File:The Emporium of arts and sciences (1812) (14579610068).jpg

Identifier: emporiumofartssc02coxe (find matches)
Title: The Emporium of arts & sciences
Year: 1812 (1810s)
Authors: Coxe, John Redman, 1773-1864, ed Cooper, Thomas, 1759-1839, ed
Subjects: Industrial arts Technology Technology
Publisher: Philadelphia : published by Joseph Delaplaine Philadelphia : Kimber & Richardson
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and the National Endowment for the Humanities

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periment madeupon a point so truly important, and I have only to re-quest the favour of any one who pursues it, to let meknow the result, that I may communicate it to the public. Before I conclude, I shall only add, that the pith ofthis plant, which is very considerable, is, without excep-tion, one of the most combustible materials I know. Apiece of seven or eight inches in length, from one of thebranches, perfectly dry, catches fire like tinder, andburns down in less than a minute. Whether experimentmay show it to be useful as a match, in blasting rocks,instead of the present kind employed, I know not; proba-by we may find it useful in this, as well as in otherpursuits. John Redman Coxe. Philadelphia, October 5, 181&. NO. 5. Description of a New Machine for Raising Water toany height. By I. B. (With an engraving.) Baltimore, August 25, 181S.£jIR—If yah think the machine, of which I send you the description and sketch, deserving any merit on account of h/./rr A ,///// //fry///.
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Ti&6oix,£ J^ Emporium or Arts io Sciences TbZ.S.pl.l. for Raising Water. . 27 its simplicity, you are welcome to make it public by meansof the Emporium. Though both the principles of it areold enough, yet I never have seen them combined before. LB.Dr. Coxe. AB (plate I. fig. 1.) is a box made of thin planks,which, together with its two tubular arms BC and BD, ismoveable about the centres Gr and H. At the extremity ofeach arm is a hole, as E, ofsurh a size that the quantity ofwater discharged by both, shall be less than that which fallsthrough MN: the tube AB will therefore be constantly full.H is the axis of the whole, fastened to the interior of AB.At I is a perpetual joint, with the upper axis of which isconnected the cylinder ST, with a tube coiled round it, soas to form a screw of Archimedes. The cylinder is pre-vented from slipping downwards by a shoulder on itsaxis at a, and is moveable on the centres a and b. The action of the machine, which is easily understood,is as foll

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