A Motor-Driven Brake 



The pressure of 



TH E manual 

 labor usually 

 required for 

 the handbrakes of 

 a motor vehicle is 

 avoided by an elec- 

 tric brake requir- 

 ing only the pres- 

 sure of one finger 

 to operate it. The 

 device consists of a 

 small electric 

 motor which 

 drives a tiny 

 drum carrying 

 a steel cable 

 attached to the 

 brake -equaliz- 

 er and to the 

 regular brake- 

 drums. The 

 motor is con- 

 trolled from 

 the steering- 

 wheel column. 

 The motor 

 with its drum 

 can be located 

 under the 

 body, under the 

 driver's scat or 

 under the mo- 

 tor-hood, as 

 shown in the accompanying illustration. 

 It lakes u|) \ery little space, since it is 

 only four inches high, six inches wide and 

 eight inches long. It can be attached to 

 any car simply by substituting it for the 

 usual hand-levers, lever quadrant and 

 brake-rod connections. 



The controller consists of 

 a two-point switch enclosed 

 in a small Iinusing bolted to 

 the steering-wheel column 

 directly beneath the wheel, 

 within easy reach of the 

 driver's hand. A simple 

 movement (>( the switch- 

 handle controls the brake 

 throughout its entire range 

 of operation, thus making 

 it very easy for a woman to 

 drive even the heaviest of 



finger stops the err 



fOOT BRAKE 

 CA6LE NOT CHANGLO 



The brake-motor is controlled from the steering- 

 wheel column by simply moving a switch handle 



cars. The manual 

 labor in braking is 

 analogous to that 

 of cranking the 

 motor, which was 

 done awa\- with by 

 the electric starter, 

 so that the ulti- 

 mate general ap- 

 plication of some 

 form of mechan- 

 ical brake is prac- 

 ticallyassured. 

 The electric 

 brake draws its 

 operating pow- 

 er from the 

 regular vehicle 

 baller>' which 

 ma\beof 6, 12 

 or 24 volts. The 

 current con- 

 sumed is said 

 to be \- e r >■ 

 slight. 



The device 

 contains sev- 

 eral novel me- 

 chanical fea- 

 tures, the total 

 reduction 

 from the brake- 

 motor to the 



Diagram showing controller 

 and the power connection 



drum carrying the brake-cable being four 

 hundred to one. This is secured by 

 means of a non-reversible worm-gear on 

 the armature-shaft which drives another 

 gear in mesh with an internal-toothed 

 gear on the cable-drum. Between the 

 drum and the worm-gear is an adjustable 

 friction-clutch b\' means of 

 which suflirient pressure is 

 secured to transmit tiie 

 maximum braking effect, 

 but beyond which, it will 

 slip. After a thousand- 

 pound pull has been ' ex- 

 erted on the cable, the slij)- 

 ping clutch i-omes into pla\ , 

 pre\eTitiiigan>' further pull, 

 ^\]lile a ratchet keejis the 

 lirake bom slipping ot1. 

 Because of the powerful 



OH 



