200 



Popular Science Monthly 



You don't need to scratch your phonograph records when starting 

 them, for the flashlight shows you the exact position of the needle 



A Flashlight To Show the Position of 

 Talking-Machine Needles 



SOMETHING new in the line of attach- 

 ments for talking machines has been 

 placed on the market by George E. Ber- 

 necker, a well-known Milwaukee electrical 

 designer and inventor, who has developed 

 a flashlight illuminating device, which 

 makes it easy and safe to operate talking 

 machines in the most subdued light. 



The illustration above shows the flash- 

 light attached to the machine. The light is 

 flashed directly upon the path of the needle 

 so that there is no danger of the record 

 being scratched when the machine is 

 started. 



New Type Motorcycle Uses Two- Cycle 

 Motor with Magneto in Flywheel 



LOOK at the accompanying picture of a 

 new motorcycle. Notice that it is not 

 driven by gears and that it is very simple. 



ARMATURE COILS 



FLYWHEEL 

 \ 



Since a two-cycle instead of 

 a four-cycle motor is used, 

 as well as a flywheel mag- 

 neto, the usual valves, gears 

 and cams are dispensed 

 with. The employment of 

 the flywheel magneto elimi- 

 nates a series of driving 

 gears and sprockets so that 

 the only drive taken off the 

 crank-shaft is that of the 

 main belt drive to the rear 

 wheel. 



The flywheel magneto is a 

 new departure in motorcycle 

 construction. It is cup- 

 shaped and has a heavy rim, 

 to the inside of which are at- 

 tached a pair of permanent 

 magnets as shown in one of 

 the accompanying illustrations. The arma- 

 ture coils, the circuit breaker and the con- 

 denser are mounted on a circular plate which 

 is carried on a boss on the crankcase of the 

 motor and which fits snugly into the cup- 

 shaped portion of the flywheel, without, how- 

 ever, contacting with the inside of the rim. 

 At every complete revolution of the fly- 

 wheel the field magnets are brought into 

 proper relation with the armature to induce 

 the igniting current. At just the proper in- 

 stant a cam mounted on the flywheel hub 

 operates the circuit-breaker, causing the 

 spark to jump the plug gap. The timing of 

 the ignition is effected by loosening the 

 clamps holding the stationary plate to the 

 crankcase boss and rotating the plate 

 slightly in the proper di- 

 rection. 



The advantage of such an 

 arrangement is that there are 

 fewer parts " to 

 be greased and 

 cared for or to 

 get out of order. 



iClRCUIT DKtAr.LK 

 CAM. 



CONNEaiON TD SPARK, PLUG 



The flywheel magneto is cup-shaped and has a heavy rim to which is attached a pair of per- 

 manent magnets. There are none of the usual valves, gears and cams in this machine 



