Improvements in Machines for Feeding and Driving Fasteners for use in the Manufacture of Boots and Shoes.
Year: 1897

page_text: Date of Application, 12th Oct., 1897-Accepted, 4th Dec., 1897
[Communicated from abroad by WALTER SHAW, of No. 108 Summer Street, Boston,
in the County of Suffolk and State of Massachusetts, United States of America.]
Improvements in Machines for Feeding and Driving Fasteners for
use 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 in and by the following statement:-
My invention is the combination of Fastener Driving Mechanism with Fastener
Feeding Mechanism in such a fashion that the Driver makes several strokes while
the Feed Mechanism is feeding one fastener; the object being to drive a single
fastener in a small fraction of a second and yet to allow an interval of time, between
the successive driving of fasteners, sufficient to allow the operator to move and
manipulate the work.
Another feature of my invention is the combination with such a fastener driving
machine as above described of an appliance under the control of the operator by
which he can cause a fastener to be driven whenever required.
The details of construction of a Fastener Driving Mechanism such as is illustrated
in the drawings, are too well known to those skilled in the art of making shoes by
machinery to require extended description.
In the drawings I have shown my invention embodied in a Lasting Machine, in
which:
Figure 1 is an elevation of a fastener driving machine embodying my invention;
Figure 2 is a detail of the automatic slow motion feed;
Figure 3 is a section on line 3-3 of Fig. 1, looking in the direction of the arrow;
Figure 4 is a detail of the pawl actuating mechanism.
In the drawings A is the standard of a lasting machine upon the upper end of
which is mounted the driver mechanism, the receptacle for the tacks and the tack
chute (the receptacle and the chute being shown in dotted lines) through which the
tacks are conveyed from the receptacle to the driver in the well known way. B is
the main driving shaft, driven through the pulley b from any source of power and
connected by a crank and connecting rod, or in any suitable way, with the driver bar,
which is reciprocated in bearings fast to the frame of the machine. D is the feed
mechanism driving shaft, the rotation of which feeds fastener under the driver in the
familiar way.
Mounted upon the shaft B is an eccentric b¹ which operates two pawls d¹ d²
continuously, and, when the relation between the pawls and the teeth of their ratchet ³
allows it, the shaft D is rotated.

page_text: The pawls d d are arranged, as will be apparent upon reference to fig. 2, in such
a fashion that the downward movement of eccentric will, through pawl rotate
shaft D one sixteenth of a revolution, while the upward movement of the eccentric
will, through pawl d² rotate shaft D in the same direction one-sixteenth of a revolu-
tion, but, as the teeth of the ratchet wheel upon which pawls & act, are set
90 degrees apart, it is obvious that no further movement of shaft D is possible until
shaft D is revolved one-eighth of a revolution further. This further movement is
accomplished as follows: Rod H, having a hook h at its upper end to engage ratchet d³,
is supported by a spring which tends constantly to throw rod up, the upward
motion being limited by stop h adjustable by means of screw . Upon rod Hare
ratchet teeth and sliding upon the toothed mok of rod H is a pawl shield J connected
to lever F. Shaft B carries a worm by which meshes with a worm gear 6 running in
bearings and carrying cams b. These cams engage a cam surface upon lever
(which is pivoted at one end to the frame of the machine) and move it up, the
inotion being transmitted through connecting link j, arm j, rock shaft, j³ and arm
to slide, which carries pawl
The lever F is operated by the treadle G.
The operation is as follows: to set the feed mechanism in motion the lever Fis
depressed with the result that the pawl shield J is drawn down, exposing the ratchet
teeth upon the rod H. The pawl, carried in slide & which is reciprocated by the
movement of arm, thereupon engages the ratchet and forces rod H down against
the force of spring which draws the rod H up as soon as the pawl makes its upward
stroke. In this way regular reciprocating motion will be imparted to the rod H
while lever F is depressed; and the feed shaft D will, at each action of the pawl
and rod H, be rotated 15 degrees and the movement completed by the pawls d' d² as
above described. To enable the operator to get a fastener immediately upon
depressing lever F, I use the connecting rod E which is attached to lever F and
consequently moves shaft D), by means of its hooke and ratchet d' when the lever is
depressed.
The characteristic features of my invention will be plain when it is considered that
so long as the pawl shield J is out of operation the tack feed is operating to feed one
tack for every fourteen strokes of the driver, (if each cam b requires fourteen revolu-
tions of shaft B to cause it to operate pawl j¹) and the operator will thereby be
enabled to move the work, (held usually on a power raised jack) under the nozzle
of the machine, after the tack feed has fed one iack before it feeds the next tack;
and yet he can get a tack almost instantaneously by simply moving hook c. If the
driver make twenty strokes per second, the operator can get a tack as soon as he
depresses trendle G, or otherwise moves hook c; and he will get tacks at intervals of
about half a second, so long as he keeps the treadle G depressed, or otherwise keeps
pawl in operation.
While either of the features of my machine, as above set forth, may be used
without the other, as will be plain, yet a tacker with an automatic slow motion
feed, is a new type of machine, and that type of machine is greatly improved by
providing it with means to feed a tack by the act of the operator. In brief the
main feature of my invention is a fastener driving machine with a rapidly running
driver and a slow feed; and the second feature, the combination of such a machine
with means by which the operator can set the feed into operation at his pleasure.
Having now particularly described and ascertained the unture of my 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:
First A fastener driving machine comprising a fastener driving mechanism;
fastener feeding mechanism and speed reducing mechanism controlling the fastener
feeding mechanism to cause the feeding mechanism to feed only one fastener for
several strokes of the driver.
Second: A fastener driving machine comprising a fastener driving mechanism ;

page_text: fastener feeding mechanism; speed reducing mechanism controlling the fastener
feeding mechanism and a supplementary feed starting mechanism.
Dated this 12th day of October 1897.
HASELTINE LAKE & Co.,
45 Southampton Buildings, London, W.C. Agents for the Applicant.