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Publication numberUS810230 A
Publication typeGrant
Publication dateJan 16, 1906
Filing dateAug 18, 1905
Priority dateAug 18, 1905
Publication numberUS 810230 A, US 810230A, US-A-810230, US810230 A, US810230A
InventorsWilliam B Swan
Original AssigneeWilliam B Swan
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 810230 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Nc. 810,230. n l MTENTBD JAN. 16, 1906.

w, B. SWAN,


. WITN ESSES .@Q. @CM BY* l W A mnNEv Mey 3,

'bit in pinces that would be wholly out reach 'wit HiT-'"EENDEFL.

ne; cinese.

Specicationof Lettere Patent.

Patented Jan. 16, 19%6,

Amman nea iugm is, nos. sean n, 274.813,

10 (LM whom it rim/y concern:

Be it known that WiLLIAM SWAN, a citizen oi the United States, residing at Seymour, county oi New Haven, State of Gonnecticut, have invented a new and useful Bit- Extender, of which the loliowing is aspecilication.

This invention relates to the class oi bitextenders illustrated and described in my former Letters iatcnt, No. 759,042, dated A 1G04-, and has for its object to still further simplify and clieapen the construction' oi this class ci implements and to irnprove their operation in use.

The device is adapted to be carried in a teoi-ci'iest with bits and afbrace and providesv an intermediate inpienient-to which a bit may bo Aiched and which inay itself be vattnched to a brace or toanother extender and ordinary of h an ordinary brace. i thus at siight er: ense provide a convenient means for extending every bit in a set without to the test degree iinpairing their efficiency or t" cir convenience in ordinary use,

iore, enabie the operator to ob- 'lts that can be obtained by a set oi ci long bits, while avoiding the serions iciise of a set ot long bits and the inconvenience of carrying them about.

ln order tc accomplish the desired result in the simplest and niostinexpensive manner possible and at the saine time to provide a thoroughiy qnact-icai and durable implement which is whdlty free from complications and willL not it out oi repair, i have devised the novel s wili enable the operator to use tain all scription, in connection with the accompanying drawings, is a specification, reference characters being used to indicate the several Darts. t

Figure 1 is en elevation illustrating my novei extender as in use, the sleeve being 1nV section; il t2, e similar view, the implement having been given a quarter-turn, both sieeve and chuck being in section and the uniooiring position oi the sleeve being indicated by dotted lines; Fig. 3, a side view, and Fig. a rear view,o the locking-catch detache and Fim 5 is a plan view, andliig. 6 an end view, or the chuck.

1i) denotes the shank oi' the ender, which is provided with the usual tang 1i by v. ich it may connected to a brace. At the other end ci the is a chuck i2,

lsleeve referablycorresnonds.

cture, oi' which the following de-l of the sleeve will enga spring,

ronghened, as at l5, for convenience 1n ma- 6o nipulation. The outer end or head of the cbiick is shown as taper-in outward, forming an incline 16, with which t .e lower end of the 17l enotes the shank of the provided with a tang 18, by which it may be connected either to a brace or to an extender. Tan 18 is provided with a locking-recess 19, whicn is adapted to be engaged by a lockingcatch 20, .the rear face oi with an outward incline 2 1, which corresponds with incline 16 on the head of the chuck. The

eneral shape of the locking-catch is that of a eli-crank lever. i

22 denotes the shank of the .kicking-catch, 7 5

end 23 an arm extending at'substantially a right anode to the shank. At the intersection of the shank and the ar'rn are trunnions 2&1.- fit the outer end oi the chuck is an inwardly-tap ed to receive the tang of a bit and which is cut away at one side to form a recess 26,' which receives the locking-catch. At the base of the recess are bearings 27, which receive the trunnions, and at the base of socket 85 25 is a socket 28, which receives a spring 29,' the outer end of which bears'against arm 23 of' the locking-catch and normally acts to throw the-locking-catcli to the unlocking position. f

The'operation will be readily understood from Fig. 2. When the sleeve is turned back- Ward, as indicated by dotted lines, the spring will act to throw the iockin -catoh outward toward the position indicate by dotted lines 95 and will permit the insertion 'of the tang of a bit into'tlie socket or will release a bit-tang should the implement have been in use. To lock a bit-tang in place in the socket, the

sleeve is simply turned down on the chuck to roo the position shown in full lines in Figs. 1 and 2'. As the sleeve moves downward the end e incline 21 on the back of the locking-cate and will move said catch into engagement wlthlocking-recess 19 105 in the bit tang against the power of the as clearly shown in Fig. 2l

Having thus describedniycnvention, I claiin- .In a bit-extender, an externally-threaded 11o chuck provided-with a taperingsocket at its lower portion terminating 1n a .centrally-lobit, which is 65 which is provided 7o eringsocket 25, which is adapt- 8o cated lrecess extending longitudinally -into the body of the elmehsaidloody being formed with horizontal-reesses adjacent t0- ing-level' comprising a long arm provided with' a latch and a short aim extending transverse l of the axis ofthe chuck, said short arm being 1o. arrangedwhereoy it Wil-l be acted upon by ,sleeve Irl testimonywhereof "the said spring to' force the long arm'toen 1inloeked fposition, and an' internally-threaded o lockng-leverinalocked ostion. l A

i1 presence of two Witnesses. .fl

, Y v WILLIAM'B. SWAN Witnesses:



r. said chuck adapted to retain the affix my signature 15

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2743524 *Aug 8, 1955May 1, 1956Sundel DonigerTools
US2955831 *Jan 27, 1959Oct 11, 1960Lappin Milton LBur chuck
US2979352 *Oct 17, 1955Apr 11, 1961Anderson CoArm connector
US3073635 *Jul 17, 1959Jan 15, 1963Edward J SchaeferShaft coupling
US5035457 *Jul 30, 1990Jul 30, 1991Eastman Kodak CompanySimple tooling exchange
Cooperative ClassificationB23B31/02