Improvements in or applicable to Machines for Securing Tubular Rivets, Eyelets, and the like.
Year: 1891

page_text: Date of Application, 2nd Dec., 1891
Complete Specification Left, 2nd Sept., 1892-Accepted, 8th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Machines for Securing Tubular
Rivets, Eyelets, and the like.
I, GEORGE FREDERICK WILLIAMSON of Midland Foundry Wellingborough
in the County of Northampton Engineer and Iron Founder do hereby declare the
nature of this invention to be as follows:-
This invention relates to the construction and application to a suitable press of a
device consisting of spring closing dies arranged to be operated during the passage
of a tubular or other suitable form of rivet or eyelet therethrough in the operation
of applying rivets or eyelets to one or more thicknesses of leather or other material.
for joining, lacing or for other purposes.
I make the die in two parts each dependent from a semi tubular sleeve one of
such parts having guiding pieces thereon between which the other part is placed so
as to close one die towards the other in a manner to form when closed a suitable
receptacle shaped as hereinafter described to receive the tubular or other rivet or
eyelet to be driven and set by the press.
The semi circular sleeves from which the dies depend are slotted longitudinally
and are connected with the plunger of the press by screws. They are kept normally
in close contact, forming together a sleeve upon the plunger of the press by means
of a specially made flat spring consisting of a steel washer having diametrically
opposite ears bent down so as to embrace the two semi circular sleeves and grasp
their dependent parts which carry the opening dies.
I make the press in the usual way; the plunger may be provided with a punch
or formed at its lower end to act as a punch for driving the rivets or eyelets, being
carried in two guides with a coiled spring intervening to exert a pressure between
the lower guide and a projecting part upon the plunger so as to raise the plunger
to its normal position when the driving cam or lever is released. In addition to the
coil spring hereinbefore mentioned 1 provide another coil spring similarly placed
upon the plunger below the lower guide to exert a pressure between that guide
and the upper side of the flat spring which as hereinbefore described serves to keep
the two semi tubular sleeves in close contact. The object of the said coiled spring
is to keep the spring die device normally projected to its fullest extent upon the
plunger of the press the movement being limited by the length of the longitudinal
slots by which with screws the spring die device is carried upon the plunger of
the press.
The receptacle for a rivet or eyelet, formed by the spring die device has the
form of a countersunk hole leading to a cylindrical hole made of a diameter about
equal to that of the rivets or eyelets to be employed.
The operation of the machine is as follows:-
A suitable rivet or eyelet is placed in the receptacle of the dies standing
perpendicularly in the cylindrical bore, its head (if it be a rivet) or its flange (if it
be an eyelet) resting in the countersunk opening horizontally. The plunger
being driven down carries forward the spring die device until it rests upon the
material placed over the anvil of the press to receive the rivet or eyelet. At
this stage the further descent of the plunger alone proceeds, the slots in the
semi tubular sleeves providing for this movement within the said tubular sleeve
without disturbing the spring die device until the punch comes in contact with
the rivet head or the eyelet flange as the case may be. The further descent of
the plunger then drives the rivet or eyelet, opening the spring die device gradually
as the rivet or eyelet passes therethrough in a manner to be guided vertically
through the material to meet the anvil so as to evenly upset the forward end of the
rivet or eyelet as desired.

page_text: Upon the return stroke of the plunger the pressure of the coil spring below the
lower guide keeps the spring die device in contact with the riveted or eyeleted
material while the punch retires from between the dies which then become closed
by the flat spring, and the spring die device then still remains in contact with the
said material until the screws projecting from the plunger have travelled through
the whole length of the longitudinal slots of the semi tubular sleeves. Any further
upward travel of the plunger carries the spring dic device with it and thus it is
lifted to a convenient height from the material to allow it to be moved according
to the position in which the next rivet or eyelet is to be placed.
Dated this 2nd day of Dramban 1001
AYRTON & THOMAS.
COMPLETE SPECIFICATION.
Improvements in or applicable to Machines for Securing Tubular
Rivets, Eyelets, and the like.
1, GEORGE FREDERICK WILLIAMSON of Midland Foundry, Wellingborough
in the County of Northampton Engineer and Iron Founder, 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 the construction and application to a suitable press of a
device consisting of spring closing dies arranged to be operated during the passage
of a tubular or other suitable form of rivet, eyelet or hook therethrough in the
operation of applying rivets or eyelets to one or more thicknesses of leather or
other material for joining, lacing or for other purposes.
In the accompanying sheet of illustrative drawings,
1
Fig. represents a sectional side elevation and Fig. 2 a sectional front elevation
of a machine constructed according to my invention.
I make the die in two parts a each dependent from a semitubular sleeve b one of
such parts having guiding pieces c thereon between which the other part is placed
so as to close one die towards the other in a manner to form when closed a suitable
receptacle shaped as shown to receive the tubular or other rivet or eyelet to be
driven and set by the press.
The semitubular sleeves b are connected to the plunger d by screws e working in
lougitudinal slots fand are kept normally in close contact to form a sleeve upon
the plunger by means of the springs g which form a part with the washer h and
press the two halves of the sleeve together as is clearly shown.
I make the press in the usual way: the plunger d which is provided with a punch i
for driving the rivets or eyelets is carried in two guides l m with a coil spring-n
intervening to exert a pressure between the lower guide and a projecting 'part o
upon the plunger so as to raise it to its normal position when the driving cam or
lever pis released. In addition to the coil spring hereinbefore mentioned I
provide another coil spring y similarly placed upon the plunger 'below the lower
guide to exert a pressure between that guide and the upper side h of the flat
springs which as hereinbefore described serves to keep the 'two 'semitubular
sleeves b in close contact. The object of this latter coiled spring is to keep the
spring die device normally projected to its fullest extent upon the plunger of the
press the movement being limited by the length of the longitudinal slots f by which
with the screws e the spring die device is carried upon the plunger d of the press.
The receptacle for a rivet or eyelet, formed by the spring die device, has the
form of a countersunk hole leading to a cylindrical hole made of a diameter about
equal to that of the rivets or eyelets to be employed.
The operation of the machine is as follows:-
A suitable rivet or eyelet is placed in the receptacle of the dies standing
perpendicularly in the cylindrical bore its head (if it be a rivet) or its 'flange (if it
be an eyelet) resting in the countersunk opening horizontally. The plunger a

page_text: being driven down carries forward the spring die device until it rests upon the
material placed over the anvils of the press to receive the rivet or eyelet. At this
stage the further descent of the plunger alone proceeds the slots in the two
semitubular sleeves b providing for this movement within the said tubular sleeve
without disturbing the spring die device until the punch i comes in contact with the
rivet head or the eyelet flange as the case may be. The further descent of the
plunger then drives the rivet or eyelet opening the spring die device gradually as
the rivet or eyelet passes therethrough in a manner to be guided vertically through
the material to meet the anvil so as to evenly upset the forward end of the rivet
or eyelet as desired. Upon the return stroke of the plunger, the pressure of the
coil spring below the lower guide keeps the spring die device in contact with the
riveted or eyeleted material while the punch retires from between the dies which
are then closed by the flat springs g and the spring die device then still remains in
contact with the said material until the screws e projecting from the plunger have
travelled through the whole length of the longitudinal slots of the semitubular
sleeves b. Any further upward travel of the plunger carries the spring die device
with it and thus it is lifted to a convenient height from the material to allow it to
be moved according to the position in which the next rivet or eyelet is to be placed.
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 :-
1. In a machine for securing tubular rivets, eyelets, and the like constructing the
device for guiding the eyelets in two parts normally held together by springs
substantially as described."
2. In a machine for securing tubular rivets eyelets and the like the arrangement
aud construction of the rivet guiding device substantially as described with reference
to the drawings.
Dated this 2nd day of September 1892.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.