An Improved Combined Valve and Hand Motion Arrangement Applicable to Steam Hammers:
Year: 1888

page_text: Date of Application, 5th Oct., 1888
Complete Specification Loft, 2nd July 1889-Accented' 14th Sept. 1889
PROVISIONAL SPECIFICATION.
An Improved Combined Valve and Hand Motion Arrangement
Applicable to Steam Hammers:
I ALFRED TAYLOR of Alma Street Works Sheffield in the County of York Engineer
do hereby declare the nature of this invention to be as follows:-
My Invention relates to providing and using an improved and more simple combined
arrangement of valve and hand motion for steam hammers, the combination consisting
of the fewest parts and arranged in the simplest manner, and so constructed as to
regulate the supply of steam to the top and bottom of the piston of a steam hammer as
required to the greatest nicety, coinbined with the self-acting motion thereof, and
also so as to instantly work by hand by using one lever only, and vice versú.
In carrying out the objects of my present invention I use a piston of the usual type
of construction and a cylinder having two valve chambers cast in one piece, with
suitable ports. Connected with No. I, or the main valve chamber I have and use a
loose valve with four heads of the piston type, steam being admitted from the boiler
at the centre of the two middle piston heads, these communicate with the cylinder
ports admitting or releasing steam at the top and bottom, the exhaust passing between
the outer heads at each end into the exhaust pipe.
I apply to and work this loose valve with a piston valve fitted in No. 2, valve
chamber with two heads, one head at each end, steam being admitted in at the centre
of the heads from a central opening in No. 1, valve chamber, or from the boiler.
The piston valve of No. 2 chamber is connected to the tup of the hammer by a
lever and it works the hammer self-acting by alternately admitting steam through the
ports at the top and bottom of No. 2 chamber to the top and bottom of the loose valve
of No. 1 chamber driving it up and down, thus opening and shutting the steam ports
at the top and bottom of the cylinder.
fitted a
At the end of the projecting spindle of the loose valve of No. 1 chamber
projecting collar, this comes in contact with an eccentric cam projecting from the side
of the hammer and is set and worked by a lever which regulates the travel of the
loose valve of No. 1 chamber as required, to the greatest nicety, and directly under
the projecting spindle of this loose valve is a stop regulated by a screw and by moving
the lever up or down the hand motion is given and vice versa, and the apparatus
instantly resumes self-acting on placing the lever in the proper position therefor.
In connection with my present invention I apply and use the valve gear for steam
hammers which was described and claimed in the Specification, and was illustrated
in the drawing, of certain Letters Patent granted to me on the 28th day of May 1885
No. 6480, for "Improvements in valve motion applicable to steam hammer;" that is,
I combine the same with the hand motion valve hereinbefore described and so arrange
the same as to work the loose valve No. 1, so giving it a selfacting motion and
working the same automatically from the tup of the hammer on which is bolted a stud
and on this works a lever the fulcrum of which is an eccentric stud bolted: through
the standard of the hauimer, and at a suitable distance from the fulcrum of the valve
spindle is connected by a slot joint, the lever passes through this slot, which lever is
suitably fitted with a circular projection to suit the radial motion of the lever, the
same having hardened steel faces to reduce friction. The eccentric stud is fitted with
a fast lever which is used to raise and lower the valve to give either a long or short
stroke to the self acting motion or it may be used to work the hammer by hand also.
Existing steam haminers fitted with loose valves I can alter to the principle of this
invention by the same method and means as hereinbefore described.
Dated this 4th day of October 1888.

page_text: COMPLETE SPECIFICATION.
An Improved Combined Valve and Hand Motion Arrangement
Applicable to Steam Hammers.
I ALFRED TAYLOR of Alma Street Works Sheffield in the County of York 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 in writing and on reference to the accompanying sheet of drawings, that is
to say :-
My Invention relates to providing and using an improved and more simple combined
arrangement of valve and hand motion for steam hammers, the combination consisting
of the fewest parts arranged in the simplest manner, and being so constructed as to
regulate to the greatest nicety the supply of steam to the top and bottom of the piston of a
steam hammer as required, combined with the self-acting motion thereof, and also so
arranged as to instantly work by hand with the use of one lever only and vice versa.
In carrying into effect the objects of my present invention I use a piston of the
usual type of construction and a cylinder having two valve chambers cast in one piece
and made with suitable ports. Connected with No. 1, or the main valve chamber I
provide and use a loose valve with four heads of the piston type, steam being admitted
from the boiler at the centre of the two middle piston heads, these communicate with
the cylinder ports admitting or releasing steam at the top and bottom, the exhaust
passing between the outer heads at each end into the exbaust pipe. I apply to and
work this loose valve with a piston valve fitted in No. 2 valve chamber with two heads
one head at each end, steam being admitted in at the centre of the heads from a
central opening in No. 1 valve chamber or from the boiler. The piston valve of No. 2
chamber is connected to the tup of the hammer by a lever and it works the hammer
self acting by alternately admitting steam through the ports at the top and bottom of
No. 2 chamber to the top and bottom of the loose valve of No. 1 chamber, driving it
up and down thus opening and shutting the steam ports at the top and bottom of the
cylinder.
At the end of the projecting spindle of the loose valve of No. 1. chamber is fitted a
projecting collar which comes in contact with an eccentric cam projecting from the
side of the hammer and it is set and worked by a lever which regulates to the greatest
nicety the travel of the loose valve of No. 1 chamber as required; and directly under
the projecting spindle of this loose valve is a stop regulated by a screw and by moving
the lever up or down the hand motion is given and vice versa; and the apparatus
instantly resumes self acting on placing the lever in the proper position therefor.
In order that my said invention and the manner of carrying it into practical effect
may be more fully understood, on the accompanying sheet of drawings it is illustrated
as applied to a steam hammer of the single standard type of construction, the drawing
being marked with figures and letters of reference corresponding with those in the
following description thereof, the same letters of reference and numerals indicating
like parts-in the several Figures.
Figure 1, is a side view or elevation partly in section of my improved apparatus.
Figure 4, is a plan of the same.
Figure 2, is a back view or end elevation of the apparatus in section.
Figure 3, is a view or elevation partly in section of the other side of the apparatus,
combined with the self-acting motion arrangement of my Patent No. 6480 of 1885.
And Figure 5, is a plan of the same.
In Figures 1, and 3, c, is the cylinder, p, the piston, t, the tup, 1, the valve,
and the steam inlet. 3, s, are the steam ports to the top and bottom of the
cylinder. b, is the eccentric cam, q, the lever, f, the projecting collar, and r, the
guide and stop screw.
In Figure 2, the valve and motion No. 1,-being the hand worked valve,-is
marked 1, and the valve No. 2,-marked 2, is the self-acting valve which works
the loose valve 1, when working self-acting, sufficient travel of the valve being given
as required between the stop r, and the eccentric cam b..

page_text: In Figure 3, which represents the other side of the apparatus, is shown the valve 2,
the exhaust chamber h, and the self acting motion arrangement of my Patent No. 6480
of 1885.
It should be understood that my present invention principally consists in being
able by regulating the valve 1, by the eccentric cam b, to allow only steam to act
upon either the top or bottom of the piston as required, or for the hammer to be used
or operated by hand only and vice versa, being instantly self acting. The regulating
valve 1, can be driven up and down either by the self-acting valve 2, driven from
the tup t, of the hammer or automatically from openings o, o, (shown in dotted lines
in Figure 1) in the cylinder c, after the piston p, has passed a given point or by
hand with the eccentric cam b, and lever 7; as by reason of the pressure of steam
being greater on the top side of the valve 1, than on the lower side owing to the
difference in the diameter of the valve spindle as shown at a, y, Figure 1, the
projecting collar f, is kept up to the eccentric cam b, thus giving perfect control
over the steam by the action of the lever 7, and with perfect ease.
In connection with my present invention I apply, and use the valve gear for steam
hammers which was described and claimed in the Specification and was illustrated
in the drawing of my Patent dated the 28th of May 1885 No. 6480 for "Improve-
ments in valve motion applicable to steam hammers," that is, I combine the same
with the hand motion valve hereinbefore described and so arrange the same (as
shown at Fignre 3, and partly at Figure 2, on the drawing accompanying my
present Specification) as to work the loose valve 1, thus giving it a self-acting
motion, and working the same automatically from the tup t, which carries the swivel
joint 9, (see Figure 3,) connected with the lever 7; the stud 4, (Fig. 3) is bolted
on the hammer, as shown at 5, in Figure 2, and on this works a lever 7, the
fulcrum of which is the eccentric stud 4; and at a suitable distance from the
fulcrum of the valve spindle 21, the lever 7, is connected by a slot joint 6 with
the fast lever 3; the lever 7, passes through the slot, this lever is suitably fitted
with a circular projection 8, to suit the radial motion of the lever the said
lever having hardened steel faces to reduce the friction. The eccentric stud 4,
is fitted with a fast lever 3, which is used to raise and lower the valve 1, to give
either a long or short stroke to the selfacting motion, or it can be used to work the
hammer by hand also.
The working of the steam hammer with my improved apparatus combined is as
follows:-
All the valves being arranged or set central the tup of the hammer falls, thus opening
the full steam port of the valve 2, at the top, forcing the valve 1, down and so
admitting steam under the piston, thus the self acting commences, and by reversing
the lever q, the eccentric cam b, raises or lowers the valve 1, admitting steam to the
upper or lower side of the piston, at pleasure or when required, thus hand working the
hammer, and by again placing the lever 7, in position the self acting is instantly
resumed.
When so required I can alter existing steam haminers fitted with loose valves to the
principle of my present invention by the same method and means as hereinbefore
described and illustrated.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is:
1. The novel application and arrangement of the eccentric cam b, and its combina-
tion with and as an effective hand motion and stamp motion whereby a full port of
steam is instantly put on and instantly cut off, and self acting can be instantly resumed
at pleasure, substantially as hereinbefore described and as illustrated at Figure 1, on
the accompanying sheet of drawings.
2. The combination of selfactingly or automatically working the loose valve 1, as
shown in dotted lines at o, o, in Figure 1, of the drawings, and the upward pressure of

page_text: the said valve by the steam acting on the valve spindle at x, owing to the difference in
the diameter of the spindle at-y, substantially as illustrated in Figure 1, of the drawings
and as hereinbefore described.
3. The working of a selfacting steam hammer and disconnecting the same instantly
by the use of one lever only at any part of the stroke and working the hammer by
hand giving a light a heavy or a dead blow, or any number of odd blows, as desired,
and instantly resuming selfacting when required; substantially as herein before described
and as illustrated at Figures 2, and 3, of the drawings.
Dated this 28th day of June 1889
BRISTOW HUNT,
Aldine Chambers, High Street, Sheffield, Agent for the Applicant.