Improvements in Rivet Making Machines.
Year: 1890

page_text: Date of Application, 9th Aug., 1890
Complete Specification Left, 9th May, 1891-Accepted, 1st Aug., 1891
PROVISIONAL SPECIFICATION.
Improvements in Rivet Making Machines.
I, JAMES AUGUSTUS HANDS, of 5 Francis Street, Church Road, Battersea, in
the County of Surrey, Mechanical Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention has reference to the manner in which I construct and arrange the
parts forming a rivet making machine whereby the output from such machines is
doubled, or incrcased proportionately with the number of dies and tools I arrange
upon such machines.
In carrying my invention into effect I construct a metal rivet making machine
with the usual fast and loose pulley driving arrangement together with the cam
and lever action common to such ordinary single rivet making machines, and with
the feeding arrangement employed similarly to the system now in use with the
ordinary single machine. But instead of fixing one die and one gripper or nipper
for feeding the wire I mount two dies in the framework of my improved machine
and employ two levers and two grippers for feeding simultaneously two separate
lengths or pieces of wire from which the rivets are to be made. I also arrange the
dies so that by a slight alteration of the parts, the machine may be readily
converted from an open die to a solid die machine. And by an alteration and
exchange of the cams I am enabled to make rivets of varying lengths in my
improved machine.
cause the feeder to eject the rivets from the holes or die plates after they are
headed without the addition of any special or peculiar levers or driving gear for
this purpose.
By this arrangement of double feeding levers and double grippers, with the
double ejecting action arranged upon the machine I am enabled to produce two
rivets with cach revolution of the machine, or when small rivets only are necessary
I am able to arrange my parts and fittings upon the machine so that three rivets
can be simultaneously produced.
I employ the peculiar combination of duplicate parts with single action for
making rivets of any particular or peculiar kind of material, and I also embody
the same system of construction when making eyelets out of hollow rods or tubes
fed into the machine similarly to the manner of feeding in the solid rods for
making rivets; and I employ any usual or well known form of driving gear and
clutch mechanism for giving motion to and for controlling the machine.
Dated this 8th day of August 1890.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Rivet Making Machines.
I, JAMES AUGUSTUS HANDS, of 5 Francis Street, Church Road, Battersea, in
the County of Surrey, Mechanical Engineer, 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 :-
This invention has reference to the manner in which I construct and arrange the
parts forming a rivet making machine whereby the output from such machines is
doubled, or increased proportionately with the number of dies and tools I arrange
upon such machines.

page_text: In carrying my invention into effect I construct a metal rivet making machine
with the usual fast and loose pulley driving arrangement together with the cam
and lever action common to such ordinary single rivet making machines, and with
the feeding arrangement employed similarly to the system now in use with the
ordinary single machine. But instead of fixing one die and one gripper or nipper
for feeding the wire 1 mount two, dies in the framework of my improved machine
and employ two levers and two grippers for feeding simultaneously two separate
lengths or pieces of wire from which the rivets are to be made. I also arrange the
dies so that by a slight alteration of the parts the machine may be readily
converted from a solid die to an open die machine. And by an alteration and
exchange of the cams I am enabled to make rivets of varying lengths in my
improved machine.
I cause the feeder to eject the rivets from the holes or die plates after they are.
headed without the addition of any special or peculiar levers or driving gear for
this purpose.
By this arrangement of double feeding levers and double grippers, with the
double ejecting action arranged upon the machine I am enabled to produce two.
rivets with each revolution of the machine.
employ the peculiar combination of duplicate parts with single action for
making rivets of any particular or peculiar kind of material, and I also embody
the same system of construction when making eyelets out of hollow rods or tubes
fed into the machine similarly to the manner of feeding in the solid rods for
making rivets and I employ any usual or well known form of driving gear and
clutch mechanism for giving motion to and for controlling the machine.
In order that my invention may be readily understood and carried into
effect I append hereunto two sheets of explanatory drawings to be hereinafter
referred to:-
Figure 1 Sheet 1 is a side elevation of my improved machine. Figure 2 is an
end elevation, and Figure 3 is a plan of the same when arranged, for producing.
two rivets with each revolution of the machine.
AA are fast and loose pulleys and B is a fly wheel all mounted upon the crank
shaft C D is a crank disc giving motion by means of the gab ended connecting
rod D and cross lever D' to the feed slide F and nipping levers E E' which carry
forward the two wires W W through the guide box G. H is a connecting rod and.
thrusting cam which carries backwards and forwards the slide with its contained.
tool or tools K for heading the rivets. L is a cam mounted or formed upon the
main shaft C, and is the cam disc or roller carried in the jaw end of the cut-off
operating lever L. The lever L being free to move upon the gudgeon or shaft L
as a centre, and thus to force down the wedge block L³ working against the inclined
surface M and moves forward the cut-off slide M2 at a certain period. of cach
revolution.
On Sheet 2 Figure 4 is a detailed part sectional, elevation partly, in section,
of the end of my improved machine showing the feed and cut-off motion drawn to
an enlarged scale. Figure 5 is an end elevation and Figure 6 is a plan of the
same arrangement. Figure 7 is an enlarged elevation of the feed slide and levers
with their operating parts shown in section.
.
The body or side frames NI mount upon and rigidly secure to standards or
brackets 00'; on to one standard or bracket O. I secure a pin P for carrying a
spring P¹ to keep the cam roller L' always bearing fairly upon the cam L. To the
other standard I securely bolt or pin a series of laminated spring plates R the
free end of which I cause to press against the outer surface of the cut-off plate M²
for the purpose of ensuring its return movement when the cam lever L' is being
raised away from the wedge block L. The forward movement of the plate M
being caused by the cam action and the wedge sliding block. The sliding, block M
receives its forward movement to cut off and carry over the rivets from, the main,
holes T in the die to the cupping or heading holes U, U by means, of the down
ward pressure of the lever Lupon the wedge block L³ and the backward, or,

page_text: return movement of the slide M is effected by means of the resistance of the
spring R
1 carry the wires W W through two adjustable guiding blocks or dies G, and
regulate the tension upon them when in position for the purpose of preventing
their springing back or away from the feeding clips, by means of a capstan head
screw (sometimes suspending a light weight from one of the capstan arms or
levers for the greater security of the wires when thus in position. After carrying
the two lengths of wire W W through the end guides G I cause them to pass
through holes in an end bracket F and then through a supplementary sliding
bracket F having tapered or conical ends which press against the ends E E
of the nipping or feeding levers E E¹. The wires after passing through
the supplementary or lever tightening bracket F³ I cause to be engaged or
nipped by the adjustable set screws E' E' carried on the ends of the rocking
levers E E; the pressure upon the nipping screws being transmitted from
the sliding inclined plane bracket F being carried forward by the connected
rocking lever D³. The motion of the lever D³ upon the pin D being communi-
cated by the levers and joints D² D* D* D³ from the crank disc D upon the main
shaft C. The motion of the sliding bracket F2 I regulate and adjust to suit any
particular requirement to give any desired freedom of the nipping screws E' E by
means of the screw stop F³. Upon the sliding bracket F reaching the end of its
slide formed upon the feed slide F, I cause it to come into contact with a
stop F carried upon the slide F, and thus to carry forward the main or feed
slide F when the nipping levers E E' have been tightened upon the wires W W.
The wires I cause to be carried forward by the motion of the machine until they
press against and carry back to their shoulders the stop spring pins T2 T3 carried
upon the bent bracket plate T which I secure to the slide M. When the full
stroke of the machine in the forward direction has been made and the necessary
lengths of wire carried to the stop pins, then the cam lever acts upon the sliding
wedge block and forces out the cutter plate M2 which cuts off the projecting wires
beyond the die plate. These cut lengths being held in position partly by the semi
circular shape of the cutter and partly by the spring stop pins T2 T3, they are then
conveyed to the countersunk holes U, U₁ and upon coming immediately opposite
to them, are forced therein, by the springs urging forward the stop pins T T
The continued movement of the shaft C then causes the heading tool or tools K
to be brought forward and the thrust from the same to be given to the short
lengths of wire then within the holes U U¹ and the rivet heads to be formed by
the projecting metal being forced into the cupped or countersunk dies within the
die block or die bed X of my machine. The return motion of the shaft C and
with it the forming tool K permits of the striking out rods being carried forward
by the adjustable studs Y, thus ejecting the headed rivets from the die, at the
same time that the fresh lengths of wire W W are being carried forward by the
nipping levers. I provide ordinary spiral springs Y around my striking out or
ejecting rods and for ensuring a free return of the rods when the studs Y' are
retreating.
1 sometimes dispense with the spring E' for keeping the nipping levers open and
free from the wires when the backward stroke of the feeding slide is being made,
substituting instead a cord or strip of india rubber or other elastic material.
Similarly I sometimes arrange double attachment springs of any desired form for
giving the return motion instead of the single end supported springs as set forth in
the accompanying drawings.
When arranging my improved machine for producing eyelets, cups, washers, cases
or other like articles I modify the tools and formers to suit any particular shape of
article to be produced without departing from the essential features of double
feeding and double manufacture as hereinbefore described when applying my
invention to a duplex rivet making machine as illustrated.
When arranging my improved machine as an open die instead of a solid die
machine as herein before described I employ a crank or ram of the form 1 as shown

page_text: This
in Figure 1 instead of the form for the solid die as shown in L Figure 1ª.
open die cam I arrange so that the die plates shall be moved forward a certain
distance with their rivets or lengths of wires therein and shall then be caused to
remain in a fixed position notwithstanding the continued movement of the cam, so
that the heading tool or punch K shall have time to come forward and form the
heads of the rivets before any alteration occurs in the position of the die plates.
I thus cause my cam 1 to have a long bearing surface which is concentric with the
shaft c.
I also alter the arrangement of die plate by introducing a split die as
shown in Figure 8 and having but two holes one above the other to serve as the
cutting off holes and also as the rivet head forming holes; I make the two holes
for receiving the two wires with countersunk outer faces and I split the die
plates m, m' as shown giving to the upper meeting edge of the plate m a slightly
inclined or bevilled corner. I mount these two die plates in the block of my
machine in the usual ordinary manner with bolts and cover plates, so that the
spring M³ acts against the back surface or edge of m; and the sliding block M
acts against the opposite outer edge of m. Above the division line of the die
plates I arrange a bent spring plate m² to form a stop for the backward movement
of the die plate m² and also to form an opening plate to keep the two dies
sufficiently clear of each other to permit of the rivets being readily ejected from
the holes. The taper or bevil I arrange at the top of m so that the movement
forward of the plate m under the influence of the sliding block M will cause the
spring plate m² to be raised and thus the two edges of the die plates to be brought
close together ready for the correct formation of the rivet heads when acted upon
by the punch or former K.
When thus arranging open die plates I dispense with the ejecting portion of my
machine F, Y, Y¹, Y2, and I employ a fixed instead of movable plate T for the
spring stops T, T3 so that the slide block M moves forward without the stop pins.
I cause the open die plates to cut off the rivet wires the length determined by the
stops and there to carry forward the wires thus cut off until brought immediately
opposite to the punch or tool K which upon being brought against the projecting
rivet wires causes them to fill the countersunk or recessed holes in which they are
held and thus the necessary heads to be produced. Upon the withdrawal of the
punch and the backward movement of the die plates until opposite their original
position, the advancing lengths of wire eject from the open plates, then standing
slightly apart, the rivets thus made; and new wires are ready for being cut off by
the advance of the slide block and plates for a new stroke of the machine.
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 construction of rivet making machines and machines for like purposes,
having two wires fed or conveyed into the machine simultaneously by one clutch
motion substantially as hereinbefore described and as illustrated.
(2) The construction of rivet making machines and machines for like purposes,
having double die boxes or formers, and double cutting off blades arranged upon
the same horizontal straight line substantially as and for the purposes hereinbefore
described and as set forth.
(3) The construction of rivet making machines and machines for like purposes
having a blade or blades cutting off two lengths of wire and then conveying them
to two cup dies or formers by one movement of the blade slide, substantially as
herein before described.
(4) In rivet making machines and machines for like purposes, the application
and arrangement of a pair of nipping levers and bearing screws, controlled by
a single tightening and releasing sliding bracket, for engaging and releasing two
separate wires, substantially as and for the purposes hereinbefore described, and as
set forth.
(5) In rivet making machines and machines for like purposes, the application

page_text: and arrangement of a moving slide for feeding two wires into two dies, simul-
taneously with the ejectment of two rivets or other like articles from two distinct
or independent dies or formers, substantially as and for the purposes herein before
described and as set forth.
(6) The combination and arrangement of parts comprising a rivet making
machine, or a machine for making like articles, substantially as and for the
purposes hereinbefore described and as illustrated in the accompanying drawings.
Dated this 8th day of May 1891.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicant.