IMPROVEMENTS IN PRESSES APPLICABLE TO PACKING GOODS, AND TO OTHER PURPOSES IN WHICH COM- PRESSION IS REQUIRED
Year: 1876

page_text: LETTERS PATENT to James Cuthbert Scott, of Manchester, in the County
of Lancaster, Engineer, for the Invention of "IMPROVEMENTS IN PRESSES
APPLICABLE TO PACKING GOODS, AND TO OTHER PURPOSES IN WHICH COM-
PRESSION IS REQUIRED."
Sealed the 26th June 1877, and dated the 29th December 1876.
PROVISIONAL SPECIFICATION left by the said James Cuthbert Scott at tho
Office of the Commissioners of Patents on the 29th December 1876.
JAMES CUTHBERT SCOTT, of Manchester, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN PRESSES APPLICABLE TO PACKING GOODS, AND TO OTHER
PURPOSES IN WHICH COMPRESSION IS REQUIRED."
My Invention consists in a construction and arrangement of press in which a
screw or screws combined with levers are employed. To the head of the press, and
enclosed therein, I adapt a right and left handed screw having nuts thereon which
are connected respectively. to levers, the other ends of which are jointed to the
follower of the press; when therefore these screws are turned in one direction the
said levers are drawn towards each other and the follower is forced downward, and
when they are turned in the other direction the levers are separated and the follower
drawn upwards.
For arrangements in which the press acts by upward motion the above-mentioned
arrangement is placed beneath the said follower, or I combine the two, the one
screw (if desired) being slower than the other.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Cuthbert Scott in the Great Seal Patent Office on the
29th June 1877.
JAMES CUTHBERT SCOTT, of Manchester, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN PRESSES APPLICABLE TO PACKING GOODS, AND TO OTHER
PURPOSES IN WHICH COMPRESSION IS REQUIRED."
Fig 1 represents a side view of the press partly in section; Fig. 2, an end view
thereof, also partly in section; Fig. 3, a plan view of the bed plate; and Figs. 4
and 5, detached views, to be hereafter referred to,

page_text: At a is the top cross head of the press, and at 6 the bed plate; these two parts
being united by the tie rods c which act as guides for the moving part as in ordinary
presses. The bed plate b is provided with grooves d in which are mounted two
blocks e capable of sliding in the said grooves and provided with or formed as screw
nuts, within which is a right and left handed screw f, g, mounted in fixed bearings h
extending from the bed plate b, and upon the said screw is a pulley handle i. Each
of the screw blocks e has jointed to it a lever k, the upper ends thereof being con-
nected by joint pins 7 to the moveable part m of the press, which part at its sides is
suitably shaped for sliding upon the rods c. At n is the part of the press against
which the substance to be pressed is forced, and may be considered at present as
fixed and representing the ordinary top of the press when the action is performed
upwards. The goods or other substances to be pressed being placed on the moveable
part m the pulley handle i is turned, by which means the screw blocks e are caused
to approach each other through the medium of the right and left handed screw f. g.
By this movement the said levers will become straightened and the moveable
part m forced upwards, carrying with it the goods to be pressed against the
stationary part n, and thus the required pressure is effected.
In order to gain a greater pressure at the last the following contrivance may be
adopted (see Figs. 1, 3, 4). Upon the shaft of the screw f, g, is a ratchet wheel o,
taking into the teeth of which is a click p mounted upon a centre q which is carried
by a lever r, and the acting part of the said click is pressed downwards by a spring &
mounted upon a pin which is capable of sliding in the lever r; by turning therefore
the said lever backward and forward the screw f, g, is caused to act upon the
blocks e with a greater leverage upon the moveable part m, and greater pressure is
attained than that which is created through the pulley handle i, the latter however
being quicker in operation.
I have above referred to the part n as stationary, and it may be so, but for the
purpose in some cases of saving motion of the lower part m I make it capable of
sliding upon the rods c, and provide it with two screws t, upon which are worm
wheels u capable of being driven by worms as at v mounted on a shaft w which is
provided with a pulley handle a. The screws t are situate in nuts at y, and when
simultaneously turned by the above mentioned means they raise or depress the
part n and thus regulate the space between the two parts m, n, to suit different
thicknesses of goods to be pressed. The pulley handle is formed with a groove s
for the reception of a band by which it may be driven if required.
In the above described arrangement the part which immediately gives the
pressure is at the bottom of the press and therefore rises, but it may be at the
top thereof and act downward, the bottom part being stationary, or the two
methods may be combined so as to press in both directions.
Having thus described and ascertained the nature of my said Invention, and the
manner in which the same is to be performed, I desire it to be understood that I
claim as secured to me under the above in part recited Letters Patent, the use of a
press constructed and arranged substantially as described.
In witness whercof, 1, the said James Cuthbert Scott, have hereunto set my
hand and seal, this Twenty-eighth day of June, in the year of our Lord One
thousand eight hundred and seventy-seven.