Written on back with blue felt-tip pen – Joseph Wilson Swan

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Sir Joseph Wilson Swan (b.1828 – d.1914) {sketch} 1 B&W photo print (large)

1860 produced crude carbon filament electric incandescent lamp (light bulb). 1871 invented the dry photographic plate. 1879 patented Bromide Paper. 1880 both Swan & Edison produce a practical light bulb. 1904 knighted. The sketch shows him with electric incandescent lamp.

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Any use of this image must be accompanied by the credit “Horowhenua Historical Society Inc.”

Signature of artist on original, bottom right – michael ayrton

Written on back with blue felt-tip pen – Sir Humphrey Davy

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Sir Humphrey Davy (b.1778 – d.1829) {sketch} 1 B&W photo print (large)

Photo reproduction of a sketch by Michael Ayrton.

Chemist and one of England’s greatest scientists, dicovered several chemical elements. 1815 devised a safety lamp for miners that bears his name – the Davy lamp. The sketch shows him holding this lamp.

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Any use of this image must be accompanied by the credit “Horowhenua Historical Society Inc.”

Signature of artist on original, bottom right – michael ayrton

Written on back with blue felt-tip pen – Michael Faraday

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Mr Michael Faraday (b.1791 – d.1867) {sketch} 1 B&W photo print (large)

Photo reproduction of a sketch by Michael Ayrton.

The unit of electrical capacitance, the “Farad” is named in his honour. The unit of electrical quantity, the “Faraday” used in the study of electrochemical reactions, is also named in his honour. Physicist & chemist, considered one of the greatest experimentalists of all time. 1813 at age 21 appointed as assistant to Sir Humphrey Davy. 1821 discovered the principle of the electric motor & built a primative model. 1831 stated the law of electromagnetic induction, and subsequently developed the first dynamo & later the transformer (though it did not come into use until the 1880’s). 1833 stated the basic laws of electrolysis. Declined the honour of knighthood.

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Any use of this image must be accompanied by the credit “Horowhenua Historical Society Inc.”

Printed below portrait on original print - (d) Karl Wilhelm Siemens (1823 – 1883)

Penciled on back – 14-1/2×8-3/4

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Mr Karl Wilhelm Siemens (b.1823 – d.1883) 1 B&W photo print

The unit of electrical conductance, the “Siemens” is disputed as to its being named in his honour or that of his older brother Werner. Born in Germany, moved to England in 1844. 1859 received British citizenship and changed his name to Charles William Siemens. Helped develop practical generators and lighting. Made significant contribution to the steel and telegraphic industries. 1883 knighted in the year of his death. (Encyclopaedia Britannica entry found under – Siemens, Sir William)

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Any use of this image must be accompanied by the credit “Horowhenua Historical Society Inc.”

Printed below portrait on original print - (c) Charles Wheatstone (1802 – 1875) (Photo: Institution of Electrical Engineers)

Penciled on back – 13-1/2×9-1/2

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Wrapped in tissue paper.

Sir Charles Wheatstone (b.1802 – d.1875) 1 B&W photo print

1843 developed the “Wheatstone bridge” that accurately measures electrical resistance. 1860’s independently developed ‘self-excited’ generator & initiated the use of electromagnets in electric generators. 1868 was knighted. He also measured the speed of electricity in conductors.

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Any use of this image must be accompanied by the credit “Horowhenua Historical Society Inc.”

Printed below portrait on original print - (d) Rookes Evelyn Bell Crompton (1845 – 1940) (Photo: Institution of Electrical Engineers)

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Wrapped in tissue paper.

Mr Rookes Evelyn Bell Crompton (b.1845 – d.1940) 1 B&W photo print

1870 – 1880 one of the pioneers in commercial electric lighting using arc lamps. His home is reputed to be the first in England to be fully electrically powered & electrically lighted. Proposed the generation & distribution of Direct-Current, but it was the Alternating-Current system advocated by Ferranti that was universally adopted.

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Any use of this image must be accompanied by the credit “Horowhenua Historical Society Inc.”

Printed below portrait on original print - (b) Sebastian Ziani de Ferranti (1864 – 1930) (Photo: Institution of Electrical Engineers)

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Wrapped in tissue paper.

Mr Sebastian Ziani de Ferranti (b.1864 – d.1930) 1 B&W photo print

After college assisted Sir Willam Siemens (Karl Wilhelm Siemens) in experiments with electric furnaces & dynamos. Age 18 patented an alternator (that was later found to have been anticipated by Sir William Thomson [later Lord Kelvin]), the device was noted for its compactness and for its capacity to produce 5 times more power than any other machine of its size. 1886 appointed engineer for Grosvenor Gallery Electric Supply Corporation, which under his direction grew into one of the world’s largest generating companies. 1887 promoting the location of power stations away from the centre of cities, he designed the Deptford Power Station outside London, the largest station of its time. Ferranti believed that satisfactory development of electric power hinged on generation in quantity & transmitting it at high-voltage as alternating current with minimal losses (as opposed to the use of Direct Current with its higher losses, proposed by R.E.B. Crompton), then to break down the voltage to consumers’ requirements at local sub-stations and transformers. Thus he correctly anticipated the modern “grid” system of electrical power generation, distribution & consumption that would eventually be used around the world.

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Any use of this image must be accompanied by the credit “Horowhenua Historical Society Inc.”

Printed below portrait on original print - (c) Charles Algernon Parsons (1854 – 1931) (Photo: C.A. Parsons & Co. Ltd.)

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Wrapped in tissue paper.

Sir Charles Algernon Parsons (b.1854 – d.1931) 1 B&W photo print

1884 invented multi-stage steam turbine. 1891 turbine fitted with condenser for use in electric generating stations. 1897 turbine fitted in ship ‘Turbinia’ to prove the greater advantages of the steam turbine compared to current steam engines, thus revolutionizing marine propulsion. 1911 knighted.

Photo of print used for exhibition purposes – historical persons in the development of electricity & electrical engineering. Possibly reproduced by Mr J.F. Bryce.

Any use of this image must be accompanied by the credit “Horowhenua Historical Society Inc.”

Printed on mounting card below photo – J.R. McElwain

Written on back with felt-tip pen – Rev. Richards

Written on album page with black ballpoint pen - Rev. Richards

Reverend Richards

Seated on carved chair at small round table (with fringe tacked around edge) resting an elbow on a book on the table.

Any use of this image must be accompanied by the credit “Horowhenua Historical Society Inc.”