US2129006A - Front facing oarlock - Google Patents

Description

Sept. 6, 1938. A KAHN 2,129,006

FRONT FAG ING OARLOCK Filed Aug. 31, 1936 [145597- Glen/m Patented Sept. 6,1938 7 UNITED STATES PATENT orricE FRONT FACING OARLOCK Albert C. Kahn, Tomahawk, Wis.

Application August 31, 1936, Serial No. 98,655

3 Claims. (01. 925) This invention relates to a front facing oar portions othereof and through an arcuate slot I8 lock and concerns itself with a simple and novel in the fulcrum plate 3. The arcuate slot I8 is manner of mounting a jointed oar so that its opstruck from the pivot 9 as a center. A bearing eration will propel the boat in the same direction sleeve I 9 preferably surrounds the bolt II and ex- 5 as the operator is facing. tends into the slot. The head Illa of the bolt The invention comprises the novel structure and overlaps the edges of the slot 58 whereby the shoes combination of parts hereinafter described and I8 and Ilia are pivotally anchored to the fulcrum more particularly pointed out and defined in the plate 3. The shoes III and Illa are rigidly seappended claims. cured to the oar sections by the aforementioned In the accompanying drawing which illusbolts 9' and I l and also by transverse bolts 28 10 trates a preferred form of this invention and in which extend through the side flanges. which similar reference numerals refer to similar During the operation of the oar, it will be obfeatures in the different views: served from Figure 1, that the blade portion I3 Figure 1 is a top plan view of an car look inmoves in the same general direction as the handle 5 volving this invention and showing in dotted lines portion 8, the handle portion 8 pivoting on the bolt 35 the operation of the oar. 9 and the blade portion I3 pivoting on the bolt Figure 2 is an enlarged fragmentary sectional I4, Wh moves inwardly in the 11 95 a5 he view taken in a longitudinal direction through bolt I? that connects the overlapping portions of the oar and lock. the shoes travels inthe arcuate slot I8. Thus Figure 3 is an enlarged sectional view taken the oar acts as a compound lever; the handle por- 20 substantially upon the line IIIIII of Figure 1 tion being piv Connected I10 the d Of the looking in the direction of the arrows. blade portion I3. The arcuate slot I8 is struck Figure 4 is an enlarged top plan view of the from the pivot bolt 9 as a center, the slot I5 alfulcrum plate. lowing for the necessary inward movement of the 5 In the drawing which illustrates one form of blade portion I3. the invention, there is shown a side wall I of a From the foregoing, it will be appreciated that rowboat having ears 2 projecting above the top a very simple mounting for a jointed oar has been and to which there is pivoted a fulcrum plate 3. provided that allows the oar to be mounted in the It will be noted that the fulcrum plate has curved factory upon the fulcrum plate which only needs 0 downwardly directed flanges 4 which are pivoted be attached to the boat. Moreover the mountto the ears 2 by a bolt 5. Theears 2 which ing is conducive to easy operation and reduces may be formed integral with a metal plate 6 are the rowing effort. held in spaced relation by a sleeve 1 on the bolt I am aw r hat many changes may be m de 5. It will benoted that the fulcrum plate 3 can and numerous details of construction may be properly tilt on the bolt 5 as an axis for lowering varied through a wide range without departing 35 and raising the car. from the principles of this invention, and I there- The handle portion 8 of the car is pivoted to the fore do not purpose limiting the patent granted fulcrum plate 3 by means of a bolt 9. A shoe hereon otherwise than necessitated by the prior I0 is attached to the outer end of the handle art.

portion 8 of the oar. This shoe I0 comprises a I claim as my'invention: 40 bottom portion I I and side flanges I2 in which the 1. In a device of the class described, a fulcrum outer end of the oar portion 8 snugly fits. The plate, an oar section pivoted to said plate, a bottom II of the shoe I8 extends beyond the side second oar section, said fulcrum plate having a flanges as indicated at Ma. straight slot, a pivot bolt extending through said The blade portion I3 of the oar is slidably pivsecond oar section and through said slot and oted to the fulcrum plate 3 in spaced relation to slidably pivoting said second section to said plate the section 8 by means of a bolt I4 which extends in spaced relation to the first section, shoes upon through a slot I5 in the fulcrum plate. The inthe adjacent ends of said sections, said shoes havner end of the blade portion or section I3 of the ing parts in overlapping relation, said plate havoar is also mounted in a shoe Illa very similar ing an arcuate slot and a pivot bolt extending 5 to the shoe I0 on the handle section. through said overlapping portions and through It will be noted that the bottom of the shoe Illa said arcuate slot and causing said pivot bolt to also extends beyond the side flanges as indicated travel in an arcuate path. at I8. The shoe extensions Ma and I6 overlap 2. In a device of the class described, a fulcrum and a bolt Il extends through the overlapping plate having a flat body portion and downwardly 55 tion, a handle section, a pivot connecting said handle section and body portion, said plate having a transverse arcuate slot struck from said pivot as a center and a longitudinally extending straight slot, an oar section having a pivot bolt extending through said straight slot, the adjacent ends of said sections having overlapping parts and a pivot bolt extending through said overlapp-ing parts and said arcuate slot.

ALBERT C. KAI-IN.

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