Improvements in Power-hammers.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Power-hammers.
I, HAROLD 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 consists in improvements in power-hammers in which the tups
or hammer-heads are by means of springs connected to blocks receiving a recipro-
cating motion and the principal object of my invention is the provision of arrange-
ments which shall be compact and convenient in construction and use and efficient
in permitting the requisite movements of the tups or hammer-heads in relation
to the blocks to which they are connected, while avoiding unnecessary friction or
knocking together of the parts and consequent heating and wear of such parts.
According to my invention, I provide in conjunction with the block receiving
a reciprocating motion and the tup or hammer-head employed in a power-hammer,
a spring or two springs or two sets of springs which may be laminated or of any
other suitable form and connect the ends of the said spring or the end of each of
the two springs or the end of each of the springs in each of the two sets of springs
to the tup or hammer-head or the block aforesaid by means of a link or links of metal
leather or other suitable material; and so arrange the said spring or springs
and the link or links employed that the link or links connected to one end of the
said spring or one of the said two springs or each of the springs in one of the said
two sets of springs that it shall cross or extend past the link or links connected.
to the other end of the said spring or the other of the said two springs or the
springs in the other of the said two sets of springs. The said spring or the said
two springs or the said two sets of springs is or are preferably so arranged that
the links connected thereto shall be placed within a cavity or cavities in the tup
or hammer-head or block to which they are connected.
•
Dated this Fourteenth day of October 1897.
HOWARD CHEETHAM,
Manchester, Agent to the Applicant.
Improvements in Power-hammers.
I, HAROLD 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 consists in improvements in power-hammers in which the tups

page_text: or hammer-heads are by means of springs connected to blocks receiving a recipro-
cating motion and the principal object of my invention is the provision of arrange-
ments which shall be compact and convenient in construction and use and efficient
in permitting the requisite movements of the tups or hammer-heads in relation
to the blocks to which they are connected, while avoiding unnecessary friction or
knocking together of the parts and consequent heating and wear of such parts.
According to my invention, I provide in conjunction with the block receiving
a reciprocating motion, and the tup or hammer-head employed in a power-hammer,
a spring or two springs or two sets of springs which may be laminated or of any
other suitable form and connect the ends of the said spring or one end of each of
the two springs or one end of each of the springs in each of the two sets of springs
to the 'tup or hammer-head or the block aforesaid by means of a link or links of metal,
leather or other suitable material; and so arrange the said spring or springs
and the link or links employed that the link or links connected to one end of the
said spring or one of the said two springs or each of the springs in one of the said
two sets of springs shall cross or extend past the link or links connected
to the other end of the said spring or the other of the said two springs or the
springs in the other of the said two sets of springs. The said spring or the said
two springs or the said two sets of springs is or are preferably so arranged that
the links connected thereto shall be placed within a cavity or cavities in the tup
or hammer-head or block to which they are connected.
In the accompanying drawings in all the figures of which the same letters of
reference are employed to indicate corresponding parts, Fig. 1 is in part a vertical
section and in part a front elevation of so much of a power-hammer as is requisite
for the illustration of one form of my invention, Fig. 2 is partly a horizontal
section taken on the plane indicated by the line A A of Fig. 1 and partly sections
taken on the planes indicated by the lines B B and C C of Fig. 1 so as to better
show the links employed according to my invention, Fig. 3 is a front elevation and
Fig. 4 a side elevation illustrating one of the two springs employed in conjunction
with the tup or hammer-head of the said hammer as removed from such hammer,
Fig. 5 is a side elevation and Fig. 6 is a plan illustrating one of the links employed
according to my invention in the said hammer, Fig. 7 is a plan
of the axle used with the said link and Fig. 8 18 a plan and
Fig. 9 a side elevation of the other of the said links. Fig. 10
is a vertical section corresponding in part to Fig. 1 and illustrating the manner
of employing springs different from those illustrated in Figs. 1, 3 and 4, Fig. 11
is a front elevation and Fig. 12 a side elevation showing one of the springs
employed in the arrangement illustrated by Fig. 10 as removed from the hammer
in which it is employed, Fig. 13 is a side elevation of the block illustrated in
Fig. 1, and the connecting rod used therewith.
In the power-hammer of which part is illustrated in Fig. 1 a crank-pin (a) which
may be adjusted by means of a screw (b) in position in a disc (c) mounted upon
one end of a shaft caused to revolve by any suitable means is embraced by one end
of a connecting rod (). Upon the connecting rod (d) is mounted a block (e)
which is capable of being slidden upon the rod (d) and may be adjusted in vertical
position thereon by means of a pinion (3) which is formed upon an axle (4) fur-
nished with a handle (5) and capable of being revolved in the block (e) and is made
to engage with a rack (d) formed upon the rod (d). When adjusted into the
required position upon the rod (d) the block (c) is secured in such position by
means of a wedge-shaped pin (2) which is formed with teeth to engage with the
teeth of the rack (d) and is placed in a slot of corresponding form in the block (e)
and is secured in position therein by means of a set-screw (f) screwed into the
block (). Laminated springs (g) are inserted into cavities formed in the block (e)
and are secured therein by means of plugs (6), one of which is provided for each
of the springs (g) and is screwed into the block (e) and provided with a rounded
end to engage with a corresponding hollow formed in one of the plates of the
spring (9) with which such plug (6) is employed, and by the stress to which such

page_text: springs (9) are subjected while in use causing them to bear against rounded
shoulders (e) formed on the central part (e²) of the block (e). Each of the
springs (9) is provided with a notch (g) dividing its end into two parts in each
of which is a notch (g²). (h) (h) are the links employed in conjunction with the
springs (g). The link (h) which is employed in conjunction with one spring (9) and
is shown detached in Figs. 5 and 6 is provided with two projections (¹) with
rounded faces to engage with and fit and be capable. of being oscillated in the
notches (g) of the said spring (g) and with a shank (2) adapted to be passed into
the notch (g) in such spring (g) and the notch (y) in the other spring (g). The
said link () is provided with a boss formed with a hole through which passes an
axle (3) capable of being oscillated in holes formed in the sides of the tup or
hammer-head (2) which is formed with a hole to receive the said boss and a pin (h)
is passed through the boss and axle (3) in order to secure the said link (h) and
axle () together and in position in the tup or hammer-head (2). The link (h)
which is employed in conjunction with the other spring (g) and is shown detached
in Figs. 8 and 9 is formed in two parts (h) (6) formed with bosses (47) (48)
respectively. One of the parts of the link (h) shown in Figs. 8 and 9 that is to
say the part (5) is provided with a part (h) projecting into and secured by means
of a pin (10) in a hole in the part (4) after both the bosses (h) (48) of such
parts (h) (h) have been placed in a hole formed in the tup or hammer-head (i)
to act as a bearing for the link (h). Each of the parts (h5) (h) of the link (h) is
provided with a projection (1) rounded so as to engage with and fit and be capable
of being oscillated in the notches (g) of the spring (9) with which such link (/) is
employed. When the links (h) are placed in position and in engagement with the
springs (g) with which they are respectively employed one link (h) passes through
the space between the arms of the other link (h) and between one of the springs (g)
and the part of the tup or hammer-head (i) which is adjacent to the parts of the
bosses (7) (8) of the parts (h³) (46) of the said other link (h) so that each link (h)
crosses or extends past the other.
The arrangement illustrated in Figs. 10, 11, and 12 only differs from that
illustrated in Figs. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 13 in that instead of laminated
springs (g) solid springs (g) are employed and in that instead of such springs (g)
bearing against rounded shoulders (e¹) on the transverse part (e²) of the block (e),
shoulders (g) are formed on such springs (g) and placed in engagement with
hollows formed in the transverse part of the block (e).
It is obvious from the accompanying drawings that the tup or hammer-head (2)
is formed with a cavity in which the links (h) are placed and operated.
When the power-hammer arranged in either of the modes illustrated in the
accompanying drawings is in use the links (h) while permitting the tup or hammer-
head (2) to move upwards and downwards in the manner requisite in relation to
the springs (9) as such springs (g) are caused to yield and again resume their
normal condition, preserve a constant connection between such springs (9) and the
tup or hammer-head (2) and thus enable all unnecessary friction and knocking
together of the parts and consequent heating and wear and tear of such parts to
be avoided.
The manner in which my invention may be applied to a power-hammer in which
a single transverse spring is employed and the manner in which my invention
may be applied to a power-hammer in which two or more sets of springs are
employed will be obvious without further description to persons conversant with
power-hammers.
It is obvious that in conjunction with each spring employed in a power-hammer
to which my invention is employed there may be employed two or more links
arranged and operating in the manner similar to that in which the links illus-
trated in the accompanying drawings act and that although the links illustrated
in the accompanying drawings are formed of metal, links formed of leather or
any other suitable material may be employed as may be suitable for the size and
weight of the tups or hammer-heads in conjunction with which they are employed.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is;-
In a power-hammer the combination with the tup or hammer-head and a block
receiving a reciprocating motion and connected to a spring or springs or two sets
of springs, of two or more .links to connect the ends of the said spring or the one
end of each of the two springs or the one end of each of the springs in each of the
two sets of springs to the tup or hammer-head and so arranged that the link or
links connected to one end of the spring or one of the two springs or each of the
springs in one of the two sets of springs shall cross or extend past the link or
links connected to the other end of the said spring or the other of the said two
springs or the springs in the other of the said two sets of springs and all arranged,
employed and operating for the purposes and substantially in the manner herein-
before described.
Dated this Fourteenth day of July 1898
HOWARD
CHEETHAM,
Manchester, Agent to the Applicant.