Year: 1887

page_text: Date of Application, 25th Feb., 1887.
Specification Accepted, 19th Apr., 1887.
I HENRY HARRIS LAKE of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings in the County of Middlesex, 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:-
My invention relates to improvements in Rivets.
The object of my invention is to provide a perforative tubular flanged rivet, or
fastener, one end of which may be easily forced through two or more sheets of paper
or other yielding material, and headed down upon the material to hold the sheets
together.
'
My invention consists in providing a new article of manufacture consisting of a
tubular rivet closed at its perforative end, and open at the other end, the open end
being provided with a retaining flange.
Fig. 1 of the drawings is a side elevation of my improved rivet.
Fig. 2 is a central vertical section of same.
Fig. 3 is a vertical central section showing the rivet pressed through, and headed
down upon several sheets of paper, in position to hold them together.
Fig. 4 is a horizontal section taken at broken line - in Fig. 1.
Fig. 5 is a side elevation of an interiorly fitting punch, for forcing the rivet through
the sheets of material to be fastened together, the relative position of the rivet, being
shown by dotted lines.
Fig. 6 is a side elevation of the hammer- for heading down the point of the rivet,
upon the material.
Fig. 7 is a plan view of the female die.
Fig. 8 is a top plan view of a modified form of rivet.
Fia is a side elevation of rivet in Fio 7

page_text: Fig. 10 is a plan view of sheet metal stamped out in proper shape to form the
rivet shown in Figs. 7 and 8. A, is the rivet which is hollow or, tubular.
The tube is closed at the upper end and provided with the perforative point a.
The other end is open as shown at j and provided with the projecting flange b.
When it is desired to force the point of the rivet through a considerable number of
sheets of paper, or other material, at one time, a steel rod C, provided with point a
adapted to enter and fit the interior of the rivet, and with a suitable handle as e and
sustaining flange, may be employed, in which case the rivet is slipped upon the
implement as shown by dotted lines in Fig. 5, when the point of the rivet is easily
forced through the paper by hand, or by a blow from a mallet, into the aperture n¹ in
the female die S, until the flange b rests against the paper.
The implement is then withdrawn, and the point a, forced down into the tube,
the walls of the latter, being forced outward to form a retaining head, as shown in
Fig. 3
2:16
Any smooth faced hammer d, will serve for this purpose, though I prefer a die
provided with a central depression adapted to receive the point of the rivet.
When the shell of the rivet tube is very thin, another implement, like that shown in
Fig. 5, except that the point a is cut off at about the dotted line t, is inserted within
the rivet, to prevent its shell from bending when the point is headed down.
The cross sectional form of the rivet shown in Fig. 4, is round, but it may he square
as shown in Figs. 7 and 8, or of any desired form.
The rivet may be swaged out from a solid piece of metal, or have its tube formed by
drilling, or it may be formed from sheet metal.
In the latter case, a piece to form the rivet, may be stamped out from a sheet of
metal, as shown by dotted lines in Fig. 10, by suitable dies to give the form shown by
the solid lines.
The piece so stamped out, is easily swaged into the rivet, shown in Figs. 7 & 8, the
sections being brought together and bent up, to forni the flange, the central portion i
being swaged up to form the point a².
The perforative end of the rivet, may have a plane surface, right angular to the
longitudinal axis of the rivet, as shown by the dotted lines in Fig. 2.
1
Having now particularly described and ascertained the nature, of the said
invention and in what manner the same is to be performed as, communicated, to ime
by my foreign Correspondent I declare that what I claim is..
First. As a new article of manufacture, a tubular rivet, closed. at its perforative end,
.and open at the other end, the open end being provided with a projecting retaining
flange, substantially as described and for the purposes set forth...
Second. As a new article of manufacture, a hollow sheet-metal rivet, closed at its
perforative end, and open at the other end, the open end being provided with a
sectional retaining flange, substantially as described; and for the purposes set forth.
Dated this 25th day of February 1887.