In the early 1930s the German weapons Concern «Rheinmetall-Borsig AG» was developed heavy, semi-automatic, magazine-anti-tank gun that could exploit 20x105 mm cartridge. However, like many other German weapons development it did not appear under the symbol «Rheinmetall». The Treaty of Versailles did not allow the company Rheinmetall produce novelty under its own brand. Even her development is a violation of the restrictions imposed on Germany. In order to conceal such works Germans used their branch in Switzerland «Waffenfabrik Soloturn AG» (1929 Soloturn firm began to belong to the German company Rheinmetall).
New weapons made in Germany, began to produce under the brand name Swiss designation «Soloturn S 18-100». These SSS had limited commercial success. Small quantities of them purchased the armed forces of Germany, Hungary and Finland.
In the mid-1930s engineers «Waffenfabrik Soloturn AG» decided to increase the effectiveness of this weapon. Anti-tank gun model S18-100 redesigned for a more powerful caliber ammunition 20x138 mm, which led to an increase in muzzle velocity and armor penetration. New MFR received the designation «Solothurn S18-1000».
antitank rifle Solothurn S18-1000 is generally repeated design Solothurn S18-100. However, the weapon modification was made to a number of structural changes. In the process of modernization of the weight and length of the new model were increased MFR. To compensate for a more powerful recoil muzzle brake slotted type active-reactive action and changed the shoulder rest-absorber. Improvement were loading mechanism and a trigger mechanism. Changes affected the sights.
PTR Solothurn S18-1000 used-automatic moving barrel with a short course of rollback. Locking barrel (barrel grip with shutter) was performed using the rotary coupling assembly in the breech. On the inner surface of the box are made grooves mating with lugs shutter. Rollback barrel shaped grooves in the receiver cranked this clutch disengaging it from the gate. Shots were fired from a closed bolt.
| Caliber, mm || 20h138 |
| Length mm || 2170 |
| Barrel length, mm || 1447 |
| Weight empty, kg || 51.7 |
| store count. cartridges || 5, 10 |
| Rate of fire / min || 15-20 |
| Sighting range, m || 1500 |
| Muzzle velocity, m / s || 850-900 |
| Penetration, |
(Distance / angle of incidence / piercing)
| 100 m / 90o / 40 mm |
300 m / 90o / 35 mm
Weapons Platoon by rotating the knob to the right to housing. After three and a half shutter speed was transferred to the rear position.
trigger mechanism allows keeping only a single lamp. Practical rate was 15-20 rounds per minute.
Food arms ammunition made from detachable box magazines, merged horizontally left. Used magazines for 5 and 10 cartridges.
Sights consist of both mechanical adjustable open sights sector type and folding front sight and optical sight 2.5-multiplicity.
trunk equipped with a muzzle brake reactive type. In the barrel rifling performed eight right-handed.
weapons are placed on the bipod. For additional support and fixing weapons in position under the shoulder rest was mounted flap opener, with adjustable height.
Strong recoil partially offset muzzle brake, bipod assembly and buffer-absorber shoulder emphasis.
In battle rifle was transferred to the hands of the calculation, and for long-distance transportation used a special two-wheeled trolley.
(On a two-wheeled cart)
widely exported to other countries (Finland, Hungary, Italy, Netherlands, Sweden, Bulgaria, Romania), where he was received by armed voltage. The Germans had also planned to adopt MFR Soloturn, however, arose between «Waffenfabrik Soloturn AG» and concern «Rheinmetall-Borsig AG» friction was not allowed to learn at last production PTR. The German army had to purchase PTR Soloturn S 18-1000 directly from the company Soloturn. In the Wehrmacht, they were designated PzB.41 (s).
At the end of the 1930s on the basis of Soloturn S18-1000 created the "universal tool» Solothurn S18-1100 is also designed to use the cartridge 20x138 mm. Model S18-1100 was almost identical to the S18-1000 and mainly differed opportunity to fire bursts, and in this version is suitable for use as an anti-aircraft gun (with special machines).
PTR Solothurn S18-1100 consisted in service in Switzerland, Germany and Italy. In Wehrmacht designation it had PzB.785.
antitank guns Soloturn S18-1000 was characterized by awkwardness and strong recoil. If the second half of the 1930s, this weapon is quite consistent with the requirements of confrontation with the tanks of the time, then by the early 1940s, his fighting qualities were in doubt. First used by Germany on the Eastern Front PTR PzB.41 (s) have proven low-power weapon against Soviet T-34 tanks, and not only when shooting in the forehead, but in the board. These results from this seemingly one of the most powerful infantry anti-tank defense funds urgently forced the Wehrmacht to withdraw troops from the Swiss weapons and transfer them to equip African body and use against lightly armored vehicles Anglo-American troops. With respect to gun Solothurn S18-1100 in the literature indicates that it was poorly adapted for conducting automatic fire, was available strong recoil and low accuracy, complex service and deafening sound when fired. However, thanks to a wide range of ammunition types (besides armor were high-explosive, incendiary, etc.) Solothurn antitank rifles could be used as a weapon close infantry support.
exact number of guns unknown. But since it consisted in the armies of several countries, the volume of production could be significant. Model Soloturn S18-1000 was the most massive and brought the greatest profit concern «Waffenfabrik Soloturn AG». Switzerland itself has purchased and put into service a small number of these weapons.