Showing papers in "Transactions of The American Institute of Electrical Engineers in 1903"

Engineering English

Abstract: Do we not all assume too readily that because we speak, or think we speak, English, our expression of the thought, in our mninds is impeccable? Is not our engineering vocabulary too strictly professional? Does it not cramp the intelligence and impair perception? Ought we not to "break their bonds asunder," and learn thoroughly to use the master-tool - English? This article is a corollary of the discussion at Great Barrington last summer (1902), and refers to only one subject which the author feels fervently should always be included in the curriculum of an engineering education that is, the English language.

The Experimental Basis for the Theory of the Regulation of Alternators

Abstract: The presentation of this paper has been undertaken with a view to supplying the Committee on Standardization with data to enable them to draw up rules for the determination of voltage regulation, as Section 71 of the INSTITUTE rules is, no means, in accordance with fact and observation.

Safety Devices in Central Stations and Sub-Stations

Abstract: A review of general principles followed in the design and arrangement of electrical apparatus of generating stations, transmission lines and sub-stations and a list of safeguards against breakdowns and devices for localizing and clearing faulty elements of the system. Advantages of storage and reserve supply to ensure continuity of service to customers.

An Automatic Telephone Operator

Abstract: A description of an automatic telephone exchange operator, power driven, which performs the functions of switching, signalling, lineclearing, etc., of the human operator, and exactly similar means. Also a comparison of the salient features of the manual and automatic systems.

Transposition and Relative Location of Power and Telephone Wires

Abstract: A consideration of the causes of electrical disturbances in telephone lines which parallel high-tension lines, and of means for reducing these disturbances.

Communication after Adjournment

Abstract: Fearing tlhat the remarks of some of the speakers may have left an erroneous impression as to the potential of telephone circuits carried on the poles of high-tension transmission lines, I desire to state that some measurements made by a Weston voltmeter between the conductors of a telephone circuit placed five feet below the conductors of a 25,000 volt overhead circuit and ground, showed tlhe potential to be only from 140 to 160 volts. Similar measurements on a telephone circuit three feet below a 10,000 volt line showed only about 95 volts to ground and, naturally, no difference of potential between the telephone conductors. It seems to me that the voltage of a telephone circuit given as 20,000 by Mr. Thomas cannot be such potential as would be indicated by a voltmeter or such as would cause particular damage, being, I assume, simply static potential. Referring to the suggestions made as to signaling in case of partial breakdown of the telephone system, it has occurred to me that as a relay to the telephone circuit, a system of wireless telegraphy could be installed without large expense, which might advantageouslv be used in transmitting signals in case of trouble with tlhe telephone circuit.

The Evolution of the Telephone Switchboard

Abstract: A historic account of the development of the telephone exchange, and an analysis of the mechanical and electrical features of telephone switchboard apparatus from 1877 to date.

A Study of the Heyland Machine as Motor and Generator

Abstract: The Heyland motor consists essentially of an induction motor with short circuited secondary, and a commutator means of which exciting current may be supplied either to the short circuited winding or to a separate exciting winding. With either form, the power-factor can be controlled means of the current sent in through the brushes.

Burning of Wooden Pins on High-Tension Transmission Lines

Abstract: Facts concerning a number of examples of the burning of wooden insulators pins and a recommendation as to the use of iron pins.