\i Gl 51 1. 1915 I 



THE INDIA RUBBER WORLD 



62] 



Tin organized tire workers from the various fac- 



tories have begun to hoi meetings for the n 



mi more members, Xo indii a demand on the fac- 



tor} owners have thus far appeared, but it is that 



i such move is contemplated. It is a little more than 

 20 years sinci the manufacture of automobile tin-- was 

 gun in Trenton, soon after the first automobiles came into 

 Durii thi time the industry has grown t" large pro- 

 portions and several hundred men art.- now employed in the 



local f; in tl"~ line of business. 



* * * 



I ambertville is to have another rubber factory— a tire 

 making concern — if negotiations now under waj do not fail. 

 Thosi interested in trying to get the company to Id : 

 there will not for the present divulge its name. 



A aj; # 



Another raincoat company, The Trenton Co., has been 

 formed in tins city. Tin- members of the firm are Daniel .1 

 Madden and Alfred Schragger, and their plant will in- at 226 



•ami JJS South Warren street. 



* * * 



Some interesting facts pertaining to the rubber industry 

 in New Jersey are set forth in the advance sheets of the 

 report of the State Bureau of Industrial Statistics. The re- 

 port covers the field up to the first of 1914 and compares con- 

 ditions of 1913 with those of 1912. The rather unusual fact 

 is set forth that there was less capital invested in the in- 

 dustry in 1913 than there was in 1912, yet far more goods 

 were manufactured. 



Following are some excerpts from the report: 



Number of factories engaged in hard and soft rubber man- 

 ufacture, 56. 



Capital invested in 1913, $30,005,296- a decrease of $809,698, 



or J.ti per rent., from that of 1912. 



The value of stock used in 1913 was $25.308.839 — an in- 

 crease of $444,079, or 1.8 per cent., over 1912. 



The factorj selling price of goods made in 1913 was $42.- 

 544,723 — an increase of 10.4 per cent, over the previous year. 



Persons employed in the trade were: Men. 8,125; women. 

 1.326: children. 169; total, 9,656. This represents an increase 

 of 785 over the previous year. 



The averag< yearly earnings of employees in 1913 was 

 1 >.7 — an average increase of 4 per cent, over 1912. 



THE COX AUTOMATIC LOAD REGULATED AIR SPRING. 



rins air spring performs the function of the present leaf 

 spring and is so arranged that the air pressure is increased and 

 decreased automatically in accordance with the load. 



The main features are a spherically formed collapsible 

 bulb with integral shanks, one solid and the other hollow, a 

 pair of conically formed plungers, an auxiliary air reservoir 

 and a pressure regulator. The bulb, or Air Cushion Spring 

 is fabricated throughout and its construction i- similar to that 

 of the pneumatic tire. It is positioned between the pair of 

 •conically formed plungers, one of which is bolted to the axle 



and the other to the chassis. I pring 



via the hollow shank to the air reservoir. An air pump at- 

 tached to the motor pumps the air into the high pressure tank 

 which it passes through an air pressure 

 regulator to tin low pressure reservoir and air spring, but 

 only as demanded by the load. When the load i- removed 

 the air pressure n automaticallj i the then 



surplus air. 



The resiliency of the Cox Air Spring when compared with 

 the steel spring may be mi Ij by the 



difference in the resiliency of the pneumatic tire and the solid 

 tire, consequently the up-keep of tin duced by 



quieting the d holding tin- tire firmly to the 



roadbed. The inventor believes that the experiments tried 



ifferent weight vehicles, including fivi ton trucks, pi 

 ns feasibility fot treel cars and railroad coa 



Tin panying photograph -hows a front view of an 



!nl. with two of these cushion -prints placed in front. 



i)n a heavy truck they would naturally be used both front 

 and rear, while with a particularly heavy load, four cat 

 Used to advantage at the rear axle. The drawing shown 

 below gives, in the left hand panel, a cross section of the 

 cushion while the right hand panel shows how it is attached 

 to the chas-is and the spring and how it is connected with 

 the air tanks. 



This cushion spring has been thoroughly tested in this 

 country during the last few year- and has also been ex- 

 amined and tested by several companies abroad, namely: 

 The Michelin Tire Co., of Clermont-Ferrand, France; D. 



Napier & Son. Limited, \cton, London: The London General 

 Omnibus Co., Limited, and George Spencer. Moulton & Co., 

 Limited. London. [Thi i i Pneumatic Cushion Co., 2010 

 Broadway, New York City.] 



POP TO SPUD win 



