US1264848A - Oar-lock bushing. - Google Patents

Description

-.!. PALMER.

OAR LOCK BUSHING APPLICATION man Aue. 18. 1917.

` wvawo/L JERRY PALMER naman amarres isarisnar oisnrbnLD JERRY PALMER, 0F KORELOCK, MICHIGAN.

OAR-LOCK RUSHING.

renners. Y

To all whom t may concern.' 'Be it known that l, JERRY PALMER, a citizen vof the United States, residing at Korelock, in the county of Ontonagon and State of Michigan, have invented certain new and useful lmprovements in Dar-Lock Bushings, of which the following is a specication, reference being had to the accompanying drawings. K j

This invention relates to an improved oar lockbushing, andkhas for its primary object to provide a sectional bushing which `may be easily and quickly inserted within the lock and around the oar shaft so that when the oar is in operative position, allliabllity of the bushing sections being displaced or the possibility of the accidental displacement of the oar from the oar lock, is obviated. i l

lt is another and more yparticular object of the invention to provide a bushing for oar locks consisting of two semicylindrical sections which are insertible withinthe lock upon the relatively reduced portion of the oar shaft adjacent to the blade, the oar being subsequently moved longitudinally through the bushing sections to its operative position, urging the bushing sections apart, said sections being then rigidly fixed to the oar.

llt is a further general obj ect of the invention to provide a wear bushing for oars as above characterized, which is very simple in its construction, may be inexpensively manufactured, and is designed for use in connectioilu with the ordinary form of open oar loc With the above and other objects in view, my invention consists in the novel features of construction, combination, and arrangement of parts to be hereinafter more fully described, claimed, and illustrated in the accompanying drawing, in which,

Figure 1 is a perspective view illustrating the manner of arranging the bushing sections upon the oar within the oar lock- Fig. 2 is a transverse sectional view s owing the bushing sectionssecured to the oar in the operative position of the latter with respect to the oar lock; and

Fig. 3 is a section taken on the line 3-3 of Fig. 2.

Referring in detail to the drawings, 5 designates an oar lock of the ordinary open type generally used, having oppositely bowed arms spaced apart at their upper ends. With these arms, the central pin or shank Specification of Letters Patent.

` site ends with the `flanges 9.

ratentea npr.. so, rara Application led August 18, 1917. Serial No. 186,971.

6 is integrally formed for engagement in the socket onthe gunwale of the boat. f

The improved wear bushing constituting the subject-matter of the present application, includes two similar sections 7 preferably in the form of brass castings, each of which has a body portion 8 of semi-cylin` drical form and is provided u on its oppooutward y projecting -S designates the shaft of the oar and B the blade thereof, and adjacent to the inner end of the blade, the shaft S is of reduced diameter, as shown at S. lln assembling the bushing upon the oar and within the oar lock, one bushing section 7 is first arranged in the lower portion of the oar lock 5 with its concave side facing upwardly and the Hanges 9` disposed at opposite sides of the oar lock. rllhe oar shaft S is now arranged in the lock with the reduced parts Sfthereof seated upon the bushing section. rlhe other bushing section is now inserted through the open side of the oar lock, lt is to be noted that the body 8 of the bushing section is of a maximum diameter greater than the width" of the oar loclr opening and, therefore, it is" necessary to move the bushing section into and through this opening by a circumferential movement. rJFhediameter of the oar shaft portion S is such as to permit of this turning movement `of the bushing section through the open side of the oar lock until the longitudinal edges of said section are engaged upon the opposed edges of the other bushing section which was first arranged in the lock. The oar shaft is now forced longitudinally between the bushing sections so that the larger portion thereof will move between said sections and force the same in relatively opposite directions.v When the oar shaft has been properly located with its handle in the desired position with respect to the oar lock, the two bushing sections are securely fastened to the oar shaft by means of the screws indicated at 10. It is, of course, understood that the sectional bushing is loose within the oar lock to enable the same to oscillate freely in the operation of the oar.

From the foregoing description, taken in connection with the accompanying drawing, the construction, manner of operation, and several advantages of the invention will be the device, wear upon the oar shaft is obvikated, and when the oar is released, its retention in the oar lock is assured owing tothe fact that the bushing is of such diameter that it cannot move outwardly through the' open oar lock. Thus, possibilityof loss of the oar is ,obyiat'ed., The brass bushing also considerably strengthens the oar at .its oint of engagement in the lock" so' as to minimize liabilityof vbreakage of the oar. The oar lock remains' at all' tines in connection with 1 the bushing adis carried Witlji'the oar When the oars are removed or arranged in operai venient in practialuse. It is" also apparent ti've'; position upon the boat. The deyice,

While' 'relatively simple' in its construction, has' been found highly serviceable and con seyeral features of the device, it is .to bev understood .thatthe same are susceptible of yconsioleralile* modification and' I, therefore, reserveftli'e privilege of adopting all such legitiniat'erchangs as nfi'ay be fairly! em'- bdiedjiithin the= spirit and scope.y of the HYeht-e'asfcland- ,i t

lLI'a/vi'ng thus fully described' my' invention, what' l desire to claim' and secure by Letters Patent K y y y i y ,l l. ,Thev combination with an openyoarlock,

' Vof a mtal bushing'cnsisting of ytvifo similar sections each of semi-cylindrical forni and having a Width greater than the opening of the oar lock, said bushing sections being adapted for insertion into the oar lock by a circumferential movement and upon the relatively reduced portion of an oar shaft adjacent to the blade, and the oar shaft being subsequently moyed longitudinally between the bushing sections to a predetermined position with respect to the oar lock, and means for rigidly securing the bushing sections to the oar shaft. n

2. The combination with an open oar lock, of a bushing consisting of two siniilarcast metal sectionseach of semifcylindrical forni and having outwardly projecting flanges on its opposite ends, said bushing sections being of a Width greater than the' opening of the oar lock and adapted 4for insertion into thelock by circumferential movement through the open side thereof, said bushing sections being adapted for engagement upon the relatively reduced portion' of the oar shaft adj acent to the blade and said shaft then moved longitudinally between thebusliing' sections to a predetermined position with respect to the oar lock, and fastening screws to rigidly secure the bushing sections to the oar shaft.

In testimony whereof I hereuntoV aiiix my signature in the presence of two Witnesses.

. JERRY PALMER. Witnesses:

Jos. BRorHY,

MABEL C. SCOTT.

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