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
GB2982961A
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
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Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Publication of GB1001796ApublicationCriticalpatent/GB1001796A/en
B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
Landscapes
Engineering & Computer Science
(AREA)
Mining & Mineral Resources
(AREA)
Mechanical Engineering
(AREA)
Earth Drilling
(AREA)
Abstract
1,001,796. Percussive drills. T. DEMETRIADES. Aug. 18, 1961 [Aug. 18, 1960], No. 29829/61. Heading B4C. A feed device comprises a lever 1 on which the operator may stand, and having one end 6 resting on the ground and the other end linked to a drill 14. The lever is a platform connected by a spring 8 and drain 9 to the handle 15 of the drill.
GB2982961A1960-08-181961-08-18Feeding device for rock-drilling machines
ExpiredGB1001796A
(en)
Device automatically communicating to the tool holder bars of the drilling rigs, instantaneous retraction as soon as the thrust force exceeds a predetermined value