http://etc.usf.edu/clipart/ Free clipart for students & teachers! Welcome to quality educational clipart. Every item comes with a choice of image size and format as well as complete source information for proper citations in school projects. No advertisement-filled pages with pop-up windows or inappropriate links here. A friendly license allows teachers and students to use up to 50 items in a single, non-commercial project without further permission. http://etc.usf.edu/clipart/i/banner.jpg http://etc.usf.edu/clipart/ This website is CoolIris enabled! You can use the CoolIris browser plugin to view the images on this site in an interactive 3D wall.<br><br><br><br> http://www.cooliris.com/ "A hoisting crane used in building piers, towers, chineys, etc."-Whitney, 1902... http://etc.usf.edu/clipart/14200/14289/crane_14289.htm "An instrument illustrating the expansive force of steam generated in a closed vessel, and escaping through a narrow aperture, said to have been invented by Hero of Alexandria in the second century B.... http://etc.usf.edu/clipart/14500/14514/aeolipile_14514.htm An apparatus used for testing the powers of various electric batteries.... http://etc.usf.edu/clipart/21700/21759/aerial_21759.htm "The air pump is an instrument for removing air from a given space. A closed vessel R is called the receiver, and the space that it encloses is that from which it is desired to remove the air. It is u... http://etc.usf.edu/clipart/25700/25764/air_pump_25764.htm "The air pump is an instrument for removing air from a given space. A closed vessel R is called the receiver, and the space that it encloses is that from which it is desired to remove the air. It is u... http://etc.usf.edu/clipart/25700/25765/air_pump_25765.htm "The air pump is an engine by which the air can be pumped out of a vessel, or withdrawn from it. The vessel so exhausted, is called a receive, and the space thus left in the vessel, after withdrawing... http://etc.usf.edu/clipart/28200/28261/air_pump_28261.htm "The piston rods are furnished with racks, or teeth, and are worked by the toothed wheel a, which is turned backwards and forwards, by the lever and handle b. The exhaustion pipe c, leads to the plat... http://etc.usf.edu/clipart/28200/28263/air_pump_28263.htm Air pump used for taking the air out of a vessel.... http://etc.usf.edu/clipart/35800/35814/airpump_35814.htm "A motor employing the elastic force of air expanded by heat, or air compressed by means of another and separate motor, which is generally a steam engine."-Whitney, 1902... http://etc.usf.edu/clipart/14500/14572/air-engine_14572.htm "A form of air-engine which was invented in 1816 by the Rev. R. Stirling is of special interest as embodying the earliest application of what is known as the "regenerative" principle, the principle na... http://etc.usf.edu/clipart/26700/26703/stirling_air_26703.htm "An apparatus for the exhaustion, compression, or transmission of air."-Whitney, 1902... http://etc.usf.edu/clipart/14500/14574/air-pump_14574.htm A machine, variously constructed, for exhausting the air from a closed vessel.... http://etc.usf.edu/clipart/19300/19319/air_pump_19319.htm "A machine for remobing air out of any given vessel, or forcing it in." &mdash; Williams, 1889... http://etc.usf.edu/clipart/20500/20575/airpump_20575.htm "An altazimuth theodolite of an improved pattern now used on the Ordnance Survey. The horizontal circle of 14 inches diameter is read by three micrometer microscopes; the vertical circle has a diamete... http://etc.usf.edu/clipart/26700/26764/altazimuth_26764.htm "Hearson's machine is cylindrical in form, and is surmounted by two turrets. Internally the cylinder is divided into two compartments by a transverse portion, one being occupied by a rotary blower, an... http://etc.usf.edu/clipart/26700/26755/pneumatic_26755.htm "A muffle furnace, employed for annealing, hardening, and tempering." &mdash;Encyclopedia Britannica, 1910... http://etc.usf.edu/clipart/26700/26740/autoilmffl_26740.htm Babcock and Wilcox Water-tube Boiler, longitudinal section... http://etc.usf.edu/clipart/28600/28685/boiler_28685.htm Babcock and Wilcox Water-tube Boiler, section at AB-front elevation... http://etc.usf.edu/clipart/28600/28686/boiler_28686.htm A bell shaped chamber filled with compressed air to allow divers to surface underwater. ... http://etc.usf.edu/clipart/24400/24453/diving_bell_24453.htm Belleville Boiler... http://etc.usf.edu/clipart/28600/28682/boiler_28682.htm Sir Henry Bessemer invented this furnace that creates "Bessemer steel" by burning carbon out of cast iron.... http://etc.usf.edu/clipart/44500/44565/44565_bess_conv.htm Blocking machine for blocking desings on book covers... http://etc.usf.edu/clipart/28600/28687/machine_28687.htm "An American machine, introduced into England by Mr. Ellis. It consists of an iron cylindrical casing A, open about a fourth part of its circumference (a to b) for admission of air, and an exit pipe B... http://etc.usf.edu/clipart/26100/26103/blowing_mach_26103.htm A galloway boiler, section beyond the bridge.... http://etc.usf.edu/clipart/29200/29213/boiler_29213.htm A lancashire boiler... http://etc.usf.edu/clipart/29200/29214/boiler_29214.htm