Source
Worthington-Simpson Ltd., Newark, England.
Description
There are two principle versions, boiler feed and light service. The boiler feed specifications are shown below.
| Boiler Feed | |||||
| Size SteamxPumpxStroke |
Gallons / hour (water) |
Piston Speed ft per minute |
Size SteamxPumpxStroke |
Gallons / hour (water) |
Piston Speed ft per minute |
| 3"x1½"x3" | 72 | 40 | 10"x7"x15" | 4100 | 18 |
| 3½"x2¼"x4" | 192 | 33 | 10"x7"x18" | 4640 | 17 |
| 4"x2½"x4" | 240 | 33 | 10"x7"x21" | 4770 | 15 |
| 4½"x2¾"x6" | 360 | 27 | 10"x7"x24" | 5094 | 14 |
| 5½"x3½"x7" | 660 | 25 | 12"x8½"x24" | 7416 | 14 |
| 6½"x4½"x8" | 1140 | 23 | 14"x10"x24" | 10440 | 14 |
| 7"x5"x12" | 1760 | 19 | 16"x11"x24" | 12540 | 14 |
| 8"x6"x12" | 2520 | 19 | 16"x12"x24" | 15000 | 14 |
| 10"x7"x12" | 3480 | 19 | - | - | - |
The light service specifications are shown below.
| Light Service | |||||
| Size SteamxPumpxStroke |
Gallons / hour (water) |
Piston Speed ft per minute |
Size SteamxPumpxStroke |
Gallons / hour (water) |
Piston Speed ft per minute |
| 3½"x4"x4" | 1180 | 60 | 7"x8"x12" | 8700 | 35 |
| 4½"x5"x6" | 2340 | 50 | 8"x10"x12" | 13550 | 35 |
| 4½"x6"x6" | 3370 | 50 | 10"x10"x12" | 13550 | 35 |
| 6½"x7"x8" | 6350 | 50 | 10"x12"x12" | 19400 | 35 |
| 6"x7"x12" | 6630 | 35 | 12"x14"x12" | 16500 | 35 |
Construction
The steam cylinder is cast iron and the valve gear is of 'marine' type and is self aligning. The auxiliary plunger is cast iron fitted with snap rings. The steam piston rod is steel and the pumping rod is bronze with studded glands. The pumping end is cast iron, fitted with gunmetal liner or entirely of gunmetal. The pump valve, seats and guards are bronze.
Collection
There is one Worthington Simpson Simplex steam pump in the collection.
- Simplex vertical 4x2½x4, No.5004997, 1943, HM Dockyard Portland
Simplex vertical 4x2½x4, No.5004997, 1943, HM Dockyard Portland
Size: 4" steam cylinder, 2½" pumping cylinder with 4" stroke.
The history is unknown, but the pump is believed to have been used in H M Dockyard Portland as a boiler water feed pump. It was obtained by an enthusiast in the early 1970's from Portland and remained in store for 23 years until purchased in 1993.
The pump is complete and has been fully stripped, cleaned and repainted. The small bore of the steam passages tend to indicate that the pump was designed to run on high pressure steam. Initial attempts to run on compressed air have been unsuccessful.
