Ammunition and explosives – Cartridges – Practice projectile type
Patent
1994-08-25
1995-11-07
Tudor, Harold J.
Ammunition and explosives
Cartridges
Practice projectile type
102395, 42 77, F42B 800, F42B 3010
Patent
active
054639581
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a mortar adapter which has the form of a dummy mortar shell or projectile and which is intended to fit the barrel of a standard mortar. The adapter has a practice missile launching tube and a practice missile breech position and can be loaded with a practice projectile whose caliber is smaller than the caliber of the mortar barrel. The object of the present invention is to provide a mortar adapter which can be used in mortar practice and which will accommodate a practice projectile in a manner such that as the practice projectile is inserted in the mortar adapter, a safety device will be brought automatically from an active safe state to a released and locked state when the adapter is inserted into the mortar barrel.
The object is achieved in that the safety function operates automatically and has the characteristics features set forth in the characterizing clause of the following Claims.
The invention will now be described in more detail with reference to an exemplifying embodiment thereof and also with reference to the accompanying drawings, in which
FIG. 1 is a longitudinal sectional view of the mortar adapter, adapter, and illustrates the locations of a practice projectile and a safety mechanism device in the form of an end closure piece, not shown in the FIG.;
FIG. 2 is a cross-sectional view of the mortar adapter taken along the line II--II in FIG. 1 and rotated through 90.degree.;
FIG. 3 is a top view of the end-closure piece;
FIG. 4 is a side view of the end-closure piece;
FIG. 5 is a cross-sectional view of the mortar adapter similar to the view shown in FIG. 2, with the end-closure piece partially inserted into the mortar adapter from one side thereof and located in a position of readiness in front of the launching tube;
FIG. 6 illustrates the mortar adapter partially inserted into the mortar barrel and the end-closure piece inserted in a weapon-safe position in the mortar adapter; and
FIG. 7 is a contemplated cross-sectional view illustrating the mortar adapter inserted to its bottom position in the barrel, wherein the Figure shows the end-closure piece fully inserted into the mortar adapter and locked in this position, although in a safety-release position for firing of the practice projectile.
FIG. 1 is thus a longitudinal sectional view of the mortar adapter, the largest dimension of which corresponds to the caliber of the mortar barrel. The rear end of the mortar adapter is the upper end of the illustrated adapter in FIG. 1, and it is thus this end of the adapter that is inserted to the bottom position in the mortar. The mortar adapter has a centre bore 2 which forms the projectile breech position, i.e. the position of the practice projectile when located in its firing position in the mortar. The bottom end of the illustrated mortar adapter, i.e. the end which faces upwards in the mortar barrel, is provided with an attachment region 3 for accommodating the launching tube which serves as a practice projectile aiming or sighting tube. When firing a practice projectile with the aid of the mortar adapter, the adapter is first loaded with the practice projectile, placing the projectile in its breech position. The bottom of the breech is formed by an end-closure piece, hereinafter called the breech block, (not shown in FIG. 1), which is inserted into grooves 4 and 5 which extend transversely to the longitudinal axis of the breech and from one side of the mortar and beyond the other side of the breech, without passing through the other side of the mortar adapter.
FIG. 2 is a cross-sectional view taken on the line II--II in FIG. 1 and illustrates the cylindrical bore 2 of the breech.
The grooves 4 and 5 are shown to extend from the right side of the mortar adapter as shown in FIG. 2, and to extend beyond the left side of the breach region. As will be seen from the Figure, the grooves have a semi-circular configuration after passing the symmetry line 6--6. A breech block is now inserted into the grooves 4 and 5, from the right side of the FIG. 2 illustration. The bree
REFERENCES:
patent: 2821923 (1958-02-01), Alderson
patent: 3276374 (1966-10-01), Stadler et al.
patent: 3948179 (1976-04-01), Gawlick et al.
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