US2841296A - Apparatus for raising and launching boats - Google Patents

Description

July 1, 1958 2,841,296

QAPPARATUS FOR RAISING AND LAUNCHING BOATS Filed March 23, 1954 w. L. CROWE 2 Sheets-Sheet 1 mN RN: o, H .U I I M: J MW 4 m M 1 HMUNWH I IH I :HuHr m 0 M HHIHHHHI LI IH J W F m illl. Hfl HI -HH- PHNI :WI H WC 7 $I m I M. .n 1 mm i mm w. Rwy Ill ,YIII

July 1, 1958 w. L. CROWE APPARATUS FOR RAISING AND LAUNCHING BOATS V 2 Sheets-Sheet 2 Filed March 23, 1954 United States Patent Ofifice 2,841,296 Patented July 1, 1958 APPARATUS FOR RAISING AND LAUNCHING BOATS Walter L. Crowe, Spencer, Iowa Application March 23, 1954, Serial No. 418,097

4 Claims. (Cl. 214-1) This invention relates to improvements in apparatus for use on a pier or the like to raise a boat from the water and tilt the boat to drain water therefrom and to permit inspection of and repairs to the hull to be made if required.

The primary object of this invention is to provide a more efficient and practical device of this kind which is non-complex in construction, inexpensive to manufacture, and durable, and which has means enabling vertical adjustment of the height of the device relative to the pier or the like on which it is mounted.

Other and further objects of the invention will become apparent from a consideration of the following specification when read in conjunction with the appended drawings, in which:

Figure l is an outboard side elevation of a device in accordance with the present invention, showing in dotted lines a boat supported thereon in erect position;

Figure 2 is a left-hand end elevation of Figure 1;

Figure 3 is a horizontal section taken on the line 3-3 of Figure 1;

Figure 4 is an end elevation similar to Figure 2 but showing the device operated to a tilted position;

Figure 5 is an enlarged transverse vertical section taken through the lower part of the device;

Figure 6 is a fragmentary horizontal section taken on line 66 of Figure 5, looking in the direction of the arrows;

Figure 7 is an enlarged fragmentary exploded perspective view of the adjustable supporting means for the device;

Figure 8 is an enlarged fragmentary side elevation of a portion of the frame of the device;

Figure 9 is a transverse vertical cross-sectional view taken on the line 99 of Figure 8; and

Figure 10 is a fragmentary top plan view of the adjustable supporting means.

Referring now more specifically to the drawings, reference numeral 1 designates, in general, a boat raising and tilting device comprising a normally vertical generally rectangular open frame 2 which includes a pair of spaced parallel vertically extending channel side members 3 having inner and outer side flanges 7 and 8', respectively. A horizontal angle iron cross member 4 (see Figures 1 and 8) extends between and is secured as by weldings 5 to the side members 3 adjacent the upper ends thereof.

A horizontal tubular cross member 6 extends between and is secured to the lower ends of the side members 3, with the tube ends passing through the inner flanges 7' of the side members and abutting the outer flanges 8', as by weldings 7 and 8, respectively (see Figure 6).

A pair of upwardly converging angle iron braces 9, 19 have their lower ends Welded at 11 (see Figure 8) to the upper ends of the side members 3 and their upper ends welded together at 12 (see Figure l) and to a vertically elongated lever 13 intermediate the ends thereof.

The lever 13 extends at right angles to the angle cross member 4 and its lower end welded at 14 (Figure l) thereto. The upper end of the lever 13 is provided with a pivotally connected ring 15 to which one end of a line 16 is secured.

A pair of normally horizontal angle iron support arms 17, 18 have their inboard ends secured to the lower ends of the side members 3, as by weldings 19, and project laterally and outboardly therefrom at substantially right angles thereto. A horizontal longitudinal keel stop beam 20, preferably formed of wood, overlies and extends between the outboard ends of the support arms 17, 18 and is fixed suitably thereto.

Vertically adjustable mounting means is provided for the frame 2 and comprises a plurality of vertically spaced inboardly declining notches 21 formed and opening through the inboard edges of the flanges of the side members 3 for selective engagement with a pair of trunnions 22, 23 (see Figures 1 and 7) between heads 24 welded at 25 on the laterally inward ends of and the vertical flanges 26' of angle iron mounting arms 26 Whose horizontal flanges 27 bear upon the top 36 of a pier or the like 30 and are pivotally secured by pivot pins 28, 29 thereto so as to project outboardly beyond the outboard end of the pier 30.

A hook 31 is pivotally connected to an eye-bolt 32 fastened to the top 30' of the pier 30 in such a position as to be engageable around the lever 13 when the lever is in the tilted position shown in Figure 4.

In use, with a boat 33 resting upon the support arms 17 and 18 with its keel 34 against the inboard side of the keel stop 2t} and the inboard side of the boat bearing against the frame 2, the device can be operated to raise and tilt the boat 33 by pulling in an inboard direction on the cable 16, which is preferably trained under a pulley 35 secured to the top 3t? of the pier 31) at some distance inboardly from the hook 311, until the lever 13 is in a horizontal position, as shown in Figure 4, overlying the pier 36 and with the frame 2 in a vertical position. In this tilted position of the device the boat 33 is tilted toward the pier 30 to drain water therefrom and to permit inspection and repair of the boat.

The frame 2 is initially adjusted for height relative to the pier 30 and the depth of the bottom 36 of the boat 33 afloat in the water 37 below the top 3b of the pier 39 by engaging suitable ones of the notches 21 with the mounting arm trunnions 22, 23 after first disengaging the trunnions, if necessary, from others of the notches, to place the support arms 17, 18 under the bottom 36 of the boat 33, whereupon the boat is maneuvered into the position on the device described above.

Having described and illustrated one embodiment of this invention in detail, it will be understood that the same is offered by way of example and that the invention is to be limited only by the scope of the appended claims.

What is claimed is:

1. In combination, a pier having a top surface and an outboard end, a pair of laterally spaced horizontal mounting arms resting upon said top surface, said mounting arms having inboard ends pivotally secured to the pier to swing on vertical axes crosswise of the top surface of the pier and free outboard ends normally projecting outboardly beyond the outboard end of the pier, horizontal trunnions on and projecting laterally inwardly from the outboard ends of the mounting arms, and a normally vertical boat supporting frame normally positioned outboardly from the outboard end of the pier, said frame having vertical side members having inboard sides, and vertically spaced inboardly declining notches in said side members opening through the inboard sides thereof, said trunnions being laterally engaged in selected notches.

2. In combination, a pier having a top surface and an outboard end, a pair of laterally spaced horizontal mounting arms resting upon said top surface, said mounting arms having inboard ends pivotally secured to-the pier to swing on vertical axes crosswise of the top surface of the pier and free outboard ends normally projecting outboardly beyond the outboard end of the pier, horizontal trunnionslon and projecting laterally inwardly from the outboard ends of the mounting arms, and a normally" vertical boat supporting frame normally positioned outboardly from the outboard end of the pier,'s'aid- 'frame having vertical side members having inboard sides, and vertically spaced inboardly declining notches in said side members opening through the inboard sides thereof, said trunnions being laterally engaged in selected notches, an upstanding vertical 'member on and rising from said frame, and an operating cable trained along the" pier and having an outboard end secured to an upper portion of said upstanding member and adapted to be pulled in an inboard direction to tilt the frame toward the pier.

3. In combination, a pier having a top surface and an outboard end, a pair of laterally spaced horizontal mounting arms resting upon said top surface, said mounting arms having inboard ends pivotally secured to the pier to swing on vertical axes crosswise of the top surface of the pier and free outboard ends normally projecting out boardly'beyond the outboard end of the pier, horizontal trunnions on'and projecting laterally inwardly from the outboard ends of the mounting arms, and a normally vertical boat supporting frame normally positioned outboardly from the outboard end of the pier, said frame having vertical side members having inboard sides, and vertically spaced inboardly declining notches in said side members opening through the inboard sides thereof, said trunnions being laterally engaged in selected notches, said frame further comprising outboardly projecting boat supporting arms on said side members and having outboard ends, and a horizontal boat keel stop beam extending between and secured on the outboard ends of the supporting arms. 7

4. In combination, a pier having a top surface and an outboard end, a pair of laterally spaced horizontal mounting arms resting upon said top surface, said mounting arms having inboard ends pivotally secured to the pier to swing on vertical axes crosswise of the top surface of the pier and free outboard ends normally projecting outboardly beyond the outboard endof the pier, horizontal trunuions on and projecting'laterally inwardly from the outboard ends of the mounting arms, and a normally vertical boat supporting frame normally positioned outboardly from the outboard end of the pier, said frame having vertical side members having inboard sides, and vertically spaced inboardly declining notches in said side members opening through the inboard sides thereof, said trunnions being laterally engaged in selected notches, an.

upstanding vertical tmember on and rising from" said frame, and an operating cable trained along the pier and having an outboard end secured to an upper portion of said upstanding member and adaptedto be pulled in an inboard direction to tilt the frame toward the. pier,

and a pulley secured to the top surface of the pier under which said cable is trained.

References Cited in the file of this patent UNITED STATES PATENTS V I Webster Mar. 8, 1898

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