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
GB2966924A
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 GB2966924ApriorityCriticalpatent/GB246276A/en
Publication of GB246276ApublicationCriticalpatent/GB246276A/en
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23B—TURNING; BORING
B23B51/00—Tools for drilling machines
B23B51/02—Twist drills
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Catching Or Destruction
(AREA)
Abstract
246,276. Ratinsky, S. Dec. 10, 1924. Hand drills. - The threads of the screw 1 of a hand drill are engaged by two or more balls within the driving nut 3. The balls are adjusted by screws 4 having lock-nuts 5.
GB2966924A1924-12-101924-12-10Improvements in a boring apparatus
ExpiredGB246276A
(en)