504 



THE INDIA RUBBER WORLD 



[May 1. 1920. 



A NEW THREE-IN-ONE TIRE. 



The ''Luck Botherlcss" tiie claims to provide against rim cuts, 

 blow-outs, punctures, sand blisters, 

 etc., by its ingenious construction. 

 G .^ The inner tube D is enclosed inside 



the fabric skirt B, which bears the 

 rubber tread cushion G and is, in 

 turn, inclosed within protective flanges 

 of steel, fastened with eight bolts to 

 the felloe E of the wheel. These 

 flanges extend from near the bottom 

 of the felloe to 

 above the juncture 

 of the solid rubber 

 tread with the fab- 

 ric skirt. An air 

 space C is provided 



between the flanges A and the fabric skirt 



of the tire, to prevent mud or grit from clog- 

 ging. It also has a tendency to keep the tire ^ 



cool. The beads have an extra heavy canvas, 



covering and are protected by the steel flanges. 



(Luck Tire & Manufacturing Co.. 



Building, San .\ntonia, Texas.) 



tmctive twm grip tread, with a center rib to support the weight 



of the antnmobilc, while on either side there is a row of pave- 



BOTHEHLESS"' 



GAS OR SMOKE MASK. 



A mask of improved construction, intended 

 to protect workmen from gas, smoke, or dusi 

 is made of aluminum and rub- 

 ber, as illustrated. It has an 

 inflated face rim and is fitted 

 with specially constructed spiral 

 tubing so flexible that the nat- 

 ural air supply cannot be cut 

 off by twisting or knotting. 

 The tubing is carried by a belt 

 and the head-piece fastens with adjustable elastic straps. (Im- 

 proved Aluminum Gasco Protector Co., Chicago, Illinois.) 



EXPANDING AND CONTRACTING STOPPER. 



No more unpleasant experiences with corks that du not lit the 

 containers for which they are needed or that break in extrac- 

 tion. The one here pictured is a welcome novelty, indeed. 

 It is made of pure red rubber, molded around a nickel screw, 



traveling be- 

 tween two brass 

 washers, firmly 

 embedded and 

 keyed in the 

 rubber. This 

 screw is swiv- 

 el c d in the 

 lower washer to 

 turn without 

 engaging t h e 

 thread. As the 



screw is turned to the right, the upper washer is brought closer 

 to the lower one, thus expanding the rubber in between so as to 

 enlarge its diameter, as illustrated in the cross-sectional view. 

 The reverse movement forces the washers apart, elongates the 

 rubber, and provides positive contraction, permitting the stopper 

 to be easily withdrawn from the bottle or container. (The 

 Sampson .\ppliance Corporation, 13 East 16th street, New York.) 



A SILVER ANNIVERSARY CORD TIRE. 



The new cord tire herewith illustrated, produced to celebrate 

 the silver anniversary of pneumatic tire production, has a dis- 



"Sampsoh" Adjustable Stopper. 



'""^ 



liii^' 



"KoKOMO Cord" Tire. 

 ment-gripping wedges intended to stop any tendency to skid 

 laterally. The color combination produced by the white tread 

 and gray side walls is one which harmonizes with the finish of 

 anv car. (The Kokomo Rubber Co., Kokomo, Indiana.) 



NOVEL SUB-TIRE. 



A novel sub-tire that slips within any tire casing is made in 

 all standard sizes and is said not only to protect the casing, but 

 to double its life and prevent blow-outs. 



Many automobile users seem to prefer the sub-tire to the 

 uncertainties of retreading. An additional safeguard against 

 injury to inner tubes is said to be provided by the sub-tire, and 



lie general wheel resiliency much enhanced. Although the 

 product is but a new one, the sales now reach $100,000 a year 

 and the rapid growth of the business has necessitated the recent 

 removal of the plant to larger quarters. (Planet Rubber Co., 

 223 East 9ih street, Los .A.ngeles, California.) 



RUBBER SUIT AND SAFETY GOGGLES. 



The diverse operations carried on 

 in the modern industrial factor\' make 

 an insistent demand for adequate pro- 

 tection for the workman. The rubber 

 suit shown here is acid, fire and 

 waterproof, provided with snap but- 

 tons on front and at wrists and ankles. 



The rubber-rinuned goggles are air 





"Protexal" Sd 



and gas tight, held by elastic straps. ( The Safety Equipment 

 Service Co.. 2044 East Xinth street. Cleveland, Ohio.) 



