408 



Popular Science Monthly 



Int. Film Serv. 



The force of the outrushing 

 water turns the ten nozzles round 



A Fire- Hose with Ten Nozzles. 

 It's to Be Used in Ships' Holds 



A Spring- Motor for the 

 Human Jaw 



A YOUNG girl was ad- 

 mitted recently to a 

 New York Hospital. She 

 had a form of lockjaw. 

 The surgeons removed the 

 muscles of the lower jaw- 

 bone and substituted a de- 

 vice with a spring to be 

 wound up just as one would 

 wind up a clock. The de- 

 vice was fastened to the jaw 

 and extended over the head. 

 The spring kept the jaw in 

 constant motion. After 

 about three weeks, the de- 

 vice was removed. The 

 muscles of the lower jaw 

 had developed wonderfully. 

 The girl was then put to 

 chewing gum. 



""CMRE in the hold!" Since t 



the 

 freighter sailed the seas, there never 

 has been a warning more to be dreaded. 

 A fierce fire cannot be smothered. There 

 is nothing to be done but to take down 

 the hose and face the music. In an effort 

 to improve on the old 

 and dangerous method 

 of groping about in the 

 dark and the smoke to. 

 locate the seat of the 

 fire, Fire Chief Heffer- 

 nen, of New York, has 

 been testing out a novel 

 system. He has been 

 using a multiple nozzle 

 which floods the hold 

 in every direction. An 

 entire cargo may thus 

 be damaged, but after 

 all, that is better than 

 suffocating the firemen. 



Not one, but ten ordinary nozzles ter- 

 minate at the end of a great hose. When 

 they are lowered into the hatchway and the 

 emergency engines pump away at full load, 

 ten great water streams rush equally out of 

 each nozzle. In doing so, the nozzle mount- 

 ing is turned around, so that no part of the 

 hold is left untouched over a circular area a 

 hundred feet in diameter. About 16,000 

 gallons of water are pumped each minute. 



Cork floats keep the ring 

 and platform afloat. At 

 right : Detail of the device 



The Story of a Life-Saving Platform 

 —And How It Will Not Work! 



SINCE Germany began her submarine 

 warfare, the number of applications 

 for patents of life-saving apparatus has 

 increased a dozenfold. Some of these have 

 at least been reasonable, but most of them 

 have been grotesque. Take, for instance, 

 a device invented by a citizen of 

 Illinois. A man stands upon a 

 wooden platform and straps to his 

 shoulder a buoyant ring from which 

 ^P^ the platform is to be sus- 

 i -»^* " pended when in the water. 

 Unfortunately, however, 

 no instructions are given 

 in the patent copy which 

 would tell the man how he 

 could jump away 

 from the sinking 

 ship. If a person 

 is to stand upon 

 the platform, how 

 is he to use his 

 feet to jump? 



Even if a man 

 could land in just 

 the proper posi- 

 tion in the water, 

 this device, it 

 seems to us, would 

 be no better than 

 the ordinary cork 

 life-preservers. 



3«ood'p1atfo 



