US 3584595 A
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Description (OCR text may contain errors)
United States Patent Inventors Bernard Joseph Perry, Jr.
1080 Montgomery St.. Manchester, NH. 03102; Richard Francis Wadleigh, Jr., P.0. Box 188, Winnesquam, N.H. 03289 App1.N0. 846,325 Filed July 31, 1969 Patented June 15, 1971 OUTBOARD MOTOR STEERING BRAKE Primary Examiner-Andrew H, Farrell Artorney-Frederick D. Goode 3 Claims 7 Drawing Figs ABSTRACT: This disclosure relates to an outboard motor ac- U.S. C1 115/18, cessory which virtually eliminates any so-called play" 1 14/172, 74/495 between the motor and its remotely located steering linkage. 1ut.Cl B63h 21/26 This accessory is generally in the nature of an adjustable Field of Search 1 14/170, sleeve which is peripherally tensioned around the steering ac- 172; 115/18; 74/475 tuating arm.
OUTBOARD MOTOR STEERING BRAKE This invention relates generally to an outboard motor steering accessory, and more particularly relates to a device for maintaining a substantially rigid connection between an outboard motor and a remotely controlled steering arm connected thereto.
In recent years the sport of racing relatively small boats of approximately l-20 feet in length powered by highpowered motors of 40 or 60 horsepower or more has become very popular. Many of these racing boats are utilizing motors in the l to 125 horsepower range, with as many as three (3) such engines being mounted on the boat at a time. Typically in the prior art such boats carry a conventional steering wheel mounted at a location remote from the stern, and a suitable mechanical linkage connects the steering wheel to an actuating arm which is in turn connected to the motor. Thus, upon turning the steering wheel, the mechanical linkage will cause the actuating arm to follow a reciprocating motion which in turn causes the outboard motor to pivot to and fro. A hazardous deficiency in the existing state of the art in the steering-to-motor-mount linkage is that there is oftentimes anywhere from 2 to 15 or more of free-play of the motor due to cumulative lost-motion effects in the linkage mechanism. At boat speeds of 40 miles per hour or more, such free-play will cause the boat to assume small but erratic changes of course which must continually be compensated for by oversteering, thus reducing maximum speed considerably. One common way of correcting this free-play" is to springload the motor in one direction by a conventional biasing means, and thus maintain a constant turning movement to be overcome by a corresponding movement in the opposite direction from the steering wheel. The undesirable result of this arrangement is that it is exceedingly tiring on the boat operator, and further, in the event of a sudden release of the steering wheel for whatever reason, the biasing pivots the motor abruptly, thus, in many cases, causing the boat to overturn.
The herein disclosed invention overcomes these aforementioned deficiencies by providing a mechanical brake which eliminates the conventional free-play characteristic of so many motors. Typically, our brake is comprised of a sleeve member having plural internal diameters which are uniformly adjustable by one or more screw members.
With this background in mind, it is accordingly, among the various objects of this invention to provide an outboard motor steering accessory which will limit and substantially minimize uncontrolled erratic movement of the outboard motor due to free-play in the steering linkage.
It is another object of this invention to provide a device which will entirely eliminate any biasing tension on the outboard motor as is conventionally done in the current state of the prior art.
A yet further object of this invention is to provide a steering accessory which is easy and inexpensive and which, accordingly, can be made available to a large segment of the public so as to improve the safety of operation of the outboard motor.
With these and other objects and features in mind, reference is now had to the drawing in which:
FIG. 1 illustrates a stern view of a typical boat and outboard motor arrangement connected to an actuating arm;
FIG. 2 illustrates an elevation view of ourdevice;
FIG. 3 illustrates a right-hand elevation view of the device shown in FIG. 2;
FIG. 4 illustrates a cross-sectional elevation taken on line 4-4 of FIG. 3',
FIG. 5 illustrates a top plan view of the device shown in FIG.
FIG. 6 illustrates a top plan view of the inner bushing shown in FIG. 4; and
FIG. 7 illustrates an elevation view of our device mounted on the actuating arm which is in turn intended to be connected to the outboard motor.
Referring now more particularly to the drawing, there is shown in FIG. I a typical stem 10 of a boat 11 on which is mounted with conventional mounts 12 a high speed outboard motor 13. Projecting from and firmly mounted to the hull of boat 11 at the left of the motor is a rigidly attached sleeve 14 which carries our novel brake assembly 21). Operably connected to a conventional steering wheel (not shown) by a suitable linkage is an actuating arm 15 adapted for sliding, reciprocating motion in and out of sleeve 14. The terminal end portion of actuating arm 15 is rigidly connected to motor mount 16 by any conventional fastening means 17 such as a bolt or pin assembly.
Referring to FIGS. 26, there is shown our novel brake assembly 20 comprised of an outer annular housing 21 which is longitudinally slotted so as to provide a peripheral spring effeet, the spring constant being adjustable by screw means 18, 19. Carried internally in said housing 21 is an oilite bearing 22 which is also longitudinally slotted but in a spiral path. As seen in FIG. 7, annular housing 21 is slidably fitted over the end portion of sleeve 14 and firmly held in place thereon by tightening screw means 18. The outside diameter of actuating arm 15 is dimensional so as to be in sliding relation with the inside diameter of bearing 22. Screw member 19 can be adjusted accordingly so as to regulate the peripheral tension or grip of bearing 22 on the actuating arm 15. Thus this combination of components when suitably adjusted in effect acts as a controlled brake on the motor and any vibrations or loose play between the steering wheel assembly and our brake assembly have no effect whatever on any erratic motor movement.
As seen in FIGS. 2, 3 and 7, a stop means 25 comprised simply of a threaded member and washer acts to retain the oilite bearing in position.
What we claim and desire to secure by Letters Patent of the United States is:
I. In an outboard motor and remotely controlled steering assembly which includes a rigidly mounted, remotely actuatable steering arm carried by a hull-mounted sleeve, the combination therewith of a brake assembly comprising:
a. an annular housing;
b. means providing a plurality of different inside diameters within said housing;
c. said housing being axially discontinuous having its wall portions spaced apart; and
d. threaded means connecting said spaced-apart wall portions for adjustably controlling the internal diameters of said housing.
2. The structure of claim I wherein said means providing a plurality of different inside diameters within said housing comprises in part a porous oil bearing slidably carried within said housing and also having an axial discontinuity which provides spaced-apart wall portions.
3. The structure of claim 2 wherein a stop means is provided at one end of said housing for retaining the oil bearing therewithin.