Improvements in Sewing-Machines for the Production of Arched Ornamental Seams.
Year: 1898

page_text: Date of Application, 12th Sept., 1898
Complete Specification Left, 5th June, 1899-Accepted, 15th July, 1899
PROVISIONAL SPECIFICATION.
Improvements in Sewing-Machines for the Production of Arched
Ornamental Seams.
>
I, CHARLES JOSEPH ALEXANDER, of 28, Montague Place, London, Merchant, do
hereby declare the nature of this invention to be as follows:-
This invention relates to sewing-machines for the production of arched ornament
seams, in which the movement of the stuff takes place in two vertical planes.
The invention consists of improvements in the device for moving the stuff, this
arrangement allowing of the production, by means of one and the same grooved
disc, of arched ornament seams of a larger or smaller or more precisely, greater
or less width or height, or a greater or less width or height simultaneously, this being
hitherto only possible by changing the pattern or grooved disc.
The shifting device is mounted laterally upon the machine frame, so that the
mechanism is easily accessible, and an adjustment of the parts possible, by
which means the variation of the form of the arched ornament seams can be easily
produced.
As before mentioned, the movement of the stuff takes place in known manner in
two planes vertical to each other.
From the machine-shaft, which is actuated by means of a hand crank, a hand-
wheel, cord-disc or similar device a second shaft is driven by means of toothed
wheels, said second shaft being journalled in suitable manner upon the machine
frame.
.
Upon the second shaft, rest two eccentric discs or more precisely, are mounted upon
the shaft, said discs turning with the shaft and being displaceable in a longitudinal
direction to the same, said two eccentric discs effecting the up-and-down movement
of the pressure-foot, and the movement of the stuff in the direction of one of the
before mentioned planes. The pressure-foot consists of a toothed plate, which is
connected to a plate-bar; said plate-bar oscillating upon pins or pivots. The plate
bar possesses a crank-arm rigidly attached to the same. The said pins or pivots are
guided in slots of the casing, said casing being rigidly connected to the slide,
with which slide the movement of the foot-pressure is produced in the direction
of the second mentioned plane. Upon a small roller of the before mentioned
crank arm acts one of the beforementioned eccentric discs and produces the up-
and-down movement of the stuff pressure-foot, whilst the second eccentric disc
acts upon the projecting arm of the before mentioned crank-arm, and hereby the
movement of the pressure-foot in the first mentioned plane is attained. The said
projecting arm, for the purpose of regulating the length of stitch, can be adjusted by
means of a screw.
.
The pressure foot is held down by means of springs attached to the beforesaid pins
or pivots, whilst the foot-pressure bar is held in its proper position by means of a
spring arranged upon the casing.
The movement of the stuff in the second plane is effected from the beforesaid shaft
by aid of the curved disc, against which a pin rests, said pin being arranged upon an
oscillating lever provided with a slot, the said lever being journalled upon the machine
D

page_text: frame. The said pin is held in contact with the curved disc by means of a spring
fastened to the lever and the machine frame. The oscillating lever is connected to
the grooved disc by means of a rod, and a second disc provided with a pawl,
said pawl engaging in a toothed wheel which is rigidly connected to the grooved
disc.
In the groove of the said grooved disc a pin engages, which is connected to a second
oscillating lever provided with a slot. In this slot a second rod is secured, which is
connected to the slide movable in the before mentioned second plane.
These said rods are adjustable in the slots of the oscillating levers, this being a main
feature of the invention, as by such adjustment I attain, that the form of the arch
ornament seams may be optionally varied.
1000
GEO. THOS. HYDE,
No. 1, Broad Street Buildings, Liverpool Street, E.C.,
Agent for the Applicant.
Improvements in Sewing-Machines for the Production of Arched
Ornamental Seams.
I, CHARLES JOSEPH ALEXANDER, of 28, Montague Place, London, Merchant, do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following state-
ment:-
This invention relates to sewing-machines for the production of arched ornamental
seams, in which the movement of the stuff takes place in two different planes.
The invention consists of improvements in the device for moving the stuff, this
arrangement allowing of the production, by means of one and the same grooved disc,
of arched ornament seams of a larger or smaller or more precisely, greater or less
width or height, or a greater or less width or height simultaneously, this being hitherto
only possible by changing the pattern or grooved disc.
In order to make my invention more clear I refer to the accompanying drawings,
in which similar letters denote similar parts throughout the different views, and in
which:
Figure 1 illustrates an elevational view of the stuff-moving device,
Figure 2 illustrates a front view of the same,
Figure 3 illustrates a top view of same,
Figure 4 illustrates a sewing machine seam, the height of which can be altered at
will by means of the shifting device.
The same is mounted laterally upon the machine frame, so that the mechanisin
is easily accessible, and an adjustment of the parts possible, by which means the
variation of the form of the arched ornament seams can be easily produced.
As before mentioned, the movement of the stuff takes place in known manner in
two planes xy being perpendicular to each other.
From the machine-shaft a, which is actuated by means of a hand crank, a
hand-wheel, cord, disc or similar device, a second shaft c is driven by means of
toothed wheels 6 6¹, said second shaft being journalled in suitable a manner upon the
machine-frame.
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Upon the second shaft c rests or are mounted and turn therewith two can discs e e¹,
these being displacable in the direction indicated by the double arrow y, said two
cam discs effecting the up-and-down movement of the pressure-foot, and the
movement of the stuff in the direction of one of the before mentioned planes. The

page_text: pressure-foot consists of a toothed plate f, which is connected to a plate-bar g;
the said plate bar oscillating upon pins or pivots g¹ g¹. The plate bar g possesses a
crank-arm g2g3 rigidly attached to the same. While the said pins or pivots gl glare
guided in slots h of the casing h¹, which said casing is rigidly connected to the slide i,
with which slide the movement of the pressure-foot is produced. In the direction
of the before mentioned crank arm g acts the beforementioned cam disc e¹ and
produces the up-and-down movement of the stuff pressure-foot f, whilst the second
cam disc e acts upon the projecting arin of the before mentioned crank-arm g³,
whereby the movements of the pressure-foot in the direction y of the double arrow is
attained. The said projecting arm l, for the purpose of regulating the length of
stitch, can be adjusted by means of a screw l¹.
The pressure foot f is held down by means of springs m attached to the beforesaid
pins or pivots g1 g, whilst the foot-pressure bar g is held in its proper position by
means of a spring h² arranged upon the casing h¹.
The movement of the stuff in the second plane x is effected from the beforesaid
shaft a by the aid of a curved disc n, against which a pin o rests the said pin being
arranged upon an oscillating lever p provided with a slot pl, the said lever being
journalled upon the machine frame d. The said pin o is held in contact with the
curved disc n by means of a spring p² fastened to the lever p and the machine frame.
The oscillating lever p is connected to a grooved disc r by means of a rod 9, the
said disc being provided with a pawl 1, adapted to engage with the teeth of a
toothed wheel ¹ which is rigidly connected to the grooved disc 8.
In the groove of the said grooved disc sa pint engages, which is connected to
a second oscillating lever u provided with a slot u¹. In this slot a second rod v is
secured, which is connected to the slide movable in the before mentioned second
plane.
These said rods q v are adjustable in the slots p', u¹ of the oscillating levers, this
being a main feature of the invention, as by such adjustment I attain, that the form
of the arch ornament may be optionally varied.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. An improved sewing machine for producing arched ornainental seams of
varying height and width and in which the stuff is moved in two different planes,
perpendicular to each other, characterized by oscillating levers provided with slots.
and rods adjustably arranged within the said slots and effecting the movement of
the stuff-moving device, substantially as and for the purposes herein described and
shewn.
2. An improved sewing machine for producing arched ornamental seams,
substantially as herein described and shewn.
GEO. THOS. HYDE,
1, Broad Street Buildings, London, E.C., Agent for the Applicant.