Tube Rivets or Metal Fasteners for Machine Belts, and for Rivetting Flexible Substances Together.
Year: 1891

page_text: Date of Application, 13th Aug., 1891
Complete Specification Left, 11th May, 1892-Accepted, 11th June, 1892
PROVISIONAL SPECIFICATION.
Tube Rivets or Metal Fasteners for Machine Belts, and for
Rivetting Flexible Substances Together.
THOMAS HAMILTON PURVES 44 Pitt Street, Leith, Brassfinisher, do hereby
declare the nature of this invention to be as follows:-
To be made of copper, iron or brass tube, or other metal or alloy, which may be
brazed, solid drawn, or an open seam, from one sixteenth diameter upwards, cut
into short peices, each end of peice being sawn, or cut with one, two, or more
narrow slots, to allow ends so slotted to be turned down at right angles, after
passing through the belt, or other articles to be joined together, and to become
flush with said articles, on each side.
Or to be part solid in centre, being only bored at each end, deep enough, to
allow the slotted parts as mentioned above, to be turned down at right angles after
passing through the articles to be joined.
Dated this 19th day of August 1891
THOMAS HAMILTON PURVES.
COMPLETE SPECIFICATION.
Tube Rivets or Metal Fasteners for Machine Belts, and for
Rivetting Flexible Substances Together.
THOMAS HAMILTON PURVES, 44 Pitt Street, Leith, Brassfinisher, 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:
To be made of copper, iron or brass tube, or other metal or alloy, which may be
brazed, solid drawn, or an open seam, from one sixteenth diameter upwards, cut
into short peices each end of peice being sawn or cut with one, two or more slots,
to allow ends so slotted to be turned down at right angles, after passing through
the belt, or other article to be joined together and to, become flush with said
articles, on each side.
Or, to be part solid in centre being only bored at each end deep enough, to allow
the slotted parts, as mentioned above, to be turned down at right angles after
passing through the articles to be joined.
The tube or metal used to vary in thickness and diameter according to length of
rivet, so that they may be of sufficient strength to hold the joints of machine
belting or other substance together, and to be of different lengths as required for
said purpose.
The form of rivet can be wholly cylindric, being parallel from end to end, or
partly cylindric by being bell mouthed or tapered off a short distance at one or
both ends, for the purpose of being more easily turned down after passing through
the article to be joined, and also to keep the centre of rivet stronger.
Or to have a thin partition of metal at, or about centre of rivet, said partition
to be solid, or with hole through, leaving sufficient metal to strengthen the centre
of rivet, said rivet and partition to be produced by casting or moulding; or forging
from the solid metal rod, by punching holes while hot, at each end of the peice of
metal used, and into which the slots are made, or merely cut out of cylindrical
tubing, and tapered, or rounded at one or both ends by machinery.
The aforementioned slots, to be either parallel, or tapered towards the ends of
rivet, or rounded off at ends or corners of said slots, for better handling & working,
and also at sides of said slots.

page_text: These slots may be simply cut with a sharp pointed tool, or sawn, or punched, or
slotted, longitudinally in the rivet, and will be in proportion to length of rivet, the
ordinary depth being at or about one quarter inch.
The slots at each end may be either opposite to each other, or at right angles
with those at the opposite end, or may be put in at any point from being opposite
to each other, back to a right angle, and there may be more slots in one end than
in the other, the depth of these slots being in general about one quarter inch,
according to length of rivet.
The point end of rivet to be rounded off inside or outside, to allow an easy
entrance through the hole in the article to be joined or fastened together, the slots
at the point end, allowing said point to be compressed together, to form a tapered
point, to facilitate the entrance of the rivet, through the material or substance to
be joined together.
A. head is formed on the rivet by turning down sufficient metal at one end of
rivet, the slots already put in allowing the metal to spread outwards, and to be
pressed or hammered down to nearly right angles with the body or stem of rivet,
and may be made sharp at the shoulder, or rounded, as required, said head having,
one two or more divisions or sections according to the number of slots put in end
of tube forming the head & spreading out to nearly one quarter inch, or a little
larger or smaller as may be required, the end of tube or material forming the head
to be also rounded off outside or inside, for better handling & working, said head
to be formed during the manufacture of said rivet.
The tube rivet may be softened or annealed, or left hard as may be required;
the form to be either round, oval, square, or with the tube compressed or flattened
together forming two flat, or nearly flat sides.
No drawings accompany this Specification.
Having now particularly described & ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is with regard to novelty, viz. :
A tubular or cylindric rivet (or wholly or partly so) with slots in each end at
given intervals, one end to be formed as a head in the course of manufacture, and
the point end, to be turned down to resemble the head part, after passing through
the article to he joined, & to become flush therewith, on both sides.
Dated this 10th day of May 1892.
THOMAS HAMILTON PURVES.