IMPROVEMENTS IN MACHINERY FOR MAKING EYELETS
Year: 1871

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LETTERS PATENT to Alexander Melville Clark, of 53, Chancery Lane,
in the County of Middlesex, Patent Agent, for the Invention of
"IMPROVEMENTS IN MACHINERY FOR MAKING EYELETS."-A communi-
cation from abroad by Henry Norman Smith, Benjamin Franklin
Carver, and Charles William McCune, all of the City, County, and
State of Nam Vaul Tida
Sealed the 18th July 1871, and dated the 30th May 1871.
COMPLETE SPECIFICATION filed by the said Alexander Melville Clark
at the Office of the Commissioners of Patents, with his Petition,
on the 30th May 1871, pursuant to the 9th Section of the Patent
Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALEXANDER
MELVILLE CLARK, of 53, Chancery Lane, in the County of Middlesex,
Patent Agent, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS IN
MACHINERY FOR MAKING EYELETS," and have petitioned Her Majesty to
grant unto me, my executors, administrators, and assigns, Her Royal
Letters Patent for the same, and have made solemn Declaration that it
has been communicated to, me from abroad by Henry Norman Smith,

page_text: lever I, pivoted as at d, a horizontal sliding die bar J having a die e
near its forward end also carrying a horizontal driver K. The other
grooved cam E operates through a lever L pivoted as at f a knife or
shearer M. The revolving stud F serves in conjunction with a spring N
to actuate a lever O, which through a pawl 9 acting on a ratchet wheel h
effects the feed or draught of the strip of metal i, out of which the
eyelets are made through the machine by means of gear rolls P, P.
The bevel wheel G gears with a bevel wheel Q to give rotary motion to a
vertical shaft R on which is a cam S, that in conjunction with a spring k
imparts a horizontal reciprocating motion and temporary lifting action
to an eyelet feeding and removing bar or device T; this is in slotted
connection with or suspension on a pivot is formed with a fork m
arranged to straddle, the vertical shaft R rests on the rim of the cam S,
and is provided with a stud n that gears with the inside of said cam at
its ring or periphery, likewise is formed' or provided with a stud o at
its forward end. The shaft R also carries a cam U, that in conjunction
with a spring p operates a lever V for actuating a discharger q to a
die 8, within which the punch of former c works. A discharger t is
also provided the die e, which discharger is operated by its moving over
an incline W in or by the sliding action of the bar J, which latter
reciprocates through a suitably faced block X formed with a die u,
and on to the face of which block the blank a is delivered from a
die o as it is stamped out of the strip i by the action of the punch a.
With the exception of the punches or formers a, b, and c, the other
immediately pertaining devices just described, are for the most part or
wholly intermittent and timed to operate in succession or regular order
as will now be explained in referring to the operation of the machine,
which timely action is secured by a proper construction of the several
cams and other parts.
0
The operation is as follows:-The strip of brass which may be
wrapped on a reel or other suitable device has its loose end passed over
the die and entered between the rolls P, P, when the machine is set
going, after which the action is automatic, and does not necessarily
require the presence of an attendant. The feed established by these
rolls P, P, being intermittent, the punch block H in coming down
causes during each successive feed the punch a to stamp or pierce out
a blank in the form of a flat disc a', which is deposited on the face of
the block X. The punch block H then rises or recedes, and in due

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course the sliding die bar J comes forward and causes its horizontal
driver K to push the blank a' over the preparatory cupping die u, when
the die bar J recedes and the punch 6 comes down and forces the blank
through the fixed preparatory die u into the further or secondary cupping
die e of the bar J, the punch a simultaneously stamping out a new
blank, the after operation on which and on each blank in succession is
.the same.
In the next advance stroke of the bar J the cupped blank a³
is carried forward out of the block X, and in such forward movement
is forced out of the die e by the action of the discharger t, in or by its
travel up the incline W. A pause then ensues in the action of the die
bar J, during which the removing bar T advances and slightly rising
and afterward falling at its front end by the combined action of an
.incline ม in the cam S, and the spring & causes the stud o to enter the
cupped blank a³, and in the receding motion of the bar T to draw it over
or into the die 8, when the stud o moves forward out of the way, and
the punch c comes down, and forces said cupped blank into the die 8,
which further forms and shapes it. The knife or shearer M then makes
a rapid stroke backward and forward, cutting off the closed end of the
'cupped blank which slightly protrudes through the dies. After this
the knife M having retired, and punch c moved out of the die 8, the
discharger q is made to rise and force the finished eyelet a' out of the
die 8, which eyelet will be swept off or delivered from off the face of
said die by the next back stroke of the stud o as it conveys a succeeding
cupped blank to the die 8.
Figures 4, 5, 6, and 7, represent the eyelet in its several stages of
manufacture. Thus a shows the blank as it is formed in the die v; a² as
it is shaped by the preparatory die u; a³ as it is formed in the dies e
From
and 8; and a' as it is delivered a finished eyelet from the die 8.
this description it will be seen that all annealing may be dispensed with,
and that the eyelets are produced in a rapid and automatical manner,
without being drawn out or thinned off at their bottom ends, as is the
case by the usual method of punching them, and which causes them
to split when set or flattened down in the work to which they are applied,
and which is avoided by this mode of making them, the punch or
punches having no such action on the blank, and the knife in shearing
off the closed end of the cupped blank leaving a square or thick end
of uniform solidity with the body of the eyelet, or thereabouts, and of a
better shape or finish.

page_text: Having described the nature of the Invention and the manner of
performing the same, I declare that what I claim as the Invention to be
secured by Letters Patent is,-
1st. The combination in an eyelet machine of a stationary die, a
corresponding punch for cutting out the planchets, an intermittingly
sliding die, and a forming punch corresponding thereto for roughly
shaping the eyelet, a stationary die and a forming punch corresponding
thereto for completing the form of the eyelet, and a device for cutting
off the closed end of the eyelet, the combination being and operating
substantially as described.
2ndly. The combination of the several dies specified in the foregoing
clause, with mechanism for transferring the planchet to the first forming
die and mechanism for transferring the partly formed eyelet from said
first forming die to the last or finishing die, the combination being and
operating substantially as described.
3rdly. The combination of the former 6 with the preparatory cupping
die u, and secondary cupping die e in the intermittently reciprocating
bar J substantially as described.
4thly. The discharger t and incline W in combination with the sliding
bar J and die e formed therein essentially as herein set forth.
5thly. The sliding die e and stationary die s in combination with
the driver K. and removing device T substantially as described.
6thly. The sliding die e, discharger t, and die s in combination with
the removing device T, and cutter M, substantially as described.
7thly. The combination of the dischargers t and q, dies e and 8,
punch c, removing device T, and cutter M substantially as described.
In witness whereof, I, the said Alexander Melville Clark, have here-
unto set my hand and seal, this Thirtieth day of May, in the
year of our Lord One thousand eight hundred and seventy-one.
Witness,
JAS. O. DEWEY,
53, Chancery Lane.
A. M. CLARK. (L.S.)