Improvements in Tacking Machines for Boots and Shoes.
Year: 1894

page_text: Date of Application, 28th Sept., 1894
Complete Specification Left, 29th June, 1895-Accepted, 3rd Aug., 1895
PROVISIONAL SPECIFICATION.
Improvements in Tacking Machines for Boots and Shoes.
I WILLIAM HENRY DORMAN, of The Hawthorns, Newport Road, Stafford, in
the County of Stafford, Engineor do bereby declare the nature of this invention
to be as follows:-
This invention has for its object improvements in machines used for tacking the
uppers of boots and shoes during the operation of lasting the same and is particularly
applicable to the machine generally known as "The Magnetic Tacker.'
Hitherto this machine has been constructed so that only one length of tack or
nail could he used at one time and as it is desirable that tacks or nails of different
lengths should be available for use in the machine I improve the construction of the
machine by introducing one or more extra cylinders and shoots for feeding the tacks
down to the driver.
Imount the tack feeding cylinders and shoots in a frame which is capable of
being moved across the machine so as to bring any desired shoot into position to
deliver tacks to the driver.
The frame is mounted in a slide or upon balls so that it is free to move and a rack
and pinion are employed by means of which the operator cau traverse the frame
across the machine.
A spring or other locking device may be used to secure the frame in position and
the band which revolves the cylinders is arranged over suitable guide pulleys in
such a way as to permit of the necessary movements of the cylinders.
A hammer or presser may be arranged to strike or press upon the upper so as to
level the pleats therein before the lasting tack is driven and may either be carried
on the driver which drives the tack and be furnished with a yielding spring or may
be worked independently by its own lever, crank and connections or equivalent
means.
Dated this 97th das of Cantamhan 100
Improvements in Tacking Machines for Boots and Shoes.
1, WILLIAM HENRY DORMAN, of The Hawthorns, Newport Road, Stafford,
in the County of Stafford, Engineer 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 improvements in machines used for tacking the
uppers of boots and shoes during the operation of lasting the same and is particularly
applicable to the machine generally known as the Magnetic Tacker.
Hitherto this machine has been constructed so that only one length of tack or nail
could be used at one time and as it is desirable that tacks or nails of different lengths
should be available for use in the machine I improve the construction of the
machine by introducing one or more extra cylinders and shoots,for feeding the tacks
down to the driver.
Imount the tack feeding cylinders and shoots in a frame, which is capable of being

page_text: moved across the machine so us to bring any desired shoot into position to activer
tacks to the driver.
The frame is mounted in a slide or upon balls so that it is free to move and a rack
and pinion are employed by means of which the operator can traverse the frame
across the machine.
A spring or other locking device may be used to secure the frame in position and
the band which revolves the cylinders is arranged over suitable guide pulleys in such
a way as to permit of the necessary movements of the cylinders.
A haminer or presser may be arranged to strike or press upon the upper so as to
level the pleats therein before the lasting tack is driven and may either be carried
on the driver which drives the tack and be furnished with a yielding spring or
may be worked independently by its own lever, crank and connections or equivalent
means.
My invention is illustrated by the accompanying drawings in which
Fig. 1 is a front view of a portion of the machine shewing my improvements.
Fig. 2 is a side view of the same.
Fig. 3 is a plan of the same partly in section.
Fig. 4 is a side view of a machine shewing an arrangement of the hammer for
levelling the pleats in the upper.
Fig. 5 is a side view shewing an alternative arrangement of the hammer.
Referring to the Figures 1 2 and 3 a a' are the tack feeding cylinders and
aa³ the shots down which the tacks are supplied to the driver a'. The lever a' and
the trigger as by which the driver a' is operated and the levers a' a³ which move the
cylinders a a' and the shoots a a³ to and from the driver a' are constructed and
operate in the usual manner except that the levers a a" are bowed outwards
and that the pin a is made of extra length for a purpose to be hereafter explained.
I mount the tack feeding cylinders a a¹ and shoots a² in a frame h which is
capable of being moved across the machine from side to side so as to bring. either
shoot a² or a³ into position to deliver tacks to the driver a*.
so that the
The frame is mounted upon balls b' which are placed in grooves
frame may move easily and an opening is formed in the inachine frame b' to afford
room for the frame 6 and other parts to be moved.
Attached to the frame is a rack c and gearing into it is a pinion c¹ which is
mounted on a shaft carried in bearings in the machine frame and provided
with a handle by which the operator can turn the pinion e' so as to move the
frame b and bring either shoot opposite the driver a*.
To secure the frame b against accidental disturbance a catch d is employed which
enters one of the notches ad formed in the frame being retained therein by a
spring d. This catch d can be released by the operator pressing upon the button dª
formed upon the push piece d' which passes through the: shaft and engages the
catch d.
The band e which rotates the cylinders a a¹ and which is driven from a part of
the machine not shewn is arranged so that the transverse movement of the frame b
can take place without interfering with the driving power of the band e and this is
accomplished by leading the same over the guide pulleys e e e³ carried on the
machine frame so that the cylinder pulleys e emove across as it were in the
bight ee of the band e. The intermediate guide pulley is mounted on a long
pine carried in the frame b on which it slides to accomodate the other movement
of the cylinders imparted in the ordinary way by the levers a' as to and from the
driver a².
The cylinders a al revolve continuously and both partake of the movement
imparted by the levers a² as which as before stated are bowed outwards on each
side and provided with a long pin a'. This construction allows the blocks ff to
slide to and fro upon the pin aº, whenever the cylinders a a' are moved across by
the rack and pinion c, without breaking the connection between the levers a a
and the cylinders a a¹ which connection is made in the ordinary way by the
stems
.c
f

page_text: It is a matter of little consequence whether the cylinders a a' revolve or not when
out of action but it is essential that at such times the gates al a. should.be
inoperative as otherwise tacks would continue to be delivered after the particular
cylinder was removed from the driver a. This is ensured by providing only one
cain piece a for operating the gate levers as a and placing it opposite the driver a¹
so that it is only when a shoot is in communication with the driver at that the gate
lever which belongs to the same shoot comes into engagement with the cam piece als
so as (by the reciprocations of the cylinders a or a' caused in the ordinary way by
the operation of the levers a a) to be operated by it.
Fig. 4 shews a machine having applied to it the hammer. for levelling the pleats
in the upper before the tack is driven.
The machine is constructed and operated in the usual way except that the end of
the driver at stands down a sufficient distance to permit of the hammer g being
placed upon it. The hammer g presents a face g¹ to the work and is tubular
above so that it may slide upon the driver a. It is provided with a slot g² aud
peg g³ to allow of vertical movement and prevent turning and a spring g' to hold
the hammer down also with an opening g' into which the end of the shoot a enters
to allow the magnetized driver at to take the tack. A central hole gº is made in
the face of the hammer through which the driver end a operates.
It operates as follows:-The machine drives down the driver at in the usual way
and the hammer g precedes it being held forward by the tension of the spring 9*.
The hammer g therefore first strikes the work so as to level any pleats in the boot
upper and is immediately followed by the driver a carrying the tack. The springy
yielding as the driver a descends.
Fig. 5 shews an alternative construction as follows:-The parts which operate
the driver a in the ordinary way are duplicated and thus a second driver is
operated which carries a hammer h made to operate just in advance of the
driver a'.
The duplicate parts are arranged as under.
The ordinary driving shaft i revolves in the direction shewn by the arrow and
carries an additional crank pin in advance of the ordinary crank pin which
actuates the ordinary machine. A lever is mounted on the pin and provided
with a slot and die engaging the crank pin. A rod connects this lever
with another lever mounted on the pin and joined by links 10 to a sleeve "
which is free to slide on a vertical bar . The bar is in turn free to slide
vertically in bearings formed in the machine frame and is held up by a
catch pin entering an annular groove i formed in the bar and maintained by
a spring. There are two collars and fast upon the bar 1 and between
each collar and the sleeve is a spiral spring, 20 being the lower and the
upper one. A trigger is mounted on a pin 23 in the frame and when struck
by a projection formed on the lever it withdraws the catch pin it against
the pressure of the spring and releases the bar i Upon the lower end of the
bar
is the hammer h.
The action is as follows:-The crank pin raises the lever and rod so as
through the lever i and links 10 to press down the sleeve and compress the
spring upon the collar and put pressure on the bar 2 which is prevented from
descending by the catch pin. As the movement continues the projection 2 strikes
upon the trigger and withdraws the catch pin so releasing the bar¹ and
allowing the spring to drive it and the hammer A downwards until the latter
strikes upon the upper of the boot. This takes place in advance of the similar
operation of the ordinary driver at of the machine."
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 is :
In machines for tacking or nailing employed in the manufacture of boots or
shoes.

page_text: 71
1. Constructing the cylinders and shoots for the supplying of tacks or nails in
such a manner that they are movable at will so that any desired cylinder can be
brought into action substantially as described.
+
2. Mounting cylinders and shoots for the supplying of tacks or nails in a frame
which may be moved by a rack and pinion so as to bring any desired cylinder
into action and maintaining the same in position by a spring catch substantially as
described.
3. The arrangement of the driving band and guide pulleys for rotating the
cylinders so as to permit of the movement of the cylinders without preventing the
band from driving substantially as described.
4. Actuating a hammer or presser in advance of a nail driver for the purpose of
levelling the pleats in a boot upper before driving a tack or nail into the same
substantially as described.
This f