L. Gardner and Sons

Last updated

L. Gardner and Sons
Company type Limited company
Industry Mechanical engineering
Founded1868;156 years ago (1868) in Hulme, England
FounderLawrence Gardner
FateTaken over
Successor
Headquarters,
England
ProductsMarine, stationary and automotive diesel engines

L. Gardner and Sons Ltd was a British builder of diesel engines for stationary, marine, road and rail applications. The company was founded in Hulme, Manchester, England in 1868. It started building engines around 1895. The firm ceased engine production in the mid-1990s.

Contents

Origin

About 1868 Lawrence Gardner set up as a sewing machine maker in Upper Duke Street, Stretford Road, Hulme, Manchester. He died in 1890, but the business was continued by his sons under the name L. Gardner & Sons Ltd.

Gas and diesel engines

Barton Hall Engine Works, Manchester Gardner Engines.jpg
Barton Hall Engine Works, Manchester

From about 1895 the company was building gas engines and, in 1899 it moved into Barton Hall Engine Works, Patricroft, Manchester.

In 1903 it became a limited company, L Gardner and Sons Ltd. Norris and Henty Ltd, of London, were appointed as sales agents.

Diesel engine production began in around 1903. In 1912 a new sales subsidiary, Norris, Henty and Gardners Ltd, was formed.

During World War I (1914–1918) the company made munitions and parts for heavy guns and engines for tanks.

Automotive engines

During the 1920s there was rapid development in the design of diesel engines. In 1929 a Gardner "4L2" marine engine was fitted into a Lancia bus. This conversion was successful and prompted Gardner to introduce the "LW" series of diesel engines, designed especially for road vehicles but later modified and supplied as a marine engine with factory-fitted bilge pumps. The LW engine was a modular design, with separate cast iron cylinder blocks and cylinder heads comprising either 2 or 3 cylinders. A 5-cylinder engine would thus use a "2" and a "3", whereas a 6-cylinder engine could have either 3 "2"s or 2 "3"s. Boat engines had a cast iron crankcase, whereas (in the interest of lightness) road vehicles would have an aluminium alloy crankcase. Any boat engine with an alloy crankcase would be a marinised road engine.

The Gardner engine of X24 X-24 submarine engine.jpg
The Gardner engine of X24

During the 1930s a number of LW-series engines (usually 4LWs, but occasionally 6LWs) were installed in large luxury cars including Lagondas, Bentleys and Rolls-Royces. The Gardner engine's reliability and economy (tests showed that even a two-ton Bentley could achieve 30 miles per gallon of fuel while having a top speed of 80 mph), coupled to its remarkable refinement and smooth running abilities, made it the only suitable compression-ignition engine at the time.

During World War II (1939–1945) Gardner's war work consisted mainly of building diesel engines of their own design. Their 4LK bus engines were also used as the main powerplant in the Royal Navy's X class and XE class midget submarines. [1]

Post-war diesels

After the war the 'LW' diesel engine continued to be built in large numbers for lorries and buses and was later supplemented by the more modern 'LX'. In the mid-sixties, the LW range was upgraded to develop 20 bhp per cylinder, and known as LW20. The 6LX was upgraded in 1967 from 150 bhp @1700rpm to 180 bhp @1850rpm. An 8-cylinder version was developed which developed 240 bhp @ 1850rpm, and was said to be the smoothest running automotive diesel ever built. The larger '6L3' and '8L3' engines were used in railway locomotives, such as British Rail Class 01 and 04 and also in vessels of up to 120 feet such as MV Havengore, and maxi yachts Condor and Condor of Bermuda .

Takeover and decline

In June 1976, Rolls-Royce acquired a 17% shareholding, [2] [3] but, in December 1977, the business was purchased by Hawker Siddeley. [4] [5]

In the summer of 1986, after months of denials, Perkins Engines purchased Gardner to complement their line of lighter diesel engines. [6] Production was then shut down until October, because Gardner's truck engine market share had slumped precariously, although Gardner's market for buses and coaches was doing better. [7]

L. Gardner and Sons ceased production of new engines in the early 1990s. The introduction of emissions regulations for road-going Gardner diesels would have required the development of significantly modified, or totally new, engine designs, and in the marine market there was a shift away from big, low-speed, high-torque engines such as Gardners, towards adapted high-speed automotive turbodiesels.

Gardner automotive engines list

A Sectioned 6LW of 1961 at the Anson Engine Museum from a Bristol Commercial Vehicles bus. Gardner engine 6LW of 1961 (sectioned) - IMG 2583.JPG
A Sectioned 6LW of 1961 at the Anson Engine Museum from a Bristol Commercial Vehicles bus.

These were often fitted as marine equipment (or retro fitted) but initially designed as automotive use. The alloy crankcase is the clue to the original design intentions from Gardner. Any engine with a cast iron crankcase is marine or stationary use.

Common power units, not all are listed:

When Hugh Gardner designed the last natural aspiration engine's in the late 1970s (the LXC being the last natural induction before turbocharging of the LXCT) the advertised power was taken at Gross power (Gross power being less any auxiliaries) as opposed to Installed. With the earlier LX'B' engine's the engine's, power was often down played to Installed power. I.E a Gardner-180 was a 188 gross BHP engine, advertised as 180 BHP. This was opposite to how a lot of other manufacturers advertised their products, and how Gardner themselves had previously stated power ratings of the pre LX series engines. For automotive use, power was important to suit the minimum HP requirements to weight ratio. The LXC's power was advertised as gross, with an Installed power being less. Hence a 265 LXC was actually Installed at 258.5 BHP as example. [8]

Preservation

The Anson Engine Museum has an extensive collection of historic Gardner engines.

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References

  1. "Gardner Engine Forum, number 11, Autumn 2006" (PDF).
  2. Gardner vs Rolls in takeover move Commercial Motor 25 June 1975 page 3
  3. Rolls-Royce buys stake in Gardner Truck & Bus Transportation August 1976 page 37
  4. Hawker looks set to get Gardner Commercial Motor 22 July 1977 page 4
  5. Hawker upstages Rolls-Royce Motors The Times 23 December 1977
  6. Barden, Paul, ed. (June 1986). "Truckmonth: Perkins snaps up Gardner". TRUCK. London, UK: FF Publishing Ltd: 31.
  7. Barden, Paul, ed. (December 1986). "News: Gardners go up". TRUCK. London, UK: FF Publishing Ltd: 25.
  8. Tangent Engineering Archived 17 December 2013 at the Wayback Machine

Sources

Further reading

Commons-logo.svg Media related to Gardner engines at Wikimedia Commons