Patent GB-189713514-A (GB)
Title: Improvements in Motor Cycles.
Inventor: HERTEL MAX E
Filed: 1897-06-01
Granted: 1897-07-24
Abstract: 13,514. Hertel, M. E. June 1. Motor road vehicles.-(1) Driving-gear, brakes, &c. A motor of suitable construction has two cylinders 1 connected by pistons and connecting - rods to the crank 4 of the crank shaft 5, and the motion is transmitted to a countershaft 7 by means of cogs and pinions. The countershaft is formed in three sections connected by universal joints 10, the central section carrying the flywheel F, and to the outer sections journalled at 23 are secured the friction-wheels 12 for transmitting the motion to the wheels. The friction-wheels consist of two discs, Fig. 5, one of which 16 has a hub 17 fitting loosely upon the shaft 7 and forming a bearing for the sleeve 18 of the other disc 19. A pin fastened in the hub 17 projects through a longitudinal slot in the sleeve 18 to prevent relative rotation, and a pin 21 secured to the shaft 7 passes through slots in the hub and sleeve of the discs, portions of these slots being at an angle to each other and to the axis of the shaft. A spring 21<a> serves to keep the two discs together. The wheel engages with a friction ring 13 fixed to the wheel. The journal boxes 23 are free to slide upon the frame part 24, and are connected by links 25 to a pair of arms 26, fulcrumed upon the frame part 27, which are connected by a tie-rod 28. This tierod is provided with a tooth 29 engaging a dog 30, Fig. 11, pivoted to a hand-lever 31 fulcrumed on the frame, and the dog is kept in position to engage the tooth by means of a spring 32, and is connected by the rod 33 to a hand-lever 34 fulcrumed at the end of the lever 31. By moving the hand-lever 31, the friction-wheel 12 may be moved in and out of engagement with the ring 13, and if moved far enough out of engagement a brake block 36 fixed to the link 25 is brought into contact with the tyre of the wheel and the brake thereby applied. If the hand-lever 34 be pressed against the lever 31, the dog will not engage with the tooth, and the lever may be moved without operating the above portion of the mechanism. In order to start the motor, a dog 37 is pivoted to the handlever and engages a ratchet-wheel 37<a> mounted on the shaft 5, its heel 38 being engaged by a tappet 39 under the influence of the springs 32 and 40 secured to the rod 33. Normally the dog is out of engagement with the ratchet-wheel, but when the lever 34 is pressed to the dotted position shown there is engagement between the two and the shaft 5 may be turned the required amount for the induction and compression strokes usually required. When the motor is in operation, a suitable governor 41 may be used to regulate the speed, the action of the governor being itself controlled by hand mechanism. A suitable plug valve 42, Fig. 12, may be employed, the stem 47 of the valve being pivotally connected to one end of the lever 48 carrying a pin 49 engaging with a sleeve 50 of the governor, the other end of the lever passing through a perforation in one end of the bell-crank lever 52, the other end of the lever being connected to a bent rod 54 working within the lever 31. The upper end of the rod 54 forms a shoulder 57, a disc 58 being loosely mounted thereon, to which is secured a sleeve 59 which surrounds the upper portion of the lever 31 and is provided with a spiral slot into which fits a pin fixed to the lever 31, the disc being fastened by a nut 62. By turning the sleeve 59, the spiral slot and pin cause it to move endwise on the lever 31 and so raise and lower the rod 54, and consequently alter the position of the lever 48 and so adjust the valve. The disc 58 may be provided with a graduated scale and index. (2) Steering ; frames. The forks 64 of the front wheels are provided with arms 65 extending rearwards pivotally connected to a rigid rod 66 connecting the arms. Between these arms is also a connection comprising a spring 67 and two chains or similar inelastic devices 68 by which the ends of the spring are connected to the opposite sides of the frame. The connections between the frame and the spring 67 are preferably adjustable, as shown. A link 73 extending backwards is pivoted to each of the prongs of the front forks, the two links on opposite sides of the wheel being connected, preferably, by the axle 74. The links are held in normal positions by means of springs 77 located upon opposite sides of the wheel 7<a>. The driving-wheels 11 are mounted upon pins of the cranks 78 journalled in the cross-tube 79. Pins 80 extend inwardly from the crank and are connected by means of projections 81 and links with the springs 83 secured to the frame.