Patent GB-189904717-A (GB)
Title: Improvements in Vehicle Motors, and Gearing therefor.
Inventor: EISENHUTH JOHN WASHINGTON
Filed: 1899-03-03
Granted: 1899-08-12
Abstract: 4717. Eisenhuth, J. W. March 3. Motor road vehicles.-Relates to a motor and to gearing for propelling motor carriages, cycles, or light wagons. (1) Fig. 1 shows in elevation, and Fig. 5 in plan, the preferred form of carriage. In this the frame B is of tubular construction, and rests upon springs supported on roller-bearing axle-boxes ; it is also arched above the rear wheels. There may either be two seats fronting backwards and forwards respectively, with a central back c', as in Fig. 1, or four circular seats C, as in Fig. 5. In the latter case the seat frames are made adjustable in position on the cross bearing-bars. Two steering-wheels E are provided, the fork head being chain-geared to the spindle of the steering- handle. (2) The motor is a double-acting, oscillating, two-stroke cycle, reversible gas engine, capable of being worked wholly or in part by heated compressed air. It is shown in side elevation in Fig. 3, and to a larger scale in sectional plane in Fig. 2. The cylinder trunnions 21 are supported in roller bearings in a frame 3, 9, also carrying the driving- shaft 8 and itself mounted on the vehicle axle b<1>. The cylinder 1 is surmounted by the compressing- pump 29, which is worked directly from the engine piston-rod by the crosshead 32. On one side of the engine cylinder are the pump delivery valves and the cylinder admission valves 34, and on the other side are the pump suction valves and the cylinder exhaust valves 65. The cylinder admission and exhaust valves are worked by similar cam gear on each side of the cylinder, which can be adjusted for the purpose of reversing the engine. The gear for the admission valves is seen in Fig. 3. The valves are worked as the cylinders oscillate by rollers running on inclines supported in a stationary plate 45. These inclines are adjusted in the supporting-plate when required by a lever 48. The cylinder is surrounded by a water jacket 24 communicating with a water tank by circulating-pipes connected to one of the trunnions. The explosive mixture is introduced through the other trunnion. The carburetter may be in the form of a chamber with two sets of spiral intercommunicating passages, in which the air and fuel mingle. (3) Electric ignition is employed, and, in order to ensure accurate timing of the explosions, the sparking is made to depend upon the movements of the valves. The electric circuit is closed by a flange 52, Fig. 2, on the valve spindle making contact with a starwheel. (4) For working with heated compressed air, an air reservoir 74 is provided into which air is forced by a pump 72. The reservoir is connected with the cylinder by flexible or sliding pipes 76. The heat imparted to the air is obtained from the cylinder. Means are provided for putting the valves of the compression pump 29 out of action, either at one or both ends when it is desired to work with air. (5) Roller bearings are employed for the crank shaft and crank-pin. These are lubricated as shown in Fig. 2. A lubricant, preferably in the form of grease, is contained in cavities in the crank-pin and crank shaft respectively, and is constantly forced through ducts into the bearings by the pressure of washers or pistons acted on by springs. The springs are enclosed between the washers and caps supporting rods on which the washers slide. (6) The propulsion of the vehicle is effected by a combination of rope and friction gearing. The rope, passing round a pulley on the engine shaft and round a pulley on the vehicle axle b<1>, is capable of being slackened or tightened by shifting the engine frame. This is effected by means of an eccentric 91, as shown in Fig. 3. When the rope is slack, a grooved frictionwheel on the axle can be made to engage with a similar wheel on the engine shaft.