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Showing total 3,191 results
Start Over Topic business.industry Publication Year Range More than 50 years ago Publisher institution of engineering and technology (iet)
3,191 results

1. Electric driving in the paper mill, on heat-economy lines

Author

A.B. Mallinson

Subjects
Engineering, Paper machine, business.product_category, Power station, Economy, business.industry, Table (database), business, Prime (order theory)
Abstract

The various uses for which steam is required in paper manufacture are first discussed.Then follow particulars of the various classes of machinery to be driven, and comments on the selection of suitable electrical gear. The heating requirements for heat economy, and the various types of power plant by which this can be attained are discussed in detail, together with recommendations on how each type of plant will be used for the different types of paper mills.The utilization of existing prime movers on “heateconomy” lines is specially shown.The factors governing the choice of electric supply are then dealt with.Finally, the driving of the variable-speed end of the paper machine proper is discussed in detail. The requirements for a successful drive are first enumerated, then various means of attaining that drive, not only with a single motor, but alternatively with several motors, both electrically and mechanically interlocked, are investigated.A Table at the conclusion of the paper gives particulars of machines which have been converted for electrical working in the United Kingdom, and the total number of machines in the country.

Published
1921

2. Joint discussion on Mr. Rayner's paper, 'Report on temperature experiments carried out at the National Physical Laboratory', and Mr. Goldschmidt's paper, 'Temperature curves and the rating of electrical machinery', at meeting of March 9, 1905

Author

A.F. Berry, H.M. Hobart, E.H. Rayner, Alexander Siemens, Alexander Russell, H.S. Russell, Wonkyu Moon, Miles Walker, Silvanus P. Thompson, Roy Goldschmidt, J.S. Peck, H.D. Symons, and R.T. Glazebrook

Subjects
Engineering, business.industry, Physical laboratory, Paper report, Electrical engineering, Mechanical engineering, Joint (building), business, Electrical machinery
Published
1905

3. The transport of paper tape in digital computation

Author

Andrew D. Booth

Subjects
Mechanism (engineering), Character (mathematics), Digital computation, Paper tape, Group method of data handling, Computer science, business.industry, Work (physics), Electrical engineering, business
Abstract

Using the principles of elementary dynamics limits are put on the speeds with which a paper transport mechanism which is required to stop at a given character can be expected to work. It is shown that these speeds are nearly four times those so far achieved.

Published
1960

4. Discussion on 'Electric driving in the paper mill, on heat-economy lines'

Author

W. Adamson, George Rattenbury, E.E. Tasker, A.B. Mallinson, A.L. Boyle, F.P. Spicer, F.C. Anderson, S.J. Watson, T.D. Clothier, C.R. Kemp, and A.E. Malpes

Subjects
Engineering, business.industry, Paper mill, business, Automotive engineering, Manufacturing engineering
Published
1921

5. Continuation of discussion on Mr. Preece's paper, 'On some points connected with mains for electric lighting', and Mr. Crompton's paper, 'On the most economical mode of feeding a low-pressure network'

Author

W.H. Preece, Webber, A. E. Mavor, W.L. Madgen, G.L. Addenbrooke, R.E.B. Crompton, J. Swinburne, Ayrton, Gisbert Kapp, William Thomson, Alexander Siemens, and David Salomons

Subjects
Engineering, Continuation, Electric light, Mains electricity, business.industry, Electrical engineering, Mode (statistics), business
Published
1891

7. Electrical insulating papers for the manufacture of power cables

Author

T.R. Scott and T.N. Riley

Subjects
Engineering, Physical structure, Electrical resistivity and conductivity, business.industry, Mechanical strength, Mechanical engineering, business
Abstract

The work of previous authors on the subject of paper as a cable-insulating material is briefly reviewed. It is shown that, in the past, attention has been directed too exclusively to the fibre stock, and the relation of the physical structure to the electrical properties has been relatively neglected. The characteristics which a cable-insulating paper should possess are then outlined. Briefly, these are high electric. strength, high oil-absorption, low electrical conductivity, high mechanical strength, and permanence.The results of tests designed to determine the relation of the paper structure to these qualities are then quoted and discussed. From these tests it is concluded that a satisfactory paper for power-cable insulation should have the fibres closely packed to give low bulk while still retaining high absorbency. The fibre packing should not be obtained by heavy surface calendering.The methods of test employed and the influence of the manufacturing processes on the product are briefly discussed in appendices.

Published
1929

8. Elecricity in paper mills

Author

W.J. Mason and S.A.G. Emms

Subjects
Engineering drawing, Electronic speed control, Engineering, Electricity generation, business.industry, Section (typography), Electricity, business, Industrial engineering, Protective system, Power (physics)
Abstract

Section (1) gives a survey of paper-making processes and of their power requirements. Special problems of power generation and distribution, and the protective system adopted against overload and short-circuits, are dealt with in Section(2). Drives for paper-machine auxiliaries, with a description of the ?plural starter? system, are detailed in Section(3). Section(4) deals with paper-machine drives, and gives a brief description of leading types. High-accuracy speed control for paper machines is the subject of Section (5). Section (6) gives information in regard to drives for ?finishing? machines, supercalenders, reeling machines and slitters. Finally, Section (7) deals with miscellaneous applications of electricity in the paper mill.

Published
1941

10. The drying process in paper as determined by electrical methods

Author

C.G. Garton

Subjects
chemistry.chemical_compound, Materials science, chemistry, business.industry, Scientific method, Cellulose, Process engineering, business, Water content
Abstract

The nature of the drying process in paper, at two temperatures and various ambient pressures, has been investigated. Apparatus has been developed, and is described, which permits the drying process to be investigated at high vacua, and which is sufficiently sensitive to measure the electrical changes due to a water content of the order of 0-05 % of the weight of cellulose present. A number of theoretical conclusions has been derived from the experimental data, and these are summarized at the end of the paper.

Published
1940

11. The breakdown mechanism of impregnated paper cables

Author

D.M. Robinson

Subjects
Void (astronomy), Engineering, business.industry, Carbonization, Ionization, Electrical engineering, Perpendicular, Composite material, business, Voltage, Conductor
Abstract

A new technique of cable examination has been developed. Incipient faults have been studied before actual breakdown with the aid of a microscope, the papers having been freed from oil and dyed to show up the waxing. The types of waxing observed are classified, and their part in breakdown is discussed. The deterioration is always found to be in connection with the conductor, generally through the gap of the first paper. The occurrence of the maximum deterioration at a distance from the conductor is explained, and a diagram showing the path of failure in an actual case is given. The conclusion reached is that failure originates from the ionization in a void in contact with the conductor, but that subsequent breakdown takes place by carbonization of the compound. Such carbonization requires time for its completion and is the chief factor in the voltage/time-to-breakdown curve. It takes place both longitudinally, over the surface of the paper, and perpendicularly through it. The results obtained in the laboratory are compared with those in service, and the types of failure are described. The effect of d. c. stress on cables is discussed and the advantages of routine d. c. testing of feeders are explained on this basis.

Published
1935

13. The prevention of ionization in impregnated paper dielectrics

Author

S.G. Brown and P.A. Sporing

Subjects
Materials science, Work (electrical), business.industry, Ionization, Electrical engineering, Mechanical engineering, Dielectric, business
Abstract

This paper is an account of work which was undertaken in the first place to study the performance under various conditions of paper-dielectric condensers such as are commonly used for power-factor correction. It shows that breakdown of dielectrics in service is due to ionization of entrapped air; and that, removal of the air being impossible, the design of cables and condensers should be such as to prevent ionization. The principle of this design is to subdivide the dielectric. The effect of surges in causing breakdown is indicated, and a new test for finished products is suggested.

Published
1929

15. Continuation of discussion on Dr. Lodge's paper, 'Improvements in magnetic space telegraphy', Mr. Evershed's paper, 'Telegraphy by magnetic induction', and Mr. Preece's paper, 'Ætheric telegraphy'

Author

Andrew C. Brown, Charles Bright, O. Lodge, W.P. Granville, S. Evershed, C.A. Stevenson, Dane Sinclair, W.P. Brett, and A.J.S. Adams

Subjects
Continuation, Engineering, business.industry, Electrical engineering, Space (mathematics), business, Telecommunications, Telegraphy, Electromagnetic induction
Published
1898

17. Eddy-current losses in multi-core paper-insulated lead-covered cables, armoured and unarmoured, carrying balanced 3-phase current

Author

A.H.M. Arnold

Subjects
Engineering, business.industry, Phase (waves), Electrical engineering, Structural engineering, Cycle per second, law.invention, law, Eddy current, Skin effect, Current (fluid), Proximity effect (electromagnetism), business, Lead (electronics), Electrical conductor
Abstract

This report deals with an investigation of eddy-current losses in multi-core circular-conductor and shaped-conductor paper-insulated wire-armoured cables, and the development of formulae by means of which the losses can be computed. The experimental work covers tests with balanced three-phase currents at frequencies from 25 to 300 cycles per second. The eddy-current losses are divided into four parts, namely, skin effect, proximity effect, lead-sheath effect, and armouring effect. The ratio of a.c. to d.c. resistance of the conductors, calculated by the appropriate formula, is, with one exception, within 5% of the measured value under all the conditions covered by the investigation, the average difference between calculation and measurement being only 1%.

Published
1941

20. Discussion on Mr. McMahon's paper on 'Electric locomotives in practice, and tractive resistance in tunnels, with notes on electric locomotive design'

Author

R.H. Smith, J.W. Swan, P.V. McMahon, W.M. Mordey, C.E. Grove, E. Wilson, C.A. Carus-Wilson, A.M. Taylor, and R.P. Brousson

Subjects
Engineering, Electrically powered spacecraft propulsion, business.industry, Electric locomotive, Traction (engineering), Mechanical engineering, business, Automotive engineering, Traction motor
Published
1899

21. Continuation of the discussion on Mr. H. Benest's paper 'On some repairs to the South Amercian Company's cable off Cape Verde in 1893 and 1895'

Author

H. Benest, W. Goodsall, John Milne, John Rymer-Jones, Charles Bright, W.H. Preece, Douglas C. Morton, W.R. Lugar, E.W. Parsone, Henry Mance, Anthony S. Thomson, H.C. Donovan, E. March Webb, Wilson-Barker, Robert Kaye Gray, Thomas T.P. Bruce Warren, and H.D. Wilkinsin

Subjects
Continuation, Engineering, business.industry, Forensic engineering, business
Published
1897

23. Continuation of discussion on Mr. Hammond's paper, 'Cost of generation and distribution of electrical energy'

Author

Michael Short, E.W. Cowan, A.T. Cooper, H.M. Sayers, C.H. Gadsby, J.S. Raworth, J.W. Swan, Horace Boot, G.L. Addenbrooke, W. Geipel, E. Hammond, A.B.W. Kennedy, W.H. Patchell, E.H. Cozens-Hardy, A.J. Lawson, J.N. Shoolbred, and J.F.C. Snell

Subjects
Engineering, Continuation, Distribution (number theory), Chemical engineering, business.industry, business, Mathematical economics
Published
1898

25. Resumed discussion on the papers on 'Distribution laws in electric supply systems' by A.D. Constable, A.M.I.E.E., and E. Fawssett, A.I.E.E., and 'A study of the phenomenon of resonance in electric circuits by the aid of oscillograms' by M.B. Field, M.I.E.E., A.M.I.C.E

Author

T. H. Minshall, W. Duddell, A Hay, W.M. Mordey, and Michael B. Field

Subjects
Engineering, Distribution (number theory), Field (physics), business.industry, Electrical engineering, Resonance, business, Mathematical physics
Published
1903

26. Continuation of discussion on Professor S.P. Thompson's paper, 'Rotatory converters'

Author

W.B. Esson, W.B. Sayers, E.K. Scott, H.M. Hobart, J. Swinburne, Henry Mance, E. Wilson, Eustace Thomas, Michael B. Field, W.M. Mordey, H.F. Parshall, Silvanus P. Thompson, A. J. Lawson, and C.A. Carus-Wilson

Subjects
Engineering, Continuation, business.industry, Electrical engineering, Converters, business
Published
1898

28. Discussion on the papers 'High-tension continuous-current traction' by Mr. Gratzmuller, 'Single-phase traction' by Mr. Latour, 'Railway electrification problems in the United States' by Mr. Parodi, 'The electrification schemes of the Chemins de Fer du Midi' by Mr. Jullian, 'The electrification of the State Railway: the Paris suburban lines' by Mr. Mazen, and 'Petrol-electric motor-vehicles' by Mr. Damoiseau, at Paris on 21st and 23rd May, 1913

Author

H. Parodi, L.F. Esbran, W. Slingo, W. Duddell, R. Hammond, L. Gratzmuller, A.N. Mazen, R.T. Smith, G. Girousse, and A. Bochet

Subjects
Electric motor, Engineering, MIDI, business.industry, medicine.medical_treatment, Electrical engineering, computer.file_format, Traction (orthopedics), Electrification, medicine, Single phase, Continuous current, business, computer, High tension
Published
1913

30. Joint discussion on the papers 'Electrical equipment of the Aberdare collieries of the Powell Duffryn Company' by Mr. Sparks, 'Electric winding in main shafts considered practically and commercially' by Mr. Mountain, and 'Electric winding considered practically and commercially' by Mr. Hooghwinkel, at meeting of March 22, 1906

Author

W.H. Patchell, T. Campell Futers, Jason Barnes, A.J. Bloemendal, C.S. Vesey Brown, A. du Pasquier, A.F. Stevenson, A.S. Clift, G. Stjernberg, H.E. Mitton, L.F. Whitmore, J. Leggat, G. Hooghwinkel, G.S. Ram, H.M. Sayers, W.C. Mountain, G.L. Addenbrooke, R. Herzfeld, Rudolph Braun, C.B. John Gavey, F. Hird, A.C. Anderson, C.P. Sparks, Charles P. Markham, and Alfred J. Tonge

Subjects
Engineering, business.industry, Electrical equipment, Electrical engineering, Joint (building), business
Published
1906

32. Continuation of Discussion on Messrs. W. Duddell and E. W. Marchant's paper, 'Experiments on alternate current arcs by aid of oscillographs'

Author

Leonard Andrews, J.W. Swan, E. Wilson, J.A. Fleming, William Edward Ayrton, M. O'Gorman, F. Tandy, W.M. Mordey, W. Duddell, E.W. Marchant, Silvanus P. Thompson, J. E. Petavel, A.A.C. Swinton, Ayrton, L. Gaster, and E. Ackerman

Subjects
Engineering, Continuation, business.industry, Electrical engineering, Alternate current, business
Published
1899

33. Discussion on Mr. Lackie's paper, 'Earthing' before the Glasgow Local Section

Author

A. Arthur, J.W. Black, F.A. Newington, W. McWhirter, D.G. Brooks, H.B. Maxwell, J.T. Bottomley, L.M. Waterhouse, L.W. Foster, J.W. Manley, W.W. Lackie, W. Mcwhriter, D. McGibbon, J. Johnston, J.D. McKenzie, W.M. Mordey, B.A. Pilkington, E.L. Berry, W.A. Chamen, Graeme Stevenson, W.R. Rawlings, H.A. Mavor, and M.M. Munro

Subjects
Engineering, business.industry, Ground, Section (archaeology), Electrical engineering, Forensic engineering, business
Published
1905

34. Adjourned discussion on the papers 'Distribution laws in electric supply systems' and 'A study of the phenomenon of resonance in electric circuits by the aid of oscillograms'

Author

Michael B. Field, Arnett Campbell, M. A. Carus-Wilson, A. F. T. Atchison, G.L. Addenbrooke, W. Duddell, A. D. Constable, W. M. Thornton, C.P. Sparks, and T. Mather

Subjects
Engineering, Distribution (number theory), business.industry, Phenomenon, Electrical engineering, business, Resonance (particle physics), Electronic circuit
Published
1903

36. Discussion on the papers 'On the systems of electric units', 'Proposals concerning electrical and physical units', 'The absolute value of the e.m.f. of the Clark and the Weston cells' and 'The so-called international electrical units', read at St. Louis

Author

E.L. Nichols, R.T. Glazebrook, A.G. Webster, H.S. Carhart, H.E. Harrison, A.K. Kennelly, J. Perry, F.A. Wolff, C.H. Sharp, G.W. Patterson, W. Duddell, A.E. Kennelly, and K.E. Guthe

Subjects
business.industry, Philosophy, Electrical engineering, Absolute value (algebra), business, Humanities, St louis
Published
1905

37. Discussion on Mr. Milne's paper, 'The electrical equipment of artisan dwellings', and the report on 'Earthing', before the Institution, 25 March, 1920

Author

R. Kilpatrick, Charles A. Baker, W. Cross, H. Moss, J.C. Christie, G.S. Ram, Harvey Richardson, R.B. Mitchell, Stewart Reid, E.J.B. Lowdon, G.H. Elliott, W.W. Firth, H. Adams, G.C. Burnand, Daniel Martin, G.F. Davidson, J.W. Beauchamp, R.A. Ure, J. Frith, S.W. Melson, R.D. Archibald, P. Rosling, L. Jessop, H.H. Berry, L. Milne, T.B. Johnson, W.H. Wraith, A. Pickersgill, H.J. Cash, W.R. Rawlings, and A.W. Ashton

Subjects
Engineering, business.industry, Ground, Electrical equipment, Institution (computer science), business, Management
Published
1920

39. Impulse puncture characteristics of mass-impregnated paper-insulated cables, with special reference to testing procedures

Author

P.R. Howard

Subjects
Polarity reversal, Engineering, business.industry, Acoustics, VLF cable testing, Electrical engineering, General Medicine, Impulse (physics), business, Conductor, Voltage
Abstract

The influence of polarity, polarity reversal, repeated stressing, waveshape and conductor size on the impulse puncture voltage for three sizes of single-conductor mass-impregnated 33-kV cable has been investigated. Experimental results are discussed and conclusions drawn from which a test for incorporation in a cable specification and the revision of B.S. 923: 1940 for cables has been suggested.

Published
1953

42. Discussion on the report on the International Electrical Congress at St. Louis in 1904 by W. Duddell, and on the papers on units and standards read before the Congress

Author

Lord. Rayleigh, William Edward Ayrton, H. E. Harrison, David Robertson, F.E. Smith, Alexander Siemens, R.T. Glazebrook, C.W.S. Crawley, W. Duddell, R.E.B. Crompton, A.P. Trotter, J. Rennie, Josh Perry, Silvanus P. Thompson, and Robert Kaye Gray

Subjects
Engineering, business.industry, Library science, business, Engineering physics, St louis
Published
1905

46. Discussion on papers by Mr. A.D. Williamson, on 'Applications of electricity in engineering and shipbuilding works', and Mr. A.B. Chatwood, B.Sc, on 'Electric driving in machine shops'

Author

Robert Kaye Gray, A. B. Chatwood, Ron Hammond, H.O. Wraith, W.G. Rhodes, William Hand Allen, Wiesengrund, James Aitken, Stuart A. Russell, H.A. Mavor, A.D. Williamson, J.S. Fairfax, D.L. Selby Bigge, E. Kilburn Scott, J.H. Barker, L. Gaster, W.H. Patchell, and Andrew Stewart

Subjects
Engineering, Shipbuilding, business.industry, Electricity, business, Industrial engineering, Manufacturing engineering
Published
1903