File:Handbook for architects and builders (1898) (14777267354).jpg

Identifier: handbookforarchi14illi (find matches)
Title: Handbook for architects and builders
Year: 1898 (1890s)
Authors: Illinois Society of Architects
Subjects: Architecture Building Architects
Publisher: Chicago
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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s weresomewliat dished, or made concave in form,causing the belt to assume the form of ashallow trough. The conveying belts them-selves are of canvas duck, woven solid; orof a number of plies varying from three toeight, stitched or cemented together with acomposition of rubber, and known as rubberbelts. Canvas belts are plain duck, oi- treated relatively high speeds, from 300 feet to SOOfeet per minute—with consequent large con-veying capacity. The most serious objection to belt convey-ors, and the one which has prevented theireven more general use, is the lack of dura-bility of the belts, their liability to destruc-tion from accidental causes, and the expenseof their frequent renewal. The most elementary form of link or chainbelt conveyor approximating most nearly thebelt, consists of flat steel or wooden slatsattached between two chains, forming a con-tinuous platform or apron. In successivemodifications of this the overlapping gravityliucket carrier is reached. A plain, flat-top.
Text Appearing After Image:
Freight Carrier with some preservative and painted withsimilar compound. For many kinds of serv-ice they meet every requirement. For severeduty, where the canvas fabric, which is thestrength of the belt, must be protected asperfectly as possible from dust, moisture,and cutting or wearing action, the rubberbelts are preferable, and are usually made steel apr<in has been used and the slats bentin arcs of the diameter of the head wheels;in passing around these wheels the scraperor chute may be placed close to the apron,thus adapting it to handle such sticky mate-rials as clay, sugar, etc. By beading thecarrying slats at each edge, they are greatlystiffened and their ability to carry heavy 245 E. C. ^ R. M. SHANKLAND CIVIL ENGINEERS THE ROOKERY. CHICAGO Steel ana Reinrorcea Concrete Builaing Construction. Founaations,Dxaminations and Reports TELEPHONE HARRISON 7021 H. M. Byllesby & Company Engineers ManagersDESIGN CONSTRUCT OPERATE Artificial Gas Systems Natural Gas Systems Street

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