An Adjustable Wrench 



Sign That Rolls Up 



Pliers of Improved Design 



A Tool That Takes the Place of Nine 

 Wrenches 



An adjustable wrench which will re- 

 place nine sizes of solid wrenches has 

 recently been put on the market. The 

 "Crescent" wrench, as it is called, fol- 

 lows in outline the 22^ degree engineer's 

 wrench. It was originated to meet the 

 demand for a tool that would equal the 

 solid wrench in efficiency and eliminate 

 the necessity of having a separate wrench 

 for each sized nut. It is drop forged 

 of open hearth steel made according to 

 a special formula. The heat treatment is 

 unusually interesting. Ordinary case 

 hardening hardens the surface of the 

 tool but leaves the interior porous and 

 brittle. To administer the correct heat 

 treatment which will result in toughness 

 both exteriorly and interiorly is the re- 

 sult which the manufacturers of this 

 wrench worked jfor several years to ac- 

 complish. 



"For Hire" Sign That Rolls Up 



A "For Hire" sigri for use on "Jitney" 

 busses, which rolls up out of the way 

 when the automobile is commissioned, is 

 in general use among the chauffeurs of 

 Portland, Oregon. The sign is built like 

 a shade, consisting of an ordinary white 

 or light cream-colored window shade 

 about eighteen inches wide on both sides 

 of which are painted the words "For 

 Hire" in large letters. The shade roller 

 is attached by screws directly below the 

 wind shield frame. When the automo- 

 bile is untenanted, the shade is drawn 



up and hooked over the top edge of the 

 glass. When the automobile is in use, 

 the sign is rolled up out of the way. 



Pliers That Work Close to a Wall 



Hand-forged pliers which are the acme 

 of simplicity and durability simplicity 

 to the degree that they are only manu- 

 factured in one size, and durability in 

 that they are made of hand- forged tool 

 steel are now being manufactured to 

 meet the exacting wants of the iron 

 worker and electrician. The jaws have 

 a large compass ; that is to say, they will 

 grasp surfaces of varying size, while the 

 cutting teeth are so incorporated into the 

 design that a wire can be easily cut, no 

 matter how* close to the wall or to a 

 similar wire or bundle of wires it lies. 

 The "D. & H." pliers, as they are known 

 to the trade, can be readily sharpened or 

 renickeled. They are seven inches in 

 length. 



An Automatic Automobile Jack 



An automobile jack that works auto- 

 matically is one of the latest luxuries 

 that have been perfected for the motor- 

 ist. The jack, which is a long, low af- 

 fair, is placed on the floor of the garage, 

 the automobile is driven upon it, the 

 wheels following guides. When the prop- 

 er place is reached the car is stopped 

 and four traps automatically drop from 

 beneath the four wheels. This is accom- 

 plished without lifting the weight of the 

 car. The car is left supported on rubber 



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