GB693417A - Telescopic aerial for vehicles, in particular for motor cars - Google Patents

Abstract

693,417. Aerials. LANDENBERGER, E., and EBERLE, O. Dec. 28, 1951 [Dec. 29, 1950], No. 30275/51. Class 40 (vii). A remotely-controlled telescopic aerial for vehicles comprises a stationary guide-plate 18, an operating shaft 17, axially journalled in the guide-plate 18, a rotatable spool 13 carried on the operating shaft 17 face-to-face with the guide-plate 18 and in spaced relationship therewith, said spool 13 having a circular groove 15 in its face adjacent to the guide-plate, a Bowden cable having one end of its outer member 8 secured to the guide-plate and the corresponding end of its inner member 10 passed through the guide-plate for winding in the groove of the spool, and a telescopic rod having a fixed portion thereof secured to the other end of the Bowden cable outer member and a movable portion thereof secured to the other end of the Bowden cable inner member. The telescopic rod consists of several tubes sliding one within another with a solid rod forming the innermost element to the bottom of which is secured the inner wire of the Bowden cable whose outer member is secured to the static bottom element of the telescopic assembly, Figs. 1 and 2 (not shown). The operating shaft 17 of the remote control rotates within a tube 19 fixed at one end to the guide-plate 18 and threaded at the other end to receive a nut 31 by means of which the device is clamped to the vehicle dashboard 29. A spacing member 24 between the plate 18 and dashboard 29 is cut away (as shown in Fig. 5) to admit the Bowden cable into an oblique hole 28 in the guide-plate 18. A cable clip 26 retains this end of the Bowden cable outer member 8 in position and the inner wire 10 is guided through a hole 34 into the spool 13 where its end is fixed to an inset ring 16 having a groove 15. The guideplate 18 carries a guide-ring 33 to cover the groove 15 so that the coiled wire 10 cannot fall out. Two nuts 21 on the threaded end 20 of shaft 17 ensure the correct spacing between spool 13 and plate 18. The end 20 of the shaft 17 is also provided with a knob 22 by which the wire 10 may be wound off or on to the spool 13 and thereby raise or lower the telescopic aerial. Instead of manual operation the device may be driven by an electric motor through worm gearing, means being provided for automatically switching off the motor when the aerial is pushed fully out or pulled fully in.