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THE INDIA RUBBER \VORLD 



[July i, 1902. 



NEW RUBBER FACTORY EQUIPMENT. 



THE DE LASKI CIRCULAR LOOM. 

 'T^HE machine illustrated herewith is the result of many 

 I years' practical experience in the building of machinery 

 for circular weaving for fabric covered hose, cables, 

 and the like, and is really a marvel of economic and 

 practical construction. The space occupied by it is a circle 4 

 feet 7 inches in diameter, the top 

 ring plate being 3 feet 2 inches from 

 the floor. The machine has the fol- 

 lowing featuies: Segmental dust- 

 proof covers, automatic tension ar- 

 rangements controll- 

 ing each individual 

 thread, and positive 

 gear-driving mechan- 

 ism, the latter insur- 

 ing absolute corre- 

 spondence between 

 the shuttle and warp 

 motions, the same 

 being true of the take- 

 off attachments. The 

 cylindrical rolls be- 

 tween the fabrics that 

 are drawn off are 

 operated by cut gears. 

 Further advantages 

 are that the work- 

 ing parts of the machine are near the floor ; the two shuttles 

 hold three pounds of yarn each, and the warp is taken directly 

 from individual spools placed on " A " shaped creels located 

 below the floor. All sizes of tubular fabric, from Vi inch to 1% 

 inches, triple jacket, can be woven by this machine, and it is 

 further adapted to weaving covering for solid cores, electrical 

 cables, air compressor hose, etc. The loom runs from 69 up to 100 

 revolutions per minute, depending upon the size of the fabric 

 woven. It turns from 500 to 1000 feet of finished fabric every 

 ten hours. The weight of the loom completed is 2,000 pounds- 

 It is manufactured by John Royle & Sons. Paterson, New 

 Jersey. 



A NEW SAFETY STOP FOR RUBBER 

 MILLS. 

 The two illustrations herewith 

 relate to a new automatic device for 

 stopping heavy machinery, particu- 

 larly adapted for use in rubber mills. 

 A safety device of this kind would 

 seem to be something that many mill 

 men have felt the ne- 

 cessity for, and there are 

 few of long experience 

 but can recall numerous 

 instances where, had 

 their mills been equipped 

 with some such arrange- 

 ment, it would have 

 saved life or limb, or 

 perhaps thousands of 

 dollars at the end of a 

 vexatious damage suit, clutch before being put in operation. 



to say nothing of the loss from breakage when heroic measures 

 have had to be adopted to save a workman who was caught in 

 the rolls. 



A positive stop motion is not new. It has been used by lead- 

 ing rubber machinery makers for years, but heretofore the de- 

 vice has been of a character not to commend itself to the user 

 for the reason that careless handling of it, or 

 indeed any use of it, almost invariably resulted 

 in some expensive breakage. 

 When a mill is loaded at the 

 point of consuming the greatest 

 amount of power, is 

 just the time that the 

 necessity for a sud- 

 den stop to prevent 

 accident is more 

 likely to occur. Then 

 a sudden strain, the 

 whole 20 H. P. or more, 

 as the case may be, is 

 thrown on to the 

 clutch and shaft run- 

 ning at say 75 revolu- 

 tions, making a tre- 

 mendous shock, 

 from which some- 

 thing must give way. 

 A 5-inch shaft has 

 been known to bend enough from just such a shock to com- 

 pletely defeat the purpose of the so-called " safety clutch," 

 permitting the rolls to continue revolving. The danger of 

 some injury to the mill by use of this arrangement is so well 

 understood that few superintendents or master mechanics will 

 have them anyway, and those who do will not permit an ope- 

 rator to meddle with them except in the case of threatened 

 serious accident. 



To overcome the objection to the old form of positive stop 

 motion, this new safety stop device was designed, the aim being 

 to accomplish the same thing and avoid the shock, obtaining 

 practically the same result as the I l:— _i 



friction clutch, with greater surety | SBS 



and at much less cost and sacrifice 

 of space on the shaft. 



The character of the new device is 

 so well illustrated in the accompany- 

 ing cuts that a brief de- 

 scription only will be 

 necessary. It consists 

 of very much the usual 

 form of clutch pinion 

 and clutch, the latter 

 made with a h e 1 i c a 

 shoulder on the face. A 

 steel dog is held in sus- 

 pension by a latch, to 

 which is attached a 

 light chain carried over 

 the mill, with a handle 

 or pullattheend, located - 



,. ., ., _ „:h^1o clutch after ITS WORK HAS BEEN 



directly over the middle almost completed. 



