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Glass Negative - Crown Wheel, Tumbler and Shaft, Chas Ruwolt Pty Ltd, Engineering Products, Richmond, Victoria, 1928 Image Reg. No: MM 011681

Summary:
Glass negative of a crown wheel, tumbler and shaft.

Prior to the invention of cellulose nitrate film in 1903, photographic emulsion was supported on glass. Two different formats were developed for creating these supports - collodion wet plate negative (early 1850s) and the gelatin dry plate (1871) - however, both formats are commonly referred to as 'glass negatives.' The use of glass negatives greatly increased interest in photography and the gelatin dry plate eventually superceded the collodion wet plate by virtue of being more convenient.

As the collodion wet plate appears to have only been in use until the 1880s it seems likely that this glass negative is an example of the gelatin dry plate method.

Stamped on the machinery depicted is the name of Charles Ruwolt's company. Charles Ernest Ruwolt (1873-1946) was a German born engineer and industrialist. In 1902 he opened an iron foundry in Wangaratta and in 1928 the company merged with that of Isaac Stevenson, soon became the leading manufacturer of mining dredges.

Charles Ruwolt Pty. Ltd. (registered in 1910) moved to Melbourne in 1914 where it became a public company (Ruwolt & Co.) in 1920, although Ruwolt and Stevenson retained a controlling interest, and by 1938 the company was one of the largest engineering companies in Australia. During World War II the company was used to manufacture field artillery.

In 1948, two years after Ruwolt's death, the company was bought by Vickers Limited and renamed 'Vickers Ruwolt.' Vickers Ruwolt operated as part of Vickers Australia and, when the company in 1983 with BHP's Commonwealth Steel Company Limited in Newcastle, as part of Comsteel Vickers Limited.

Vickers Ruwolt was closed in 1985 although the Ruwolt name was briefly resurrected in 1986 when ANI took over Comsteel Vickers and renamed it ANI Ruwolt. However the Ruwolt name was dropped in 1995. The Vickers Ruwolt site was redeveloped and it now Victoria Gardens, Richmond.

A similar object can be seen in MM 11680 and 67907.
Description:
Full plate silver gelatin glass negative.
Description Of Content:
Glass negative showing a tube attached to what appears to be a chute and a large wheel.
Acquisition Information:
Donation from Vickers Ruwolt Pty Ltd, 1986
Discipline: Technology
Dimensions: 163 mm (Height), 210 mm (Width)

More information

Tagged with: crown wheels, dredge buckets, dredging machinery, engineering products, mining machinery, tumblers
Themes this item is part of: Engineering Collection, Vickers Ruwolt Collection
Primary Classification: MANUFACTURING & INDUSTRY
Secondary Classification: Engineering Products
Tertiary Classification: dredging equipment
Original Caption: CROWN WHEEL, TUMBLER AND SHAFT WITH BEARINGS.
Inscriptions: Photo No. 47 in centre of Photo.'
Entered in hand-written catalogue as '47 | Crown Wheel, Tumbler and Shaft with Bearings. Dredging Work.'
Entered in hand-written subject index under "CROWN WHEELS AND PINIONS DREDGING WORK as '47 | 8-8-28 | Crown Wheel, Tumbler & Shaft with Bearings'
Format: Glass Negative: Black & White; Whole Plate
Place & Date Depicted: Richmond, Victoria, Australia, 1928
References: David Chesterfield, Company Secretary (Bradken Limited), 'Charles Ruwolt Pty Limited - A Brief History,' at: http://bradken.com/documents/our-company/ruwolt_history.pdf, accessed: Sept 3, 2012

Hayes, G., 'Ruwolt, Charles Ernest (1873-1946)', Australian Dictionary of Biography, National Centre of Biography, Australian National University, http://adb.anu.edu.au/biography/ruwolt-charles-ernest-8309/text14571, accessed 3 September 2012.

Greta Bahnemann, 'The Preservation of Glass Plate Negatives,' at: http://www.webjunction.org/documents/webjunction/The_Preservation_of_Glass_Plate_Negatives.html, accessed: Sept 3, 2012

'Ruwolt, Charles Pty Ltd' at: http://www.emelbourne.net.au/biogs/EM01293b.htm , accessed: Sept 3, 2012

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