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Expired
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GB2839219A
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Individual
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Individual
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Priority to GB2839219ApriorityCriticalpatent/GB158411A/en
Publication of GB158411ApublicationCriticalpatent/GB158411A/en
B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
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Engineering & Computer Science
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Mechanical Engineering
(AREA)
Manipulator
(AREA)
Abstract
158,411. Petrie, J. T., and John, E. B. Nov. 15, 1919. Riveting.-A device for holding-up rivets &c. has an electromagnet d in a groove in its base a for attachment to the work and a cylinder c for the holding-up plunger q. The device has a hand grip g, a switch f for the magnet, and a spring valve k to control the air or other fluid pressure.
GB2839219A1919-11-151919-11-15Improved means for holding-up rivets and the like
ExpiredGB158411A
(en)
Automatic controlling device for the means provided in the induction piping of heavy oil engines for producing and maintaining the vacuum required for operating auxiliary suction operated devices