Improved Appliances for Holding Calcium Carbide in Fixed Quantities for Cycle and other Lamps.
Year: 1899

page_text: Date of Application, 17th Oct.,
1899
Complete Specification Left, 31st May, 1900-Accepted, 18th Aug., 1900
PROVISIONAL SPECIFICATION.
Improved Appliances for Holding Calcium Carbide in Fixed
Quantities for Cycle and other Lamps.
I, HENRY SALSBURY, of 124, Long Acre, London, Lamp Manufacturer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to certain improved appliances for holding calcium
carbide in fixed quantities for cycle and other lamps.
For the purpose of my invention I employ any desired number of bands of
metal or of metal and other material say India rubber with canvas screens be-
tween which the calcium carbide can be placed in any suitable manner weighed
up or otherwise to suit the sizes of the holders.
As an illustration I prepare a flat band and having placed it on edge I cover
it with a disc shape of canvas on to which I place the carbide the canvas sinking
by the weight and the carbide levelled. A portion of the disc of canvas remains
above the top edge of the band and is spread outwards for the reception of a
second disc of canvas which covers the carbide; another band somewhat larger
than the first is then pressed over and gathers the edges of both canvas with
sufficient grip to retain them and the carbide in position.
In some cases the two canvas discs may be gripped between two outer bands
and the carbide be in contact with the inner band as well as with both discs of
canvas which when the article is complete is somewhat like a drum the canvas
taking the place of the ordinary drumheads.
Only one metal band and one india rubber band and the canvas ends may be
used or any other number of either of them as desirable and in some cases the
canvas may be in bag form to go over or within bands and after being charged
with the carbide the mouth can be tied and otherwise fastened.
Should the expansion of the carbide be greater than is allowed for the canvas
gatherings between the bands will give out or the bands will draw apart and
so prevent bursting of the canvas.
The invention permits of the spent carbide being instantly withdrawn in a
compact form from a lamp or generator and disposed of without the bother of
removing the residue by washing out the container in the usual manner.
If desired the bands may be preserved for making up fresh drums.
Dated this 16th day of October 1900
H. GARDNER,
Patent Agent. 166, Fleet Street, London,
Agent for the said H. Salsbury.

page_text: Improved Appliances for Holding Calcium Carbide in Fixed
Quantities for Cycle and other Lamps.
I, HENRY SALSBURY, of 124, Long Acre, London, Lamp Manufacturer, do
hereby declare the nature of this invention and in what manner the same is
to be performed to be particularly described and ascertained in and by the
following statement:―
This invention relates to certain improved appliances for holding calcium
carbide in fixed quantities for cycle and other lamps.
My invention will be understood from the following description aided by
the accompanying drawings in which Figure 1 is a section of a complete
appliance in which the calcium carbide is contained within two pieces of linen
or like material held between two ordinary bands.
Figure 2 is a section of a complete appliance in which the calcium. carbide
is contained within one band, the linen, canvas, or other material being stretched
across the open ends of the bands, and retained by separate bands.
Figure 3 is a perspective elevation of a band. Figure 4 a perspective elevation
of a piece of linen, canvas, or other material containing the calcium carbide, and
which piece of linen lies within the band, Figure 3.
Figure 5 is a perspective elevation of a piece of linen or other material which
covers the top of the band, Figure 3, when the linen and calcium carbide,
Figure 4, is inserted therein.
Figure 6 is a perspective elevation of a cap or cup ring which goes over the
ring, Figure 3, and the linen, Figures 4 and 5, and with the band, Figure 3,
holds the free edges of same securely.
Figure is a sectional elevation of the appliances, Figures 3, 4, 5, and 6,
complete in the position they occupy, the dotted lines showing a lid which may
be placed over same to protect the calcium carbide from damp and to enable
the appliances to be carried in the pocket.
Figure 8 is a perspective sectional elevation of a complete appliance in
which the cup ring forms the generator for insertion into a lamp.
For the purpose of my invention, I employ any desired number of bands A, B,
of metal or of metal and other material, say, India rubber with canvas screens C, D)
between which the calcium carbide E can be placed in any suitable manner
weighed up or otherwise to suit the sizes of the holders which may be inserted
into the generating vessel of a lamp or form the generator.
I prepare a flat band A and having placed it on edge I cover it with a disc
shape of canvas C, on to which I place the carbide E, the canvas C sinking by
the weight and the carbide E levelled. A portion C of the disc of canvas C
remains above the top edge of the band A and is spread outwards, see Figure 4,
for the reception of a second disc of canvas D, Figure 5, which covers the car-
bide E, another band B somewhat larger than the first is then pressed over and
gathers the edges C, D¹, of both canvas with sufficient grip to retain them
and the carbide in position.
In some cases, as at Figure 2, the two canvas discs C, D, may be gripped
between two outer bands B1, B2, and the carbide be in contact with the inner
band as well as with both discs of canvas C, D), which when the article is com-
plete is somewhat like a drum, the canvas taking the place of the ordinary
drumheads.
Only one metal band and one india rubber band and the canvas ends C', D',
may be used or any other number of either of them as desirable.

page_text: In some cases, as at Figures 7 and 8, the rings B, or it may be the ring A
may have a diaphragm or bottom B¹ at one end, and when the article is made
ready for use, as in Figure 7, have a cover applied as in dotted lines F, so that
the calcium carbide can be protected from damp or wet and also be carried in
the pocket and when required for use all that is necessary is to remove the
cap and place the article open side up into the generator of a lamp and turu
on the tap to supply the calcium carbide with water to generate gas in the
manner well known, the water permeating through the canvas to the calcium
carbide, or the article when constructed, as at Figure 8, may form the generator
for insertion into the lamp body, so that a person may recharge the generator
direct instead of a separate appliance to be fitted in the generator.
Should the expansion of the carbide be greater than is allowed for the canvas
gatherings between, the bands will give out or the bands will draw apart and so
prevent bursting of the canvas.
The invention permits of the spent carbide being instantly withdrawn in a
compact form from a lamp or generator and disposed of without the bother of
removing the residue by washing out the container in the usual manner.
If desired, the bands may be preserved for making up fresh drums.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. The improved appliance for holding calcium carbide in fixed quantities
for cycle and other lamps, consisting of two pieces of canvas or other porous
fabric for retaining the carbide, the canvas being held securely by bands, sub-
stantially as set forth.
2. A calcium carbide holder or retainer, consisting of two pieces of canvas or
other porous fabric having their free ends held securely between two rings or
bands, substantially as set forth.
3. In a calcium carbide holder the combination of two pieces of canvas or
other porous fabric C, D, for retaining the calcium carbide E, the rings A
and B, Figures 1, 7, or 8, or A and B1, B2, Figure 2, for securing the free edges of
the fabric, C, D, all arranged substantially as set forth.
The DIST
01
Tây 100.
R. CORE GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Henry Salsbury.