IMPROVEMENTS IN STEAM HAMMERS, AND IN VALVES TO BE USED THERE- WITH
Year: 1859

page_text: LETTERS PATENT to James Eastwood, of the Railway Iron Works,
Litchurch, in the County of Derby, Engineer for the Invention of
"IMPROVEMENTS IN STEAM HAMMERS, AND IN VALVES TO BE USED THERE-
WITH."
Sealed the 22nd May 1860, and dated the 28th November 1859.
PROVISIONAL SPECIFICATION left by the said James Eastwood at the
Office of the Commissioners of Patents, with his Petition, on the
28th November 1859.
I, JAMES EASTWOOD, of the Railway Iron Works, Litchurch, in the County
of Derby, Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN STEAM HAMMERS, AND IN VALVES TO BE USED THEREWITH," to
be as follows:-
This Invention consists in constructing the standards of steam tilts or
hammers of wrought iron, so as to form guides for the hammer tup; also in
securing the bottoms of the standards into the anvil block or bed plate, and
securing the cylinder between them at the top.
This Invention also relates to a peculiar valve for steam hammers, this
valve being of a cylindrical form, with flanges at each end, so as to leave a
chamber for steam between the valve and the outside casing. The valve has
an opening in the circumference with sufficient metal on each side of the

page_text: opening to allow for lap, as in ordinary slide valves. This valve is also made
hollow and open to the exhaust pipe at one end, and is kept tight by metallic
packing rings let into grooves cut to receive them in the flanges on the end of
the valve, so that on the valve being turned the steam passes from the steam
chest into the cylinder, and on the valve being turned back again the steam
escapes through the centre of the valve to the exhaust pipe.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Eastwood in the Great Seal Patent Office on the
26th May 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
EASTWOOD, of the Railway Iron Works, Litchurch, in the County of Derby,
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Iler Letters
Patent, bearing date the Twenty-eighth day of November, in the year of our
Lord One thousand eight hundred and fifty-nine, in the twenty-third year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James Eastwood, Her special license that I, the said James East-
wood, my executors, administrators, and assigns, or such others as I, the said
James Eastwood, my executors, administrators, or assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
STEAM HAMMERS, AND IN VALVES TO BE USED THEREWITH," upon the condition
(amongst others) that I, the said James Eastwood, by an instrument in
writing under my hand and seal, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said James Eastwood, do hereby declare
the nature of my said 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 said Invention consists in constructing the standards of steam tilts or

page_text: hammers of wrought iron, to form guides for the hammer trip, and in securing
the bottoms of the standards into the anvil block, and securing the cylinder
between them at the top. This Invention further relates to a valve of a
cylindrical form, having flanges at each end, so as to leave a chamber for
steam between the valve and the outside casing, the valve having an opening
in the circumference with sufficient material on each side of the opening to
allow for "lap," as in ordinary slide valves, and is hollow and open to the
exhaust pipe at one end, the valve being kept tight by metallic packing rings
let into grooves cut to receive them in the flanges on the end of the valve, so
that on the valve being turned the steam passes from the steam chest into the
cylinder, and on the valve being reversed the steam escapes through the centre
of the valve to the exhaust pipe.
And in order that my said Invention may be fully understood, I shall now
proceed more particularly so describe the same, and for that purpose I shall
refer to the several Figures on the Sheet of Drawings hereunto annexed, the
same letters of reference indicating corresponding parts throughout all the
Figures.
Figure 1 of the Drawings represents a sectional elevation of a steam
hammer constructed according to my Invention; Figure 2 is an end view of
the same; Figure 3 is a horizontal section on an enlarged scale, taken
through the valve and cylinder; and Figure 4 is a section of the cylinder,
taken through the steam ports, and shewing the method of attachment to the
standards. A is the cylinder, made of wrought or cast iron, fitted with the
vacuum valve B, which is held in its proper position by the spiral spring C,
in the usual manner. The cylinder is firmly bolted to the standards D,
forged to the required shape, and having the guide pieces E formed on their
insides. These standards are turned at their ends F to fit holes previously
bored in the anvil block G, and are secured therein by the cotters H, or
the ends may be flattened out to form feet, and be keyed and dovetailed
into the anvil block. The anvil itself has a shank I cast on it, and is
fitted into a recess cast in the bed plate or block, as shewn by the dotted
lines in Figure 1, a hole being cast transversely in the block at J, to
admit the end of a bar for forcing the anvil out of its socket when the anvil
is to be changed. When the piston K, rod L, and trip M are formed of one
forging as shewn, the bottom cylinder cover N and glands O are put
together in halves vertically, and the joint secured by bolts. On steam being
admitted from the boiler into the pipe P, the hand lever Q which com-
municates with the stop valve R by means of the rod S and lever T is moved
so as to admit the steam down the port U into the steam chamber V sur-

page_text: rounding the valve, thence through the steam ports W into the cylinder. The
piston rod and trip being thus raised, the tripper slides X are brought into
contact with the rollers Y on the end of the lever Z, which may be adjusted to
give a blow of the required force in the manner described in the Specification
of my former Patent, No. 2659, dated October 17th, 1857, or by fixing both
the tripper slides on one side of the trip, and in that case using one lever only.
In Figure 3 the valve rod a works steam-tight through the gland b,
actuating the cylindrical valve c; V is the steam chamber round the outside of
the valve, the interior d forming the exhaust passage communicating with the
exhaust pipe e, the two chambers being kept steam-tight and apart by the
packing rings f.
In Figure 4 the cylinder A is secured to the standards D by the longitudinal
flanges and bolts g, and is recessed as shewn by the dotted lines at h to lighten
the cylinder, and, if necessary, to admit of projections left on the standard for
taking the strain off the bolts g.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or carried
into effect, I would observe, in conclusion, that what I consider to be novel
and original, and therefore claim as the Invention secured to me by the
herein-before in part recited Letters Patent, is,―
First, the general construction and arrangement of steam hammers and
valves to be used therewith, as herein-before described.
Second, the constructing of the standards of steam hammers or tilts of
wrought iron.
Third, the system or mode of fixing or securing the standards of steam
hammers or tilts to the anvil block, as herein-before described.
Fourth, the system or mode of securing the cylinder of steam hammers or
tilts between the standards, as herein-before described.
Fifth, the peculiar construction and arrangement of cylindrical valves for
steam hammers or tilts, as herein-before described.
"
In witness whereof, I, the said James Eastwood, have hereunto set my
hand and seal, this Nineteenth day of May One thousand eight hundred
JAMES EASTWOOD. (L.S.)