Improvements relating to Machines for Use in Driving Tacks in the Manufacture of Boots and Shoes.
Year: 1895

page_text: Date of Application, 5th Dec., 1895
Complete Specification Left, 9th June, 1-95-Accepted. 18th July, 1896
[Communicated from abroad by BOSTON LASTING MACHINE COMPANY, a
corporation organized under the laws of the State of Maine, of 105 Bedford
Street, Boston, Massachusetts, United States of America.]
Improvements relating to Machines for Use in Driving Tacks in
the Manufacture of Boots and Shoes.
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 to be as follows:-
This invention relates to tack-delivering devices for use in machines adapted to
drive tacks into boot or shoe uppers and soles in the operation of lasting, the
machine having a tack-delivering nozzle which receives the tacks one at a time
and presents them to a reciprocating driver which is forced into the nozzle and
drives the tack therefrom into the upper and sole of a shoe mounted on a last and
presented to the lower end of the nozzle. In a machine of this class, the depth
to which the tacks are driven is determined by the relative positions of the work-
supporting end of the nozzle and the end of the driver when the latter is at the
extreme of its downward movement. It is often desirable to vary the depth of
penetration of the tack, or in other words, the projection of the head of the tack
above the outer surface of the upper, some kinds of work requiring a greater
projection of the tack-head than others, In some kinds of work it is desirable to
drive the tacks more deeply at the heel portion than elsewhere, in order that the
heel tacks may remain in place in the completed boot or shoe after the lasting
operation, the other tacks being pulled out.
My invention has for its object to enable the tack-delivering nozzle to be readily
adjusted, so that the operator may readily regulate the depth of penetration of the
tack at any time during the operation of lasting, and thus cause some of the tacks
to be partially and others wholly driven. To this end, the invention consists in a
tack-driving machine comprising a supporting frame, a reciprocating driver, a
yieldingly mounted tack-delivering nozzle movable on the supporting frame in the
direction of movement of the driver, and two interchangeable stops located at
different heights, each adapted to positively arrest the upward movement of the
nozzle, so that the tacks may be either driven home, their heads bearing on the
face of the work, or only partially driven, their heads standing out from the work.
The invention also consists in certain incidental features, all of which I will now
proceed to describe.
My invention may be embodied in a tack-driving lasting-machine of any suitable
construction, provided with a suitable supporting frame, a reciprocating driver
which drives the tacks into the upper and inner sole of a boot or shoe, and suitable
means for supplying the tacks to the driver. Said machine will also he provided
with a throat or nozzle through which the tacks are driven by the driver, as usual,
the lower end of said nozzle constituting a rest against which the work is held by
the operator.
It will also be understood that the machine is or may be provided with suitable
mechanism for supplying tacks to the throat or nozzle, the tacks being supplied
automatically and in such manner that at each descent of the driver a tack is
delivered to the nozzle in time to be driven therefrom by the driver. The said

page_text: nozzle is affixed to a holder, which is formed as a slide fitted to move vertically
in guides on the frame of the machine, so that the nozzle is adapted to move to a
limited extent in the direction of movement of the driver, the upward movement
of the nozzle being limited by a fixed stop or shoulder on the frame of the
machine.
In machines now in common use, the let-off mechanism which supplies tacks to
the nozzle is operated by the upward movement of the nozzle, the latter being
normally depressed below the said stop or shoulder, so that it is free to be moved
upwardly by the upward pressure of the work against it, the operator being thus
enabled to cause the insertion of a tack into the work at any desired point by
forcing the work upwardly against the nozzle, the latter being thus forced upwardly
until it meets the shoulder, and in its upward movement actuating mechanism that
supplies a tack to the throat. All this is well known and forms no part of my
invention.
Heretofore the upward movement of the nozzle has been limited only by the
fixed stop or shoulder; hence the work has been held at an unvarying point with
relation to the lower end of the driver when the latter is depressed, the tacks
being therefore driven uniformly, with no provision for holding the nozzle
or work-rest at different heights and thus varying the depth of insertion of
the tacks.
In carrying out my present invention, I provide two interchangeable stops
located at different heights relatively to the path of the driver and each adapted
to positively arrest the upward movement of the nozzle, so that the operator can
cause a varying depth of insertion of the tacks. In the preferred embodiment of
my invention, one of said stops is the fixed shoulder, while the other is an arm
pivoted to the frame of the machine and adapted to swing under the fixed shoulder
and thus become interposed between said shoulder and the nozzle, said arm being
movable into and out of the path in which the nozzle moves. When the movable
stop is thus interposed, it shortens the upward movement of the nozzle so that the
latter supports the work below the lower end of the driver, the tacks being there-
fore left with their heads projecting from the work. When the movable stop is
displaced, it permits the nozzle to move upwardly to the fixed stop or shoulder,
thus causing the tacks to be driven home.
Dated this 5th day of December 1895.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements relating to Machines for Use in Driving Tacks in
the Manufacture of Boots and Shoes.
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 tack-delivering devices for use in machines adapted to
drive tacks into boot or shoe uppers and soles in the operation of lasting, the
machine having a tack-delivering nozzle which receives the tacks one at a time and
presents them to a reciprocating driver which is forced into the nozzle and drives
the tack therefrom into the upper and sole of a shoe mounted on a last and
presented to the lower end of the nozzle. In a machine of this class, the depth
to which the tacks are driven is determined by the relative positions of the work-
supporting end of the nozzle and the end of the driver when the latter is at the

page_text: A represents a portion of the frame of a tack-driving lasting-machine, and
B represents the reciprocating driver which drives the tacks into the upper and
inner sole of a boot or shoe.
The machine may be of any suitable construction, and is provided with suitable
means for supplying the tacks to the driver.
a represents the throat or nozzle through which the tacks are driven by the
driver, as usual, the lower end of said nozzle constituting a rest against which
the work is held by the operator.
It will be understood that the machine is or may be provided with suitable
mechanism for supplying tacks to the throat a, the tacks being supplied
automatically and in such manner that at each descent of the driver a tack is
delivered to the nozzle in time to be driven therefrom by the driver. The nozzle a
is affixed to a holder b, which is formed as a slide fitted to move vertically in
guides on the frame of the machine, so that the nozzle is adapted to move to a
limited extent in the direction of movement of the driver, the upward move-
ment of the nozzle being limited by a fixed stop or shoulder A' on the frame of
the machine.
In machines now in common use, the let-off' niechanism which supplies tacks to
the nozzle is operated by the upward movement of the nozzle, the latter being
normally depressed below the shoulder A', so that it is free to be moved upwardly
by the upward pressure of the work against it, so that the operator can cause the
insertion of a tack into the work at any desired point by forcing the work upwardly
against the nozzle, the latter being thus forced upwardly until it meets the
shoulder A', and in its upward movement actuating mechanism that supplies a tack
to the throat. All this is well known and forms no part of my invention.

page_text: Heretofore the upward movement of the nozzle has been limited only by the
fixed stop A'; hence the work has been held at an unvarying point with relation
to the lower end of the driver when the latter is depressed, the tacks being
therefore driven uniformly, with no provision for holding the nozzle or work-rest
at different heights and thus varying the depth of insertion of the tacks.
In carrying out my present invention, I provide two interchangeable stops
located at different heights relatively to the path of the driver and each adapted
to positively arrest the upward movement of the nozzle, so that the operator can
cause a varying depth of insertion of the tacks. In the embodiment of my invention
here shown, one of said stops is the fixed shoulder A', while the other is an arm c
pivoted at e' to the frame of the machine and adapted to swing under the shoulder A'
and thus become interposed between said shoulder and the nozzle, said arm being
movable into and out of the path in which the nozzle moves. When the movable
stop is thus interposed, it shortens the upward movement of the nozzle, so that
the latter supports the work below the lower end of the driver, the tacks being
therefore left with their heads projecting from the work, as shown in Figure 3.
When the movable stop is displaced, as shown by dotted lines in Figure 5, it
permits the nozzle to move upwardly to the fixed stop A', thus causing the tacks
to be driven home, as shown in Figure 4.
Having now particularly described and ascertained the nature of the said 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. A tack-driving machine comprising a supporting frame, a reciprocating driver,
a tack-delivering nozzle movable on the supporting frame in the direction of
movement of the driver, and a stop device located above the delivering end of the
nozzle and movable into and out of the path in which the nozzle moves.
2. In a tack-driving machine, the combination with a reciprocating driver, of
a work-rest composed of a tack-delivering nozzle which is movable in the direction
of movement of the driver, a fixed shoulder or support arranged to hold the
nozzle in one position, and a movable support adapted to be interposed between
the nozzle and the fixed support.
3. In a tack-driving machine, the combination of a reciprocating driver, a
slide movable on the frame of the machine in the direction of movement of the
driver, a tack-guiding throat affixed to said slide, and a stop or support pivoted
to the supporting frame and adapted to limit the upward movement of the slide
.and nozzle.
Dated this 0th day of June 1806
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.