Patent GB-342704-A (GB)
Title: Improvements in or relating to means for deflecting the head lights of vehicles
IPC: B60Q1/124
Filed: 1929-11-04
Abstract: 342,704. Vehicle lamps. DIETRICH, F. R., 42, Langwiederstrasse, Pasing, Bavaria, Germany. Nov. 4, 1929, No. 33550. [Class 75 (iii).] Directing.-In means for directing vehicle headlights from the steering- gear, a gearing having a transmission ratio substantially greater with smaller steering deflections than with greater steering deflections, such as that described in Specification 316,273, [Class 75 (iii), Lamps &c., Details &c.], is provided between the lamps and the steering-gear and the lamps are connected together by a trapezoidal link gear 43, 45, which draws the light beams the farther apart the greater the angle of deflection. As shown, one lamp 41, Fig. 1, is connected to a crank and slide gear 309, 321, mounted in a casing 300 and adapted to be coupled with a disc 303 in mesh with a rack 304 connected by a flexible steel wire 20 to a rack in mesh with a toothed sector, mounted in a casing 100 and connected by a lever 12 and a link 6 with the steering lever 1. The wire 20 passes through a copper or other bendable guide tube 2 containing preferably solid lubricant. The other lamp is connected to a device in a casing 500 for forcing the lamps into the normal position and comprising a lever 501, Fig. 11, provided with links 508 slidable in plates 507 engaging springs 506 held between stops 505. The casings 300, 500 are mounted on a transverse rod 30 between the mudguards. In the normal position, the optical axes of the lamps are displaced about 2‹ outwards. The angle lever 309, Figs. 8 and 9, carries, at one end, the crank-pin 311 and roller 312 working in an inclined slot 320 in the slide 321 secured to the lamp spindle 322 and, at the other end, a pivoted pawl 314. One end of the latter extends over a pin 308, on which the lever 309 and disc 303 are loosely pivoted, and is connected by a link 334 to a plate 333 in a sleeve 319, containing a spring 332 and connected to a wire 51 extending through a tube 5 to an operating handle 50. The lever 309 is normally coupled with the disc 303 by the pawl 314 engaging in a notch 316 under the action of a spring 317, held between a plate 318 and the casing 300. On pulling the wire 51 when the lamps are in the normal position, the pawl is disengaged from the notch 316 and engaged in a notch 338 thereby locking the lamps. If the lamps are deflected, the guide 337 prevents movement of the pawl so that the spring 332 is tensioned and automatically forces the pawl into the notch 338 when the lamps are returned to the normal position. The lamp spindles 322 are carried in bushes 324 inserted in tubular projections 323 provided with ring caps 326 containing a packing- ring 327 and a spring ring 328. A safety device 60 for preventing damage to the steering-gear in the event of the deflecting apparatus becoming jammed is provided in the link 6. In one form, the link consists of a rod clamped in the conical split-end of a tube by a cap nut. In a second form, the rod and tube are connected by a soft metal locking-pin. In a third form, the link comprises a rod 62, Fig. 7, passing through holes in plates 66 normally held by a spring 65 against adjustable stops 68 on a tube 61, stops 67 on the rod engaging the outer surfaces of the plates 66. Specification 180,391, [Class 75 (iii), Lamps &c., Details &c.], also is referred to.