A Welt Attaching Machine.
Year: 1893

page_text: Date of Application, 30th Mar., 1893
Complete Specification Left,. 1st Jan., 1894-Accepted, 3rd Feb., 1894
PROVISIONAL SPECIFICATION.
A Welt Attaching Machine.
I, GEORGE FREDERICK REDFERN, of the Firm of G. F. Redfern & Co., The
General Patent Office, No. 4, South Street, Finsbury, in the County of London,
Patent Agents, do hereby declare the nature of this invention (a communication to
me by Hermann Carl Gros, of Oberursel, near Frankfort-on-the-Main, Germany,
Engineer) to be as follows:-
This invention relates to a machine for connecting the welts of boots and shoes
with the insole and the upper by means of wire, that is to say, in place of waxed
thread hitherto usually employed I employ metal wire, preferably brass.
In carrying out the invention the wire is led to the machine from a spool or other
supply and is taken by a wire carrier. An awl or perforator on a suitable carrier
punctures a hole into the material into which the wire is inserted and then cut to
suitable length so that the wire projects at each side of the material. The projecting
ends are then bent and pressed firmly against the material so that by repeating the
action of the machine a row of fastenings or clamps is formed taking the place of
the former seam of the waxed thread.
The welt machine is constructed of a support or frame carrying a pair of columns.
in which is journalled a shaft upon which are fastened cams or eccentric discs for
imparting motion to the various levers and parts of the machine.
An awl carrier is journalled in the well known way on a shaft so that it can turn
but not move laterally on such shaft. The swing or oscillation is received from a
toothed segment lever actuated by an eccentric or disc and at the same time this
carrier partakes of the horizontal oscillation or sliding reciprocating movement
imparted in a well known way to the shaft by a suitable lever. The awl is secured
to the awl-carrier and in its forward stroke it perforates the material to be united,
namely, the insole, the upper and the welt and then by a lateral movement the said
awl or perforator feeds the material the length of a stitch. The metal wire is
engaged by three adjustable guide-rollers so as to receive the bend corresponding to
the circle of the curved awl and the said wire is then engaged by the wire-carrier
which may form the left hand journal or support for the shaft and is so journalled
in the frame or support that it can swing but cannot move laterally.
Its swing is received from a toothed segment lever and cam. A cutting apparatus
described hereafter is connected to the wire-carrier so as to partake its backward
and forward movements. If the wire-carrier is back or in its rear portion away
from the work, the wire is led into proper position in the same and held at the
proper place with the knife of the cutting arrangement which at first exerts a slight
pressure so as to hold the wire but not cutting the same before the proper moment
has arrived. At the same time that the awl makes its back stroke or moves away
from the work the wire-carrier moves forward or toward the work and inserts the
wire through the hole formed there by the awl. The stroke of the wire-carrier is
so adjusted that the wire penetrates the material and projects a suitable distance at
the other side. When the wire-carrier has ended its forward stroke the cutter
severs the wire so as to leave the cut portion projecting from the near side of the
material a distance corresponding to the projection of the wire on the other side of
the material. The wire-carrier then returns but without carrying back the wire, the
latter remaining in the position occupied at the moment of cutting.
The cutting device consists of a knife or blade secured to a lever fulcrummed on a
stud on the wire-carrier. The lever has a roller actuated by a segment secured in a slide

page_text: connected with a lever actuated by a cam. By the action of the segment or roller
the lever is actuated to press the knife on the wire in the wire-carrier and while the
roller with the wire-carrier passes a certain distance on the inner side of the segment
this pressure of the knife is such as to firmly hold the wire during the forward stroke.
At the point directly in advance of the end of the stroke of the wire-carrier is a nose
which on the further or final advance of the wire-carrier exerts increased pressure
on the roller, the lever and the knife, whereby the edge of the knife cuts the wire.
The cutting is done diagonally to the direction of length of the wire so that the ends
of the cut portion are pointed. When the wire is cut the segment on the slide is
raised by its lever and cam and the knife lever and knife are pressed back by a
spring so that the knife on the back stroke of the wire-carrier will not act upon
the wire.
After the return stroke the segment again presses lightly on the roller whereby
the knife again takes hold of the wire and the operation is repeated.
The wire having been brought into position inner and outer presser feet come
against opposite sides of the material to compress the same directly in front of the
wire piece at the spot where the latter is to be bent. The inner presser foot is
provided with a downwardly projecting point and is merely moved up and down.
It is secured to a slide having at its upper end a roller engaged by a forked end of
a lever actuated by a cam. The point of the inner presser foot descends and enters
from above into the channel of the inner sole directly after the awl has ended
its feed.
The outer presser foot has a fourfold motion, 1st diagonally upward or pendulum
like in the direction of position of the welt, 2nd vertically upward, 3rd diagonally
backward (pendulum like) 4th vertically downwards against the welt. These move-
ments are effected as follows:-The outer presser foot is secured to a lever
fulcrummed in the upper part of a slide. Below the fulcrum extends a lever
having a roller pressed by a spring against a disc. This lever under the action of
the disc effects the up and down motion of the slide and of the lever carrying the
outer presser foot. A roller on this lever runs in a cam-groove of the disc whereby
the diagonal or pendulum like movements of the lever and of the outer presser foot
are effected. As soon as the inner presser foot is in the above last mentioned
position, the outer presser foot moves on the other side vertically downwards
against the material and rests with a certain pressure upon the latter, that is to say,
upon the outer side of the welt. The end of the outer presser foot resting on the
material or welt has the form of an acute triangle, the acute angle of which points
towards the piece of wire.
When in this position two other instruments come into operation, namely, the
benders and pressers which taken together form a sort of pliers.
Each cheek of this so called pliers receives a fourfold motion, riz. -1st in a
horizontal direction along in the direction of the joint or seam, 2nd forward from
inside and outside against the material, 3rd backwards away from the inner and
outer edge of the material, 4th in a horizontal direction back opposite to the first
named direction. The movement of the inner plier cheek differs from that of the
outer in that the former moves at all times in constant position while the outer
cheek is under the influence of a spring and therefore yielding to accommodate
different thicknesses of material.
One of the cheeks is secured to the forward end of a lever which rests on a
somewhat inclined face of the frame and is slotted at about its turning point and
in the slot is fitted a roller carried by a screw forming the fulcrum of the lever.
The other end of the lever consists of two parts, the end proper of the lever and
the end piece or tail, which latter can move or play in a tube or sleeve on the
lever and a spring is interposed between the two parts.
The said tail piece is connected by a ball-joint with a lever having a double
fulcrum or double jointed support and having two rollers, one of which runs in a
cam-groove on a disc while the other runs on the disc and is forced against the
same by a spring. The disc and its cam-groove are so formed as to impart to

page_text: the lever a lateral as also a vertical oscillation, which movements being imparted
to the lever carrying the tube or sleeve cause the lever to move backwards and
forwards as guided by its slot and also to swing or turn about a screw.
The inner plier cheek is secured to a lever having a double fulcrum or double
jointed support and having two rollers actuated by a disc in a similar manner to
that in which the disc actuates the rollers of the lever of the tail piece. The
lever of the inner cheek receives the same kind of motion as just described,
riz.,-laterally back and forth as also back and forth in a vertical direction.
The plier cheeks move horizontally in a direction toward the wire fastening last
formed whereby the wire piece is bent about the inner and outer presser feet close
to the inner and outer edges of the material.
The outer plier cheek consists of two parts being provided with a finger movable
in the longitudinal direction and moved by a spring forward or toward the outer
presser foot. On the advance of the outer plier cheek a finger recedes somewhat
in pressin the wire piece against a suitable formed presser foot and when passed
the edge of the presser foot the finger will advance under the pressure of the spring
to bend over the outer point of the wire piece which thereafter enters the material
to form a hook or holder. The wire being thus bent the point of the presser foot
by reason of the pendulum like or oscillating motion of its lever now moves
diagonally upwards, away from under the outer check and out of the wire loop or
hook formed about the presser foot. The lever then moves forward or toward
the work whereby the outer end of the hook or clamp is pressed toward or rather
into the material and against the inner cheek and the inner presser foot so that
also the inner bent end of the wire piece is pressed into the inner edge of the
channel of the insole.
The outer cheek is so connected to the lever as to be adjustable but in consequence
of the spring between the lever and the tail piece the pressure of the lever on the
outer cheek is not positive so that the said cheek can yield automatically to
inequalities in the thickness of the material.
After the wire ends have been pressed in, the cheeks make a return stroke or
move away from the material and move horizontally at proper moments, the point
of the inner presser foot is moved out of the channel in the insole and the operation
for forming a new stitch is repeated.
Dated this 30th day of March 1202
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
A Welt Attaching Machine.
I, GEORGE FREDERICK REDFERN, of the firm of G. F. Redfern & Co., The
General Patent Office, No. 4, South Street, Finsbury, in the County of London,
Patent Agents, do hereby declare the nature of this invention (a communication to
me by Hermann Carl Gros, of Oberursel, near Frankfort-on-the-Main, Germany,
Engineer) 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 a machine for connecting the welts of boots and shoes
with the insole and the upper by means of wire, that is to say, in place of waxed
thread hitherto usually employed I employ metal wire, preferably brass.
In carrying out the invention the wire is led to the machine from a spool or other
supply and is taken by a wire carrier. An awl or perforator on a suitable carrier
punctures a hole into the material into which the wire is inserted and then cut to
suitable length so that the wire projects at each side of the material. The pro-
jecting ends are then bent and pressed firmly against the material so that by

page_text: 4
une prace OF THE FOL
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To enable the invention to be fully understood I will describe how it can be
carried into practice by reference to the accompanying drawings, in which :-
Figure 1 is a front elevation of a welt attaching machine constructed according
to this invention.
Figure 2 is a sectional elevation of the same the section being taken on the
line 2-2 of Figure 1.
Figure 3 is a side elevation looking in the direction of the arrow, Figure 1, one
of the columns of the machine being broken away for the sake of clearness.
Figure 4 is a sectional plan of the machine with the hereinafter described cam-disc
removed.
Figures 5 and 6 are detached sectional elevations of a part of the machine
illustrating the attachment of a welt by the wire fastenings or clamps.
Figures 7, 8 and 9 are views of details drawn to an enlarged scale.
Figure 7 being a section of the carriers.
Figure 8 a side elevation of one of the carriers, and,
Figure 9 an edge view of the same.
The welt machine is constructed of a support or frame a carrying a pair of
columns b, b in which is journalled a shaft c upon which are fastened cams or
eccentric discs d, e, f, g for imparting motion to the various levers and parts of the
machine.
is the awl-carrier journalled in the well known way on a shaft i so that it can
turn but not move laterally on such shaft. The swing or oscillation is received
from a toothed segment lever j actuated by the cam or eccentric disc fand at the
same time this carrier partakes of the horizontal oscillation or sliding reciprocating
movement imparted in a well known way to the shaft i by a lever 1. The awl m is
'secured to the awl-carrier h and in its forward stroke, as shewn in Figure 3, it
'perforates the material to be united, namely, the insole n, the upper o and the welt p
and then by a lateral movement the said awl or perforator feeds the material the
length of a stitch.
In the drawing the feed is supposed to take place towards the left of the spectator
looking at Figure 1.
The metal wire 9 passes between three adjustable guide-rollers r, r, r, Figures 2
and 3, so as to receive the bend corresponding to the circle of the curved awl m
and the said wire is then engaged by the wire-carriers which forms the left hand
journal or support for the shaft i, as shewn in Figure 7, and is so journalled in the
frame or support a that it can swing but cannot move laterally.
Its swing is received from a toothed segment lever and the cam e. A cutting
apparatus described hereafter is connected to the wire-carrier so as to partake of
its backward and forward movements. If the wire-carrier is back or in its rear
portion away from the work, the wire is led into proper position in the same and
held at the proper place with the knife of the cutting arrangement which at first
exerts a slight pressure so as to hold the wire but not cutting the same before the
proper moment has arrived. At the same time that the awl m makes its back
stroke or moves away from the work the wire-carrier s moves forward or toward
the work and inserts the wire g through the hole formed there by the awl. The
stroke of the wire-carrier s is so adjusted that the wire penetrates the material and
projects a suitable distance at the other side. When the wire-carrier has ended
its forward stroke the cutter u severs the wire g so as to leave the cut portion
projecting from the near side of the material a distance corresponding to the
projection of the wire on the other side of the material as shown in Figure 5. The
wire-carrier s then returns but without carrying back the wire, the latter remaining
in the position occupied at the moment of cutting.
The cutting device consists of the knife or blade u which is secured to a lever v
fulcrummed on a stud w on the wire-carrier s. The lever has a roller x actuated
by a segmenty secured in a slide = connected with a lever a actuated by the

page_text: cat e. by the action of the segment y on the roller x the lever is actuated to
press the knife u on the wire in the wire-carriers and while the roller with the
wire-carrier passes from 6 to c¹, Figure 8 on the inner side of the segment y this
pressure of the knife is such as to firmly hold the wire during the forward stroke.
At the point c¹ directly in advance of the end of the stroke of the wire-carriers is
a nose on the segment y which on the further or final advance of the wire-carrier
exerts increased pressure on the roller a, the lever and the knife u, whereby the
edge of the knife cuts the wire. The cutting is done diagonally to the direction of
the length of the wire so that the ends of the cut portion are pointed. When the
wire is cut the segment y on the slide z is raised by the lever a¹ and came and the
knife lever vand knife u are pressed back by a spring d¹ so that the knife on
the back stroke of the wire-carrier will not act upon the wire.
After the return stroke the segment y again presses lightly on the roller r
whereby the knife u again takes hold of the wire and the operation is repeated.
While the wire q is brought into the position shewn in Figure 5 inner and outer
presser feet e¹, f¹, come against opposite sides of the material to compress the same
directly in front of the wire piece at the spot where the latter is to be bent. The
inner presser foot e' is provided with a downwardly projecting point and is merely
moved up and down. It is secured to a slide g', Figures 3 and 4, having at its
upper end a roller engaged by a forked end of a lever i actuated by the cam g.
The point of the inner presser foot e' descends and enters from above into the
channel of the inner sole directly after the awl bas ended its feed.
The outer presser foot fl has a fourfold motion, 1st diagonally upward or
pendulum like in the direction of the position of the welt, 2nd vertically upward,
3rd diagonally backward (pendulum like) and 4th vertically downwards against
the welt. These movements are effected as follows:-The outer presser foot fis
secured to a lever fulcrummed in the upper part of a slide k'. Below the fulcrum
extends a lever having a roller pressed by a spring ml, Figure 2 against the
disc d. This lever under the action of the disc d effects the up and down motion
of the slide k' and of the lever i carrying the outer presser foot f¹. A roller on
this lever runs in a cam-groove of the disc d whereby the diagonal or pendulum
like movements of the lever j¹ and of the outer presser foot fare effected. As
soon as the inner presser foot e' is in the above last mentioned position, the outer
presser foot moves on the other side vertically downwards against the material
and rests with a certain pressure upon the latter, that is to say, upon the outer side
of the welt. The end of the outer presser foot resting on the material or welt has
(as shewn in Figure 5) the form of an acute triangle, the acute angle of which
points towards the piece of wire q.
When in this position (Figure 5) two other instruments come into operation,
-namely, the benders and pressers n', o' which taken together form a kind of
pliers.
Each cheek of these so called pliers receives a fourfold motion, viz.:-1st in a
horizontal direction along in the direction of the joint or seam, 2nd forward from
inside and outside against the material, 3rd backwards away from the inner and
outer edge of the material, and 4th in a horizontal direction back opposite to the
first named direction.
The movement of the inner plier cheek differs from that of the outer in that
the former moves at all times in constant position while the outer cheek is under
the influence of a spring and therefore yields to accommodate different thicknesses
of material.
The cheek o' is secured to the forward end of a lever p' which rests on a some-
what inclined face of the frame and is slotted at about its turning point and in the
slot is fitted a roller q', Figure 2, carried by a screw r forming the fulcrum of
the lever p'. The other end of the lever p' consists of two parts, the end proper
of the lever p and the end piece or tail s', which latter can move or play in a tube
or sleeve on the lever p' and a spring t' is interposed between the two parts pl, s.
The tail pieces is connected by a ball-joint with a lever u! having a double

page_text: fulcrum or double jointed support and having two rollers w¹ and ¹ one of which
runs in a cam-groove on the disc e while the other runs on the disce and is forced
against the same by a spring y¹. The disc e and its cam-groove are so formed as
to impart to the lever u¹ a lateral as also a vertical oscillation, which movements
being imparted to the lever p' cause the latter lever to move backwards and
forwards as guided by its slot and also to swing or turn about the screw r.
The inner plier cheek n' is secured to a lever a Figures 1 and 3 having a double
fulcrum or double jointed support a² and having two rollers b, c actuated by the
disc in a similar manner to that in which the disc e actuates the rollers w' and
of the lever u. The lever receives the same kind of motion as just described,
viz. laterally back and forth as also back and forth in a vertical direction.
Referring to the position of the parts illustrated in Figure 5 the plier cheeks n'o¹
move horizontally in a direction toward the wire fastening last formed whereby the
wire piece is bent about the inner and outer presser feet e¹, f' close to the inner
and outer edges of the material.
The outer plier cheek o¹ consists of two parts being provided with a finger d',
Figures 4, 5 and 6 movable in the longitudinal direction and moved by a spring
forward or toward the outer presser foot f. On the advance of the outer plier
cheek o¹ the finger 2 recedes somewhat in pressing the wire piece against the
presser foot f which is suitably formed and when it has passed the edge of the
presser foot the finger will advance under the pressure of the spring to bend
over the outer point of the wire piece which thereafter enters the material to form
a hook or holder. The wire is thus bent into the shape shewn in Figure 6 and the
point of the presser foot f¹ by reason of the pendulum like or oscillating motion of
its lever now moves diagonally upwards, away from under the outer cheek o' and
out of the wire loop or hook formed about the presser foot f¹. The lever p' then
moves forward or toward the work whereby the outer end of the hook or clamp is
pressed toward or rather into the material and against the inner cheek n' and the
inner presser foot el so that also the inner bent end of the wire piece is pressed into
the inner edge of the channel of the insole.
The outer cheek is so connected to the lever pl as to be adjustable but in
consequence of the spring t' between the lever pl and the tail piece s¹ the pressure
of the lever u' on the outer cheek o' is not positive so that the said cheek o' can
yield automatically to inequalities in the thickness of the material.
After the wire ends have been pressed in, the cheeks n', o' make a return stroke
or move away from the material and move horizontally at proper moments, the
point of the inner presser foot el is moved out of the channel in the insole and the
operation for forming a new stitch is repeated.
Having now particularly described and ascertained the nature of my said inven-
tion and in what mauner the same is to be performed, I declare that what I
claim is :-
1. In a welt attaching machine, the combination with an awl or perforator of
a wire carrier adapted to insert the wire into the perforation made by the awl and
actuating mechanism all substantially as hereinbefore described.
2. In a welt attaching machine the combination with an awl or perforator of a
wire carrier located opposite to the awl and adapted to insert the wire into the
perforations made by the awl and actuating mechanism, substantially as hereinbefore
described.
3. In a welt attaching machine the combination with an awl or perforator of a
wire carriers and a guiding and curving mechanism r, r, substantially as
described, for imparting to the wire the proper bend for the insertion thereof in the
perforations.
4. In a welt attaching machine the combination with an awl or perforator of a
wire carriers provided with a cutter for severing the wire into proper lengths,
substantially as hereinbefore described.
5. In a welt attaching machine the combination with an awl or perforator and a

page_text: 0
wire carriers provided with a knife u and knife lever of a segment y for actuating
the lever, a slide for the segment and an actuating lever a¹ for the slide,
substantially as hereinbefore described.
6. In a welt attaching machine the combination with mechanism for inserting
wire pieces into the parts to be united of the plier cheeks n', o' for bending the
inserted wire and actuating mechanism for the said plier cheeks, substantially as
hereinbefore described.
7. In a welt attaching machine the combination with the mechanism for inserting
wire pieces into the parts to be united of the plier cheeks n', o' actuating mechanism
for the cheek n' and an actuating lever for the cheek o' the said lever being
composed of two spring interposed parts or sections p', s', an actuating lever u¹ for
the lever pl, s' and a ball joint for connecting the said two levers, substantially as
hereinbefore described.
8. In a welt attaching machine the combination with the mechanism for inserting
wire pieces into the parts to be united of the plier cheeks n', o' for bending the wire
and actuating mechanism for the said plier cheeks, the cheek o' being provided with
a finger d', substantially as herein before described.
9. In a welt attaching machine the combination with the mechanism for inserting
wire pieces into the parts to be united of a presser foot e¹ and plier cheek n' for
bending a wire end, substantially as herein before described.
10. In a welt attaching machine the combination with the mechanism for
inserting wire pieces into the parts to be united of a presser foot and plier
cheek of for bending a wire end, substantially as hereinbefore described.
11. In a welt attaching machine the combination with the mechanism for
inserting wire pieces into the parts to be united of presser feet e, f and plier
cheeks n', o' for bending the wire, substantially as hereinbefore described.
12. In a welt attaching machine the combination with the mechanism for
inserting wire pieces, of the presser feet e¹, f' actuating mechanism for the presser
foot e and an actuating lever j for the presser foot the said lever having a
movable fulcrum and a lever l' for actuating the fulcrum, substantially as
described.
13. In a welt attaching machine the combination with the mechanism, for
inserting wire pieces, of presser feet e¹, f' a slide g' and lever for actuating one of
the presser feet and a movable fulcrummed lever for actuating the other presser
foot, substantially as herein before described.
14. In a welt attaching machine the combination with the mechanism for
inserting wire pieces, of plier cheeks n', o' and actuating levers for the said cheeks,
each of the said levers having a double jointed fulcrum so as to be capable of
compound motion, substantially as hereinbefore described.
15. The improved welt attaching machine herein before described and illustrated
in the accompanying drawings.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.