Tag Archive for 'antitank mine'

T. Mi. Pilz 43: Tellermine—Type 4 (Mushroom Head)

T. Mi. Pilz 43: Tellermine Type 4 (Mushroom Head)

This type of mine is composed of fewer parts, is simpler in construction, and more easily assembled than types 1, 2, and 3. It also appears to be less susceptible to sympathetic detonation than the three other types.

It has the usual Tellermine contour, but no cover is provided, necessitating a rubber seal and a pressure spring. The top of the mine is covered by a “mushroom” head pressure plate which screws into the fuze cavity. This head is made of two thin pieces of pressed steel formed into a hollow shell about 7.5 inches in diameter and about 1 inch thick.

The mine has an aperture in its base and one in its sidewall in which either a pull or tension igniter can be used.

The fuze for the mine is very simple in operation, and consists of a shear pin and a spring-loaded firing-pin. When sufficient pressure is exerted on the mushroom head, the shear pin is broken off and the spring-loaded firing-pin plunges into the fuze primer, setting off the detonator. The detonator ignites the penthrite booster which, in turn, sets off the main charge of amatol.

This fuze, which is also used in types 2 and 3 German Tellermine, is dropped into the fuze cavity rather than screwed in as in the case of the type 1 Tellermine.

SPECIFICATIONS

Diameter         11.29 ins.
Weight         18 lb., 1.5 oz.
Bursting charge         Amatol
Bursting charge weight         10 lb., 6.94 oz.

German: p. 304

T. Mi. 35 (Stahl): Tellermine—Type 3 (Steel)

T. Mi. 35 (Stahl): Tellermine—Type 3 (Steel) WW2

The design of the third type of Tellermine does not differ greatly from that of the other two models. It is distinguished by the radial flutings on the upper face (a), which extend to the edge of the surface. On the underside of this pressure plate (a) is a flat strengthening ring (b), spot-welded to the plate.

The ring (c) is secured to the body of the mine (d) by a number of punches. This ring retains the pressure plate in position against the spring (b). The rubber seal (i) between the body of the mine and the pressure plate protects the operating mechanism against moisture and dust.

The mine body and the base (f) are similar in construction to the type 1 T. Mi. 35, type 1 having an adapter to take an additional side igniter, which is located diametrically opposite the handle, and type 3 having an adapter for the base igniter. In the case of type 3, the igniter is screwed down until it rests on the rim of the socket (h), and the screw plug (g) is then not required.

The design for the mine appears to be a compromise between the Tellermine No. 1 and the Tellermine No. 2. In the former the whole of the mine cover forms the pressure plate and the mine is known to be subject to blast effects. The smaller area of the pressure plate in Tellermine No. 2 reduced the susceptibility of the mine to blast but at the same time reduced the available area for operating the mine.

SPECIFICATIONS

Diameter         12.75 ins.
Height 3.21 ins.
Weight 21.50 lb.
Bursting charge 66-34 Amatol
       weight 13.9 lb.
Booster pellets 3 PETN

German: p. 303

T. Mi. 42: Tellermine—Type 2

 T. Mi. 42: Tellermine—Type 2 (WW2 Teller Mine Antitank Mine)

The type 2 Tellermine consists of a flat, circular steel bottom, a steel body having a cylindrical sidewall, and a slightly dome-shaped top with a centrally located well approximately 6.9 inches in diameter. A fluted pressure top is fitted into the well. The silhouette of this mine differs from those of types 1 and 3 principally in that the central pressure top with the fuze well cover extends above the surface of the rest of the body. The mine also contains two other detonator wells, one in the side of the body and one in the bottom.

The igniter body is cylindrical in form and is approximately 1.5 inches long and .81 inch in diameter. The firing-pin head extends above the surface of the body, is hemispherical in shape, and is supported by a heavy shear pin which rests on the upper surface of the body. The lower end has a threaded extension over which a thin metal cap containing a paper disk is screwed. This cap is used as a protection for the primer and, with the paper disk removed, as a means for holding the detonator against the igniter prior to assembly in the mine.

A bursting charge of 10.75 pounds of cast TNT is used. Three PETN booster pellets are imbedded in the bursting charge, one around each detonating well.

SPECIFICATIONS

Diameter        12.7 ins.
Height 4.00 ins.
Weight 18.36 lb.
Bursting charge Cast TNT or 50/50 Amatol
Bursting charge weight 10.75 lb.
Booster pellets 3 PETN

German: p. 302

T. Mi. 35: Tellermine—Types 1a & 1b

T. Mi. 35: Tellermine Types 1a & 1b

There are two models of the type 1 Teller Land Mine. Both types, which are painted olive drab, consist of a flat, circular bottom plate, a steel dome-shaped body which contains the bursting charge, an aluminum retaining ring into which a rubber sealing ring is assembled, and a cast aluminum top, also slightly dome-shaped. A formed iron wire handle is attached to the side wall by welded steel straps.

The bursting charge is initiated by action of the pressure igniter which is screwed into the well cup in the top of the mine. This igniter is cylindrical in form, 2.3 inches long, and 1.625 inches in diameter. A heavy compression spring, located inside the well, is held in position by a forward lip on the underside of the top of the mine. Two other well cups, one through the sidewall and one through the bottom plate, are provided for use when auxiliary pull-type igniters are assembled. On the body cover, concentric with a brass setting screw, are stamped two arrows, one pointing to the “Scharf” (armed) marking, and the other to the “Sicher” (safe) marking. A red spot .1 inch in diameter on the head of the setting screw is used to aline the setting mechanism with the index marks.

The only difference between type 1a and type 1b is in the loading of the bursting charge. Type 1a contains a 10.55 pound charge of pressed TNT; type 1b contains an 11.41 pound charge of cast TNT and three large PETN booster pellets imbedded in the bursting charge. Each pellet has a cavity into which a detonator well is assembled.

SPECIFICATIONS

            Type 1a           Type 1b
Diameter 12.75 ins. 12.75 ins.
Height 3.50 ins. 3.25 ins.
Weight 19.25 lb. 21.20 lb.
Bursting charge Pressed TNT Cast TNT
Bursting charge weight 10.55 lb. 11.41 lb.
Booster pellets 3 PETN

German: p. 301

Topf Mine: Antitank Mine

Topf Mine: Antitank Mine

The Topf Mine, a completely non-metallic, waterproof, antitank mine, consists of a circular body filled with a 12 1/2-pound charge of TNT, a primer plug assembly, and an igniter. The top of the mine is flat, with a fixed pressure plate in the center slightly higher than the surface; a 4 1/2-inch circular recess located in the bottom takes the primer plug and igniter assembly. The outer casing is made of a hard pulp-like material covered with pitch. The mine rests on three glass studs; two of the studs secure a pasteboard carrying handle, while the third, which is sometimes larger than the two others, is used as a filler plug.

The primer plug assembly consists of a glass screw cap and a cylindrical wooden booster holder, the top of which has a deep threaded recess to take the Topf Mine Igniter. A subsidiary igniter socket in the glass cap leads to the booster charge, and is threaded to take a standard igniter.

The Topf Mine Igniter, which is made of glass, has no safety device. It comprises a cylindrical glass body 3 mm thick; a solid glass pressure head, hemispherical in shape and two small glass ampules, one of which contains sodium and potassium as a liquid alloy and the other ethyl nitrate. The ampules are held in position by a black celluloid disc. A thin bakelite detonator well is provided.

The mine is activated by a pressure of at least 330 pounds, which forces the pressure plate down onto the igniter head and thereby breaking the two glass ampules. A flash results, setting off the detonator, booster, and main charge. If a standard igniter is used, the mine must be laid upside down.

SPECIFICATIONS

Diameter of mine        12 1/2 ins.
Height of mine 5 1/2 ins.
Weight (complete) 20 lbs.
Weight in crate 29 lbs.
Filling TNT
Weight of filling 12 1/2 lbs.
Firing pressure 330 lbs.
Height of igniter (including cap) 3 1/2 ins.
Diameter of igniter body 1 1/2 ins.
Shear pressure of igniter 132 lbs.
Overall height of primer plug assembly 3.1 ins.
Diameter of primer holder 2 1/2 ins.
Diameter of glass cap 4.6 ins.

German: p. 304.9 (May 1, 1945)

Riegel Mine 43 (R.-Mi. 43), Sprengriegel 43 (Spr. R. 43): Antitank Mine

Riegel Mine 43 (R.-Mi. 43), Sprengriegel 43 (Spr. R. 43): Antitank Mine

The Sprengriegel 43 or “high-explosive bar mine” is used in open country, on roads, and in minefields. It consists of three main parts: a metal encased charge of TNT, a sheet steel tray, and a lid which acts as a pressure plate on the charge.

The charge is provided with five igniter sockets: two for the main igniters (Type Z. Z. 42) are located in the ends of the charge and are recessed so that only the ends of the igniters show when they are fitted and laid; the other three are for the new tilt igniter 43 (Ki. Z. 43) or other antilifting or trip-wire igniters. One of the latter three sockets is located in the top center of the charge; the other two are in one side five inches from the ends. By reversing one of the main igniters with its wings below the end pressure plate, it will function as an antilifting device. The mine may also be fired electrically by remote control.

The tray is equipped with shear wires which are threaded through reinforcing strips welded to the inner sides of the tray. The ends of the tray are folded over on top to form slotted pressure plates to actuate the Z. Z. 42 igniters fitted to each end of the charge. Near each end are holes through which safety bars are threaded to keep the charge clear of the shear wires in the unarmed position. A thin red line painted along the sides of the tray one-half inch from the bottom indicates the correct position of the lid when the mine is armed.

The lid of spot welded sheet steel construction is equipped with a handle at one end. It, too, is fitted with holes to correspond with the sockets, shear wires, and safety bars.

A pressure of about 440 pounds at either end, or 880 pounds in the center of the mine forces the lid and charge down, shearing the wires and actuating the igniters which set off the main charge.

SPECIFICATIONS

Overall length        31 1/2 ins.
Overall width 3 3/4 ins.
Height (laid) 3 1/2 ins.
Total weight (approx.) 20.5 lb.
Color Light khaki
Thickness of casing (approx.) .04 in.
Weight of charge 8.8 lb.
Main igniters Type Z. Z. 42
Firing pressure (ends) 440 lb.
Firing pressure (center) 880 lb.

German: p. 304.2

Anti-Vehicular Yardstick Mine

Japanese WWII Anti-Vehicular Yardstick Mine

This Japanese land mine, of Naval origin, is usually found buried in landing strips. Almost any vehicle will activate the mine, but its use as an anti-personnel device is limited since a pressure of approximately 336 pounds is necessary to set it off.

The mine consists of an oval shaped tube of sheet metal with a cap on both ends; an explosive charge comprising eight blocks of picric acid, each cast in a paper container and coated with paraffin; and four percussion type fuzes.

The picric acid blocks which are flattened on one side do not fill the mine completely. The space between the flat side of the blocks and the wall of the case accommodates the protruding heads of the fuzes which are inserted between blocks.

The percussion type fuze consists of a cylindrical body which houses the striker release plunger, a booster housing, and a striker housing. The two latter parts are identical in external appearance and screw into the sides of the main body diametrically opposite each other.

The striker release plunger, a split pin with an enlarged flat head, is positioned in the fuze body by a copper shear wire. A second hole 90 degrees from the shear wire hole accommodates a safety wire. The lower end of the plunger is split by a slot, the width of which is increased on the inner end.

The mine is held in an unarmed position by the safety wire which is inserted through a hole in one of the end caps, and extends the entire length of the mine. A spring clip on the cap holds the wire in place. When the mine is to be put into operation, the safety wire is removed and a burying plug is screwed into the hole in the cap to make the assembly waterproof. A thick tarry substance is applied to-the seams around the end caps probably for the same purpose.

SPECIFICATIONS

Length (overall)        36 ins.
Diameter (oval) 3.35 x 1.8 ins.
Total weight 10.58 lbs.
Weight of mine 4.63 lbs.
Weight of filling 5.95 lbs.
Weight of each explosive block 3/4 lb.
Filling Picric acid
Weight of complete fuze .29 lb.
Color Brown outside; black lacquer inside

Japanese: p. 308.1 (March 1, 1945)