Congressional Edition Volume 7329

Congressional Edition Volume 7329

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 edition. Excerpt: ... the position shown in Fig. 3 this face will fit squarely against the vertical face ft, and also against the butt-end of the cartridge-shell. A sufficient space is left between the rear surface of the block g and front surface of the breech-block B to allow this block a rocking movement, so that when the front end of block B is depressed to expose the breech of the barrel A', the block g will move perpendicularly downward for a short distance, and then swung in the arc of a circle with the breech-block B. In ascending to its former position block g makes the same movement as described. The distance from the axis of motion of the breech-piece 15 to the center of the front end of the rocking block g should be equal to the distance from said axis to a point touching the center at the butt of the cartridge-shell when the latter is in place, as shown in Fig. 3. This renders it necessary to leave such a space between the blocks B and g as will allow the upper end of the latter to recede as it descends. The position of the breech-block B, when latched down by the latch O, as shown in Fig. 3, is such that the recoil of he discharge is received directly upon the solid abutment c. The upper surface of the breech-block and. rocking block Is grooved longitudinally, so as to allow space In rear of the barrel, when the block B is depressed, for the backward escape of rlie cartridge-shell and also for the insertion of a ball-cartridge. On one side of the breech-piece B an inclined groove is formed, in which Is inserted a firing-pin; ', upon the upper end of which the hammer strikes. The lower end of this pin; abuts'against a wedge-shaped pin, A.-, which is fitted Into a recess formed in the rocking block g, as shown in Fig. 6. Pin k is allowed to have more

Product details

  • Paperback | 328 pages
  • 189 x 246 x 18mm | 585g
  • United States
  • English
  • black & white illustrations
  • 1236879295
  • 9781236879295