Improvements in Rivetting Machines.
Year: 1890

page_text: Date of Application, 3rd June, 1890
Complete Specification Left, 22nd Aug., 1890-Accepted, 4th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in Rivetting Machines.
1, REINHOLD ADOLPH CARL of Hearne in the County of Robertson, and State of
Texas, United States of America, Tinsmith, do hereby declare the nature of this
invention to be as follows:-
The object of my invention is to provide a rivetting machine by which metal
rivets may be rapidly driven through any desired material and by which the rivets
may be headed at the same operation.
The burr-set
The frame of the machine is provided at the top with a forwardly-extending portion
and fixed to the central portions of the frame is a horizontal plate slotted at the
rear to give passage to a connecting rod which is pivoted to the rear end of a curved
treadle at the base of the frame and at its upper end is pivoted to the rear end of a
horizontal lever pivoted between ears of the frame. The forward end of the lever
projects through a slot in the driving rod, said rod being vertically movable through
a guide on the forward end of the bent portion of the frame and being supported in
position by the lever. The driving rod is grooved for nearly its entire length and an
arm is held by a set screw to slide on the rod near the lower end thereof from which
depend parallel spring arms, said arms being parallel with the driving rod and
attached at their lower ends to rearwardly extending lugs of a burr-set which is com-
posed of two vertically-separable members which enclose the lower end of the
driving rod and are held together by the pressure of the spring arms.
near its lower end has lateral holes to permit any material which may accumulate in
the burr-set to escape.
It is also provided with an annular internal rib which engages
the lower end of the driving rod and the downward movement of said rod acting.
upon the rib causes the members of the burr set to spread and permit the driving rod to
descend through the same. A downwardly-bent rod is attached to the front part of
the forwardly extending portion of the frame and carries a clamp plate having
rearwardly-extending members to enclose the burr-set and hold the members thereof
together until said burr-set has been forced below the clamp. The clamp is provided
with an upwardly extending sleeve which moves vertically upon the rod and the
sleeve and clamp are supported upon the rod by the spiral spring, the lower end of
which is fixed to the sleeve and the upper end to the rod. The members of the clamp
are connected to the burr-set by fine spiral springs and when the burr-set is forced
downwards it draws the clamp with it until it nears the lower end of its stroke when
the clamp slips off and is raised by the spring when the burr-set is raised. A rivet
burr-holder composed of two similar members is supported directly beneath the burr-
set and driving rod and in vertical alignment with the same by spring arms which are
attached to rearwardly extending lugs of the holder and which at their upper ends
are attached to an arm which is provided with a sleeve moving vertically upon a
guide rod attached to the frame. The forward end of the arm is loosely attached to
the driving rod by a set screw which projects through the apertured front portion of
the arm and into the groove of the driving rod. A brace depends from the lower
side of the central plate of the machine. It has at its outer extremity a horizontal
shelf upon which rests an upright or anvil which is closed at its upper end and upon
its lower end has a pin or spindle which projects through the shelf. The upright
projects through a slot in the forward portion of the plate and its upper end is
enclosed by a sleeve which projects above the top of the upright and forins a pocket
for the rivet said sleeve being supported by a spiral spring which encircles the upright
below the sleeve.
To operate the machine, a rivet is placed upon the upper portion of the upright
and a rivet-burr is placed in the rivet holder which has a conical interior that it may

page_text: suitably support various sized rivet-burrs. The material to be rivetted is then placed
between the upper end of the sleeve and the rivet-burr-holder. The operator then
operates the treadle thus raising the rear end of the lever and depressing the for-
ward end and forcing downward the driving rod. As the driving rod descends, the
burr-set strikes upon the upper surface of the burr and the pressure causes the rivet
to project through the material and through the perforation of the burr. The burr-
set will then be below the clamp and the driving rod will force the members of the
burr-set apart, thus permitting the lower end of the driving rod to strike upon the
point of the rivet and head the same.
In order that the rivetting may be neatly done the lower end of the rod should be
slightly concaved like the ordinary rivet-set thus ensuring a smooth head to the rivet.
The machine with the burr-holder removed is capable of use for rivetting tin and
light sheet iron.
Dated this 2nd dare of Tuna 1800
COMPLETE SPECIFICATION.
Improvements in Rivetting Machines.
1, REINHOLD ADOLPH CARL of Hearne in the County of Robertson and State of
Texas United States of America, Tinsmith, 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 rivetting machines; and the object of
my invention is to produce a rivetting machine, by means of which metal rivets may
be rapidly driven through any desired material and by which the rivets may be
headed at the same operation.
To this end my invention consists in certain features of construction and com-
bination of parts, which will be hereinafter fully described and. pointed out in the
claims.
Reference is to be had to the accompanying drawings, forming a part of this
Specification, in which similar letters of reference indicate corresponding parts in all
the figures.
.
Figure 1 is a side elevation of the device, with the driving and heading mechanism
in vertical section ;
Figure 2 is a front view of the machine;
Figure 3 is a horizontal section, on the line 3-3 of Figure 1 ;
Figure 4 is a detailed perspective view of the rivet-burr-holder and its supporting
arins;
Figure 5 is a detailed perspective view of the burr-set and the supporting mechanism
for the same; and
Figure 6 is a plan of the burr-holder, with its supporting arms in section.
An upright frame A, is provided at the top with a forwardly-extending portion A',
and with vertical ears A2, and fixed to the central portions of the frame, is a
horizontal plate B, having a slot B', in the rear portion thereof for the passage
of the connecting rod D. Pivoted in the base of the frame is a curved lever &
which extends rearwardly through a slot in the frame A, which is provided at its
forward end with a suitable treadle C, and which is pivoted at its rear end
to the connecting rod D, which extends upwardly through the slot B¹ of the
plate B, and is pivoted to the rear end of the lever E, said lever being centrally
pivoted between the ears A2 of the frame A.
-The forward end of the lever E projects through a vertical slot F', in the
driving rod F. said rod being vertically movable through a guide on the forward
end of the portion A¹ of the frame A, and being supported in position by the lever E.
The driving rod F is provided with a groove F, which extends nearly the entire

page_text: length of the rod, and held to slide on the rod, near the lower end thereof, by a set-
screw a', is an arma, from which depend parallel spring-arms a², said arms being
parallel with the driving rod F and being attached at their lower ends to the
rearwardly-extending lugs 61, of the burr-set b, which is composed of two vertically-
separable members, which enclose the lower end of the driving rod F, said members
being held together by the pressure of the spring members a².
The burr-set is provided near the lower end with holes b², which extend
laterally through the same and which permit any material which may accumulate
in the burr-set to escape. The burr-set is also provided with an annular internal
rib 3, which engages the lower end of the driving rod F, and the downward
movement of said rod, acting upon the rib, will cause the members of the burr-set b
to spread and permit the driving rod to descend through the same, as will be
hereinafter described.
Attached to the front part of the forwardly-extending portion A¹ of the frame A
is a rod d, which is bent to extend downwardly parallel with the driving rod F,
and mounted upon the lower end of the rod, is a clamp plate e, having rearwardly-
extending members e², to enclose the burr-set b, and hold the members thereof
together until said burr-set has been forced below the clamp. The clamp e is
provided with an upwardly-extending sleeve e¹, which moves vertically upon the rod d,
and the sleeve and clamp are supported upon the rod by the spiral spring d',
lower end of which is fixed to the sleeve el, and the upper end to the rod d. The
members of the clamp e are connected to the burr-set by the fine spiral springs c³,
and when the burr-set is forced downward it draws the clamp with it until it nears
the lower end of its stroke, when the clamp slips off and the spring raises the
clamp when the burr-set is raised.
the
A rivet-burr-holder f, composed of two similar members is supported directly
beneath the burr-set b, and driving rod F, and in vertical alignment with the same,
by the spring-arms f. which are attached to rearwardly-extending lugs of the
holder, and which, at their upper ends are attached to the arm g, said arm having
a sleeve gl, at its rear end, which moves vertically upon the guide rod h, which is
attached to the portion A' of the frame A. The forward end of the arm 9 is loosely
attached to the driving rod F by a set-screw g², which projects through the apertured
front portion of the arm g and into the groove 2 of the driving rod.
Depending from the lower side of the plate B is a brace H, having at its onter
extremity, a horizontal shelf H', upon which rest; the upright or anvil J, said upright
being closed at its upper end, and having upon its lower end a depending spindle 1,
which projects through the shelf H. The upright J projects through a slot in the
forward portion of the plate B, and the upper end of said upright is enclosed
by a sleeve K, which projects above the top of the upright and forms a pocket for
the rivet j, said sleeve being supported by a spiral spring i, which encircles the
upright J below the sleeve.
To operate the machine, a rivet j, is placed upon the upper portion of the upright J,
and a rivet-burr m, is placed in the rivet-holder, which has a conical interior, as
shown, that it may suitably support various sized rivet-burrs. The material k, to be
rivetted is then placed between the upper end of the sleeve K and the rivet-burr-
holder. The operator then steps upon the treadle C', thus moving the rod D, raising
the rear end of the lever E, and depressing the forward end of the same, and forcing
downward the driving rod F.
As the driving rod descends, the burr-set 6 will strike upon the upper surface of
the burr m, and the pressure will cause the rivet j to project through the material k
and through the perforation of the burr m. The burr-set will then be below the
clamp e and the driving rod F will force the members of the burr-set apart, thus
permitting the lower end of the driving rod to strike upon the point of the rivet and
head the same.
In order that the rivetting may be neatly done, the lower end of the rod F should
he slightly concaved, like the ordinary rivet-set, thus insuring a smooth head to
the rivet.

page_text: The machine with the burr-holder removed is capable of use for rivetting tin and
light sheet iron.
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. A rivetting machine; consisting essentially of an upright frame having a
vertically-inovable driving rod therein, a vertically-separable set loosely mounted upon
the lower end of the driving rod, and an upright mounted in the frame beneath the
driving rod and set, said upright having a spring-actuated sleeve extending above the
upper end thereof, substantially as described.
2. A rivetting machine, consisting essentially of an upright frame having a
vertically-movable driving rod therein, a vertically-separable rivet-burr-set loosely
mounted upon
the lower end of the driving rod, a vertically-separable rivet-burr-holder
supported heneath the burr-set and in alignment with the burr-set and driving rod,
and an upright mounted in the frame beneath the driving rod, burr-set and burr-
holder, said upright having a spring-actuated sleeve extending above the upper end
thereof to form a pocket for the rivet, substantially as described.
3. A rivet machine, consisting essentially of a frame, a vertically-movable driving
rod mounted in the frame, a spring-actuated vertically-separable burr-set mounted
upon the lower end of the rod, a clamp fixed to the front portion of the frame and
adapted to enclose said burr-set, a separable burr-holder beneath the driving rod and
burr-set, supported by spring-arms attached to an arm vertically movable upon the
driving rod, and an upright mounted in the frame to vertically align with the driving
rod, burr-set and burr-holder, said upright having a spring-actuated sleeve mounted
thereon and projecting above the same to form a pocket for the rivet, substantially as
described.
4. The combination, with the driving rod F, having means as shown, for actuating
the same, of the vertically-separable burr-set b, having the perforations 12, and the
annular rib 63, therein, said burr-set supported by the spring members a², and arm a,
from the driving rod, substantially as described.
5. The combination, with the driving rod F, having the separable burr-set b,
mounted thereon, as shown, of the separable burr-holder f, having the spring members,
attached thereto, said members being supported by the arm g, which is vertically
movable upon the driving rod, substantially as described.
6. The combination, with the driving rod F, and burr-set b, mounted thereon as
shown, of the clamp e, adapted to enclose the burr-set and having means, as rod d and
spring d¹, for guiding and supporting the same, substantially as set forth..
Dated this 22nd day of August 1890.
OCOT OTA
R. A. CARL.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.