Improvements in or relating to Time Fuses for Projectiles.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Time Fuses for Projectiles.
I, AUGUST REICHWALD, of 9, New Broad Street, in the City of London, Steel,
Iron, Metal, and Mineral Merchant, do hereby declare the nature of this inven-
tion (a communication to me from abroad by the Firm of Fried Krupp, of Essen,
in the Empire of Germany, Cast Steel Manufacturers), to be as follows:-
This invention relates to the provision of time fuses, with a safety guard for
ensuring safe conveyance, which safety guard, when timing the fuse, is auto-
matically put out of action. The safety guard constructed according to this
invention presents advantages, apart from its simple construction, owing to the
circumstance that it opposes an efficient resistance to any rotation of the fuse-
ring, tending to remove the latter from the zero position; consequently the fuse-
ring may be arranged so that it revolves so easily as to admit of being regulated
by hand without the aid of a wrench, while at the same time there is no occasion
to fear that any spontaneous displacement of this part, will occur during the
conveyance.
According to this invention, there is inserted in the main body of the fuse, a
safety guard or safety lever, which is pivotted on a horizontal axis, its lower
part being forced towards the outside. by a flat spring inserted into the lever.
During the "safety" position of the fuse, the lower arm of the safety lever,
takes into a recess of the fuse-ring, the upper arm of the lever projecting into the
ignition chamber, and blocking the way of the hammer and the priming pellet,
towards the firing needle. While in this position the safety lever also prevents
any accidental rotation of the fuse-ring, for instance while being conveyed in the
limber.
In timing the fuse, by turning the fuse-ring with a certain amount of force,
the lower arm of the safety lever is forced from the recess of the fuse-ring, towards
the interior, while at the same time the upper arm of the safety lever turns in
the opposite direction, thus receding from the ignition chamber, and clearing the
way of the hammer towards the needle.
By this invention a safety arrangement for time fuses is provided, in which
a premature becoming "live" of the fuse, as well as unintended revolving of
the fuse-ring is prevented, by the lever pivotted within the main body of the fuse.
which lever as previously described, while the fuse is in the safety" position
for travelling, is forced by the pressure of a spring, so that one of its armis enters
a recess of the fuse-ring, while its other arm is preventing movement of the
hammer carrying the priming pellet.
D
11
1011
1000

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Time Fuses for Projectiles.
I, AUGUST REICHWALD, of 9, New Broad Street, in the City of London, Steel,
Iron, Metal, and Mineral Merchant, do hereby declare the nature of this inven-
tion (a communication to me from abroad by the Firm of Fried. Krupp, of Essen,
in the Empire of Germany, Cast Steel Manufacturers), 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 the provision of time fuses, with a safety guard for
ensuring safe conveyance, which safety guard, when timing the fuse, is auto-
matically put out of action. The safety guard constructed according to this
invention presents advantages, apart from its simple construction, owing to the
circumstance that it opposes an efficient resistance to any rotation of the fuse-
ring, tending to remove the latter from the zero position; consequently the fuse-
ring may be arranged so that it revolves so easily as to admit of being regulated
by hand without the aid of a wrench, while at the same time there is no occasion
to fear that any spontaneous displacement of this part will occur during the
conveyance.
In the annexed drawing. Fig. 1 shews a vertical section through the centre of
the fuse, illustrating the new safety arrangement in the " safety" position.
Fig. 2 shews a similar section illustrating the safety-guard when put out of
action. Fig. 3 is a horizontal section on the line R-S of Fig. 1.
In the main body of the fuse a safety-guard or safety lever b is inserted,
which is pivotted on a horizontal axis c, its lower part being forced towards the
outside by a flat spring inserted into the lever.
During the safety" position of the fuse, Fig. 1, the lower arm of the lever b
takes into a recess of the fuse-ring f, the upper arm of the lever projecting
into the ignition chamber and blocking the way of the hammer e and the prim-
ing pellet towards the firing needle. While in this position the safety lever
also prevents any accidental rotation of the fuse-ring, for instance while being
conveyed in the limber.
In timing the fuse, by turning the fuse-ring with a certain amount of force,
the lower arm of the safety lever is forced from the recess g towards the interior,
while at the same time the upper arm of the lever turns in the opposite direction.
thus receding from the ignition chamber and clearing the way of the hammer
towards the needle (Fig. 2).
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is-
A safety arrangement for time fuses, in which a premature becoming "live"
of the fuse, as well as unintended revolving of the fuse-ring is prevented, by
a lever (b) pivotted within the main body of the fuse (a), which lever while the
fuse is in the ** safety position for travelling, is forced by the pressure of a
spring (4), so that one of its arms enters a recess g of the fuse ring, while its other
arm is preventing movement of the hammer carrying the priming pellet.
A 101
BREWER & SON,
London and Leeds, Agents for the Applicant.