IMPROVEMENTS IN RUBBER-FACED METAL TYPE AND IN THE MANUFACTURE THEREOF, AND APPARATUS TO BE PROVISIONAL SPECIFICATION
Year: 1881

page_text: LETTERS PATENT to George Kissam Cooke, of the Firm of G. K. Cooke,
Hurles, and Co., India Rubber Stamp Manufacturers, of 170, Fleet Street, in
the City of London, for an Invention of "IMPROVEMENTS IN RUBBER-FACED
METAL TYPE AND IN THE MANUFACTURE THEREOF, AND APPARATUS TO BE
PROVISIONAL SPECIFICATION left by the said George Kissam Cooke at
the Office of the Commissioners of Patents on the 22nd July 1881.
GEORGE KISSAM COOKE, of the Firm of G. K. Cooke, Hurles, and Co., India
Rubber Stamp Manufacturers, of 170, Fleet Street, in the City of London.
"IMPROVEMENTS IN RUBBER FACED METAL TYPE AND IN THE MANUFACTURE
THEREOF, AND APPARATUS TO BE USED IN SUCH MANUFACTURE."
This Invention relates to improved rubber faced metal type, and to certain
improvements in the manufacture thereof, and in apparatus to be used in such
manufacture, the object being to provide a metal bodied rubber faced type which
shall afford greater support to and rigidity of the rubber facing, and more accurate
registering of the rubber face to the corresponding metal body, and thereby
greater advantage for use than in types of the kind as at present made; and
further, to provide for the manufacture of the type and also for apparatus for the
purpose.
In carrying out the Invention, metal types cast in the ordinary way are
used as the foundations or metal bodies, and are set up in a "chase" in required
number and sort. This chase is provided toward the sides with pins, grooves,
holes, ears, or slides, and a second "chase " or flank is also provided with
corresponding holes, ears, pins, grooves, or slides, so that when the two are fitted
together they shall both be in correct register the one to the other.
Having placed the second chase or flask upon the chase containing the metal
type to be rubber faced, a mould is taken (in plaster of Paris or other material) in
the ordinary manner known to stereotypers. When this has been effected the

page_text: flask containing the mould is removed from the type, and a thin sheet of rubber
compound is placed upon the face of the types in the chase. The top flask
containing the mould will then be replaced, occupying the same position relative to
the types by means of the registering fittings, as described, as previously when the
mould was made. The two are then clamped together, and the rubber is cured or
vulcanised in the usual manner, and the vulcanised rubber stereotype adheres to
the metal types, and the individual types are afterwards separated, when it will be
found that the film or face of rubber will exactly conform in correct register to
and be supported by the metal type configuration.
If required, the faces of the type may be roughened, or solutions may be applied
after the mould has been taken to facilitate or ensure greater adherence of the
rubber to the metal type during the subsequent vulcanizing.

page_text: "
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Kissam Cooke in the Great Seal Patent Office on the
21st January 1882.
GEORGE KISSAM COOKE, of the Firm of G. K. Cooke, Hurles, and Co., India
Rubber Stamp Manufacturers, of 170, Fleet Street, in the City of London.
IMPROVEMENTS IN RUBBER FACED METAL TYPE AND IN THE MANUFACTURE
THEREOF, AND APPARATUS TO BE USED IN SUCH MANUFACTURE"
"
.
This Invention relates to improved rubber faced type, and to certain
improvements in the manufacture thereof, and in apparatus to be used in such
manufacture, the object being to provide a solid bodied rubber faced type which shall
afford greater support to and rigidity of the rubber facing and more accurate
registering of the rubber face to the corresponding body, and thereby greater
advantage for use than in types of the kind as at present made, and further to
provide for the manufacture of the type and also for apparatus for the purpose.
In the accompanying Drawings is represented the apparatus employed in this
manufacture. Fig. 1 shows the chase for holding the types, and Fig. 1ª is a cross
section thereof. Fig. 2 is the flask or frame for receiving the material for taking
the cast or mould of the type to be rubber faced, and Fig. 2 is a cross section
thereof. Fig. 3 shows the chase and the flask together ready for receiving the
material for forming the mould or cast. Fig. 4 is a cross section showing the chase
and flask filled with type bodies and the cast respectively, and the sheet of india
rubber compound for facing the type interposed between them. Fig. 5 shows the
chase and flask clamped together ready for the vulcanizing operation.
In carrying out the Invention metal types a (or it may be types of other
composition), cast in the ordinary or known way, are used as the foundations or
bodies, and are set up in a "chase "A in required number and sort. This chase is
provided toward the sides with pins, grooves, holes, ears, or slides (in the Drawings
pins B are shown), and a second chase or flask C is also provided with corresponding
holes, pins, ears, grooves, or slides (in the Drawings holes D are shown), so that
when the two are fitted together they shall both be in correct register the one to
the other.
The type bodies are locked in the chase by means of screws c, which press
against plates & laid along the inside of the chase, and the chase and types are
then subjected to a heat equal to or exceeding the degree at which the subsequent
vulcanizing will be carried out; after this the type and frame will be allowed to
cool down, and any shrinkage will be taken up by further turning of the
screws c.
The second chase or flask is now placed upon the chase containing the metal type
to be rubber faced, as shown in Fig. 4, and a mould E (see Fig. 3) is taken in
plaster-of-Paris or other material in the ordinary manner known to stereotypers.
When this has been effected the flask c containing the mould E is removed from the
type chase A, and a thin sheet of rubber compound b (see Fig. 3) is placed on the
face of types a in the chase A. The top flask C containing the mould will then be
replaced and will occupy the same position relatively to the types by means of the
registering fittings, as described, as previously when the mould was made. The two
are then clamped together substantially as shown in Fig. 5, and the rubber is
cured or vulcanized in the usual manner, and the vulcanized rubber stereotype
adheres to the metal types, and the individual types are afterwards separated, when
it will be found that the film or face of rubber will exactly conform in correct
register to and will be supported by the metal type configurations.
If required, the faces of the type may be roughened or corroded by electro-
deposition with a metal for which the rubber has affinity, or solutions may be

page_text: applied after the mould has been taken to facilitate or ensure greater adherence
of the rubber to the metal type during the subsequent vulcanizing.
The screws F, Figs. 2 and 4, pass through the flask C, and are for the purpose
of raising or lifting said flask C with its mould E evenly away from the type a in
the chase A, so that the said mould E may not be damaged as is now in use and
known to stereotypers.
Having now described the nature and particulars of my said Invention in such
wise that any one acquainted with the art may readily carry the Invention into
practical effect, I claim,
Firstly. In making rubber faced type the use of the registering chase A for
holding the type bodies a and the flask C for holding the mould or cast, as and
for the purpose herein set forth.
.
Secondly. In making rubber faced type the employment of type bodies and the
taking of a mould or cast therefrom, and the subsequent vulcanizing upon the type
face of said type bodies an elastic film or cushion which will exactly conform in
correct register to, and will be supported by the metal type configurations, as and
for the purpose herein specified.
Thirdly. For making rubber faced type as herein described, the chase A and
the locking screws and plates c, d, with its corresponding registering mould flask C,
with or without the raising screws F, constructed and operated as and for the
purpose herein described in reference to and shown by the Drawings:
In witness whereof, I, the said George Kissam Cooke, have hereunto set
my hand and seal, this Twentieth day of January, One thousand eight
hundred and eighty two.
In the presence of
WALTER A: BARLOW,
Patent Agent & Engineer,
6, St. Paul's Churchyard,
London, E.C.:
GEO. K. COOKE. (L.S.)