Do It With Tools and Machinery 



At right: A "gun" for 

 driving nails in hard- 

 to-reach places. It is 

 a steel rod with a brass 

 tube shank, having a 

 larger tube enclosing a 

 light coil-spring for a 

 hand-grip. The ten- 

 of the spring is 

 sufficient to hold the 

 nail in the chuck end 

 ready to be driven 

 when it is set in place 



held by threads 



Expanding sleeves 

 forced into hose 



Threaded coupling 

 ring binds outer ' 

 casings together 



Gasket/ 



Flange forced down 

 keeping watertight ,1 



A metal coupling for con- 

 necting the ends of a hose 

 in a perfectly steam-tight 

 joint, avoiding all leaks 



A motor-operated collar ironer with 

 a revolving head which irons, rolls 

 and polishes collars of different 

 shapes without making them rough 



A guide for use in putting 

 hinges on doors and 

 frames so that the holding 

 pins can be inserted easily 



210 



