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Cof Cymru: National Historic Assets of Wales · Wales

Newbridge Beam Engine

Pontypridd, Rhondda Cynon Taff, Wales

A scheduled monument in Pontypridd, Rhondda Cynon Taff, recorded as Beam Engine (Post Medieval/Modern).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Newbridge Beam Engine, Pontypridd, Rhondda Cynon Taff, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Scheduled monument
Site type
Beam Engine
Period
Post Medieval/Modern
Date of designation
28 July 1994
Community
Pontypridd
Unitary authority
Rhondda Cynon Taff
Country
Wales
Coordinates (centre of the scheduled area)
51.58810, -3.32557
SAM number
GM457
Cadw record number
2295

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1608 map "(13) Cambriae Typus." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1608 · (13) Cambriae Typus. (David Rumsey Map Collection, Stanford Libraries)
  • 1636 · Cornubia : Devonia, Somersetus, Dorcestria, Wiltonia, Glocestria ... (David Rumsey Map Collection, Stanford Libraries)
  • 1865 · England and Wales. England No. 6. (David Rumsey Map Collection, Stanford Libraries)
  • 1906 · 249 Newport (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • [Kaart] (University Library, Vrije Universiteit Amsterdam)

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the Scheduled Ancient Monument.

The monument comprises a beam winding engine from Newbridge (or Gelliwion) Colliery in Pontypridd, re-erected in its present position outside the former Treforest School of Mines in 1920. It was originally built in 1845 by the coalowner John Calvert, and remained in working order until 1919. The engine was made by Varteg Iron Company and remains as built, with the exception of the cylinder, which was renewed by Brown Lennox in 1861. It was reputed to have been the first steam winding engine in the Rhondda, the earlier pits being operated by water balance. It was also used for pumping. The cylinder was double-acting, with a 26.5 inch bore and 5 feet stroke. It has an ordinary slide valve with slip eccentric gab rod and hand lever for reversing. The beam is 17 feet long and the flywheel 13.5 feet diameter with six oval arms. The crank, main connecting rod, beam, cylinder and other parts are all of cast iron.

The monument is of national importance for its potential to enhance and illustrate our knowledge and understanding of the development of the mining industry in Wales. It retains significant archaeological potential, with the strong possibility of the presence of associated archaeological features and deposits. A beam engine may be part of a larger cluster of industrial monuments and their importance can further enhanced by their group value.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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