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Expired
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Christopher Joseph Haeberli
Herbert Eugene Oscar Schmidt
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Individual
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Individual
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Publication of GB190703837ApublicationCriticalpatent/GB190703837A/en
3837. Haeberli, C. J., and Schmidt, H. E. 0. Feb. 15. Braces for drilling close up to obstructions. have a detachable angular supporting - frame 16, Fig. 1, with one end formed with a pin 19, Fig. 3, and a flanged sleeve 17 f or securing within a split socket 12, and the other end notched to be retained by a spring 10 in a lug 9. The bit chuck 1 is journaled in a sleeve 2 and is driven through a universal joint 4. To convert to an ordinary brace, the nut 21 is unscrewed, the socket 12 opened, and the attachment removed ; the crank-part 6 is swung into the socket which is then closed and secured by the screw 24.
GB190703837D1907-02-151907-02-15Improvements relating to Angular Bit Braces and Attachments therefor.
ExpiredGB190703837A
(en)