Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB442044A
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Individual
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Individual
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Priority to GB442044ApriorityCriticalpatent/GB575236A/en
Publication of GB575236ApublicationCriticalpatent/GB575236A/en
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
B21K1/00—Making machine elements
B21K1/20—Making machine elements valve parts
B21K1/22—Making machine elements valve parts poppet valves, e.g. for internal-combustion engines
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Engineering & Computer Science
(AREA)
Chemical & Material Sciences
(AREA)
Combustion & Propulsion
(AREA)
Mechanical Engineering
(AREA)
Forging
(AREA)
Abstract
575,236. Heating by electricity. ARON, H. March 9, 1944, Nos. 4420 and 6674. [Class 39 (iii)] [Also in Group XXII] In making a valve its enlarged end is heated by passing an electric current through it and reduced by forging. The valve during heating is held by a vice 21 which forms one electrode, and is pressed against an anvil 27. which forms the other, by a hydraulically operated plunger 29.
GB442044A1944-03-091944-03-09Improvements in or relating to the manufacture of valve forgings
ExpiredGB575236A
(en)
Compressed gas switch with a movable contact in the switching chamber, which is also intended for the power interruption and the subsequent voltage disconnection.