Improvements in Steam Stamps.
Year: 1890

page_text: Date of Application, 24th Feb., 1890
Complete Specification Left, 24th Nov., 1890-Accepted, 3rd Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Steam Stamps.
We, EDWARD SAMUEL BRETT, of 12 Saint Nicholas Street, Coventry, Engineer,
and JAMES HAZLEWOOD, of 5 Hertford Terrace, Coventry, Manufacturer, in the
County of Warwick, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the construction and arrangement of steam drop stamps,
and consists of the improvements hereinafter described, connected with the raising
mechanism or motor of the hammer.
We employ a block, pillar guides, and hammer &c., similar to those at present in
use. To the hammer is attached a flexible band preferably of metal.
At the upper part of the pillars we provide the raising mechanism which is carried
At the one side a steam
upon two strong columns or other suitable structure.
cylinder is provided, having a part rotating piston rod shaft concentric thereto.
Upon this piston rod shaft is formed a (pale) piston to which is imparted a part
rotative movement, that is, somewhat less than a complete revolution. A suitable
steam chest and valve, (preferably of the circular type), is arranged in connection
with the cylinder, and also rods, and levers &c., by which the said valve can be
manipulated by the workman, without inconvenience.
Further, the piston rod shaft is extended on across the opposite side, and there
carried in a suitable rigid bearing. Or, in some cases, if desired, we may provide a
similar cylinder upon both sides of the structure.
Upon the piston rod shaft, about the centre of the machine, we provide a loose
pulley, of a suitable width to carry the aforesaid lifting band. Upon each side of
this loose pulley, a lever is firmly secured to the shaft which extends to a little beyond
the rim of the said pulley, terminating with a cross pin &c., connecting their two
ends together, and upon and to which is connected the upper end of the aforesaid
band.
In some cases,
if desirable, this pulley, and the levers, may be of one construction,
firmly attached to the shaft; or, in other cases, we may employ two loose pulleys,
and one central lifting lever between them.
Thus, upon opening the steam valve the piston is carried around the cylinder a
given distance, or any part of such given distance, according to the will of the
operator. In doing so, the piston rod shaft is correspondingly rotated, and thereby
also the lever or levers, and thus the band together with the hammer is lifted. Upon
reaching the desired height, the steam valve is opened to the exhaust, when the
hammer suddenly descends.
By these means, the hammer is raised quickly, and is under the perfect and con-
venient control of the operator, by hand or foot, generally the latter.
Dated this 22nd day of February 1890.
CHARLES T. POWELL,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in Steam Stamps.
We EDWARD SAMUEL BRETT, of 12 Saint Nicholas Street, Coventry, Engineer,
and JAMES HAZLEWOOD, of 5 Hertford Terrace, Coventry, Manufacturer, in the
County of Warwick, do bereby 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 :-
-
This invention relates to the construction and arrangement of steam drop stamps,

page_text: and consists of the improvements hereinafter described, connected with the raising
mechanism or the motor of the hammer.
In order to more fully and clearly describe this our invention, we have appended
hereunto illustrative sheets of drawings, upon which are figures and letters of
reference, similar letters referring throughout the several views to the same thing or
part, and in which :-
Fig. 1 shows a front view of this our invention.
Fig. 2 is a side view of the arrangement.
Fig. 3 shows a modified arrangement, wherein the steam cylinder &c., are placed
upon the ground, as being more handy for some purposes than that of Figs. 1
and 2.
Fig. 4 is an enlarged part sectional elevation of the cylinder and valve &c.
Fig. 5 is an enlarged detailed front elevation of the cylinder, piston shaft &c.
Fig. 6 is a side and front elevation of the loose chain or band pulley.
Fig. 7 is a detached enlarged elevation and plan of the lifting arms or levers.
Fig. 8 is an enlarged detached front and side view of the lever concussion check
arrangement.
We employ a block a, pillar guides, b, b, and hammer, c, &c. similar to those at
present in use. To the hammer, c, is attached a flexible band, d, preferably of
metal, and generally of chain.
At the upper part of the pillars, b, b, we provide the raising mechanism which is
carried upon two strong columns, e, e or other suitable structure. At the one side
a steam cylinder, f. is provided, having a part rotating piston rod shaft, g, concentric
thereto. Upon this piston rod shaft, g, is formed a plate piston, , see Fig. 4, to
which is imparted a part rotative movement, that is through somewhat loss than a
complete revolution. A suitable steam chest, i, and valve, j, (preferably of the
circular type) is arranged in connection with the cylinder, f, and also rods, k, and
levers,, or their equivalents, by which the said valve can be manipulated by the
workman without inconvenience.
Further. The piston rod shaft, g, is extended on across the opposite side, see
Figs. 1 & 5, and there carried in a suitable rigid bearing, m. Or, in some cases, if
desired, we may provide a similar, f, cylinder upon both sides of the structure.
Upon the piston rod shaft, about the centre of the machine we provide a loose
pulley, n,
of a suitable width and section to carry the aforesaid lifting chain. Upon
each side of this loose pulley, n, a lifting lever o, o, see Figs. 1, 2, 5, 7 & 8, is firmly
secured to the shaft, g, which extends to a little beyond the rim of the said pulley, n,
terminating with a cross pin, p, &c. which connects their two ends together, and
upon and to which is connected the upper end of the aforesaid band, d.
In some cases, we may employ two loose pulleys, with double lifting chains, and
one central lifting lever between them.
Thus, upon opening the steam valve, as seen in Fig. 4, steam is admitted through
the port, q, and the piston, h, is carried around the cylinder a given distance, or any
part of such given distance, according to the will of the operator.
In doing so, the piston rod shaft, g, is correspondingly rotated, and thereby, also
the lever or levers, o, o, and thus the band, d, together with the hammer, c, is
lifted..
Upon reaching the desired height the steam valve is opened (lowered) to the
exhaust, when the hammer, c, suddenly descends.
In order to prevent the piston in its return (falling) motion, from striking the
interior blocked off part, r, of the cylinder, we provide, upon the guides, b, b, or
other suitable fixture, a bracket or support, s, having thereon wooden or other
suitable cushion blocks, t, and further provide that instead of the chain, d, being
carried direct from the ends of the levers, o, o, it shall be carried from the pins, u, u,
upon which are placed the springs, v, v, & w, w.
Thus upon the sudden arrival of the piston at its falling stroke end, concussion is
checked by the springs, v, v, when the head of the pins, u, u, strike the blocks, t, while,

page_text: when the steam is suddenly admitted to the cylinder, such sudden strain is first taken
by the springs, w, w.
A' is an air outlet or inlet by which a vacuum is prevented either in the front or
rear of the piston during its forward or return stroke.
Again, we provide that the length of the chain shall be made adjustable in order to
accommodate the position of the piston. This is effected as seen in Fig. 1; in which
the links, x, x, are connected to the hammer C, and to these links is attached the
plate, y, through which works the adjusting screw, z, to which is attached the chain, d.
Its operation is readily understood.
It will further be obvious that the position of the steam cylinder may be changed
according to convenience, as for instance shewn in Fig. 3, in which case the cylinder
is shewn upon, (or it may be below) the ground line, the lifting chain being carried
over the top pulley, and down again to the lifting levers upon the piston shaft, their
motion, in this case being in the direction shewn by the arrow.
This our invention is applicable to various purposes such as the forging, stamping,
raising etc. of metals, and the driving of piles or other similar objects.
Having now particularly described and ascertained the nature of this our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1st. The combination with a drop stamp c, and guides, b, b, of a cylinder having
a part rotating piston, h, shaft, g, and levers, o, o, constructed and operating
substantially as shown and described and for the purposes specified.
2nd. The combination in a drop stamp, of the lifting levers, o, o, with the hammer c,
chain, d, shaft, g, and piston, 1, substantially as described and shown and for the
purposes specified.
3rd. The combination in a drop stamp of the levers, o, with the loose pulley, n,
substantially as described and for the purposes specified.
4th. The combination in a drop stamp with the lifting levers, o, o, of the concussion
check pins, u, u, having springs, v, v, & w, w, substantially as described and for the
purposes specified.
5th. The general combination and arrangement of any of the several parts herein
described and illustrated constituting these our improvements in mechanism for
operating drop stamps all substantially as set forth.
Dated this 22nd day of November 1890.
-CHARLES T. POWELL,
.12, Cherry Street, Birmingham, Applicants' Agent.