Year: 1888

page_text: I, HENRY HARINGTON LEIGH, Fel. Inst. P.A., Assoc. M. Inst. C.E., practising as
Phillips & Leigh, at No. 22, Southampton Buildings, Chancery Lane, in the County
of Middlesex, Engineer and Patent Agent, do hereby declare the nature of this.
invention to be as follows:-
This invention relates to improvements in machines for making nails, and more
especially to an improved machine for jumping the heads of horse-nails, and its
objects are to provide mechanisms for giving the oscillating dio a straight downward
movement, and for feeding the nail-blanks during the jumping process.
A double armed oscillating lever forming the jumping-head is pivotted in a
suitable manner on the bed plate of the machine. The movement of the said
oscillating lever is taken from the main shaft of the machine by means of a can on
the shaft and a returning spring against which cam one arm of the said oscillating
lever bears.
The opposite arm of the oscillating lever is provided with the jumping die fastened
by means of a clamping device to the die-holder pivotted in a suitable manner at
the head of the said oscillating lever.
The nail blanks are fed by hand through an upright straight tube past the jumping
kept by the action of a spring against a cam on
head pivoited to a sliding arm which
the main-shaft of the machine. After leaving the feeding tube the nail-blank is
caught by two pairs of jaws one pair of which is arranged in or on a sliding piece
also kept by the action of a spring against a cam on the main shaft.
At the beginning of the jumping process, the point of the nail rests on the top of
the jaws arranged in or on the said sliding piece. Whilst the latter advances towards
the pair of stationary jaws, the lower end of the feeding tube is moved by its actuating
sliding arm in such a manner that at a certain given position of the moving parts the

page_text: lowest nail-blank in the feeding tube will drop and will be caught by the jaws, while
the said feeding tube is forced to return into its former position by the action of the
spring above mentioned. The jaws are closed tight and the arm of the said oscillating
lever carrying the die-holder will be caused to finish its downward movement by the
action of the respective cam on the main-shaft.
As the oscillating or jumping lever swings about its pivot, the die holder fixed to
one arm of the said lever, is caused to describe part of a circle, and the die would not
press on the nail head in the normal direction unless the die-holder were moved in a
direction independent of that of the said oscillating lever. This independent motion is
effected in the following manner.
The movable die-holder actuated by a spring is provided with a projection or finger
that will bear against a projection arranged in vertical position on the bed-plate as
soon as the die has reached the vertical position above the nail blank. While the
respective arm of the oscillating lever continues its downward motion the die-holder
with the die is guided by the above mentioned projections and the die is thereby
caused to move vertically and to press the head of the nail exactly in the direction of
its axis.
While the jumping process is going on the point of the nail blank is received by
the die of an arm attached to a rocking shaft underneath the jaws which hold the
nail blank during the jumping process. This shaft receives its rocking motion also
from a cam on the main shaft by means of a suitable arm connected to the rocking
shaft. As soon as the arm of the jumping head commences its upward motion the arm
with the lower die on the rocking shaft swings sidewards under the nail and as the
jaws have opened in the mean time the head nail-blank will now drop into an outside
leading channel or any suitable receptacle underneath the machine, whereupon the
jaws are ready to receive a new nail blank from the tube and the operation of the
imachine as above described is repeated.
By the arrangement of the feeding tube passing through the jumping head a nearly
vertical position of the same is obtained, whereby the nail blanks may drop by their
own weight, thus doing away with the supplementary feeding mechanism commonly
used with this class of machinery.
All surfaces used for clamping and jumping the blanks may be fastened adjustably
to their seats in order to allow for wear and tear being taken up, for this purpose
they are kept in their proper positions by means of set screws.
Dated this 28th day of Anri! 1888

page_text: 1, HENRY HARINGTON LEIGH, Fel. Inst. P.A., Assoc. M. Inst. C.E., practising as
Phillips & Leigh, of No. 22, Southampton Buildings, Chancery Lane, in the County
of Middlesex, Engineer and 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 :-
.
This invention relates to improvements in machines for making nails, and more
especially to an improved machine for jumping the heads of horse-shoe nails.
Its objects are to provide mechanisms for giving the oscillating jumping die a
straight downward movement, and for feeding the nail blanks during the jumping
process.
In order that this invention may be more clearly understood, I will describe it
with reference to the accompanying drawing, in which
Fig. 1 is a front elevation of the machine
;
Fig. 2 is a cross section taken on the line -, of the former figure.
Fig. 3 is a top view of Fig. 2 after the feeding table has been taken off.
Fig. 4 is a top view of the arrangement of the jaws adapted to clamp the nail-blank
during the jumping process; while
Figs. 5, 6 and 7 show the nail blank and the principal actuating mechanism at their
different stages and positions during the jumping process.
Figs. 8 and 9 represent the jumping die and die-holder, on an enlarged scale; and
Fig. 10 is a top view of the feed-actuating slide-piece.
Similar letters refer to similar parts throughout the several figures.
The double-armed oscillating lever ab supporting the jumping-die is journalled
with its pivots c by the brackets c¹ on the bed-plate of the machine. The motion of
this oscillating lever ab is effected from the main shaft w of the machine by the
action of a spring f¹ and a cam a² on the shaft, upon which cam the arm a of the
oscillating lever bears through the anti-friction rollers a¹. At its opposite end,
the lever a b is suitably enlarged for the reception of the vibrating die-holder g, which
is supported by its pivots within the head 6 of the oscillating lever. The die d
is rigidly secured in the die-holder by means of a jaw g², traverse g³, and
Screws g.
The nail-blanks are fed by hand from the table through straight tube h which
passes the head of the oscillating lever a b, and is pivotted to a sliding arm i which
s kept in contact through the antifriction roller i¹ by the action of a spring with a
cam on the main shaft 10 of the machine. After leaving the feeding tube h, the
ail-blank is caught by two pairs of jaws & ¹ and k k³, the latter pair carried by a
liding piece m, which is kept in contact through its antifriction rollers m' by the
ction of the spring, fixed by one end to an arm m³ of the slide and by the other to
he bed-plate, against the cam m² on the shaft w.
At the beginning of the jumping process, the point of the nail blank rests on the
op of the jaws which are fixed to the sliding piece m (Fig. 5). While the
atter advances towards the stationary jaws kk', the lower end of the feeding tube h
moved by its actuating sliding arm i in such a manner, that at a certain given
osition of the moving parts, the lowest nail blank in the feeding tube h will drop,
nd be caught between the jaws kk' and k³, while the said feeding tube is caused

page_text: to return into its former position, by the action of the spring. The jaws are then
closed tightly, and the arm b of the jumping lever carrying the die-holder will
finish its downward movement under the action of the cam a. so that the parts
mentioned will occupy the respective positions illustrated in Fig. 6.
As the jumping lever ab swings upon its pivots c, the die-holder
which is fixed
to the head, is caused to describe a part of a circle; and, therefore, the die d would
not press on the nail-head in a normal direction, if the dio-holder did not receive
a motion different from, and independent of, that of the jumping lever a
To effect this, the movable die-holder g, against which bears a spring f, is provided
with a projection that will engage with a finger p' of an adjustable slide-piece p,
as soon as the die d has reached the vertical position above the nail-blank. (Fig. 6).
While however the arm b of the jumping lever continues its downward motion, the
die-holder g with the die d is guided by the projections p² and and the spring f, in
such a manner that the die is caused to descend vertically, and to press on the
nail exactly in the direction of its axis, (Fig. 7). thus producing a true shaped. nail-
head in accordance with the form of the jaws and ³, which are adapted to hold
the nail-blank rigidly during the jumping process.
During the process of jumping, the point of the nail-blank is received by the
die n of an arm n attached to a rocking shaft underneath the jaws which hold
the nail blank. To this shaft a rocking motion is imparted through the arm n² from
the cam n³ on the main shaft, against which the arm n² bears by reason of its dead
weight, or under the action of a spring.
As soon as the arm b of the jumping lever commences its upward motion, the arm n
is caused to swing sideways under the nail, and as the jaws have opened in the
mean time, the headed nail-blank will now drop into a shoot leading to the outside of
the machine, or into any suitable receptacle underneath the bed plate. At this point,
the jaws are adapted to receive again a new nail-blank from the feeding-tube ; and
the operation of the machine as lierebefore described commences again.
By the arrangement of the feeding tube h passing the head of the jumping lever,
a nearly vertical position of the same is obtained, whereby the nail-blanks may drop
by their own weight, thus doing away with any other feeding mechanism as commonly
used with this class of machinery.
All surfaces used for clamping, supporting, and jumping the nail blanks, may be
adjustably attached to their bearing in order to allow of the wear and tear being
provided for, and are therefore fitted to their respective seats by means of set
Screws.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I wish it to be understood
that what I desire to claim is :-
1. In a machine for making nails, the combination of the oscillating lever a b
with the die-holder g pivotted to the former and provided with a projection or finger
that engages with a projection p¹ of the bed-plate, substantially as and for the purpose
specified.
-
2. In a machine for making nails, the combination of the oscillating lever a b with
the straight feeding tube h passing the head band connected to a reciprocating slide-
piece i, substantially as and for the purpose set forth.
3. The manufacture of nails by means of a machine containing the improvements
substantially as herebefore described and claimed.
Dated this 18th day of January 1889.
HENRY H. LEIGH.