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

page_text: Date of Application, 20th Feb., 1894-Accepted, 7th Apr., 1894
COMPLETE SPECIFICATION.
[Communicated from abroad by JAMES BARRETT, of Boston, in the County of
Suffolk, State of Massachusetts, United States of America, Machinist, and
JOHN PILLING, of Lowell, Massachusetts, United States of America,
Manufacturer.]
Improvements in Tacking Machines for 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 improvements in machines for tacking shoes in which
there is a constantly running driver and a tack feed normally inoperative and
brought into operation to drive a single tack at the will of the operator.
Figure 1 is a side elevation of such a machine;
Figure 2 is a side elevation of the tacking mechanism;
Figure 3 is a section on line y, y of Figure 2 showing the location of the two
raceways and the manner of holding the tack under the driver;
Figure 4 is a section on line v, v of Figure 2 and Figure 5 a section on line t, t
of Figure 2;.
Figure 6 is a detail showing the mechanism by which the tack feed is
accomplished;
Figures 7, 8 and 9 show details of the mechanism by which the kind of tack to
be fed is determined, Figures 8 and 9 being sections on line z, z of Figure 4;
Figure 10 is a section on line w, wc of Figure 4;
Figures 11, 12 and 13 show details of the jack lifting mechanism; Figure 12
being a section on line, of Figure 11 and Figure 13 a section on line r, r of
Figure 11.
A représents the standard or post and B the frame holding the running
mechanism. C is the main shaft which has connected to it fast and loose
pulleys C for receiving the driving belt, and the pulley C' which, by means of the
belt H carries power to the pulley H' for lifting the jack in the manner to be
described.
D, D are receptacles to hold the tacks. One receptacle is provided on each
side of the machine and in each receptacle rotates a tack feed wheel D' mounted on
the transverse shaft D driven by the worm gearing D³, D'. D' is a clearing
device to arrange the tacks properly in the raceways. This clearer is attached
at D to one end of the bell crank lever D' mounted on one end of the shaft Ds.
The further end of one of these bell cranks (see Fig. 2) is struck by series of
projections D on the face of the gear D', thus tipping it and moving both clearers
against the force of the spring D¹º.
C2 is the tack driver attached to the lower end of the reciprocating bar C³, hung
from the cross head C+, operated from the crank disk C³, which carries a suitable
crank pin, all in a well known manner.
E, F are the raceways which lead to the one feed nozzle G through which the
driver reciprocates and which serves as a guide for the tack to be driven.
The gates closing the raceways E and F are shown at E' and F' respectively,
these parts serving not only as gates but as pushers to push the tack laterally,
after it has been released from the raceway, through the passage in which the
gates slide into the nozzle, where it is held between the two gates until the driver

page_text: comes down and drives it. Each slide E' and F' is attached to a hanger E, F,
extending from a sliding quill E³, F³, mounted one on each end of the same fixed
rod or pin J, one being adapted to slide to the right and the other to the left
(see Fig. 4) each to open the end of its own raceway. A spring is provided which
connects the arms E, F, each projecting from one of the quills, so that the two
slides are normally held in a closed position. A bell crank E' mounted on the
stud E operates the quill E³, and the bell crank F5 mounted on a sleeve F* carried
by the rock shaft K operates the quill F³.
The lower end of each bell crank is forked and fits over a stud e, attached to
'one of the quills.
The forward end of the rock shaft K carries a housing K', in which is pivoted
at ka lever K. It also carries a detent pawl having a tooth k², which may
engage with the notched end of the fixed projection of the lever K². The
position of the lever K2 determines which quill shall be operated. This lever is in
the nature of a double rocker arm projecting on each side of the rock shaft K, on
which, it is mounted. Its effect upon the quills will be described below. The rock
shaft K is operated by the rocker arm K³ which it carries and which is moved
against the force of the spring *.
The rocker arm K³ is struck by the four-sided cam L, which is caused to make a
quarter revolution by some act of the operator when he desires to cause a tack to
be fed to the driver, the machine not being a constantly operating machine although
its driver is constantly running. A mechanism for this purpose is shown in detail
in Figure 6.
The cam L is mounted on a shaft L' which also carries a ratchet L' having
teeth far apart so that the pawls l, will not ordinarily engage with them and
turn the shaft L'. These pawls are mounted on the rocking piece L³ on the
stud 2, the rocking piece being operated by the pitman L from the eccentric L³
on the shaft C.
The shaft L' is partly turned by the operator when he desires to feed a tack,
either by a connecting rod running to a treadle or in the following way. The
shaft L carries a second ratchet L operated by a sliding pawl L' carried on the
end of the part L, mounted on the vertical slide L', carrying the nozzle G, and
the construction of these parts is such that whenever the nozzle G is lifted, the
ratchet L will be turned a fraction of a revolution, and with it the shaft L', thus
also turning the ratchet L2 to bring its teeth within reach of the pawls, which,
as they constantly oscillate, will engage with these teeth and cause the shaft L' and
consequently its cam L to complete a quarter of a revolution and oscillate the
rocker shaft K and the lever K2.
If the lever K2 is in the position shown in Figure 8, it can touch neither the
end E' of the bell crank E' nor the end F7 of the bell crank F, and consequently
neither of those parts will move and no tack will be fed, although the lever K' be
oscillated. If however, the lever is turned so that it lies in the position shown in
Figure 9, when oscillated, it will strike the projection F' on the bell crank F and
lift that end of the bell crank, thus moving the gate F so as to allow one tack to
come down the raceway into position in front of it.
As the projection on the cam L passes the end of the rocker arm K³ the spring
and the spring connecting the quills cause the parts to resume their original
position, the gate carrying the tack, which it has released, forward through its
slide and a suitable opening in the nozzle until the tack strikes the opposing end of
the other gate, where it will be held until the driver in its descent, drives it into
the work.
When the lever K2 is turned so that the parts are in the position shown in
Figure 7, the operation is the same except that the other end of the lever K
engages with the end E7 of the bell crank E' and thus acts upon the quill E³ and
its connecting parts.
To lift the nozzle, I utilize the jack or last holding mechanism which is pivotally
mounted on the end of the lever H2 pivoted at H³ in the bottom of the machine.

page_text: This lever His provided with a bevelled segment H, which engages with a.
bevelled gear Hs on the end of the shaft H', carrying a friction clutch H'.
This clutch is thrown into connection with the pulley H' by means of the bell.
crank He, attached to the adjusting lever H, operated by the treadle H pivoted
at H
By depressing the treadle the clutch H is thrown into engagement with the
constantly running pulley H', and the shaft H being rotated, turns the gear H³ to
depress the end H of the lever H2 and lift the jack. The operator can guide the
upper end of the jack to the nozzle so as to cause the nozzle to be lifted and a tack
to be driven in the required spot.
By means of the mechanism above described the machine may be supplied with
two sizes of tacks which may be used at will, according to the kind of work to be.
done. This machine is particularly adapted for use in lasting boots and shoes.
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 correspondent, I declare that what I claim is :-
1st. The gates adapted to move in opposite directions, each normally closing the
end of a raceway aud combined to hold a tack which has been fed in the path of
the descending driver, in combination with mechanism for operating one gate to.
feed a tack from its raceway, as set forth.
2nd. In a tack driving machine, in combination, two tack feeding raceways and
a driving mechanism common to both, two sliding gates each suitably mounted and
normally closing the lower end of a raceway, and a connecting mechanism such as.
the lever K adapted to connect one of said gates with an operating mechanism,.
whereby said gate shall be reciprocated, as and for the purposes set forth.
3rd. In a tacking machine having a driving shaft and a continuously running
driver operated thereby, a tack feed device adapted to be operated from said
driving shaft, but normally disconnected therefrom, a movable nozzle adapted to
be lifted and thereby to connect said tack feed with said drive shaft and a jack
lifting mechanism also adapted to be operated from said drive shaft and thus to
lift said nozzle as described.
4th. A machine for tacking shoes containing the following parts in combination,.
a nose piece, a jack normally free to be lifted thereto, a constantly running pulley,
a yielding lifting mechanism comprising a clutch adapted to be connected to said
pulley and mechanism connecting said clutch and said jack, and means adapted to
cause the engagement of said clutch and said pulley and hold them as described, all
arranged for the purposes set forth.
5th. A machine for driving a single tack having in combination a constantly
running tack driving mechanism, a tack feed, a tack feed motor normally dis-
connected from said tack feed, mechanism including a movable nose piece adapted
to connect said tack feed motor with said tack feed, a jack normally free to be
lifted to and lift said nose piece, a constantly running pulley, a yielding lifting
mechanism comprising a clutch adapted to be connected to said pulley and
mechanism connecting said clutch and said jack, all as and for the purposes set
forth.
Dated this 20.1 da. W 1901
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.