From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification sheet for a rifling machine from Builders Iron Foundry.
| Identifier | ExFiles\Box 176\3\ img171 | |
| Date | 12th November 1940 guessed | |
| SPECIFICATIONS RANGE Rifling capacity length - 40" Diameter of hole through Chuck - 2" Swing over bed - 9" diameter Number of Grooves - 2 to 8 Shortest lead - 1 turn in 6" Longest lead - 1 turn in 20" SPEEDS (Designed for Hook Cutter) Forward not cutting - 30-2/3 f/m Return cutting - 23-1/3 f/m Dia. Driving Pulley - 9" c 1 1/4" FLOOR SPACE 12'10-5/8" x 4'0 1/2" PUMP B & S Gear Pump with Integral Motor MOTOR (Recommended) One 5 HP, 1200 RPM STANDARD EQUIPMENT The Builders Rifler arranged for motor drive with motor base, belts, pulleys, pump and integral pump motor, conduit and wiring. DIMENSIONS AND WEIGHTS (Export Boxing) Dimensions - 160" x 56" x 60" Net Weight - 3,700 pounds Gross Weight - 5,200 pounds Tare Weight - 1,500 pounds BUILDERS IRON FOUNDRY, PROVIDENCE, R.{Sir Henry Royce} I. PRINTED IN U. S. A.{Mr Adams} | ||