114 



Semaphore Signals for Automobiles 



THE illustra- 

 tion shows 

 how an automo- 

 bile driver may 

 convey his inten- 

 tions to the occu- 

 pants of a car in 

 the rear, by means 

 of a semaphore signaling device. It 

 will be noticed that the two sema- 

 phores are mounted on the rear mud- 

 guards of the car; and by means of 

 an electromagnet concealed in each 

 rohnnn the signals can be controlled 

 from the driver's seat. If the automobile 

 is to stop, both semaphores will be 

 thrown up; if a turn to the right is 

 intended, the right semaphore arm will 

 be displayed. For night use electric 

 lights are provided in the signal columns, 

 and by means of red and green glass 

 disks in the semaphores the desired 

 signals may be easily displayed. 



Combined Penholder and Blotter 



NUMB E R 



A 



jTX of disks 

 made of blotting 

 paper are held on 

 two small washers 

 which are fasten- 

 ed to the ends of 

 a central axis. 

 This device is 

 attached to a pcn- 

 1 clip similar to those 

 hold a pen or pencil 

 use, the blotter is 

 instead of being 



Popiilar Science Monihhi 



An Adjustable Golf-Tee Board 



holder by means of 

 connnonly used to 

 in the |)ocket. In 

 rolled over the writing 

 placed flat. 



Saw Cuts Square Hole 



A SAW that cuts 

 a square hole 



handle so that the 



in the initial stages is eliminated 



auger bit is not needed. 



in a floor witliout 

 the aid f)f any other 

 tool is shown in the 

 illustration. The 

 saw is rounded so as 

 to make the incision 

 and provided with 

 a n a d j u s t a b 1 e 

 strain on the wrist 

 An 



AGOLF-TEE 

 board which 

 pro v"ides th rce tees 

 at different eleva- 

 tions above the 

 board has been 

 invented to meet 

 the ideas of indi- 

 vidual players. 

 On a disk revolv- 

 ing in a vertical 

 slot or opening of 

 the board the three tees are attached and 

 project varying distances from the axis 

 of rotation so that the balls may be sup- 

 ported at different elevations above the 

 board. 



When the ball is driven from either 

 one of the individual tees the tee as a 

 whole will yield and turn in the direction 

 of the blow, thus reducing the possibility 

 of injury to the tee and permitting an 

 unretarded release of the ball. 



Skinning the Slippery Eel 



THIS clamp- 

 like tool 

 grasps the skin of 

 an eel, tweezer- 

 fashion, and strips 

 it off in much the 

 same way as one 

 remo\es a glo\e. 

 Special notches 

 enable the jaws to 

 grip the skin securely. The opposite end 

 of the tool is a knife-lilade useful in 

 further dissection. Projections on the 



hack of 

 fish. 



the blade are handy in scaling 



in Your Bath-Tub? 



Why Fall Down 



PERFORA- 

 TIONS are 

 made in the batli- 

 tub rim to ser\e 

 as handlinjds. the 

 holes being cut 

 in a variety of 

 forms as shown. 

 ,'\ lirm grip can 

 be secured on 

 these even though the hands be slippery 

 with soap. Thus the slips and sliiles 

 frequently ri'sulting from an insecure 

 handhold are avoided. 



