'40 



PopiiUu- Science Monlhbj 



Automatic Word Signals for 

 Automobiles 



DIFFKRIXC". from other forms of 

 traftic signals fitted on automo- 

 biles in that the direction the car is 

 about to take is indicated at both front 

 and rear and that words are used to de- 

 note those directions, the no\el type 

 shown in the accompanying illustrations 

 consists of two metal boxes, one on the 

 dash and the other at the, rear above the 

 registration plate. Each of these boxes 

 contains an opening before which the 

 words "Ahead," ^ "Right," "Left." 

 "Back" and "Stop" can be displayed at 

 will by means of an electric push-button 

 control attached to the steering-wheel. 

 The words arc cut into an endless roll in 

 each box, the mo\ement ot tin' roll 

 being clectricalK' con 

 trolled and ilUimin.i- 

 led at night. Th 

 control has 

 button for 

 i-ach of the 

 words used. 

 T he si g n a 1 

 "Aiiead" is 

 always d i s - 

 played to in- 

 dicate that 

 Ml o \ e m (.• n I 

 lint is changed 

 as dcsiretl by 

 pushing one ol 

 llie oilier bnl- 

 tons. Tlie con- 

 trol bullous 



are interlocking, so that onh" oiie signal 

 can be shown at a time. The signal 

 "Stop" is wired up to the foot-brake, 

 so that it appears at the rear whenever 

 the foot-brake is applied. It autoniatic- 

 all\- disappears as soon as the toot-brake 

 is released. 



THK lifter illustrated is m; 

 witler than the ordinar 



An invalid t>i-ing raised from liis bed by means of the 

 mechanical lifter to allow a change of the linen 



Lifting Invalids with a Minimum 

 of Discomfort 



made a little 

 r\- hospital 

 bed so that it may be placed, in position 

 by being rolled up to the bed from tiie 

 foot, the siiles of the lifter just escaping 

 the sides of the bed. It is an eas\- matter 

 to place the snp|K)rting straps under 

 tin- patienl. When the straps are 

 fiiired the frame to 

 lich the\' are 

 attached ma\- 

 be lifted 

 by means 

 of a 1 e \ I- r . 

 In handling 

 te\er patients 

 wlu) require 

 t r e C| u e n t 

 I a t h s the 

 device is of 

 great service. 

 It nut\" also 

 le used lor 

 transport ing 

 |)atient> from 

 one room to 

 another. 



