Popular Science Monthly 



317 



by the force applied to the screw driver, 

 though if the screw is lubricated by be- 

 ing pushed into a piece of yellow soap it 

 may be driven more easily ; this is often 

 necessary even if hole c has been bored. 



To Make a Mission Screen 



ALL the tools necessary for making a 

 . screen are a hammer, a few fine 

 nails, a saw, plane, gimlet, rule and glue 

 pot. The necessary material may be found 

 at most sash and door factories or plan- 

 ing mills free of cost. They are : Four 

 pieces like A, 2 like B and 6 like C in 1" 

 boards. If possible obtain pieces of the 

 same wood, ash or elm being preferred. 



If no work bench is available, nail a 

 ^" piece to the floor and by using this 

 to keep the stick from sliding, plane sides 

 smooth and sandpaper. Then take two 

 pieces of A and the two B's and at a and 

 b bore holes for the casters. Cut in all 

 the A's and B's Y^' cuts at m, n, p, q. 

 Then with knife or chisel break out the 

 pieces and square the holes. Cut out the 

 pieces in the C's at r and s, and smooth 

 the openings. Next procure 2 pairs of 

 suitable hinges and fasten one pair on 

 each of the A's which have not the caster 

 holes. Place the hinges on the face 

 shown in the cut. When this is done, 

 varnish or stain all the pieces thoroughly. 



When the stain has dried, the pieces 

 are ready to assemble. Take 4 of the 

 C's and 4 of the A's and glue firmly ; a 

 few fine nails may be used, care being 

 taken that the wood does not split. Then 

 assemble the 2 B's and the remaining C's. 

 When glue has set, put up the frame, put 

 in the castors and stain or varnish again. 

 When this is dry, a suitable cloth may 

 be attached to this frame. This screen 

 is cheaply made and if carefully built will 

 serve the purpose of an expensive screen. 

 One thing in which care must be taken 



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Construction details of mission screen 



A mission screen easy to make 



is the hinges, which must be on opposite 

 sides, so that the screen when open must 

 form a Z. 



Seam Ripper from Old Safety Blade 



A HANDY device for the housewife 

 may be made from a safety razor 

 blade. Cut a wooden handle 5 inches 

 long. Bore holes to conform to the holes 

 in the blade. Two screws, passed through 

 the blade and the wooden handle will 

 hold the blade firmly. This device will 

 be found exceedingly useful to rip the 

 seams in cloth while sewing. 



To Open a Molasses Jar 



TO remove the top of a honey or mo- 

 lasses can which sticks, the follow- 

 ing will be found practical : Take a 

 piece of stiff wire and bend it into a cir- 

 cle the size of the top. Put this around 

 the top, and with pincers, twist till tight. 



A Simple Ruby Light 



IF a 220-volt carbon lamp of 32 can- 

 dle-power is used in place of the 

 ordinary 110-volt lamp, a dim ruby light 

 will be obtained which will not injure 

 negatives exposed to it in the dark-room. 



