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A Parallel Ray Reflector. 



Battery Charging Equipment. 



New and Powerful Lamp. 



use can be collapsed and readily carried 

 in the pocket. 



Lamp Reflector Throws Parallel Rays 



One of the latest conveniences for 

 automobile and motor boat owners is an 

 electric lamp and reflector which throws 

 a powerful concentrated beam of light 

 straight ahead. The lamp is claimed to 

 be more efficient and* brighter than even 

 the nitrogen-filled lamp which has al- 

 ready made noticeable inroads into the 

 ordinary tungsten lamp trade. The new 

 lamp is filled with a peculiar new gas of 

 unusual properties, and it is manufac- 

 tured in sizes small enough to pass 

 through the rear of any reflector without 

 fingering the reflector as is ordinarily 

 necessary. A slender tubular bulb is em- 

 ployed instead of the usual round lamp, 

 with the result that greater efficiency is 

 gained. In using a round bulb the rays 

 of light must pass through the glass 

 globe twice after leaving -the reflector 

 surface, whereas in the case of the tubu- 

 lar lamp all rays of light are projected 

 ahead with no resistance after they strike 

 the reflector. A small, intensely bright 

 "spot" of light characterizes the new 

 bulb, with the result that the rays are of 

 a clearer quality than is obtained with 

 the long, diffusing filaments. 



Battery Charging Equipment 



A battery charging equipment to meet 

 the constantly increasing demands of the 

 automobile trade has recently been put 

 on the market. This equipment consists 

 of an exceedingly compact motor-gener- 



ator and a simplified switchboard, so that 

 an inexperienced operator cannot cause 

 a great deal of harm. One of the most 

 ingenious details of the equipment is its 

 provision for starting. The motor is 

 non-self-starting, being started from the 

 direct current end, the current being 

 supplied by the batteries which are to be 

 charged, the generator acting temporarily 

 as a motor. This method of starting is 

 accomplished by an arrangement of the 

 knife switches on the switchboard. When 

 the switch is thrown partly in, battery 

 current flows into the generator; it acts 

 as a motor, and when sufficient speed 

 has been attained the switch is pushed in 

 the remainder of the distance, and the 

 line current takes up the work. No other 

 change is necessary, as the batteries are 

 already in circuit. 



Photographic Light 



The nitrogen filled lamp makes it pos- 

 sible for the photographer to make quick, 

 fully timed exposures by artificial light 

 and this without the use of the objection- 

 able explosive flashlight. Among the 

 several reflectors and diffusers recently 

 placed upon the market to meet the de- 

 mand for a suitable fixture in which the 

 nitrogen filled lamp might be used for 

 photographic purposes is the one shown 

 on this page. This device, it is claimed, 

 will furnish a splendid light for the 

 studio, for home portraiture, and for 

 printing and enlarging. Ample provision 

 is made for the dispersal of the heat gen- 

 erated and the reflector is so arranged 

 that a perfect diffusion of the light is 

 effected. 



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