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United States rifles and machine guns; a detailed account of the methods used in manufacturing the Springfield, 1903 model service rifle also. Enfield rifle and three types of machine guns

Price: $14.78
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(as of 26/08/2016 08:08 PDT) - Details
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Product Details

PRODUCT#: 830140866

Product Description

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: .and K leather; heated to 750 deg. C. (1,382 deg. F.) for 2% hr.; quenched in water. Apparatus and Equipment Used-Same equipment as previously described. OPERATION 19. POLISHING "ON" SIDE OF THUMB-PIECE Number of Operators-One. Description of Operation-Polishing side of thumb-piece stamped On." Apparatus and Equipment Used-Polishing jack and wheel. Production-350 pieces per hr. OPERATION 20. ASSEMBLING WITH SCREW, SPRING PLUNGER AND SPINDLE Number of Operators-One. Description of Operation-Assembling plunger and spring. Apparatus and Equipment Used-Pinchers and hands. Production-150 pieces per hr. OPERATIONS ON CUTOFF SPINDLE Operation 1 Automatic 2 Polishing OPERATION 1. AUTOMATIC Transformation-See Fig. 1404. Machine Used-Acme automatic No. 615; tool layout, Fig. 1404. Number of Machines per Operator-Four. Work-Holding Devices-Held in draw-in chuck. Tool-Holding Devices-In turret. Cutting Tools-Tools for automatic, Fig. 1404; forming and cutting-off tools; also, shaving or turning tool. Number of Cuts-Four. Cut Data-1,200 r.p.m.; A-in. feed. Coolant-Cutting oil, %-in. stream. Average Life of Tool Between Grindings-1,200 pieces. Gages-For diameter; length; groove at one end, and groove at other end. Production-140 pieces per hr. OPERATION 2. POLISHING Number of Operators-One. Description of Operation-Polishing rear end. Apparatus and Equipment Used-Polishing Jack and wheel. Production-1,430 pieces per hr. Note-Polish round end. The Follower The follower, shown in detail in Fig. 1405, has a rib A that serves to locate the cartridge in the magazine and guides the last cartridge into the chamber above. The front stop B is for the magazine spring, as is the rear stop C. The lugs D are the undercuts that hold the small en.. Price: $14.78

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