Improvements in Sewing-machines.
Year: 1898

page_text: Date of Application, 5th Oct., 1898-Accepted, 1st Apr., 1899
[Communicated from abroad by LANDIS WAX THREAD SEWING MACHINE COMPANY,
a Corporation incorporated under the laws of the State of Missouri, and
engaged in business at 1700, Morgan Street, in the City of Saint Louis and
State of Missouri, United States of America.]
Improvements in Sewing-machines.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, 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:-
This invention relates to improvements in sewing-machines, and more especially
in the class of wax-thread machines used in the manufacture of harness and other
leather goods; and it consists, first, in the construction, combination and operation
of the feed-lever and the different parts comprising the working-head; second,
the combination of the feed-regulating-mechanism; third, the combination of the
tension lock-mechanism for regulating the throw of the tension-lever; fourth,
the combination of the shuttle-carrier and its actuating-mechanism; fifth, the
combination of the adjustable loop-forming mechanism; and sixth, in the combina-
tion of the waxing-mechanism, and keeping the wax in a fluid condition.
All the different parts are actuated, directly or indirectly, from the driving-
shaft, and all the parts combined to produce a complete working machine capable
of sewing through any kind of leather.
In the drawings:
Figure is a front elevation of a machine embodying the improved features.
Figure 2 is a rear side-elevation.
Figure 3 is a front-end-elevation of the head of the machine.
Figure 4 is a broken-away part elevation and part section, on line 4, Fig. 5,
looking in the direction indicated by the arrow.
Figure 5, a plan section, on line 5, Fig. 4.
Figure 6 is a broken-away detail of the upper end of the needle guide-bar,
showing the spring for returning the same to its normal position.
Figure 7 is a plan-section, on line 7, Fig. 4, showing the structure of the needle-
guide in detail.
Figure 8 is a sectional elevation on line 8, Fig. 5.
Figure 9 is a sectional elevation on line 9, Fig. 5.
Figure 10 is a broken away plan of the head-end of the machine.
Figure 11 is a broken-away part elevation and part section of the rear end of
the machine looking from the back side, showing in detail the means employed
for raising this end. of the presser-foot-lever.
Figure 12 is a plan-section on line 12, Fig. 1.
Figure 13 is a vertical section on line 13, Fig. 12, showing the feed-lever cam-
wheel in elevation.
Figure 14 is a vertical section on line 14, Fig. 12, showing the forked feed-lever
in part with details.

page_text: The guide-bar C³ is square in cross-section and extends above the head of the
machine; the upper end being retained in position by a guide-bracket, 68, bolted
to the top of the overhanging arm. A hitung-dog, D, having a square aperture
in the front end thereof to correspond to and fit the guide-bar, is loosely mounted
thereon. The rear end of the lifting-dog rests loosely on a friction-roller, d,
journaled in the front end of a vibrating lifting-lever, D. This lever is provided
with a pivotal-bearing, a', (Fig. 2) and runs downwardly from this point to the
main driving-shaft, and has a triction-roller, a, (Fig. 11) journaled in the rear
end thereof. The driving-shaft is provided at this point with a cam-projection, d*,
that comes in contact with roller, ds, once in each revolution, depressing this end
of lever and raising the opposite end, which in turn raises the end of the lifting-
dog D resting thereon. Kaising this end of the dog at an angle from its horizontal
position causes the opposite end with its square aperture to clamp and raise the
guide-bar C, which carries the presser-foot-bar with it. When the cam-projection
'The
nas passed out of contact with the roller ds of lever D₁, the spring do, coned on
the guide-bar and bearing on the dog D, forces the same downwardly to its normal
position and with it this end of lever D', and throws the opposite end back in the
pathway or the cam to receive the contact thereof for the next movement.
guide-bar and presser-foot-bar are returned downwardly by a fat spring, d; the
rear end of which is bolted on top of the overhanging arm, as at a (Fig. 2) and
the front depressing-end bears on the extension, 6, of the presser-100-bar. A
stop, as, (Fig. 8) is located just under the front end of the guide-bar dog, D, and
is adjustable with reference thereto by a set-screw, a³.
the contact of the dog with this stop causes it to release its grip on the guide-bar
at the proper time.
On the down movement
A needie guide-bar, E, is located just in advance of the needle-bar A3 and is
adapted to have a vertical movement so that the guide-bar will follow the move-
ment of the needle. This needle-guide-bar has an arm, g, mounted on the upper
end thereof, which extends across the upper end of and in the pathway of the
needle-bar. Un the lower end of the guide-bar is mounted a needle-guide-foot, F',
provided with a split, g (Figs. 3, and 4) for the removable insertion of a sleeve
or bushing, g, through which the needle plays.
The screw, g, provides for the adjustment of the split end in changing sleeves
of different sizes in accordance with needles of different diameters.
An up-movement is imparted to the needle guide-bar by the upper end of the
needle-bar coming in contact with the arm g; and the down-movement by a
spring, 4, one end of which rests in a lug, g' (Figs. 4 and 6) formed on the armi g;
the opposite tension-end being secured on the overhanging arm, as at g".
This arrangement provides a close-fitting needle-guide and causes the same to
follow the movement of the needle and thereby greatly lessens the liability of the
needle to bend or break.
A rubber-buffer, g (Fig. 6) is inserted in the underside of arm, g, and lessens
the contact-shock of the needle-bar.
The downward movement of the needle guide-bar is arrested by a stud, h,
(Fig. 9) projecting from the presser-foot guide-bar, C; the lug g, of the arm g,
coming in contact therewith and resting thereon until the needle-bar returns on
the up-movement. This prevents the needle guide-bar from descending too far,
otherwise the guide would come in contact with the presser-foot.
The feed-lever C is provided with the rear-extension, 1, on the top of which is
mounted an auxiliary lever, 2, attached thereto by means of a pivot-pin, 3. The
A
outer end of this lever 2 (Fig. 14) has a friction-roller, 4, journaled therein.
feed-lever cam-wheel, 5, is rigidly mounted on the driving-shaft, and is provided
with a raised cam-surface, 6 (Fig. 13) with which the friction-roller 4 of lever 2
is adapted to have frictional contact once in each revolution of the wheel, and,
thereby, imparting the required vibratory action to the feed-lever.
The adjustment or throw of the feed-lever is varied by a heavy or light contact

page_text: of the lever 2 with the cam-surface 6 for the purpose of lengthening or shortening
the stitch. This heavy or light contact is regulated by means of a screw-rod, 7
extending through the base to the front side of the machine so as to be withi
convenient reach of the operator. This rod is inserted loosely in the base par
and passes through the rear end of the feed-lever and has a threaded engagemen
therein. The rear end of this rod is inserted loosely through the inner end o
lever 2 (Figs. 2 and 12) and has a collar, 8, fixed therein. The bearing-surface
of this collar is provided with a series of ratchet-like teeth, 9, engaging with a
rib, 10, (Fig. 16) on the end of lever 2, which will prevent the rod from turning
accidentally, when once set, by the jar or vibration of the machine; but will
readily permit of its being turned or adjusted by hand.
The spring, 11, coiled on the rod, serves to hold the end of the lever 2 up
against the ratchet-collar, 8. A portion of a spring, 12, is coiled around a sup
porting-bolt, 13, inserted in lugs, 14, (Fig. 14) formed in the base-part. The
loose end of this spring bears against a post, 15, fixed in the rear extension of the
feed-lever, and serves to return the latter to its normal position and bring the
roller-end of lever 2 back in the pathway of the cam each time after the said cam
shall have passed out of contact.
A bracket, 16, is bolted on the shoulder of the overhanging arm, A. On the
outer end of this bracket are supported the corresponding ends of a double-plate
tension-spring, consisting of the upper member, 17, and the lower member 18.
The inner end of the spring-supporting bracket is provided with a fulcrum-post, 19,
on which the springs bears at this point; the inner end thereof extending beyond
this bearing-point, as shown in Fig. 1. The under spring-member is provided
with the bowed-part, 20, for the purpose of increasing the resistance thereof and,
incidentally, to conveniently permit of the insertion of the thread, 21 through an
aperture, 22, in the upper spring-member.
A rod, 23, has a vertical position back of the take-up-lever, 24, and the needle-
lever A². On the upper end of this rod is mounted an open collar, 25, adjustably
clamped thereon by means of a screw, 26. This collar is provided with a hori
zontal finger-projection, 27, extending across (Figs. 17 and 18) the top of the inner
ends of the springs and bearing thereon at a point in advance of the fulcrum-
post, 19. The pins, 28, prevent the compressing-finger from having a lateral
movement. On the lower end of rod 23 is adjustably mounted a collar 29 having
lug, 30, (Fig. 18) projecting towards the needle-lever. A corresponding lug, 31,
is formed on the needle-lever and is adapted to have an intermittent contact with
lug 30 through the vibratory action of said lever, as will be explained further
along,
a
1
It will be noted that the rod 23 hangs loosely in position, being suspended from
the finger-projection, 27, bearing on the tension-spring members, and is so adjusted
that the lug on the needle-lever, on the down-movement, comes in contact with
the lug on rod 23 and forces the same downwardly, which has the effect of bending
down the inner ends of the tension-spring members and clamping or locking the
thread therebetween at the proper time with reference to the movement of the
needle and the take-up lever so as to always insure an even pull-in for every stitch.
The contact of the lug on the lower end of rod 23 and the lug on the needle-
lever is of but short duration, and is regulated by the adjusting-collars and timed
with reference to the movement of the co-operating parts.
When the pressure of the lug on the needle-lever is relaxed, the rod 23 is raised
to its normal position by 'the tension-spring; the down-movement bending said
spring over its fulcrum-post. The tension of the double-spring is regulated by
a thumb-screw, 32, inserted down through the 'springs and having a threaded
engagement in the bracket suppport.
The take-up-lever, 24, 'is provided with a pivot-bearing, 33, and has a friction-
roller, 34, mounted on the rear end thereof. To the vibrating needle-lever, just
under this end of the take-up-lever, is secured a lifting-plate, 35, having its con-

page_text: tacting-edge beveled, as at 36. The plate is adjustably secured to the needle-
lever by a clamping-bolt, 37, inserted through a slot, 38, in said lever, so that
the contact with the take-up-lever may be earlier or later, as the nature of the
work requires.
The downward movement of 'the rear end of the take-up-lever is arrested by a
stop, 39, so that the lifting-plate and take-up-lever do not have a continuous
contact, but, when in the position illustrated in Fig. 1, they are separated by a
considerable space; the needle being at about its highest point. As the needle
enters the work, the lifting-plate is set to come in contact with and raise the rear
end of the take-up-lever against the action of its spring and causes a corresponding
downward movement of the front end thereof.
To the rear end of the take-up-lever is connected one end of a spring, 40; the lower
end of which is connected with an adjusting-screw, 41, inserted loosely down
through a lug, 42, and having an adjusting-nut, 43, threaded on the lower end
thereof. This spring 40 returns the lever to its normal position and provides for
a tension adjustment with reference to the weight of the thread.
The shuttle cam-wheel, 44, is provided with an eccentric groove or pathway, 45;
the cam-part, 46, surrounded by this groove, being flattened and slightly depressed,
as at 47, Fig. 20.
A rocking lever-arm, 48, provided with a hub, 49, is loosely mounted on a pivotal
bearing-pin, 50, seated in a part, 51, formed on the base and retained therein by
a set-screw, 52, Fig. 19.
The inner or upper end' of lever 48 carries a friction-roller, 53, journaled therein
and working in the eccentric or cam groove 45. The sides of the cam groove
have contact with this roller and thereby imparts the required rocking movement
to lever 48. To the opposite or longer end of this lever, as at 55, is connected
the lower end of an arm, 56; the upper end being connected to the rear end of a
reciprocating shuttle-bar, 57, by a pin 58. This bar (Fig. 23) is recessed in the
inner side of the base A, 'a guide-way being formed therein for this purpose, and
is provided with a groove, 59, engaging with a guide-rib, 60, holding the bar in
place and keeping the same in alignment in its longitudinal movement.
To the inner end of the shuttle-bar, 57, is secured the shuttle-carrier, 61, which
is provided in each end with a 'flexible lining or cushion, 62. These cushions
will, ordinarily, be made of leather, rubber, or similar material, and they serve the
purpose of cushioning the shuttle and preventing the same from rattling in the
carrier by breaking the concussion. They also prevent the wear of the contacting-
parts.
A flat metallic spring, 63, secured inside of the carrier by a screw, 64, (Figs. 20
and 22) holds the shuttle 65 in its position against the front side of the race, as
shown in Fig. 19.
The arrow over the wheel A in Fig. 1 indicates the direction in which the driv-
ing-shaft rotates, and in the relative position of the different parts illustrated
in Figs. 19 and 20, the shuttle-carrier is at its innermost position; the friction
guide-roller resting in the depression, 47, in the cam groove. The shuttle reaches
its innermost position when the low part, 66, of the cam groove comes in contact
with the roller and then remains stationary until the cam reaches the position
shown in Fig. 20, when the shuttle begins its outward movement, the end of which
is reached when the highest part, 67, of the cam groove is in contact with the
roller this movement being accomplished through the connecting mechanism
described.
6S is a shoe or former provided with pivot-pins, 69 and 70, (Figs. 25 and 26)
projecting from each side below the upper end. By means of these pins the shoe
is loosely hung adjacent to the front side of-the shuttle-race, (Figs. 24 and 25)
just below the feed-plate or dog, a³, and in the pathway of the needle. This
shoe is provided on the face-side with a channel or groove, 71, for the passage of
the needle. The front side of the needle bears against the bottom of this channel

page_text: An
on its passage through the shuttle-race, 72, as shown in Fig. 24. This has the
effect of forcing the thread out into the race and forming the loop, 73, in the patn-
way of the shuttle, 65, at the proper uime and thus avoids skipping stitenes.
adjusting-boit or screw, 74 inserted from the front side, bears against that 'side of
the shoe below its pivotal point of support and provides for the adjustment of
the shoe on its pivot, both with reference to the wear on the needle and the
different sizes of the same, for the purpose of insuring a continuous contact and
bearing on the front side of the needle and the positive action of throwing out
the thread on the opposite side and forming the loop to receive the point or the
shuttle, as shown in Figs. 24 and 25.
In the supporting-base, under the head of the overhanging arm is located a
closed heating-tank, 75, in which is seated a wax-reservoir, 76, opening above the
same, as shown in Fig. 27. In one end of the wax-reservoir is located a pump-
cylinder, 77, and a plunger, 78, adapted to have a reciprocating movement therein
through the media of the following mechanism.
A rocking-pump-lever, 79, (Fig. 1) is pivoted near its longitudinal centre, to the
base, as at 80. The inner end of this lever bears upon the upper end of the pump-
plunger. To the outer or opposite end and underside of this lever is attached
one end of a spring, 81, the other end of which is supported from the rear part of
the base. The upper end of the plunger. is provided with an opening, 82, extending
horizontally therethrough.. In this opening is loosely inserted one end of a spring-
arm, 83; the other end being secured to the front part of the base, as shown
at 84.
(
A cam-projection, 85, is mounted on the driving-shaft and is adapted to have
an intermittent contact with the rear end of the pump-lever and depress the same,
against the pressure of spring 81, once in each revolution of the driving-shaft.
When the cam depresses the lever, the spring 83 raises the plunger, and as the cam
passes on out of contact the spring 81 throws that end of the lever up and the
other or front end down; thus imparting an automatic reciprocating action to the
pump-plunger coincident with that of the movement of the machine proper.
The lower end of a tube, 86, is tapped into the raised portion, 87, of the inside
bottom of the wax-reservoir. An adjustable wax-cup, or 'sleeve, 88, is telescopically
mounted on the upper end of tube 86, in the pathway of the needle. This wax-
cup is provided with a laterally projecting lug, 89, Figs. 27 and 30, with which the
lower end of an adjusting-stud, 90, has a threaded engagement. The upper
threaded part of this stud-bolt has an adjusting-nut, 91, threaded thereon. This
nut is provided, integrally, with an annular grooved base, 92, engaging with the
edge of a plate, 93, secured to the top of the wax-reservoir.
Turning the nut, 91 'has the effect of running the stud up or down in accordance
with the direction in which the nut is turned. This movement imparts a corre-
sponding movement to the wax-cup on 'tube 86 raising or lowering the same for
the purpose of regulating the dip of the needle in the cup, so that the thread' may
receive more or less wax, as the nature of the work may require.
The fluid-wax flows from the reservoir into the well-chamber, 94, through a
port, 95, which is momentarily uncovered when the plunger is in its highest
position. On the down-stroke the plunger closes the port and forces the charge
of wax through passage, 96, and tube 86 up into the wax-cup; the overflow return-
ing down the outside of the same into the reservoir again. A ball-valve, 97, is
loosely seated in the upper part of tube 86 and closes the passage therethrough
against a back-flow when the plunger is on the up-stroke.
A gauze strainer, 98, in the wax-cup, prevents bits of leather and other foreign
matter from getting to and interfering with the working of the ball-valve and
clogging the passage communicating with the pump.
The wax may be kept in a fluid state by a body of water, 99, in the tank, as
shown, which may be heated by gas, steam or electricity. By this arrangement
a continuous and uniform flow of the wax is maintained, and the same kept in a
fluid state at an even temperature.

page_text: When a body of heated water is used to keep the wax in a fluid state, the tank
is provided with a safety-valve-attachment, 100 Fig. 12. Ordinarily the water in
the tank will be kept below the boiling point, but should it reach a temperature
sufficient to generate steam under pressure the same will escape through the
safety-valve.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim, is:-
1. In a sewing-machine, the combination with a forked feed-lever, having a
vibratory action in a horizontal plane, of a lower feed-dog secured to the lower
member of said lever, and a presser-foot-bar, carrying the upper feed-dog or presser-
foot and secured to the upper member of said lever, whereby a positive movement
is imparted to said feed-devices, simultaneously, substantially as described.
2. In a sewing machine, the combination with a feed-lever and means for
actuating the same, of a slotted link, mounted on the upper front end of said lever,
a presser-foot-bar, having a movable connection with said slotted link, a guide-
bar, to which the presser-foot-bar is pivoted, and means for imparting a vertical
movement to said presser-foot-bar and guide-bar, simultaneously, substantially as
described.
3. In a sewing-machine, the combination with a presser-foot-bar, of a guide-
bar, to which the presser-foot-bar is pivoted, a lifting-dog, loosely mounted on the
upper end of the guide-bar, a vibrating lifting-lever, the front end whereof has
frictional contact with said lifting-dog, the driving-shaft, provided with a cam
projection adapted to have an intermittent contact with and depress the rear end
of said lever, and a spring, imparting a downward movement to said presser-foot-
bar and guide-bar when the lifting-pressure of the said vibrating-lever is relaxed,
substantially as described.
4. In a sewing-machine, a forked feed-lever and means for vibrating the same
horizontally, the feed-dog connected to the lower member of said lever, and the
presser-foot having linked connection to the upper member of said lever, and means
for lifting said presser-foot, all combined substantially as described.
5. In a sewing-machine, the combination with a forked feed-lever, and means
for vibrating the same in a horizontal plane, of a feed-dog attached to the lower
member thereof, a slotted link, mounted on the upper member, a presser-foot-bar,
connecting at its lower end with said link, a guide-bar, to which said presser-
foot-bar is pivoted, a spring-pressed lifting-dog, loosely mounted on said guide-bar,
a vibrating lifting-lever, the front end of which has frictional contact with the
under side and rear end of sail lifting-dog, the driving-shaft, provided with a
cam-projection adapted to have an intermittent contact with and depress the rear
end of said lever, and a spring, bearing on and imparting a downward movement
to the presser-foot-bar, substantially as described.
6. In a sewing-machine, the presser-foot above the work-table, and means for
reciprocating the same vertically, the feed-dog below the work-table and means for
reciprocating the same horizontally, and mechanism substantially as described
connecting the feed-dog and presser-foot, and serving to actuate said presser-foot
in a horizontal direction, all combined substantially as described.
7. In a sewing-machine, the vertically movable guide-bar and presser-foot
vieldingly connected thereto, the clamping-dog, embracing said guide-bar, the
operating-lever, engaging said dog at one side of the bar, to clamp and lift it,
and the spring engaging said dog to depress it, all combined substantially as
described.
8. In a sewing-machine, the reciprocating needle-bar, the needle guide-bar in
advance of the needle-bar and having an arm in the path of movement of the
needle-bar, the needle guide-foot at the lower end of said needle guide-bar, having
an adjustable sleeve through which the needle plays, all combined substantially as
described.

page_text: 9. In a sewing-machine, the vertically reciprocating needle-bar, the vertically
movable needle guide-bar actuated in one direction by the needle-bar and in the
other by a spring, and supporting the needle as described, and the presser-foot-
guide having a stop for the needle-guide-bar, all combined with suitable driving
mechanism, substantially as described.
10. In a sewing-machine, the combination with a forked feed-lever, pivotally
mounted and adapted to have a vibratory movement in a horizontal plane, an
auxiliary lever, pivotally mounted on the rear end of the feed-lever, a cam-wheel,
adapted to have an intermittent contact with the rear end of said auxiliary lever,
the driving-shaft, mounting said cam-wheel, an adjusting screw-rod, inserted
through and having a threaded engagement in the feed-lever and passing loosely
through the inner end of said auxiliary lever, a collar, fixed on the back end of
said rod and bearing against the adjacent surface of the auxiliary lever, and a
spring, coiled on said röd, substantially as described.
11. In a sewing-machine, the combination with a forked feed-lever, of an
auxiliary lever, pivotally mounted on the rear part of the feed-lever, an adjusting
screw-rod, inserted through said feed-lever and auxiliary lever, a collar, mounted
on the back end of said rod, and a spring, coiled on said rod between the feed
and auxiliary levers, substantially as described.
12. The plate tension-spring supported on a bracket on the machine-arm as
described, a vertical rod having a collar held thereon by a set-screw, said collar
having a finger-projection extending across the upper spring at one side of the
fulcrum thereof, pins extending from said spring and retaining the said finger
against a lateral displacement, and a collar adjustably mounted on said vertical rod,
said collar having a lug projecting toward the needle-lever and in position to be
engaged thereby as said lever vibrates, all combined substantially as described.
13. In a sewing-machine, in combination with the necessary supporting parts,
the driving-shaft, the cam-wheel thereon having a nearly circular cam-race, one
side of said cam-race being flattened, a rocking-lever, having an arm in the cam-
groove, the other arm of said lever being connected by a link or arm to a recipro-
cating shuttle-bar, said bar having a groove therein, which groove engages a rib
on the frame.
14. In a sewing-machine, substantially as described, the shuttle-carrier having
a recess for the shuttle and a non-metallic cushion at each end of said recess, and
a flat metallic spring in the bottom of said recess and between the cushions.
15. In a sewing-machine, the vertically reciprocating needle, the loosely hung
shoe below the base-plate having a substantially vertical groove in its face into
which one side of the needle enters, and the reciprocating shuttle moving hori-
zontally across the shoe in proximity to said shoe, all combined substantially as
described.
16. In a sewing-machine, the vertically reciprocating needle, the shoe below
the base-plate hung on a horizontal pivot and having a substantially vertical groove
into which the needle enters, and means for adjusting said shoe on its pivot, toward
or from the needle, all combined substantially as described.
17. In a sewing-machine, the combination of a wax-reservoir, a heating-device
for keeping the wax in a fluid condition, a pump-cylinder communicating with
the heated wax-chamber, a plunger working therein, a rocking-lever pivoted to
the base of the machine and having one end bearing on the upper end of said
plunger, the driving-shaft, mounting a cam which is adapted to have an inter-
mittent contact with and depress the outer end of said lever, means for raising
said lever when the cam has passed out of contact, and means for raising said
plunger when the pressure of the lever thereon is relaxed.
18. In a sewing-machine pump-attachment, comprising a well-cylinder, a
plunger, a rocking or working-lever, pivoted to the base of the machine, a cam
mounted on the driving-shaft and adapted to have contact with and depress the
outer end of said lever once in each revolution, a spring adapted to force the lever

page_text: upwardly when the cam passes out of contact, and a spring outside of the well
and connected with and raising the pump-plunger when the inner end of the
lever has been raised out of contact therewith by the cam acting on the opposite
end thereof.
19. In a pump-attachment for sewing-machines, the combination of a pump-
plunger having an opening through the upper end thereof, a spring-arm secured
to the base part of the machine and having its loose end inserted through said
opening, a rocking-lever pivoted near its longitudinal center to the base, the inner
end bearing on said plunger, a spring connected to the outer end of said lever, and
the driving-shaft having a cam mounted thereon which is adapted to have an
intermittent contact with and depress the spring-pressed end of said lever.
Dated this 5th day of October 1898.
Witnesses:
LANDIS WAX THREAD SEWING MACHINE COMPANY.
L. D. PUTNAM,
J. W. DREW.
By Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.