improvements in spring rower hammers,
Year: 1898

page_text: Date of Application, 26th July, 1898
Complete Specification Left. 12th Apr. 1899-Accepted 22nd July 1899
improvements in spring rower hammers,
We, HUGO ROSENTHAL and RUDOLF SCHMIDT, both of Columbus-Street 100,
Vienna, in the Empire of Austria, do hereby declare the nature of this invention
to be as follows:-
The improvements forming the object of this invention relate to a spring and
power hammer wherein the arrangement of the carriage spring such that the
various spring blades or plates constituting the same are able to conform during
operations to the radius of flexion by reason of their ends sliding one upon the
other moreover the connecting rod is so arranged that besides transmitting
motion it takes up the back action or recoil of the blow, and finally the arrange-
ment of the frame is such as to allow the forging and levelling of longer pieces
than heretofore from the operative's seat.
In the accompanying drawings which illustrate a spring and power hammer
provided with our improvements for forging steel and iron, Figure 1 is a side
view, Figure 2 a front view, Figure 3 a plan with part omitted for clearness,
and Figure 4 is a view of the spring connecting rod.
As shown the hammer consists principally of the frame A, the anvil support B,
the driving gear with the eccentric C, the connecting rod D), the carriage spring E,
the stem and the disconnecting gear G.
The frame or standard A is provided at a height corresponding to the top of
the anvil with a large longitudinal hole a through which long blanks or pieces can
be inserted from the seat of the operative under the hammer head in order to be
operated upon, so that they can be readily hammered down, elongated and flat-
tened, without the hammerman having to leave his seat in front of the hammer
and without being compelled to introduce long pieces sidewise under the hammer,
which is an important advantage when forging heavy pieces.
The anvil support B carries the anvil above (which is recessed to receive
the stems of various shapes c keyed or wedged therein) and is intended to be inter-
changeable in the frame A and to bear with its projection d upon the projec-
tion of the frame.
The eccentric C is adjustable, with the aid of longitudinal openings and fixing
screws, upon a disc keyed on the driving shaft c, so that its throw may be made
larger or smaller. The upper part of the eccentric ring f is furnished with a
projection serving to fix the spring connecting rod D. This rod consists of
two outwardly curved spring blades or plates and h (Figure 4) fixed by means
of screws to the fork at the top and to the projection g at the bottom. The
spring connecting rod 1) is adjustable lengthwise additional holes being provided
in the fork i, and piece y for this purpose and the rod D serves morcover for
actuating the carriage spring E and at the same time for receiving the recoil of
the hammer blow on the driving shaft.
The carriage spring E consists of a number of spring bars or plates laid one
upon the other in the spring box k and firmly screwed together, the number of

page_text: these bars depending upon the strength of the blow and the weight of the hammer.
The end of the front and longest elastic or flexible part of the carriage spring
is entered in a clamp m and connected thereto by a screw bolt v passing through
the spring and the clamp and in order that the spring may expand in such clamp
during operations owing to the flexion occurring, the hole through which the
screw bolt passes and which is formed throughout the spring is oblong instead
of round and as the spring fits accurately but easily in the clamp the screw bolt
cannot tightly clamp the spring and the clamp together but merely holds the end
of the spring in the said clamp in order to prevent the former from coming out
of the same.
The lateral expansion of the spring out of the clamp is prevented
by a lateral flange formed on the latter. Furthermore, the carriage spring E
is provided with two other clamps n and n¹ which have for their object to prevent
the various bars from separating. These two clamps are however arranged in
such a manner as not to fix the spring bars too tightly together and hence allow
them to expand according to the flexion occurring during the hammering opera-
tions. The carriage spring E is moved like a lever by the spring connecting
rod D actuated by the eccentric C.
The stem F of the hammer carries the striking part e keyed and secured
therein and is moved up and down by the spring E passing through a hole o
formed in the upper part of the same; this stem is guided by a prismatic guide
fixed in the upper arm of the frame A.
The disconnecting mechanism G which is subjected to the action of a counter-
weight or spring consists of a treadle o and of the belt fork p fixed thereto. By
depressing the treadle o the fork p is shifted and the driving belt is passed on
from the loose to the fast pulley g.
When the treadle is released the counter-
weight or spring brings the driving belt automatically back on to the loose
pulley r. To produce weak and slowly succeeding blows the driving belt is so
adjusted by means of the treadle as to run partly on the loose and partly on the
fast pulley.
CRUIKSHANK & FAIRWEATHER,
Chartered Patent Agents, 62, St. Vincent Street, Glasgow,
Agents for the Applicants.
Improvements in Spring Power Hammers.
We, HUGO ROSENTHAL and RUDOLF SCHMIDT, both of Columbus Street 106,
Vienna, in the Empire of Austria, 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 improvements forming the object of this invention relate to a spring and
power hammer wherein the arrangement of the carriage spring is such that the
various spring blades or plates constituting the same are able to conform during
operations to the radius of flexion by reason of their ends sliding one upon the
other; moreover the connecting rod is so arranged that besides transmitting
motion it takes up the back action or recoil of the blow, and finally the arrange-
ment of the frame is such as to allow the forging and levelling of longer pieces
than heretofore from the operative's seat.
Referring to the drawings filed with the Provisional Specification, which illus-
trate a spring and power hammer provided with our improvements for forging
steel and iron, Figure 1 is a side view, Figure 2 a front view, Figure 3 a plaň

page_text: with part omitted for clearness, and Figure 4 is a view of the spring connecting
rod.
As shown the hammer consists principally of the frame A, the anvil support B,
the driving gear with the eccentric C, the connecting rod D, the carriage spring E,
the stem and the disconnecting gear G.
The frame or standard A is provided at a height corresponding to the top of
the anvil with a large longitudinal hole a through which long blanks or pieces can
be inserted from the seat of the operative under the hammer head in order to be
operated upon, so that they can be readily hammered down, elongated and flat-
tened, without the hammerman having to leave his seat in front of the hammer
and without being compelled to introduce long pieces sidewise under the hammer,
which is an important advantage when forging heavy pieces, and this hole a
permits of shapes hereinafter referred to being inserted and wedged to the anvil b
the wedge being easily driven out through the hole a
The anvil support B carries the anvil b above (which is recessed to receive
the stems of various shapes c keyed or wedged therein) and is intended to be inter-
changeable in the frame A and to bear with its projection d upon the projec-
tion of the frame.
The eccentric C is adjustable, with the aid of longitudinal openings and fixing
screws, upon a disc keyed on the driving shaft e, so that its throw may be made
larger or smaller. The upper part of the eccentric ring f is furnished with a
projection y serving to fix the spring connecting rod D. This rod consists of
two outwardly curved spring blades or plates h and h (Figure 4) fixed by means
of screws to the fork at the top and to the projection g at the bottom. The
spring connecting rod D is adjustable lengthwise, additional holes being provided
in the fork and a piece y for this purpose, and the rod 1 serves moreover for
actuating the carriage spring E and at the same time for receiving the recoil of
the hammer blow on the driving shaft.
The carriage spring E consists of a number of spring bars or plates laid one
upon the other in the spring box and firmly screwed together, the number of
these bars depending upon the strength of the blow and the weight of the hammer.
The blade spring E is placed in its casing and has a cover placed over the casing
and secured to it by means of bolts and nuts to retain the spring E within said casing.
The end of the front and longest elastic or flexible part of the carriage spring
is entered in a clamp m and connected thereto by a screw bolt v passing through
the spring and the clamp and in order that the spring may expand in such clamp
during operations owing to the flexion occurring, the hole through which the
screw bolt passes and which is formed throughout the spring is oblong instead
of round and as the spring fits accurately but easily in the clamp the screw bolt
cannot tightly clamp the spring and the clamp together but merely holds the end
of the spring in the said clamp in order to prevent the former from coming out
of the same. The lateral expansion of the spring out of the clamp is prevented
by a lateral flange formed on the latter. Furthermore, the carriage spring E
is provided with two other clamps n and n¹ which have for their object to prevent
the various bars from separating. These two clamps are however arranged in
such a manner as not to fix the spring bars too tightly together and hence allow
them to expand according to the Hexion occurring during the hammering opera-
tions. The carriage spring E is moved like a lever by the spring connecting
rod D actuated by the eccentric C.
The stem of the hammer carries the striking part e¹ keyed and secured
therein and is moved up and down by the spring E passing through a hole o
formed in the upper part of the same; this stem is guided by a prismatic guido
fixed in the upper arm of the frame A.
The disconnecting mechanism G which is subjected to the action of a counter-
weight or spring consists of a treadle G and of the belt fork p fixed thereto. By
depressing the treadle o the fork p is shifted and the driving belt is passed on
from the loose to the fast pulley q. When the treadle is released the counter-

page_text: weight or spring brings the driving belt automatically back on to the loose
pulley . To produce weak and slowly succeeding blows the driving belt is so
adjusted by means of the treadle as to run partly on the loose and partly on the
fast pulley.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is:
-
1. In spring and power hammers the arrangement of a carriage spring E
whereby the bars or blades of which it is composed are free, when the spring is
deflected, to move one upon the other endwise in both directions in a spring
box fitted with a cover and above its fulcrum s without being hindered or
impeded by any clamping or fixing means, which increases the durability of the
spring bars and intensifies the blows as compared with spring and power ham-
mers hitherto constructed.
2. The arrangement of the spring connecting rod D consisting of two curved
spring bars or blades and ¹ and having for its object to transmit motion and
to receive or take up the recoil caused by the blows struck by the hammer and
exerted on the driving shaft; this connecting rod being adjustable lengthwise
by shifting the fixing screws t and thin the fork and bar and g respectively,
corresponding to the increase or decrease of the eccentric's throw.
3. The arrangement of a break a in the frame or standard A whereby long
pieces or parts can be introduced under the hammer from the seat of the opera-
tive in front of the said hammer, so that they may be forged and flattened with
ease without the operative having to change his seat, which produces a great
economy of time when working on large forgings, the shapes c being inserted
ongitudinally in the anvil, as the wedge securing the same in the said anvil can
be readily driven out of the hole a provided for this purpose in the frame.
Dated this 11th day of Avril 1899.
CRUIKSHANK & FAIRWEATHER,
Chartered Patent Agents, 62, Saint Vincent Street, Glasgow,
Agents for the Applicants.