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Between andthe South African Railways placed Class 19D steam locomotives with a Mountain type wheel arrangement in service. Between and33 more were built for other operators like the Rhodesia and Angolan railways and the Nkana and Wankie mines, which makes the Class 19D the most numerous South African steam locomotive type ever built.
The Class 19D steam locomotive tools 4 wood south africa steam the final development of the Class 19 family of locomotives. At the request of Colonel F. Loubser, who was himself later to serve as the CME from to The final development of the Class was done in by W.
Day, CME from to The Tools 4 wood south africa steam 19D was a revised version of the Class 19C with piston valves and Walschaerts valve gear instead of rotary cam poppet valve gear.
Between andClass 19D locomotives were built in seven batches by six locomotive manufacturers in CzechoslovakiaGermany and the United Kingdom and delivered to the SAR and several other operators in Southern Africa. The Class 19D, nicknamed Dollywas very similar to its predecessor Class 19Cbut Day specified piston valves and Walschaerts valve gear instead of rotary cam poppet valve gear. The cylinders were redesigned with straighter steam ports while the valve gear itself was revamped with a longer steam lap and greater valve travel.
In all other respects they were identical to the Class 19C. The last five locomotives of the first batch from Krupp, numbers towere fitted with exhaust steam injectors. The cylinders were of Woodworking Tools For Sale In South Africa Red the combined type, being cast in two identical and interchangeable sections, each made up of one cylinder and half of the smokebox saddle. They were of cast iron and had liners fitted. The design of the steam passages provided for a large cross-sectional area for both live and exhaust steam.
All coupled wheels were flanged. The axle boxes of the leading and trailing wheels were equipped with roller bearings while the solid bronze coupled wheel axle boxes were soft grease-lubricated.
Soft grease lubrication was used throughout for the motion gear, except the piston rods, valve spindles and main crossheads which were oil-lubricated. Two four-feed sight lubricators, arranged in the cab, supplied oil to the steam chests and cylinders.
The Class 19D was delivered with a Watson Standard no. The regulator was tools 4 wood south africa steam the multiple-valve type, with the valves arranged on the saturated steam side of the superheater header in accordance with SAR practice.
The boiler was one of the range of standard type boilers which were tools 4 wood south africa steam by Day's predecessor as CME, Tools 4 wood south africa steam. Watson, as part of his standardisation policy. The locomotive was also equipped with a Watson cab with its distinctive inclined front. Despite the specifications, the first batch of Class 19D locomotives, built by Krupp and Borsig and delivered in andcame in two variations.
The Krupp-built locomotives were delivered with domeless boilers, while the Borsig-built locomotives conformed to the specifications with domed boilers. While the domeless boilers did not conform to the specified Watson Standard no. It appears that Krupp had decided on their own accord that a dome was not necessary since there was no regulator in the dome, but merely a standpipe.
Krupp substituted the dome with a manhole cover on which the two Pop safety valves were mounted, while the Woodworking Power Tools For Sale In South Africa Steam steam was collected through a battery of collecting pipes, situated high up in the boiler in a similar manner to that which was used in the Class 16E.
All the subsequent Class 19D orders were delivered with domed Watson Standard no. Technically, whenever the loading gauge permitted the use of domes, their use was preferable to the domeless system which resulted in crowding multiple pipes into tools 4 wood south africa steam boiler and other complications better left out of boilers. Tools 4 wood south africa steam, according to drivers, there was no apparent difference in locomotive performance between the two boiler types.
The Watson Standard boilers are interchangeable between locomotives. In the process of locomotives undergoing major overhauls, these twenty Krupp-built domeless boilers migrated between engines during subsequent years. As a result, locomotives from the other builders and even some Classes 19A and 19C locomotives eventually ended up with some of these domeless boilers. As a result of having been built over such a long time span Woodturning Tools South Africa by so many different manufacturers, the six main groups of the Class 19D all had different all-up weights and axle loadings, as shown in the table and the specifications in the infobox.
Over the eleven years during which the Class 19D was being produced for the SAR, some alterations occurred. During the service life of the Class 19D, several tender exchanges occurred to best equip a locomotive for the region it was allocated to and the type of service it was to be employed in.
In line service, type MX Torpedo tenders were usually preferred for their larger coal and water capacities. The Class 19D was the most numerous South African branch line locomotive and, at built for the SAR, was only twenty less in number than the Class 15F mainline locomotive, the most numerous South African steam class.
The Class 19D was very versatile tools 4 wood south africa steam saw main- and branch line service all over South Africa with the exception of the Western Capewhere the Class 19C was used. Tasks varied from mainline local and international passenger trains on the section between Warrenton and Mafeking en route between South Africa and Northern Rhodesia via Bechuanaland and Southern Rhodesiato secondary and branch line duties and in later years as shunting engines.
From c. After Capital Park's blue-liveried Class S2 no. Apart from shunting work, the blue Dolly was often specially requested to work the Cullinan train during the Jacaranda season. The Class 19D served until right at the end of the South African steam era and were amongst the last steam locomotives to be replaced by electric and diesel-electric traction. Other Southern African railways and some industries also purchased locomotives built to the Class 19D design. When these foreign versions are included, a total of locomotives were built to the Class 19D design making them even more numerous than the Class 15F.
In Augustfor example, numbersand were based at Lobito and were observed to be coal-fired. At the same time, numbers and were observed at Luso and no. Between andHenschel and Son built twenty for Rhodesia Railways, their 19th class, numbered in the range from to They had tenders similar to the SAR Torpedo type, but with plate frame bogies instead of cast frame Buckeye bogies. A single RR 19C class, no.
After a collision init was rebuilt into a non-condensing 19th Class and re-entered service in The condensing tender was rebuilt to a Torpedo tender by mounting a tank and coal bunker, supplied locally in Bulawayo, on the frame. By Juneonly three were left in service, all allocated to the Bulawayo shed, but with two out-stationed at Mafeking in South Africa.
Two were built by Henschel for the Nkana copper mines in Northern Rhodesia innumbered and In four more without superheating and numbered in the range from 1 to 4 were built to the design of the Class 19D by NBL for the Wankie Colliery in Southern Rhodesia.
As they were being retired, several Class 19D locomotives were sold into industrial service. BCL in Botswana, and more were to follow. The locomotives, possibly numbers andwere to be overhauled for use by the mine there, which was still operating ex-SAR Class 19D and ex-RR 19th class locomotives.
By Junethe first of these two was put into service. However the mine closed in late putting the entire fleet out of work and now up for sale December As a trial run before SAR mechanical engineer David Wardale was granted permission to proceed to rebuild a Class 25NC locomotive to the Class 26 Red Devil inhe was allowed to carry out modifications to a Class 19D locomotive. The locomotive selected for the experiment was Krupp-built no.
A gas producer combustion system GPCS and dual Lempor exhaust were installed, along with some other small improvements. The Lempor had a four-jet blastpipe with extended petticoats to provide truer ejector proportions.
To accommodate the arrangement, the smokebox was extended by millimetres Steam flow in the cylinders was improved by streamlining the edges of the piston valves which were each equipped with an additional valve ring to reduce leakage. The firebox was tools 4 wood south africa steam to the GPCS system wherein principal combustion is effected using secondary air introduced above the firebed through ducts in the firebox sides, while primary air was restricted Woodworking Power Tools For Sale In South Africa Australia through dampers and a redesigned grate.
Firebox turbulence was created by steam jets and clinkering was inhibited by introducing exhaust steam under the grate. Sanding was improved and de-sanding jets were installed to clean the rails after the locomotive had passed. The success of this experiment convinced the SAR management at the time tools 4 wood south africa steam the viability of the project which culminated in the Class 26 Red Devil. The table shows the Class 19D builders, works numbers, years built and engine numbers.
Batch code symbols for the weight specifications as defined in the infobox are included in the "Notes" column. The main picture shows Umgeni Steam Railway's Tools 4 wood south africa steam no. The following pictures serve to illustrate Class 19D models from the various builders as well as boiler and tender variations. FOTR's Krupp-built no. Saiccor's Borsig- built no. RSH-built no. Ceres Rail Company's no.
Rovos Rail 's NBL-built no. Henschel-built Rhodesia Railways 19th Class no. From Wikipedia, the free encyclopedia. Steam Locomotives of the South African Railways. ISBN Twilight of South African Steam 1st ed.
Locomotives of the South African Railways 1st ed. Cape Town: Struik. Loubser, son of M. VIII, VIII, 6a-7a,A, Caption Captions 39, 57, 75 and Thundering Smoke1st ed.
Ilminster, Somerset: Sable Publishing House. The Smoke that Thunderstools 4 wood south africa steam ed. Harare: African Publishing Group.
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