Abstract: An adaptation cartridge comprises a firing pin casing which is screwed into a cartridge chamber or cartridge chamber tube and is secured against rotation by a radially displaceable slide. The cartridge is used for training on a gun having a subcaliber barrel adapter.

Abstract: A face turning head for machining stations, comprises a drive mechanism for displacing the tool slide transversely. A drive shaft drives a worm gear or its equivalent through a transmission element, such as a cog belt transmission to axially displace a setting rod. This axial movement of the setting rod, which is independent of the rotation of the turning head but can be effected simultaneously therewith, actuates a gib key drive by which a tool slide is displaced transversely to the turning head axis. Through reversing rollers and displaceable blocks, the centrifugal disequilibrium caused by the tool slide movement is compensated for.

Abstract: A measuring process for evaluation of the machining capability or quality of multi-spindle rotary machining or turning unit utilized for the production of preferably rotationally-symmetrical workpieces which are to be finished on both sides, and for the intermediate and/or final evaluation of workpieces which are finished in that manner. Furthermore, the invention also relates to a measuring installation for the implementation of this measuring process.

Abstract: In a sensor head of a measuring machine, for at least one coordinate, a straight line guiding mechanism is provided between two base parts. Springs acting in this coordinate bring the two base parts into abutment. To achieve a slackfree, stable position of rest, a stop element with a stop face for each base part is displaceable in both directions of the coordinate, counter to the action of a spring. Both stop faces point in the same direction of the coordinate. For movement, stroke lengths are free on both sides.

Abstract: In a multi-coordinate measuring machine, a contact pin is movable relative to an upper part of a measuring head, in the X, Y and Z directions. The contact pin must be mounted so as to be displaceable from its zero position, and blockable in position in each of these directions. To simplify the construction, the mechanism for displacing and blocking the movements of the pin are combined in the form of an electrodynamic transducer for each of the three directions. The transducer is formed of a pair of aligned coils which are each associated with a permanent magnet.

Abstract: A two-barrel revolver-type firearm comprising two fixed barrels to be fired alternately, which are equipped with igniting systems and drives of their own, independent of each other. A drum with an odd number of chambers alternately aligns a chamber with each barrel for alternate firing of cartridges through the two barrels.

Abstract: A projectile particularly for use in rapid fire weapons and high performance guns comprises a hollow projectile body having an exterior surface with an annular groove therearound and with a plurality of openings formed in the groove at spaced circumferential locations. A rotating band is positioned in the groove and secured against displacement caused by centrifugal and accelerating forces, portions of the band which extend through the openings. The band is advantageously injection molded directly in the groove so that portions thereof form into the openings and extend through the openings and form a closed ring on the interior of the shell of the projectile body.

Abstract: A projectile comprises a tubular body and a sabot or impact base connected to the rear portion. The tubular body is connected to the sabot by radially extending pins, and the rear face of the body is spaced from a circular shoulder of the sabot by a distance equal to, or larger than, the diameter of the pins. To ensure a transfer of the spin of the sabot to the body, the rear face of the body is provided with a corrugation, such as teeth, or a knurling, which, at the discharge and after the pins are sheared off, digs into the surface of the circular shoulder.

Abstract: A dynamic feeler head comprising a central feeler pin and suitable particularly for being used in machine tools and measuring units in workshops, has definite tilting axes in the coordinate directions x and y and is subject to definite tilting forces, and ensures well reproducible measuring movements. The feeler pin 2 is tiltable in the coordinate directions x or y about axes, which extend in a common horizontal plane and are spaced from the pin always by the same distance. The tilting axes are embodied by hinges made of leaf springs, by which five plates extending one above the other are connected to each at their side edges.

Abstract: A rotating band of projectiles is made of a compound sleeve bearing material. The compound material comprises a carrier material and a porous slide layer applied thereto and having pores filled with a polytetrafluoroethylene mixture. The outer surface of the slide layer is coated with a cover layer of a polytetrafluoroethylene mixture. The rotating band is held in place in the groove by a latching connection.

Abstract: A measuring head for screw thread measuring machines which is capable of measuring threads of a piece to be measured which has an outer diameter with a measuring point and which may be of varied diameters within predetermined limits comprises a base plate which has a thruhole in its center, a plurality of straight support grooves. Feelers are arranged at spaced angular locations around the periphery of the hole and a centering disc is located within the hole as well as measuring elements which are similarly offset and clamping elements which are arranged at selected angular locations to engage the centering disc. The feelers and the measuring elements are carried in a measuring station which is movable along a groove which extends parallel to a straight line which intersects a measuring point on the diameter of the piece to be measured and the lowermost point of the piece at the location in which it intersects the vertical axis.

Abstract: A projectile particularly for automatic firearms in high performance machine guns comprises a cylindrical projectile body which has an annular groove around its circumference with rib portions extending radially outwardly of the bottom of the groove which are of radial extent no greater than the outer surface of the projectile body. The groove has end walls which are substantially perpendicular to the exterior surface of the body. A plastic rotating band has its inner periphery anchored in the groove with the rib portions extending to receiving recesses or grooves of the band. The ribs are advantageously radially extending elements which have their outer ends bent in axial directions and they are arranged so that there are portions of the groove of the body on each side thereof. In accordance with the method of manufacturing a projectile body, a form tool is used to effect the recessing of the projectile body or jacket to produce the intermediate ribs which are of substantially rectangular cross section.

Abstract: A projectile particularly for automatic firearms in high performance machine guns comprises a cylindrical projectile body which has an annular groove around its circumference with rib portions extending radially outwardly of the bottom of the groove which are of radial extent no greater than the outer surface of the projectile body. The groove has end walls which are substantially perpendicular to the exterior surface of the body. A plastic rotating band has its inner periphery anchored in the groove with the rib portions extending to receiving recesses or grooves of the band. The ribs are advantageously radially extending elements which have their outer ends bent in axial directions and they are arranged so that there are portions of the groove of the body on each side thereof. In accordance with the method of manufacturing a projectile body, a form tool is used to effect the recessing of the projectile body or jacket to produce the intermediate ribs which are of substantially rectangular cross section.

Abstract: A firearm, particularly a sporting gun, having a rotatable bolt with a locking head and being equipped with a trigger mechanism accommodated in a trigger housing is disclosed. An angled reset member is engaged by the rotatable bolt through a pressure pin, in order to transform the rotary motion into a linear motion. For this purpose, the pressure pin is connected to the reset member, cooperates with a locking projection of the bolt. Upon turning the bolt, the reset member is caused to butt against a contact surface of the pivotally mounted first trigger which is connected to a pivotally mounted hair trigger. The hair trigger is thus pivotable to a safety position.

Abstract: A coordinate measuring apparatus comprises a frame substantially formed by a rectangular prismatic body and an indexing rotary table which is connected to the front side portion of the prismatic body to form an L-shaped structure. Above the prismatic body, a cantilever arm projects over the rotary table. The cantilever arm is movable at its level, perpendicularly to its longitudinal axis and carries a tail spindle which is equipped with a measuring head. The clear construction of the apparatus which is easy to survey and with its overhead guideways, is an ideal arrangement for applying a linear measuring system.

Abstract: A spindle drive for measuring devices comprises a threaded spindle with a nut threadably engaged on the spindle and with one of them being rotatable to cause displacement relative to the other along a longitudinal direction in relation to the spindle. A nut carries a slide portion with vertically extending posed blind bores carrying bushings with ball races therein. A measuring carriage is affixed and forms part of a support portion which extends over the slide and the measuring carriage portion extend below the slide. A drive pin is carried by the support portion and the measuring portion and it is confined for movement within the respective bushings. A screw bolt is connected between the support portion and the slide and it may be threadably adjusted to permit vertical adjustable positioning of the slide relative to the measuring carriage and the support portion.

Abstract: In a sabot projectile, a projectile core is held fast in a sabot. To the outside of the sabot a hood engaging over the projectile core is secured. To obtain a tight seal of the hood on the sabot by simple measures, particularly without a thread, the shell of the hood is designed with a sealing rim applying against a smooth annular zone of the sabot. Webs of the hood extend beyond the sealing rim. On their free ends, they are provided with inwardly projecting snap noses which engage a recess of the sabot.

Abstract: A measuring head for measuring article contour positions comprises a casing with a feeler pin mounted in the casing for pivotal movement in three-dimensional directions. A separate spring biases the feeler element in a neutral position in each of the three dimensional movement directions and the feeler pin is movable against the bias in all directions in a measuring movement. The measuring head is provided for measuring equipment for multi-coordinate measuring instruments and machine tools and is provided with connections for a digital or an analog evaluation of the measured value. Preferably a plurality or rope elements are connected to the feeler pin to hold it in its coordinate zero position within the casing and to extend in the respective X, Y and Z directions and are in equilibrium with each other in their state of rest.

Abstract: The coordinate measuring machine comprises a basic frame structure including a bearing portion having a steel track with a crossbeam support for traveling on the steel track which carries a spindle sleeve. At least one of the frame structure parts comprises a cast resin concrete with a steel track embedded in the cast part. The composition of the synthetic resin concrete at least in the zones adjacent the steel track is such that the coefficient of thermal expansion of the concrete is substantially equal to that of the steel track.

Abstract: A device for measuring the position of a member for example, the height thereof comprises a frame with a slide movable on said frame which carries a rigid measuring member. A motor is connected to drive the slide through a constant slip torque clutch connected between the motor and the slide. The clutch is a magnetic field clutch so that it urges the measuring member when it is in a measuring position against the object being measured so as to exert the measuring force thereon.