IMPROVEMENTS IN MACHINERY FOR FORGING METALS, APPLICABLE ALSO TO OTHER STAMPING PURPOSES
Year: 1874

page_text: LETTERS PATENT to George Lamb Scott, of Manchester, in the County
of Lancaster, Engineer, for the Invention of "IMPROVEMENTS IN
MACHINERY FOR FORGING METALS, APPLICABLE ALSO TO OTHER STAMPING
PURPOSES."
Sealed the 23rd October 1874, and dated the 25th April 1874.
PROVISIONAL SPECIFICATION left by the said George Lamb Scott
at the Office of the Commissioners of Patents, with his Petition,
on the 25th April 1874.
I, GEORGE LAMB SCOTT, of Manchester, in the County of Lancaster,
Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN MACHINERY FOR FORGING METALS, APPLICABLE ALSO TO OTHER
STAMPING PURPOSES," to be as follows :-
My Invention consists in apparatus for giving motion to a hammer,
which is alternately drawn upward and allowed to fall through an elastic
medium, for which purpose I connect the motive power to the hammer.
through the medium of springs.

page_text: The arrangement I propose is as follows:-The hammer extends from
a rod which moves in suitable guides, and upon it is a sliding piece
provided with projecting studs around which there pass india-rubber
bands, which are also connected to other studs projecting from the
hammer rod. The above mentioned sliding piece carries also a second
pair of india-rubber bands, which are connected to studs projecting from
the hammer rod, and it is therefore between two elastic forces. The
motive power is connected by an ordinary crank or excentric to the
sliding piece, which being thus caused to move upward and downward
effects successive blows but through an elastic medium.
Instead of the india-rubber above mentioned spiral or other metallic
springs may be employed.
The apparatus may be used for forging or stamping metals, crushing
ores, or other similar purposes, and two or more hammers may be
combined in one frame.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Lamb Scott in the Great Seal Patent Office
on the 24th October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
LAMB SCOTT, of Manchester, in the County of Lancaster, Engincer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fifth day of April, One thousand
eight hundred and seventy-four, in the thirty-seventh year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, tho
said George Lamb Scott, Her special license, that I, the said George
Lamb Scott, my executors, administrators, and assigns, or such others as
I, the said George Lamb Scott, my executors, administrators, and 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 MACHINERY FOR FORGING METALS,
APPLICABLE ALSO TO OTHER STAMPING PURPOSES," upon the condition, amongst

page_text: scout & improvements in sluchinery for Forging metais, 90.
others, that I, the said George Lamb Scott, by an instrument in writing
under my hand and scal, 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 George Lamb Scott, 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 and accompanying Drawings, that is to
say:-
My Invention relates to apparatus for giving motion to a hammer,
which is alternately drawn upward and allowed to fall through an clastic
medium, for which purpose I connect motive power to the hammer by
means of springs.
In the accompanying Drawing, Fig. 1 represents the apparatus in
front view, and Fig. 2 in side view. The frame which carries the
operating parts is at 1 bolted by means of clamps 2, 3, to a fixed
pillar 4, or it might be to a wall or other fixture sufficiently firm. From
the frame 1 there extends a bracket 5 carrying a pedestal 6, provided
with a bearing in which is mounted a shaft 7, on which are the fast and
loose pullies 8, 9. The other end of the shaft 7 is provided with a
disc 10, on which there is a crank pin 11 connected to a forked rod 12,
the lower end of which is situate on pins 13 extending from a boss 14.
constituting a cross head. The boss 14 is bored out, so as to be capable
of sliding upon a rod 15, which is itself capable of sliding upward and
downward in guides 16, 17, projecting from the frame 1. Upon the
pins 13 are rollers 18, 19, on which are placed rings of india-rubber 20, 21,
which are also situate on other rollers 22, 23, mounted on pins extending
from a cross bar 24, which is fixed by means of nuts 25, 26, upon the
sliding rod 15, and by means of these nuts the tension of the india-
rubber rings 20, 21, may be regulated. The boss 14 carries a second set
of pins 27 projecting at right angles to those shewn at 13, and upon.
them are rollers 28, 29, carrying rings of india-rubber 30, 31, which pass
upward and are there situate upon rollers 32, 33, mounted on pins
extending from a bar 34, which is fixed to the sliding rod 15 by means
of nuts 35, 36, and by which the tension of the rings 30, 31, may be,

page_text: .
regulated. At the bottom of the rod 15 is fixed the hammer 37 of any
required form, and at 38 is the anvil. Upon the bed plate 39 is mounted
a treadle 40 to which is jointed a rod 41, its other end being connected
to a weighted lever 42 turning on a fixed centre 43, and provided with a
fork 44 which embraces the driving strap, and the machine may
therefore be put to work or stopped simply by the action of the treadle 40.
By the above description it will be seen that the two sets of springs 20,
21, 30, 31, are capable of acting in opposite directions upon the hammer
rod 15, and when therefore the crank revolves a certain amount of motion.
may be imparted to the hammer beyond that which is due to the said
crank, while a cushion is formed which prevents a rebound and causes a
dead blow, and as the hammer is not driven positively it admits of
different thicknesses being placed on the anvil without risk of breakage.
Figs. 3 and 4 represent in views taken at right angles to each other, a
modification of my Invention, similar numbers of reference to those
above referred to being marked on similar parts. In this instance the
cross head 14 carries a bar 13 which is capable of sliding upon
bolts 45, 46, and between the said bar and the heads 47, 48, of the said
bolts are spiral springs 49, 50, the bolts 45, 46, being attached at their
lower ends to a cross bar 51 fixed by nuts to the hammer rod 15. The
cross head 14 also carries another bar 27, which slides upon a second pair of
bolts 52, 53, the upper ends of which are attached to a bar 54 fixed to
the hammer rod 15, and between the heads 55, 56, of the said bolts and
the bar 27 are spiral springs 57, 58, the whole forming an arrangement
substantially the same as that shewn at Fig. 1 and 2, and acting after
the manner already described.
In reference to Fig. 3, 4, blocks or tubes of india-rubber might take
the place of the spiral springs or might be combined therewith.
The above description has had reference particularly to forging, but
my Invention is also applicable to what is more commonly called a
stamping, for which purpose the rod 15 may carry a die of any required
form and the anvil a counter die, or the Invention may be applied to
stamp ores or other such matters in order to crush them.
Having thus described and ascertained the nature of my said
Invention, and the manner in which it is to be performed, I desire it to 3
be understood that I do not claim generally the use of a hammer worked
through the medium of elastic parts, but I claim as secured to me under

page_text: the above in part recited Letters Patent, and for the purposes above set
forth, the general arrangement of machine above described and
particularly the sliding piece 14 situate between two elastic appliances.
In witness whereof, I, the said George Lamb Scott, have hereunto
set my hand and seal, this Twenty-third day of October, in the
year of our Lord One thousand eight hundred and seventy-four.