US2842274A

US2842274A - Motor hoist

Info

Publication number: US2842274A
Application number: US689977A
Authority: US
Inventors: Ernest T Sherman
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-10-14
Filing date: 1957-10-14
Publication date: 1958-07-08
Anticipated expiration: 1975-07-08

Description

July 8, 1958 E. T. SHERMAN MOTOR HOIST Filed Oct. 14, 1957 v FIG-l FIG-3 ATTORNEYS Unit d Sta e Patent v MOTOR HOIST Ernest T. Sherman, Dayton, Ohio Application October 14, 1957, Serial No- 689,977 4 Claims. 01. 214-374) This invention relates to a motor hoist and transporting device, and particularly to such hoists and devices adapted for use with outboard motors and the like.

Outboard motors, as is known, are'mounted at the rear of boats on the outside thereof and are generally supported on the boat by clamps that engage over the top'edge of the boat so that the motor can be firmly clamped to the back of the boat.

Small motors of this type, up to, say, 7 /2 horsepower or so, do not present any particular problems in connection with removing the motor from the boat or installing it thereon because such motors-are not particularly heavy. However, motors 'of this nature are becoming larger, and it is not uncommon at the present time to find outboard motorswith horsepowers running from 2-5 up to 50. Outboard motors of this size are not only dimensionally rather large but are also quite heavy, being from 150 to 250 pounds in weight. These motors are too large and heavy to be removed safely by hand.

With this in mind, it is a particular object of the present invention to provide a device particularly adapted for'permitting the easy removal and installation of outboard motors of large sizes thereby eliminating the heavy labor as well as the risk involved in handling such motors.

A particular object of this invention is the provision of a motor hoist and transporting device which will permit the removal and installation of even heavy motors, particularly outboard motors, by a single person.

A still further object of this invention is the provision of a motor hoist and transporting device which is light and which is simple in construction, thereby permitting manufacture at low cost.

It is also an object of this invention to provide a motor hoist and transporting device which is adapted for use with various types of motors, thereby having substantially universal application.

' Another object of this invention is the provision of a motor supporting device, particularly for outboard motors, in which the motor can readily belowered into a test tank to be run under load.

These and other objects and advantages of this invention will become more apparent uponreference to the following specification taken in connection. with the accompanying drawings, wherein: Y

Figure 1 is a perspective view showing a motor hoist and transporting device according to a preferred embodiment of my invention,

Figure 2 is a view looking in at the rear cally' movable panel of the device,

' Figure 3 is a sectional view indicated by line3-3 on Figure 2 showing a ratchet mechanism associated with a clamping strap forming a part of the device,

"Figure 4 is a perspective view of the portion of the device inside the dot dash circle marked 4 in Figure 1, -Figure 5' is a fragmentary perspective view showing of the vertiwiththe 'vertically movable panel,

the support for the lower end of the lift screw associated r 2,842,274 Patented July 8, 1958 Figure 6 is a plan sectional view indicated by line 66 on Figure 2' showing the strap forming a part of the device which can be used for clamping motors to the panel, and

Figure 7 is a sectional view indicated by line 77 on Figure 2 showing the drive arrangement for the elevating screw for the vertically slidable panel. Referring to the drawings somewhat more in detail, the device, as will be seen in Figure 1, comprises a tubular frame 10 which may be made up of, say, 1%? or 1 /1" conduit and with the top part of the frame bent back as at 12 to form a handle and with the bottom part of the frame bent forwardly as at 14 to provide a supporting base.

Extending transversely of the frame near the bottom thereof is an axle 16 having supporting wheels 18 rotatably mounted on the opposite ends thereof. The wheels 18 are located so that the center of gravity of the unloaded device is forwardly thereof so that the device will stand in an upright position even without a motor mounted thereon.

Extending transversely between the'vertical side members of frame 10 is a panel 20 which may be formed of wood, say, 1%" plywood, and which is about 20" square. Panel 29 has attached thereto toward the bottom in front a pair of blocks 22 that carry rollers 24 that engage the side rails of the frame. Support straps 26 may be provided that engage the outer ends of the axles on which rollers 24 are mounted, and which straps extend around the back of the panel to be retained in position by the same bolts 28 that mount the blocks 22 on the panel.

Similar roller and supporting strap structures are located at 30 toward the upper edge of the panel 20 except that the rollers in the case of the devices 30 engage the backs of the side rails of the frame.

The panel 20 is vertically movable in the frame by means of a vertically extending lift screw 32 located behind the panel and having its lower end received in a socket member 34 attached to axle 16. A pin 36 retains the screw in place in the socket and prevents rotation of the screw.

On the back of the panel 20 is mounted a metal box 38 that may be made up of two pieces of angle iron welded together, for example, and through which box the screw 32 extends. Within the boxthere is threaded to the screw a first bevel gear 40 and meshing therewith is a second bevel gear 42 that is mounted on a crank element 44 that has a handle on the outside of box 38. A thrust bearing 46 is positioned adjacent bevel gear 40 so that this gear is relatively free running. It will be evident that operation of crank element 44 will cause either upward or downward movement of panel 20 in frame 10 and that this can be readily accomplished even tion for engaging substantially any .type of outboard motor. With motors having no bars of this nature, there.

are generally other projections which can be engaged by hooks or the like carried on the panel so that the motor can be supported thereon.

In general, such motors have a lower portion 56 ad-;

jacent the propeller 58, and this lower portion 56-rests against a cushion 60 on the face of the panel towardthe bottom, and there may be provided a-notch 62 alongzthe' bottom edge for engaging a portion of the structure of the motor whereby the motor is prevented from tilting on the panel.

For motors that might be lacking in any sort of loops or bars that could. be engaged by hooks of the nature referred to, there is practically always on overhanging portion on the motor that can be engaged by. the top edge of the panel so that the motor can be lifted by moving the panel upwardly. For motors of this nature, means are provided for clamping the motors to the panel in the front of a length of strong strap, which may advantageously be heavy webbing or the like, and which strap is indicated at '70 in Figures 1, 2 and 6. Stray 70 has one end attached to a shaft 72 behind the panel that is rotatable in the

angle brakes

74 and 76, also mounted on the panel. The webbing extends from the shaft through one of a pair of spaced apertures 78 provided in the panel and returns through the other thereof, after being passed around the motor, and the strap can then be tightened by placing the free end between the shaft and the portion of the strap leading therefrom and then winding both ends of the strap about the shaft, as illustrated in Figure 6.

The turning of shaft 72 may be accomplished by the use of a ratchet wrench 80 which can be permanently attached to the shaft, if so desired. When the shaft is rotated to tighten the strap up, a ratchet mechanism 82, as illustrated in Figure 3, is provided for holding the shaft in its adjusted position. This rachet mechanism can readily be released so that the strap can be removed from about the motor which it supports.

In employing the hoisting device with the motor illustrated in Figure 1, the device would be positioned so that the hooks 54 engage the eyes or straps or bars 52 of the motor and thereupon the clamps 84 connecting the motor with the boat would be released and then crank 44 would be operated to raise the panel and the motor attached thereto vertically, thus disengaging the motor from the boat, and whereupon the hoisting mechanism could readily be tilted on its wheels 18 and the motor transported wherever desired.

The motor, when supported as illustrated in Figure l, is in position where most parts of the motor are accessible for being worked on, but should it be desired to obtain access to the side of the motor adjacent the panel, or to place the motor in a test tank to be run under load, a second hoisting device could be employed by bringing the panel of the second hoisting device beneath the clamps 84 and then raising the second panel upwardly so that the motor could be clamped thereto. The motor could then be lifted off the first hoisting device and this would expose the opposite side of the motor and also would permit the motor to be raised on the second hoisting device and carried over the edge of a test tank and then lowered therein so that the motor could be operated under load.

In utilizing two hoisting devices in the manner described, it might be preferable for the base portion of the second hoisting device to have the forward transversely extending portion, indicated at 90 in Figure 1, cut away so that the base portions of the two hoisting devices could be moved into overlapping relation, thereby permitting the panels of the two devices both to engage the motor at one time.

By the present invention even the very heaviest of outboard motors can easily be handled by a single individual and all necessary work such as removing boats and installing on boats, overhauling, and testing can be done without requiring any additional help.

While normally the pipe or conduit forming the frame 10 is sufficiently strong to support any loads imposed thereon, it may be preferred to provide braces 92 in the corner between the vertical side parts and the base part thereof and which may take the form of either brace rods or gusset plates whereby the frame can. be madestrong 4 t enough to support even the heaviest of outboard motors, or similarloads.

It will be understood that this invention is susceptible to modification in order to adapt it to different usages and conditions; and, accordingly, it is desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.

I claim:

1. In a hoisting and transporting device; a tubular frame comprising a length of pipe or conduit having its ends brought together and formed so as to provide for laterally spaced vertically extending side rails, a U-shaped base extending forwardly from the bottom of the side rails, and a U-shaped handle extending rearwardly from the tops of the side rails, a panel extending transversely between the side rails, roller means toward the lower and upper edges of the panel engaging the front and back sides of the side rails, an axle attached to the side rails on the back sides thereof and toward the bottom, wheels on the endsof the axle, said wheels being so positioned that the device will set upright thereon, a screw having its lower end supported on the axle and extending upwardly behind the panel, a frame connected with the panel through which the screw extends, gear means in the frame threaded to the screw, means carried by the said frame for rotating the gear means whereby the panel can be moved vertically between the said side rails, and means carried by the panel for supporting engagement with an outboard motor, said means comprising hooks attached to the panel and adapted for engaging the towing line loops provided on the motor.

2. In a hoisting and transporting device; a tubular frame comprising a length of pipe or conduit having its ends brought together and formed so as to provide for laterally spaced vertically extending side rails, a U-shaped base extending forwardly from the bottom of the side rails, and a U-shaped handle extending rearwardly from the tops of the side rails, a panel extending transversely between the side rails, roller means toward the lower and upper edges of the panel engaging the front and back sides of the side rails, an axle attached to the side rails on the back sides thereof and toward the bottom, wheels on the ends of the axle, said wheels being so positioned that the device will set upright thereon, a screw having its lower end supported on the axle and extending upwardly behind the panel, a frame connected with the panel through which the screw extends, gear means in the frame threaded to the screw, means carried by the said frame for rotating the gear means whereby the panel can be moved vertically between the said side rails, and means carried by the panel for supporting engagement with an outboard motor, said means comprising hooks attached to the panel and adapted for engaging the towing line loops provided on the motor, there being notch means in the bottom edge of said panel for engaging a portion of the motor to prevent tilting thereof on-the panel.

3. In a hoisting and transporting device; a tubular frame comprising a length of pipe 01' conduit having its ends brought together and formed so as to provide for laterally spaced vertically extending side rails, a U-shaped base extending forwardly from the bottom of the side rails, and a U-shaped handle extending rearwardly from the tops of the side rails, a panel extending transversely between the side rails, roller means toward the lower and upper edges of the panel engaging the front and back sides of the side rails, an axle attached to the side rails on the back sides thereof and toward the bottom, wheels on the ends of the axle, said wheels being so positioned that the device will set upright thereon, a screw having its lower end supported on the axle and extending upwardly behind the panel, a frame connected with the panel through which the screw extends, gear means in the frame threaded to thescrew, means carried by the said frame for rotating the gear means whereby the panel can be moved vertically between the said side rails, and means carried by the panel for supporting engagement with an outboard motor, said means comprising a shaft rotatably mounted on a vertical axis on the back of said panel, a length of webbing or strap having one end attached to said shaft, and spaced apertures in the panel through which the webbing or strap can be passed to embrace a motor, said shaft being provided with a rachet whereby the strap or webbing can be drawn up tight around a motor to support the same on the panel.

4. In a hoisting and transporting device; a frame comprising laterally spaced vertically extending side rails, base means rigid with and extending forwardly from the bottom ends of the side rails, handle means extending rearwardly from the tops of the side rails, a panel extending transversely between the side rails, roller means toward the lower and upper edges of the panel engaging the front and back sides of the side rails, an axle attached to the side rails on the back sides thereof and toward the bottom, said handle means and axle means holding the side rails in fixed spaced relation, wheels on the ends of the axle, said wheels being so positioned that the device will set upright thereon, a screw having its lower end sup- References Cited in the file of this patent UNITED STATES PATENTS 1,790,711 Johnston Feb. 3, 1931 2,484,227 Houket a1. Oct. 11, 1949 2,514,825 Zenko July 11, 1950 2,598,489 Bayer et a1 May 27, 1952 2,721,085 Powell Oct. 18, 1955 FOREIGN PATENTS 118,906 Australia Sept. 4, 1944