Popular Science Monthly 



the setting is correct the stripper is fastened 

 to the die and the punch is forced through. 

 It is not necessary to force the punch 

 entirely through, as a part must be milled out 



^ 



O' 



^ 



^ 



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FI6 5 

 Stripper plate to prevent the stock from 

 sticking to the punch when it is drawn 



for the brass stock to pass through. For 

 this die the material will be J4 in. wide and 

 the stripper milled to a depth of 3^^ in. 



After removing all sharp edges from the 

 Btripper, the hole for the punch should be 

 filed slightly to provide a sliding fit. When 

 assembled on the power press a strip of brass 

 is run through the opening, as the press is 

 operated, and blanks are made at each stroke 

 to the shape and size shown in the illustra- 

 tion.— Geo. F. KUHNE. 



133 



A Self -Supporting Roof for a Small 

 Public Garage 



IN rural districts many contractors are 

 being confronted with the problem of 

 building public garages without the trouble- 

 some posts to support the roof girders. 

 The garage with posts here and there over 

 the floor area is of little value. The plan 

 here illustrated shows how an economical 

 truss can be built of wood so that the roof can 

 be supported without posts. This design is 

 practical for garages as wide as 60 ft. and is 

 built up entirely of wood timbers and 1-in. 

 rods that can be purchased from any 

 country lumber dealer's stock. 



The lower member is built up of three 2 by 

 10-in. planks spiked together with joints 

 staggered so that no two end butt-joints will 

 be at the same place in the girder. 



All the upper part of the main truss, is 

 made of 4 by 6-in. stock, cut according to 

 the pattern with 1-in. rods as ties, and double 

 nuts at the bottom for tightening. The 

 strap iron at the end of the truss is the main 

 part. Any carpenter with ordinary skill can 

 erect this design satisfactorily. Finish up 

 with a neat cornice as the drawing illus- 

 trates. — W. E. Frudden. 



Supporting roof girders with a trussed frame having a lower member built up 

 of three boards to make the length, all of which are spiked together witli 

 staggered joints. This provides a wide covering without supporting posts 



