Framed Print : Perreaux's patent pump valves in the International Exhibition, 1862. Creator: Unknown
Resolution may be poor at this size (102 DPI)
Framed Photos from Heritage Images
Perreaux's patent pump valves in the International Exhibition, 1862. Creator: Unknown
Perreaux's patent pump valves in the International Exhibition, 1862. This method of constructing pump-valves is extremely ingenious, simple, and efficient; it is copied from the valves contained in the human heart. Perreaux valves are made of vulcanised indiarubber...[and] are of the form of a tube flattened at one extremity...The thickness of the sides of the upper part diminishes gradually to the top, where the two sides meet and form two lips, which when the valve is in a state of rest are in close contact, and prevent the downward passage of the fluid...owing to the...the elasticity of the material, they close perfectly and instantaneously the moment the pressure from below ceases...these valves...are extensively used in soap and alkali factories, and by paper-makers, tanners, bleachers, and dyers, in pumping paper-stuff, chemicals, tan-liquor, &c. Fig. 1 represents the section through the pump-barrel; fig. 2 the section of an ordinary bucket; and figs. 3 and 4 are sections of foot-valves. The pumps have glass cylinders or barrels, so that the action of the valves may be seen. It is found advantageous to use glass barrels, as they are free from corrosion and lubricate themselves with the material which is pumped through them'. From "Illustrated London News", 1862
Media ID 35124199
© The Print Collector/Heritage Images
1862 International Exhibition Cultural Event Diagram Exposition Great London Exposition Industrial Revolution International Exhibition Of 1862 Invention Patented Pump Rubber Trade Fair Valve Valves World Fair Worlds Fair
18"x14" Modern Frame
16x12 Print in an MDF Wooden Frame with 180 gsm Satin Finish Paper. Glazed using shatter proof thin plexiglass. Frame thickness is 1 inch and depth 0.75 inch. Fluted cardboard backing held with clips. Supplied ready to hang with sawtooth hanger and rubber bumpers. Spot clean with a damp cloth. Packaged foam wrapped in a card.
Contemporary Framed and Mounted Prints - Professionally Made and Ready to Hang
Estimated Image Size (if not cropped) is 35.6cm x 40.6cm (14" x 16")
Estimated Product Size is 35.6cm x 45.7cm (14" x 18")
These are individually made so all sizes are approximate
Artwork printed orientated as per the preview above, with portrait (vertical) orientation to match the source image.
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