Improvements in Machines for Rivetting Metallic Hollow Ware and the like.
Year: 1893

page_text: Date of Application, 14th Nov., 1893
Complete Specification Left, 20th June, 1894-Accepted, 21st July, 1894
PROVISIONAL SPECIFICATION.
Improvements in Machines for Rivetting Metallic Hollow Ware and
the like.
I AIME LOUIS VUILLIER of Box 172 Millis in the County of Norfolk and
State of Massachusetts, United States of America, Machinist, do hereby declare
the nature of this invention to be as follows:-
This invention relates to improvements in dies for setting rivets, and particularly
for the riveting of ears upon pails and like articles of manufacture, and has for its
object to provide novel devices of the character indicated, which may be applied
to punching machines or drop presses and afford means to secure a pail ear in place
on a pail by one stroke of the machine, in a neat and rapid manner.
To this end, my invention consists in the construction and combination of parts
as is hereinafter described.
The die block is preferably of cylindrical form and provided with a shank to fit
in a socket in the vertically reciprocating head of a power actuated punching
machine.
The lower portion of the die block is reduced in diameter, the part above the
shoulder, thus produced, being peripherally threaded to receive the interiorly-
threaded upper portion of a keeper sleeve, which is tubular, and of a proper length
to afford support to other parts, an inwardly projecting flange on the lower end of
the keeper sleeve, serving as a seat for a stripper block, that is an important
feature of the upper die.
The upper end of the stripper block is made circular and flanged so as to loosely
fit within the keeper sleeve and rest upon its flange.
Below the flange the body of the stripper block is by preference reduced on the
front and rear sides, and converged downwardly on the edges so as to lighten this
portion of the block, thus affording a laterally elongated lower portion which
projects downwardly through the circular opening in the sleeve. The lower end
of the stripper block has its face shaped to conform with the side surface of the
ear, that is exterior when affixed to a pail or like receptacle.
Two round holes are formed in the lower face of the die block to receive a pair
of cylindrical punches, secured by set screws that are inserted in threaded holes in
the reduced cylindrical part of the die block and bear on flattened seats made to
receive their ends on the sides of the punches near their upper ends which are in
contact with the bottoms of the socket holes in the die blocks.
The punches project below the die block sufficiently for effective service and
their lower ends have cone points formed thereon so as to adapt them to serve as
riveting hammers, said faces being made slightly concave to more perfectly effect
the neat riveting operation, which will be further mentioned.
The stripper block is perforated to receive the projecting portions of the punches
that project below the die block, the diameter of said perforations being so
proportioned as to allow the punches to loosely fit therein and thus adapt the
stripper block to slide on said punches.
The perforations in the stripper block are preferably made coniform near their
lower ends to conform to the shape of the conical points of the punches.
The annular space provided by the reduction of the diameter of the die block is
occupied by a spring of vulcanized rubber or a spiral metallic spring if preferred,
said spring being intended to normally hold the stripper block upon the flange of
the keeper sleeve, sufficient space being allowed to intervene between the lower
face of the die block and the upper face of the stripper block to permit the latter

page_text: named piece to slide upwardly and expose the normally enclosed points of the
punches when said stripper block is made to impinge on some supported object
below it.
The keeper sleeve is furnished with socket holes to receive the end of a pin
lever or the tit of an ordinary spanner wrench for screwing the sleeve upon or off
the die block, as may be required.
The lower die of the set of two dies that constitute the improvement, consists of
au oblong rectangular metallic block, said block being mounted upon the base or
bed plate of a punching machine whereon the upper die that has been described is
attached and adapted to reciprocate in a vertical plane. At points that will adapt
them to axially align with the punches two cylindrical anvil blocks are seated in
suitably formed recesses in the lower die-block. The upper ends of these anvil
blocks are conically formed, and their upper faces are made of a suitable diameter
to receive and sustain the flanged ends of metal rivets.
Another feature of the improvement consists of a supporting device for the pail
ears, such device comprising two main portions. The one part is in the shape of
a comparatively thin strip of steel or resilient brass of suitable width, and made
parallel on the side edges, said strip being secured to the lower die block at one
end by means of a screw.
The spring plate is bent upwardly from this point for a suitable distance from
the screw where it is bent in a plane parallel with the surface of the die-block and
at a suitable height therefrom and terminates a short distance behind the anvil
blocks.
The
The spring plate at the point where it is bent in a horizontal direction is
thickened for the purpose of forming a screw hole therein, and upon it is placed
another spring plate of equal width which is secured thereto by a screw.
portion of the plate through which the screw passes being made of greater
thickness than the forward part thereof which is resilient.
The front portion of the spring plate is of equal thickness to the resilient part
mentioned and at a suitable distance from the forward end of the plate a flattened
projection or shoulder is formed on its lower side at such a distance from the free
front ends of the two spring plates as to serve as an abutment between said parts
to limit the introduction of a pail ear between the plates.
Upon the under side of the spring plate near the thickened part of the upper
spring plate, a guide box is secured, formed of a metal strip embracing the edges
of the spring plates so that the upper spring plate will be adapted to yield slightly
in a vertical plane, and be retained in alignment with and above the plate.,
To facilitate the insertion of the pail ears between the spring plates, the adjacent
corners on the front ends of said plates are rounded and when the ears are forced
between the clasping spring plates, one at a time, the ear thus introduced will be
held removably in such relative position as will align the perforations in the
projecting part of the ear, with the rivets that are seated on the anvil blocks and
also with the points of the punches.
The anvil blocks are preferably permanently magnetized so as to adapt them to
hold the rivets on their upper faces, secure from accidental displacement.
Rearward of the anvil blocks is transversely and removably secured a gauge
plate having depending opposite flanges on its ends, which are parallel on their
inner faces and embrace the side walls of the die block when in position thereon,
the gauge plate being retained by means of a set screw in one of the flanges at
any desired point on the die-block. The upper portion of the gauge plate has a
recess formed in it at the centre between its flanges to allow the front portions of
the spring plates to project through the recess and freely vibrate therein.
In operation, the dies being placed in a suitable machine so that they will co-act
as indicated, a pail of cylindrical or other suitable form, is introduced above the
magnetically-held rivets, until its top edge abuts against the front face of the gauge
plate below a spring clasped ear.
The upper die is now caused to descend, whereupon its stripper block will press

page_text: the ear toward the outer surface of the pail that is uppermost; the downward
motion of the upper die being continued until its pressure will cause the rivets to
penetrate the pail body and pass through the perforations in the ear, and when this
has been effected, and the pail body is prevented from being further depressed
by the anvil blocks, the stripper block will yield sufficiently to permit the cupped
ends of the punches to impinge upon the upper ends of the rivets and upset them
so as to produce a button set rivet head thereon, which will secure the ear, on the
pail body in a substantial and neat manner, by one stroke of the punching
machine.
The work of affixing ears upon sheet metal receptacles, can with the improved
dies, be rapidly and reliably effected, and by comparatively unskilled labor.
Dated this 14th day of November 1893.
°
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Machines for Rivetting Metallic Hollow Ware and
the like.
I, AIME LOUIS VUILLIER of Box 172, Millis, in the County of Norfolk,
and State of Massachusetts, United States of America, Machinist, 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 relates to improvements in dies for setting rivets and particularly
for the rivetting of ears upon pails and like articles of manufacture, and has for its
object to provide novel devices of the character indicated, which may be applied to
punching machines or drop presses and afford means to secure a pail ear in place on
a pail, by one stroke of the machine, in a neat and rapid manner.
To this end my invention consists in the construction and combination of parts, as
is hereinafter described and claimed.
Reference is to be had to the accompanying drawings, forming a part of this
Specification, in which
Figure 1 is a vertical sectional view of the upper die of the set of two dies that
co-act in a machine, the section being indicated by the line 1-1 in Figure 3.
Figure 2 is a vertical sectional view of the complementary lower die of the set,
taken on the line 2-2 in Figure 4.
Figure 3 is a side view of the upper die, broken away below opposite the arrow 3
in Figure 1.
Figure 4 is a side view of the lower die and ear-holding attachment, taken in the
direction of the arrow 4 in Figure 2.
Figure 5 is a reverse plan view of the upper die, partly broken away, and in
section on the broken line 5-5 in Figure 1; and
Figure 6 is a side view of a pail ear, of the style the dies are designed to affix
by rivets, upon a pail or other sheet metal receptacle that is to be furnished with
a bail handle.
Similar letters of reference indicate corresponding parts in the figures.
The die block A is by preference given a cylindrical form and from its upper
face a shank A' is axially projected, which part is to be inserted in a socket hole in
the vertically-reciprocating head of a power-actuated punching machine (not
shewn). Said shank which may be of any preferred peripheral shape, is shewn as
cylindrical.
The die block A is of a suitable length for its purpose and from or near the

page_text: longitudinal centre its lower portion is reduced in diameter, the part above the
shoulder a thus reduced being peripherally threaded to receive the interiorly-
threaded upper portion of a keeper sleeve B which is tubular and of a proper length
to afford support to other parts, an inwardly projecting flange b on the lower end of
the keeper sleeve serving as a seat for the stripper block C that is an important
feature of the upper die. The block C is circular at its upper end where it is
provided with a radial flange c of suitable thickness and of a diameter to loosely fit
within the keeper sleeve B and rest upon the flange b of said sleeve. Below the
flange c the body of the stripper block C is by preference reduced on the front and
rear sides and converged downwardly on the edges, so as to lighten this portion of
the block, which laterally elongated lower portion projects downwardly through the
circular opening in the sleeve B that is bounded by the inner edge of the flange b.
The lower end of the stripper block has its face shaped to conform with the side
surface of the ear D, that is exterior when affixed to a pail or like receptacle.
At an equal and correct distance from the longitudinal centre line of the die
block A and in its lower face, two round socket holes are formed of an equal depth
in parallel planes and of a suitable and like diameter, to receive the pair of similar
cylindrical punches e which fit neatly in said socket holes of the die block A and
are secured therein by set screws d'inserted in threaded holes in the sides of the
reduced cylindrical part of the die block and bearing on flattened seats made to
receive their ends on the sides of the punches near their upper ends which are in
contact with the bottoms of the socket holes in the die block. The punches e
project below the die block A sufficiently for effective service and their lower ends
have similar cone points e¹ formed thereon so as to adapt them to serve as rivetting
haminers, said faces being made slightly concave to more perfectly effect the neat
rivetting operation, which will be further mentioned. The stripper block C is
perforated from the upper side, at correct points to receive the portions of the
punches that project below the die block A, the diameter of said perforations
being so proportioned as to allow the punches to loosely fit therein, and thus adapt the
stripper block to slide on said punches. The perforations in the stripper block are,
preferably, made couiform near their lower ends to adapt them to conform to the
shape of the conical points of the punches.
The annular space afforded by the reduction in diameter of the body of the die
block A is occupied by a spring E that is represented as made of vulcanized rubber,
but which may be a spiral metallic spring, if preferred, said spring being intended
to normally hold the stripper block C down upon the flange b of the keeper sleeve B,
sufficient space being allowed between the lower face of the die block A and the
upper face of the stripper block C to permit the latter named piece to slide upward
and expose the normally enclosed points of the punches e when said stripper block
is made to impinge on some supported object below it. The keeper sleeve B is
furnished with spaced socket holes g designed to receive the end of a pin lever or
the tit of an ordinary spanner wrench for screwing the sleeve upon or off the die
block A, as may be required.
The lower die of the complementary set of two dies that constitute the improve-
ment, consists of an oblong rectangular metallic block G of suitable dimensions, said
block being mounted upon a proper base or bed plate of a punching machine
whereon the upper die that has been described is attached and adapted to reciprocate
in a vertical plane. At points that will adapt them to axially align with the
punches e two cylindrical anvil blocks h are seated in suitably formed recesses in the
lower die block G, these pieces of like form being neatly fitted in the cylindrical
cavities they occupy. The upper ends of the anvil blocks are conically formed
and their upper circular faces are made of suitable diameter to receive and sustain
the flanged ends of metal rivets i, as indicated in Figures 2 and 4.
Another feature of the improvement consists of a supporting device for the pail
ears D, such device comprising two main portions m, n. The part m is formed of a
comparatively thin strip of steel or resilient brass of suitable width and made parallel
on the side edges. The spring plate m is perforated at one end for the reception

page_text: m:
of a screw m', by which it is secured upon the die block G. The spring plate
is bent upwardly from this point toward the anvil blocks h, its upward inclination
terminating at a suitable distance from the screw m' where it is bent in a plane
parallel with the level surface of the die block G and at a correct height therefrom.
and terminates a short distance in rear of the anvil blocks, as shewn in
Figure 4. The spring plate m is thickened at the point m³ where it is bent to
render its forward part level, for the formation of a screw-hole therein and on
this portion of the spring plate another spring plate 7 of equal width is imposed.
and secured by a screw m³ inserted through a perforation formed in said plate n
near the rear end, the portion of the plate n through which the screw m³ passes.
being made of greater thickness than the forwardly projecting portion which is.
resilient. The front end portion of the spring plate n is made of equal thickness.
to that of the resilient part mentioned and at a suitable distance from the forward
end a flattened projection n' is formed on its under side, thus providing a shoulder
at the forward transverse edge of this projection at such a distance from the free
front ends of the two spring plates m n as will serve as an abutment to limit the
introduction of a pail ear D between the plates Upon the underside of the
spring plate m, near the thickened part n' of the upper spring plate n, a guide:
piece n² is secured, formed of a metal strip having two parallel flanges at right.
angles to the flat part between them, which embrace the edges of the spring
plates m, n, when the guide is secured transversely on the lower surface of the
plate m, as before mentioned, so that the upper spring plate n will be enabled to
yield slightly in a vertical plane and yet be retained in alignment with, and above,.
the plate m.
m n.
To facilitate the insertion of the pail ears D between the spring plates m n, the.
adjacent front edges of said plates are rounded, as shewn in Figure 4, and when the
cars D are forced between the clasping spring plates, one at a time, the ear thus
introduced will be held projected above the anvil blocks in such a relative position
as will align the perforations o in the projecting part of the ear, with the rivets &
that are seated on the anvil blocks and also with the lower coned points of the-
punches e. By preference, the anvil blocks are permanently magnetized, so as to
adapt them to hold the rivets i on their upper faces, secure from accidental.
displacement. Rearward of the anvil blocks is transversely and removably
secured a gauge plate I having depending opposite flanges p on its ends, which are
parallel on their inner faces and embrace the side walls of the die block G when in.
position thereon, a set screw p' in one flange serving to retain the gauge plate at.
any desired point on the die-block. The upper portion of the gauge plate I has a.
recess of the proper width and depth formed in it, at the centre between its flanges
to allow the front portions of the spring plates m n to project through the recess.
and freely vibrate therein.
In operation, the dies being placed on a. suitable machine, so that they will co-act.
as indicated, a pail body J of cylindrical or other suitable form, is introduced
above the magnetically-held rivets i until its top edge abuts against the front face.
of the gauge plate 1 and beneath a spring clasped ear D, as shewn in Figure 2..
The upper die is now caused to descend, whereupon its stripper block C will press
the ear D toward the outer surface of the pail body that is uppermost, and the:
downward motion of the upper die being continued until its pressure will cause the
rivets to penetrate the pail body and pass through the perforations o in the ear D.
and when this has been effected and the pail body is prevented from being further
depressed by the anvil blocks h the stripper block C will yield sufficiently to.
permit the cupped ends of the punches e to impinge upon the upper ends of the
rivets and upset them so as to produce a button set rivet head thereon which will.
secure the ear D on the pail body J in a substantial and neat manner, by one
stroke of the punching machine whereon the dies are secured and made to
conjunctively operate.
It will be seen that the work of affixing cars upon sheet metal receptacles can,

page_text: with the improved dies, be rapidly and reliably effected, and by comparatively
unskilled labor.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination, with the upper die having a plurality of punches and a
spring pressed stripper block loosely engaging said punches, of the lower die
having anvil blocks equal in number with the punches, substantially as described.
2. The upper composite die comprising a die block, spaced, depending and
parallel punches on the die block, a stripper block perforated to receive the punches
and held on the die block below it, a keeper sleeve screwed on the die block by its
upper end, flanged inwardly at its lower end and on which flange a radial flange on
the upper end of the stripper block seats, and a spring intervening between the
die block and stripper block, substantially as described.
3. The composite lower die comprising an elongated die block, upright anvil
blocks at the front of the block, a double plate spring clasping device on the die
block adapted to hold pail ears above the anvil blocks, and a gauge plate adjustable
on the die block, substantially as described.
4. The composite upper die comprising a cylindrical die block having an axial
shank on its upper face and threaded peripherally near the top, having its body
reduced diametrically below the thread, a cylindrical keeper sleeve internally
threaded and engaging therewith the thread on the die block, an inwardly
extending radial flange at the base of the keeper sleeve, two parallel depending
spaced punches secured in sockets in the under face of the die block and cone-
pointed at their lower ends, a stripper block perforated to slip on the punches and
radially flanged at its upper end to seat on the flange of the keeper sleeve, and a
spring encircling the reduced part of the die block and intervening between its
shoulder and the top of the stripper block, substantially as described.
5. The composite lower die composed of an elongated rectangular die block,
cylindrical anvil blocks seated in spaced vertical sockets at the front of the die
block, an adjustable gauge plate notched centrally on its upper edge, and a spring
clasping device composed of a bent lower spring plate secured at its rear end to the
top of the die block, an upper straight spring plate shorter than, and secured upon,
the lower plate by its rear end near the centre of said lower plate, and a guide
piece secured on the lower spring plate and having opposite vertical flanges loosely
embracing the edges of the upper spring plate, substantially as described.
Dated this 20th day of June 1894.
A. L. VUILLIER,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.