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

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��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-

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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.

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