312 



THE INDIA RUBBER WORLD 



[June i, 1904. 



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stop the beaches bathing adt ? Why don't he stop those stage 

 girls dancing with short skirts already ? So he is able to stop 

 those I stop showing my legs, ain't it?" 



The sale therefore goes on and it is large. ==Another sur- 

 prise toy is a little rubber Easter egg out of which pops a rab- 

 bit, while still another, designed for sale at the St. Louis Expo- 

 sition, is a rubber ball in which is concealed the head of an 

 army mule. [The Baumann Rubber Co., New Haven, Conn.J 



HARD RUBBER CATHETER SCALE. 

 The illustration represents (in reduced size) a hard rubber 

 Catheter Scale, the exact dimensions of which are 5^X3/^ 



inches. The 

 perforations, of 

 course, are rela- 

 tively larger in 

 the full sized 

 gage. One fea- 

 ture not shown 

 in the illustra- 

 tion is the se- 

 ries of figures, 

 indicating di- 

 ameters according to the English and Fiench scales of meas- 

 urement. These gages may be obtained with the imprint of 

 any firm desiring to market them. [Hanover Rubber Co., 

 Limited— George Borgfeldt & Co., American agents, New 

 York.] 



TIRE REPAIR PLUG WITH OBLONG STEM. 

 The Cox improved plug, which is illustrated herewith, is rec- 

 ommended as a certain cure for punctured or cut single tube 

 or double tube tires. The 

 stem is made oblong, in order 

 that it may be cut to fit all 

 kinds of cuts and punctures. 

 The inner surface of the head 

 is corrugated, in order that it 

 may not expel the cement be- 

 tween the wall of the tire and 

 the head of the plug. The 



stem fills up the cut or puncture, holding the paidi lirmly in 

 place. United States patent No. 733,014, issued July 7, 1903. 

 to David H. Cox. Jr. [Cox & Spencer. Ra'iway, New Jersey.] 



RUBBER COVEHS FOR TUNING PINS. 

 It is said that the average piano needs tuning as often as 

 once in three months. The reason for this is the unprotected 



steel pins known as " tuning pins." To protect them there has 

 been invented a neat rubber coverlet such as is shown in the 

 accompanying illustration. This fits over each row of pins, 

 being socketed to one of them, and effectually insulates the 

 pins from heat, cold, or dampness. It is said that these cover- 

 lets have been known to keep the original tone of a piano up 

 for as long as three years. It is estimated that there are about 

 4,000,000 pianos in the United States at the present time, and 

 that the annual sale is for about 125,000 instruments. There 

 are some, no doubt, who would claim that all of the above in- 

 struments are out of tune. Experts, however, figure that 80 

 per cent, of those in use are in that state, and without knowing 



it need the rubber coverlets. It would seem as if this were a 

 new and fertile field for a large and profitable business in pre- 

 venting rather than curing instrumental vagaries. [George R. 

 Percy, No. 25 Pine street, New York.] 



EVANS VACUUM CAP, FOR FAILING HAIR. 

 This device is based upon the theory that loss of hair is due 

 to impeded circulation of blood in the scalp, and is to be 

 remedied only by stimulat- 

 ing the circulation, and 

 thus supplying the natural 

 food for hair growth. The 

 invention is the result of 

 attempts to stimulate cir- 

 culation without the irrita- 

 tion caused by massage, 

 blistering, and other meth- 

 ods practiced in the past. 

 The central idea of the de- 

 vice is the production of a 

 vacuum over the scalp, for 

 which purpose is used a 

 nickel-plated helmet, lined 

 with a rubber diaphragm, 

 which, when properly ad- 

 justed, fits airtight on the 

 head, the diaphragm cov- 

 ering the upper portion of 

 the forehead, and resting 

 above the ears. The helmet is suspended from a rod attached 

 to the back of a chair, enabling the occupant to adjust it con- 

 veniently to the head. To the seat of the chair, and within 

 easy reach, is an exhaust pump, which, when connected to the 

 helmet and put in operation, creates a vacuum above the head, 

 drawing the blood to the scalp, and gradually, under daily use, 

 improving the circulation. An ordinary chair can be used. 

 [Evans Vacuum Cap Co., Fullerton building, St. Louis.] 



QUICK VULCANIZING DENTAL GUM. 

 The usual practice in the handling of dental gum for the 

 manufacture of tooth plates by the thousands of dentists who to- 

 day do such work is — that is, as far as vulcanizing goes — to take 

 about half an hour in getting the heat up to the required tem- 

 perature, then to hold it there from an hour to an hour and a 

 half. The time varies somewhat according to the type of vul- 

 canizer used and the compounds employed. When the cure is 

 finished the vulcanizer is cooled down gradually, as too quick 

 cooling would fracture the teeth. Directly in this connection 

 The India Rubber World is advised that a new quick vulcan- 

 izing dental rubber has been invented which reduces the time to 

 15 minutes, the temperature being 320° F. These rubbers are 

 said to be made in all colors, including pink ; are described as 

 lighter in weight, stronger, and very easily handled by the 

 dentists. The formulas have been prepared by Arthur C. 

 Squires, of Akron, Ohio, and the goods are to be made by 

 the Akron Dental Rubber Co., the incorporation of which 

 was noted in the last issue of this Journal. 



Money at Para. — For want of small change, tram tickets 

 are circulating as money at Belem [Para], although there seem 

 to be lots of nickel in the local treasury, waiting, we suppose, 

 for a good fire to help put it into circulation. The Jornal says 

 that small change is " badly wanted in the rubber districts," 

 though what use it can be in places where an egg costs \% and 

 a chicken 20$ apiece is hard to say. — Brazilian Review. 



