Year: 1894

page_text: Date of Application, 7th Dec., 1894-Accepted, 7th Dec., 1895

page_text: .
screw m² whereby the reciprocation of the carriage and throat h, d, and thus the
length of wire necessary for forming the nail head can be regulated.
When the carriage advances the wire passes through the throat o (see
Sheet IV) screwed into the carrier p which latter is furnished with an adjustable
screw p and a set screw pl. As shown in Figs. 1 & 2, the throat carrier p by
means of the screw pl may be adjusted so as to advance more or less and thus
bend the wire accordingly which movement determines the length of the shank.
From
The upper end of the wire rests against a die bit which is adjustable in the die
carrier q, and has at its outer end a small vertical groove for the passage of the
wire. Against the die bit carrier q are rendered adjustable the knives r.
Figs. 1 & 3 will be clearly seen that the more the die bit in the said carrier is set
in advance the greater will be the amount of metal cut from the wire by the
knives and thus the thickness of the nail shank accordingly. The size of the nail
blank is thus regulated by the said die bit.
The knives r form two sides of the nail simultaneously; after the knife on the
left has pushed back that on the right, the wire is pressed against the edge of the
vertical groove in the die bit carrier which shapes the nail blank, as shown in
Fig. 4 and in Fig. 1" by letter a". The part thus cut is much longer than if the
wire had been cut in a vertical position (see particularly Fig. 1).
The movable part of the two nail blank carrier z, z closes when the left knife
pushes back the right one in such a manner that the part reserved for the formation
of the head, passing the die carrier y, will become located between the die bits E,G,
before the knives separate. The nail blank cut on three sides, is brought by the
carrier, between the dies y", y, where the fourth side is formed as follows;-
The wire employed is much thicker than the nail shank formed. After three
sides have been formed the fourth side is formed by a surface slightly convex
(see Fig. 4). The nail blank is carried between the bits E, G, to the dies y", y",
and before being released has imparted thereby an eighth of a turn so as to be
between the dies y", y", conform with its grooves which then get hold of and press
it the moment the hammer falls which pressure forms the head and also the fourth
side of the nail.
The knives are fixed to slides s moving between guides t and actuated by means
of levers u, u, the left knife being attached directly to the lever u and the right
knife by means of a stock j", whilst the levers 7, are pivoted by brackets u", u",
to the frame of the machine.
in
The upper ends of the levers u,n', by means of bolts y & y', are furnished
with anti-friction bowls e, a, && running in the grooves and & v
on the side of the cams & respectively, which latter actuate the levers ", u².
For the purpose of importing the hecary Interal motion to the knives r, r when
forming the third side on the mail shank the side of the com is formed with a
larger throw than that of the cam. The dies, Fig 1 & 1, are in
stocks being stationery end movable with the knife le
:
Who said
carrier is formed in two parts, one of which = in tixed and the other al
made relatively movable, see Fig. 2, and which closes when the third side is
being cut on the nail blank and holds the mail securely on being forced against
the die bit y until the knives 7,7, open again. The nail blank carrier,
mounted upon a reciprocal table a', one end of which is supported by and guided
on a plate b by means of a projection engaging in a slot formel in the table a
whilst the other end is pivoted to a slide diurnished with an abutment screw d".
The plate is furnished with an abutment screw at each end whereby the
carrier z, can be adjusted to the left or right as may be required. Reciprocal
motion is imparted to the table a¹ by means of an eccentric secured upon the
driving shaft g', the eccentric rod e' having a slotted end engaging a stud ell on the
one end of a rocking lever h', pivoted to the frame of the machine, the other end
of which lever being connected to the table a¹ by means of a rod 1. The stroke
of the table a' can be varied by means of two screws employed on the rod e¹
against which the stud e¹¹ on the rocking lever is timed to abut.

page_text: After the nail blank has arrived between the dies y", y" they are closed by the
action of the lever . At the same time the cam secured upon the driving
shaft lifts a hammer guided in the brackets secured to plates g' bolted to
the frame of the machine. The hammer is under the influence of a spring m
which on the cam leaving the hammer causes it to drop and form the head on
the nail blank. The die y connected to the lever u' is then caused to recede,
whilst a lever o, Figs. 2 & 3, which is acted upon by the side of the cam r, by
means of the rod p', oscillates a shaft oll carrying a rod n' adapted to raise and
thereby remove the uail made, out of the dies y", y". The plates
rendered laterally adjustable by means of screws whilst the bolts
retain the same in position on the frame.
may be
serve to
Figs. 4, 5 & 5ª represent a modification of the nail blank carrier of the machine,
the movable part 2 of which is provided at its back extremity with a trunnion A
on which is secured, by means of a pin C, the socket B, the latter receiving the
rod which operates the aforesaid carrier. The other extremity of the movable
carrier part Z' is slotted and receives a slide D furnished with the die bit E.
When the carrier moves forward the slide D is timed to abut against the screw
and rebound a few millimetres, whilst the die bit G remains stationary for the
purpose of causing the die bit E to engage and impart to the nail blank an eighth
of a turn. The nail blank is then positioned square relative to the grooves of
the dies y, y¹ between which it is pressed the moment the hammer k¹ drops to
form the head.
A spring suitably fixed pushes the slide D into its normal position after which
the carrier recedes.
In this form of machine the wire reel is employed in a different position, viz. in
arrear of the wire instead of in front.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim, is-
"In a machine for the manufacture of cut and hollow beaded nails."
1st. In combination, a shaft, carrying a fast and loose pulley, the fly wheel, two.
depressing cams, a cam for operating the hammer, the eccentric which actuates the
nail blank carrier and the eccentric which moves the carriage feeding the wire, all
substantially as and for the purpose set forth.
2nd. In combination, the nail blank carrier, the adjustable die bit, the two
depression cams which open and close the knives and dies, the stock on the
right which holds one of the knives and one of the dies y, all substantially as
set forth.
Dated this 6th day of December 1894.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.