and Bolt Heads, and for the like Purposes.
Year: 1887

page_text: Date of Application, 13th June, 1887
Complete Left, 10th Mar., 1888
Complete Accepted, 18th May, 1888
and Bolt Heads, and for the like Purposes.
I, JOHN PATRICK O'DONNELL of Cambridge Road, New Malden in the County of
Surrey, Engineer and Patent Agent (a communication from Nicolas Frébault of Ivry
in the Republic of France) do hereby declare the nature of this invention to be as
follows:-
My invention has reference to improvements in Hydraulic Machines for the
stamping of rivet and bolt heads, for the clenching of metal pins, and may be used
for general stamping purposes.
It consists of two vertical cylinders A and C-In the upper end of the piston B of
the large cylinder A is a receptacle for the material to be stamped-a framework is
fixed above the piston B which carries the Die.
To the left or whichever side is desirable 1 fix a cylinder C, the piston D of which
actuates an arm, one end working immediately underneath the material to be
stamped.
On the other side of the large cylinder I fix the controlling gear, for the dis-
tribution and pressure of water, and also for adjusting an inclined or wedged shaped
block, which determines the length of the rivet or stamped article.
The action of my apparatus may be briefly described as follows--
By Hydraulic pressure the Piston B of the larger cylinder A is forced upwards, so
that the material to be stamped enters the Die immediately above it.
The action of the Piston in Cylinder C, which as before described gives motion to
the arm, to which it is connected, automatically discharges the rivet or stamped
article on the downward passage of Piston B.
These machines can be used not only for clinching, rivetting &ct.; but can be
usefully employed for stamping a number of sheets of iron, steel, copper &ct., as well
as for similar treatment of materials used in the goldsmith's and other trades.
Dated this 11th day of Juna 1887

page_text: COMPLETE SPECIFICATION.
Improvements in Hydraulic Machines for Rivetting, Stamping Rivet
and Bolt Heads, and for the like Purposes.
I, JOHN PATRICK O'DONNELL of Cambridge Villa, Cambridge Road New Malden
in the County of Surrey, Engineer and Patent Agent (which invention has been
communicated to me by Nicolas Frébault, Engineer of Ivry in the Republic of
France) 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 has reference to improvements in Hydraulic Machines for the
stamping of rivet and bolt heads, for the clinching of metal pins, and for general
stamping purposes.
The two most general uses, to which it is applicable that of striking or stamping
bolt and rivet heads, & that of paring and trimming, I will describe in the following
specification, the latter form of the machine being designed to complete the work
commenced by the former.
The advantages which this machine has over others used for similar purposes, are
that in bolt & rivet making, it works quicker (the production being greater) it is
cheaper, and by its construction it is more suitably adapted for the treatment of
articles, of the goldsmith's trade, than the frictional machines with monkey block.
Figure 1 is a view of that form of my invention employed for paring or trimming
the rivet or other like article. Figure 2 is a vertical section of Figure 1 on C. D.
Figure 3 is a plan on top of Figures 1. 2. Figure 4 is, a view of a. b. Figure 2.
Figure 5 is an elevation of the striking or rivetting machine. Figure 6 is a vertical
section of Figure 5, through A. B and C. D, according to Figure 7. Figure 7 is a
plan of Figure 5.
The Hydraulic striking or rivetting machine is worked under the pressure of an
accumulator see Figures 5. 6 & 7.
In Figure 6, A is the Hydraulic cylinder receiving the piston B in the upper end
of which piston, is a receptacle for the material to be stamped, the water is supplied
to the cylinder A on its underneath side by pipe L, and on its uppermost side by
pipe M.
Cis a small cylinder (Figure 6, employed for driving out, the rivet, bolt or
the like) receiving a double rod piston D, which is in permanent communication with
the accumulator at its lower end.
The following letters of description refer to Figures 5. 6 & 7 which are views of
the striking or rivetting machine.
The similar letters in Figures 1. 2. 3. 4 marked with an apostrophe indicate
approximately similar parts of the paring or trimming machine.
D, the driving out piston is connected to the driving out lever E, by means of
rods. E, the driving out lever, rests on a collar made of two pieces fitted to
the piston rod B and fixed by means of four screws. This lever is actuated by
piston D.

page_text: F, which is the supply apparatus, is preferably made of bronze instead of cast iron,
& consists of a slide box, the water under pressure being supplied by a pipe about
17 inches internal diameter. The supply apparatus carrying the slide table should
be soldered with tin.
Go,
is the girder or stay carrying the die or driving hammer and which may be
raised or lowered according to the length of the article to be operated upon.
H is the sliding guide of piston B destined to maintain it on the same plan. I, is
the regulating wedge which regulates the exact length of rivet or bolt to be struck,
the wedge regulating apparatus is fixed to the collar, holding the driving out lever,
by means of two stays. J is the water supply pipe over small piston. K is the water
supply pipe under small piston.
Lis the water supply pipe under large piston. M is the water supply pipe over
large piston. N supply water pipes under pressure.
The action of my apparatus is as follows. By Hydraulic pressure the piston B of
the larger cylinder A is forced upwards, so that the material to be stamped enters the
die immediately above it.
When the stroke has been performed (the admission of water, which has taken
place by means of the slide valve of the supply apparatus, under the piston B) by
reversing the slide action, water is admitted upon piston B which causes it to go
down-By the same operation water has been admitted upon the small driving out
piston D, in cylinder C, and D being attached to the driving out lever E, the rivet or
the like is automatically discharged, after the stamping operation is completed.
The slide being brought back to its dead point, the constant pressure under piston D
will bring it back to its dead point.
In the paring or trimming machine Figures 1. 2. 3. 4, A' is a hydraulic cylinder
fixed by means of two stays, to the frame, and supporting on a bracket the supply
apparatus.
B' is the piston carrying the punch which latter is fitted to the piston by a conical
piece I' is a regulating ring for the course of the piston on its ascent, regulating
the length of article to be treated and also acting as a guide for the piston, and
maintaining it always on the same plan.
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
1stly. The construction, combination and general arrangement of parts, forming
my improved apparatus, for rivetting, stamping rivet and bolt heads, and the like,
by hydraulic pressure, substantially as described and as illustrated in Figures 5. 6. 7.
2ndly. The construction combination and general arrangement of parts, forming
my improved apparatus (intended to complete the treatment of articles shaped by my
apparatus of the first claim) substantially as illustrated in Figures 1. 2. 3. 4.
Dated this 10th day of March 1888.