An air-insulated choke coil for pressures up to 150,000 volts.
Horn-gap, choke-coil protector for alternating-current lines.
An outlet box attached to the ceiling.
A 90 degree angle connector.
"Aqueduct of Segovia, Spain. A conduit or channel for conducting water from one place to another."-Whitney,…
"Roman aqueduct near Nimes, in France."—Colby, 1899
"A conduit for conveying water more particularly applied to structures for conveying water from distant…
A Claudian aqueduct, a building constructed in honor of Claudius I, a Roman emperor.
"Part of a Roman Aqueduct. Aqueducts form one of the most characteristic features of Roman architecture.…
"The ruined aqueducts in the Campagna." — Young, 1901
Showing the general arrangement of the proposed outdoor hydro-electric station.
A Multigap alternating-current arrester with series resistance arranged for pole mounting.
A cross section of a General Electric company 115,000 - 135,000 volt electrolytic arrester tank.
An illustration of a full page border with birds on power lines.
Boiler house and generating station of the Remington Arms and Ammunition Company in Bridgeport, Connecticut.
An assembled bracket box and fixture stud.
A building wired for double-pole switches.
A Burke suspension lightning protector for pressures of up to 6600 volts.
An example of cross water channel, set off-center.
A 100-amp choke coil designed for pressures of up to 6600 volts.
The diagram of "circuit-breaker type" lightning protector.
An umbrella being used for catching dirt at a ceiling outlet.
A Westinghouse "pancake type" choke coil for pressures from 2200 to 25000 volts.
Arrangement of two-phase conductors on cross arms.
Installation of a concealed conduit where the conduit run is available.
Conduit lines installed in an elevator shaft in a finished building.
Vertical conduit run to serve different floors or different apartments.
Rigid conduit switchbox in position.
Conduit runs supported on the outside of a building.
Methods of connecting an alternate-current demand meter for 440 and 660-volt loads. For 110 and 220-volt…
A flexible connector connected to a rigid connector.
Construction around windows.
A plan of the desk's face and front elevation of the control desk instrument board.
Westinghouse control pedestal used in combination with an instrument post.
Sectional elevation showing a typical arrangement of a synchronous converter sub-station for electric…
An example of cross water channel asymmetrically aligned.
Cross-section of New Croton dam.
A cupped-disc-gap protector.
The Wright demand meter.
A dirt catching device assembled and cross-sectioned.
Front view of the five-panel direct-current switchboard.
A combination pumping and electric-light plant driven by a gravity waterwheel.
The cover of the National Light Association booklet.
Sectional elevation of a General Electric Company electrolytic protector.
Westinghouse equalizer pedestal with a switch for compound-wound direct-current generator.
Sectional elevation of the turbine building of the Essex Station.
An exposed conduit installation.
Exterior view of building that was wired.
Fasteners for Kuhlo wire.
Supporting fixture from an attic.
A flexible conduit connected to a flexible conduit.
Manipulation of the special flooring saw. (Starting the cut).
A public fountain to provide a jet of drinking water
Typical framing of a wooden building.
A cupped-disc-gap protector.
A Garton-Daniels lightning protector.
Loss in a suction gas-producer plant.
A direct-connected generating unit. A high-speed piston-valve engine driving a small alternator.