IMPROVEMENTS IN STEAM HAMMERS
Year: 1859

page_text: LETTERS PATENT to Thomas Fearnley, of Bradford, in the County of
York, Engineer, for the Invention of "IMPROVEMENTS IN STEAM HAMMERS."
Sealed the 26th June 1860, and dated the 29th December 1859.
PROVISIONAL SPECIFICATION left by the said Thomas Fearnley at the
Office of the Commissioners of Patents, with his Petition, on the 29th
December 1859.
I, THOMAS FEARNLEY, of Bradford, in the County of York, Engineer, do
5 hereby declare the nature of the said Invention for "IMPROVEMENTS IN
STEAM HAMMERS," to be as follows:-
The object of the improvements is the adaptation of means by which the
length of stroke of the tup or hammer block in either direction may be
governed and self-acting, and they relate to the application of series of cam
or such like controlling surfaces, each adapted to act upon a truck or bowl,
upon lever arms, or such like means, in connection with the steam valve.
These lever arms, or such like means, are capable of being shifted and set' to
act on either of the respective cam or such like surfaces, the one to operate for
the up and the other for the down' stroke, and thus stop the motion of the
block in either direction at the desired distances for the amount' of stroke
required. The steam valves may also be operated by hand independently, if
desired.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Fearnley in the Great Seal Patent Office on the
28th June 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
FEARNLEY, of Bradford, in the County of York, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of December, 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 Thomas Fearnley, Her special licence that I, the said Thomas Fearnley,
my executors, administrators, and assigns, or such others as I, the said
Thomas Fearnley, my executors, administrators, and assigns, should at any
time agreo 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," upon the condition (amongst others) that I, the said
Thomas Fearnley, my executors, or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, 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 Thomas Fearnley, do hereby declaré
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement thereof, that is to say :-
The object of the improvements is the adaptation of means by which the
length of stroke of the tup or hammer block in either direction may be
governed and self-acting, and they relate to the application of series of cam or
such like controlling surfaces, each adapted to act upon a truck or bowl, upon
lever arms, or such like means, in connection with the steam valve. These
lever arms, or such like means, are capable of being shifted and set to act on
either of the respective cam or such like surfaces, the one to operate for the
up and the other for the down stroke, and thus stop the motion of the block
in either direction at the desired distances for the amount of stroke required.
The steam valves may also be operated by hand independently, if desired.

page_text: describe the Drawing annexed.
';
DESCRIPTION OF THE DRAWING.
Figure 1 shows a front view, Figure 2 an edge view, and Figure 3 a plan view,
of a steam hammer with my improvements applied to it. The parts of the steam
hammer generally are of an ordinary character, but to the tup or hammer
block a are applied on each side a series of cam or such like surfaces b, b', b², b,
and c, c', c², c; each of the surfaces 6 is adapted to act on a truck or bowl e, car-
ried by a lever arın e¹, whilst each of the cam or such like surfaces c is adapted
to act on a truck or bowl f carried by the lever arm f', and the lever arms e, f,
are formed with square, or they may be other suitable openings through theni
adapted to slide on, and when moved to give motion to the common axis 9,
upon which is affixed the arm h, which by a connecting rod h¹ is connected to
the lever arm upon the axis of a valve i', for admitting or cutting off the
supply of steam. The arm his extended to form a handle h³, by which the
valve is operated by the attendant when required to be worked by hand.
The cam or such like surfaces b, 61, 62, 6, are for acting on the lever e¹ to cut
off the supply of steam in the ascent of the hammer. The cam or such like
surfaces c, c, c, c, are for acting on the lever f to cut off the steam at the
times desired in the descent of the tup or hammer block. The lever e¹ is
formed with a neck or collar e, which is embraced by the forked end of a
lever j, which turns upon an axis, and at its other end is formed into a
handle by which the lever e', with the roller e is brought opposite the
required inclined or cam surface b, 61, 68, or b³, to cut off the supply of steam at
the times desired. The lever arm f is formed with a like neck or ring, and
is embraced by a similar forked end of a lever k, acting in like manner to
the lever j. is the ordinary lever to admit or cut off the supply of steam by
a valve. The lever m is for the purpose of working a stopper or cock m',
situated in the top steam port for shutting off the steam wholly or partially
from the top side of piston, so as to regulate the intensity and speed of the
blow.
Having thus described the nature of my said improvements, I would have
it understood that I do not claim the separate parts of the steam hammer, nor
do I confine myself to the precise details of the parts as explained, con-
stituting my improvements, as these may be varied without departing from the
peculiar character of my Invention; but what I do claim is, the application of

page_text: cam or other such like surfaces, and parts acting therewith, to regulate the
extent of stroke of the top or hammer block in either direction, substantially
as explained.
In witness whereof, I, the said Thomas Fearnley, have hereunto set
my hand and seal; this Twenty-fifth day of June, in the year of our
Lord One thousand eight hundred and sixty.
Witness,
ISAAC SWAINE,
Vulcan Ironworks.
Bradford, York".
THOMAS FEARNLEY. (L.S.)