US1674307A - Oarlock - Google Patents

Description

June 19, 1928.

A. SMITH OARLOCK Filed Sept. 6, 1927 cient oar lock, which permanently retains Patented June 19, 1928.

TES

ANDREWSMITH, OF MILWAUKEE, WISCONSIN.

' r oAmiooK.

' Application filed September 6, 1927. Serial No. 2171706;

This invention pertains to improvements in oar locks, and has primarily for its object the provision of a simple,du'rable, and efiithe oar in operative position and allows the necessary movement of theoar' inthe lock for feathering purposes. r p

Incidental to the foregoing, a further object is to provide an oar lock of the fore from its socket except when the oar is positioned longitudinally withfrelation to the boat, thus preventing accidental dislodgment and loss ofthe oar,which frequently results where it is possible to remove the oar lock when the oar is in operative position at right angles to the boat. Y

Another object is to provide an anti-friction engaging ,means between the oar lock andoar sleeve, which means allows for easier operation of the oarjand replacement in the event of wear upon the same.

A still furtherobjectfresides fin the novel structure of the sleeve, whereinbothmembers are formed'by the same'die, andare arranged to interlock in assembly on. 'the oar, thus issuing a rigid assembly and evenly distributing all strain on the sleeve, which eliminates the possibility of the attaching screws working loose.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the novelconchanges in the precise embodiment of the struction, combination and arrangement of parts substantially as hereinafter described and more particularly defined by the ap pended claims, it being understood that such herein disclosed invention may be made as come within the scope of the claims.

In the accompanying drawings is villustrated one complete example of the physical embodiment of the present invention constructed according to the best mode so far devised for the practical application of the principles thereof.

Embodiments of the invention are shown in the accompanying drawing, in which:

Figure 1 is a side elevation of an oar equipped with the present invention, the socket being in section to more clearly illustrate the structural features. a

Figure 2 is a plan section through the oar lock. 1

Figure 3 is a transverse section through and in section, and

socket. v j Referring now to the accompanyingfdrawing the numeral '1 I designates 'a portion of aconventional oar towhich'the present in vention' is attached, the same comprising an oar lock 2 provided with the usual" shank going character in which means is provided l for preventing the removal of the oar lock ,iiiner periphery vThe lock'Q on its the oar, with parts of the lock bro'ken-a w ay vided. with a pair of opposed recesses 4, 1

which 'ecesses'freceive the ballsf5, adapted "to pro ect into a circumferentialgroove formed in thej oar sleeve 6.' The sleeve "6 is preferably formedfro'm stamping] and comprises two sections 7, which abut one another along a transverse center line, the sections being spherical n shape. The ci'rcumferential groove 8 is 'formed "at right angles to the longitudinal axis of the sleeve; The butting edges of the sleeve 7 are pro- "ides ivith to g 9 which projectzin the rece'sseslO formed on the' edge of"tliel'adjarv cent sleeve. Thus it will' beseenthat as -the sleeves are assembled upon the oar 1 the interlocking engagement of the sleeve sections provides a rigid assembly and any strain upon one of the members will b6 evenly distributed'to both sections, thus reducing the possibility of the attaching means, which in the present instance comprises screws, becoming loosened. In. order to prevent removal lock, except when the car is in longitudinal position with relation to the boat, the socket of the oar 11 which receives the shank 3-is provided with a closure 12 at its lower end, which closure has formed therein key-hole slots 13 for the reception of the reduced end 14 oi the shank 3, which end is provided with lat eral projections 15. The projections 15 normally engage the end closure 12 to prevent removal of the lock therefrom until'the same is swung to such position that the oar is in a longitudinal relation to the boat, in which position the projections 15 pass through the i i key-hole slot.

As best shown in Figure 3, the balls 5, which project into the circumferential groove 8 to hold the oar against longitudinal movement, are positioned below the lie i liqm thetfor gqing itwill be bvious nth transverse axis of. the oar sleeve? 6. Fhis arrangement 1s essential 1n order to permit assernbllng of the sleeve on the oar. The

foregoing is accomplished byl first attaching. I 5 one of the sections 7 of the sleeve to the top i a very mple, .Idnralole,- and efficient oar lock structure has 7 been, provided in g which; the ,oar is permanently held, in. the lock and at ftheisa elti a t iversalqm v mfi the jtherg becanse ofAthe engageinentqiof the v.is lproviidedto allow all of thezessential opernzitiqns, inclu'ding." feathering v oi the, pars. a It,jwill further, beh seen thatinafsmuch ast-he 'ton'gues ipon their corresponding edges 'and recesses forthe, reception of said;,t ong'ues on the r opposlteedgesg bothi'sleev'es; are ideneco t, of ma ac ure ;,t0,, a minimum. j Eurto ngues' 9 with'the recesses 10', the sections ofthei sleevelare. securely lockedtogether and (any strain exerted upon; one sectionv will be 7 distrihuted .to,. the adjacent section,v thus preeventing oo ening of he att ched s re and disalignment of the sleeves.

', readily 1 i:be replaced, .andgit i obvious, th t guestin strncture n andmmay, therefore be fnformedif em a ,sirig1 j. whi h red c t sh the balls. 5 ,1 which lock {the sleeve wiil ilhthe oarglock beeome orn they ,can

'upon the movable parts and materially facilitating-operationo'f -the oar.

I claim: v 1. The combination of an oar look, a-

, sphericalsleeve provided With a circumferential groove, spaced projections carried by saidroalf lock ,for engagement insaid groove,

ashank: for said ,oarlock; projections carriech npon- {the; end [of said 'shanln and'. a

' sock'et fonthe receptiOIl {of saidshank,said

socket being provided with, a, key-hole slot. (in f its lower .endto pelinilit the Withdrawal ofthe shank only When' the said shank'projections, are, aligned with said. slot.

Q'F'Ifhe combination of, an woar lock pro- .vided, with spaced recesses, a split spherical a, sleeve} pridvlided ith a circumferential groove'ihalls;positionedoin said recesses for jfileeves 7 E are provided "with vprojecting engagement in said groove,-the corresponding edges;,ofisaidsleevesections being provided with, tongues-and recesses for interlockingv ,',en'gagement ,When'thesleeves are assembled onia n oar, aQdepencl-mg'shank' for said oar lock, projections onithe lower end of said shank, said socket; being, Provided, with a key-hole L slotjin' its" lower end to permit iv'ithdrawal of'the oar lockonlywhenthe Qshank projections are aligned with said keyhole slot. I V v ln testimonyj that I gclaim the Eforegoing I, have hereunto: set ,my. hand at 'Milwa'ukee,

in Ethe countyv of ,Milwaukee ,ancl State of QWisconsiri.

.ANDREW SMITH.

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