Improvements in and relating to Machinery for Inserting Metallic Fastenings.
Year: 1898

page_text: Date of Application, 4th Oct., 1898-Accepted, 7th Jan., 1899
COMPLETE SPECIFICATION!
Improvements in and relating to Machinery for Inserting Metallic
Fastenings.
A communication from abroad by the MCKAY SHOE MACHINERY COMPANY, of 76,
Lincoln Street, Boston, in the State of Massachusetts, one of the United
States of America.
I, ALFRED GEORGE BROOKES, of 55 and 56, Chancery Lane, in the County of
London, Chartered Patent Agent, 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:--
In machines for inserting metallic fastenings, and using a horn inside the shoe
to hold it in place while the fastenings are being driven to unite the sole and
upper, great difficulty is experienced in getting the anvil of the horn correctly
in position inside the toe, especially of that class of shoe having what is called
pointed or razor toes.
To adapt a nailing machine to this class of work, I have provided a horn which
is pivotted on its rising and falling spindle, and the tip or anvil of the horn is
tapered or drawn smaller at one part, and has two clinching cavities, one being
hereinafter designated as an auxiliary cavity; the main cavity being used to
clinch the nails which go into the sole at all places except at the point of the
toe, the horn being turned on its pivot by the operator who grasps the shoe in his
hand, just as the nails are to be driven in the sharper parts of the narrow or
pointed toe, the position of the horn being thereby changed so as to put the second
or auxiliary cavity at the end of the horn in place to receive and clinch the nails
entering the sole at and about the toe.
The machine upon which I have chosen to illustrate the improved horn is one
of a well known variety adapted to feed and drive two lengths of string nails,
or nails connected point to head and handled as a wire.
Fig. 1, in side elevation, represents a sufficient portion of a nailing machine with
the improvements added, to illustrate the invention;
Figs. 2 and 3 are enlarged details showing the coupling between the lever and
the rod;
Fig. 4 shows the tip or anvil at the end of the horn in different views;
Fig. 4, a modified form of tip;
Fig. 5, an enlarged detail of the nose through which the nail is driven;
Figs. 6 and 7 show the horn and its spindle;
Fig. 8, an eccentric for adjusting the pawl carrier;
Fig. 9, a detail showing the connection of the end of the horn with the spindle;
and
Fig. 10, an enlarged detail showing the shape of the shoulder of the horn
against which the pawl works when the horn is in working position.
The frame consists essentially of a standard A, and a head A', the main shaft A2
having a cam A³, an eccentric A, a driver bar lifting cam A³, a driver bar Aº,
D

page_text: having at its lower end a driver, said driver being depressed by a lever A operated
upon by one end of a spring connected at its other end in a suitable hole of a
fixed disc A, the eccentric strap B, embracing the eccentric A* and slotted to
slide and rock on a stud B', the arm B2 pivottally mounted on the end of an
arm-on said eccentric strap-and provided at its lower end with a feeder and
cutter B3, the spring B connected with said arm B2 and the head, the nail
guide B having two slots for the reception of a plurality of string nails having
nails of different length, said guide being fast on one end of a sliding bar 136
having an arm 137 which is acted upon by a cam on the shaft A2, to place either
length of the said string nails in line with said feeder, and the shield B on
which the feeder slides up and down in operation, it meeting the head of a string
nail at the lower end of the shield and feeding and driving it into the stock through
a nose grasped in a block 1312, and the constantly running loose pulley 1313, the
fast pulleys B, and the starting device shown as a forked wedge 115 attached to
rod B and adapted to be pulled down to start the main shaft by the action of
the foot of the operator on a treadle, not shown, located at the floor, are and may
be all as common, this present invention not lying in said parts, except in details
to be described of the nose, and the operation of the cam A³ to raise and actuate
the horn.
The rod B is provided with a collar a, on which rests the lower end of a:
spiral spring a¹, and a washer a² lying on the top of said spring is acted upon by
a coupling shown as a U shaped foot a³, fast on a rod a', having a handle a by
which to turn it, said rod being mounted in the end of a lever a³, pivotted at a,
and having at its upper end a roller or other stud which is acted upon by the
cam A³.
When the machine is to be started the operator puts his foot on a treadle,
not shown, and depresses the rod B16, causing the wedge 1315 to force the fast and
loose pulleys in driving contact, and the wedge will continue to operate so long
as the operator holds the said rod down, and while the machine is running the
lever is actuated and the foot a³ of the coupling acting on the washer a²
depresses the spring a¹.
(Should, however, the operator release the rod B16 so that it may rise in usual
manner to unclutch the loose and fast pulleys, then the lever and its connected
foot act on the washer and let the rod 1316 rise to unclutch the said pulley to stop
the machine only when the smaller throw of the cam A³, as shown in Fig. 1, is
opposite the roller of the lever a, the usual driver bar depressing spring by its
action aiding in checking the timely rotation of the shaft to leave the roller in
the stated position with relation to the said cam.
In this way provision is made for stopping the machine when the horn is
released and down, for the said lever a at that time also acts to depress the horn
as will be described.
While the two pulleys are unclutched, should the operator desire to turn the
main shaft for any purpose, as for adjustments, the handle a* of the coupling
described may be turned to remove the foot a³ from above the washer, and then
the shaft A2 may be turned without the cam A³ acting to depress the wedge.
The lever A5 has at its inner side an ear which fits loosely over a rod b, the
underside of said ear resting on a spring b₁ supported on a washer b², the upper
side of said ear acting against a sleeve 63 adjusted as to its position on said rod
by a suitable nut 6, the adjustment of said sleeve on said rod determining the
normal upward position of the tip of the horn.
The lower end of the rod b is jointed to a lever 65 pivotted at 66, and having
its end entering a notch in the horn spindle 68, mounted loosely in a hub 69
fast on the standard A.
The outer or free end of this lever 65 is lifted by the lever a5, the spring b¹ and
rod b, when a nail is to be clinched on the horn to be described, and at such time,
the said lever. 65 constitutes an abutment for the horn, the only yielding being
that in the spring bl.

page_text: A spring c may act on lever 65 to depress the outer end of the said lever and
keep the roller at the end of the lever as against the cam A³.
The horn spindle is surrounded by a spring d which is strong enough to sub-
stantially counterbalance the weight of the horn d', the latter being mounted on
a pivot pin 2, held in ears of a head d³, clamped suitably on the upper end of
the horn spindle 68.
This horn has at its upper end a tip or anvil provided with a main clinching
cavity 2, and an auxiliary clinching cavity 3, the main clinching cavity serving
to clinch the nails which are driven into the sole except in the narrow toe, the
auxiliary cavity 3 in the smaller or pointed end of the anvil serving to receive
and clinch the nails which are driven into the narrow or sharp pointed end of
the toe.
To enable either of these cavities to be put into operative position, the horn
must be pivotted as shown.
This horn has a shoulder e, shown enlarged in Fig. 10, presenting two surfaces 4, 5,
against which may act the extremity of a pawl e mounted on an eccentric stud e³
screwed into the ears of the head ³.
The head has an adjustable forward stop f, shown as a screw against which
the horn acts, as in Fig. 7, when the main cavity is in working position, under
the nail driver, the pawl at such time acting against the face 5 of the shoulder e.
The rotation of the eccentric enables the position of the pawl el to be changed,
the said eccentric being normally so located that the pawl acting on the face 5
will keep the horn against the stop f.
The pawl e has a portion which is bored to receive a spring e³ which normally
holds the pawl up into its operative position.
When a shoe is on the horn and being nailed the operator keeps his hands on
the shoe, and when the nails are to be driven into the sole of a sharp pointed toe,
the operator draws the shoe and horn towards him, the spring eat such time
yielding and letting the end of the pawl pass from the face 5 onto the face 4 of
the shoulder e.
This change of position of the horn on its pivot puts the auxiliary cavity in
working position under the driver.
The horn may be turned down out of its operative position, and to do this the
pawl e will turned down by hand, and the down stop 6 will meet the pawl and
retain the horn in the position shown in Fig. 9.
It will be noticed that the horn is pivotted, on the spindle by a pivot ² located
at one side of the longitudinal centre of the hom spindle, and that the tip of
the horn is bent around so as to occupy when in its working position a position
substantially above the centre line of said spindle.
This horn may, however, be turned aside by the operator when for any reason
he desires to get access to the nose of the machine to enable him to temporarily
nail upon a last held in his hand or for other purposes.*
The nose clamped in the block B12 has a longitudinal passage through which
the headed end of the nail is driven by the driver, and said nose is cut away at
one side as shown in Fig. 5, to expose the nail passage, and one end of a suitable
spring g', connected to the block B12 by a screw g², acts on the nail moving in
said passage, as it is being driven, thus aiding in ensuring uniform driving of
the nails from the nose into the sole.
The horn may, if desired, be so adjusted as to leave either cavity in operative
position for any desired period.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
-
The improvements in or relating to machinery for inserting metallic fastenings
especially adapted for the manufacture of boots and shoes consisting of,
The usa with a harn enindle of a harn niratted thansen and provided at its

page_text: upper end with two clinching cavities, one being located nearer the end of the
tip of the horn than the other, either of said cavities being adapted to be put
into line with the nose of the machine through which the nail is driven into the
work supported on the horn, substantially as described.
2. The use with a horn spindle, of a horn pivotted thereon and provided at
its upper end with two clinching cavities, one being located nearer the end of the
tip of the horn than the other, either of said cavities being adapted to be put
into line with the nose of the machine through which the nail is driven into the
work supported on the horn, said horn having near its pivot, a shoulder, and a
locking pawl engaging said shoulder, substantially as described.
3. The use with a horn spindle, and a horn pivotted thereon and provided at
its upper end with two clinching cavities, one, being located nearer the end of
the tip of the horn than the other, either of said cavities being adapted to be put
into line with the nose of the machine through which the nail is
driven into the work supported on the horn, said horn having near
its pivot, a shoulder, and a locking pawl engaging said shoulder of a frame
carrying said pawl and a spring to normally hold said pawl pressed against said
shoulder, substantially as described.
4. The use with a horn spindle, and a horn pivotted thereon and provided on
its upper end with two clinching cavities, one being located nearer the end of the
tip of the horn than the other, either of said cavities being adapted to be put into
line with the nose of the machine through which the nail is driven into the
work supported on the horn, said horn having near its pivot a shoulder, and a
locking pawl engaging said shoulder, of a stop to align the horn so that the
bottom of its main cavity will be kept in line with the nose of the machine, sub-
stantially as described.
5. In a nailing machine, the following instrumentalities, viz-a rotating shaft
provided with a cam; a lever actuated by said cam; a horn spindle having a
shoulder; means to support said spindle; a horn carried by said spindle, a spring
co-operating with said horn spindle to substantially counterbalance the weight of
said horn; a lever adapted to engage the shoulder of the horn spindle; a con-
necting rod interposed between, said two levers; and a spring surrounding said
rod to enable the horn under the action of said lever to adapt itself to varying
thicknesses of material; said cam being shaped to actuate said devices and keep
the horn in its elevated position when a nail is being driven, substantially as
described.
6. In a nailing machine, the following instrumentalities, viz-a rotating shaft
provided with a cam; a lever actuated by said cam; a horn spindle having a
shoulder, means to support said spindle; a horn carried by said spindle; a lever
adapted to engage the shoulder of the horn spindle; a connecting rod interposed
between said two levers, a spring surrounding said connecting rod and supported at
one end by a nut thereon to adapt itself to varying thickness of material, com-
bined with an adjustable sleeve carried by said rod; said cam being shaped to
actuate said devices and keep the horn in its elevated position when a nail is
being driven, substantially as described.
7. The use with a horn spindle, and a homi pivotted thereon at one side of the
centre line of said spindle and provided with two shoulders near its pivotal points,
of a pawl which may engage either of said shoulders to operate, substantially as
described.
8. The use with a horn spindle, and a horn pivotted thereon at one side of the
centre line of said spindle and provided with two shoulders near its pivotal point,
of a pawl which may engage either of said shoulders, said pawl containing a
spring to keep its point pressed toward the shoulders of said horn, substantially
as described.
9. In a mailing machine, the use with a horn spindle having a horn pivotted
thereon at one side of the centre line of said horn spindle, and means to normally
act upon the lower end of said horn below its pivot to maintain, the tip of the horn

page_text: in nailing position, of a stop located above the pivotal point of said horn and
between said horn and the centre line of said horn spindle to determine the exact
position of the clinching cavity at the tip of the horn with relation to the path
of movement of the driver, substantially as described.
10. In a nailing machine, the use with a spindle, and a horn pivotted thereon
and provided with two clinching cavities, and having a two faced notch, of a
pawl engaging said notch, substantially as described.
11. In a nailing machine, the use with a spindle, and a horn pivotted thereon
and provided with two clinching cavities, and having a two faced notch, of a pawl
engaging said notch, and an eccentric to adjust the position of said pawl, sub-
stantially as described.
12. In a nailing machine, the use with a horn spindle having a shoulder, a
horn pivotted thereon, and a lever to engage said shoulder to lift said horn, of a
rotating shaft having a cam, a lever actuated by said cam, and a rod connecting
said two levers, said rod having a spring, and a sleeve and a nut to adjust it,
said lever being interposed between said spring and sleeve, substantially as
described.
13. In a machine for inserting nails into boots and shoes the following instru-
mentalities, viz: a rotatable shaft, a driver bar and its attached driver, means
carried by said shaft to operate said driver bar, a vertically movable horn or
work support normally occupying its lowest position when the machine is stopped,
a cam carried by said shaft, a lever actuated by said cam connections between
said horn and lever, a spring interposed between said connections and lever, said
spring being compressed by said lever as the horn is being lifted to thereby hold
the work up by a yielding pressure, said spring being relieved from its pressure
when the machine is stopped and the horn is in its lowest position, substantially
as described.
Dated the 2nd day of Antahan 1800
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.