2
and 3 illustrating slight modifications of details as hereinafter described..
Referring to Figure 1, the needle bar A is shewn elevated to the extent of about
half stroke the point of the needle being about level with the top face of the table or
cloth plate A.
The needle bar A which is actuated from the crank arm K by a connecting rod or
pitman P slides vertically at the back of the frame M and is guided in its vertical
movement by studs or projections a on the frame entering a slot or slots b in the said
needle bar which is held in position on the studs a by a double armed lever B mounted
on the driving shaft of the machine. The shaft C passes from the back of the
machine to the front thereof and carries at its front end an excentric D for operating
the cloth feeding device E.
This feeding device E works against the front face F of a plate R which forms a
portion of the frame of the machine whilst at the back of the said plate is provided
a surface against which the shuttle oscillates to and fro. The shuttle carrier S is
mounted on a rock shaft T which is capable of being moved back by pressing against
its front projecting end so as to overcome the pressure of the spring whereby the
shuttle carrier S is moved away from the back of the plate R so as to leave a space at
which the shuttle may be readily removed and replaced when desired. A segmental
slot S' in the shuttle carrier S admits of it oscillating free of the shaft C.
The front end of the shaft T enters a slot in the lower end of the feeding device E
acting as a fulcrum therefor and its rear end which passes through a slot 62 in the
double ended lever B carries a plate or levert the outer end of which is provided with
a slot engaging with a pin ton the lower end of the lever B so that when the lever is
oscillated as hereinafter described it imparts through the plate t the required to and
fro motion to the shuttle-The needle thread is carried on a bobbin J mounted on a
spindle projecting from the frame of the machine beneath the cloth plate and the
thread is conducted to the needle from the bobbin through the guide eye on the
frame of the machine thence through another eye on the shuttle carrier and on
the needle bar A, through another guide on the frame to eyes and on the
upper end of the lever B and then through a guide on the upper end of the needle.

page_text: bar A to the needle-The necessary tension is imparted to the thread bobbin by
means of a thumb nut screwed on the spindle on which the bobbin is mounted so as
to compress more or less as required a spring placed between the bobbin and the
frame of the machine-The eye is made in a projection on the shuttle driver S and
acts when the shuttle oscillates to take up the slack of the needle thread and tighten
the stitch.
A shuttle reel winding attachment is connected beneath the front of the cloth
plate of the machine between which attachment and the end of the driving shaft C
the shuttle spool or reel is held so that by rotating the shaft C rotary motion will be
imparted to the spool while the thread is being guided there onto so that it is wound
thereon. H is the presser foot acted upon by a spring for imparting the necessary
pressure to the cloth whilst it is being sewn it is held in the necessary position on
he overhanging arin N by means of a screw and eccentric cam lever h which also
erves as a lifter for removing the pressure of the foot H from the cloth when
required.
The presser may be formed from a plate of metal bent into the required shape as
shewn.
The machine works in the following manner. The needle being elevated, thread
from the shuttle spool is passed from the shuttle from below, through the hole Y in
the cloth plate or table A2 and the upper or needle thread is conducted to the needle
through the various guide eyes as hereinbefore described.
The cloth to be sewn is then placed beneath the presser foot H and rotation is
imparted to the shaft C by means of the handle of the crank K, n is a plate to keep
the cloth out of contact with the needle bar.
The needle then descends and carries the required quantity of thread through the
cloth and at the same time a stud 7 on the needle bar A by acting on the upper end
of the lever B causes the said lever to turn on its fulcrum and through the pin t¹ and
lever or arm t on the rock shaft T bring the shuttle into position in readiness to throw
it through a loop in the needle thread when formed. The needle bar then rises slightly
without operating the lever B and a loop is thus formed in the needle thread after
which by the continued ascent of the needle bar a stud or projection g' by acting
upon the edge of the lower portion of the lever B causes the said lever to turn on its
fulcrum and by means of the pin t' and the arm or plate t carry the shuttle through
the loop formed in the needle thread. The next descent of the needle will cause the
lever to oscillate in the opposite direction and through the pin t¹ and arm or plate t
return the shuttle to its former position in readiness for the next stitch.
The cloth is then fed forward for the next stitch by the cam D on the end of the
shaft Coscillating the feeding device E and the operations herein before described are
then repeated until the desired length of stitching is completed. The machine is
intended to be clamped to a table or other suitable support when in use and in order
to render the machine more convenient for working it is not fixed at a right angle to
the edge of the table or support but at such an angle thereto that more room for
turning the crank handle is provided and for this purpose the surface of the frame
which bears against the edge of the table or support is arranged at an angle other
than a right angle to the cloth plate or to the axis of rotation of the spindle Cas
shewn at m, Figure 1, corresponding to the angle at which it is desired to fix the
machine. The preceding details may be varied it will be evident whilst still retaining
the characteristics of my Invention. For example, according to the modification
illustrated by figures 5, and 7, in place of the double-ended lever B herein before
described for working the shuttle driver and tightening the stitch the shuttle driver
is operated directly from the crank handle by means of a link B, Figure 6, at the
outer end of which is a pin working in an angular slot 7 q' in a bell-crank plate or
levert fast on the rock shaft T, carrying the shuttle carrier, so that when the crank
arm is turned to work the machine, the pin in the link B traverses the angular
9 and thus imparts the necessary oscillating motions to the shuttle. In place
of the guide eye Figures 1 and 2 for the needle thread on the shuttle driver,
I provide on the goose-neck or upper part N of the frame a hinged arm shaving an
slot

page_text: eye through which the thread is passed to the needle, which hinged arm is acted upon
by a slot or recess in or projections on the needle bar when it rises so as to tighten
the stitch. In order to regulate the length of stitch I form the serrated feeding
surface on a horizontal plate z, hinged at x to the upper end of the feeding device E
and regulate the motion thereof by means of a cam lever y.
In other respects the machine is similar to that described with reference to
Figures 1, 2, 3 and 4. The fulcrum for the cloth feeder may be in any suitable
position other than that shewn and it will be evident that many of the minor details
may be varied.
Having now particularly described and
Invention and in what manner the same is
claim is :-
ascertained the nature of my said
to be performed I declare that what I
First, In Sewing-machines of the kind hereinbefore referred to providing the
frame with a bearing surface (m) at an angle other than a right angle to the axis of
rotation of the driving shaft substantially as and for the purpose hereinbefore described
and illustrated by the accompanying Drawings.
Second, The combination with the frames M and N and needle bar shaped as shewn
of the guard plate n for preventing the cloth coming into contact with the needle
bar, substantially as hereinbefore described and illustrated by the accompanying
Drawings.
Third, The slotted needle bar A shaped as shewn and used in combination with
guide pins or projections on the frame of the machine substantially as hereinbefore
described with reference to the accompanying Drawings.
Fourth, The combination with the double-armed lever B of the pins or pro-
jections . on the needle bar for imparting the necessary motions to the shuttle
substantially as hereinbefore described with reference to the accompanying Drawings.
Fifth, The combination of the crank-arm K; link B, rock-shaft T, and slotted bell
crank lever or plate t, substantially as and for the purpose herein before described with
reference to Figures 3, 6 and 7 of the accompanying Drawings.
Sixth, The combination with the needle bar A of the hinged levers with an eye
through which the needle thread passes to the needle the said lever being operated by
a slot or recess in or pins on the needle bar when rising for the purpose of tightening
the stitches substantially as hereinbefore described with reference to figures 5, 6 and 7
of the accompanying drawings.
Seventh, The combination of the rock shaft T, shuttle carrier S, spring t² and
slotted levert substantially as and for the purpose hereinbefore described with
reference to the accompanying Drawings.
Eighth, The general construction and arrangement of the feeding device E herein-
before described and illustrated by the accompanying Drawings.
Ninth, The presser foot H constructed and arranged to operate substantially in the
manner herein before described and illustrated by the accompanying Drawings.
Tenth, The spool or bobbin J containing the needle thread, arranged beneath the
cloth plate or table of the machine substantially as herein before described with
reference to the accompanying Drawings.
Eleventh, The general combinations and arrangements of parts constituting
portable or pocket Sewing-machines, substantially as herein before described with
reference respectively to Figures 1, 2, 3 and 4 and Figures 5, 6 and 7 of the
accompanying Drawings.