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
Inventor
Albert George Ford
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
Application grantedgrantedCritical
Publication of GB190812348ApublicationCriticalpatent/GB190812348A/en
Respiratory Apparatuses And Protective Means
(AREA)
Abstract
12,348. Ford, A. G. June 6. Ventilating mines.-Relates to apparatus of the type in which pure air is supplied to the galleries and roads by main and branch pipes, the latter pipes being provided with mouthpieces from which air may be inhaled by the miners.. Vertical stand-pipes a situated in recesses in the galleries are provided with air from a compressor pump or fan through main pipes c. Branch pipes f terminate in mouthpieces g fitted with covers i, which are hinged or connected by chains k, to the branch pipe. The covers are kept in the closed position by spring fasteners l.
GB190812348D1908-06-061908-06-06Improvements in the Ventilation of Mines.
ExpiredGB190812348A
(en)