Improvements in Devices for Delivering Tacks in Tack Driving Machines Used in the Manufacture of Boots and Shoes.
Year: 1895

page_text: Date of Application, 5th Dec., 1895
Complete Specification Left, 9th June, 1896-Accepted, 18th July. 1896
PROVISIONAL SPECIFICATION.
[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 in Devices for Delivering Tacks in Tack Driving
Machines Used 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 holds them for the action of 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.
It is the object of my invention to provide means whereby the operator inay
quickly vary the length of the tack-delivering nozzle, so that it will vary the depth
of penetration of the tacks, in order that the desired variation in the projection of
the tack-heads may be secured; and to this end the invention consists in a
telescopic tack-delivering nozzle comprising two members or sections, one of which
is movable upon the other to lengthen and shorten the nozzle, and means for
supporting the movable member in the different positions to which it may be
adjusted.
In carrying out my invention, I provide a tack-delivering nozzle, which is
adapted to be secured to a suitable part of a lasting or tack-driving machine. The
said nozzle may be screw-threaded at its upper portion and screwed into a
socket in an arm or holder, which constitutes a part of the machine.
As my invention relates wholly to the tack-delivering device, I deem it
unnecessary to describe the driving mechanism and other parts of the machine, it
being sufficient to say that the nozzie is supplied with tacks one at a time, and
supported so that a reciprocating driver alternately enters and is withdrawn from
the nozzle.
The nozzle is of telescopic construction, and comprises a body member, and an
adjustable member or foot, which is movable lengthwise upon the body-member to
alternately lengthen and shorten the nozzle. Means are provided whereby the
movable member or foot may be supported in either of the two required positions,
said means being preferably as next described.

page_text: To the body member is affixed a cam-shaped collar having two projections, each
having an inclined face, said collar being preferably formed as a nut screwed upon
the threaded part of the said body member, and constituting a stop against which
the adjustable member or foot is yieldingly held by a spring interposed between
shoulders or bearings formed on the said members. The adjustable member or
foot is also provided with two projections, each having an inclined face, said
projections being preferably formed on an externally milled and internally threaded
collar screwed upon the upper portion of the foot..
When the foot is turned to the position for shortening the nozzle, the projections
upon the body member and the adjustable member or foot, interlock and co-operate
with the spring above described, in securing the foot in a raised position,
permitting the upper to be held so that the reciprocating driver will drive the
tacks to the maximum depth. When the foot is turned to the position for
lengthening the nozzle, the inclined faces upon the body member and the adjustable
member or foot, cause a depression of the foot, so that the upper is correspondingly
depressed, and the heads of the tacks are left projecting.
I prefer to provide one of the projections upon the body member with a
downwardly projecting dowel, which interlocks with a cavity in the adjustable
member or foot when the foot is in its raised position, and with another cavity upon
the said foot when the foot is in its depressed position, the foot being thus prevented
from turning accidentally from one position to the other.
It will be seen that when the operator desires to change the position of the foot,
he first slightly depresses it to separate the dowel from the corresponding cavity,
and then turns the foot until its position is changed by the conjoint action of the
spring and projections.
I do not limit myself to the described devices for holding the adjustable member
or foot in the different positions to which it may be adjusted, and may employ any
other suitable means for securing the desired result.
The cam-shaped collar upon the body member may be considered a bearing of
varying height, which determines the height of the adjustable member or foot by
the rotary adjustment of the latter, the rotation of the foot quickly changing its
height.
Improvements in Devices for Delivering Tacks in Tack Driving
Machines Used 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 aud
holds them for the action of a reciprocating driver which is forced up 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

page_text: It is.
the driver, when the latter is at the extreme of its downward movement.
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.
It is the object of my invention to provide means whereby the operator may
quickly vary the length of the tack-delivering nozzle, so that it will vary the
depth of penetration of the tacks, in order that the desired variation in the
projection of the tack-heads may be secured; and to this end the invention
consists in a telescopic tack-delivering nozzle comprising two members or sections,.
one of which is movable upon the other to lengthen and shorten the nozzle, and
means for supporting the movable member in the different positions to which it may-
be adjusted.
Of the accompanying drawings, forming a part of this specification,-
Figure represents a side view of a tack-delivering device embodying my
invention, the adjustable member being shown in its raised position to cause the
maximum depth of penetration of the tack.
Figure 2 represents a similar view, showing the adjustable member in its
depressed position to cause the minimum penetration of the tack.
Figure 3 represents a section on line 3-3 of Figure 1.
Figure 4 represents a section on line 4-4 of Figure 2.
The same letters of reference indicate the same parts in all the figures.
In the drawings-
a represents a tack-delivering nozzle, which is adapted to be secured to a suitable-
part of a lasting or tack-driving machine, the said nozzle being here shown as
screw-threaded at its upper portion and screwed into a socket in an arm or holder >>
which constitutes a part of the machine.
As my invention relates wholly to the tack-delivering device, I deem it
uunecessary to describe the driving mechanism and other parts of the machine, it.
being sufficient to say that the nozzle is supplied with tacks one at a time, and
supported so that the reciprocating driver alternately enters and is withdrawn
from the nozzle.
The nozzle is of telescopic construction, and comprises the body member a and
an adjustable member or foot c, which is movable lengthwise upon the member a
to lengthen the nozzle, as shown in Figure 4, and shorten the nozzle, as shown in
Figure 3. Means are provided whereby the movable member or foot may be
supported in either of the positions shown, said means being preferably as next
described.
To the member a is affixed a cam-shaped collar at having two projections a' each
having an inclined face a³, said collar being preferably formed as a nut screwed
upon the threaded part of the member a and constituting a stop against which the
adjustable member or foot c is yieldingly held by a spring d interposed between
shoulders or bearings formed ou the said members. The foot c is provided with
two projections c², each having an inclined face c³, said projections being preferably
formed on an externally milled and internally threaded collar c' screwed upon the
upper portion of the foot c.
When the foot is turned to the position shown in Figures 1 and 3, the
projections a and c interlock and co-operate with the spring d in securing the
foot in a raised position, permitting the upper e to be held so that the driver r wil!
drive the tacks to the maximum depth. When the foot is turned to the position
shown in Figures 2 and 4, the inclined faces a³ ³ cause a depression of the foot,
so that the upper e is correspondingly depressed and the heads of the tacks are left
projecting.
I prefer to provide one of the projections a³ with a downwardly projecting
dowel a', which interlocks with a cavity c, as shown in Figure 3, when the foot is

page_text: in its raised position, and with a cavity c, as shown in Figure 4, when the foot is
in its depressed position, the foot being thus prevented from turning accidentally
from one position to the other.
It will be seen that when the operator desires to change the position of the foot,
he first slightly depresses it to separate the dowel at from the corresponding cavity,
and then turns the foot until its position is changed by the conjoint action of the
spring and projections.
I do not limit myself to the described devices for holding the adjustable member
or foot in the different positions to which it may be adjusted, and may employ any
other suitable means for securing the desired result.
The cam-shaped collar a¹ may be considered a bearing of varying height, which
determines the height of the foot c by the rotary adjustment of the latter, the
rotation of the foot quickly changing its height.
Having now particularly described and ascertained the nature of my 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-delivering nozzle comprising telescopic members, one rotatable and
movable longitudinally upon the other, and a bearing of varying height whereby
said movable member is moved longitudinally when rotated.
2. A tack-delivering nozzle having a cam-shaped collar, an adjustable foot or
extension, and a spring whereby said foot is yieldingly pressed against said
collar.
3. A tack-delivering nozzle having a cam-shaped collar, an adjustable foot or
extension having cam-shaped projectious, and a spring whereby the projections of
the foot are pressed yieldingly against the said collar.
4. A tack-delivering nozzle having a foot or extension which is rotatable and
movable longitudinally on the nozzle, interlocking projections on the nozzle and
foot, and a spring whereby said projections are yieldingly pressed together, said
projections having cams or inclines which cause a longitudinal movement of the
foot when the latter is partially rotated on the nozzle.
Dated this 9th day of June 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.