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poppet-head
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poppet-head
ˈpoppet-ˌhead Also rarely puppet-head. 1. In a lathe: = poppet n. 5, puppet n. 7.1665 R. Hooke in Phil. Trans. I. 61 There must be two Poppetheads, into which the Mandril must pass. 1725 W. Halfpenny Sound Building 56 Two level Pieces on each side the Puppet-Head. 1875 Knight Dict. Mech., Poppet-hea...
Oxford English Dictionary
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Junk head
A junk head is a form of piston engine cylinder head, where the head is formed by a dummy piston mounted inside the top of the cylinder. If the engine uses the common form of overhead poppet valves, these would also be difficult to fit inside the limited space.
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Poppet valve
head and into the combustion chamber. Many modern engines use an aluminium cylinder head.
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Frederick Ellsworth Sickels
The valve was usually the double-poppet.". In 1891, he became the head of the National Water Works in Kansas City.
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poppet
poppet, n. (ˈpɒpɪt) Forms: 4–6 popet, 5 poopet, 6 pop-, poppette, 6–8 poppit, 6– poppet. See also puppet. [ME. popet, -ette, agreeing in sense with F. poupette doll, known in 1583, in Cotgr. 1611 ‘a little babie, puppet, bable’; a dim. of a form *poupe, not found in this sense in French; but cf. It....
Oxford English Dictionary
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Valvetrain
Valves
Most modern engines use poppet valves, although sleeve valves, slide valves and rotary valves have also been used at times. Poppet valves are typically opened by the camshaft lobe or rocker arm, and closed by a coiled spring called a valve spring.
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Oturehua
These workings are notable as they still retain an intact poppet head, the only surviving one in the Otago goldfields. The Golden Progress poppet head was constructed of Australian hardwood and erected later than most, in 1928, which explains its survival.
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Knight engine
The cylinder head (known as the "junk head") is like a fixed, inverted piston with its own set of rings projecting down inside the inner sleeve. Daimler dropped poppet-valve engines altogether and kept their silent sleeve-valve engines until the mid-1930s.
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Valve guide
locate a poppet valve so that it may make proper contact with its valve seat. The clearance between the inner diameter of the valve guide and the outer diameter of the poppet valve stem is critical for the proper performance of an
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The Mystery of Tally-Ho Cottage
The manuscript included Blyton's handwritten statement that she typed her stories "straight out of my head" rather than penning them via hand. The Lorenzos eluded capture, but had to leave their poodle, Poppet, at Tally-Ho, though they had engaged an elderly couple, the Larkins, to take care of
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Sleeve valve
poppet valve engines. It not only eliminated the head rings, but also allowed a reduction in height of the engine and head, thus reducing frontal area in an aircraft engine,
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Rosalind Park
Poppet head lookout
The lookout, situated at the top of Camp Hill, was originally a poppet head from the Garden Gully United mine (one of Bendigo's richest At the foot of the poppet head lookout is the Bendigo Heritage Mosaic which was completed in 1987 and designed by mosaic artist Maery Gabriel.
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Sundown Tin and Copper Mine
The battery consisted of the 10 head stamper, 4 classifiers, 5 Wilfley tables, 2 Berdan pans and several buddles. Above the open cut is the main shaft, located on a bench cut into the hillside, with a mullock tip, tripod steel poppet head and older timber shaft- head
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Kitchener, New South Wales
The historic mine site has been preserved as a Heritage Park (including the poppet head structure).
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