Sentinel

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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.

[edit] History

[edit] Alley & MacLellan

The company began life in 1906 as Alley & MacLellan based in Polmadie, Glasgow. 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.

[edit] Move to Shrewsbury

The company 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.

Alley & MacLellan's 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.

In 1917, the company was bought by William Beardmore & Co Ltd.

[edit] Sentinel Waggon Works (1920) Ltd

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.

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 available 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; the company built about 100 "S" type vehicles for export to Argentina as late as 1950, for use by the Río Turbio coal mine.^[1] It has been stated that Sentinel were never paid for the last batch of the Rio Turbio production run. At least two of the Rio Turbio Waggons survive in Argentina to this day.

In 1946 Thomas Hill's signed 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.

[edit] Sentinel (Shrewsbury) Ltd

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.

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.

[edit] 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.

[edit] 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.

[edit] 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 a maximum of four locomotives a month.

By 1963 four different 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 of 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 of 325 bhp.

These Sentinels demonstrated their suitability for heavy work, but 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.

[edit] 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 in late 1967, about two years overdue. The prototype locomotive proved satisfactory and three more were ordered by Stewart and Lloyds and 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.

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. The Class 14 locomotive had proved rather a white elephant for 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 that Stewart and Lloyds 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.

This was not to be the end of the Steelman. Some 12 years later ICI Billingham wanted 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 for an updated version of the "Sentinel Steelman locomotive". This order was subsequently increased to two machines which were delivered toward the end of 1981.

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

[edit] Road Vehicles types

Sentinel Steam lorry s/n 7651 of 1928 reg no.BS9215 at Lymswold show 2008

Brass Makers plate

[edit] 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
• Sentinel Super of 1928 reg BS9215 s/n 7651 - Image above

[edit] Diesel Lorries

• Sentinel DV44 (1947)
• Sentinel DV46
• Sentinel DV66 (1952)
• Sentinel aircraft tug

[edit] Railway Vehicles

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

[edit] BE Class

Balanced Engine

[edit] CE Class

Centre Engine

[edit] DE Class

Double Engine

[edit] 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

[edit] 200 hp Steam Locomotives

• LNER Class Y10
• S&DJR Sentinels
• Works no. 7109/1927, Croydon Gasworks No. 37 "Joyce", preserved

[edit] Railcars

• The London and North Eastern Railway bought 80 Sentinel steam railcars between 1925 and 1932.

• Sentinel provided the sole NZR 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.

[edit] Specials

[edit] The Doble Shunter

• LMS Sentinel 7192 – so-called as it was fitted with an Abner Doble boiler

[edit] 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.

[edit] 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.

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.

[edit] 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.

[edit] 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

[edit] Preserved Machines

[edit] Steam wagons (lorries)

Know Sentinel Steam wagons in Preservation. To edit Table Click Here.

Preserved machines built by Sentinel (Shrewsbury) Ltd

view • talk • edit Engine No.	Name	Build Date	Type	Weight	Power nhp	Reg No.	Owner	Image	Other info
Sentinel No. 753	-	1914	Wagon	-	?	V 3057	Grampian Transport Museum
Sentinel No. 1170	Old Man	1916	Wagon std	8 ton	?	V 513	Owner ?
Sentinel No. 1286	-	1916	Wagon	-	?	AW 2964	Glasgow Transport Museum
Sentinel No. 1465	-	1917	Wagon Supper	6 ton	?	AW 3321	Owner ?
Sentinel No. 1488	Old No 1	1917	Wagon	-	?	AW 3407	Coors Brewery Museum		This is the Former Bass Brewery Museum (believed shut down by Coors currently)
Sentinel No. 1716	Unrepeatable	1917	Wagon Std	5 ton	?	AW 3833	Owner ?		Was at Barleylands Country Show
Sentinel No. 1718	-	1917	Wagon	-	?	AW 3835	The Science Museum		In storage.[2]
Sentinel No. 1960	-	1918	Wagon std	5 ton	?	AW 4131	Owner ?		Was at Strumpshaw Hall Steam Museum Rally
Sentinel No. 3549	Name	1920	wagon std	6 ton	?	AW 6481	Owner ?		At Bedfordshire Steam & Country Fair Livery of "The Cement Marketing Company London"
Sentinel No. 3899	-	date built ?	Wagon	?	?	ET 1969	Owner ?
Sentinel No. 5256	-	1926	Wagon super	6 ton	?	KC 5071	Owner ?		At Bedfordshire Steam and Country Fayre in 2008
Sentinel No. 5260	Tiger	1924	Wagon super	6 ton	?	RS 5540	Owner ?		At GDSF in 2008 (photo ? )
Sentinel No. 5407	Midnight	1924	Wagon super	6 ton	?	FA 1803	Owner ?
Sentinel No. 5638	-	1924	Wagon	6 ton	?	-	Owner ?		Not in UK (see steam scene)
Sentinel No. 5644	The Elephant	1924	Tractor	?	?	757 CTC	Owner ?
Sentinel No. 6072	-	1925	Wagon class SUP	6 ton	power	IY 8056	Owner ?
Sentinel No. 6079	-	1925	wagon	6 ton	? nhp	YL 2835	R. Goodwill, Yorkshire		At Duncombe Park & Pickering 2009
Sentinel No. 6725	-	1926	SW - Supper	6 ton	? nhp	KA 5574	G. Woolley, Kempston	Photo to add	Rushden Transport Cavalcade 2008
Sentinel No. 6729	Name	1926	type	weight	power	Reg no. ?	Owner ?
Sentinel No. 6842	-	1927	Tractor	-	?	KA 6147	Liverpool Museum		In the Liverpool Museums collection (occasional appearances at transport days)
Sentinel No. 6887	Name	date built	type	weight	power	Reg no. ?	Owner ?
Sentinel No. 6979	Name	date built	type	weight	power	Reg no. ?	Owner ?
Sentinel No. 6725	-	1926	SW type Super	? ton	? nhp	KA 5574		Photo to add	Rushden Transport Cavalcade 2008
Sentinel No. 7525	Name	1928	type	weight	power	Reg no. ?	Owner ?
Sentinel No. 7591	-	1928	SW Type Super DG 4	5 ton	? nhp	WE 3236	H.P.Bell, Leven		At Harewood 2008 & Pickering 2009 3-way tipping Wagon.
Sentinel No. 7651	-	1928	SW	-	5 hp	BS 9215	M. Johnson		Lincoln Steam Rally & Lymswold Vintage Rally 2008
Sentinel No. 7954	Shrewsbury Knave	1929	Wagon Super	6 ton	?	PG 2414	Owner ?
Sentinel No. 7966	Nippy	1929	Wagon type DG6	6 ton	? nhp	UW 2522	B. Cousins		First rally since 7 year restoration - Bloxham Steam Rally
Sentinel No. 8122	-	1929	Wagon DG4 (tanker)	6 ton	?	OF 5783	Owner ?		At the Gloucestershire Steam Extravaganza Kemble in 2008
Sentinel No. 8351	The Aberdeen Docker	1930	Wagon DG6	?	?	RG 1417	Owner ?		At the Bedfordshire Steam & Country Fayre in 2008
Sentinel No. 8393	HMS Sultan	1930	Wagon super	-	?	DX 9048	Owner ?	To add	At GDSF in 2008 & Kemble 2009
Sentinel No. 8448	-	1930	Wagon SD DG4	?	?	UX 8724	Owner ?		at the Gloucestershire Steam Extravaganza Kemble in 2008
Sentinel No. 8454	-	1931	Wagon DG4 3 way tipper	?	?	UX 7958 ?	Formerly Buxworth Steam Co., now in Ireland ?		Sold at Cheffins Auction Feb 2003 for £60,000.(OG no. 158, April 2003)
Sentinel No. 8571	-	1931	Wagon DG4P	6 ton	?	KF 6482	Owner ?		AT Bromyard Gala & Kemble 2008
Sentinel No. 8590	Elizabeth	1931	Wagon DG6P (Bus conversion)	11 ton	?	GT 2827	Vern		The Old Glory Steam Bus Runs trips round Whitby
Sentinel No. 8595	-	1931	Wagon Super DG4	?	?	TM 9486	Charles and Roger Mathews collection, Ontario Canada		Featured in OG no. 158, April 2003
Sentinel No. 8646	-	193?	Wagon Super DG4P	?	?	-	Charles and Roger Mathews collection, Ontario Canada		Featured in OG no. 158, April 2003
Sentinel No. 8714	Martha	1932	Wagon DG4P (Bus)	7 ton	?	KG 1123	Owner ?		A Steam bus conversion
Sentinel No. 8756	Brutus	1933	Tractor TDG	11 ton	?	VN 4294	Bressingham Steam Museum		In the collection at the Bressingham Steam Museum, Norfolk
Sentinel No. 8803	-	1933	Wagon type DG6	? ton	10 nhp ?	YD 7012	I, Fearnley, Leeds		At Harewood, Driffield 2008 & Duncombe Park, Masham 2009
Sentinel No. 8821	-	1933	Wagon S6	?	?	BRF 200	Owner ?		In Livery of Tarmac
Sentinel No. 8827	Kirsty II	1933	Wagon S4	?	?	UJ 2225	Owner ?
Sentinel No. 8843	-	1933	Wagon S4	?	?	UJ 2112	Owner ?
Sentinel No. 8850	The Lion	1933	Wagon S4	?	?	FJ 9248	Owner ?		At GDSF 2001 as an as found wreck.
Sentinel No. 8928	-	1934	Wagon S6	?	?	JG 4222	R. Hazell & Sons collection		At Woodcote Rally 2009
Sentinel No. 8933	-	1934	Wagon S4	?	?	WV 4705	Owner ?
Sentinel No. 8945	His Lordship	1934	Wagon S4F	6 ton	?	RG 4187	Owner ?
Sentinel No. 9003	Pendle Lady	1934	Wagon S4	?	?	VE 9963	Owner ?		Shown at Southport Vintage Rally Scorton & Cumbria2009
Sentinel No. 9016	-	1934	Wagon S4	?	?	HV 3865	Owner ?
Sentinel No. 9032	-	1934	Wagon S4	6 ton	?	US 5430	Owner ?		At GDSF 2008
Sentinel No. 9074	Proctors Pride	1934	Wagon S4	6 ton	?	BEV 466	R. Hazell & Sons collection		At Bloxham Steam Rally & Woodcote Rally 2009
Sentinel No. 9075	Holmevalian	1934	Wagon S4	6 ton	?	BEV 467	P & K Jewel		At GDSF 2008 & Lister Tyndale 2009
Sentinel No. 9084	-	1934	Wagon S6	?	?	FH 8870	Owner ?
Sentinel No. 9097	King Arthur	1934	Tractor TDG	?	?	ARE 195	Owner ?		At GDSF 2008
Sentinel No. 9105	The Shrewsbury Flyer	1934	Wagon S8	? tons	? nhp	UJ 3652	R. Hazell & Sons collection		At Woodcote Rally 2009
Sentinel No. 9142	-	1934	Wagon S6T	?	?	OAS 562	Owner ?
Sentinel No. 9151	-	1934	Steam Bus	?	?	JH 9994	Owner ?
Sentinel No. 9192	-	1935	Wagon S4	5 ton	?	CML 781	C. M. Peach & Son, Birmingham		At GDSF 2008 & Stourport Steam Rally 2009
Sentinel No. 9208	-	1935	Wagon S4	?	?	BYL 485	Owner ?		At Barleylands Show in 2008
Sentinel No. 9213	An Gaidmeal	1935	Wagon S4	?	?	UJ 5862	Owner ?
Sentinel No. 9236	Queen Mary	1936	Tractor TDG	?	?	AMM 483	Owner ?
Sentinel No. 9242	-	1936	Wagon S4	?	?	-	Charles and Roger Mathews collection, Ontario Canada		Featured in OG no. 158, April 2003
Sentinel No. 9277	Peggy	1937	wagon S4	?	?	DKN 687	Owner ?		At GDSF in 2008
Sentinel No. 9278	-	1936	Wagon S4	6 ton	?	BTD 868	Owner ?
Sentinel No. 9293	-	1937	Wagon S4	6 ton	?	UJ 9497	Owner ?		At GDSF in 2008 & St.Albans Steam Rally 2009
Sentinel No. 9307	Prince	1937	Wagon S4	6 ton	?	DYY 134	Owner ?		At Gloucester Steam Extravaganza in 2008
Sentinel No. 9593	-	1937	Tractor SUP	?	?	SV 5525	Owner ?		Youngest Sentinel in preservation in UK[3]
Sentinel No. ?	-		SW		? hp			Photo to add	xyz Steam Rally 2008
Sentinel No.	Name	date built	type	weight	power	Reg no. ?	Owner ?

[edit] Scale Models (Live steam)

1/2 size Sentinel steam wagon Ruthus at Elvaston Steam Rally in 2009

• Ruthus a 1999 built 6" Scale Steam wagon T613 SDT

[edit] Diesel Lorries

Template:PML Sentinel Lorry

[edit] See also

• List of Truck Manufacturers
• List of Engine Manufacturers
• Wikipedia:Thomas Hill (Rotherham) Ltd - Rail Locomotives
• Wikipedia:Geared steam locomotive
• Rolls-Royce Limited
• Shows and Meets
• Collections

[edit] References

[edit] Sources

• Ian Allan ABC of British Railways Locomotives, 1948 edition

[edit] External links

• The Sentinel Drivers Club (updated Sept 2009)
• British Trucks: Sentinel
• Photos of Sentinel Steam Waggons
• A Czech site about Skoda-Sentinels
• LNER Encyclopedia: LNER Y1 and Y3 Sentinel Shunters
• LNER Encyclopedia: The Sentinel Steam Railcars
• History of Sentinel Waggon Works (BRC)

This page uses some content from Wikipedia. The original article was at Sentinel. The list of authors can be seen in the page history. As with Tractor & Construction Plant Wiki, the text of Wikipedia is available under the GNU Free Documentation License.