Improvements in Blasting Cartridges.
Year: 1899

page_text: Improvements in Blasting Cartridges.
I, FREDERICK RENDER, of Albert Street, Manchester, in the County of Lancaster,
Corn Miller, do hereby declare the nature of this invention to be as follows:-
This invention relates to a cartridge or case for explosives more particularly
for submarine or subaqueous blasting but is also applicable to cartridges for
other blasting purposes.
It is designed to provide for the air tight scaling of the cartridge and the
making of an air and watertight joint between the fuse and cartridge after the
fuse is inserted which cannot readily be severed or damaged.
It consists essentially in constructing the cartridge case with a nipple or tube
covered and protected with a rubber sleeve or cap through which the detonator
and fuse is inserted and tapes or bands firmly attached to the outside by which
the fuse is securely held and an unbreakable air and water tight joint obtained
an eye or equivalent being provided to which the lapping cord is fastened.
In carrying out the invention I attach to or insert preferably in the top
or cap of the cartridge a nipple or tube of brass or other suitable metal which
projects about an inch or so at the base of the tube is formed or attached an
eye to which a cord or cords may be fastened.
The nipple or tube is preferably soldered in its place and is of such a diameter
as will readily allow the detonator and fuse to pass through to the interior of
the cartridge. The nipple or tube is preferably grooved or roughened on its
outside to more securely fasten a rubber cap or sleeve thereon. Over the tube
or nipple I place a rubber cap or sleeve closed or sealed at one end extending
a short distance say about one inch beyond the end of the nipple and outside the
tube or nipple I attach one two or more. tapes or bands with loose ends which
extend the length of the rubber cap. The rubber cap and tapes are at one end
firmly attached to the nipple by lapping or by a metallic clip or other suitable
way. The rubber cap makes the cartridge perfectly air and watertight protect-
ing the explosive or blasting compound for any reasonable time.
When the fuse is inserted the rubber cap or sleeve and the tape are tightly
wound round the fuse the tapes whilst not interfering with the elasticity of
rubber serve to ensure an unbreakable watertight joint being made.
To fix the detonator ready for firing the end of the rubber tube or cap is cut
off as close to the end as possible the detonator and fuse inserted through it and
the brass nipple into the explosive and the fuse then firmly bound round with
the cord attached to each cartridge so that the tapes cover the rubber and so
protect it from tearing.
001
T
1
1000
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.

page_text: Improvements in- Blasting Cartridges.
I, FREDERICK RENDER, of Albert Street, Manchester, in the County of Lancaster
Corn Miller, 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 a cartridge or case for explosives more particularly
for submarine or subaqueous blasting but is also applicable to cartridges for
other blasting purposes.
It is designed to provide for the air tight sealing of the cartridge and the
making of an air and watertight joint between the fuse and cartridge after the
fuse is inserted which cannot readily be severed or damaged.
It consists essentially in constructing the cartridge case with a nipple or tube
covered and protected with a rubber sleeve or cap through which the detonator
and fuse is inserted and tapes or bands firmly attached to the outside by which
the fuse is securely held and an unbreakable air and watertight joint obtained
an eye or equivalent being provided to which the lapping cord is fastened.
The invention will be fully described with reference to the accompanying
drawings.
Fig. 1. Elevation partly in section showing the top tube covered and closed.
Fig. 2. Elevation showing top tube opened to receive the fuse and detonator.
Fig. 3. Elevation partly in section showing fuse secured in position.
The cartridge A is made in the usual way with a case B and a top or cap C
secured thereto.
To the case preferably the top or cap C I attach a nipple or tube D of brass
or other suitable metal of an inch or so in length and at or near the base of the
tube D is formed or attached an eye E to which a cord or cords may be fastened.
The nipple or tube D is secured by solder or otherwise in its place and is of
such a diameter as will readily allow the detonator and fuse F to pass through
to the interior of the cartridge. It may be ground or roughened on its exterior
surface to more securely fasten a rubber cap or sleeve G thereon.
Over the tube or nipple DI place a rubber cap or sleeve G closed or sealed at
its free end g and extending a short distance say about one inch beyond the
end of the nipple.
Over the rubber cap or sleeve G I affix one or more tapes or bands H extend-
ing the greater part of its length. I prefer to attach the tapes H in the form
of a loop as in Fig. 1 being securely held by a thin cord or threadh lapped
round it, this lapping also more securely attaches the rubber cap G. A metallic
clip or other means may be employed to secure the rubber cap G and tapes H.
The rubber cap makes the cartridge perfectly air and watertight protecting the
explosive or blasting compound for any reasonable time, and the tapes serve to
secure the fuse in position when inserted a loose length of thin cord or thread f
being provided to lap round the tapes and cap after the fuse is inserted, see
Fig. 3.
To fix the detonator ready for firing the looped end of the tape H is severed
and the end g of the rubber cap is cut off, see Fig. 2, the detonator and fuse F
are inserted through it and the nipple D into the interior and the tape and
rubber cap are then tightly bound round with the cord f. The tapes cover and
protect the rubber cap without interfering with its elasticity and serve to ensure
an unbreakable watertight joint being made between the cartridge A and the
fuse F.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. A cartridge for blasting purposes constructed with a tube or nipple to
receive the detonator and fuse, and a sealed rubber cap attached thereto sub-
stantially as described.
2. A cartridge for blasting purposes constructed with a tube or nipple to
receive the detonator and fuse, a sealed rubber cap attached thereto, and tapes
or bands attached to the outside by which the fuse when inserted is secured,
and an unbreakable watertight joint is obtained substantially as described.
3. A cartridge for blasting purposes having the several parts constructed and
arranged in combination substantially as and for the purposes described and
shown.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, London & Birmingham, Patent Agents.