A couple of nice precision engineering services pictures I located:
Image from page 1147 of “Electrical world” (1883)
Image by Internet Archive Book Photos
Identifier: electricalworld43newy
Title: Electrical world
Year: 1883 (1880s)
Authors:
Subjects: Electrical engineering
Publisher: [New York McGraw-Hill Pub. Co., etc.]
Contributing Library: Engineering – University of Toronto
Digitizing Sponsor: University of Toronto
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Text Appearing Just before Image:
or belt ordirect connection rotary converters, motor-generator sets, oil-in-sulated and air-blast transformers, direct-current and alternating-existing railway motors and controllers, single and polyphase in-duction motors of continuous and variable speeds, direct-present motorsof numerous kinds, including motors for variable-speed service fromsingle and double-voltage circuits, switchboard apparatus, ammeters,voltmeters, wattmeters, synchroscopes, power aspect meters, circuit-breakers and switches, several of them electrically operated portableinstruments, instruments of precision, potential regulators, and innu-merable other forms of auxiliary apparatus and instruments. Thealternating-present, series-wound, single-phase crane motors, sim-ilar in sort and basic building to the single-phase railwaymotors exhibited in the Transportation Developing, and the new West-inghouse Unit Switch Technique of Several Manage are also to heseen in this section. The spectacular higher-tension sign, utilizing a
Text Appearing Following Image:
FIG. 5.—BRAKE E.XHIBITS, TRANSPORTATION Building. brake which is now so a lot in use. The method at present gen-erally adopted when two pumps are employed on 1 locomotive isshown, and 1 of the novel characteristics of the rack is that all valvesare placed ig duplicate, a single sectioned so as to show the internalworking mechanism, and connected to the valve in use in such a ELECTRICAL Globe and ENGINEER. Vol. XLIII, No. 24. manner that it moves as the regular valve is operated. The opera-tion of the various valves is thus readily studied. The Westinghouse friction draft gear also is shown in section,with a machine particularly made for testing it in operation. Theavailable power which can be e.xerted on the draft gear approximates2,000 pounds. A triple valve testing rack is presented to show themanner in which this device is now becoming installed in several rail-road shops. Sectional components also are shown of the other apparatusof the Westinghouse Air Brake Company and the WestinghouseTraction Brake
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