An Improved Sewing Machine for Sewing the Mouths of Bags or Sacks when Full.
Year: 1898

page_text: An Improved Sewing Machine for Sewing the Mouths of Bags or
Sacks when Full.
We, JOHN CROOK, Hatter, and ERNEST WHITEHEAD, Baker, both of Surrey
Hills, near the City of Auckland, in the Provincial District of Auckland and
Colony of New Zealand, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:.
-
Our invention relates to a machine for sewing up the mouths of filled sacks
such as are used for bagging sugar, flour, grain, and the like. This work has
heretofore commonly been done by hand, although we are aware that attempts
have been made to perform the operation by means of machines. The mechanical
sewing of filled sacks has never, to our knowledge, however, passed beyond the
experimental stage, by reason of the fact that no practical machine has been
devised which would reliably and rapidly perform the work and offer any decided
advantage over land labour. It is the general object of our invention, therefore,
to provide a machine which shall be simple in construction, reliable in operation
and which shall operate to sew up the mouths of sacks which have been filled,
in as secure a manner as can be done by hand and far more expeditiously.
Our invention therefore consists in the features of construction and combina-
tions and operations of parts which will be hereinafter fully described and par-
ticularly pointed out in the claims.
The invention is illustrated in the accompanying drawings, in which:
Figure 1, is a front elevation of the machine;
Fig. 2, is an end elevation, looking toward the left;
-
Fig. 3. is a similar view, looking in the opposite direction, and showing the
mouth of the sack held in the clamping jaws, and also showing the device for
forming the ear on the sack;
Fig. 4, is a detail view of the cutting mechanism, the cutting blade being in
a lowered position;
Fig. 5, is a transverse sectional view through the spindle, the needle and the
notched guides for the head carrying the needle.
.
Fig. 6, is a sectional plan view of the top portion thereof, the section being
taken on the line, 2-2, of Fig. 1;
Fig. 7, is a front elevation of certain parts of the machine to illustrate the

page_text: position of these parts at the end of the forward movement of the head and
needle;
Fig. 8, is a detail perspective view illustrating the manner of forming the ear
on the sack;
Fig. 9, is an enlarged view, in front elevation, illustrating the position of the
parts as the head and needle near the end of the backward movement; and
Fig. 10, is a view of a sack which has been sewed and secured according to our
invention.
1, indicates the base of the machine, upon which are supported hollow
standards, 2. 3, indicates an extension of the platform at the front of the
machine, having at each end a roller, 4, on which rollers is supported an endless
carrier, 5. The platform extension, 3, is open at the top, and the carrier, 5,
travels in this opening and provides a movable surface for conveying the filled
bags or sacks to and from the sewing mechanism as more fully hereinafter
explained. At the right hand end of the machine, as shown in Figure, 1, the
shaft of the roller, 4, has on its end a small gear wheel, 6, which meshes with a
large gear wheel, 7, journaled on the platform extension, 3. 8, indicates a
handle which is journaled at its lower end on the shaft of the gear, 7, and carries
a ratchet, 9, engaging the teeth of said gear. By moving the handle, 8, toward
the left the gear wheel, 7, will be turned and through the medium of gear, 6, will
operate to move the carrier, 5, a given distance toward the right. 10, indicates
an upper support, on which are mounted the main operating parts, and depend-
ing from the underside of which support is a series of pillars, 11, which are
movably seated in the standards, 2. Journaled in suitable bearings, 12, on these
standards is a rod, 13, having cogs, 14, secured at intervals thereon, which cogs
mesh in racks, 15, one of which is provided on the rear side of each pillar, 11.
as shown in dotted lines in Fig. 2. On the end of the rod, 13, is a hand-wheel, 16,
for turning the rod. By turning this rod in one direction or the other, the
support 10, may be raised or lowered, according to the height of bags or sacks
to be sewed, and held in its adjusted position in any suitable manner. Near the
left hand end of the support, 10, is located the device for clamping and holding
the upper edges of the sack to be sewed. This device comprises the following
parts Secured on the front of support, 10, is a jaw, 17, having a longitudinal
concave or recess, 18. 19, indicates a complemental jaw having a similar concave
or recess, 20. The jaw, 19, is secured to one end of a pair of levers, 21, which are
journaled on a short shaft, 22, secured in bearings, 23, mounted on the upper
side of support, 10. The opposite or rear ends of the levers, 21, are pivotally
secured to the upper end of a rod, 24, which, at its lower end, is pivotally con-
nected to a bar, 25, fulcrumed in the base of the machine and extending through
the same to the front of the machine where it is provided with a treadle, 26.
By pressing down on this treadle the rod, 24, is raised, thereby rocking the lever
mechanism, 21, and causing the jaw, 19, to be brought in contact with the jaw, 17.
In practice, the lower edges only of these jaws engage the bag between them,
as shown in Fig. 3. Journaled on one of the bearings, 23, is a bell-crank
lever, 27, one member of which is extended to afford a handle, 28. To the other
member of this lever is secured a curved arm, 29, which works in an opening, 30,
in the support, 10. By moving the handle, 28, toward the rear of the machine,
or in a direction away from the operator, the curved arm, 29, is caused to move
outward, or toward the operator, through the opening, 30. The purpose of this
device will be presently described. The mechanism for sewing the sacks, and
the parts co-operating therewith will now be described.
The right hand portion of the support, 10, is provided with a longitudinal
opening, 31. Secured along the front of the support, 10, and at the bottom and
top edges, respectively, of this opening, are two steel plates, 32, the opposing
edges of which are provided with notches, 33, which are so arranged as to form
sections of a complete interior screw-thread. Mounted between these plates is a
revolving head, 34, provided with a circumferential, spirally arranged rib, 35,

page_text: engaging in the notches, 33, in the manner of a screw-thread. The head, 34,
is non-rotatively and slidably mounted on a revolving square spindle, 36, which,
at its inner end, is mounted on a point bearing as shown at 37, and, at its opposite
end, is journaled in and extends through a bearing, 38, the bearings, 37,
5 and 38, being located, respectively, at opposite ends of the slotted portion of the
support, 10.
Secured on the outer end of spindle, 36, is a gear, 39. Mounted
in bearings, 40, located, respectively near opposite ends of the slotted part of the
support, 10, is a shaft, 41, having on its outer end a gear, 42, which meshes
with the gear, 39, and, on its inner end, a gear, 43. The inner bearing, 40, is
extended upward a sufficient distance to permit of a gear, 44, being mounted
on a bearing at the side thereof, said gear, 44, meshing with the gear, 43, and
being revolved by means of a crank-arm, 45. The plates, 32, form, as it were, a
notched or screw-threaded guide for the head, 34, so that, when the spindle, 36,
is revolved in one direction or the other through the medium of the mechanism
just described, the head, 34, will be caused to revolve and to slide backward or
forward on the spindle by reason of the engagement of the spiral rib or thread, 35,
with the notches, 33. Secured on the inner end of head, 34, is a long spiral
needle, 46, made of tempered spring steel, said needle having a pointed end and
being provided, near said pointed end, with an eye, 47. The outer circumferential
surface of the spiral needle is provided with a continuous groove, 48, which
extends from the butt of the needle to the eye, 47. In its normal position, the
needle, 46, lies coiled about but out of contact with the spindle, 36. The spiral
rib or thread, 35, being of a greater circumference than the spiral needle, is given
a greater angular inclination relatively to its axis than that given the spirals
of the needle, but the pitch or distance in a straight line, between the convolu-
tions of the spiral needle and between those of the spiral rib or thread, 35, is the
same, so that the screw-motion or throw of the head is the same as that of the
needle.
Located on the support, 10, at about the relative position shown, is a vertical
spindle, 49, for receiving a bobbin, 50, containing the thread, 50", for sewing
the sacks. In order to prevent the bobbin from turning too freely, I may
employ a spring, 49", or any suitable form of tension device. Secured on the
support, 10, about centrally of the slotted portion thereof and extending there-
from to the rear, is a rectangular frame, 51, the upper bar, 52, of which is squared
to form a guide for a slide, 53, mounted thereon. At the rear of frame, 51, is a
roller, 54, over which passes a cord, 55, having, at its outer end, a weight, 56.
The opposite end of the cord, 55, is secured in an eye, 57, on slide, 53. On the
slide, 53, is mounted a roller, 58. On the inner bearing, 40, is secured an arm, 59,
on which is mounted a roller, 60. The cord from the bobbin is passed around
the roller, 58, thence over roller, 60, and through the eye of the needle to the
combined cutting and holding mechanism, 61, to be presently described, where
its end is secured. The slide, 53, with the weighted cord, 55, affords an automatic
tension or take-up device for the cord passing from the bobbin about the needle,
in the operation of the latter. Depending from the support, 10, adjacent to the
cutting mechanism, 61, is a square rod, 62, forming a guide for a slide, 63,
mounted thereon. Secured to said slide, and extending upward therefrom, is an
arm, 64, which is provided with an off-set, 65. Beyond said off-set, the arm, 61,
s curved slightly outward, and, on the inner side of its upper end, is mounted
roller, 66. This roller takes over the thread lying between the eye of the
needle and the cutter, and, by pulling the slide, 63, downward, to the position
shown in Fig. 1, a sufficient amount of thread is provided to permit the needle
o pass freely through the material being sewed and to carry the thread with it,
without the necessity of the thread having to be pulled or fed through the eye
of the needle. It is necessary that the correct length of thread, or cord, be
measured off by pulling down slide, 63, as hereinafter explained, and to regulate
his operation, the lower end portion of the squared rod, 62, is screw-threaded
nd provided with an adjusting-nut, 67. By turning this nut in one direction

page_text: or the other, the distance the slide, 63, can be moved downward may be regu-
lated, as will be understood. Mounted in the bottom of the slotted part of
support, 10, in bearings, 68, is a slide-bar, 69, having near opposite end stops, 70,
71, respectively. Secured on the inner end of this slide-bar, 69, is a plate, 72,
having its outer end pointed and provided with an inclined surface, 73, so that
said plate forms a wedge. The slide-bar, 69, is moved backward and forward by
the engagement of the head, 34, with one or the other of stops, 70, 71, and in
its inward or forward thrust the inclined part of plate, 72, engages beneath the
off-set, 65, and raises the slide, 63, as shown in Figs. 7, and 9, so that the
roller, 66, will lie above the thread extending between the cutting mechanism, 61,
and the eye of the needle and be in a position to engage said thread when the
head, 34, on its return, engages stop, 71, and moves the slide-bar, 69, back-
ward, thereby drawing the wedge, 72, backward and permitting the slide, 63,
to fall, all of which will more clearly appear from the description of the opera-
tion of the machine given further on. The plate or wedge, 72, could, of course,
be made an integral part of the structure of slide-bar, 69.
The cutting mechanism, 61, and the manner of operating the same will now
be described: Secured on the front of the support, 10, adjacent to the inner end
of the slotted portion thereof, are two parallel steel plates, 74, 75, the lower side
of plate 74, being provided with a cutting edge, 76, while the lower side of
plate, 75, has its edge blunted or somewhat rounded. Pivotally mounted between
these plates is the cutter, 77, which has one edge sharpened to co-operate with the
cutting edge, 76, and its opposite edge blunted and somewhat beveled to co-operate
with the plate, 75, so that in one operation the thread will be cut by this
mechanism and the end of the thread leading from the eye of the needle will be
wedged in between the blunt edge of the cutter and plate, 75, as shown in Fig. 9.
The cutter, 77, is practically semi-circular in form, its end furthest removed
from the operator projecting above the plates, 74, 75, and having a slotted con-
nection with a lever-arm, 78, working in an opening extending through the
support, 10. Pivotally mounted, at 79, in the support, 10, is a bell-crank lever, 80;
one member, 81, of which is semi-circular in shape and pivotally connected, at
its free end, to the inner end of the lever-arm, 78. The other arm, 82, of the
bell-crank lever projects rearward, and is formed with a slot, 83. At the rear
of the support, 10, and extending from end to end thereof, is a bar, 84, which is
slidably supported in bearings, 85. Secured to this bar in a suitable manner,
preferably adjustably, is a pin, 86, which works in the slot, 83. Pivotally
mounted on the bottom of the slotted part of the support, 10, and near opposite
ends thereof, are two tappets, 87, 88, respectively, their pivots being indicated
at 89, 90. These tappets, at their rear ends, are slotted, as indicated at 91, and
secured to the bar, 84, preferably adjustably, are two pins, 92, 93, which engage
in the respective slots, 91. The inner end of each tappet projects into the
path of head, 34, these projecting ends being respectively indicated at 94, 95.
The operation of the machine is as follows:
The parts being in the position shown in Fig. 1, a filled sack, to be sewed up,
is placed on the carrier, 5, and the handle, 8, is manipulated to rotate this carrier
and move the sack beneath the jaws, 17, and 19. One edge of the mouth of the
sack is preferably doubled over the other, and the mouth of the sack is then
clamped between the bottom edges of the jaws, 17, and 19, by pressing
the treadle, 26, down with the foot. The crank, 45, is now turned in a direction
away from the operator, which, through the gearing described, will cause the
spindle, 36, to revolve. The head, 34, being non-rotatively mounted on the
spindle, 36, will revolve with it, and the spiral rib or thread, 35, engaging the
notches, 33, said head with the needle, 46, will thereby be carried forward. As
the needle moves forward, it enters the guide formed between the two jaws, 17,
and 19, by the recesses, 18, and 20, and its pointed end pierces the fabric of the
sack and carries the thread continuously through and over the doubled edge,
closing the mouth thereof by an over-and-under stitch, as more clearly repre-

page_text: sented in Figures, 7, 8, and 10. In the position of the parts shown in Fig. 1,
the thread, 50, having been pulled down by means of the slide, 63, the roller, 58,
and slide, 53, have thereby been pulled forward or toward the operator, raising the
weight, 56, this position being shown in Fig. 2. As the needle starts to revolve,
the thread above the eye, 47, will seat in the groove, 48, continuing to do this
as long as the needle revolves forward, the weight of slide, 63, being
sufficient to prevent the thread from slipping through the eye of the needle.
The thread that is wound about the needle in the spiral groove, 48, is therefore
unwound from the bobbin. In the forward movement of the needle, the thread
below the eye thereof passes over the upper side of the cutting device, 61, and
draws the slide, 63, upward, the thread running straight through the needle
longitudinally thereof, as best shown in Figs. 7, and S. As the head, 34, nears
the limit of its forward movement, its front end strikes the stop, 70, moving the
slide-bar, 69, forward, the incline, 73, engaging beneath the off-set, 65, and
further raising the slide, 63, and holding it in this elevated position, as shown in
Fig. 7. It will now be seen that, if the slide, 63, has been pulled so far down-
ward as to draw down more than the proper length of thread, the forward move-
ment of the needle will not operate to raise the slide high enough to permit the
wedge, 72, to pass beneath the off-set, 65. After engaging the stop, 70, the
head, 34, will next engage the end, 94, of tappet, 87, thereby moving the bar, 84,
toward the right. In this movement of bar, 7, the engagement of pin, 86, in the
slot, 83, of bell-crank lever, 80, will operate to turn said lever toward the right
on its pivot, 79, and thereby move the lever-arm 78, outward, or toward the
operator, which movement of lever-arm, 78, operates to turn downward the
cutter, 77, and release the free end of the thread which had previously been held
clamped in the cutting mechanism, as shown in Fig. 1, this position of the parts
being indicated in Figs. 4, and 7. In clamping the bag in the jaws, 17, and 19,
the corners of the bag are so disposed as that the needle shall not engage them.
The purpose of this is to leave sufficient material to form the usual ears at the
corners of the sack, as shown at 96, 97, in Figs. 7, and 10. By referring to
Fig. 7, it will be seen that the point and one of the spirals or convolutions of the
needle projects through the sack on the side toward the operator, and that the
thread, 50, which runs centrally through the needle, forms with this part of the
needle an eye or opening. In order to form the ear, 96, and secure the same
with the thread, the handle, 28, is now moved in a direction away from the
operator which will cause the curved arm, 29, to project outward through the
opening, 30, in the support, 10, and to push the corner or car, 96, of the sack
through the eye or opening formed by the thread, 50, and the needle, as clearly
shown in Fig. 8. The handle, 28, is next moved to withdraw the curved arm, 29,
to its normal position, or that shown in Fig. 3. The crank, 45, is now turned
in the reverse direction to that first described to withdraw the needle from the
sack. In this movement, the thread will first be drawn tightly about the ear, 96,
as shown in Fig. 10, and, as the needle continues to be withdrawn, the thread is
pulled through the groove, 48, being left in the sack to occupy practically the
same position formerly occupied by the needle, except that it is pulled down
close about the edge of the sack by the friction of the thread passing through
the groove in the needle, lying adjacent to the thread which was carried through
the sack in the progress of the needle therethrough as previously described. The
slack of the thread that was wound in the spirals of the needle is taken up by the
slide, 53, having the roller, 58, engaging the thread, which slide is gradually
drawn backward toward the rear of frame, 51, by the weight, 56. The needle, 46,
is in line with the cutting mechanism, 61, but is curved in a spiral of such
diameter that it will revolve about this mechanism. The relative arrangement
of these parts is such that, as the needle is withdrawn from the sack, the thread
of the needle will be carried by the revolution of the needle between the cutter, 77,
(which is still in the position shown in Figs. 4, and 7.) and the plates, 74, and 75.
The head, 34, as it nears the limit of its return movement, will first strike the
end, 95, of tappet, 88, which, through the mechanism described, will operate to

page_text: raise the cutter, 77, securing the string on the side next the bag and wedging
the end of the string leading from the needle between the cutter, 77, and plate 75.
In Fig. 9, the position of the parts at this period of the operation is shown. By
referring to this fig., it will be seen that the slide, 63, is supported by the
wedge, 72, and that the roller, 66, lies directly over the thread, 50°. Imme-
diately after striking the end, 95, of tappet, 88, to operate the cutter, the head, 34,
will strike the stop, 71, moving slide-bar, 69, backward, and withdrawing
wedge, 72, from beneath the off-set, 65. The slide, 63, will now fall a short distance,
the roller, 66, resting on the thread. By drawing slide, 63, down to the adjusting-
nut, 67, the requisite amount of thread is measured off for the next passage
of the needle, and the slide, 53, is drawn toward the front of frame, 51, raising
the weight, 56. The free ends of the cord are tied by hand about the other corner
of the bag to form the ear, 97. By manipulating handle, 8, the carrier is moved
to discharge the bag from the platform, or to move the bag along a given distance,
so that a second operator may form the car, 97. In practice, three bags are on
the platform at one time, viz.: one that is on the receiving end of the platform,
one that is being sewed and one that is ready to be discharged.
We have shown and described a machine that is operated manually, but we
contemplate running the machine by power derived from an engine, dynamo, or
the like.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is: -
عد
1. In a machine for sewing up the mouths of sacks, the combination with means
for clamping the sack, of a spiral needle carrying a thread, means for imparting
a forward screw-motion to the needle to carry the same through the sack, and a
backward screw-motion to the needle to withdraw it from the sack, means for
preventing the thread from being withdrawn with the needle, and means operat-
ing in the backward movement of the needle to cut the thread between the needle
and the sack, substantially as described.
2. In a machine for sewing up the mouths of sacks, the combination with
means for clamping the sack, of a spiral needle carrying a thread, means for
imparting a forward screw-motion to the needle to carry the same through
the sack, and a backward screw-motion to the needle to withdraw the
needle from the sack, means for preventing the thread from being withdrawn
with the needle, and means operating in the backward movement of the needle
to cut the thread between the needle and the sack and to hold the end of the
thread leading from the needle, substantially as described.
3. In a machine for sewing up the mouths of sacks, the combination with
means for clamping the sack comprising a stationary and a movable jaw afford-
ing between them a guide of a spiral needle carrying a thread, means for impart-
ing a forward screw-motion to the needle through said guide to carry the said
needle through the sack and a backward screw-motion to the needle to withdraw
the needle from the sack, means for preventing the thread from being with-
drawn with the needle, and means operating in the backward movement of the
needle to cut the thread between the needle and the sack, substantially as
described.
4. In a machine for sewing up the mouths of sacks, the combination with
means for clamping the sack, of a spiral needle having an eye and provided
with a circumferential groove, a bobbin carrying thread for the needle, said
thread being paassed through the eye of the needle and having its end secured,
means for imparting a forward and a backward screw-motion to the needle
whereby on the forward movement the thread will be drawn from the bobbin
and will seat in the groove of the needle and be carried thereby through the
sack, while the portion of thread that has been passed through the eye will be
drawn through the sack by the needle and extend longitudinally through the

page_text: spirals of the needle, and means for pushing the corner of the sack between this
part of the thread and the needle when the needle has reached the end of its
forward movement whereby on the backward movement of the needle the
thread will be drawn through the groove of the needle and be pulled tightly
about said corner to form an ear, substantially as described.
5. In a machine for sewing up the mouths of sacks, the combination with
means for clamping the sack, of a spiral needle carrying a thread, means for
imparting a forward and a backward screw-motion to the needle to first carry
the same through the sack and then withdraw the needle from the sack, and
means for pushing the corner of the sack between the thread and the needle
when the latter has reached the end of its forward movement, whereby as the
needle is withdrawn the thread will be pulled tightly about said corner to form
an ear, substantially as described.
6. In a machine for sewing up the mouths of sacks, the combination with
means for clamping the sack, of a spiral needle carrying a thread, means for
imparting a forward and a backward screw-motion to the needle to first carry
the same through the sack and then withdraw the needle from the sack, means
for pushing the corner of the sack between the thread and the needle when the
latter has reached the end of its forward movement, whereby as the needle is
withdrawn the thread will be pulled tightly about said corner to form an
ear, and means operating in said backward movement of the needle to sever the
thread between the sack and the needle, substantially as described.
7. In a machine for sewing up the mouths of sacks, the combination with
means for clamping the sack, of a spiral needle having an eye and a circum-
ferential groove, a bobbin having thread wound thereon, said thread being
passed through the eye of the needle, means for imparting a forward screw-
motion to the needle to carry the same through the sack and a backward screw-
motion to the needle to withdraw the needle from the sack, means for prevent-
ing the thread from being withdrawn with the needle, cutting mechanism
operated in the backward movement of the needle to cut the thread between the
needle and the sack and to hold the end of the thread leading from the needle,
means for engaging the thread between the cutting mechanism and the needle
whereby a given length of thread is drawn through the eye of the needle, and
means for adjusting the length of thread so drawn through the needle, sub-
stantially as described.
8. In a machine for sewing up the mouths of sacks, the combination with
means for clamping the sack, of a spiral needle having an eye and a circum-
ferential groove, a bobbin having thread wound thereon, said thread being
passed through the eye of the needle, means for imparting a forward screw-
motion to the needle to carry the same through the sack and a backward screw-
motion to the needle to withdraw the needle from the sack, means for preventing
the thread from being withdrawn with the needle, cutting mechanism operated
in the backward movement of the needle to cut the thread between the needle
and the sack and to hold the end of the thread leading from the needle, and a
combined tension and take-up device engaging the thread leading from the
bobbin to the needle, substantially as described.
9. In a machine for sewing up the mouths of sacks, the combination with
means for clamping the sack, of a spiral-needle having an eye and a circum-
ferential groove, a bobbin having thread wound thereon, said thread being
passed through the eye of the needle, means for imparting a forward screw-
motion to the needle to carry the same through the sack and a backward screw-
motion to the needle to withdraw the same from the sack, means for prevent-
ing the thread from being withdrawn with the needle, cutting mechanisin
operated in the backward movement of the needle to cut the thread between the
needle and the sack and to hold the end of the thread leading from the needle,
a combined tension and take-up device engaging the thread leading from the
bobbin to the needle, a vertical bar having a lower screw-threaded end, a slide

page_text: mounted on said bar carrying a roller for engaging the thread between the
cutting mechanism and the needle, whereby by pulling said slide downward the
thread may be pulled through the eye of the needle, and an adjusting nut on
the lower end of said rod for limiting the downward movement of said slide,
substantially as described.
10. In a machine for sewing up the mouths of sacks, the combination with
means for clamping the sack, of a guide provided with notches, a square spindle
revolubly mounted in said guide, means for revolving said spindle, a head
slidably mounted on said spindle and having a circumferential spiral rib or
thread engaging in said notches, and a spiral needle carried by said head and
having an eye and a circumferential groove, substantially as described.
11. In a machine of the class described, the combination with the device for
clamping the sack, of the spiral needle having an eye, and of the means for
causing said needle to travel back and forth, of cutting mechanism, a slide
adapted to be suspended on a length of thread passed through the eye of the
needle, the said cutting mechanism also having means to engage said thread
whereby in the passage forward of the needle the slide will be carried upward
by said thread, means operated in the forward movement of the needle to engage
said slide and hold it in an elevated position, means for operating said cutting
mechanism in the forward travel of the needle after the slide has been elevated,
and means operating in the backward travel of the needle to first operate the
cutter and after that to release the slide, substantially as described.
Dated this First day of December 1908
DAY, DAVIES & HUNT,
Chartered Patent Agents, 321, High Holbon, London, W.C.,
Agents for the Applicants.