demonstration water pump
Datecirca 1820
Inventory NumberDW0820
ClassificationPump model
Subject
Maker
French
?
Cultural Region
Dimensions59 x 42 x 27.6 cm (23 1/4 x 16 9/16 x 10 7/8 in.)
Material
Accessoriesdetachable water spout
DescriptionA water pump made of brass and glass consisting of a glass cylinder with a piston controlled by a brass handle that is connected to a tube going straight down from its bottom, and another near its top connected to a spigot letting the liquid into an inverted conical glass vessel.
There is a brass column that holds another conical vessel at a greater height, and there is a removable tube that can be connected to the top of the spigot and leads straight up before turning around to lead into the upper vessel. Whether the water is let into the higher or lower vessel is controlled by a stopcock on the spigot.
The pump rests on a wooden plank that is screwed to the sides of a wooden trough with metallic lining.
There is a brass column that holds another conical vessel at a greater height, and there is a removable tube that can be connected to the top of the spigot and leads straight up before turning around to lead into the upper vessel. Whether the water is let into the higher or lower vessel is controlled by a stopcock on the spigot.
The pump rests on a wooden plank that is screwed to the sides of a wooden trough with metallic lining.
Signedunsigned
Curatorial RemarksThe morer ecent pictures do not show the tube leading to the upper vessel. It is now missing.
FunctionThis is a device that demonstrates the different amounts of effort required to raise water to two different heights. The pump draws water from the trough underneath, and can raise it to one of the vessels depending on whether the valve by the spigot is open or closed, which could be changed during the operation of the pump.
ProvenanceDavid Wheatland purchased from Alain Brieux, Paris, May 15, 1964 (lot 16/17).
Charles-Louis Chevalier
Date: circa 1820
Accessories: (b) glass cup (stored separately on same shelf); (c) long, Y-shaped brass tube (tied to pump)
Object number: DW0822a-c
P. Grandee
Date: 1720-1750
Object number: 1998-1-1441
Sears, Roebuck & Company
Date: early 20th-mid 20th Century
Accessories: part of Demonstration Water Pump, SearsRoebuck and Co., 0332a
Object number: RS0332a
Distillation Products Industries
Date: circa 1940
Object number: 1998-1-0034
Joseph M. Wightman
Date: 1840-1850
Object number: 1996-1-0249
Percy Williams Bridgman
Date: 1924-1937
Accessories: 4 wrenches; 1 oil pan
Object number: 1997-1-1819b
