Improvements in Metallic Rivets.
Year: 1892

page_text: Date of Application, 11th May, 1892
Complete Specification Left, 11th Feb., 1893-Accepted, 25th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Metallic Rivets.
I, JUDSON LEVATOR. THOMSON of The Whitecross Company's Works,
Warrington, Lancashire, Manufacturer do hereby declare the nature of this
invention to be as follows:-
This invention relates to that class of rivet which is adapted for use with
leather or like work, and which can be driven through any ordinary material
without the necessity of first cutting or punching a rivet hole therein.
According to this invention the rivet is formed from the wire or rod by making
the desired shape of head at one end and cutting out or forming a wedge shaped
opening from the other end longitudinally with the length of the rivet to a point
slightly beneath the head. Each leg or prong of the bifurcated rivet thus formed
has an internal flat face, and external rounded face, and tapers in width and
thickness from base to outer end, which may if desired be slightly chisel faced or
given a wedge shape in order to permit of ready penetration through the goods
D
31
لبعد
1
1000
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London, Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Metallic Rivets.
I, JUDSON LEVATOR THOMSON of the Whitecross Company's Works,
Warrington, Lancashire, Manufacturer, 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 that class of rivet which is adapted for use with leather
or like work, and which can be driven through any ordinary material without the
necessity of first cutting or punching a rivet hole therein.
In order that the invention may be clearly understood reference is made to the
accompanying drawings in which
Figure 1 is a perspective view of a rivet, and Figure 2 a view in elevation.
According to this invention the rivet is formed from the wire or rod by making
the desired shape of head a at one end and cutting out or forming a wedge shaped
opening from the other end longitudinally with the length of the rivet to a point
slightly beneath the head. Each leg or prong of the bifurcated rivet thus formed
has an internal flat face b, and external rounded face c, and tapers in width and
thickness from base to outer end d which may if desired be slightly chisel faced or
given a wedge shape in order to permit of ready penetration through the goods.
One of the advantages of the rivet so formed is that when being driven into
leather or the like, the tendency of the material to bend the prongs inward is
counteracted by the pressure of the material between the prongs which acts as a
wedge or filling. A further advantage is that by forming the prongs with
substantially a semicircular outer face and a flat inner surface, the necessary
strength of prong can be secured, and the liability to accidental or premature
bending as frequently found with rivets with flat inner and outer faces is almost
entirely avoided.

page_text: 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 :-
The improved metallic rivet provided with tapered prongs having rounded
outer, and flat inner faces substantially as described.
Dated this 11th day of February. 1893.
PHILIP M. JUSTICE, Fel. Chart. Inst. P.A.,
55 & 56, Chancery Lane, London, Agent for the Applicant.