584 



Popular Science Monthly 



More than two thousand pieces of old boiler tubing were welded to make 

 ten miles of continuous pipe flooring without screwed fittings or joints 



Welding Ten Miles of Pipe for a 

 Skating Rink 



TO make ten miles of continuous pipe 

 was the problem that confronted the 

 builders of a large ice-skating rink at San 

 Francisco. Investigation had shown that 

 in many ice rinks where ammonia sys- 

 tems were built with screwed fit 

 tings, leaks frequently developed 

 in joints supposed to be leak- 

 proof and trouble-proof. The 

 result was shut-downs for re- 

 pairs and a subsequent finan- 

 cial loss to the management. 

 Oxy - acetylene welding 

 not only made the San 

 Francisco ice rink leak- 

 proof but it made possible 

 a remarkable saving in the 

 purchase of pipe. Instead 

 of using new pipe, fifty-five 

 thousand feet of two-inch 

 "used" boiler tubing was 

 purchased at a saving of 

 twenty per cent over the cost 

 of new galvanized pipe. The 

 floor is two hundred and ten 

 feet long and ninety feet wide. 

 The welded portions number 

 considerably more than two 

 thousand. This plan elimi- 

 nated all fear of leaks and 

 proved entirely satisfactory. 



The rubber and felt 

 parts of the device 

 for cleaning and dry- 

 ing the razor blades 



A Convenient Device for Keeping 

 Your Razor Blades Clean 



IT takes nearly as much time to remove 

 safety razor blades, clean and replace 

 them after using, as it does to shave. And 

 if a man's in a hurry, there is an imminent 

 danger of cutting the towel — or his 

 fingers — in the operations. 



A device which will save both 

 your time and your temper 

 and eliminate the danger of 

 cutting your hands, is shown 

 in the accompanying illus- 

 trations. Two pieces of 

 spring brass, which are 

 riveted together, hold a 

 rubber pad on one end and 

 a felt pad on the other. 

 Two strokes on the rubber 

 pad will clean your razor 

 blade, while two more on 

 the felt pad will dry it per- 

 fectly, leaving it clean and 

 bright as when new. 



The convenience of this 

 device makes it unnecessary 

 for anyone to neglect to clean 

 and dry his blades, however 

 great may be his hurry. 

 This means that the blades 

 will be kept from rusting, 

 and will last considerably 

 longer in consequence. 



Maybe you have special needs. Write to the editor about anything within the scope 

 of the magazine. He will be glad to help you. 



