GB190413985A - Improvements in Screwdrivers - Google Patents

Improvements in Screwdrivers

Info

Publication number
GB190413985A
GB190413985A GB190413985DA GB190413985A GB 190413985 A GB190413985 A GB 190413985A GB 190413985D A GB190413985D A GB 190413985DA GB 190413985 A GB190413985 A GB 190413985A
Authority
GB
United Kingdom
Prior art keywords
spring
jaws
hold
screw
head
Prior art date
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
Henry Wadsworth Lane
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB190413985A publication Critical patent/GB190413985A/en
Expired legal-status Critical Current

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Abstract

13,985. Lane, H. W. June 20. Screwdrivers have spring lips which grip the undercut slot in the head of a screw and so hold it while being driven. A longitudinal slot 3 is cut in the edge of the blade, forming two spring lips 1, 2 which have slight beadings 4 on their outer edges as shown in Figs. 2 and 3. Thin pieces of spring steel 5, 6 may be used instead, having a distance-piece 7 between, or each having an outward set, and entering a large groove in the screwdriver. Thin pieces of steel may also be used as shown in Fig. 5, but, in all cases, the strips are secured by soldering or riveting. Figs. 6 and 6<a> show a modification in which a continuous bent spring is nsed. Figs. 7 and 8 show another form in which the jaws have teeth 11 which enter into the groove 10 in the head 9 of a screw and so hold it. These jaws may be elastic so as to separate naturally, or they may be rigid and operated in the manner employed in the universal watch key.
GB190413985D 1904-06-20 1904-06-20 Improvements in Screwdrivers Expired GB190413985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190413985T 1904-06-20

Publications (1)

Publication Number Publication Date
GB190413985A true GB190413985A (en) 1905-05-18

Family

ID=32626510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190413985D Expired GB190413985A (en) 1904-06-20 1904-06-20 Improvements in Screwdrivers

Country Status (1)

Country Link
GB (1) GB190413985A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532972A (en) * 1947-04-18 1950-12-05 Donald D Vertin Screw holder and starter
US2669896A (en) * 1951-01-19 1954-02-23 Robert S Clough Retractable jaw wrench having parallel resilient jaws

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532972A (en) * 1947-04-18 1950-12-05 Donald D Vertin Screw holder and starter
US2669896A (en) * 1951-01-19 1954-02-23 Robert S Clough Retractable jaw wrench having parallel resilient jaws

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