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
GB730027A
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to GB730027ApriorityCriticalpatent/GB281147A/en
Publication of GB281147ApublicationCriticalpatent/GB281147A/en
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23B—TURNING; BORING
B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
B23B45/04—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by fluid-pressure or pneumatic power
B23B45/046—Piston engines
Abstract
281,147. Holman, A. T., and Holman, P. M. Aug. 21, 1926. Drawings to Specification. Reversing-valves.-In a fluid pressure reciprocating engine, the reversing-valve is geared to the throttle valve so that rotation of the latter in one direction or the other first admits fluid and then sets the reversing-valve in the desired position. The machine is described in detail in Specification 281,000.
GB730027A1926-08-211926-08-21Improvements in or relating to pneumatic drills and like tools
ExpiredGB281147A
(en)
A device capable of furnishing the driving moment in engines working by gases, fluids or water pressure also applicable to machines for the suction and expulsion of gases and liquids