Improvements in the Valve-motion of Steam Hammers.
Year: 1899

page_text: Date of Application, 20th Apr., 1899
Complete Specification Left, 20th Jan., 1900-Accepted, 24th Feb., 1900
PROVISIONAL SPECIFICATION.
Improvements in the Valve-motion of Steam Hammers.
We, CHARLES Ross, of Heeley Bridge Foundry, Sheffield, in the County of
York, Ironfounder, and HENRY WILKINSON, of the same address, Engineer, do
hereby declare the nature of our invention to be as follows: -
Our invention is to simplify the mechanism of the valve-motion of steam
hammers, to reduce the wear and tear of certain parts thereof, and thus to render
the action more effective and certain.
It refers more particularly to valve motions actuated by the movement of the
hammer head and a straight lever bar pivotted thereto, but it may also be used
in combination with a hand worked lever.
Upon the free end of the said lever bar we place two sleeves, the inner one pin-
jointed to the valve spindle and the outer one pivotted to the cranked end of a
regulating lever which forms the fulcrum of the motion and which can be
adjusted in height by moving the lever, thus regulating the position of the
valve as desired.
It has heretofore been usual to employ one long sleeve connected by links to
the fulcrum pin, which our invention enables us to dispense with and the accom-
modating action of the two sleeves permits of the use of a rigid fulcrum pin in
such position as to be in proper relation with the joint on the valve spindle,
avoiding the rapid wear at each end of a single sleeve and the undue side thrust
upon the valve spindle.
When it is desired to use a hand-lever in combination with the above mechan-
ism, to enable certain distinct blows to be given when required, we extend the
valve spindle downwards beyond the inner sleeve before mentioned, to which it
is connected by a pin joint, and place upon such extension a coiled spring,
bearing upon an adjustable collar at its lower end, and against the joint and a
fixed collar at its upper end.
Underneath this extension, I arrange the short end of a hand lever fulcrumed
to the hammer side or other convenient part of the frame.
When working automatically, the valve spindle moves vertically up and down.
and clear of the lever end, but by pressing down the lever its short end is raised
and coming in contact with the end of the spindle, lifting the valve at once to the
desired position to give a dead blow, or other desired blow.
When the hand lever is withdrawn, the coiled spring forces the spindle into its
normal position for automatic action.
1
1011
1 1000

page_text: Improvements in the valve-motion of Steam Hammers.
We, CHARLES Ross, of Heeley Bridge Foundry, Sheffield, in the County of
York, Ironfounder, and HENRY WILKINSON, of the same address, Engineer, 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:.
Our invention is to simplify the mechanism of the valve-motion of steam
hammers for the purpose of reducing the wear and tear of certain parts thereof,
the result being to render the action of the said valve-motion more certain, and
consequently the blow of the hammer more reliable.
The invention refers more particularly to valve motions actuated by the move-
ment of the hammer head or tup, from a lever bar pivotted thereto, and it may
also be used in combination with a hand lever to give single blows when required.
In order that our invention may be clearly described and understood, we have
illustrated it in the annexed sheet of drawings, similar letters indicating similar
parts in all the figures.
Fig. 1 is an elevation of the automatic valve motion constructed according to
our invention.
Fig. 2, a plan of same.
Fig. 3, elevation of automatic valve-motion in combination with a hand lever
for giving single blows.
In carrying out our invention as a self acting valve motion shown in Figs 1
and 2, we pivot to the hammer head or tup T, a straight lever bar A, and upon
the free end thereof we place two sliding sleeves B¹ and 132, the inner one B³,
being pin jointed at F, to the vertical valve spindle C, and the outer sleeve B¹,
pivotted to or engaging with the crank pin P, of the shaft D, which also consti-
tutes the fulcrum of the valve motion, and which is operated by the regulating
hand lever E in adjusting the vertical position of the rod and the action of the
connected valve which is not shown.
It has hitherto been usual to employ one long sleeve, and to connect it to the
fulcrum pin by means of links which arrangement being unreliable in its action
we dispense with, the accomodating and self adjusting action of the two separate
sleeves B and 132 permits the use of a rigid fulcrum pin D, in such a position as
to be in proper relation with the joint F, on the valve spindle C, thus avoiding
the rapid wear which takes place at each end of a single sleeve, as well as the
detrimental side thrust put upon the valve spindle by the use of a single sleeve.
As a further protection to the valve spindle we may if desired pass it through
a tubular sleeve J, which slides with it through the guide K.
When it is desirable to work the hammer by hand so as to enable single blows
to be given, we use the arrangement shown in Figs. 3 and 4.
We alter the position of the valve spindle C, to one side or the other of the
sleeve B³, and extend it downwards as shown in Fig. 3, connecting the sleeve J,
pivotally with the inner sleeve B³, and placing upon the lower end of the extended
valve spindle a coiled spring S, its top end bearing against the joint F, or an
interposed washer or collar, and its bottom end against an adjustable regulating
nut H.
Underneath the extreme lower end of spindle C, we arrange the short end of a
lever G, working upon a pin Gs, as its fulcrum, thus when the valve motion is
working automatically the spindle C, moves clear of the end of the lever G. but
when the said lever is pressed down its short end is raised, and coming into con-

page_text: tact with the end of the spindle C, the valve to which the spindle is secured is
moved to the required position to give a distinct or dead blow.
On the withdrawal of the hand lever G, the reaction of the compressed spring S,
returns the valve spindle to its normal position and its automatic action com-
mences again.
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:-
1st. The improvements in the valve-motion of steam hammers, characterized by
two separate sliding sleeves B1 and B2, placed upon the free end of a lever bar A,
the other end of which is pivotally connected with the tup T; the sleeve B³, con-
nected with the valve rod C, and fulcrum sleeve B¹, working upon the crank of a
regulating lever E, as hereinbefore described, and as shown in Figs. 1 and 2 of
the drawings.
2nd. The improved valve motion for steam hammers as claimed in Claim 1,
characterized by two separately acting sleeves carried upon a lever bar pivotally
connected with the tup, the outer or fulcrum sleeve capable of being raised and
lowered, and the inner sleeve pivotally connected with the valve spindle, in
combination with a downward extension of the valve rod, an adjustable coiled
spring S, placed thereon, and a hand lever G, by which the valve rod C, can be
raised independently, as herein before described and shown in Figs. 3 and 4, of the
drawings.
Dated the 18th day of Januar 1000
ROBT. F. DRURY, C.P.A.,
Agent for Applicants.