Improvements in Sewing Machines.
Year: 1889

page_text: Date of Application, 11th Mar., 1889
Complete Specification Left, 11th Jan., 1890-Accepted, 15th Feb., 1890
PROVISIONAL SPECIFICATION.
Improvements in Sewing Machines.
I WILLIAM EDWIN. HIOKLING of Laurel Road Leicester in the County of
Leicester Accountant do hereby declare the nature of this invention to be as
follows:-
The improvements consist in the method of constructing sewing machines intended
to make two parallel seams of sewing at the same time. The machine has a bed
plate and arm similar to sewing machines in common use-Along the top portion of
the arm or enclosed within it I place a shaft in suitable bearings, on one end of
which is the wheel or pulley which takes the power from the driving belt and at the
other end the mechanism for driving the needle bar-Below the bed plate and
parallel with the top shaft I place another shaft-I connect these two shafts at the
wheel end by means of a connecting rod so arranged as to make the shafts revolve
at equal speeds-The bottom shaft, at the opposite end from that from which it is
driven carries the looper which makes the sewing with one of the needles to produce
one seam. Beneath the bed plate, parallel with, and at a convenient distance from,
the last named shaft I place another shaft. This shaft is also driven at an equal
speed with the others, either from the top shaft or from the shaft which carries
the looper, and is extended to some distance past the end of the shaft carrying the
looper This shaft forins a countershaft for transmitting the motion to another
short shaft which carries the looper for the second needle and which short shaft has
its axis in line with the first mentioned looper-carrying shaft-The motion may be
transmitted from the counter shaft to the second looper shaft either by means of a
connecting rod joining a crank on each shaft and working in slides, or by two cranks
on each shaft and two connecting rods-By these means the two loopers work with
their respective needles in perfect time and produce two rows of stitches at once. By
varying the distance between the two needles and between the two loopers the two
rows of sewing may be made at such distance apart as may be desired-Any suitable
means for driving the needle bar and also any suitable feed may be used-The above
description applies to a machine for making single-thread, or chain-stitch sewing-If
lock-stitch sewing is required shuttles must be used in place of the loopers-As an
alternative arrangement I place the main or first shaft beneath the bed-plate of the
machine and work the needle bar by a rocking shaft connected to a crank on the
main shaft by a link or a connecting rod-I then use two shorter shafts carrying
the loopers or shuttle carriers, and drive them from the main shaft by cranks &
connecting rods or by other means as above described.
Dated this 9th day of March 1889
W. E. HIOKLING.
COMPLETE SPECIFICATION.
Improvements in Sewing Machines.
I, WILLIAM EDWIN HICKLING, of 66 Laurel Road, Leicester, in the County of
Leicester, Accountant, 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, reference being had to the accompanying drawings
and to the letters and figures marked thereon, that is to say :-
The improvements consist in the method of constructing sewing machines intended
to make two parallel seams or rows of sewing at the same time. The machine has
a bed plate and an arm similar to sewing machines in common use; along the top
portion of the arm, or enclosed within it, I place a shaft, in suitable bearings, on one
ID 1171

page_text: end of which is the wheel or pulley which takes the power from the driving belt,
and at the other end the mechanism for driving the needle bar. Below the bed plate
and parallel with the top shaft, I place another shaft and connect these two shafts at
the wheel end by means of a connecting rod so arranged as to make the shafts revolve
at equal speeds. The lower shaft, at the opposite end to that from which it is driven,
carries the looper which makes the sewing in conjunction with one of the needles for
producing one seam or row of sewing.
Beneath the bed plate, parallel with, and at a convenient distance from the last
named shaft, I place another shaft. This shaft is also driven at an equal speed
with the others, either from the top shaft, or from the shaft which carries the
looper, and is extended to some distance beyond the end of the shaft carrying the
looper. This shaft forms a counter shaft for transmitting the motion to another short
shaft which carries the looper for the second needle, and which short shaft has its axis
in line with the first mentioned looper-carrying shaft. The motion may be
transmitted from the counter shaft to the second looper shaft either by means of a
connecting rod joining a crank on each shaft and working by means of slides, or by
two cranks on each shaft and two connecting rods.
By these means the two loopers work with their respective needles in perfect time
and produce two rows of stitches at the same time. By varying the distance
hetween the two needles, and between the two loopers, the two rows of sewing may
be made at such distanco apart as may be desired. Any suitable means for driving
the needle bar, and also any suitable feed may be used.
The above description applies to a machine for making single thread or chain
stitch sewing; if lock stitch sewing is required, shuttles must be used in place of
the loopers.
As an alternative arrangement, I place the main or first shaft beneath the bed plate
of the machine and work the needle bar by a rocking shaft connected to a crank
on the main shaft by a link and a connecting rod. I then use two shorter shafts
carrying the loopers or shuttle-carriers and drive them from the main shaft by cranks
and connecting rods, or by other means as above described.
In order that my invention may be fully understood and readily carried into effect,
I proceed to describe the same with reference to the annexed drawings.
Fig. 1 is a longitudinal vertical section of a chain stitch sewing machine
constructed according to my invention, Fig. 2 is an underside view of the same, and
Fig. 3 is an end elevation.
Fig. 4 is an end view, and Fig. 5 an underside view of a modified arrangement of
mechanism for transmitting motion to the additional looper shaft.
Fig. 6 is an end view and Fig. 7 an underside view of a further modified
arrangement of mechanism for transmitting motion to the additional looper shaft.
Referring to Figs. 1, 2, and 3, a is the main or crank shaft turning in bearings a¹, a¹,
it carries at one extremity the driving wheel b, and at the other extremity a crank
plate c and connecting rod d for reciprocating the needle bar.
Situated below the bed plate is the shaft e and counter shaft farranged parallel the
one to the other, and to the main shaft. They receive their motion from the main
shaft by means of cranks e, f, and connecting rods g, h, the connecting rods
being provided with studs g¹, 1, carrying rollers which enter and work in
guides, j.
The shafte is the ordinary looper shaft and imparts rotation to the looper ex, and the
counter shaft is prolonged beyond that end of the shaft e carrying the looper ex and
terminates in a crank & for transmitting motion to the additional shaft 7 which is placed
in the same axial line with the looper shaft e, and forms a second looper shaft for
carrying and rotating the looper 1*. Motion is transmitted to this additional or
secondary looper shaft by means of a crank plate mounted on its outer end and
driven by the crank on the counter shaft through the connecting rod m. The end
of this connecting rod, which is driven by the crank k, is formed with a tail piece n
carrying a block or slide o working in vertical guide which is secured to a cross
bar 8 and moves therewith. Slots s¹s are formed in the bars and pins or studs &³, 82,

page_text: pass through them into brackets t, t, (figs. 2 and 3) which support and guide the
bar s in its motion. By this means I transmit to the additional looper shaft a uniform
reproduction of the motion imparted to the counter shaft, and an enabled to produce
a double seam or row of stitches in a more perfect manner than has hitherto been
possible.
In the modified arrangement shewn in Figs. 4 and 5, I dispense with the counter
shaft f, and give motion to the additional looper shaft by means of a rocking bar A,
provided with cranks A*, A*, and connecting rods B, B. The connecting rod B is
coupled to a crank plate C secured to the additional looper shaft and the connecting
rod B is coupled to an eccentric D secured to the ordinary looper shaft e.
two connecting rods B and B are rigidly connected together by the sleeve B2.
The
Or I may furnish the counter shaft and the additional looper shaft each with
two cranks,, ', l, and connect' them together by two connecting rods x, x, as
shewn in Figs. 6 and 7.
The feed u may be actuated by the usual feed cam v carried on the counter shaft f, as
shown in Figs. 1 and 2. Or, when the arrangement shewn in Figs. 4 and 5 is used,
the eccentric D may serve to actuate the feed.
It will be evident that the above described.mechanism can be equally well applied
to sewing machines having shuttles instead of loopers.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I claim:
1. In a sewing machine for producing a double seam or row of stitching, the
mechanism for driving the additional or secondary shaft, substantially as described and
shewn by Figs. 1, 2, and 3 of the accompanying drawings..
2. In a sewing machine for producing a double seam or row of stitching, the
modified arrangement of mechanism for driving the additional or secondary shaft,
substantially as described and shewn in Figs. 4 and 5 of the accompanying
drawings.
3. In a sewing machine for producing a double seam or row of stitching the
modified arrangement of mechanism for driving the additional or secondary shaft,
substantially as described and shewn in Figs. 6 and 7 of the accompanying
drawings.
4. The improved sewing machine for producing a double seam or row of stitching,
having its parts arranged combined and operating, substantially as described and
shewn by the accompanying drawings.
Dated this 11th day of Ja
1000
ERNEST DE PASS,
68, Fleet Street, London, Agent for the Applicant.