132 



THE INDIA RUBBER WORLD 



[JANUARY I, 1904. 



The Dunlop Pneumatic Tyre Co., Limited (London — 

 works at Birmingham) made exhibits at both the National 

 and Stanley shows. The chief innovation for 1904 consists in 

 a new and improved non slipping cover. Experience having 

 proved the liability of the crevices in the tread of a tire to fill 

 up, and of the design to become obliterated, the Dunlop com- 

 pany have decided to furnish a non slipping tread of longitu- 

 dinal ridges, reinforced by transverse projections which pre- 

 vent these ridges splaying apart and quickly wearing off. This 

 effect is produced by molding the words " The Dunlop Tyre " 



DUNLOP" 



WELCH 



RIM- 



THE NEW DUNLOP TIRE. 

 [Made also with " Clincher " Attachment.] 



at intervals round the tread of the cover, the letters of the 

 name serving as the transverse projections which hold the 

 ridges in position and minimize their wear. Besides produc- 

 ing an effective non slipping tread, a new means of identifica- 

 tion of Dunlop tires is produced which may serve the company 

 a good purpose in view of the new imitations of their tires 

 likely to result from the expiration of their patents in the near 

 future. Illustrations are shown here of a Dunlop cycle tire in 

 each of the two types — " Dunlop-Welch " and " Bartlett '• 

 methods of attachment, one using wires and the other beaded 

 edges in the tire cover — with the new tread markings. 



The price of a pair of Dunlop cycle tires (cover 28'Xi^") 

 complete is now £1 5*. [=$10.95] ; m '898 it was ,£4 [=$19.45.] 

 The price of an outer cover has declined meanwhile from 30 

 shillings to 17 shillings 3 pence. 



The Dunlop tire was also shown in special makes (or motor 

 cycles and automobiles, together with various rubber access- 

 ories for cycling and automobiling. 



The Dunlop inner tube is now molded in a circle, to the end 

 that it may be at even tension at all points; the inner circum- 

 ference is therefore not wrinkled nor the outer circumference 

 stretched in putting the tire tube in place. 



The company thus refer to an American invention for the 

 curing of tires: " In 1901 a specialized method of manufacture 

 was discovered, and the patents purchased by the Dunlop Tyre 

 company. After making extensive tests in all countries and 

 climates, over a period of 18 months, the company adopted this 

 scientific method by which tire covers are made by patented 

 machinery." 



The Avon India Rubber Co., Limited (Melksham, Wilt- 

 shire). — The "Avon "single tube motor tire, described as be- 

 ing in construction " similar to the American single tube tires" 

 —though more durable— and adapted to "any American sin- 



gle tube motor rims," but fitted with an English (Lucas) valve ; 

 molded under great pressure; Egyptian cotton used ; attached 

 to rim with 5 screws; made in one size only — 28 // X2^ // . Also : 

 Inner tubes for motor tires, in red and gray rubbers, molded in 

 circular form ; the " Coronation " solid rubber motor tire, mold- 

 ed and vulcanized in circular form; "Lovelace" non slipping 

 tire treads; special vulcanizing process for pneumatic motor 

 tires. 



The North British Rubber Co., Limited (Edinburgh). — 

 Exhibited at both shows the " Bartlett-Clincher " tire, for 

 cycles, motor cycles, and automobiles. Special attention was 

 called to the motor cycle 

 tire, constructed with a 

 view to the peculiar 

 needs for strength and 

 resiliency in the equip- 

 ment of this new class 

 of vehicle. An illustra- 

 tion is given here of a 

 section of the "A Won " 

 tire for motor cycles. 



The Midland Rub- 

 ber Co., Limited 

 (Birmingham). — " Mid- 

 land " and " British " 

 detachable bicycle tires, 

 fitted with endless wires, under the Dunlop-Welch patents; the 

 " British " tire also made with beaded edge, under the Dunlop- 

 Bartlett patents. Also: "Midland" pneumatic motor cycle 

 tires. The tires are described as being made by " a patented 

 vulcanizing process" — evidently meaning the American inven- 

 tion controlled in England by the Dunlop company. 



The Clifton Rubber Co., Limited (Birmingham). — Ex- 

 hibited tires manufactured under license from the Dunlop 

 company — the " Wapshare," fitted with endless wires, and the 

 " Clifton," with beaded edges, in place of the old Wapshare 



A WON 

 MOTOR 

 CYCLE 



TYRE 



NORTH BRITISH CLINCHER TIRE.' 



THE WAPSHIRE" TIRE. 



tire attachment, where the wires extended through the rim and 

 were fastened by screw nuts. Also: The " Clifton " detach- 

 able inner tube — a new article — made in a straight length, with 

 two closed ends which interlock by inserting one within the 

 other. It appears to possess special convenience for motor 

 cycles, being removable from the outer cover without taking 

 off the wheel. 



Le Paris Tyre Co., Limited (London). — " Le Paris " patent 

 double tube — not detachable — bicycle tire, with or without 

 puncture proof band, especially for path racing. For 1904 sin- 

 gle tube and detachable motor tires are announced. 



