Improvements in Steam Hammers.
Year: 1892

page_text: Date of Application, 11th Nov., 1892
Complete Specification Left, 17th Mar., 1893-Accepted. 13th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Steam Hammers.
We FREDERICK HARVARD STACEY, of Heeley Bridge Foundry, Manu-
facturer, and HENRY WILKINSON, of same address, Engineer, both of Sheffield
in the County of York, do hereby declare the nature of our invention to be as
follows:-
This invention of improvements in steam hammers relates more particularly to
the valve motion of such hammers, the object being to reduce the number of parts.
and thus simplify the construction, and also to improve the action of same in its.
application to "hand" and "selfacting" motions.
In carrying out our invention we propose to fix upon the tup a tapered, inclined
or curved block forming a path, and to the vertical valve rod we attach the short
end of a lever, the fulcrum being carried upon the hammer standard, and constructed
so that it can be readily raised and lowered.
The short end of the lever is curved upwards and terminates with a roller which
rests against the inclined or curved path before mentioned, being held thereto by
the action of a spring. The opposite end of the lever terminates with a handle to
enable it to be worked by hand when so desired.
The fulcrum on which the lever works is the pin of an eccentric upon a short.
shaft passing through the standard, the other end having a hand lever attached by
which the shaft and the eccentric is turned, and the fulcrum raised or lowered.
The face of the inclined path is formed so as to admit steam to the cylinder, and
to shut off the same at certain desired points by which the efficacy of the hammer
is improved.
If the hammer is only required as a selfacting or tilting hammer the long end.
of the lever may be dispensed with.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Steam Hammers.
We, FREDERICK HARVARD STACEY, of Heeley Bridge Foundry, Manu-
facturer, and HENRY WILKINSON, of same address, Engineer, both of Sheffield
in the County of York 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 of improvements in steam hammers relates more particularly to
the valve motion of such hammers, the object being to reduce the number of parts
and thus to simplify the construction, as well as to improve the action of such
motion in its application to "hand" and "selfacting" valve motions.
Our invention is illustrated in the annexed sheet of drawings in which like letters
of reference indicate like parts in both figures.
Fig. 1, is a side elevation of our improved valve motion as applied to a steam
hammer.
Fig. 2, is a plan of same, with standard or side plate shown in section.
In carrying out our invention we fix upon the tup T, a tapered or inclined block
or path A, and to the vertical valve rod C, we attach the short end of a hand
lever B, its fulcrum D, being carried by the hammer standard S, and so constructed

page_text: that it can be readily raised and lowered in position for the purpose of varying the
length of stroke of the tup.
This alteration of position is accomplished by making the fulcrum D, of the pin
of an eccentric J, fixed upon or solid with a short shaft G, passing through a
boss K, upon the standard S; the shaft G, is provided with a hand lever H, by
which it is turned, and the eccentric pin or fulcrum raised or lowered.
The short end of the lever B, is curved upwards and terminates with a roller
preferably, which rests against the inclined face of the path A, before mentioned,
being held thereto by the action of the compressed spring F, or by a weight or its
equivalent. The opposite end of the lever terminates with a handle, by which the
valve may be worked by hand when desired.
The inclined face of the path A, is preferably of two angles, so calculated and
arranged that the valve is operated at certain points of the stroke, so as to increase
the efficacy of the blow, and to save steam.
If the hammer is constructed for tilting or like work only requiring a self acting
motion, the long end of the lever B, with the handle may be dispensed with.
Having now particularly described and ascertained the nature of our inven
tion and the manner in which the same is to be or may be performed, we declare
that what we claim is :-
1-In steam hammers, a valve motion consisting of an upwardly curving lever B,
carried upon an adjustable fulcrum D, formed by the pin of an eccentric J, on a
shaft G, operated by a hand lever H; the lever B being connected with the valve
spindle C, and moved either by hand or by a facing or path connected with the
tup, substantially, as hereinbefore described with reference to the drawings.
2-A valve motion for steam hammers consisting of a lever B, with adjustable
fulcrum D, the opposite end provided with antifriction roller E, pressed by the
action of a spring F, or its equivalent against the face of a guide or path A,
attached to the tup T, the said path having a face of two angles for the purpose
specified, substantially as hereinbefore described and illustrated.
Dated the 16th day of March 1893.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicants.