5(M 



THE INDIA RUBBER WORLD 



April 1, 1921 



sharp, hot tool around the inside edge of the jar this cover is 

 quickly removed. The cover is of the one-piece molded type with 

 large screwed vent opennig elevated to prevent spilled water or 

 electrolyte running back into the cell, carrying impurities with it. 

 This opening is titled with a hard rubber threaded plug, making 

 a tight and neat fit. It can be removed and rci)laccd easily and 

 does not need renewing as the soft rubber plug does. A tight tit 

 around the strap post is assured by the u.se of a hard rubljer 

 flanged gasket shrunk on the strap post and forced down into a 

 well filled with sealing compound. This eliminates leakage; also 

 breakage in transit, due to the elements shifting and striking the 

 sides of the jar. — Universal Battery Co., 3410 South La Salle 

 street. Chicago, Illinois. 



HARD RUBBER HANDLE FOR THE MICRO-TELEPHONE 



The innocent-looking instrument which is the subject of this 

 paragraph is reminiscent of those thrilling scenes at the cinerria 



where the lady seizes with one 

 hand this same hard rubber 

 handle and holds the tele- 

 phone in position for use while 

 she scribbles madly with the 

 (ither hand, writing down the 

 information supposed to be 

 coming in over the wire. The 

 chief difference between the 

 cinema 'phone and the one 

 shown here is that this one is connected with the practical inter- 

 phone device for communicating with different parts of the same 

 building. The hard rubber handle is grooved and turned on the 

 ends in a way to make it fit the hand comfortably. — Federal Tele- 

 Iihone S: Telegraph Co., Buffalo, New York. 



CkA&LK Swiica Desk 'Phone 



THE "ERROR-NO" COPYHOLDER 



One of the newest copyholders for use by stenographers and 

 typists is the "Error-No," arranged with either right or left- 

 hand operating rod. It is provided with a horizontal arm resting 

 on a rubber foot, which insures stability without the necessity for 

 attaching to the desk or table, and permits moving the holder 

 as desired. The roller which holds the copy or note-ibook is 

 also provided with pieces of white rubber tubing which easily 

 grip the paper. — Error-Xo, Inc.. Rochester, New York ; 298 Broad- 

 way, New York. 



TOYS TO CO WITH NURSERY RHYMES 



.\ British rubber company that certainly must have a warm sym- 

 pathy for the whims of children and a keen appreciation of their 



LeKKlDUKKI BiKD 



Hl'MPTV DuMI-TV 



King Swan 



love of the quaint and humorous in toys, has brought out what 

 it calls the "Rubbadubdub Floating Toys." They are made of 

 pure durable rubber, with fast colors and are easily inflated and 

 deflated by means of a valve. Some of the characters are shown 

 here, but the line is being increased, with the aim of providing 

 children with toys of which they will not tire easily. A little 



booklet printed artistically in black and orange on cream-colored 

 paper shows twenty-five of these toys, which are covered by 

 registration of designs and trade-mark and on which the company 



Doctor TIeetle 



Pip 



Teddy Tail 



Pe.sguin 



has applied for patents. Each figure, bird or animal, is pictured 

 over a verse similar to those in "Mother Goose.'' — J, G. Franklin 

 & Sons, Limited, 17 Colverstone Crescent, Dalston. London, E. 8. 



Steel Plate -Attached 



INTEJICHANGEABLE RUBBER HEELS 



This interchangeable rubber heel consists of a light steel plate 

 and a rubber heel grooved on the inside. When signs of wear 

 appear, the left rubber 

 heel is transferred to 

 the right shoe and the 

 right rubber heel to 

 the left shoe. These 

 heels are said to have 

 an increased life of 

 from one to two 

 months because they 

 always keep square. 

 The leather sole of the 

 shoe wears out more 

 evenly and keeps its 

 shape better with this 

 style heel. 



The method of at- 

 taching is not compli- 

 cated. The repairer 

 removes the leather 

 heel in the usual man- 

 ner. The remaining 

 lift, however, must be 

 scoured absolutely 

 smooth and flat, so that 

 the cupped edge of the 

 heel will make a tight 

 edge when attached. 

 The lieel, with the plate 

 already in it, is placed 

 in position and a few 

 taps of a hammer drive 

 tlie plate into the 

 leather. The plate is 

 then removed and, sep- 

 arated from the rubber 

 heel, is attached with 

 nails. The wings of the 

 plate fit into grooves in 

 the rubber heel with a firm grip. The outer edge of the rubber 

 heel IS trimmed, then the rubbers are interchanged and any slight 

 excess of rubber or leather is removed, thus insuring an equal fit 

 on either shoe. 



Wings Fitted Into Grooves 



Stringing the Fastener 



