Year: 1887

page_text: Date of Application, 31st Dec.,
ST
Specification Accepted, 17th Feb., 1888
performed, to be particularly
described and ascertained in and by the following statement :-
Our improvements relate to moulding or embossing machines, for embossing plastic
material.
In the accompanying drawing
Figure 1 is a plain view, and
Figure 2 is a side elevation of a machine embodying our improvements.
A represents the frame of the machine, B the embossing roll fixed upon a shaft D.
C is the bed roll, made in separate cylindrical sections d, e, and f, arranged upon a
shaft E, the middle section e having a diameter greater than the others, so as to extend
between the two circular knives g, g, which are mounted on the shaft D, and against
the ends of the embossing section b. The knives are larger in diameter, than the
section b, and extend from it, and lap on and bear closely against the ends of section e
of the roll C. The section e, of the bed roll, is composed of thin sections e, Figure 3
divided through their diameters, for greater convenience in taking off and putting on.
The shaft E has its journals sustained by movable boxes i, i provided with adjusting
screws, k, adapted to adjust the bed roll to the embossing roll, as the thickness of
the work to be produced may require.
Directly over the bite of the bed roll and embossing roll, are two rolls s and rover
which is a hopper H. These rolls are for the purpose of drawing the plastic material
from the hopper and partially preparing it to be acted on by the embossing roll.
In ordinary work, these top rolls and the hopper may be dispensed with, and the
plastic, material fed between the bed roll and the embossing roll by hand. Below the
embossing roll B is an endless apron I arranged on two rolls and k. To the
shafts of the rolls E and D and s, and k there is applied a train of gear, and an
intermediate gear q, connects the gear o and r. These rolls are given motion by a
crank k on the shaft D.
In rear of the bed roll C, is mounted a beam L for carrying a roll of paper P.

page_text: When the machine is in operation, a strip of paper from the beam L. leads to the
section e of the bed roll, thence down between the bed and embossing rolls, to and
upon the endless apron I. The strip of paper acts as a backing to the embossed
plastic material to prevent its being stretched out of shape, whon coming from
the embossing roll. The strip of paper is afterwards removed from the embossed
plastic material.
The construction of the embossing section of the roll B, is as follows; a complete
section of the desired pattern or design is engraved in a block of hard wood; from
which is taken several casts in some kind of elastic plastic material. These casts, or
a sufficient number of them, are placed within a circular drum or ring, in such a
manner that the section of the pattern shall exactly match and form a complete figure
or strip of ornamentation around the inside of the drum or cylinder.
A skin of copper is then deposited, by well known means, on the ornamentation. A
suitable sized core is then placed within the cylinder, taking care to have it central
therewith, and melted metal or other suitable substance poured into the spaces between
the ornamentation or skin of copper, and the core. This gives a strong backing to
the skin of copper.
When cool, the whole is removed from the cylinder, and trued
up, when it is ready to be used as an embossing roll.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
First. The combination of the embossing roll and its fellow or bed roll; with
circular knives applied to the ends of the embossing roll and projecting beyond its
periphery, and lapping on the ends of the adjacent bed roll; such rolls having
mechanism for simultaneously revolving them, as set forth.
Second. The combination of the paper delivering beam or roll, with the embossing
roll and bed roll, and with circular knives applied to the ends of the embossing roll
and projecting beyond its periphery and lapping on the ends of the adjacent bed roll
such bed roll and embossing roll having mechanism for simultaneously revolving
them as specified.
Third. The combination of the hopper and feed rolls, the embossing roll and its
bed roll, with circular knives applied to the ends of the embossing roll, and projecting
beyond its periphery and lapping on the ends of the adjacent bed roll, as arranged
and set forth.
Fourth. The combination of the paper delivering beam or roll, the embossing roll
and bed roll, the circular knives applied to the ends of the embossing roll and
extending therefrom and lapping on the ends of the adjacent bed roll, and the endless
apron, such apron being arranged below the embossing roll and with it and the bed
roll provided with mechanism for revolving them, substantially as described.
Fifth. An embossing roll, when constructed by first engraving a complete section
of the desired pattern or design in wood or other suitable material, taking castings
therefrom, arranging them on the inside of a cylinder or drum in such a manner as
to form a continuous ornamentation around the inside of said cylinder; depositing a
skin of copper or other suitable metal on said ornamentation and giving it a backing
of metal or other suitable substance, for the purpose as described.
Dated this 31st day of December 1887.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicants.