Improvements in Means or Apparatus for the Manufacture of Welts for Boots and Shoes.
Year: 1893

page_text: COMPLETE SPECIFICATION.
Improvements in Means or Apparatus for the Manufacture of Welts
for Boots and Shoes.
A communication by ZACHARY TAYLOR FRENCH, of 10, Wabon Street, Boston, in
the State of Massachusetts, one of the United States of America, and
WILLIAM CRISTIAN MEYER, of Forest Hill Street, Boston aforesaid, both
Machinists.
I ALFRED GEORGE BROOKES of 55 & 56 Chancery Lane in the County of
London, Chartered Patent Agent 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 has for its object the production of a novel machine for making a
welt to be used in the manufacture of boots and shoes.
The improved machine contains a pair of feeding rolls between which may be
passed one edge of a side of leather to have cut from it a welt strip, the knife used
for such purpose being held below the work support.
Immediately after this a splitting knife acts on the strip and splits it to uniform
thickness, the leather removed being taken from the underside of the strip.
The end of the strip is lifted or directed upwardly by a shoe or lifter and is led
through a guide between the upper feed roll and a holding roll where what was the
underside of the strip is grooved by a grooving knife and one edge is skived or
chamfered by a skiving knife, the grooving and skiving knives being held
operatively above the work-support by means entirely independent of the means or
devices holding the slitting or splitting knives.
Fig. 1 shows a top or plan view of the welt making machine.
Fig. 2 an enlarged detail of the skiving knife and its holder detached.
Fig. 3 shows a detail of the frame for holding the slitting and splitting knives.
Fig. 4 shows a front end elevation of the welt making machine.
Fig. 5, an enlarged detail of the frame carrying the groover and the welt lifter.
Fig. 6 a detail of the parts shown separately in Figs. 2 and 5, in connection with
the upper feed roll, and
Fig. 7 shows a section of the completed weft.
I will now briefly describe the machine shown in Figs. 1 to 6 inclusive.
The frame work A has a suitable bearing A', shown partially broken out in
Fig. 1, for the reception of the main shaft A, provided with suitable fast and loose
pulleys A, A, the forward end of said shaft having fixed to it by suitable nut A'
the feed wheel A having an annular groove A7 in which enters the end of the
slitting knife As, or the knife that cuts the welt from the side of the leather, the
edge of the side from which the welt is cut running against a suitable edge
gauge A located above the supporting surface A10 or bed on which the side rests.
The shaft A has a gear B which engages a gear B' on a shaft B' mounted in a
yoke or lever B³ pivotted on a stud B and normally held up by a spring B
surrounding a rod B, said spring being adjustable as to its strength by a nut B',
the said shaft having suitably secured to it at its front end a roll B, it having an
annular groove in which lies the knife A³.
The bearing or upper part A' of the frame-work has secured to it by set
screws a, a stand a' suitably grooved to receive the skiving knife a' held clamped
in adjusted position by a suitable bolt a³, the knife being held or presented at a
suitable angle to the edge of the welt to bevel or skive one edge thereof, as at w¹,
see Fig. 7.
The frame work has a lug or ear 6 to which is jointed a rod b¹ extended through
an ear b³ of a yoke or frame b³ pivotted also on the stud B*, said rod having a

page_text: suitable adjustable collar to limit the approach of the yoke or frame 6 towards the
main shaft A, the spring 6 on said rod and adjustable by nut & determining the force
by which the holding wheel d on the shaft mounted on yoke 63 is held toward
the wheel A'.
Shaft d¹ has at its inner end a gear d' engaged and rotated by gear B on the
main shaft.
The yoke 6 has attached to it by a set screw d' a stand d to which is secured
by set screw d³ a forked plate d' of the shape outlined in Fig. 4 by dotted lines,
said plate entering the annular groove Z in the wheel d.
The frame-work has also fixed to it by screw e, a block e¹ shewn best in Fig. 6,
said frame receiving a stud e², on which is confined as by set screw the grooving
knife or groover e to cut into the welt w, see Fig. 7, the groove e³.
The stude is held in adjusted position in suitable manner, as by a set
screw. e*:
i
The block has attached to it the lifter or shoe f, curved as at f¹ to substan-
tially fit the periphery of the wheel A as shewn in Fig. 4, the said lifter having
a part of its inner or concaved face cut away to constitute a guideway or leave a
guide space f for the reception and guidance of the welt turned up by the lifter,
so that said welt may pass between the wheels d and A, the groover contacting
with and grooving the welt as stated, the grooving and skiving being at about the
same time.
The grooved and skived welt will be delivered from above the wheels d and A*
onto a suitable receiver, shown as a shelf g, the shelf being represented by full
lines Fig. 1 and by dotted lines Fig. 4.
The slitting knife is adjustably held by a block and screws to the lower
end of a knife carrier mounted on the stud B and confined to the framework by
a set screw h³.
The upper end of the knife carrier is suitably grooved to thereby adapt it for
the reception, in an adjustable manner, of the splitting knife which is held in
adjusted position by a clamp screw, the knife splitting to uniform thickness
the welt severed from the side of leather by the splitting knife As.
The knife carrier may be adjusted when clamp screw h³ is loosened by rotating
the adjusting screw m.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim :-
:.
1. The use in a welt making machine, of feed wheels between which the side of
leather is passed, a slitting knife to cut a welt strip therefrom, and skiving
knife to skive the edge of the welt strip, a holding wheel co-operating with one of
the feeding wheels, and a lifter and guide to turn the welt as cut from the side
between the holding wheel and one of the feeding wheels.
2. The use in a welt making machine, of feed wheels between which the side
of leather is passed, a slitting knife to cut a welt strip therefrom, a holding
wheel co-operating with one of the feed wheels, and a lifter and guide to turn
the welt between the holding wheel and one of the feeding wheels as it is cut
from the side, a skiving knife supported above the lower feed wheel to skive the
edge of the welt strip and a grooving knife to groove the welt on its passage
between the upper feed wheel and holding wheel.
3. The use in a welt making machine, of feed wheels and a holding wheel
co-operating therewith, a splitting knife and its carrier, and an edge skiving knife
and its holder.
4. The use in a welt making machine, of feed wheels between which the side of
leather is passed, and a holding wheel co-operating with one of the feed wheels,
the splitting knife to split the welt strip to uniform thickness, a groover and a
welt lifter to lift the strip between the holding wheel and upper feed wheel.
5. The use in a welt making machine, of feed wheels between which the side of

page_text: leather is passed, a slitting knife to cut a welt strip therefrom, a holding wheel
co-operating with the feed wheels, a lifter and guide to turn away the welt as
cut from the side, a skiving knife supported above the lower feed wheel to skive.
the edge of the welt, and a receiver for the welt as it emerges from between the
holding and upper feed wheels.
6. The use in a welt making machine, of feed wheels pressed toward each other
by a spring, their supports, a work support for the side of leather, and adjustable
knife carrier, a slitting and a splitting knife attached thereto, a holding wheel
co-operating with the feed wheels, a welt lifter and guide, and a skiving, and a
grooving knife, to skive the edge of the welt strip and groove the underside thereof
respectively.
Dated the neth of Contember 1902
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.