Poptilar Science Monthly 



477 



How to Drill Holes Quickly in Wood 



WHEN drilling holes in wood to a 

 predetermined depth, a metal 

 fiber or other tube of the correct length, 

 placed over the bit as shown in drawing, 

 will make it possible to do this part of the 



^«» 



A Tube of Metal Fiber Placed Over the Bit 

 Accelerates the Job 



work with a great deal more speed and 

 accuracy than is usually attained by ama- 

 teurs at the work. — Walter Franseen. 



K: 



ber button and a 

 both difficulties. 

 The bolt should 



A Screen Door- Check 



LTHOUGH a 

 screen door is a 

 summer necessity, 

 it is also a frequent 

 source of annoy- 

 ance because of its 

 tendency to slam. 

 A pneumatic door- 

 check overcomes 

 the slamming but 

 allows the door to 

 remain open long 

 enough to admit 

 flies. The door- 

 check described, 

 consisting of a rub- 



A Rubber Button 



and Small Bolt Are 



Required 



small bolt, obviates 



have a head about 

 ^ in. in diameter, and a shank about 3 

 ins. long and >4 in. in diameter. It is 

 screwed or driven into the inner face 

 of the door near enough to the outsidc 

 edge to clear the jamb when the door is 

 closed . 



The button is a boat-shaped piece of 

 rubf)er a trifle longer than the bolt. It is 

 attached to the jamb by a screw J4 of 

 the way from the top of the button. 

 It swings loosely on this screw and hangs 

 by its own weight, as in the illustration, 

 where the door is pictured ajar showing 

 clearly the mechanism. 



When the door closes, the projecting 

 head of the bolt, B, comes first in contact 

 with A, the upper end of the button. 

 As the head of the bolt passes, it swings 

 the button out [as indicated by dotted 



line. The lower end of the button, C, 

 thus comes in contact with the face of 

 the door before the door touches the 

 jamb. 



The blow is consequently checked by 

 the rubber and the door closes quickly 

 and without noise. The button drops 

 back into place again ready for the next 

 comer. — 1£. P. Thorntox. 



Cooling a Ship's Laundry 



ASH IP'S laundry is a hot place — not 

 the only one, of course, and not 

 the most confining one. Besides there 

 are ways of making this one consider- 

 ably more comfortable. 



Some of the resourceful sailors on 

 board the U. S. S. Maryland who 

 objected to this particular hot place got 

 relief as follows: Several sheets of 

 galvanized iron were cut and bent as 

 shown in the drawing. Two small 

 straps were made to go with each sheet. 

 Holes were punched for small stove bolts, 

 and the fans were attached to the' over- 

 head shafting, as shown. 



This scheme for improvising fans 

 when shafting is in operation, could be 

 used in many other situations. The 

 bolts should clamp the shaft tightly to 

 prevent slipping. — A. and P. Thompson. 



She et metal fans 



— '- — »tC^J^ 



STOVE BOLTS 



SHEET METALSTRAPS 



-iii-im. 'ftp--. 





Improvised Electric Fan at Rest and in 

 Operation 



