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 for new type G.E. Electric Brake Testers, types E - H.
| Identifier | ExFiles\Box 155\3\ scan0036 | |
| Date | 1st October 1935 | |
| SPECIFICATION OF NEW TYPE G.E. ELECTRIC BRAKE TESTERS. TYPES E - H.{Arthur M. Hanbury - Head Complaints} MOTORS. - 4 - 1/2 h.p. Continuous Rated Motors, one for each Unit are fitted. These are controlled in pairs by Press Button Switches with thermal overload and no volt release. DRIVE. - The drive from the motors to the rollers is taken through standard Industrial Type Coventry Chain Drive and Heliocentric Gear giving a highly efficient and practically silent drive. INDICATION. - The indication of the brake load is given by pressure gauges and a completely enclosed hydraulic system. There are no cup leathers or packing glands to cause leakage or produce irregular frictional losses. The gauges are provided with a set-back zero and adjustment is provided on the front of the pedestal to bring all gauges to a correct zero instantaneously thereby allowing adjustment for expansion or contraction of the fluid. The gauges are calibrated with a wide open scale to read from 100 - 1600 pounds road pull. The indicators are fitted with oil damping devices. All general dimensions as to width of rollers, etc. etc. are practic-ally the same as B type contained in List No. 404A. TYPES. The new Brake Testers are made in two types :- 1. Flush Model 2. Ramp Model The former, namely the Flush Model needs an excavation and the side ramps as illustrated in our literature are absolutely flush with the ground when installed. The ramp model requires no excavation whatever, and the machine is fitted with approach ramps. In the case of the two wheel ramp model, ramps are fitted both in front and behind the machine. Where machines are fitted over a pit supports for jacks can be supplied at an extra cost. The two wheel models whether ramp or flush type do not require an anchor and chain but are supplied with wooden blocks to put behind the wheels not being tested and which keeps the vehicle perfectly rigid. JOSEPH BRADBURY & SONS LTD. BRAINTREE, ESSEX. Oct. 1935. List 6/1 | ||