Improvements in Lasting Machines
Year: 1893

page_text: COMPLETE SPECIFICATION..
Improvements in Lasting Machines.
A communication from the WHIFFEN-LAKE LASTING MACHINE COMPANY, of
Hammonton, Atlantic County, New Jersey State, United States of America,
Manufacturers.
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¡L, CHARLES AUBREY DAY, of 321, High Holborn, in the County of London,
Chartered Patent Agent, do hereby declare the nature of the said invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
The object of this invention is to construct a device by which the thin insoles of
shoes will be spread in a machine during the process of lasting.
:
This object is attained in the following manner, reference being had to the
accompanying drawings, in which ;-
Fig. 1, is a side view of sufficient of a lasting machine to illustate the invention,
the view showing the last in position.
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Fig. 2, is a side view of the spreading device drawn to a larger scale than Fig. 1.
Fig. 3, is a section on the line 1-2, Fig. 2.
Fig. 4, is a plan view.
Fig. 5, is a plan view with the top plates removed.
Fig. 6, is a section on the line 3-4, Fig. 5, and,—
Fig. 7, is a view of a modification.
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Shoes are now provided in some cases with very thin insoles, so thin in fact that:.
it is a difficult matter to last over them, as they will wrinkle and bulge when,
pressure is applied to force the upper around the last, and in lasting machines, it.
has been almost impossible to last an upper on a thin insole without casing the latter
to bulge. To overcome this difficulty in lasting machines, the apparatus now to be
described has been devised.
In a machine to which the invention may be applied the last is mounted on suitable
supports, nippers engage the upper at the edge to hold it while the last is forced
into it, and presser pads press the edge of the upper under the last and onto the
insole, and it is this pressure that causes the very thin sole to buckle, so that when
the shoe is made up a ridge is formed on the inside of the shoe. By the improved.
device the insole is retained in its flat position until the presser pads securely bind.
the edges of the upper to the insole, after which the device is released.
A, is the frame of the machine in which the last supports B, slide, being raised
and lowered by the cams D, mounted on the driven cam shaft D¹.
E is the upper grip plate on which are mounted the nippers F, (one of which is
shown in Fig. 1,) E', being the lower grip or jaw plate to which are connected the
rods f, which act. to move the jaws of the nippers. These plates E, E¹, are raised
and lowered by cams on the cam shaft D'.
Mounted on the toe standard B, is a head G, and in this head slides a lock H, to
which is secured at the point h, the spring presser plate I, which presses the too
portion of the insole against the last. This spring plate I, is guided in the head b,.
of the toe standard as clearly shown in Fig. 2.
Pivoted at g, on each side of the slideway H, are two arms J, to which are
secured the spring fingers j, which tend to force the insole against the upper on each
side of the ball of the last.
The arms J, overlap at the rear as shown in Fig. 5, and are in the path of the
projections i, of the block H, so that when the block is moved in the direction of
the arrow, Fig. 5, the two arms J, are retracted. This is done as the presser pads
commence to press the upper onto the insole.
M, is a lever pivoted at m, to the toe-standard as clearly shown in Fig. 2, this
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page_text: lever having a pin m' which is adapted to a slot n, in an arm h', of the block H.
This lever M, is connected at m², to a rod P, which passes through the upper grip
plate E, and is connected thereto by means of springs p, p, situated above and
below the plate E, and confined in position by sleeves 'or nuts g, q'. Thus, it will
be seen, that when the plate E, is depressed to depress the nippers so that the
pressing pads will have a clear way, the side spring fingers j, will be retracted for
the purpose above described.
In order to adjust the side fingers j, for different widths of shoes, I move the
block H, longitudinally by means of the adjusting screw e, Fig. 2, so that a
projection, acts on the arm J, to retract the same as shown in Fig. 5.
In Fig. 7, is shown the spring plate I, having fingers j', which may be substituted
for the fingers, this device being used in cases where it is not desirable to retract
the side arms..
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f...
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is T :
:
1. The combination in a lasting machine, of the last support, the lasting
mechanism, a retractable insole holder having movable arms for engaging the insole,
and connections substantially as described between the retractable insole holder and
the lasting mechanism, substantially as specified.
2. The combination of the standard, the head, pivoted arms on said head, having
spring fingers, a block adapted to slide in said head and acting on said arms to
extend or retract them, substantially as set forth.
3. The combination of the standard, the head carried thereby, a block sliding in
said head, a spring plate carried by said block, arms pivoted to the head, and having
portions in the path of the block so that on the movement of said block the arms
will be acted upon, substantially as and for the purpose set forth.
4. The combination of the standard, the head thereon, a sliding block adapted to
said head, spring plates carried by said standard, arms pivoted to the head and
acted upon by the block, and a set screw for adjusting the block in the head;
substantially as and for the purpose set forth.
5. The combination in a lasting machine, of the last support, grippers for drawing
the upper upon the last, a movable gripper plate, a standard, a head on said
standard, arms pivoted to said head, a sliding block, a pivoted lever acting on said
sliding block, and a rod connected to said lever and to the movable gripper plate
whereby, on the depression of the said gripper plate the arms will be retracted,
substantially as and for the purpose set forth.
Dated this 10th day of February 1893.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C., Agents for the Applicant.