Year: 1888

page_text: Date of Application, 31st Aug., 1888
Complete Specification Left, 24th Nov., 1888
Complete Specification Accepted, 31st Dec., 1888
RESERVE CO
I, ALFRED OWEN GROVE of 46 Caversham Road Reading in the County of Berks,
Boot and Shoe Manufacturer do hereby declare the nature of this invention to be as
follows:-
This invention consists of a rivet or nail having two shanks or tapered ends
connected to the same head or centre piece, one end forming a continuation of the
other, and being in line with it.
The centro or enlarged part of the rivet may be of oval section or may resemble a
circular wafer with small concs at the centre of each disc where the shanks are
connected to it, or it may be square or of any preferred configuration. This centre
part forms a stop to the pointed end to prevent its being forced into the work beyond
the required distance.
In shoemaking for which my duplex rivot is specially designed great discomfort is
often caused by nails or rivets penetrating too far into the inside of the hoot.
My invention will effectually prevent this while it allows repairs to be conveniently
executed or new work to be strongly fastened together.
One of the tapered shanks must be sharp for penetration, but the other can be made
with its extremity blunt or chissel shapo for driving.
This however is not absolutely essential as a hollow punch, or rivet sot, could be
used to drive in the rivet if preferred.
My duplex rivets or nails are applicable for many purposes besides shoemaking.
They can be made of various sizes and of iron or other metal.
1 th: 91nt dove Avast 1888.
S. S. BROMHEAD,
97, Newgate Street, E.C.
Patent Agent.

page_text: 1, ALFRED OWEN GROVE of 46 Caversham Road Reading in the County of
Berkshire, Boot and Shoe Manufacturer do hereby declare the nature of this invon-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :--
This invention consists of a rivet or nail having two shanks or ends connected to
the same head or centrepiece, one end forming a continuation of the other and being
in a line with it.
In describing my improved rivet or nail in my provisional specification, I pointed
out that it was especially designed for shoemaking and I wish to add that it is
particularly useful for attaching out soles or other pieces of leather to the insole or
welt of the boot. In shoemaking or shoe repairing its value mainly consists in the
fact that it cannot work inwards so as to come in contact with the foot as ordinary
nails or rivets often do.
In describing its form in the provisional specification, I mentioned that the centre
or head of the rivet might be oval, or might resemble a circular wafer with cones at
the centre of the disc, where the shanks are connected to it. I find these cones are
not necessary and not so good as a rib or wob, as they cause a needless displacement
of the leather. I therefore prefer to employ for the head a plain wafer-like disc or
plate, with or without a web on one or on both sides. The head may be round, oval,
square or of any other preferred configuration. The shanks may be round, half
round, square, three square, or of any preferred section. One of the Shanks must be
taper or chissel pointed, but the other may be left blunt for rivetting if preferred.
They can be forged, cast, pressed, or cut as preferred. I also employ for cheapnoss
another form of head in which the centre flange is formed of one or two flaps or
wings as shewn in Fig. 4. This enables the entire rivet to be cut or pressed out of a
piece of soft steel or other flat sheet metal, the flap or flaps being afterwards bent or
twisted into a position at right angles to the points. In the accompanying drawings
Fig. 1. shews an elevation and section of one form of my duplox rivet, in which
a head of disc form with two shanks of equal length are employed one being pointed
and the other blunt.
In Fig. 2 a rivet is shown in elevation and section having a flat head and pointed
shanks of unequal length.
Fig. 3 shews an elevation and plan of a rivet in which a light web is attached to
the shank and head for greater strength. This web is similar to that formed on
common cut tacks. It is especially useful in the lighter sizes.
Fig. 4 shows the pressed form of rivet before described, the two flaps being first
shown in plan flat with the points, as cut or stamped by machine and then in elevation,
bent or twisted, transverse fashion, so as to form the head. A is the head, B the
blunt shank, C the pointed shank, D the web, E the wing or flap.

page_text: 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,
A duplex rivet or nail for uniting leather and like substances, having two shanks,
one or both pointed, and a common head or centre, the said head being of any
preferred configuration and with or without a web, or rib as herein described and
set forth.
S. S. BROMHEAD,
97, Newgate Street, E.C.,
Patent Agent.