Preserved 1931-built Sentinel DG4.

Preserved 1934-built S4 dropside in steam.

ex-LMS Sentinel No. 47183 at Derby in 1948.

Sentinel Waggon Works Ltd was a British company based in Shrewsbury, Shropshire that made steam powered lorries ("road locomotives"), railway locomotives and later diesel engined lorries and locomotives. Image File history File links Download high resolution version (768x1024, 755 KB) w:en:Sentinel Waggon Works DG4 registration KF 6482. ... Image File history File links Download high resolution version (768x1024, 755 KB) w:en:Sentinel Waggon Works DG4 registration KF 6482. ... Image File history File linksMetadata Download high-resolution version (768x1024, 616 KB) Preserved Hogs Back Brewery Sentinel steam lorry. ... Image File history File linksMetadata Download high-resolution version (768x1024, 616 KB) Preserved Hogs Back Brewery Sentinel steam lorry. ... Image File history File linksMetadata Download high-resolution version (2492x1651, 869 KB) © Colin Williams A w:en:Sentinel Waggon Works locomotive, see [1] UKRailwayPhotography File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Sentinel Waggon Works LMS Sentinels 7160... Image File history File linksMetadata Download high-resolution version (2492x1651, 869 KB) © Colin Williams A w:en:Sentinel Waggon Works locomotive, see [1] UKRailwayPhotography File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Sentinel Waggon Works LMS Sentinels 7160... Statistics Population: 70,059 Ordnance Survey OS grid reference: SJ495123 Administration District: Shrewsbury and Atcham Shire county: Shropshire Region: West Midlands Constituent country: England Sovereign state: United Kingdom Other Ceremonial county: Shropshire Historic county: Shropshire Services Police force: West Mercia Fire and rescue: {{{Fire}}} Ambulance: West Midlands Post office and... Shropshire (alternatively Salop or abbreviated Shrops) is an English county in the West Midlands region of the United Kingdom. ... Lorry Look up Lorry in Wiktionary, the free dictionary Can mean: A truck, in the sense of a commercial large goods vehicle. ... This article or section does not cite its references or sources. ...

History

The company began life in 1906 as Alley & MacLellan based in Polmadie, Glasgow and changed its name to Sentinel Waggon Works Ltd when a new factory was opened at Shrewsbury in 1915. There were several other slight changes to the name over the company's lifetime when further infusions of working capital were required to obviate financial problems. 1906 (MCMVI) was a common year starting on Monday (see link for calendar). ... Polmadie is a district in the Scottish city of Glasgow. ... For other uses, see Glasgow (disambiguation). ... 1915 (MCMXV) was a common year starting on Friday (see link for calendar). ...

Alley & MacLellan began producing steam road vehicles in 1906 when they introduced a 5 ton vertical boiler wagon, which featured a 2 cylinder undertype engine and chain drive. The early wagon was so successful that it remained in production with relatively few updates until the launch of Sentinel's famous Super in 1923. The company also produced steam railway locomotives and railcars, for the LMS railway company and industrial customers. 1906 (MCMVI) was a common year starting on Monday (see link for calendar). ... 1923 (MCMXXIII) was a common year starting on Monday (link will take you to calendar). ... Not to be confused with Railroad car A railcar is a self-propelled rail vehicle designed to transport passengers. ... LMS is an acronym with a few different meanings: London Mathematical Society Learning Management System Least mean squares an algorithm for adaptive filtering in digital signal processing London, Midland and Scottish Railway London Missionary Society LMS Color Space Library Management System LMS is also a user name used by Larry...

In 1917, the company was bought by William Beardmore & Co Ltd, and in 1920, after financial problems, the company was reorganized as Sentinel Waggon Works (1920) Ltd.

Sentinel, along with Foden, dominated the steam market, but the 1930s saw the demise of both companies' ranges as new legislation forced the development of lighter lorries, Sentinel surviving the longest. 1930 Foden Steam lorry 1959 Foden S20 dropside 1967 Foden S36 flatbed Foden Trucks is a truck manufacturer. ...

In 1934 Sentinel launched a new and advanced steamer - the S type which had a single-acting 4-cylinder underfloor engine with longitudinal crankshaft and an overhead worm-drive axle. It was lighter and featured a modernized driver's cab with a set-back boiler and was avilable in four, six and eight-wheel form, designated S4, S6 and S8. In spite of its sophisticated design, however, it could not compete with contemporary diesel trucks for all-round convenience and payload capacity, and was phased out in the late 1930s. It was not the end of Sentinel's involvement with steam, however, since the company built about 100 vehicles for export to Argentina as late as 1950.

In 1946 Thomas Hill'ssigned an agency agreement with Sentinel for repair and maintenance of diesel vehicles. In 1947 Sentinel offered to extend the agreement for diesel vehicles to include the steam locomotives and an agency was accepted by Thomas Hill for sales and servicing. Year 1946 (MCMXLVI) was a common year starting on Tuesday. ... Thomas Hill Ltd was a company which repaired and sold steam road vehicles, diesel and electric road vehicles and railway locomotives. ... Sales, or the activity of selling, forms an integral part of commercial activity. ...

In 1947 the company became Sentinel (Shrewsbury) Ltd, and had developed a new range of diesel lorries. Despite Sentinel's superbly engineered vehicles, sales diminished throughout the 1950s, and by 1956 the company was forced to cease lorry production. The factory was acquired by Rolls Royce for diesel engine production, and the remaining stock of parts and vehicles was taken over by Sentinel's chief dealer, North Cheshire Motors Ltd of Warrington, who formed a new company. Transport Vehicles (Warrington) Ltd in 1957 to produce Sentinel-based designs under the TVW name. Year 1947 (MCMXLVII) was a common year starting on Wednesday (the link is to a full 1947 calendar). ...

In 1963 Thomas Hill's decided to renew the loco agreement and relinquish the diesel vehicle agency, concentrating all efforts on the steam locomotive work.

Rolls-Royce agree to build diesel locomotives

Despite the various interesting developments, Rolls Royce did not consider railway locomotives to be part of their core business. They had agreed to complete all steam locos on order, and four steam receiver locos ordered by Dorman Long in 1956, but only after much consideration did Rolls royce finally agree at the end of 1957 to design and build a diesel locomotive of similar weight and power to the 200 hp steam loco that had sold so well. Thomas Hill's would assist in the design and development of these diesel machines and would be the Sole distributor. Iron-making has been known in Cleveland since the Romans found iron slags in North Yorkshire, with small-scale iron-making known to have taken place at Rievaulx, Whitby and Guisborough Abbeys in the 17th Century. ... Year 1956 (MCMLVI) was a leap year starting on Sunday of the Gregorian calendar. ... Year 1957 (MCMLVII) was a common year starting on Tuesday of the Gregorian calendar. ...

Last steam locomotives

In 1958 the last two Sentinel steam locos were delivered marking the end of an era. Two of the newly developed steam receiver locos were delivered and proved very satisfactory in service, but Dorman Long were not happy. There had been a change of heart among their engineers as well as a change of circumstances, and they were now favouring diesel locomotives. The last two steam receiver locos were built but never delivered and ultimately all four were converted to diesel hydraulic.

Diesel Production commences

The prototype Sentinel diesel locomotive was built and ready to commence trials on the S & M Railway (Shropshire and Montgomeryshire Railway?) early in 1959. It met with the approval and enthusiasm of the Company's prospective customers and before the end of the year 17 locomotives had been sold and delivered. The company was ready to produce up to complete four locomotives a month. The Shropshire and Montgomeryshire Railway was a railway running from Shrewsbury, England to Llanymynech, Wales. ...

By 1963 four Sentinel diesel models were being produced, commencing with the 34 ton chain drive 0-4-0 powered by the Rolls-Royce C6SFL six cylinder engine at 225 bhp. This was followed within a year by a 48 ton 0-6-0 rod coupled machine, fitted with a Rolls-Royce C8SFL eight cylinder engine at 325 bhp. Roller chain and sprocket Mack AC delivery truck at the Petersen Automotive Museum with chain drive visible Chain drive was a popular power transmission system from the earliest days of the automobile. ...

Two locomotives, an 0-4-0 and an 0-6-0 were constantly employed on demonstration particularly in steel works. The Sentinels demonstrated their suitability for these heavy work. Heavier, and more powerful locos were called for, particularly by the steel industry and before the end of 1963 a 75 ton 0-8-0 powered by 2 x C8SFL engines and a 40 ton 0-4-0 fitted with a C8SFL engine had been added to the range. 1963 (MCMLXIII) was a common year starting on Tuesday (the link is to a full 1963 calendar). ... In the Whyte notation for the wheel arrangement of locomotives (primarily steam locomotives), an 0-8-0 is a locomotive with eight powered driving wheels (thus four powered axles), and neither leading wheels or trailing wheels. ...

Sentinel Steelman

A shaft drive 600 hp 0-6-0 machine was now being developed at Shrewsbury to use the new DV8T engine. Considerable interest in this loco was expressed by Stewart and Lloyds mineral division at Corby who were operating more than 20 steam locos, mainly of the Austerity type. This new locomotive Steelman was eventually delivered to Corby late 1967, about two years overdue. The prototype locomotive proved satisfactory and three further machines were ordered by Stewart and Lloyds plus one by Richard Thomas and Baldwins, Scunthorpe. With Stewart and Lloyds programme to replace more than 20 steam locos over the next few years the future for Steelman looked good. Shown within Northamptonshire Geography Status: Borough Region: East Midlands Admin. ... Statistics Population: 72,660 Ordnance Survey OS grid reference: SE893102 Administration District: North Lincolnshire Region: Yorkshire and the Humber Constituent country: England Sovereign state: United Kingdom Other Ceremonial county: Lincolnshire Historic county: Lincolnshire Services Police force: Humberside Police Fire and rescue: Lincolnshire Ambulance: East Midlands Post office and telephone Post...

Unfortunately for the Company and Rolls-Royce, British Railways, seeing a potential for their Swindon built class 14 Diesel hydraulic locomotives made Stewart and Lloyds an offer of 26 locomotives around three years old at a fraction of their original cost. This locomotive had proved rather a white elephant to B.R. but powered by a 650 hp Paxman, Voith Transmission, a rod coupled 0-6-0 capable of doing the work required, it was an offer which they could hardly refuse. New locomotive sales were declining anyway, and the release of such locos onto the industrial market at such prices was disastrous, and regrettably no further "Steelman" locos were built at Shrewsbury. BR standard class 2 tanks 82039 and 82038 under construction in Swindon, 1954. ... CLASS 14 An order for 26 0-6-0 650 hp diesel-hydraulic locomotives was placed in January 1963, these to be built at British Railways Swindon Works. ... A white elephant is a supposedly valuable possession whose upkeep costs exceed its usefulness, and it is therefore a liability. ... Paxman is a major brand of diesel engines. ...

This was not to be the end of the Steelman. Some 12 years later ICI Billingham had a requirement for two heavy locomotives to replace their ageing Yorkshire Janus locomotives. Their stated wish was to buy the best and most up to date equipment available and in their efforts to achieve this aim, their engineers visited many industrial sites, and steelworks in particular. Their requirements were discussed with all UK locomotive manufacturers, and the final outcome of their investigations was an order placed to build an updated version of the "Sentinel Steelman locomotive". This order was subsequently increased to two machines which were delivered toward the end of 1981. Imperial Chemical Industries (ICI) is a British chemical group and one of the largest chemical producers in the world. ... Janus and Taurus were two prototype shunting locomotives built in 1956 and 1961 respectively by the Yorkshire Engine Company to demonstrate its wares to British Railways. ...

UK sales of Sentinel locos were now less than 10 per year, their only overseas success had been to licence the build of 36 0-6-0 locomotives for the railways in Portugal in 1965/6.

Road Vehicles

Steam Lorries

• Alley & MacLellan 5 ton vertical boiler wagon (1906)
• Super Sentinel (1923)
• Sentinel DG4 (1926)
• Sentinel DG6
• Sentinel DG8 (1929)
• Sentinel S4 (1930)
• Sentinel S6
• Sentinel S8

Diesel Lorries

• Sentinel DV44 (1948)
• Sentinel DV46
• Sentinel DV66 (1952)
• Sentinel aircraft tug

Railway Vehicles

The locomotives and railcars (with a few exceptions) used the standard Steam Lorry boilers and engine units.

BE Class

Balanced Engine

CE Class

Centre Engine

DE Class

Double Engine

100 hp Steam Locomotives

• Works no. 6515/1926, Isham Quarries, Northamptonshire, (ex-GWR no. 12)
• Works no. 7026/19??, British Quarrying Co., Criggion, Montgomeryshire
• Works no. 7299/1928, Corby Quarries, Rockingham Forest, (ex-Phoenix Tube Works)
• Works no. 9365/1945, Isham Quarries, Northamptonshire, (ex-Thomas Hill, Rotherham), "Belvedere" preserved at Northamptonshire Ironstone Railway Trust
• Works no. 9369/1946, Isham Quarries, Northamptonshire, (ex-Williams & Williams, Hooton), "Musketeer" preserved at Northamptonshire Ironstone Railway Trust
• Works no. 9615/1956, Oxfordshire Ironstone Quarries, Banbury
• LMS Sentinels 7160-3
• LMS Sentinel 7164
• LNER Class Y1
• LNER Class Y3

The Northamptonshire Ironstone Railway Trust operates a 1½ mile long heritage railway line at Hunsbury Hill, SW of Northampton. ... The Northamptonshire Ironstone Railway Trust operates a 1½ mile long heritage railway line at Hunsbury Hill, SW of Northampton. ... The official photograph of No. ... London, Midland and Scottish Railway (LMS) Sentinel No. ...

200 hp Steam Locomotives

• S&DJR Sentinels

47191 at Radstock, c. ...

Railcars

• Sentinel provided the sole RM class Sentinel-Cammell steam railcar operated by the New Zealand Railways Department.

• A Sentinel-Cammell steam railcar ([1]), one of ten supplied to the Egyptian National Railways in 1951, has been preserved by the Quainton Railway Society at the Buckinghamshire Railway Centre, England.

The RM class is the classification used by the New Zealand Railways Department (NZR) and its sucessors given to all railcars and railbuses that have operated on New Zealands national rail network. ... The NZR RM class Sentinel-Cammell steam railcar was a steam-powered railcar operated by the New Zealand Railways Department (NZR). ... The New Zealand Railways Department, or NZGR (New Zealand Government Railways), often known as the Railways, was a government department charged with owning and maintaining New Zealands rail infrastructure. ... Egyptian National Railways (ENR) is the national railway of Egypt and managed by the parastatal Egyptian Railway Authority (ERA). ... Buckinghamshire Railway Centre is a railway museum operated by the Quainton Railway Society Ltd. ... Motto: (French for God and my right) Anthem: God Save the King/Queen Capital London (de facto) Largest city London Official language(s) English (de facto) Unification    - by Athelstan AD 927  Area    - Total 130,395 km² (1st in UK)   50,346 sq mi  Population    - 2006 est. ...

Specials

The Doble Shunter

LMS Sentinel 7192 Official photograph of No. ...

The Double Locomotive

A special locomotive was produced at Sentinel, for Dorman Long and named "Princess". It consisted of 2 x 0-6-0 chassis coupled together to articulate. One unit carried the cab, a 5 drum oil fired Woolnough boiler and two 100 hp engines. The other unit housed the water and fuel tanks and also two more 100 hp engines providing a total of 400 hp. It was considered a magnificent machine by the staff but unfortunately was the only one of its kind ever built. Iron-making has been known in Cleveland since the Romans found iron slags in North Yorkshire, with small-scale iron-making known to have taken place at Rievaulx, Whitby and Guisborough Abbeys in the 17th Century. ... 0-6-0 is also the emergency telephone number in Mexico, similar to the United Statess 9-1-1. ... A chassis (plural: chassis) consists of a framework which supports an inanimate object, analogous to an animals skeleton; for example in the construction of an automobile or of a firearm. ... Cab Short for cabriolet, a light, horse-drawn carriage which replaced the heavier hackney carriage in the 19th century as the vehicle for hire of choice in Paris and London, and were the forerunners of modern taxicabs. ... A boiler is a closed vessel in which water or other fluid is heated under pressure. ...

The Gyro Locomotive

Another special was the Gyro Locomotive. Based on a 200 hp 4 wheeled 0-4-0 frame fitted with two "gyro units" (see Flywheel energy storage ) made by Oerlikon of Switzerland. The gyros were principally a 3 ton horizontal flywheel enclosed vessel filled with low pressure hydrogen. A vertically mounted electric motor/generator was directly coupled to the flywheel shaft. The motor took its power from an overhead supply via a type of pantograph arm raised or lowered by the driver. Power could only be taken whilst the loco was stationary. When the gyros had reached the required speed, the driver would lower the pantograph, switch the motor to generation and controlled the locomotive in a similar way to a diesel electric loco. Charging posts had to be strategically placed around the site. Under the Whyte notation for the classification of steam locomotives, 0-4-0 represents one of the simplest possible types, that with two axles and four wheels, all of which are driven. ... NASA G2 flywheel Flywheel Energy Storage (FES) works by accelerating a rotor to a very high speed and maintaining the energy in the system as inertial energy. ... Oerlikon has different meanings: Zürich Oerlikon: a quarter in the northern part of Zürich, Switzerland Oerlikon-Bührle: a company in Zürich, Switzerland that also owns Bally Shoes, Oerlikon Contraves, Pilatus Aircraft and Island Aircraft Oerlikon Contraves: a Swiss anti-aircraft artillery manufacturer founded in Zürich... A pantograph is a device that collects electric current from overhead lines for electric trains or trams. ... A locomotive (from Latin loco motivus) is a railway vehicle that provides the motive power for a train, and has no payload capacity of its own; its sole purpose is to move the train along the tracks. ...

This machine was specially built for the National Coal Board (NCB) at Seaton Delaval. It operated very satisfactorily but was eventually taken out of service because of site development and its restricted field of operation. In April 1965 it was converted for the NCB to a diesel hydraulic machine. The National Coal Board (NCB) was the nationalised British coal mining company. ... Seaton Delaval is a village in the Blyth Valley district of Northumberland, England, with a population of about 7,000. ... 1965 (MCMLXV) was a common year starting on Friday (the link is to a full 1965 calendar). ... A locomotive (from Latin loco motivus) is a railway vehicle that provides the motive power for a train, and has no payload capacity of its own; its sole purpose is to move the train along the tracks. ...

The Receiver Locomotives

The Receiver Locomotives were another special type built just for Dorman Long and were based on the idea of a Fireless locomotive. Iron-making has been known in Cleveland since the Romans found iron slags in North Yorkshire, with small-scale iron-making known to have taken place at Rievaulx, Whitby and Guisborough Abbeys in the 17th Century. ... Preserved Porter Locomotive Company No. ...

Steam locomotives used by UK Main Line Companies

• LNER Class Y1
• LNER Class Y3
• LNER Class Y10
• S&DJR Sentinels
• LMS Sentinels 7160-3
• LMS Sentinel 7164
• LMS Sentinel 7192

47191 at Radstock, c. ... The official photograph of No. ... London, Midland and Scottish Railway (LMS) Sentinel No. ... Official photograph of No. ...

See also

• Thomas Hill (Rotherham) Ltd
• Geared steam locomotive

Thomas Hill Ltd was a company which repaired and sold steam road vehicles, diesel and electric road vehicles and railway locomotives. ... A geared steam locomotive is a type of steam locomotive which uses reduction gearing in the drivetrain, as opposed to the common directly-driven design. ...

Sources

• Ian Allan ABC of British Railways Locomotives, 1948 edition

External links

• The Sentinel Drivers Club
• British Trucks: Sentinel
• Photos of Sentinel Steam Waggons
• A Czech site about Skoda-Sentinels
• LNER Encyclopedia: LNER Y1 and Y3 Sentinel Shunters
• History of Sentinel Waggon Works (BRC)