Improvements in Steam-hammers and other Hammers Worked by the Pressure of Elastic Fluids.
Year: 1896

page_text: Date of Application, 25th Mar., 1896
Complete Specification Left, 28th Dec., 1896-Accepted, 13th Mar., 1897
PROVISIONAL SPECIFICATION.
Improvements in Steam-hammers and other Hammers Worked by
the Pressure of Elastic Fluids.
I, LEONARD FLETCHER MASSEY, of Openshaw, Manchester, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:
My invention relates to steam-hammers and other hammers worked by the
pressure of elastic fluids, and has for its object the provision of means simpler, more
convenient and more efficient than those hitherto provided for such purpose, to
enable such hammers to be used as stamps whenever it may be desirable to so use
them, at which times the tups of such hammers are required to remain away from
the anvils employed in conjunction with them until required to strike a blow or
make a stroke and then to strike such blow or make such stroke and afterwards.
return and remain away from the said anvils until the next blow or stroke is
required to be struck or made.
According to my invention I provide means by which when a steam-hammer or
other hammer worked by fluid pressure is required to operate as a stamp the
valve or valves employed to control the admission and release of steam or other
fluid to and from the cylinder of the said hammer may be readily and conveniently
operated in the manner requisite to cause the tup of the hammer to remain away
from the anvil employed in conjunction with it until such tup is required to strike
a blow or make a stroke and then to strike such blow or make such stroke and
afterwards return and remain away from the said anvil until the next blow or
stroke is required to be struck or made.
I provide in each steam-hammer or other hammer worked by fluid pressure in or
to which my invention is to be applied, a spring or springs or weight or weights.
or piston or pistons acted upon by the pressure of steam or other fluid or other
means which I arrange either so that it or they shall always be connected to or
capable of acting either directly or by means of any suitable intermediate parts
upon the valve-rod or any other suitable part connected to the valve or valves
employed to control the admission and release of steam or other motive fluid to
and from the cylinder of the steam-hammer or other hammer worked by fluid
pressure, or so that such spring or springs or weight or weights or piston or pistons
or other means may at times by the movement of an arm or lever or by any
other means be readily connected to or caused to act either directly or by means
of any suitable intermediate parts upon the valve-rod or any other suitable part
connected to the said valve or valves. The said spring or springs or weight or
weights or piston or pistons or other means is or are so arranged that when allowed
to move the valve or valves employed to control the admission and release of steam
or other fluid to and from the cylinder of the said hammer the said spring or springs
or weight or weights or piston or pistons or other means will move such valve or
valves in such direction that steam or other notive fluid will be admitted into the
cylinder of the hammer so as to move the tup of the hammer away from the anvil
employed in conjunction with it. When a piston or pistons is or are employed to
move the valve or valves employed to control the admission and release of steam
or other motive fluid to and from the cylinder of the hammer such piston or pistons
may be moved either by means of the motive fluid employed to move the tup of
the hammer or by means of any other suitable motive fluid.

page_text: I also provide in the said hammer an arm which is arranged to be moved as may
be requisite from time to time by means of a lever held in the various positions
requisite by any suitable means such as a quadrant and detent. I provide the said
arm with a stop or catch, and provide a stop or catch upon the valve-rod or other
part above mentioned as being connected to the valve or valves employed to control
the admission and release of steam or other motive fluid to and from the cylinder
of the said hammer. The stop or catch with which the arm above mentioned is
provided and the stop or catch with which the valve-rod or other part aforesaid
connected to the valve or valves above mentioned is provided are so arranged that
when it is desirable that the said steam-hammer or other hammer worked by the
pressure of fluids shall operate as a stamp, and the said arm is moved into proper
position, the stop or catch with which the said arm is provided will be brought into
the path of the stop or catch with which the valve-rod or other part. aforesaid
connected to the valve or valves above mentioned is provided, and so limit the
movement of the said valve or valves in one direction and thus prevent such valve
or valves from being moved so far in such direction as to cause the piston of the
hammer to too violently strike or injure the buffer or other stop provided in the
cylinder containing the said piston, in removing the tup of the said hammer from
the anvil used in conjunction with it. In order to enable the arm above mentioned
to be moved at any time with the object of bringing the stop or catch thereon into
the path of the stop or catch with which the valve-rod or other part connected to
the valve or valves above mentioned is provided, whatever may be the position
of the valve-rod or other part above mentioned as connected to the valve or valves
or the stop or catch upon such valve-rod or other part, at the time at which it may
be desirable to so move the said arm. I prefer to connect the stop or catch, with
which the arm above mentioned is provided, to the said arm by means of a hinge
or joint of any suitable kind so that such stop or catch may be moved in relation to
the said arm as may be desirable from time to time and provide a spring or other
means tending to move the said stop or catch into the path of the stop or catch
.with. which the valve-rod or other part connected to the valve or valves above
mentioned is provided.
In applying my invention to a steam-hammer or other hammer worked by fluid
pressure in which the valve or valves employed to control the admission and release
of steam or other motive fluid to and from the cylinder of the hammer is or are
moved by means of a lever which is connected to such valve or valves and is
connected to or arranged to be moved by means of a spring in the direction for
causing the tup of the hammer to be moved away from the anvil employed in
conjunction with it and a part or bowl of or upon the top of the hammer is arranged
to act upon the said lever so as to cause the said valve or valves to be so moved
that the said tup shall be moved towards the anvil employed in conjunction with it
and a hand-lever connected to or acting in any suitable manner upou the said valve
or valves, enables such valve or valves to be moved by hand at any time in order
that the tup of the hammer may be made to move towards the anvil used in
conjunction with it and in which the lever connected to the said valve or valves is
supported by an arm arranged to be moved into and secured in different positions
in order that the position of the axis about which the said lever is made to oscillate
may be changed from time to time as may be desirable in order that the variations
requisite from time to time may be made in the length of the stroke made by
the tup of the said hammer when the said valve or valves is or are moved by
means of the tup of the hammer and the spring employed in conjunction with the
said lever; the stop or catch above described as being employed according to my
invention and 'mounted upon an arm may be connected to or mounted upon the
arm which in a hammer of the said kind supports the lever upon which the tup
of such hammer acts and the spring employed in such hammer may when the said
hammer is being employed as a stamp serve to operate the valve or valves employed
in order to move and keep the tup away from the anvil after each blow or stroke
has been struck or made.

page_text: In the application of my invention to or in a steam-hammer or other hammer
worked by fluid pressure in which the movement of the tup is arranged to move
the valve or valves employed to control the admission and release of steam or other
fluid from the cylinder of the hammer by means other than those above mentioned
or in the application of my invention to or in a steam-hammer or other hammer
worked by fluid pressure in which the movement of the valve or valves employed
is accomplished wholly by hand, the arm provided with a stop or catch, the spring
or springs or weight or weights or piston or pistons or other means employed to
move the valve or valves in one direction and the stop or catch provided upon the
valve-rod or other part which are employed according to my invention may be
arranged in any suitable positions, and the said spring or springs or weight or
weights er piston or pistons or other means employed to move the said valve or
valves in one direction may be arranged to be brought into action by the means
by which the arm provided with a stop is brought into action.
In cases in which it may at any time be necessary or desirable that the valve or
valves controlling the admission and escape of steam or other motive fluid to and
from the cylinder of a steam-hammer or other hammer worked by fluid pressure in
or to which my invention is to be applied, shall be moved by hand or otherwise,
without being at all subject to the influence of or acted upon by a spring or springs
or weight or weights or piston or pistons or other means such as I employ according
to my invention in order to move the valve or valves in the direction for causing
the tup of such hammer to be moved and kept away from the anvil employed
therewith as is necessary in the use of such hammer as a stamp I arrange the
said spring or springs or weight or weights or piston or pistons or other meins so
that it or they nay as occasion may require he readily disconnected from or
prevented from acting upon the said valve or valves.
Although I have only referred to one cylinder as being employed in each steam-
bammer or other hammer worked by fluid pressure to or in which my invention
may be applied, I would have it understood that my invention is applicable to
hammers each provided with two or more cylinders. In one mode of applying my
invention to a hammer provided with two or more cylinders I may provide one set
of parts such as I have above described as being employed according to my
invention and arrange that such set of parts shall control the action of the valve
or valves employed to control the admission and release of steam or other motive
fluid to and from each of the cylinders of such hammer. In another mode of
applying my invention to a hammer provided with two or more cylinders I may
provide in conjunction with the valve or valves controlling the admission and
release of steam or other motive fluid to and from each of the cylinders of such
hammer a separate set of parts such as are above described as being employed
according to my invention.
Dated this Twenty-fourth day of March 1896.
HOWARD
CHEETHAM,
Manchester, Agent to the Applicant.
Improvements in Steam-hammers and other Hammers Worked by
the Pressure of Elastic Fluids.
I, LEONARD FLETCHER MASSEY. of Openshaw, Manchester, in the County of
Lancaster, 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:-
My invention relates to steam hammers and other hammers worked by the

page_text: pressure of elastic fluids and has for its object the provision of means simpler.
more convenient and more efficient than those hitherto provided for such purpose,
to enable such hammers to be used as stamps whenever it may be desirable to so
use them, at which times the tups of such hammers are required to remain away.
from the anvils employed in conjunction with them until required to strike a blow.
or make a stroke and then to strike such blow or make such stroke and afterwards
return and remain away from the said anvils until the next blow or stroke is
required to be struck or made.
According to my invention, I provide means by which when a steam-hammer or
other hammer worked by fluid-pressure is required to operate as a stamp the valve
or valves employed to control the admission and release of steam or other fluid to
and from the cylinder of the said hammer may be readily and conveniently operated
in the manner requisite to cause the tup of the hammer to remain away from the
anvil employed in conjunction with it until such tup is required to strike a blow or
make a stroke and then to strike such blow or make such stroke and afterwards
return and remain away from the said anvil until the next blow or stroke is
required to be struck or made.
provide in each steam-hammer or other hammer worked by fluid-pressure in or
to which my invention is to be applied, a spring or springs or weight or weights or
piston or pistons acted upon by the pressure of steam or other fluid, or other means
which arrange, either so that it or they shall always be connected to or capable
of acting either directly or by means of any suitable intermediate parts upon the
valve-rod or any other suitable part connected to the valve or valves employed to
control the admission and release of steam or other motive fluid to and from the
cylinder of the steam-hammer or other hammer worked by fluid pressure, or so
that such spring or springs or weight or weights or piston or pistons or other means
may at times by the movement of an arm or lever or by any other means be readily
connected to or caused to act either directly or by means of any suitable intermediate
parts upon the valve-rod or any other suitable part connected to the said valve or
valves. The said spring or springs or weight or weights or piston or pistons or other
means is or are so arranged that when allowed to move the valve or valves
employed to control the admission and release of steam or other fluid to and from
the cylinder of the said hammer, the said spring or springs or weight or weights or
piston or pistons or other means will move such valve or valves in such direction
that steam or other motive-fluid will be admitted into the cylinder of the hammer
so as to move the tup of the hammer away from the auvil employed in conjunction
with it. When a piston or pistons is or are employed to move the valve or valves
employed to control the admission and release of steam or other motive fluid to and
from the cylinder of the hammer such piston or pistons may be moved either by
means of the motive fluid employed to move the tup of the hammer or by means of
any other suitable motive fluid.
also provide in the said hammer an arm which is arranged to be moved as may
he requisite from time to time by means of a lever held in the various positions
requisite by any suitable means such as a quadrant and detent. I provide the said
arm with a stop or catch, and provide a stop or catch upon the valve-rod or other
part above mentioned as being connected to the valve or valves employed to
control the admission and release of steam or other motive fluid to and from the
cylinder of the said hammer. The stop or catch with which the arm above
mentioned is provided and the stop or catch with which the valve-rod or other part
aforesaid connected to the valve or valves above mentioned is provided are so
arranged that when it is desirable that the said steam-haminer or other hammer
worked by the pressure of fluids shall operate as a stamp, and the said arm is
moved into proper position, the stop or catch with which the said arm is provided
will be brought into the path of the stop or catch with which the valve-rod or
.other part aforesaid connected to the valve or valves above mentioned is provided,
and so limit the movement of the said valve.or valves in one direction and thus
prevent such valve or valves from being moved so far in such direction as to cause

page_text: the piston of the hammer to too violently strike or injure the buffer or other stop
provided in the cylinder containing the said piston, in removing the tup of the said
hammer from the anvil used in conjunction with it. In order to enable the arm
above mentioned to be moved at any time with the object of bringing the stop or
catch thereon into the path of the stop or catch with which the valve-rod or other
part connected to the valve or valves above mentioned is provided, whatever may
be the position of the valve-rod or other part above mentioned as connected to the
valve or valves or the stop or catch upon such valve-rod or other part, at the time
at which it may be desirable to so move the said arm, I prefer to connect the stop
or catch, with which the arm above mentioned is provided, to the said arm by
means of a hinge or joint of any suitable kind so that such stop or catch may be
moved in relation to the said arm as may be desirable from time to time, and
provide a spring or other means tending to move the said stop or catch into the
path of the stop or catch with which the valve-rod or other part connected to the
valve or valves above mentioned is provided.
In applying my invention to a steam-hammer or other hammer worked by fluid
pressure in which the valve or valves employed to control the admission and
release of steam or other motive fluid to and from the cylinder of the hammer is or
are moved by means of a lever which is connected to such valve or valves and is
connected to or arranged to be moved by means of a spring in the direction for
causing the tup of the hammer to be moved away from the anvil employed in
conjunction with it, and a part or bowl of or upon the tup of the hammer is arranged
to act upon the said lever so as to cause the said valve or valves to be so moved
that the said tup shall be moved towards the anvil employed in conjunction with
it and a hand-lever connected to or acting in any suitable manner upon the said
valve or valves enables such valve or valves to be moved by haud at any time in
order that the tup of the hammer may be made to move towards the anvil used in
conjunction with it, and in which the lever connected to the said valve or valves in
supported by an arm arranged to be moved into and secured in different positions in
order that the position of the axis about which the said. lever is made to oscillate
may be changed from time to time as may be desirable in order that the variations
requisite from time to time may be made in the length of the stroke made by the
tup of the said hammer when the said valve or valves is or are moved by means of
the tup of the hammer and the spring employed in conjunction with the said lever;
the stop or catch above described as being employed according to my invention
and mounted upon an arm may be connected to or mounted upon the arm which in
a hammer of the said kind supports the lever upon which the tup of such hammer
acts and the spring employed in such hammer may when the said hammer is being
employed as a stamp serve to operate the valve or valves employed in order to
move and keep the tup away from the anvil after each blow or stroke has been
struck or made.
In the accompanying drawing, in all the figures of which the same letters of
reference are employed to iudicate corresponding parts, my invention is illustrated
as applied to a steam-hammer or other hammer to be worked by the pressure of
elastic fluid, in which the valve employed to control the admission and release of
steam or other motive fluid to and from the cylinder of the hammer is moved by
means of a lever connected to such valve and connected to or arranged to be moved
by means of a spring in the direction for causing the tup of the hammer to be
moved away from the anvil employed in conjunction with it and a bowl upon the
tup of the hammer is arranged to act upon the said lever so as to cause the said
valve to be so moved that the said tup shall be moved towards the anvil and a
hand-lever connected to the said valve enables such valve to be moved by hand at
any time in order that the tup of the hammer may be made to move towards the
anvil and in which the lever connected to the said valve is supported by an arm
arranged to be moved into and secured in different positions in order that the
position of the axis about which the said lever is made to oscillate may be changed
from time to time in order that the variations requisite from time to time may be

page_text: 'made in the length of the stroke of the top of the hammer when the said valve is
inoved by means of the top of the hammer and the spring employed in conjunction
with the said lever.
In the said drawing,
Figs. 1 and 3 are side elevations, partly in vertical section showing such portion
of the said steam-hainmer or other hammer to be worked by the pressure of elastic
fluid as is requisite for the illustration of my invention and the application thereof
to such hammer.
Figs. 2 and 4 are rear elevations of the said portion of the steam-hammer
corresponding respectively to Figs. 1 and 3, but with the omission of the buffer or
stop shown in Figs. 1 and 3. In Figs. 1 and 2 the parts provided in order to enable
the valve to he operated and the parts provided and employed according to my
invention are illustrated as arranged for the hammer to be operated as a hammer
in the ordinary manner, and in Figs. 3 and 4 the said parts are illustrated as
arranged for the hammer to be operated as a stamp.
Fig. 5 is a side elevation and Fig. 6 a rear elevation drawn upon a larger scale
than Figs. 1, 2, 3, and 4 and showing certain parts in the relative positions in which
they are represented in Figs. 3 and 4, but more clearly than they cau be shown in
Figs. 3 and 4.
The construction and arrangement of the standards (a) (a), tup (b), piston (c),
cylinder (d), valve (e), valve-chamber (), and adjustable buffer or stop (g) of the
hammer are clearly illustrated in the accompanying drawing and therefore besides
pointing out that the steam or other elastic fluid to operate the hammer is supplied
in any suitable manner to the valve-chamber () through the opening (h) formed
therein, I shall not further describe such parts, except in so far as may be requisite
for the description of the parts employed in accordance with my invention.
In the accompanying drawing, (i) is the bowl or roller mounted upon the tup (6)
of the hammer and () is the lever, which being moved by means of the said bowl or
roller (i) and a spring (k) connected at one end to such lever (j) and at the other end
to a ring or collar surrounding a shaft or axle (2) mounted in the standards (a) (a!)
of the hammer, is employed to impart motion to the valve (e) at such times as
such valve (e) is not moved by the attendant in charge of the hammer. By means
of the hand-lever (m) mounted upon the said shaft or axle (1) and connected,
by means of the valve-rod (n), to the valve-spindle (o) connected to the
valve (e), the attendant in charge of the hammer is enabled to move the
valve (e) when it may be requisite for such valve (e) to be moved by hand.
In a part of the valve-rod (n) is formed a slot (n) through which passes a pin or
stud () secured in and projecting from the lever (j) and serving to connect such
lever () to the valve-rod (n.) The stud (12) upon which the lever () is capable
of being oscillated is mounted in a lever (p) secured upon a shaft (p') which is
capable of being oscillated in bearings formed in the standard (a) of the hammer,
and is provided with a hand-lever (p2) by which it may be oscillated and a detent
upon auch hand-lever (p2) is arranged to act in conjunction with suitable
notches (A) (B) (C) formed in a segment (9) secured to the said standard (a) so
as to enable the hand-lever (p2) to be secured in different positions as may be
necessary from time to time. In Figs. 1 aud 3 the standards (a) (a) of the hammer
and the hand-lever (p2) and segment (9) are indicated by dotted lines, being
supposed to be removed in order that the parts between such standards (a) (a) may
be clearly represented and indicated by full lines and the spring (k) is omitted
from Figs. 2 and 4 in order that confusion may be avoided. By the hand-
lever (p2) being moved so that the detent provided thereon is placed in the
notch (A) or the notch (B) or one or other of the notches between the notch (A)
and the notch (B) the position of the lever (j) may be changed in order that the
length of the strokes of the tup (b) brought about by the movement of the valve (e)
under the influence of the bowl or roller (i) and spring (k) may be regulated. As
is obvious from the accompanying drawing, when the valve (e) is being moved by
ineans of the bowl () and spring (k) the action of the bowl or roller (i) upon the

page_text: lever () during the raising of the tup (6) of the hammer causes the valve (e) to be
raised and bring about the descent of the tap (6) and in the descent of the tup (6)
the spring (k) being permitted to move the lever (j) in the direction opposite to
that in which it was moved by the bowl or roller (i) moves the valve (e) downwards.
and brings about the raising of such tup, and the handle (m) by means of which the
attendant in charge of the hammer may move the valve (e) may be moved at any
time in the direction for raising the valve (e) and bringing about the descent of the
tup (b).
Besides serving in the manner above described to move the lever (j) in the
direction opposite to that in which it is moved. by the bowl or roller (i) the
spring (k) serves as the means which I employ according to my invention to move
the valve (e) in the direction for moving the tup (b) of the hammer away from the
anvil employed in conjunction with it.
Besides serving to support the lever () and hold it in different positions the
lever (p) serves to carry the stop or catch (r) which according to my invention is
provided upon an arm arranged to be moved as may be requisite from time to time
by means of a lever held in the various positions requisite by any suitable means
such as a quadrant and detent. The stop or catch (r) is formed with jaws embracing
the arm (p) and connected thereto by means of a pin or stud (1) and upon the
arm (p) is formed a projection in which is mounted a detent (2) provided with a
spring (3) tending to force it out of such hole which detent (2) being caused by
the spring (r 3) to bear against a flat surface formed on one of the jaws of the stop
or catch (r) tends to hold such stop or catch (r) in the position relative to the
arm (p) in which it is indicated in Figs. 3, 4, 5 and 6. () is the stop or catch
which according to my invention I provide upon the rod or other part connected to
the valve employed to control the admission and release of steam or other motive
fluid to and from the cylinder of the hammer. The stop or catch (s) consists of a
screw secured by means of a lock-nut in position in a projection formed on a part.
of the valve-rod (n). The stop or catch (r) and the stop or catch (s) are so
arranged that by the arm (p) being moved into a suitable position, the stop or
catch (r) may be brought into the path of the stop or catch (s) and so limit the
downward movement of the valve (e) and thus prevent such valve (e) from being
moved so far downward as to cause the piston (c) of the hammer to too violently
strike or injure the buffer or other stop (g) provided in the cylinder (d) in removing
the tup (b) of the hammer from the anvil used in conjunction with it. The arm (p)
may be moved at any time without regard to the position of the stop or catch (s)
at that time, in order to bring the stop or catch (r) into the path of the stop or
catch (s) as the stop or catch (r) being connected to the arm (p) by means of the
pin or stud (1) so as to be able to be turned to some extent in relation to such
arm (p) and being pressed upon by the detent (2), will move into the path of the
stop or catch (s) as soon as the stop or catch (s) moves out of its way, if it be not
able to pass into the path of such stop or catch (s) as soon as the said arm (p) is.
moved into the said position. The notch (C) in the segment (9) is formed in such
position that when the detent upon the lever (p2) is placed in such notch (C) and.
the stop or catch (r) is in the position relative to the arm (p) in which it is indicated
in Figs. 3, 4, 5 and 6, the said stop or catch (r) will be in the path of the stop or
catch (s). In Figs. 1, and 2 the stop or catch (r) is shown withdrawn out of the
path of the stop or catch (s), so that subject to the manner in which the movement
of the valve (e) is limited by the bowl or roller (i) and lever (j) the hand-lever (m).
may be so moved as to move the valve (e) in either direction throughout any
portion of the stroke permitted to it by the length of the valve-chamber (f) and the.
form of the valve-spindle (o) and the bowl and roller (i) and spring (e) are able to
move the said valve (e) to any extent corresponding to the position in which the
lever (p2) may be placed, and thus when the said stop or catch (r) is withdrawn
from the path of the stop or catch (s) the hammer may be worked as an ordinary
combined automatic and hand operated hammer. When the hand-lever (p2) is.
moved so as to bring the stop or catch (r) into the position in which it is illustrated.

page_text: in Figs. 3, 4, 5 and 6, that is, in the path of the stop or catch (s), the lever () is,
by the said hand-lever (p) being so moved, so placed that the bowl or roller () is
no longer able to move it in the direction for causing the valve (e) to be raised and
bringing about the descent of the tup and when the hand-lever (m) is moved to
bring about the descent of the tup (6) and released, the tup (b) will make a single
downward stroke and the releasing of the hand-lever (m) will allow the spring (k)
to move the valve (e) downwards to the extent permitted by the stops or
catches (r) (s) and permit the passage into the lower part of the cylinder (d) of so
much motive fluid as will suffice to raise the tup () from the anvil employed in
conjunction with it, without causing it to too violently strike or injure the buffer or
stop () and such tup (b) will be kept in the raised position until the hand-lever (m)
is again moved to bring ahout the descent of the tup (b) and thus when the stop or
catch (r) is in the position in which it is indicated in Figs. 3, 4, 5, and 6 and in the
path of the stop or catch (s) the hammer works as a stamp.
The preceding description of the hammer illustrated in the accompanying
drawing, indicates that all that is necessary in order to effect the change in the
mode of working of the hammer so that it may act at one time in the ordinary way
as a hammer and at another time as a stamp is the placing of the lever (p2) in the
position corresponding to the manner in which the hammer is required to work that
is to say
in the position in which it is indicated in Figs. 1 and 2 or the position in
which it is indicated in Figs. 3 and 4 as the case may be and thus it is obvious that
such change is very readily effected.
In the application of my invention to or in a steam-hammer or other hammer
worked by fluid pressure in which the movement of the tup is arranged to move the
valve or valves employed to control the admission and release of steam or other
fluid from the cylinder of the hammer by means other than those above mentioned
or in the application of my invention to or in a steam-hammer or other haminer
worked by fluid pressure in which the movement of the valve or valves employed is
accomplished wholly by hand, the arm provided with a stop or catch, the spring or
springs or weight or weights or piston or pistous or other means employed to move
the valve or valves in one direction and the stop or catch provided upon the valve-
rod or other part, which are employed according to my invention may be arranged
in any suitable positions, and the said spring or springs or weight or weights or
piston or pistons or other means employed to move the said valve or valves in one
direction may be arranged to be brought into action by the means by which the arm
provided with a stop is brought into action.
In cases in which it may at any time be necessary or desirable that the valve or
valves controlling the admission and escape of steam or other motive fluid to and
from the cylinder of a steam-hammer or other hammer worked by fluid-pressure in
or to which my invention is to be applied, shall be moved by band or otherwise,
without being at all subject to the influence of or acted upon by a spring or springs
or weight or weights or piston or pistons or other means such as I employ according
to my invention in order to move the valve or valves in the direction for causing
the up of such hammer to be moved and kept away from the anvil employed
therewith as is necessary in the use of such hammer as a stamp, I arrange the said
spring or springs or weight or weights or piston or pistons or other means so that it
or they may as occasion may require be readily disconnected from or prevented
from acting upon the said valve or valves.
Although have only referred to one cylinder as being employed in each steam-
hammer or other hammer worked by fluid pressure to or in which my invention may
be applied, I would have it understood that my invention is applicable to hammers
each provided with two or more cylinders. In one mode of applying my invention
to a hammer provided with two or more cylinders I may provide one set of parts
such as I have above described as being employed according to my invention and
arrange that such set of parts shall control the action of the valve or valves
employed to control the admission and release of steam or other motive fluid to and
from each of the cylinders of such hammer. In another mode of applying my

page_text: invention to a hammer provided with two or more cylinders I may provide in
conjunction with the valve or valves controlling the admission and release of steam
or other motive fluid to and from each of the cylinders of such hammer a separate
set of parts such as are above described as being employed according to my
invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
In a steam-hammer or other hammer worked by the pressure of elastic fluid, the
combination with the valve-rod or other suitable part connected to the valve or
valves employed to control the admission and release of steam or other motive
fluid to and from the cylinder of the hammer, of a spring or springs or weight or
weights or piston or pistons acted upon by the pressure of steam or other fluid or
other means tending to move the said valve or valves so as to cause the tup of the
hammer to be moved away from the anvil employed in conjunction with it, an arm
arranged to be moved as may be requisite from time to time by means of a lever
held in the various positions requisite by any suitable means such as a quadrant and
detent, a stop or catch upon the said arm, and a stop or catch upon the valve-rod or
other suitable part connected to the said valve or valves to act in conjunction with
the stop or catch upon the said arm so as to limit at such times as the stop or catch
upon the said arm is brought into the path of the stop or catch upon the valve-rod
or other suitable part connected to the said valve or valves, tbe movement of the
valve or valves aforesaid in the direction for causing the tup of the hammer to be
moved away from the anvil employed in conjunction with it, all arranged,
employed and operating substantially in the inanner herein before described
and for the purpose of enabling the said hammer to be readily caused to operate
as a stamp.
Dated this Twenty-fourth day of December 1896.
HOWARD
CHEETHAM,
Manchester, Agent to the Applicant.