Year: 1887

page_text: Date of Application, 17th Nov., 1887
Complete Specification Left, 2nd Aug., 1888
Complete Specification Accepted, 21st Sept., 1888
I, DESMOND DYKES TYNTE O'CALLAGHAN of No. 140 Cromwell Road in the
County of Middlesex Major Royal Artillery, do hereby declare the nature of this
invention to be as follows:-
My invention has for its object to enable gun mountings or carriages to be tested
by the firing of charges in situations which do not admit of an ordinary service pro-
jectile being used, and it consists in employing in place of such projectile a cylindrical
casing of paper or other suitable material, filled with lead or other heavy, easily
fusible, material either in a pulverulent or granular state (such as small shot) the
charge being of the same weight as, or of greater weight than, that of the ordinary
projectile.
On firing a gun with a charge of lead in this condition, it is found that the lead is
either more or less entirely converted into vapour before it leaves the gun, or such
particles as may remain in a solid condition are not carried farther than, and mostly
not carried as far as the unconsumed pellets of powder of the charge, so that a gun
thus charged can be fired in all situations where blank charges can be fired.
By this means the advantages are gained that costly hydraulic and hydropneumatic
mountings, which can only be kept in order by frequent firing of the gun, can be
placed in sites from which it would be unsafe to fire service projectiles in times of
peace; that guns already mounted, that have never yet been fired, can now be fired
and have their mountings thoroughly tested although in situations, such as the Thames
defences, where it would not be possible to fire projectiles; and also that guns with
experimental mountings can always be tried even when the range is blocked by
shipping or obscured by fog, mist or smoke, and thus tedious and costly delays in
experiments will be avoided.
The said appliance may be constructed in a variety of ways, but by preference I
make the same of a cylindrical casing of paper, papier maché, or woven fabric, which

page_text: at the rear end is closed by a weak wooden bottom, while the front end is choked
round a wooden disc in which is a hole closed by a removeable plug for filling in
the charge, and to which may also be attached a grummet handle or becket for
handling the appliance.
For guns of large size the appliance may be made in two or more separate sections
for the convenience of handling.
ABEL & IMRAY,
Agents for the Applicant.
Improved Appliance for Use in Testing the Efficiency of Artillery
Mountings.
I, DESMOND DYKES TYNTE O'CALLAGHAN of No. 140 Cromwell Road in the County
of Middlesex Major Royal Artillery 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 :-
My invention has for its object to enable gun mountings or carriages to be tested
by the firing of charges in situations which do not admit of an ordinary service pro-
jectile being used, and it consists in employing in place of such projectile a cylindrical
casing of paper or other suitable material filled with lead or other heavy, easily fusible,
material either in a pulverulent or granular state (such as small shot) the charge being
of the same weight as, or of greater weight than, that of the ordinary projectile.
On firing a gun with a charge of lead in this condition, it is found that the lead is
either more or less entirely converted into vapour before it leaves the gun, or such
particles as may remain in a solid condition are not carried further than, and mostly not
carried as far as, the unconsumed pellets of powder of the charge, so that a gun thus
charged can be fired in all situations where blank charges can be fired.
By this means the advantages are gained that costly hydraulic and hydropneumatic
mountings, which can only be kept in order by frequent firing of the gun, can be
placed in sites from which it would be unsafe to fire service projectiles in times of
peace that guns already mounted, that have never yet been fired, can now be fired
and have their mountings thoroughly tested although in situations, such as the Thames
defences, where it would not be possible to fire projectiles; and also that guns with
experimental mountings can always be tried even when the range is blocked by
shipping or obscured by fog, mist or smoke and thus tedious and costly delays in
experiments will be avoided.

page_text: The said appliance may be constructed in a variety of ways but by preference I
make the same of a cylindrical casing of paper, papier maché, or woven fabric which
at the rear end is closed by a weak wooden bottom while the front end is choked
round a wooden disc in which is a hole closed by a removeable plug for filling in the
charge and to which may also be attached a grummet handle or becket for handling
the appliance.
For guns of large size the appliance may be made in two or more separate sections
for the convenience of handling.
.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what I claim is :-
The use for testing the efficiency of artillery mountings, of an appliance, to be used
in place of ordinary projectiles, consisting of a lightly made receptacle of paper or
other suitable material charged with lead or other heavy easily fusible material in a
pulverulent or granular state, substantially as and for the purpose herein described.
Dated this 2nd day of August 1888.
ABEL & IMRAY,
Agents for the Applicant.