Patent GB-190106852-A (GB)
Title: Improvements in Motor-driven Vehicles for Common Roads.
Inventor: SANGSTER CHARLES THOMAS BROCK
Filed: 1901-04-02
Granted: 1902-06-02
Abstract: 6852. Sangster, C. T. B. April 2. Motor road vehicles.- The general object is to simplify the construction and arrangement so as to make all parts accessible for inspection and repair, while they are thoroughly protected from dust and mud, and to facilitate erection and adjustment. The improvements also relate to a water-cooled twin-cylinder motor ; to the change-speed and reversing gear, and to means for preventing unintentional reversal ; and to means for adjusting the balance gear-box laterally relatively to the driving- pinion. 2<A> shows in plan a portion of the fore-part of the vehicle with the carriage body and motor bonnet removed. The framing consists of two sets of longitudinal tubes, a<2>, a<3>, and a<9>, a<10> and a number of transverse tubes all connected by clips and sockets. The motor e is supported on the inner tubes with its crank shaft disposed longitudinally. The engine drives the changespeed gearing contained in the casing g<3> through the medium of a spring- engaged friction cone clutch carried on the shaft of the change gear. The clutch is connected with the engine shaft by a fork f<1> engaging loosely with lugs f<5> whereby a direct thrust is avoided and either the crank shaft or the clutch and speed gear can be removed without disturbing the other. The changespeed and reversing gear is shown in plan in Fig. 7. The clutch f is mounted on one end of the shaft f<7> on which are screwed four pinions with suitable intervening distancepieces or prolonged bosses, all being secured by a locknut h<7>. On a second shaft h<11>, situated at a slightly higher level, is feathered a sliding sleeve h<12>, on which three toothed wheels are similarly mounted. The sleeve may be slid into different positions to put the several pairs of wheels in or out of gear by a forked arm h<21> carried by a sliding rod h<22>. The shaft h<11> is furnished with a brake drum j<2>, and drives an inclined transmission shaft i, which extends to the balance gear at the rear of the vehicle, and is furnished with universal couplings j at each end. The gear casing is divided into a lower section g<1> and an upper section g<3> along a line passing through the bearings of the shafts, so that they can be removed without disturbing other parts. Fig. 9 shows the balance gear and rear axle casing in section. The balance gear by which the two parts c<8>, c<9> of the rear axle are driven is of an ordinary kind, but the gear-box, which carries the driving- wheel k is composed of two parts i<16>, i<17>, so mounted that the wheel k can be adjusted laterally in relation to the pinion i<3>. This pinion is driven by the transmission shaft i, and is mounted in a bearing-piece i<6>, one-half of which can be removed for enabling the gear to be inspected. The lateral adjustment is provided for by making the bushes i<39>, i<30>, in which the ball races for the bearings 1, 2, 3, 4 are formed, capable of being screwed in or out of their sockets in the casing m<1> as required, similar means of adjustment being provided at the bearings at the outer ends of the axle. The means for setting the speed-controlling hand-lever and preventing accidental reversal are shown in Fig. 10. The hand-lever u works between sectorshaped guides attached to the steering-post t<3>, and is held by being pressed laterally by a spring so that a ridge on it engages with one or other of a series of notches in one of the sectors. A lateral move - ment releases the lever, and it can then be set for any speed, but cannot be reversed. To bring the lever into the position for reversal, it is necessary to raise a spring stop u<21> so that it may pass over the block u<24>. The lever through which the handlever u acts on the sliding rod h<22> for adjusting the change-gear, and the several pedal levers are all mounted on the same shaft p as shown in Fig. 2<A>. These pedal levers comprise one q for controlling the back axle brakes, a lever r for releasing the clutch f, and a lever s for simultaneously acting on the clutch pedal r and applying the countershaft brake j<4>.