November 1, 1919] 



THE INDIA RURRER WORLD 



87 



such as benzene, (.S. I. Peachey, 5 Yew Tree Road, Davenport 

 Stockport, Chester. British patent No. 129,826.) 



Puncture Sealing Fluid consisting of a binding agent of rub- 

 ber, sugar, and sulphite-cellulose lye or pine-tree essence or 

 both. Earthy constituents, such as magnesia or talc, ground 

 rice, or a solution of casein may be added. (P. Wariiiund. 

 Zurich. Switzerland. British patent No. 130,342.) 



THE FRENCH REPUBLIC. 



Process for Insul.\tion of Electrical Conductors whereby 

 enameling of the metallic conductor is substituted for the usual 

 coating of tin for the protection of the insulation from the ac- 

 tion of the copper conductor with the sulphur in the insula- 

 tion. (A. Grammont. French patent No. 490,890.) 



Vulcanization. New accelerators for vulcanizing rubber. (S. 

 J. Peachey. French patent No. 490,965.) 



KAOLINITE. 



French industry is making large use of Kaolinite in the manu- 

 facture of rubber and other plastic materials. For this purpose 

 a special quality of extreme whiteness and fineness, absolutely 

 free from lead and iron is prepared. The specific gravity is from 

 2.30 to 2.40. It is recommended as a substitute wholly or in part 

 for zinc oxide. 



A CORRECTION. 



Donald F. Cranor, author of the paper on "The Effect of Or- 

 ganic .\cceleration on the Vulcanization Coefficient," read at the 

 September meeting of the American Chemical Society, corrects 

 the report of his paper printed in these columns in the October 

 issue, as follows : 



For the purposes of investigation the author deliberately select- 

 ed a sample of brown crepe having unusually poor vulcanizing 

 properties because such a sample best served to bring out the 

 point which it was desired to make. The statement reported, that 

 brown crepe will not cure satisfactorily without the use of 

 accelerators, is not justified in view of the fact that many brown 

 crepe lots are excellent and have good curing properties. Mr. 

 Cranor discussed the action of the addition product of dimethyl- 

 amine and carbon disulphide instead of thio-carbanilide as re- 

 ported. 



NEW JERSEY CHEMICAL SOaETY PLANS INDUSTRIAL SURVEY. 



At a meeting of the New Jersey Chemical Society held in 

 Newark October 13, 1919, the plan of asking the State Commis- 

 sioner of Labor to promote an official survey of state industries, 

 and particularly the chemical industries, was considered favor- 

 ably. The object is to make known to the general public the ex- 

 act facts as to the natural resources of New Jersey and the 

 extent and character of its chemical industries, and thereby to 

 advertise New Jersey as a chemical center and encourage the 

 consumption of American made, and especially Jersey made, 

 products. 



RUBBER AND FABRIC SHOES POPULAR. 



Manufacturers of part-rubber shoes are preparing to increase 

 their competition against leather and part-leather shoes next year. 

 Rubber and fabric shoes have found many new friends this past 

 season among both men and women. They have been more attrac- 

 tive and serviceable than formerly and the prices make them 

 especially desirable. Very high-grade tennis shoes intended to 

 rival leather footwear at lower prices will be brought out next 

 summer. Heavy work shoes of rubber, fabric and fibre are rap- 

 idly finding favor, so that, the two extremes having been supplied, 

 a serviceable shoe for wear at any time should complete the 

 chain of good footwear provided by the rubber industry, at 

 reasonable prices. The high cost of leather shoes also seems likely 

 to increase the wearing of rubbers by women in order to protect 

 such expensive footwear. 



LABORATORY APPARATUS. 

 COMBUSTION AND DEFLAGRATION SPOON. 



A SIMPLE device or laboratory tool is the comliined combus- 

 tion and deflagrating spoon shown in the illustration. The 

 container or spoon is not attached but can be transferred to either 



(f 



=^ 



Combustion and Deflagr.-\tion Container. 



ring of the device, permitting the use of the spoon either vertical- 

 ly or horizontally. (Central Scientific, 460 East Ohio Street, Chi- 

 cago, Illinois.) 



GAS HEATED GLASS CUTTER. 



A very convenient tool for laboratory use has been devised by 

 Lieutenant K. H. Partner, formerly of William Jewell College. It 



Parker Glass Cutter. 



is known as the Parker glass cutter. In general appearance it 

 resembles a hollow gas-heated soldering iron. It is attached to 

 the gas supply by means of rubber tubing, the flow being ad- 

 justed until the flame strikes back. When 

 sufficiently hot the cutter is used to lead a 

 crack in the glass in any direction. A deep file 

 cut serves as a starting point for the crack. 



SCREW CLAMP. 



The illustration shows an improved screw 

 clamp, closed, that furnishes a fiat bearing sur- 

 face. It is particularly effective and convenient 

 (Central Scientific Co., 460 East Ohio street, 



AUTOMATIC BURETTE. 



A simple automatic burette is shown in the accompanying 

 figure. It is especially useful with solutions which are reduced 

 on extended exposure to the light. At the end of a series of 

 titrations the liquid can be run back into a 

 bottle of dark colored glass. With ordinary 

 solutions it will also be found useful especially 

 in the presence of dust or fumes. It has the 

 advantage of being filled from the bottom and 

 regardless of the amount of solution used it is 

 unnecessary to wait for the tube to drain. 



It is made from an ordinary burette. The 

 glass stop-cock is replaced by a larger cock, 

 the lower end of which reaches to the bottom 

 of the bottle. The original stop-cock is 

 lengthened by a short piece of glass tubing, 

 sealed to the burette tube just above the larger 

 cock and bent to form a faucet. The top of 

 the graduated tube is fitted with a small tube 

 to which is attached a piece of rubber tubing, 

 which is used to draw up the liquid into the 

 burette to any desired level, a. small curved 

 tube through the stopper regulates the pressure within the 

 bottle. ("The Chemist-Analyst.") 



Rubber goods were included in the load of the first 

 Handley-Paige airplane to engage in the parcel service between 

 Paris and London. The plane left Hounslow at noon on Septem- 

 ber 2 and the goods were delivered to the companies in Paris at 

 6 o'clock that afternoon. 



