Abstract: A continuous firing structure is provided for color bullet of a cap gun. The cap gun has a main body with a machine unit. The continuous firing structure mainly comprises a bullet barrel at one end of the main body and a through hole between the bullet barrel and the unit for the operation of a pushing cylinder and a discharge pin. The pushing cylinder and the discharge pin are used with a spring for continuous firing.

Abstract: A truing operation for straightening out of true work pieces such as crankshafts, must not again reduce the fatigue strength of the work piece achieved in a previous strengthening operation. This is achieved by a truing operation, wherein locally bounded compressive residual stresses are induced in a surface layer zone of the work piece by a hardening operation, whereby the respective out of true deformation of the work piece is at least reduced. The truing operation is repeated until the out of true deformation is eliminated. The compressive residual stresses are induced in a surface layer zone of the work piece by a locally limited hardening operation, e.g. a surface strengthening rolling operation. By appropriately varying the extent of hardening or the rolling force respectively, any out of true deformation may be even completely eliminated. A machine for performing the method is also disclosed.

Abstract: A deforming tool having two members of which one is made as a cylindrical roll, whereas the working surface of the other member is made curvilinear. A rod of microwire is fed into a gap between their working surfaces. A rotation drive and a drive for a reciprocating movement are mechanically coupled with the cylindrical roll.

Abstract: The invention relates to the rolling and drawing of metals. The microwire manufacturing method according to the invention is characterized in that a microwire blank (1) is rolled during the drawing process in opposite directions relative to the drawing axis (B--B). The blank (1) is rolled over the same distance equal to at least one half of its circumference. The method is carried out with the aid of a device comprising a body (3), a die (4) and a mechanism for drawing wire through the die (4). The die (4) is composed of two parts (5 and 6) which interact with the blank (1) as the latter is drawn between them. Each of the die parts (5 and 6) has a working surface (8). According to the invention, the parts (5 and 6) of the die (4) are secured in the body (3) so that they can be set in synchronized reciprocating motion in parallel planes. The working surfaces (8) of both parts ( 5 and 6) of the die (4) are flat and parallel with each other and the drawing axis (B--B).

Abstract: A centerless gear forming tool for cold rolling teeth on a gear blank in which the blank is inserted between a pair of gear forming rolls which are movable toward and away from each other. The rolls are urged toward each other by a spring, clamping the blank between them and are caused to rotate synchronously in the same direction. The gear rollers have lugs forming opposing surfaces which engage the blank when the gear rolls are rotated to an initial position. A latch initially holds the rolls apart so that the blank can be inserted between the rolls and clamped in position by rotating the opposing lugs into engagement with the blank. The latch is then released causing the blank to be also clamped between the rolls. Subsequent rotation of the rolls in the direction to move the lugs away from the blank operates to cold form the teeth in the blank under the pressure of the spring.