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Expired
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Frank Henry Shaw
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Individual
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Individual
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Publication of GB190620349ApublicationCriticalpatent/GB190620349A/en
20,349. Shaw, F. H. Sept. 13. Compasses, drawing.-Pencil compasses. and like instruments are provided with an interchangeable point-protector and clamping-screw, consisting of a screwed tube a which engages laterally with the barrel e on the short leg f. When the compass is out of use, the protector is passed over the point b and secured by the internal screw a', Fig. 4, which engages with the thread c<1>, or the interior of the protector is made in the form of a tapered socket to take over a corresponding tapered portion on the leg c.
GB190620349D1906-09-131906-09-13Improvements in or relating to, School and other Compasses and like Instruments
ExpiredGB190620349A
(en)