

THE INDIA RUBBER WORLD 



August 1. 1915. 



Ti„ a plane surface in a straight 



line and i ivith the water line or pump and idled with 



water, venting all the air. The air-cock is then closed and 



i inch applied, ["he test shall 

 then taking original measurements. Pressures are 



dizei 



Jl be made at a rate of 300 pounds 

 minute. While making the elongation and twist measure- 

 ments the hose shall be held at specified pres un foi nol mon 

 than two minutes. In the bursting test, in the curved position 

 the apparatus shown in Fig. _' shall be used. The kinked test 

 shall be made on 3 foot samples with the ends tied together and 





si 



Test I, Hose Straight. 



Extra Heavy Flexible Pipe 



Tczft. Hose Curved on Radius of 2\ feet 



Test 3. Hose Kinked, 

 Ends Tied Together. 



Fig. -'. Apparatus for Pressure Test. 



couplings touching with a sharp kink in the middle of the 

 hose; or if made on a 50-foot sample the hose shall be tied 

 together at a point 18 inches from where the kink occurs. 



TESTING TIRE FABRICS. 



AT the recent meeting the Committee on Standard Tests and 

 Specifications for Textile Materials reported tentative 

 methods. This report was amended and accepted for publication 

 for one year in the Year Book of the Society, subject to further 

 action a year hem 



In outline the methods relate to the following matters: (1) 

 liny a II) null swatch from either end. (2) Test speci- 

 i 8 inches long by 12 inches wide, raveled each 

 to required width, using a count scale (see figure). 

 (3) 'l\>t sample- to be oven dried (221 degs. to 230 degs. 

 Fahrenheit) to constant weight; the breaking stress to be 

 ined within 30 seconds from removal from oven; the 

 length of specimen between jaws to be 3 inches, moving jaw 

 to travel uniform rate of 12 inches per minute. (4) Elonga- 

 tion measured, on reference marks 3 inches apart, at instant 



O si Si ai e for Testi \'. F ibrics. 



of break:.. _■ : per square yard shall be based 



upon the din i a complete roll expressed as dry 



weight, or standard weight. The latter is the dry weight in- 

 y a standard moisture allowance of 8.5 per cent. 

 (6) Moisture test samples are taken from both ends of roll 

 while dii: and net weight of roll are determined 



quickly an iples for moisture, weighing 



■ veighed in air-tight 



(8) The dry weight of 



the roll equal> oil minus that weight multi- 



plied by the percentage of moisture, by test, divided by 100. 

 (9) The width of roll shall be determined as the average at 

 5 places uniformly distributed along length of roll. 10) 



I I '• \ l ION ok 'J'HsT SPE( [MENS. 



Length of roll shall be determined by registered yardage over 

 a measuring drum of known circumference. Uniform tension, 

 suggested for this measurement, to be 2.5 times the weight 

 of 5 running yards of the fabric. 



STORAGE BATTERY TRUCKS FOR FACTORIES. 



The aim of the factory manager is to eliminate all lost mi tion, 

 thus increasing the output and decreasing cost. In a great many 

 industrial plants half-finished and finished product must be 

 transferred from one department to another and tins work is 

 done largely by means of hand trucks handled by a crew of men. 



Examination of the internal transportation facilities of a plant 

 will often disclose the lack of economy in the elevator service — 



sometimes it is badly congested and at other times lying idle. 

 As trucks with storage batteries will take easily a 15 or 20 per 

 cent, gradient on inclined plains between floors, they are advised, 

 thus saving delay, interest, depreciation and operating expense 

 of elevator machinery. 



In all the plants where these conditions prevail, storage battery 

 trucks pay a handsome annual return on the money invested. 

 The illustration shows the latest type of rubber shod truck. 

 (Edison Storage Battery Co., Orange. New Jersey.] 



RUBBER EMBARGOES. 

 The Union of South Africa has recently placed an embargo 

 on export. ilions to all destinations other than the United King- 

 dom, British Possessions and Protectorates, of rubber (including 

 . waste and reclaimed, rubber solutions, solutions containing 

 rubber, jellie containing rubber and any other preparation con- 

 taining rubber) and g Is made wholly or m part of rubber, in- 

 cluding tn 



The Governments of the Federated Malay States and British 

 Honduras, the Canadian Customs Department and the Common- 

 wealth of Australia have all announced similar embargoes. 



