JiNE 1, 1920.] 



THE INDIA RUBBER WORLD 



591 



THE "WILLSON" SAFETY GOGGLE. 



A safety goggle with novel provision for the renewal of the 

 ruhber tubing which binds tlie edges coming in contact with the 

 face of the wearer has 

 aluminum cups with ser- 

 rated edges. Over thi 

 serrations the rubber 

 tubing is fitted by means 

 of short slits. A short 

 piece of rubber tubing is 

 slipped over the leather 

 strap which connects the goggles over the nose. The lenses 

 of these goggles are set in a frame so designed, it is claimed, 

 that if the glass is broken it must fall out instead of in. Besides, 

 the lenses in their frames may be removed by sliding forward the 

 clamp to which the elastic head-bands are attached. (Willson 

 Goggles Inc., formerly T. A. Willson & Co.. Inc., Reading. Pa.) 



A VALVE THAT LOCKS THE AIR IN THE TIRE. 



FETV Gogol 



The "Air Lock" tire valve 



IR.LOCK 



r 



is so constructed that it locks the 

 air in the inner tube for an in- 

 definite length of time, until the 

 tire suflfers a blowout or puncture. 

 This valve may be used with any 

 cap, nut, or cleat. The use of a 

 new inner tube is recommended, 

 but an old one which is known not 

 to leak may be used. It is claimed 

 that a permanent degree of pres- 

 may be maintained within the 

 tire by means of this valve, which 

 tends to increase tire life and 

 ^ -_, ^ mileage. The centers of these 



gi^jtji^^^,^,,,^; valves are interchangeable. Five 



standard sizes are available, for 

 wire, disk, and artillery wheels — 

 2, ZVz. 3, 3^4 and 4-inch. (The 

 Gritifin Manufacturing Co., Inc., 113 State street, Boston, Massa- 

 chusetts.) 



VACUUM CUP LADDER STAY. 



The vacuum cup principle has been eniploytd in w.iikni^ .>ut 



this safety device for holding lad- 



ders in position. A clamp ol 



malleable iron, which is adjustalilc 



fits around the lower rung of ;ui\ 



ladder. Through this clamp is in 



serted a rod, also of mallcaM' 



iron, whose lower end is cut on : 



bevel of eight degrees, so that n. 



matter at what angle the laddn 



is placed, the safety stay cxerls .i 



direct downward pressure. Tin 



bottom of the rod is adapted ioi 



holding a rubber suction cup or 



steel point, depending on tin 



nature of the surface on which i; 



is to be used. When the device n 



not in use, it may be moved omi 



to one side of the ladder an( 



folded up out of the way, if it i> 



not convenient or desirable to re- maxv 



move it entirely. (Maxwell 



Safety-Ladder-Stay, 101 West 43d street 



New York City.) 



coated with rubber. The weight of the material varies accord- 

 ing to the purpose for which it is intended to, be used. The 

 trade mark has just been registered in the United States. (The 

 Dnrato.x Company, Newark, New Jersey.) 



RUBBER MATS BEHIND THE SODA FOUNTAIN. 



A new mat, made in one size, color and thickness only, has 

 been designed for use behind soda fountains. It is made with 

 stout rubber disks on the bottom, which hold it one-quarter of 

 an inch off the floor, permitting free drainage beneath. The 

 top layer is of line, flexible mat stock, corrugated to give a 

 lirm footing. Perfora- 

 tions in the mat permit 

 the drainage of any 

 liquid spilled upon it. 

 The mat is 18 by 24 

 inches. (United States 

 Rubber Company, New 

 York City.) 



RUBBtR BUMPER 



Flat Tire Alar\ 



"DURATOP" RUBBER-COATED FABRIC FOR AUTO TOPS. 



\ new material for automobile and carriage tops, curtains, 

 c, is "Duratop," which has a heavy woven cotton backing 



IT WARNS WHEN 

 TIRE IS FLAT. 



A unique device for 



warning the automobile 



driver when his tires are 



becoming flattened is 



shown in cross-section in 



the diagram at the right. A winged nut which forms the end 



of the valve stem is embedded in a ball of rubber. Whenever the 



air inside the inner tube becomes reduced as much as 

 fifty per cent, this ball 

 causes a slight bump as the 

 tire revolves. (Columbus 

 Rubber Mills, successors to 

 Tomah Rubber Corporation, 

 Milwaukee, Wisconsin.) 



THE "NOKUT" TIRE PLUa 



A new plug for tires that 

 have become punctured em- 

 phasizes the following 

 features indicated in the 

 illustration: (1) beveled 

 edge preventing cutting of 

 lire; (2) rubber anchored and chemically welded to metal cores; 

 (3) rubber packing unites cap with base, preventing metal 

 from touching tire; (4) arched cap to conform to tire surface; 

 (5) no open slot to leak; (6) inserting point, with rubber 

 cement, is easily forced into puncture; (7) threaded stem of 

 strong steel so that "Nokut" rubber can be clamped solidly 

 ithout stripping stem. (Stevens & Company, 375 Broadway, 

 .. w York City.) 



A REINFORCED HEEL AND NEW HALF SOLE. 



A new non-skid, reinforced rubber heel and sole 

 •ire illustrated herewith. The heels are made riglit 

 .iTid left and the outside corner is reinforced with 

 1 lieel-plate designed to give additional rubber 

 where most people find the greatest amount of 

 wear. The "Paris" heel is made in two sizes only. 

 \ and B, and has a concave under surface and a 

 fiat upper surface. It is designed to fit only 

 French heel shapes. 



The "Portland" non-skid half-sole is made with 

 both plain and corrugated liall surface and in- "Paris" 



dudes the original feature of the shank edge re- Hekl. 



inforced with plies of canvas to hold the heads of the nails. 

 Patents are pending. (Portland Rubber Mills, Portland, Oregon.) 



