Improvements in Radiant Tissue for Lamps.
Year: 1895

page_text: Improvements in Radiant Tissue for Lamps.
I SAMUEL HENRY CROCKER of 31, Furnival Street, Holborn, Engineer, do
hereby declare the nature of this invention to be as follows.-
-
This invention relates to the manufacture of iradiant tissue, and has for its object
to produce surfaces of refiactory material in a suitable state of tenuity, to admit
of then practical employment for the production of incandescent light.
My invention consists essentially in forming thin sheets of tissues of such
refractory material as may be satisfactorily adapted to the purpose and perforating
them with holes.
In order to carry ont my invention I take a quantity of a suitable metallic oxide
or other metallic combination which will serve the purpose and reduce it to a
plastic state by the admixture of a suitable liquid substance.or composition which
will dry or harden,ior which may be subsequently altered or removed if required.
I convert the so formed plastic mass into sheets by cutting, rolling, or other
suitable means, and then perforate the sheets with holes of the desired shape and
size by punching or by any other convenient method.
I may also prepare the refractory materials in a more liquefied state, and apply
them in the shape of a coating to a sheet of paper or other surface which has been
previously prepared to enable and secure its perforation and subsequent separation.
The coating applied to the supporting surface is allowed to harden or dry
sufficiently for the purpose. Such refractory materials as may be conveniently
softened by heat I may convert into perforated sheets by forming and perforating
the sheets in a heated state.
In applying or adapting the perforated sheets to the purposes of .illumination,
I prefer to arrange them singly or otherwise in connection with suitable gas
buruers, so that the flame may impinge upon or surround them and raise thein
to a state of incandescence and thereby produce the light common to matter in this
state.
1002
I, SAMUEL HENRY CROCKER of 31, Furnival Street, London, Engineer, do
heruby declare the nature of this invention, and m what manner the same is to be
performed, to be particularly described and ascertained in and by the following
5 statement.-
In carrying out my invention, I take a suitable quantity of the substance or
composition known as paper pulp in a sem liquid state, and I mix and incorporate

page_text: therewith a sufficient quantity of zirconia o other rare metallic combination
which is well knowu to resist volatilization by heat sufficiently for the purpose,
or may use any suitable mixture of two or more of such known inetallic
combinations.
To the paper pulp in the semiliquid state, I may also add a small quantity of
starch to facilitate its conversion into the sheets as her ematter referred to, but
other substances having similar or suitable properties may be substituted or added
for the same purpose.
1 allow the composition so formed to dry or harden to a suitable degree, and
then form it into sheets, after which I perforate them with holes of any desued
shape or size, and thereby produce a finely reticulated area of material capable
of being rendered radiant or incandescent by heat, and which I call a radiant
tissue.
firstly
I may obtain perforated sheets from my composition by two methods, uz,
by forming the composition into sheets by tolling, cutting, pressing, or othe
suitable means,
and then perforate the sheets by mechanical appliances, on secondly
by forming the sheet with the required number of holes or spaces throughout its
area To obtain the sheet in this latter form, I first take a piece of perforated
water-proof paper, sheet metal, or other suitable material, and I coat the surface
with my composition in its liquid state, preferably by pouring the same upon the
perforated sheet before mentioned after the well known method of paper making,
and allowing it to drain and day When the coating applied is thin in substance and
the perforations sufficiently large, the coating will not extend over the whole alea
of the perforated sheet, but some of the liquid composition will fall through the
perforations, and hence the sheet will be formed of the composition resembling
the perforated sheet on which it has been deposited The sheets made from this
composition of refractory and cellulose materials before referred to, may be
consolidated by prossing, rolling, or other suitable means
The perforated sheets may now be cut into any required shape, and used either
in a flat state, or they may be curved and joined together so as to form hollow
truncated cones, or made up into hollow pyramids or in any other regular or
regular figure suitable for the economic application of heat for pro lucing the
requined mcandescence. The organte matter contamed in these sheets may be
buint or destroyed in the ordinary manner
In order that my invention may be more fully explained, I will now refer to the
vations figuer upon the accompanying sheet of drawings, which illustrate some of
the way in which I intend to use the perforated sheets as radiant tissue
The
black lines indicate the material and the white paits in between indicate
perforations or spaces.
Fig. 1 shows my perforated sheet made up into the form of a hollow truncated
cone,
Fig. 2 shows a hollow pyramidal form made up of 4 sheets cut to the required
shape and attached or cemented together at then abutting edges
Fig. 3 shows the perforated sheets made up in a similar mannet but tuangulaı
on plan instead of square
After the organic matter in the perforated sheet has been removed, the black
part marked A indicates the retractory material, and the white diamond shaped
spaces are marked B.
When I use two or more pieces of the perforated sheet to
form the complete hood or mantel I may attach these pieces together by means of
a suitable cement, or connect them together by platinum wires oi the like
Having now particularly described and ascertained the nature of my said
invention, and in what manuer the same is to be performed, I declare that what
I claim 18
(1.) The perforation of sheets composed of or contaming cellulose and suitable
refractory materials for the production of incandescent light in the manner and for
the pin poses specified

page_text: (2.0 Forming perforated sheets by depositing upon a porforated pattern a
semiliquid composition containing cellulose and suitable refractory materials for
the production of radiant tissue.
Dated this 18th day of June 1895.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.