File:Cassier's magazine (1911) (14740936396).jpg

Identifier: cassiersmagaz401911newy (find matches)
Title: Cassier's magazine
Year: 1891 (1890s)
Authors:
Subjects: Engineering
Publisher: New York Cassier Magazine Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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t before clearing it away. If then the problem of dust ex-traction is to be properly solved,means must be adopted to catch thedust particles as near as possible atthe line of their evolution, where DUST EXTRACTION IN COTTON MILLS 58; the stripping brush impinges on thecard cylinder. An early effort (Fig.5) made in this regard proved it tobe the remedial line of action. Anappliance was designed to cover thespace immediately above the strippingbrush by a full-sized hopper, withtrunk connected to an enclosed ex-haust blower erected on a girder ofthe mill. The blower was turneddirectly from the line shaft at a speed of 1,500 revolutions per minute,and created a draught which leftno doubt as to the possibilities ofextracting dust from carding engines.Further progress resulted in theproduction of a swing hopper adoptedto each line of cards and so leveredthat it could be applied to either themain cylinder (Fig. 6) or the doffer(Fig. 7) of the carding machine.One hopper thus suffices for some
Text Appearing After Image:
-PIONEER DUST EXTRACTOR AS USED IN STRIPPING MAIN CYLINDER 586 CASSIERS MAGAZINE B • u I if * i 4BSPH *M feu- in \ 1 EflftlL. WaS \ JfM^8Baa*BIMM iJB^i Wk m • w 1 Ik Wi) *? ■:< J n^ H\y ■«»« FIG. 7. EXTRACTOR AS USED FOR DOFFER CYLINDER twenty or thirty cards, according tothe length of the line. The hopperis fixed to a movable carriage (Fig.8), which, by grooved pulleys, runson side rails attached to the dusttrunk. The operation of this extractor—the Pioneer—will be readily under-stood. The strippers place the brushin position and draw the hopper im- mediately over the dust-generatingline. At the moment the extractor isplaced opposite the card under treat-ment, a valve on the dust trunk isautomatically opened, and the fancurrent begins to draw off the dustas it is generated. The exhaust fan(Fig. 9), about 15 inches in diam-eter, and making 1,600 revolutionsper minute, is erected in the main DUST EXTRACTION IN COTTON MILLS 587 trunk as nearly as convenient to anextern

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