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
GB2599222A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Priority to GB2599222ApriorityCriticalpatent/GB196539A/en
Publication of GB196539ApublicationCriticalpatent/GB196539A/en
B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
B25D9/14—Control devices for the reciprocating piston
B25D9/16—Valve arrangements therefor
B25D9/18—Valve arrangements therefor involving a piston-type slide valve
Landscapes
Physics & Mathematics
(AREA)
Fluid Mechanics
(AREA)
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Drilling And Exploitation, And Mining Machines And Methods
(AREA)
Earth Drilling
(AREA)
Abstract
196,539. Rayner, G. H. T., and Rayner, P. Sept. 26, 1922. Fluid - actuated gears.-A rock drill or other percussive tool has a two-collar, compression - thrown valve, which controls the main supply through ports m, n, and an auxiliary exhaust through ports j, k, h, which exhaust is also controlled by the main piston b. The mainpiston cushioning is determined by the position and size of the ports j, k.
GB2599222A1922-09-261922-09-26Improvements in valve apparatus for rock drills and the like fluid pressure operated tools
ExpiredGB196539A
(en)