Improvements in Forging Machines or Power Hammers.
Year: 1888

page_text: Date of Application, 3rd Nov., 1888
Complete Specification Left, 11th July, 1889-Accepted, 17th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in Forging Machines or Power Hammers.
I, CAMILLE FRIEDERICH, of 43 rue de Turbigo, Paris, France, Miller, do hereby
declare the nature of this Invention to be as follows :-
My invention relates to an improved construction of forging machine, or power
hammer which is characterized by the combination with a hammer forming
part of a rigid and moveable frame, receiving a rising and falling motion, of an
arrangement of straps whose action remains constant whatever may be the depth of
fall of the hammer.
The machine comprises a base or foundation on which are mounted on the one hand,
the anvil for the hammer, and on the other hand, a column for supporting the various
organs for transmitting motion. This motion is imparted by a belt to the driving
pulley, which is connected to, or formed in a piece with, a plate or disc which is
employed to convert the continuous motion of the general gearing into a reciprocating
motion for the hammer. For this purpose the plate or disc carries at any point,
eccentric to its axis, a stud or pin capable of rotating in a block travelling in an
articulated slide guide. The stud or pin by revolving with the plate or disc drives the
block which communicates to the slide guide a reciprocating motion which is
transmitted to a shaft forming part of the said slide guide. On this shaft is mounted
a pulley over which passes a strap which, while loose when at rest, can be tightened
or stretched by means of a stretcher, to transmit motion to another pulley. This latter
pulley therefore receives a reciprocating motion which it transmits to a sector mounted
upon the same shaft as is the pulley. Upon this sector are arranged three straps
which are connected to the hammer, and one of which is directly connected thereto,
the other two being connected to a rigid and moveable frame, forming part of such
hammer, and capable of sliding in vertical fixed guides. The first strap is fixed to
the sector and to the stock or heavy mass connected to the hammer proper. The other
straps which may be replaced by a single strap are fixed to this sector and to a
regulatable cross rod, forining part of the rigid and moveable frame which is itself
connected to the stock or heavy mass. The regulation is effected by means of double
nuts, which allow of the cross rod being raised or lowered at will, relatively to the
frame, to compensate for the lengthenings or shortenings of the straps.
The hammer, when at work, is raised sufficiently slowly by the action of the first
strap, and this hammer itself, in its upward stroke, raises the frame which works the
straps through the cross rod. On the descent, the hammer is worked, not only by its
weight but also by the action of the straps connected to the crossbar. According to
the arrangement just described it will be readily understood that the depth of fall of
the hammer remains always the same, at least within certain limits whatever may
be the dimensions of the piece to be forged. The frame and the haminer ascend to a
higher point of departure by simply sliding the strap upon the stretcher.
This stretcher is worked by means of a lever carrying at one of its extremities a
counter weight, and at the other a handle. A pawl engaging, at will, in a ratchet
maintains this lever in position. The said lever may also be employed by lifting the
pawl, and holding it by hand, when it is desired to effect a working which requires
frequent movement of the piece to be forged.
The motion of the transunitting pulley, above mentioned, may be obtained by a
connecting rod and a crank, instead of by the movement of the block and the slide
guide.
1000

page_text: COMPLETE SPECIFICATION.
Improvements in Forging Machines or Power Hammers.
I. CAMILLE FRIEDERICH, of 43 Rue de Turbigo, Paris, France, Miller, 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,
reference being had to the accompanying drawings and to the letters and figures marked
thereon, that is to say :-
My invention relates to an improved construction of forging-machine, power-
hammer, or more simply tilt-hammer, which is characterised by the combination of a
hammer forming part of a rigid and moveable frame receiving a rising and falling
motion, with an arrangement of straps whose action remains constant whatever may be
the drop of the hammer.
And in order that my Invention may be readily understood I proceed to describe
the same with reference to the accompanying drawings, in which:
Figs. 1 and 3 are opposite views, in side elevation, of the machine.
Fig. 2, a front elevation taken on the side of the hammer.
Figs. 4 and 5, detail views of side and front of the characteristic device or organ of
the machine, for driving the hammer.
The same letters of reference indicate the same parts throughout the drawings.
The machine comprises a base or foundation X, on which are mounted, on the one
hand, the anvil D for the hammer, and on the other hand, the column V for supporting
the various devices for transmitting motion. This motion is imparted by a strap y
which drives the driving pulley P connected to, or formed in a piece with, a plate or
disc O which is employed to convert the continuous motion of the general gearing
into a reciprocating motion for the hammer. For this purpose the plate or disc O
carries at any point, eccentric to its axis O', a stud or pin N capable of rotating in a
block M travelling in a
guide L pivotted at L'. The stud or pin N by revolving with
the plate or disc Ŏ drives this block M which communicates to the guide La recipro-
cating motion which is transmitted to the shaft L' forming part of the said guide.
On this shaft L', actuated as stated by a reciprocating movement, is mounted a
pulley K over which passes a strap J which, while loose when at rest, can be tightened
or stretched, by means of a stretcher Q, to transmit to the pulley I the motion of the
pulley K. This pulley I therefore receives a reciprocating motion which is transmitted
to a sector H mounted upon the same shaft as the pulley I. Upon or over this sector H
are arranged three straps H¹, H", H", which are connected to the hammer, the first
directly, the other two through the frame G, forming part of such hammer and
capable of sliding in vertical fixed guides F. The strap His fixed to the sector at hand
at to the stock or heavy mass A connected to the hammer proper A by means of a
key B. The straps H" which may be replaced by a single strap, are fixed at h¹¹ to
the sector, and at to an adjustable cross-piece G forming part of the rigid and
moveable frame G which is itself connected to the stock or heavy mass A¹. The
adjustment is effected by means of an arrangement of double nut Z which allows of
the cross-piece G₁ being raised or lowered at will, relatively to the frame G to
compensate for the lengthening or the shortening of the straps.
During work the hammer is raised sufficiently slowly by the action of the strap H'
and this hammer itself, in its upward stroke, raises the frame G which forms part
therewith and works. the straps H₁ through the cross-piece G¹. On the descent, the
hammer is worked, not only by its weight, but also by the action of the straps H
connected to the cross-piece G¹. According to the arrangement just described it will
be readily understood that the drop of the hammer remains always the saine whatever
may be the dimensions of the piece to be forged, at least within certain limits. The
frame and the hammer ascend to a higher point of departure by simply sliding the
strap upon the stretcher Q.
This stretcher is worked by means of a lever R carrying at one of its extremities a
counter-weight S and at the other a handle R¹. A pawl U engaging at will with a

page_text: ratchet T maintains this lever in position. When it is desired to effect a working
which requires frequent movement of the piece to be forged, the pawl U is disengaged
and the said lever maintained by hand.
The motion of the transmitting pulley K may be obtained by means of a connecting-
rod and crank instead of by the movement of the block and the slide guide.
Having now particularly described and ascertained my invention and in what
manner the same is to be performed, I claim :-
1. The improved forging-machine, power-hammer, or tilt-hammer, mounted on a
column and characterised by the combination of a hammer forming part of a rigid
and moveable frame receiving a rising and falling movement, with an arrangement of
straps connected to a sector, or to a pulley, actuated by a reciprocating motion, the
action of said straps remaining the same whatever may be the drop of the hammer,
substantially as described and shewn by the drawings.
2. In combination with the constitutive devices of the said machine, the
employment of a plate or disc carrying an eccentric stud or pin turning in a
block capable of sliding in a guide for producing the reciprocating motion of the
sector, or of the pulley, actuating the hammer, substantially as described and shewn
with reference to the annexed drawings.
Dated this 11th dar of July 1980
July
Deted this 11th
day
of Jul 1980
ERNEST DE PASS,
68, Fleet Street, London, Agent for the Applicant.