Worthington Simpson Duplex

Source

Worthington-Simpson Ltd., Newark, England.

Instructions for the Installation, Operation and Maintenance of types GS(A), GS(B), LS(B) and LS(C) Steam Horizontal Duplex Piston Pumps-May 1962 Edition.

Description

There are two principle versions, type GS (General Service) and type LS (Light Service). The type GS specifications are shown below.

GS (A) GS (B)
Size
SteamxPumpxStroke
Gallons / hour
(water)
Piston Speed
ft per minute
Size
SteamxPumpxStroke
Gallons / hour
(water)
Piston Speed
ft per minute
3"x1"x3" 270 37 4"x2"x4" 1260 47
3"x2"x3" 510 37 5"x3"x5" 2340 53
3"x2"x4" 840 47 6"x4"x6" 3420 60
- - - 7"x5"x6" 3420 60
- - - 7"x5"x10" 2700 74
- - - 9"x5"x10" 2700 74
- - - 10"x6"x10" 2700 74
- - - 10"x7"x10" 2700 74

The type LS specifications are shown below.

LS (B) LS (C)
Size
SteamxPumpxStroke
Gallons / hour
(water)
Piston Speed
ft per minute
Size
SteamxPumpxStroke
Gallons / hour
(water)
Piston Speed
ft per minute
4"x3"x4" 2400 47 7"x7"x10" 13680 74
5"x4"x5" 4440 54 9"x7"x10" 13680 74
6"x5"x6" 7380 61 7"x8"x10" 20400 74
7"x6"x10" 9900 74 9"x8"x10" 20400 74
9"x6"x10" 9900 74 - - -

Construction

The steam end cylinders, cradle and chest are cast iron with slide valves. The pistons are cast iron with iron rings. The piston rod stuffing boxes and glands for type GS(A) are gunmetal with bronze glands, whilst types GS(B), LS(B) and LS(C) are cast iron with bronze glands below 6" stroke. The valve rod glands are bronze, whilst the valve gear levers are forged steel carried on cast iron cross stands. The drain cocks are bronze with drip feed oil lubricator on the steam chest.

The liquid end cylinders for types GS(A), GS(B) and LS(B) are cast iron, integral with the steam cylinder for the 3" stroke and separate for all other sizes. The cylinder liners and pistons are bronze. The piston rod stuffing boxes are gunmetal with bronze glands below 6" stroke for types GS(A) and cast iron, bronze bushed for types GS(B), LS(B) and LS(C). The piston rods are bronze with bronze disc valves, seats, guards and springs. The air cocks are bronze.

Collection

There are seven Worthington Simpson Duplex steam pumps in the collection.

  • Duplex horizontal 3x1x3, No.5019498, 1946, Ex-Durley Light Railway
  • Duplex horizontal 3x2x3, No.D18K, 1974, St. Anthonys Tar Plant
  • Duplex horizontal 3x2x3, No.5087642, 1951, Hockley, Essex
  • Duplex horizontal 3x2x4, No.D308B, 1970, Ex-Mid-Hants Rly
  • Duplex horizontal 4x2x4, No.37315, 1930, West Ham Power Station
  • Duplex horizontal 4x3x4, No.5027836, 1950, Greenwich Gas Works
  • Duplex horizontal 5x3x5, No.5205964, 1952, Shellhaven Refinery
  • Duplex horizontal 6x4x6, No.D107H, 1973, St. Anthonys Tar Plant - Sold

Duplex horizontal 3x1x3, No.5019498, 1946, Ex-Durley Narrow Gauge Light Railway, Hampshire.

Size: 3" steam cylinders, 1" pumping cylinders with 3" stroke
Type: General Service A

This pump was acquired on Saturday, 6th October 2012 at the Durley Narrow Gauge Light Railway Auction where all the assets were being sold following the death of the former owner Barry Curl.

The previous history of this particular pump is not known, but from its serial number it is estimated to have been manufactured in the mid 1940's.

This pump is the smallest in the range. It has the standard one piece casting incorporating all cylinders supported upon a central cast foot. The central fulcrum casting however, has an integral bracket for a mechanical lubricator. It was built for water duties as it is fitted with bronze rods, screw glands, valves and seats.

Following full restoration it was first tested on air on 22nd December 2012 and ran well considering it has been out of use for years.

Its first public display, running on air, was at the 1st January 2013 rally at Twyford Waterworks.

Duplex horizontal 3x2x3, No.D18K, 1974, St. Anthonys Tar Plant

Size: 3" steam cylinders, 2" pumping cylinders with 3" stroke
Type: General Service A

Purchased new by Thomas Ness as part of the refurbishment of their Wilton Tar Distillation Unit, this pump was supplied with stainless steel rods and valves, cast iron screw glands and an integral mechanical lubricator bracket. It was one of two crude benzole reflux pumps.

St Anthony's tar plant closed in 1978, ending tar distillation on that site since 1919. During the next few years all pumps and specialist equipment were dismantled and transferred to Caerphilly Tar Plant, a sister works in South Wales, for storage.

This pump was acquired from Caerphilly in 1986, it has been stripped, cleaned, painted and reassembled. It is complete and in working order for running on compressed air. This pump is fitted with a lubricator bracket as an integral part of the valve gear fulcrum casting, however, unusually for this size of pump the main casting is in two pieces; the pumping cylinders being a separate casting.

Duplex horizontal 3x2x3, No.5087642, 1951, Hockley, Essex

Size: 3" steam cylinders, 2" pumping cylinders with 3" stroke
Type: General Service A

This pump was acquired in October 2007 and believed to have been used at a Nursery and Mushroom farm in Hockley, Essex. It has been out of use for years and was seized solid.

The pump has the standard one piece casting unlike the other 3x2x3 pump in the collection. It was build for water duties as it is fitted with bronze rods and screw glands. It has been fully stripped, restored and run on air in July 2008 trouble free.


Duplex horizontal 3x2x4, No.D308B, 1970, Ex-Mid Hants Railway

Size: 3" steam cylinders, 2" pumping cylinders with 4" stroke
Type: General Service A

This pump was acquired in February 2013 from Colin Chambers, MD, Mid Hants Rly. It has been out of use for many years, seized solid and had suffered impact damage to the LHS piston rod, although it was virtually complete. The pump has bronze rods and screw glands; designed for pumping water. There are 3 sizes of pump in the General Service A specification and this pump is the largest of the 3. It has a separate liquid cylinder casting and originally had a central support foot that is now missing.

The pump has been stripped, cleaned, primed and re-painted. The cast iron cross stand supporting the valve gear levers was found to be seized solid, but eventually the levers were dismantled and freed after much work. Initially an attempt was made to straighten the LHS bronze piston rod by heating in situ but the result was not good enough and a new rod will be needed if the pump is required to run in the future. At present (2013) it has been re-assembled as a non-operational pump; it is however, complete.

In late 2014 it was decided to restore the pump to working order so the damaged LHS piston rod was removed and a detailed drawing made for a replacement rod. A new brass rod has subsequently been purchased and machined to match the original. It was noted that as the length of the steam and water piston blocks were different, so each tapered section had to be individually machined to allow for the different taper angle. The pump has been re-assembled and on 15th July 2015 tested on compressed air. The pump ran well first time, although the valve shafts and linkages were showing signs of wear; all glands have been repacked and subsequent testing on air produced a smooth and balanced running pump.

Duplex horizontal 4x2x4, No.37315, 1930, West Ham Power Station

Size: 4" steam cylinders, 2" pumping cylinders with 4" stroke
Type: General Service B

This pump predates the Worthington-Simpson alliance at Newark and is plated Worthington Pumping Engine Company London, manufactured in New York USA.

Originally acquired by the North Woolwich Railway museum from West Ham Power Station, when the station closed in the 1960s. Obtained from the museum as surplus to requirements in November 2002.

Partially dismantled and awaiting restoration.

Duplex horizontal 4x3x4, No.5027836, 1950, Greenwich Gas Works

Size: 4" steam cylinders, 3" pumping cylinders with 4" stroke
Type: Light Service B

This pump was purchased by the South Eastern Gas Board for the Metropolitan Gas Works, East Greenwich as part of their new Wilton Tar Distillation Unit for their No. 12 Plant. This pump was supplied with a mechanical lubricator and bracket and was one of two crude tar transfer pumps.

East Greenwich gas works and tar plant closed in the early 1970's and the equipment offered for sale prior to site demolition. The cleared site is now the home of the Greenwich O2 Arena. During the next few months many pumps and specialist equipment were purchased, dismantled and transferred to Caerphilly Tar Plant in South Wales for storage/spares.

This pump was never installed and was acquired from Caerphilly in 1989. It is complete, in storage and awaits restoration.

Duplex horizontal 5x3x5, No.5205964, 1952, Shellhaven Refinery

Size: 5" steam cylinders, 3" pumping cylinders with 5" stroke
Type: General Service B

This pump originated from the Shellhaven Oil Refinery on the Thames Estuary in Essex and was purchased by a former employee following partial closure of the works. The pump was subsequently acquired in 2002 and is now stored awaiting restoration.


Duplex horizontal 6x4x6, No.D107H, 1973, St. Anthonys Tar Plant - Sold no longer part of the collection.

Size: 6" steam cylinders, 4" pumping cylinders with 6" stroke
Type: General Service B (Heavy Duty HD)

This pump was purchased new by Thomas Ness as part of the refurbishment of their Wilton Tar Distillation Unit at St Anthony's Tar Plant, Walker, Newcastle-upon-Tyne in 1973. This pump was supplied with a mechanical lubricator and was one of two crude tar transfer pumps.

St Anthony's tar plant closed in 1978, ending tar distillation on that site since 1919. During the next few years all pumps and specialist equipment were dismantled and transferred to Caerphilly Tar Plant, a sister works in South Wales for storage.

The pump was used infrequently for unloading creosote oil and blending bitumen products.

Unfortunately prior to it being acquired from Caerphilly in 1992, it has suffered some frost damage to the pumping end. This pump has since been sold and is no longer in the collection.