US2892555A - Portable hoist for outboard motors - Google Patents

Description

June 30, 1959. R. M. HOOKER PORTABLE HOIST FOR OUTBOARD MOTbRS s Sheets-Sheet 1 Filed July 9, 1957 Roger. M. Hooker INVENTOR. E|: II

5 Attorneys June 30, 1959 R. M. HOOKER 2,892,555

PORTABLE HOIST FOR OUTBOARD MOTORS Filed July 9, 1957 5 Sheets-Sheet 2 Fig. 5

Roger M. Hooker INVENTOR.

R. M. HOOKER PORTABLE HOIST FOR OUTBOARD MOTORS June 30, 1959 5 Sheets-Sheet 5 Filed July 9, 1957 Raga; M. Hooker m m m United States Pa e 2,892,555 PORTABLE HOIST FOR OUTBOARD MOTORS Roger 'M. Hooker, Franklin, Tex. Application July 9, 1957, Serial No. 67 0,711 10 Claims. (Cl. 214 -75) hoist for outboard motors which may be readily adjusted both as to the height of the hoist and the extent of overhang of the lifting hook thereof from the hoist.

A further object of the invention is to provide a device in accordance with the foregoing objects which shall have together with extreme mobility of the device to facilitate its movement from place to place as required, an improved stability during the hoisting and during the transporting of outboard motors.

Yet another object is to provide a mobile hoist in accordance with the foregoing objects in which a simple, but effective provision is made to enable the operator to utilize his own weight in further increasing and augmenting the stability of the device, especially when the lifting arm of the device is supporting its load in cantilever fashion and outside of the wheelbase of the device. 6

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a perspective view showing a preferred embodiment of a mobile hoist incorporating therein the principle of this invention;

Figure 2 is a vertical, longitudinal, central sectional view taken substantially upon the plane indicated by the section line 2--2 of Figure 1, and showing in dotted lines the manner in which an outboard motor lifted by the hoist may be mounted upon an outboard motor support forming a part of the device;

Figure 3 is a vertical, transverse, sectional view taken substantially upon the plane indicated by the section line 33 of Figure 1 and showing a portion of the platform or base of the device;

Figure 4 is a vertical, transverse, sectional detailed view taken on enlarged scale substantially upon the plane indicated by the sectional line 44 of Figure 2 and showing certain details of the means for locking the hoisting horizontal arm in laterally adjusted position upon the support mast of the device;

Figure 5 is a horizontal, sectional view taken substantially upon the plane indicated by the section line 5-5 of Figure 2 and showing the laterally adjustable, horizontal supporting arm of the device and its mounting upon the support mast of the same;

Figure 6 is a fragmentary, detailed view showing the Windlass and a latch means of the same forming a part of the hoisting device;

Figure 7 is a top plan view of the device shown in the position of Figure 2, the ability of the hoisting arm to have a horizontal swinging movement being shown in dotted lines therein; and

Figure 8 is a'front elevational view of a modified construction of the apparatus.

Reference is made 'first to Figure 1 wherein the numeral 10 designates generally the mobile hoisting apparatus, which as shown consists of a horizontally extending supporting framework indicated at 12, together with a vertically extending framework section 14. Preferably these framework sections areeconomically constructed of tubular members, such as pipes or the like, being welded together to form a rigid and sturdy support means. Adjacent its upper end, the vertical section 14 of the supporting framework has a pair of laterally and rearwardly extending, U shaped brackets 16, which as shown best in Figure 2 have their inward ends provided 'with inturned flanges as at 18 for supporting a vertically disposed, horizontally extending plate or board 20 as by means of fastening screws or the like 22. As will be particularly observed from Figures 1 and 2, it is disposed above and inwardly of the forward edge of the horizontal section 12 of the supporting framework for a purpose to be subsequently apparent.

At its forward end, the device at the junction of the vertical and horizontal sections 12 and 14 of the supporting frame assembly joins with a laterally extending shaft 24 comprising an axle upon which a pair of supporting wheels 26 are journaled. At its rearward end and below the end of the horizontal section 12 of the supporting framework there are provided supporting brackvided'with a platform 30 which may conveniently overlie the rearward end of the supporting framework, being secured thereto as by fastening bolts 34. A second platform 32 is secured to the supporting framework intermediate the ends of the same, and as shown in Figure 2 together with Figure 7, adjacent and immediately rearwardly of the support member 20. This last mentioned platform is likewise secured to the framework as by fastening bolts 34 and has a portion which projects laterally to one side of the supporting framework.

Referring next to Figures 1 and 8, it will be seen that mounted upon the vertical section 14 of the supporting framework, immediately above and parallel to the axle 24, 'is a second axle orshaft 36. This second axle is adapted to receive larger supporting wheels, such as those indicated in dotted lines at 38 in Figure 8, and thus with these larger wheels constitutes a modified construction or arrangement. The larger wheels will not tilt the horizorital section 12 of the supporting frame from the horizontal position shown in Figure 1 to an inclined position since the larger wheels 38 supporting the forward or front end of the device are carried by the vertically displaced axle 36 of which by its position compensates for the increase in the size of the weels.

As will be observed from Figure 1, suitable brace rods '40 may be welded to the vertical and horizontal sections 14 and 12 of the framework in order to rigidify and reinforce'the same.

Referring now more particularly to Figure 2, it will be seen that the second laterally disposed axle 36 is displaced forwardly of the vertical section 14 with respect to the lower axle 24. Secured to the mid-portion of the axle 36 is a rigidly mounted, tubular shaft or sleeve principles of the invention.

3 42 which is provided adjacent its upper end with a diametrically disposed bore receiving therein a locking pin 44. A support mast assembly indicated generally by the numeral 50 is detachably and adjustably secured to the sleeve 42 of the device.

. The support mast assembly consists of a vertical shaft or column 52 which is slidably received in the sleeve 42 and which has a plurality of vertically spaced, diametrically disposed bores 54 therein for selectively receiving the locking pin 44. By this means, the shaft 52 may be secured in adjusted, vertical positions or may be vertically elongated as required.

The upper end of the shaft 52 has a horizontally disposed, hollow or tubular shaft 56 secured at the mid- .portion of the latter to the upper end of the vertical shaft.

The shaft 56 constitutes the support arm for the boom of the hoist. Suitable brace rods 58 serve to rigidly connect the opposite ends of the horizontal arm 56 to the vertical shaft 52 and thus provide a rigid support and construction of a boom assembly.

Slidably received within the support arm 56 is a rod 60 which has outer ends provided with a fork 62 having journaled therein a pulley 64. As shown more clearly in Figure 5, the support arm 60 is provided with a plurality of longitudinally spaced, diametrically disposed bores 66 and a locking means in the form of a bolt 68 extending through the arm 56 is adapted to selectively engage these bores and thus lock the telescoping members 56 and 60 in adjusted, laterally extended positions.

Secured to the upper surface of the support member 56 adjacent the opposite end thereof from that receiving the forked end of the rod 60 is a Windlass 70 of anv conventional design, the same including a hand crank 72, together with a drum or pulley 74 upon which a lifting cable 76 may be wound. A ratchet wheel 78 is secured to the Windlass and is operably engaged by a spring urged pawl 80, whereby the Windlass may be locked in selected positron.

As shown more clearly in Figure 4 the Windlass may be welded or otherwise secured to the top surface of the arm 56, as at 82.

From the foregoing, it is believed that the operation of the hoist will now be readily understood. By means of a hook or other fastening means 84 upon the cable 76, an object such as an outboard motor indicated in dotted lines at 86 in Figure 2, may be gripped or supported. By the use of the Windlass 70, the motor may be lifted and lowered and may be held at the desired elevated position by means of the ratchet and pawl construction 78 and 80 shown in Figure 6.

It will be understood that the vertical shaft 52 may be adjusted with respect to its supporting sleeve 42 by means of the locking pin 44 whereby to position the support arms 56, 69 at any desired elevated condition. At the same time, the telescoping arms may be laterally extended to give a sufficient lateral overhang for the pulley 64 and the hook 84. Since the locking pin 44 rests upon the top surface of the sleeve 42, it is obvious that the entire mast or boom assembly 50 may be swung horizontally in this sleeve, thus enabling the hook to reach to one side of or forwardly of the device where it may engage a motor 86 for lifting or lowering the same; and may then be swung horizontally to position the motor adjacent to the support member 20, whereupon the motor may be lowered and clamped thereon. During this lateral, horizontal swinging movement of the support arms, it is obvious that the weight of the operator upon either of the platforms 30 or 32 will greatly increase the stability of the device and prevent the same from possibly overturning under the weight of the motor 86 when the latter is swung outwardly from the device.

The foregoing is considered as illustrative only of the Further, since numerous modifications and changes will readily occur to those skilled in the art, it isnot desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A portable hoist for outboard motors comprising a mobile supporting framework having a substantially flat, horizontal platform and a vertical end wall at one end of said framework and platform, a first transversely extending axle secured to said platform at its junction with said end wall, a second transversely extending axle carried by said end wall outwardly of said platform and spaced from said first axle both vertically and horizontally and parallel thereto, wheels selectively journaled upon said axes, a support mast assembly including a laterally extending horizontal arm, mounting means securing said .mast assembly upon said end wall outwardly from said platform and at a midportion of said end Wall for swinging movement about a vertical axis, a Windlass, a cable and hook each mounted upon said horizontal arm, said horizontal arm being swingable about said vertical axis between a position overhanging the end of said platform and a position overlying the latter.

2. The combination of claim 1 including a plate-like support member, brackets mounting said support member upon said end wall in laterally spaced relation thereto and abovev said platform whereby to receive and support in clamping engagement thereon an outboard motor above said platform.

3. The combination of claim 1 wherein said mast mounting means comprises a vertically disposed sleeve secured to said end wall and rotatably and slidably re- 35 ceiving therein said support mast assembly.

its lower end resting upon and secured to said second 4. The combination of claim 3 wherein said sleeve has axle.

5. The combination of claim 1 wherein said horizontal arm includes a pair of telescoping, laterally extensible members, means for locking said telescoping members in extensibly adjusted positions, one of said members being rigidly secured to said mast assembly, the other of said members having a fork at its outer end with a pulley journaled in said fork and said cable being trained over said pulley.

6. The combination of claim 5 wherein said Windlass is mounted upon said one of said extensible members at the opposite end of said arm from said pulley.

7. The combination of claim 6'including braces rigidly connecting said one of said extensible members to opposite sides of said mast assembly.

8. The combination of claim 1 wherein said platform has a floor plate secured thereto and projecting beyond the end of said platform remote from said end wall.

9. The combination of claim 8 wherein said framework further includes support legs secured thereto and disposed beneath said floor plate.

10. The combination of claim 9 including a transverse floor member secured to said framework and projecting laterally to one side of said framework to provide a stand for supporting the weight of a person at one side of said framework.

References Cited in the file of this patent UNITED STATES PATENTS 717,471 Tanner Dec. 30, 1902 1,428,887 Hescock Sept. 12, 1922 1,614,697 Snook Jan. 18, 1927 1,795,812 Whiting Mar. 10, 1931 2,509,950 Zierke May 30, 1950 2,553,955 Berchtold May 22, 1951 2,575,564 Rinkel Nov. 20, 1951 2,668,625 Garland Feb. 9, 1954 2,723,130 Andrews Nov. 8, 1955

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