596 



Popular Science Monthly 



This Ice- Shaver Saves Muscle 



A SHEET met- 

 al blade pro- 

 vided with a cor- 

 rugated cutting 

 edge is secured to 

 two side-arms, 

 which act as a 

 guide when the 

 device is in opera- 

 tion. The entire 

 device is fitted to a convenient handle. 

 In use the cutting edge is pressed to the 

 ice and is guided by the metal side-arms. 



A Foot -Propelled Motor Skate 



THE accom- 

 p a n y i n g 

 sketch shows a 

 no\'el form of 

 skate in which the 

 power of locomo- 

 tion is supplied 

 by the feet of the 

 skater. The foot-piece is mounted be- 

 tween the two wheels, slightly lower than 

 their centers. Within the frame proper is 

 concealed a strong steel revolving screw, 

 which communicates with the rear wheel 

 ])y means of the ratchet gearing shown in 

 the diagram. To set the skates in mo- 

 tion the skater applies the power to the 

 screw by pressing down on the foot- 

 plate, which is connected with the screw 

 by the crank in front of the toe. Thus 

 the drive-wheel, which is the rear wheel 

 of the skate, is set in motion. The 

 model shown is provided with two 

 wheels; but this same mechanism may 

 be applied to the four-wheeled skate 

 wi-th equal facility. 



A Tooth-Brush Which Fits Your Finger 



ACASING 

 of all-abi 



composed 

 ibsorben t fab- 

 ric, and fitted on one side 

 with a bead or flange, is 

 held on one finger while 

 cleaning the teeth. To the 

 end of the de^ ice a string 

 is fastened, which may be 

 used to hold the case on the 



finger while in use, or may be used to 



clean between the teeth. 



A Policeman's Club Which Is Also a Gun 

 A POLICE 



MAN'S club 

 is provided with 

 an internal mech- 

 anism whereby 

 the club may be 

 converted into a 

 firearm, to dis- 

 charge one bullet. 

 By means of a 

 s^'stem of springs, the firing-pin is held 

 retracted until the handle of the club is 

 unscrewed for a short distance. This 

 action releases a safety catch, and the 

 cartridge is ready to fire. In discharging, 

 the handle is pulled back and released. 



Chalking Billiard Cues Mechanically 

 C Y LIN- 



A 



DRIC AL 



holder for chalk 

 is cast integrally 

 with a short rod, 

 in which is a spi- 

 ral slot. The en- 

 tire device fits ov- 

 er a rod project- 

 ing down from 

 the ceiling. On this rod is a pin, which 

 fits into the spiral groove on the chalk 

 holder. When the cue is placed in the 

 funnel-shaped opening of the holder, an 

 upward push causes the device to re- 

 ^•oh•e until the pin has reached the end 

 of the spiral groox'c. 



Parting Thick Tresses 



AB O H E MI - 

 AN in\entor 

 has patented a 

 comb intended 

 for owners of 

 thick hair which 

 refuses to stay 

 parted. As shown 

 in the illustration, 

 the de\ice con- 

 sists of two combs which are secured to 

 an elastic band. The combs are inserted 

 in the hair at the point where the part 

 is desired, and then drawn apart. At the 

 same time, the band is being stretched 

 over the head and holds the hair down 

 flat. The combs can then be released 

 from the head, while the band is re- 

 tained in position. 



