Boiler Plates and other Articles.
Year: 1887

page_text: Date of Application, 29th Nov., 1887
Complete Specification Left, 28th Aug., 1888
Complete Specification Accepted, 5th Oct., 1888
Boiler Plates and other Articles.
I, CHARLES HALL, of No. 229 West 10th Street, in the City of New York, in the
County and State of New York, United States of America, Screw Bolt Manufacturer
do hereby declare the nature of my invention for "IMPROVEMENTS IN THE METHOD
OF AND MEANS FOR RIVETING TOGETHER BOLLER PLATES AND OTHER ARTICLES to
be as follows:-
دو
In riveting machines heretofore constructed rivets are made use of that have heads,
but in practice it is found that the rivet heads are liable to break off especially when
they have been overheated because the previously formed head is not worked or
hammered up to consolidate the same during the time that a head is being riveted up
on the other end.
The object of my present invention is to upset or forge the two heads simultaneously
upon the two ends of a rivet, so that both heads will be of uniform strength, and the
metal of the rivet will be upset with uniformity so as to fill the holes in the sheets
whether those holes coincide exactly or not, thereby rendering both ends of the rivet
uniform in strength.
To accomplish these objects I provide for holding the plates or articles to be riveted,
in their proper positions, equalizing the lengths of the projecting ends of the plain
heated rivet, and for pressing on the ends of the rivet with heading dies that form
both heads on the ends of the rivet simultaneously and in so doing the rivet is upset or
swelled so as to entirely fill the holes in the sheets or plates that are riveted
together.
In some machines the sheets are clamped together and the heated parallel blank
rivet inserted and two dies brought up simultaneously on both ends thereof to upset
the same and make both heads simultaneously. In other machines I provide one fixed
die and one moving die. In this case the sheets are moved partially towards the
stationary die as the heading takes place.

page_text: I prefer to use spring clamping guides or devices in the form of open cylinders
through which the rivets can be introduced, such cylinders surrounding the dies and
being projected by springs and the movement determined by stops upon the die
stocks.
Boiler Plates and other Articles.
I, CHARLES HALL of No. 229 West 10th Street in the City of New York, in the
County and State of New York, United States of America, Screw Bolt 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:
In riveting machines heretofore constructed rivets are made use of that have heads;
but in practice it is found that the rivet heads are liable to break off, especially when
they have been overheated, because the previously formed head is not worked or
hammered up to consolidate the same during the time that a head is being riveted
up on the other end.
The object of the present invention is to upset or force the two heads simultaneously
upon the two ends of a rivet, so that both heads will be of uniform strength, and the
metal of the rivet will be upset with uniformity, so as to fill the holes in the sheets,
whether those holes coincide exactly or not, thereby rendering both ends of the rivet
uniform in strength. To accomplish these objects I provide for holding the plates or
articles to be riveted in their proper positions, equalizing the lengths of the projecting
ends of the plain heated rivet, and for pressing on the ends of the rivet with heading-
dies that form both heads on the ends of the rivet simultaneously, and in so doing the
rivet is upset or swelled, so as to entirely fill the holes in the sheets or plates that are
riveted together.
In the drawings Figure 1 is a section of the mechanism made use of by me in
riveting up plates by one continuous movement. Figure 2 is a similar view of the
apparatus where one motion is given to clamp the plates and a second to rivet up the
heads. Figure 3 is a view of the apparatus with independent clamps, and Figure 4 is
a diagram illustrating a mode of operation that may be employed.
Referring to Figure 3, A B represent the two plates or pieces of material that are to

page_text: be riveted together, and C the cylindrical heated rivet passing through the holes in A. B.
These plates A B may be placed in any suitable holder to keep them in position.
I have shewn the holders D E as connected by screws 3 to a fixed support, F.
The headers G H are in stocks K L, to which an endwise movement is given by
cams, as hereinafter described, or by other suitable means, and each header is made
with a concave end corresponding in shape to the required rivet head. These headers
act against the ends of the rivet and move the same endwise, should it not be accu-
rately in position, and the continuation of the movements upsets the rivet and forms
the two heads simultaneously. In this case it is sometimes necessary to place one or
more filling plates at 6 between the holder E and the fixed abutment F so that different
thicknesses of plates or sheets may be properly held while riveted together, so that the
heads will be of uniform size and strength.
In Figure 2 the headers G H are at the ends of the stocks K L, and there are represented
shafts OP, with cams Q, for giving motion simultaneously to the stocks and headers,
the parts being supported in any suitable framework. In this case the holders DE
are tubular and surround the stocks of the headers and slide endwise, and the
cams R act upon the outer ends of the stocks of the holders to move these up
toward the sheets or articles A B and hold them in proper relation to the headers,
after which the headers are brought up by the cams Q and the rivet C is moved
endwise, if necessary, to render the projecting ends equal, and then the rivet heads
are pressed up upon the ends of the rivet simultaneously.
It is advantageous to have the holders DE separate from their stocks D' E¹,
so that the holder portions may be adjusted by releasing the set screws 10 and
changing the washers or packings at 11, so as to suit the various thicknesses of
metal, and the holders should be open or slotted both top and bottom to facilitato
the insertion of the rivet and to allow scale to drop away. The headers are also
held by set screws, and by changing the washers 12 they may be adjusted to suit the
thickness of the articles being riveted and the amount of iron that is pressed up into
the rivet heads.
In Figure 1 the holders D E are similar to those in Figure 2, except that they are
projected by springs M around the stocks of the headers, and the movement is
limited by pins 14. In this case the two heading dies may be brought up simul-
taneously at opposite sides, as before, or the header G may be stationary and the
motion be given to the header H only. In this instance the sheets A B should be
suspended so as to swing slightly as the header is brought up, and the holders and
springs yield equally as the rivet heads are formed.
In Fig. 4 the heading die G is to be stationary and supported in any
suitable manner, and the die H is to be moved by suitable means, and the
sheets rest against the adjustable stops at 20 while the rivet C is being
inserted, and the header G becomes a gauge so that the rivet will project equally at
each side of the sheet. The two rivet heads will be formed simultaneously and equally
by the movement of the header H, or both headers H and G may be moved
simultaneously.
I prefer to make use of tho holding devices shewn in Figs. 1, 2 and 3, because they
press the two articles together that are being rivetted up, and at the same time hold
such articles and prevent any lateral movement, so that the rivet is kept in line with
the axis of the heading-dies.
The washers 12 between the heading-dies and die-stocks, allow for adjusting the
dies in relation to the gauges, so that the rivet-blank will be brought into exactly the
position required for heading.
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. The method herein specified of riveting together boiler plates and other articles,
consisting in inserting into the coinciding holes a heated solid rivet-blank without a
head and bringing the blank into the proper position relatively to the plates and

page_text: forming both heads simultaneously at the ends of the rivet blank by the pressure of
heading dies, substantially as set forth.
2. The combination in a riveting machine, of holders or gauges for keeping the
boiler sheets or other articles in position, heading dies, and mechanism for actuating
such dies simultaneously, substantially as set forth.
3. The combination, in a riveting machine, of heading dies, a holder surrounding
each heading die, and mechanism for giving motion to the parts for holding the
articles to be riveted and for heading both ends of a heated rivet simultaneously,
substantially as set forth.
4. The combination, with the oppositely moving heading dies, of stocks receiving the
shanks of the heading dies and washers, the holders around such heading dies, the
stocks and washers for the same, and mechanism for giving motion to the parts for
holding the articles to be riveted and for riveting up both ends of a rivet blank simul-
taneously, substantially as set forth.
5. The combination with the two heading dies for simultaneously riveting up heads
on the two ends of a heated rivet blank, of the means, substantially as specified,
of guiding or holding together the sheets of articles to be riveted, so that the
heading dies will render the projecting portions of the rivet uniform at the sides
of the article and then simultaneously head both ends of the rivet, substantially
as set forth.
6. The combination, with the stationary and moving heading dies, of a gauge
against which the articles to be riveted together, rest, so as to determine the extent
that the respective ends of the rivet project, and then allow the articles to be moved
toward the stationary heading die as the two heads are simultaneously formed on
the rivet, substantially as specified.
DLL DO
1000
CHARLES HALL.
By Brewer & Son,
33, Chancery Lane, London,
Patent Agents.