摘要:
Ammunition comprising a lead bullet having a coating comprised of polymeric material, e.g. a polyamide which may include a solid lubricant such as molybdenum disulfide Nylon 11 per se and other coatings are disclosed. The coating minimizes or prevents deposition of lead along the barrel and other mechanisms of a firearm. In the preferred method of manufacture, the bullet is degreased, roughened and heated to clean its surfaces. A phosphate coating is applied and the bullet is heated to a temperature of at least 425°F. The heated bullet is then disposed in blended molybdenum disulfide and Nylon 11 powder, Nylon 11 per se, or other coating materials to obtain a coating thickness within a range of 1 to 12 mils. The coated bullet is subsequently heated to at least 367°F to fuse and to densify the coating on the bullet.
摘要:
The invention relates to apparatus for providing ink feed to a printing press. An inking-unit attachment for a printing press includes a fountain roller (30), a ductor roller (32) for rocking movement between the fountain roller (30) and a receiver roller (34) an idler roller (28) in the nip between the receiver roller (34) and an oscillator roller (26), and a pair of form rollers (22) for transferring ink from the oscillator roller (26) to the plate cylinder (20) of the printing press. The receiver (34) and oscillator rollers (26) rotate at different peripheral speeds to provide a skidding action between one or both of such rollers and the idler roller (28) to provide an even distribution and an increased quantity of ink to the oscillator roller. A three-function cam serves to reciprocate the oscillator roller (26) in an axial direction, rock the ductor roller (32) between positions in engagement with the fountain (30) and receiver (34) rollers respectively, and intermittently to drive the fountain roller (301. The form rollers (22) are movable between a position in the nip between the oscillator roller (26) and plate cylinder (201, a position spaced from the plate cylinder (20) and engaged with the oscillator roller (26), and a lift position spaced from both the plate cylinder and oscillator roller. The inking-unit attachment (18) is adapted to be releasably hung on the frame of the printing press (10) and to be driven from the plate-cylinder gear on the printing press through a shaft affixed to the plate-cylinder frame, where the shaft has an overload clutch to guard personnel from injury and the unit from damage