Improvements relating to the Insertion and Securing of Tubular Rivets and to Apparatus therefor.
Year: 1887

page_text: [Communicated from abroad by EDWARD L. SIBLEY, of Bennington, Vermont, United
States of America.]
Improvements relating to the Insertion and Securing of Tubular
Rivets and to Apparatus therefor.
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 riviting machines, adapted to insert, and
fasten hollow rivets, having a closed perforative end, and an open flanged end such as
I have described in my application for letters patent for improvements in rivets, made
concurrently herewith.
The object of the invention will appear from the following description.
The invention consists of the novel construction and combination of parts hereinafter
described and pointed out in the claims.
Fig. 1 of the drawings, is a top plan view of my improved machine.
Fig. 2 is a central vertical and longitudinal section taken at the broken line
Fig. 1.
•
Fig. 3 is a side elevation of the setting punch detached.
Fig. 4 is a side elevation of the rivet.
Fig. 5 is a cross sectional view taken on the broken line - in Fig. 4.
J; y in
The head A is supported over the base B, by a connecting arm D, all being
preferably cast in one piece of metal.
The head is made tubular to receive the elongated cylindrical die b, f, adapted to
slide vertically therein.
The head is also provided with another vertical tube to receive the slide pin L,
and with the ears A A', which support the pivot A³, upon which the levers C, C+,
are fulcrumed the lever Cresting within a slot C in the lever C.
The die, is provided with the enlarged head adapted to slide in a corre-
spondingly enlarged portion of the tubular opening in the lead.
071

page_text: A coil spring S, is inserted in the enlarged opening being supported by the
shoulder in the head; the die bis inserted within the spring, and supported by its
shoulder, resting upon the upper end of the spring, as shown in Fig. 2.
The spring forces the head up against the lower side of its operating lever C.
The die is provided with a central aperture, throughout its length, adapted
to receive the setting punch g.
This punch is provided with a shoulder m adapted to engage with the shoulder m',
interiorly of the die, and afford a positive stop movement, to prevent the punch from
projecting below the bottom or mouth of the die.
The flange g', affords a bearing for the lower end of the spring S¹, the upper end
of which finds a bearing upon the inner flange f¹, of the head f, whereby the punch,
and die, are spring connected, during the downward movements of the die, and
positively connected during its upward movements.
Within or below the base B, is a slide-plate E, adapted to support the rivet-
forcing punch a, which is vertically movable in a sustaining aperture extending
through the rivet supporting anvil B₁, and adapted to receive, and support, on its
upper projecting end, a rivet p, as shown by dotted lines in Fig. 2. The method
of operation is as follows; a rivet is placed upon the forcing punch a, as shown by
dotted lines in Fig. 2, and the sheets of material to be fastened together inserted
between the rivet, and the die b; the die is then forced downward by means of the
lever C, until the rivet passes through the material into the mouth of the dic, cutting
out a portion of the material, which is forced up into the die and forced out again, by
the setting punch, y, acted upon by spring S¹.
It must be borne in mind that the slotted lever C does not engage with the
punch g, as the latter must recede from the mouth of the die to permit of the
entrance of the rivet and perforation chips.
As it frequently happens that the rivets do not exactly fit the mouth of the die,
which is provided with the cutting edges common to female dies, or have their
perforative end rounded, the material, especially, if it be light and thin, would
sometimes tear, if not pressed firmly against the extreme end of the rivet.
I secure the desired pressure, by having the spring S', of the desired strength to
force the punch firmly against the material directly opposite the end of the rivet,
which enables me to make a clean cut perforation, through any desired material.
After the rivet has been thus inserted through the material, both levers C and C',
are operated, which forces the die and punch downward, the two acting together as
a setting tool, to head the perforative end of the rivet down upon the material, the
centrally located lever C acting upon the upper end of the punch g.
Just before the punch in its downward movement reaches the end of the rivet, the
central lever C¹, shown in dotted lines in Fig. 2, strikes the upper end of the slide
pin L, which rests upon the arm G¹, of the lever G.
The latter is connected with the slide E, controlled by the spring S supported at
one end by pin M.
Then as the levers continue in their descent, to the position indicated by the lever C,
as shown by dotted lines, the pin L, and lever G, take the positions shown by the
dotted lines, and the slide E, is drawn back against the resiliency of the spring S
which brings the inclined slideway E¹, below the forcing punch a, down which inclined
slideway the punch a slides, as punch sets the perforative end of the rivet upon the
material.
By thus gradually withdrawing the punch a, from the rivets, the walls of the latter
are sustained thereby, and not broken down in an irregular manner by the setting
punch.
After the rivet is set, the levers are released, and the springs restore the respective
parts to the position shown by the solid lines in Fig. 2, the punch a, travelling up the
inclined slideway E¹, and projecting above the anvil B¹, in position to receive another
rivet, when the operation may be repeated, as often as desired.
The slide E, may be operated by hand, without reference to the lever by means
of the handle E, shown in dotted lines in Fig. 2.

page_text: Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed as communicated to me by my
Foreign correspondent I declare that what I claim is :-
-
First In a riveting machine provided with a perforating die and setting punch, the
combination with a rivet-forcing punch a, of a laterally moveable inclined punch
support, E, substantially as described and for the purposes set forth.
Second--In a riveting machine the combination with a rivet supporting anvil
provided with a movable rivet holder a of a perforating die, and setting punch interiorly
fitting said die and spring connected therewith, and means for operating said die and
punch, substantially as described and for the purposes set forth.
Third The rivet holder a, supported on a slide plate E, having a higher and lower
plane separated by an incline E, in combination with the die , and punch g, arranged
to operate substantially as described and for the purposes set forth.
Fourth In a riveting machine provided with a perforating die and setting punch
operated by levers, the combination with one of said levers, of a spring-controlled,
punch-supporting, slide E, having the inclined slideway E', and mechanism,
substantially as described for connecting said slide with said lever.
Fifth The herein described method of inserting and setting upon material, tubular
rivets, having a closed perforative end and an open flanged end, which consists first,
in forcing the perforative end of the rivet through the material into a female die,
whereby the rivet punches out a portion of the material and is inserted within the rivet
hole so formed, secondly, in separating the rivet and die, and lastly, in withdrawing
the forcing punch upon which the rivet is held, from the rivet and upsetting the
perforative end of the inserted rivet of the material, substantially as described and for
the purposes set forth.
Sixth-As a distinct step in the herein described method of inserting and setting
rivets upon material, the described method of inserting the rivets which consists in
forcing the perforative end of the rivet through the material into a female die, and at
the same time submitting the material on the die side and opposite the perforative
point of the rivet to pressure whereby the material is prevented from slipping on the
perforative end of the rivet while the rivet punches out a portion of the material and
is inserted within the rivet hole so formed, substantially as described and for the
purposes set forth.
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