Rivets in Umbrella Frames or other similar Articles.
Year: 1884

page_text: Rivets in Umbrella Frames or other similar Articles.
I FREDERICK GEORGE REDFERN, of No. 4 South Street, Finsbury, in the county
of Middlesex, Patent Agent do hereby declare the nature of the said invention for
"AN IMPROVED MACHINE FOR INSERTING AND RIVETTING THE PINS OR RIVETS IN
UMBRELLA FRAMES OR OTHER SIMILAR ARTICLES" to be as follows:-
This invention relates to an improved machine for driving rivets and rivetting
the same and cutting them off in their place in the work in which they are inserted
and the improved machine is more especially intended for rivetting together the
parts of umbrella frames.
The invention consists in the combination of a frame with a reciprocating
plunger driven by a crank, a feeding slide, a clamp, guides and cutting knives
operated by a lever pivoted to the frame as hereinafter described.
The frame of the machine is made with a curved neck containing the crank and
its bearings, a connecting rod, the plunger and a driving or heading die and with a
base and downwardly projecting ribs and recessed front piece with a moveable cap
plate and containing the feeding and cutting off mechanism hereinafter described.
The top of the machine is bored to receive the crank shaft and its bearings; the
crank communicates a reciprocating motion to the plunger by means of a curved or
compressible connecting rod; the lower end of the said plunger is fitted to receive
the driving or heading die.
Pivoted in the base between the downwardly projecting ribs is a main operating
lever which is connected to the lower end of sliding blocks by a rocking lever.
These blocks are set in a recess in the front of the machine and are covered with a
plate which keeps them in place; a central hole passes through them vertically
with guide bushes or sleeves to fit the wire which is to be used for the rivets.
In the sides of the upper block are pivoted two jaws which hold in their upper
ends the holding and cutting knives and their lower ends are connected to the lower
block by two links; immediately above these links are two rollers which move
over the plates on the sides of the recess in which these jaws and blocks move;
notches are cut in these plates which notches are opposite the rollers when they are
at their highest point; these plates serve to limit the movement of the cutting
knives by which they are only allowed to move far enough to hold the wire
without slipping or cutting it off till sufficient wire has been drawn for one
rivet.

page_text: The plate which covers the sliding blocks and the jaws has a central opening cut
through it to admit the ends of two knee plates one of which is fastened over the
upper block and the other is fastened over the lower block; the said knee plates
can be moved up or down to adjust them to the length of the rivet to be made; on
the inwardly projecting ends of these knee plates is an opening to allow the wire
and the guide bushes to pass through; between the said knee plates is placed a
feeding clamp which grasps the rivet wire between its inner ends and is pivoted in
the centre and has an adjusting screw at its outer end by which it is caused to
bind the wire with sufficient force to prevent it from slipping back and to push it
up between the cutting knives during their downward movement. The distance
which the said clamp can move between the knee plates determines the length of
rivet wire cut at each full movement of the main lever; if the distance between the
knee plates be the same as the extent of movement of the sliding blocks no wire
will be fed up at each movement but if the said distance be less than the extent of
movement of the-sliding blocks that length of wire will be moved up for each full
movement of the main lever so that by adjusting the knee plates I obtain the exact
length for the rivets.
On the upper end of the sliding block over the cutting knife is placed a finger to
guide the work which is being operated on so that the hole shall come directly over
the wire to be inserted for the rivet.
1
The operation of the machine is as follows: the wire to be used for the rivets is
passed up through the guide bushes or sleeves in the sliding blocks in the recess in
the front of the machine till it extends a little above the knives; then the feed
clamp is inserted between the knee plates and is clamped on the rivet wire; power
is then applied to pulleys on the crank shaft whereby the reciprocating plunger is
set in rapid motion, the foot of the operator is then applied to the end of the main
lever which is thereby moved back which causes the lower sliding block to ascend
and at the same time press the links and the lower ends of the jaws outwards
till the rollers strike against the plates on the sides of the recess which are placed
at such a distance as to allow the cutting knives to press into the wire sufficiently
to hold it and carry it up with them till it reaches the end of its movement; the
rollers will then have reached the hollow portions of the plates in the sides of the
recess and the rollers are thereby allowed to move farther outwards till the cutting
knives come together and completely sever the wire. When the main lever is
moved to its former position it reverses all the herein before described movements
and in so doing causes the feed clamp to move downwards till it strikes on the
lower knee plate which stops it and causes it to pass the wire up between the
knives the same distance that it was pulled through the feed clamp which is the
right length for the rivet.
The umbrella ribs and stretchers or other article to be rivetted is then placed
against the guide finger directly over the rivet wire and the herein before described
operation of the main lever is repeated: as the sliding blocks are raised the work
being operated on is raised against the rapidly reciprocating die and plunger and
is quickly driven down onto the rivet and the rivet is headed by it; at the same
time the knives cut the wire off and leave it fastened in the work; the main lever
is returned to its forward place and is ready to repeat the operation.
At each full movement of the main lever each way wire will be fed up for one
rivet and it will be held while the die is being driven onto the article to be rivetted
and is heading the rivet and the wire is then cut off and left secure in the said
article.

page_text: COMPLETE SPECIFICATION.
I GEORGE FREDERICK REDFERN, of No 4, South Street, Finsbury, In the
county of Middlesex, Patent Agent, do hereby declare the nature of the said
invention for "AN IMPROVED MACHINE FOR INSERTING AND RIVETTING THE PINS
OR RIVETS IN UMBRELLA FRAMES OR OTHER SIMILAR ARTICLES "
(A communica-
tion to me from abroad by Daniel Marks Redmond, of Philadelphia, Pennsylvania,
United States) and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to an improved machine for driving rivets and rivetting
the same and cutting them off in their place in the work in which they are
inserted and the improved machine is more especially intended for rivetting
together the parts of umbrella frames.
The invention consists in the combination of a frame with a reciprocating
plunger driven by a crank, a feeding slide, a clamp, guides and cutting knives
operated by a lever pivoted to the frame as hereinafter described.
game
In order to enable the invention to be fully understood I will describe the
by reference to the accompanying drawing in which figure 1, represents a front
elevation of the upper part of a machine for inserting and rivetting the pins or
rivets in umbrella frames or other similar articles and constructed according to
this invention; figure 2, is a vertical section on line x, x, of figure 3, and figure 3,
is a front elevation partly in section the section being taken on the line y, y, of
figure 2,; figures 4, and 5, are detached details of parts of the machine. Similar
letters in all the figures represent similar parts.
The frame A, of the machine is made with a curved neck a, containing the
crank and its bearings, a connecting rod H, the plunger F, and a driving or
heading die c, and with a base b, and downwardly projecting ribs and front piece
recessed at B, with a movable face plate E, and containing the feeding and cutting
off mechanism hereinafter described.
The top of the machine is bored to receive the crank shaft G, and its bearings;
the crank communicates a reciprocating motion to the plunger F, by means of the
curved or compressible connecting rod H; the lower end of the said plunger F, is
fitted to receive the driving or heading die c.
Pivoted in the base b, between the downwardly projecting ribs is a main
operating lever M, which is connected to the lower end of sliding blocks D, and D¹,
by a rocking lever J, These blocks D, and D¹, are set in the recess B, in the
front of the machine and are covered with the plate E, which keeps them in place;
a central hole passes through them vertically with guide bushes or sleeves a¹, a', to:
fit the wire f, which is to be used for the rivets.
In the sides of the upper block D₁, are pivoted at e, e, two jaws C, C, which
hold in their upper ends the holding and cutting knives i, i, and their lower ends
are connected to the lower block D, by two links g, g,; immediately above these
two links g, g, are two rollers l, l, which move over the plates h, h, on the sides of
the recess B, in which the jaws C, C, and blocks D, D', move;. notches j, j, are cut

page_text: in the plates h, h, which notches are opposite the rollers l, l, when they are at their
highest point; these plates h, h, serve to limit the movement of the cutting
knives i, i, by which they are only allowed to move far enough to hold the
wire f, without slipping or cutting it off till sufficient wire has been drawn for
one rivet.
The plate E, which covers the sliding blocks D, D¹, and the jaws C, C, has a
central opening O, cut through it to admit the ends of two knee plates P, and P1,
one of which, P¹, is fastened over the upper block D¹, and the other P, shewn in
perspective view at figure 5, is fastened over the lower block D,; the said knee
plates can be moved up or down to adjust them to the length of the rivet to be
made by means of set screws p, p, and slots p¹, p¹,; in the inwardly projecting
ends of these knee plates is an opening to allow the wire f, and the reduced ends
of the blocks with the guide bushes to pass through as shewn in figure 3; between
the knee plates P, and P¹, is placed a feeding clamp N, shewn detached in plan in
figure 4, which grasps the rivet wire f, between its inner ends at 2, 2, and its two
parts k, and k¹, are pivoted to the plate m, and the clamp has an adjusting screw o,
at its outer end by which it is caused to bind the wire f, with sufficient force to
prevent it from slipping back and to push it up between the cutting knives i, i,
during their downward movement. The distance which the said clamp N, can
move between the knee plates P, and P¹ determines the length of rivet wire f
cut at each full movement of the main lever M,; if the distance between the knee
plates P, and P¹, be the same as the extent of movement of the sliding blocks
D, and D¹, no wire will be fed up at each movement but if the said distance be
less than the extent of movement of the sliding blocks that length of wire will
be moved up for each full movement of the main lever M, so that by adjusting the
knee plates P, and P', the exact length for the rivets is obtained.
On the upper end of the sliding block over the cutting knives i, i, is placed a
finger to guide the work which is being operated on so that the hole shall come
directly over the wire to be inserted for the rivet.
The operation of the machine is as follows: the wire f, to be used for the rivets
is passed up through the guide bushes or sleeves a¹, in the sliding blocks D, and D'
in the recess B, in the front of the machine till it extends a little above the
knives i, i,; then the feed clamp N, is inserted between the knee plates P, and P¹,
and is clamped on the rivet wire f.; power is then applied to pulleys on the crank
shaft G, whereby the reciprocating plunger F, is set in rapid motion; the foot of
the operator is then applied to the end of the main lever M, which is thereby
moved back which causes the lower sliding block D, to ascend and at the same time
press the links g, and the lower ends of the jaws C, outwards till the rollers l, strike
against the plates h, on the sides of the recess B, which are placed at such a distance
as to allow the cutting knives i, i, to press into the wire f, sufficiently to hold it
and carry it up with them till it reaches the end of its movement; the rollers l,
will then have reached the hollow portions j, of the plates h, in the sides of the
recess B, and the rollers 7, are thereby allowed to move farther outwards till the
cutting knives i, i, come together and completely sever the wire f. When the main
lever M, is moved to its former position it reverses all the hereinbefore described
movements and in so doing causes the feed clamp N, to move downwards till it
strikes on the lower knee plate P, which stops it and causes it to pass the wire f, up
between the knives i, i, the same distance that it was pulled through the feed
clamp N, which is the right length for the rivet.
The umbrella ribs and stretchers or other articles to be rivetted are then placed
against the guide finger directly over the rivet wire f, and the herein before described
operation of the main lever M, is repeated; as the sliding blocks D, and D¹, are
raised the work being operated on is raised against the rapidly reciprocating die o,
and plunger F, and is quickly driven down onto the rivet and the rivet is headed
by the die c,; at the same time the knives i, i, cut the wire off and leave it fastened
in the work; the main lever M, is returned to its forward place and is ready to
repeat the operation,;

page_text: At each full movement of the main lever M, each way, wire will be fed up for
one rivet and it will be held while the die c, is being driven onto the article to be
rivetted and is heading the rivet and the wire is then cut off and left secure in
the said article.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
(1.) The combination of the frame A, recessed at B, the blocks D, D¹, and the
removable face plate E, with the jaws C, C, held as shown and described.
(2.) The combination with the jaws C, C, and their operative mechanism, of the
knives i, i, arranged in the upper ends of said jaws, to grasp the wire, lift it, hold
it until the upper end is rivetted and finally cut it off as described.
(3.) The jaws C, C, pivoted to the block D¹, and linked to the block D, in com-
bination with the treadle and the plates h, h, the guide ways in the said plates and
the rollers, for the purposes set forth.
(4.) The plates h, cut away at j, in combination with the jaws C, C, pivoted at e,
and linked to the block D, substantially as and for the purposes set forth.
(5.) The combination with the vertically movable and opening and closing
jaws C, C, of the feed clamp N, substantially as described.
(6.) The combination with the feed clamp N, and vertically movable jaws C, C,
of the plates P, P', for adjusting the feed for making rivets of different lengths
substantially as described."
(7.) The blocks D, D¹, having passages made through them in combination with
the jaws C, C, pivoted and linked to the said blocks substantially as described.
(8.) The jaws C, C, and blocks D, D¹, placed in and adapted to be reciprocated in
the recess B, of the main frame A, in combination with the plates P, P¹, and face
plate E, formed with an opening O, the plates P, P¹, being attached to the plate E,
substantially as and for the purpose described.
(9.) The improved machine for inserting and rivetting the pins or rivets in
umbrella frames or other similar articles as hereinbefore described and represented
in the accompanying drawing.