Improvements in or Applicable to Cartridges Employed for Blasting in Mines and other Places where Inflammable Gases are Present.
Year: 1887

page_text: Date of Application, 25th Oct., 1887
Complete Specification Left, 25th July, 1888
Complete Specification Accepted, 31st Aug.,
1888
Improvements in or Applicable to Cartridges Employed for Blasting
in Mines and other Places where Inflammable Gases are Present.
I MILES SETTLE of Darcy Lever near Bolton in the County of Lancaster Mining
Engineer and Colliery Proprietor do hereby declare the nature of this invention to
be as follows:-
The principal object of this invention is to dispense with the outside bags or casings
of the cartridges employed for blasting in mines and other places where inflammable
gases are present; and the invention consists chiefly in embedding the explosive
charge and the conducting wires in a solid cylinder or casing of ice.
The cylinder or casing of ice can either be frozen whilst the explosive charge is
supported in the centre or nearly so by pins, pegs or discs or otherwise; or it can
be frozen separately with a recess left therein for the insertion of the said explosive
charge, so that the latter can be placed in its ice casing either at the pit mouth
or in any other convenient situation.
It will be evident that if preferred an outside casing or bag may be used in addition
to the ice cylinder or casing for the sake of convenience and in this case the ice
instead of being hard and solid may be in the form of snow or of an ordinary
edible ::
water ice, and it might then be preferable to use pins pegs or discs to
keep the explosive charge or cartridge in the centre of the bag or casing.
Dated this 24th day of October 1887.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: Improvements in or Applicable to Cartridges Employed for Blasting
in Mines and other Places where Inflammable Gases are Present.
I MILES SETTLE of Darcy Lever near Bolton in the County of Lancaster Mining
Engineer & Colliery Proprietor 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 :-
For blasting in coal mines and other places where inflammable gases are present, in
order to prevent accidents from the ignition of such gas by the explosion of the
cartridge, it is customary to enclose the explosive charge in a bag or casing containing
water, which, on the explosion taking place immediately extinguishes any flame or
sparks which might ignite the inflammable gas.
The principal object of this invention is to dispense with the outside bags or casings
of such cartridges employed for blasting in fiery mines and other places where
inflammable gases are present and to overcome an alleged objection that when using
the water cartridges the water is sometimes driven out by carelessness in the
"stemming" or "tamping."
The invention consists chiefly in embedding the explosive charge and the conducting
wires in a solid cylinder or casing of ice, instead of using water in a liquid state.
The cylinder or casing of ice can either be frozen whilst the explosive charge is
supported in the centre or nearly so by pins pegs discs or otherwise; or it can be
frozen separately with a recess left therein for the insertion of the said explosive
charge so that the latter can be placed in its ice casing, either at the pit mouth or in
any other convenient situation, and the opening or recess can be then closed by a
block of ice.
It will be evident that if preferred, an outside casing or bag may be used in
addition to the ice cylinder or casing for the sake of convenience, and in this case the
ice instead of being frozen hard and solid may be in the form of snow or in a partially
frozen state like an ordinary edible "water ice" and it might then be preferable to
use pins, pegs, discs or wires to keep the explosive charge or cartridge in the centre
(or nearly so) of the bag or casing.
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 :-
The use in cartridges employed in mines or other places where inflammable
gases are present, of ice, snow, or partially frozen water (in place of water or other
Huid in a liquid state) to surround the explosive charge, substantially in the manner
and for the purpose hereinbefore particularly set forth.
T
1000