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).
Brochure for Weaver's Automatic Brake Tester and Combination Brake and Alignment Tester equipment.
| Identifier | ExFiles\Box 120\2\ scan0113 | |
| Date | 1st August 1936 | |
| SAFETY LANE 954 WEAVER Automatic Brake Tester A Dynamic Test is a Real Road Test A car in motion has momentum, which must be arrested by the brakes through foot pressure on the brake pedal. No test of brakes with the car stationary, or with artificial (pedal jack) pressure on the brake pedal can show how brakes perform on the road. In a true road stop, weight is transferred from rear to front wheels, giving front brakes more work to do. “Dipping” of the radiator compresses front springs, affecting the linkage and hence the brake action. Further, the driver’s foot and leg accommodates itself to a certain amount of the pedal wavering, as a pedal jack cannot. Thus the Dynamic Test of the Weaver Brake Tester eliminates the artificial elements characteristic of other types of equipment, and gives a true picture of how brakes react in actual driving. Cut CY-22—Jack-knifing, the dread of every driver of a tractor-trailer, is usually due to delayed rear brakes. With good front brakes and slow rear brakes, in 2 seconds the tractor will be trying to hold to 22 miles an hour while the heavy load still forges ahead at 40-mile speed. Ask any driver how often he has jack-knifed just this way. Tester, brakes will fail to register if delayed more than 1/3 second. This is the only Tester on the market that will discover these dangerous delayed brakes. Cut CY-23—First stop on the Brake Tester with a semi-trailer, showing condition of front tractor brakes. Brake Timing No less important, particularly in the adjusting of trailer brakes, is a test to determine how quickly those brakes are applied after the brake pedal is depressed. Many semi-trailers have been found with rear brakes delayed from 3 to 5 seconds. Even ½ second delay is dangerous, and in the case of an emergency stop may be sufficient to cause jack-knifing. Stopping from 10 miles an hour on the Weaver Brake Tester, brakes will fail to register if delayed more than 1/3 second. On passenger cars and light trucks a brake may be delayed by a kinked or partially plugged hydraulic tube, or accumulated dirt or rust in the linkage, causing side pull and skidding, both of which are dangerous. Cut CY-24—Second stop, bringing entire trailer load onto the Tester. Shows timing of rear brakes as well as transfer of weight of the trailer load. -26- WEAVER MANUFACTURING CO., Springfield, Ill., U. S. A.{Mr Adams} WEAVER INDUSTRIES, LTD., Chatham, Ontario, Canada Form P-452—5M—8-36 Printed in U. S. A.{Mr Adams} WEAVER 955 SAFETY LANE Combination BRAKE AND ALIGNMENT Tester Show Your Customers Actual Road Conditions of Brakes and Steering Easy to see and understand—reads like a thermometer. It isn’t what you see, but what your customer can see that brings you the repair order. That’s why Weaver Safety Lane Equipment is superior to any other on the market. It shows your customer what he needs—shows it so he can see and understand. It gives him confidence that the things you tell him are true, because he can see for himself that they are so. It reduces sales effort to a minimum, facilitates the actual shop work, and then when a job is done it proves to your customer that the corrections you have made are accurate. Statistics show that 30% of all the money spent for automotive maintenance (exclusive of gas, oil and tires) goes for brake service and wheel alignment. This one machine opens your shop to 30% of all service work, and helps you sell it. Cut JY-8 This Combination Brake and Alignment Tester and a Weaver Headlight Tester constitute a complete SAFETY LANE for your shop. -31- | ||