Page:Popular Science Monthly Volume 92.djvu/149

 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

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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.

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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 with staggered joints. This provides a wide covering without supporting posts

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