File:Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869) (14597433337).jpg

Identifier: machineryprocess00barn (find matches)
Title: Machinery and processes of the industrial arts, and apparatus of the exact sciences
Year: 1869 (1860s)
Authors: Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889
Subjects: Machinery Scientific apparatus and instruments
Publisher: Washington, Govt. print. off.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
dvantageouslyto small industrial operations. The furnace in this engine is a cast-ironcylinder lined with fire-brick. Immediately over the furnace, andapparently formed in the same casting, is the working cylinder, smallerin diameter than the furnace and open above. The piston rod is keptvertical by means of a guide, and two connecting rods attached to thepiston, one on each side of the proper piston-rod, are attached to balancelevers which are united at their opposite ends by a cross-bar, to themiddle of which is attached the connecting rod which turns the crankof the main shaft. The balance levers are pivoted in supports whichare secured to the working cylinder itself, and they carry, also, a pair ofrods which operate the piston of the supply cylinder. The supply cyl-inder is immediately under the working shaft, and is as convenientlynear the furnace as practicable, standing upon the same base with it.The furnace is air-tight, and the air supply is forced into it beneath the Fig. 2.
Text Appearing After Image:
ROPERS HOT-AIR ENGINE. grate, passing through the fuel, and so upward into the working cylin-der. Provision is said to be made to divide the air current in such a4 i A 50 PARIS UNIVERSAL EXPOSITION. manner as to allow a portion of it, at pleasure, to enter the furnaceabove the fuel, for the purpose of regulating the rapidity of combustionand the temperature of the charge in the cylinder, but the contrivanceby which this is effected was not exactly understood. The exhaust airwith the products of combustion is discharged through a pipe commu-nicating with the chimney of the building. The main shaft carries aheavy fly-wheel to maintain the motion during the downward stroke anddmiug the period of greatest compression of the supply. The sameshaft carries a pulley by which the power is applied. The whole machineoccupied on the ground a space of about five or six feet square. Thepower could not be ascertained. An engine so similar to this as apparently to be identical with it wasseen in Lond

Note About Images