Year: 1886

page_text: I, LÉON DELALOE, Civil Engineer of No. 11 Rue du Maine, Paris, in the Republic
of France, do hereby declare the nature of this invention to be as follows:-
My Invention relates to hydraulic machines used for rivetting, punching or
shearing purposes and worked either by hand, power or pressure from accu-
mulators.
Its object is to economize the motive power by increasing both the rapidity of
the preliminary operations and the efficacity of the work effected.
It consists in very rapidly. bringing into contact by hand or by means of a
suitable mechanism, in similar machines and notably those of or based on what is
known as the Tweddell system, the performing tool (puncheon, shear etc,) and the
material to be operated upon.
This result is obtained by means of a hand lever or of a crank actuating a top
piston provided with a mechanism analogous to that of the obturator of a breech-
loading gun, and of a lower piston which is, on the lever being depressed, pushed
downward by the action of the top piston and of an intermediary rod situate
between the two said pistons but independent from each of them.
The performing tool is attached at the bottom of the lower piston and, on its
reaching the material to be operated upon, the top piston is locked by means of the
obturator arrangement into its lower position and the water under pressure admitted
between the two pistons.
The pressure of the water then exerting itself between the two pistons, the top
one of which has been rendered fixed, the lower piston is forced downward and
carries with it the performing tool which effects its work.
The water pressure being then relieved and the obturator of the top piston
unlocked if, the said top piston is raised by means of the lever or crank, and the
bottom piston which is subjected to an external atmospheric pressure will follow it
in its upward motion until it reaches its former position when it is again ready for
a new performance.

page_text: Improvements in Shearing, Punching, and Rivetting Machines.
I, LÉON DELALOE, Civil Engineer, of No. 11 Rue du Maine, Paris, 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 :-
The object of my Invention, is to economize the motive power by increasing the
rapidity of the preliminary and other operations and the efficiency of the work.
It consists, principally, in very rapidly bringing into contact, by hand or by
means of a suitable mechanism or contrivance, in similar machines and notably
those of or based on what is known as the Tweddéll system, the tool (puncheon,
shear or stamp) and the material to be operated upon.
This is effected by quickly lowering the piston, by means of a lever or a crank
actuating a mechanism similar to that of the obturator of a breech loading gun or
any other contrivance giving the same results, until the tool touches the material.
The work is then performed by the mere opening of the cock or distributor which
brings the water from the accumulator.
In the accompanying drawing:
Fig. 1 is a vertical section illustrating the quick-motion mechanism for lowering
and raising the tool.
i
J is the lever working, by hand, the piston F up and down.
G is a rod to which are attached the lever J at its top and the piston F at its
bottom; its thread is cut so as to leave three equilateral projections p. p. p. and
three equilateral flats q q q.
H is a screw mounted at the top of cylinder D in which it is free to turn; its
thread is similarly or correspondly cut to that of the rod G, leaving three equilateral
projections and three equilateral grooves.
I is a handle keyed on screw H; by means of this handle the projections of
screw H may be brought to face the flats of the rod Q in which case the piston F
can be freely moved up and down; or the projections of the said screw may be
screwed into those of the said rod, the grooves of the former facing the flats of the
latter, in which case the piston F may be secured into any position.
E piston carrying the tool.
The space intervening between the pistons
and F is filled with water.
When the distributor C is shut, the piston E will follow all the motions of the
piston F; this synchronism could also be obtained by connecting the two pistons
by means of a rod but this is not necessary.
Fig. 2 is a modification of Fig. 1. In this view, the plain piston rod G is fastened
to a unique piston E and passes through a stuffing-box which is provided in the
cover of cylinder D.
A is the pressure water inlet.
B is the water outlet or discharge pipe.
K is an open tank fixed on pipe B and maintained full of water.
Fig. 3 is a horizontal section illustrating the distributor of water.

page_text: If it is proposed to rapidly lower the piston E and consequently the tool O which
is attached to it, the opening or port A will be closed and B opened by means of
the distributor C and the lever J will be depressed until the rivet comes into
contact with o¹; during that time, the cylinder D gradually fills with water supplied
from the tank K, through the port B. If now the port B is closed and the port A
opened, the water under pressure is then admitted on the top of piston E and will,
causing the latter to descend, produce the crushing effect required for the operation.
Things are brought back ready for starting afresh by closing port A, opening
port B, and lifting the lever J; in so doing, a quantity of water is expulsed equal
to the volume of water under pressure which was admitted during the previous
operation, and all things are brought again in the same relative positions as they
were before.
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:
The arrangements in shearing, punching and rivetting machines for rapidly
bringing into contact the operating tool and the material to be operated upon so as
to economize time and motive power, such arrangements consisting in combinations
of pistons, levers, locking actions, distributors and feeding water tanks substantially
as hereinbefore described and illustrated.