Queensland PB15 class locomotive

Last updated

Queensland Railways PB15 class
PB15 Class Swanbank.jpg
448 at Swanbank
Type and origin
Power typeSteam
DesignerHenry Horniblow & LW Piggott
Builder Evans, Anderson, Phelan & Co (70)
North Ipswich Railway Workshops (1)
Kitson & Co (20)
Toowoomba Foundry (20)
Walkers Limited (122)
Build date1899-1926
Total produced233
Specifications
Configuration:
​
 •  Whyte 4-6-0
Gauge 1,067 mm (3 ft 6 in)
Leading dia. 2 ft 2 in (660 mm)
Driver dia.4 ft 0 in (1,219 mm)
Length47 ft 6 in (14.48 m)
Axle load 8.1 tonnes (8.0 long tons; 8.9 short tons)
Loco weight32 tonnes (31.5 long tons; 35.3 short tons)
Tender weight24 tonnes (23.62096 long tons; 26.45547 short tons)
Total weight56 tonnes (55.115566 long tons; 61.729433 short tons)
Fuel typeCoal
Fuel capacity4 tonnes (3.9 long tons; 4.4 short tons)
Water cap.2,500 imperial gallons (11,000 L; 3,000 US gal)
Firebox:
 • Firegrate area		12 sq ft (1.1 m2)
Boiler pressure150 psi (1,034 kPa)
later upgraded to
160 psi (1,103 kPa)
Heating surface:
 • Tubes and flues		780 sq ft (72 m2)
Cylinders 2 outside
Cylinder size 15 in × 20 in (381 mm × 508 mm)
Valve gear Stephenson (locos built 1899–1912)
Walschaerts (locos built 1924–26)
Performance figures
Maximum speed65 km/h (40.39 mph)
Tractive effort 12,750 lbf (56.71 kN)
Career
Operators Queensland Railways
Numbers347-362, 385-384, 404-413, 434-509, 518-537, 540-609, 12, 5, 103, 126, 128, 143, 220, 286, 339, 340, 731-751
Delivered1899
First run22/12/1899 [1]
Last run8/1970 [1]
Retired8/1970 [1]
Withdrawn8/1970 [1]
Preserved444, 448, 454, 732, 738
Current ownerVarious Heritage Groups
Disposition5 preserved, 228 scrapped

The Queensland Railways PB15 class locomotive is an old class of 4-6-0 steam engines operated by the Queensland Railways.

Contents

History

The design resulted from a need for more powerful engines for passenger trains. The PB15 Class engine was designed by Locomotive Engineer, Henry Horniblow and LW Piggott. Per Queensland Railway's classification system they were designated the PB15 class engine, P representing they were a passenger locomotive, the B that they had three driving axles and the 15 the cylinder diameter in inches. The PB15 engines were in essence identical to the B15 class engine. [2] [3] [4] [5]

The first PB15 engines were delivered by Walkers Limited, Maryborough in December 1899. By 1912, a total of 202 engines had been built by Walkers (122), Evans, Anderson, Phelan & Co (70), Kitson & Co (20) and Toowoomba Foundry (20). They were fitted with Stephenson valve gear. In May 1918, engine no. 411 was converted at North Ipswich Railway Workshops into a tank engine, the one off member of the 6D15 class engine. In March 1922 however, due to poor performance it was converted back to its original tender form. [2] [4]

In 1924 one example of the engine was built by North Ipswich Railway Workshops for the Aramac Shire Tramway. It was acquired by Queensland Railways in 1958. [2] [4]

In 1925/26, Walkers manufactured a further 30 improved PB15 Class locomotives. These engines of these wheel arrangement were fitted with larger tenders and Walschaerts valve gear. This earned this variant of the PB15 engines the nickname Walschaerts. [2] [4]

In 1932, a number of PB15 class locomotives attached to Ipswich depot were fitted with a second sandbox for rear sanding to assist with shunting work on the colliery branches. These types of engines were nos. 351, 508, 567, 574, 587, 591, and 750, the last mentioned being a Walschaert engines or 1924 type PB15 engine. Later, the rear sanding equipment attached to classmate engine No. 591 was removed and PB15 engine No. 525 was fitted in lieu.

Preservation

Five examples of these engines have been preserved:

Related Research Articles

<span class="mw-page-title-main">Valve gear</span> Mechanism for controlling steam flow in a reciprocating steam engine.

The valve gear of a steam engine is the mechanism that operates the inlet and exhaust valves to admit steam into the cylinder and allow exhaust steam to escape, respectively, at the correct points in the cycle. It can also serve as a reversing gear. It is sometimes referred to as the "motion".

<span class="mw-page-title-main">Walschaerts valve gear</span> Type of valve gear

The Walschaerts valve gear is a type of valve gear used to regulate the flow of steam to the pistons in steam locomotives, invented by Belgian railway engineer Egide Walschaerts in 1844. The gear is sometimes named without the final "s", since it was incorrectly patented under that name. It was extensively used in steam locomotives from the late 19th century until the end of the steam era.

<span class="mw-page-title-main">Caprotti valve gear</span>

The Caprotti valve gear is a type of steam engine valve gear invented in the early 1920s by Italian architect and engineer Arturo Caprotti. It uses camshafts and poppet valves rather than the piston valves used in other valve gear. While basing his design on automotive valves, Caprotti made several significant departures from this design to adapt the valves for steam. Having agreed a joint-venture with Worcester-based engineering company Heenan & Froude from 1938, Heenan & Froude fully acquired Caprotti post-World War II in 1947.

<span class="mw-page-title-main">Queensland C17 class locomotive</span>

The Queensland Railways C17 class locomotive was a class of 4-8-0 steam locomotives operated by the Queensland Railways.

<span class="mw-page-title-main">WAGR S class</span> Class of Australian 4–8-2 locomotives

The WAGR S class was a class of 4-8-2 steam locomotives built by the Midland Railway Workshops between 1943 and 1947 and operated by the Western Australian Government Railways (WAGR).

<span class="mw-page-title-main">Queensland BB18¼ class locomotive</span>

The Queensland Railways BB18¼ class locomotive was a class of 4-6-2 steam locomotives operated by the Queensland Railways.

The Queensland Pioneer Steam Railway is located near Ipswich, Queensland, Australia and runs through the former West Moreton pioneering coal fields. It was first opened in 1881 by colliery proprietor and politician Lewis Thomas (1832-1913) as a tramway to his coal mines.

<span class="mw-page-title-main">South African Class 19C 4-8-2</span>

The South African Railways Class 19C 4-8-2 of 1935 was a steam locomotive.

<span class="mw-page-title-main">South African Class 19B 4-8-2</span>

The South African Railways Class 19B 4-8-2 of 1930 was a steam locomotive.

<span class="mw-page-title-main">Queensland A10 Neilson class locomotive</span>

The Queensland Railways A10 Neilson class locomotive was a class of 0-4-2 steam locomotives operated by the Queensland Railways.

<span class="mw-page-title-main">Queensland AC16 class locomotive</span>

The Queensland Railways AC16 class locomotive was a class of 2-8-2 steam locomotives operated by the Queensland Railways.

The Queensland Railways C16 class locomotive is a class of 4-8-0 steam locomotives that was operated by the Queensland Railways.

<span class="mw-page-title-main">Queensland Beyer-Garratt class</span> Class of 30 Australian 4–8-2+2-8-4 locomotives

The Queensland Railways Beyer-Garratt class locomotive was a class of 4-8-2+2-8-4 steam locomotives operated by the Queensland Railways.

<span class="mw-page-title-main">Queensland B18¼ class locomotive</span>

The Queensland Railways B18¼ class locomotive was a class of 4-6-2 steam locomotives operated by the Queensland Railways.

<span class="mw-page-title-main">Queensland D17 class locomotive</span>

The Queensland Railways D17 class locomotive was a class of 4-6-4T steam locomotives operated by the Queensland Railways.

<span class="mw-page-title-main">South African Class S1 0-8-0</span> Class of 37 South African 0–8-0 shunting locomotives

The South African Railways Class S1 0-8-0 of 1947 was a steam locomotive.

<span class="mw-page-title-main">Queensland C19 class locomotive</span>

The Queensland Railways C19 class locomotive was a class of 4-8-0 steam locomotives operated by the Queensland Railways.

<span class="mw-page-title-main">Queensland Railways DL class</span>

The DL class is a class of diesel locomotives built by Queensland Railways, Robert Stephenson and Hawthorns and Walkers Limited for Queensland Railways between 1939 and 1961.

<span class="mw-page-title-main">Queensland B16½ class locomotive</span>

The Queensland Railways B16½ class locomotive was a one-off 2-6-2 steam locomotive operated by the Queensland Railways.

<span class="mw-page-title-main">Queensland B15 class locomotive</span>

The Queensland Railways B15 class locomotive is an old class of 4-6-0 engines operated by the Queensland Railways.

References

  1. 1 2 3 4 5 "PB15 Class « qrig.org – queensland railway's interest group".
  2. 1 2 3 4 Armstrong, John (1994). Locomotives in the Tropics Volume 2. Brisbane: Australian Railway Historical Society. pp. 79–83, 102–106. ISBN   9780909937263.
  3. ↑ Turner, Jim (1997). Australian Steam Locomotives 1896-1958. Kenthurst: Kangaroo Press. pp. 21, 88. ISBN   086417778X.
  4. 1 2 3 4 Oberg, Leon (2010). Locomotives of Australia 1850s-2010. Dural: Rosenberg Publishing. pp. 106–108. ISBN   9781921719011.
  5. 1 2 Clark, Peter (2012). An Australian Locomotive Guide. Rosenberg Publishing. pp. 51/52. ISBN   9781921719554.
  6. 1 2 PB15 No 448 Australian Steam
  7. ↑ Locomotives Bellarine Railway
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.