Патент USA US2127744код для вставки
‘Aug. 23, 1938. 0. C. LINTHWAITE OUTBOARD MOTOR Filed May 22, 1955 I'l[1‘ I 2,127,744 . s Sheets-‘Sheet 1 / INVENTOR. v OWEN Q._I~IHTHWAITK" fga/Mm/ . ATTORNEY Aug. 23, 1933. 0. c. LINTHWAITE v 2,127,744 OUTBOARD MOTIOR Filed May 22, 1935 3 Sheets-Sheet 2 a 1 _ _ Z3. Aug. 23, 1938._ I o. c. LIINTHWAITAE I 2,127,744 OUTBOARD MOTOR Filed May 22. 1955 ‘ 3 Sheets-Sheet 3_ W3 93 /. 2757 .3; ill 775 . 93 mmvrozi. OWEN 'C. LmTHwmTK“ ‘ A TTORNEY. Patented ‘Aug. 23, 1938 2,127,744 PAATENT' OFFICE ' UNITED STATES 2,127,744 OUTBOARD MOTOR Owen C. Jtinthwaite, South Bend, Ind., assignor to Bendix Products Corporation, South Bend, Did, a corporation of Indiana ‘Application May 22, 1935, Serial No. 22,709 9 Claims; (01. 115-18) securely clamped to the transom of the boat This invention relates to outboard motors, and In the operation of motors of this type it is desirable that convenient adjustable ‘means be even though the transom may be slightly out of line or warped. Further objects and advantages of this in vention will be apparent from the following de tailed description, taken in connection with the provided whereby the motor may be attached accompanying drawings, submitted for purposes is more particularly directed to means for ?x =_ing an outboard motor to a boat, and novel means for steering the boat. * a . to various types of boats having supporting tran- , of illustration only, and not intended to de?ne the scope of the invention, reference being had ' soms set at different angles. It is therefore de 10 sirable to provide means whereby the angle be for that purpose to the subjoined claims. _ In the drawings, wherein similar reference characters refer to similar parts! throughout the tween the engine drive shait and the transom of ‘the boat can be varied with the greatest ease. It has been found that considerable torque vibration, inherent in-the motor, is transmitted 15 . to the steering mechanismlwhere the axis about which the motor is turned for steering is coin several views: board motor incorporating the present invention; - Figure 2 is an enlarged sectional view of a por cident with the engine drive shaft. This vibra tion of Figure 1; , 5, showing a modi?ed form of the invention; Figure 7 is a detail view showing a modified 25 form of the bracket adjusting means; Figure 8 is a view similar to Figure 2 showing a still further modified form of the invention; ' and ' \ by the reference numeral l0, ?xed to the tran som l2 of a boat. The outboard motor Ill in cludes a hooded internal combustion engine l4 provided with a fuel tank It, and adapted to drive a propeller IB by means of an engine drive shaft 20 extending through an upper housing _ section 22 and a lower housing section 24. The‘ propeller is protected from injury, due to strik- , ing against an object, by a protecting ?n 26. The lower housing section 24 carries an anti cavitation plate 28, adapted to overlie the pro- _ peller l8 to prevent cavitation of the propeller. A stream-lined ?n 30, carried by the housing 45 24, and overlying the anti-cavitation plate 28, is adapted to facilitate steering operations‘of the 4 Another object of the invention is to provide a strong, but extremely simple and light, bracket 50 of the class hereinafter described. ~ Referring more particularly to Figure 1, there Another object of the invention is to provide 40 an adjustable co-pilot mechanism whereby any predetermined course may be steered without the attention of the operator. A still further object vof the invention is to provide a bracket of simple design and con 45 struction whereby all of the pieces may be formed by die-casting, for ?xing an outboard motor to > a boat. ' is shown an outboard motor indicated as a whole . Another object of the invention is to provide a steering mechanism wherein, the axis of rota 35 tion'of the motor is non-concentric with the axis of the engine drive shaft, to decrease the effect of normal engine vibration upon the steering mec_hanism. - I Figure 9 is a top plan view of Figure 8. angle between the engine drive shaft and the transom of the boat can be quickly and easily made. ' Figure 5 is a top plan view of Figure 4; ,V Figure 6 is a detail view of a‘ portion of Figure; -It is therefore an object of this invention to provide means for ?xing an outboard motor to a boat in such a manner that variations in the 3 ' 'a modi?ed form of the invention; constantly manipulating the steering mech anism. - Figure 3 is a top plan view of Figure 2 taken on the line 3-3 of Figure}; Figure 4 is a view similar to Figure 2, showin tion r'endersit difficult to steer any desired course, andrenders it practically impossible to V ‘20 ‘adjust the steering mechanism whereby mini mum force will be required for normal steering operations of the boat, without having the ad justment so loose that it is impossible to steer a predetermined course without .the operator 2 . Figure l is a view in'side elevation of an out - , A furtherv object ‘of the invention is to pro vide means for preventing the vibrations of the engine fromlbeing transmitted to the boat. A still further object of the invention is to 55 provide a bracket wherein the motor may be boat. a , _ ' Steering operations of the boat are e?ected by ' turning the outboard motor In about an axis de 50 ?ned by a pressure plate 32 iournalled in the upper housing section 22, and separated there from by resilient washers 34 interposed between the motor ill and the‘pressure plate 32, to dampen vibration of the engine It. The pressure plate 55 2 2,127,744 32 is provided with a pressure arm 34 formed in tegral therewith. As indicated above, the motor III is ?xed to the pressure plate 32 and is rotatable about the longi tudinal axis of this plate. The pressure arm 34 is rotatably mounted upon a stud 36 project ing therethrough, so that as the pressure arm 34 is moved in a vertical plane the angle be tween the drive shaft 20 of the motor, and the transom I2 of the boat is varied. The stud 36 passes through a pair of brackets 38 having transom-engaging projections 40, and provided with arms 42 adapted to receive manually oper able adjusting screws 44 to securely clamp the brackets 38 to the transom I2 of the boat. The arms 42 are provided with web sections 45 pro vided with a plurality of apertures 46 designed to receive a bolt 48, which in turn is engaged by a hook 50 carried by the pressure arm 34. To vary the angle at which the motor I0 operates, it is only necessary to move the bolt 48 to a different aperture 46. If the propeller protecting ?n 26 should strike an object, the motor I0 will be rotated about the 25 axis of the stud 36 to move the propeller IEI to such a position that damage thereto will be avoided. This is possible in view of the fact that the book 50 carried by the pressure arm 34 merely disengages the bolt 48 and rotates in a 30 clockwise direction about the stud 36 until its movement is restricted by contact with the tran sofn I2 of the boat. In the embodiment shown in Figure 4 the bolt 48 ‘and hook 50 of Figure 2 have been replaced r by a snap joint, wherein the pressure arm I34 is provided with a cross member I35 having pins I31 adapted to fit into the apertures I46 to de termine the position of the pressure arm I34 with reference to the webs I45 carried by the arms I42. The cross member I35 is hollow and is provided with slots I31 to receive levers I39 pivoted to the pressure arm I34 by pins IN. The levers I33 operate the pins I3? ‘and are yieldingly urged in a direction to hold the pins I31 into the apertures M6" by means of springs I43 interposed between the pressure arm I312 and the levers‘ I39. In this embodiment, it is neces sary only to compress the levers I 39 and move the pins I31 to a different aperture I46 to vary the angle between the drive shaft 23 of the motor It, and the transom I2 of the boat. In the embodiment shown in Figure 6, the pins I31 are actuated by means of a single coiled spring I43 ?xed to the pressure arm I34 by in the same manner as the pressure plate 32 of the other embodiments. A pressure arm 251 is pivotally mounted on a stud 259 passing through the pressure plate 255. The pressure arm 251 is provided with a foot 26I designed to engage a pad 263 of the pressure plate 255. A pair of clamping brackets 265, carried by the stud_259, are provided with boat-engaging projec tions 261 adapted to cooperate with manually ad J'ustable studs 269 carried in arms 21I of the 10 bracket 265 to securely fix the bracket to the transom 2I2 of the boat. A pressure bar 213 extends between the arms 21I of the bracket 265 to securely tie the bracket members together. An adjustable stud 215 projects through the pressure 15 bar 213 and is screwed into the pressure arm 251 as clearly shown in Figure 8. In this embodiment the thrust of the motor is transmitted through the pad 263 to the foot 26I of the pressure arm 251-. The thrust is then 20 transmitted through the adjustable stud 215 to the pressure plate 213, and from the pressure plate 213 to the arms 21I of the brackets 265 ?xed to the transom 2 I2 of the boat. The motor is rotatable about the stud 259, and the angle between the engine drive shaft and the transom 2I2 of the boat may be adjusted by manipulat ing the adjustable stud 215, so that the motor may be set atany desired angle with respect to the transom of the boat. 30 It has been found that when the motor is turned about the 'axis of the engine drive ‘shaft to effect the steering of the boat, that consider able vibration and torque interference is trans mitted through the steering mechanism. The motor will therefore exert a turning moment which must be constantly resisted by the operator, in order to follow any predetermined course. This turning moment varies between rather wide limits and is dependent in part upon the speed 40 of the engine. It has been found that torque interference of the motor with the steering mechanism is com pletely eliminated when the steering axis is non concentric with the axis of the engine drive shaft. In the present invention, the steering of the boat is effected by rotating the motor I6 about the longitudinal axis of the pressure plate 32, which of course is non-concentric with the axis of the engine drive shaft 28. _ The pressure plate 32 is rotatably mounted in the upper housing section 22, and is insulated therefrom, at the lower end, by the resilient washers 34 to prevent vibration of the motor II] from being transmitted to the boat. The upper end of the plate 32 is journalled in a clamping bracket SI resiliently connected to the upper housing section 22 by any suitable means, such as the bolts 93 passing through the resilient stuck, or for any other reason fail to slide out washers 95. A manually operable tiller 60, ?xed 60 of the aperture I46. to the bracket SI, operates to rotate the motor In the embodiment shown in Figure 7, the pins In about the axis of the pressure plate 32. I31 are yieldingly urged to the extreme posi- ' The bracket 9| ‘is provided with a so-called tion by means of a spring I5I. The pins I31 are co-pilot or manually operable adjusting screw 91 actuated by means of knobs I53 ?xed in the body to vary the amount of force required to be ex of the pins, and slldable in the slots I31 to actu— erted on the tiller 60 to rotate the motor I0 ate the pins. about the axis of the pressure plate‘ 32. In the embodiments shown herein, the angle It is thus possible to follow any desired pre between the motor and the boat can be ad determined course, or to vary the force required to be exerted upon the tiller 60 to effect steering 70 justed with the greatest of ease, and it is there fore believed that more e?icient operation of the operations of the boat by merely manipulat motor will result because of the accessibility and ing the co-pilot to interpose any desired amount the ease with which this adjustment can be made. ' of friction between the housing 22 and the plate In the embodiment shown in Figure 8, the 32. pressure plate 255 is secured to the motor I0 vThis application is a continuation-in-part of 75 means of a‘pin I41. In this embodiment a stop ring I49 is provided intermediate the pins I31 to prevent the force exerted upon the spring I43 from being applied to remove only one pin, in the event that the other pin should become 3. . ‘ 2,127,744 my co-pending application Serial No. 2,085,, filed . pin is moved to diiferent of the‘spaced apertures. 6. In an outboard motor assembly for a boat While the invention has‘ been described with ' having a. transom, an internal combustion en gine, a propeller, a housing extending between particular reference to certain preferred em bodiments, it is not intended to limit the scope the engine and the propeller, va drive shaft posi of- the invention to the embodiments described, tioned in the housi , a pressure plate rotatably nor otherwise than by the terms of the follow- - mounted on the housing eccentrically with refer ence to the drive shaft, a bracket having spaced ' ing claims. arms adapted to engage the transom, a web hav .I claim: . v . 10' 1. In an outboard motor for a boat, a drive ing a plurality of spaced apertures carried by said 10 shaft, means including a bracket for turning the arms,‘ a pin extending through the apertures, a ‘motor about an axis for steering, a resiliently‘ pressure arm carried by the- pressure plate, mounted tiller forturning the motor about said means to rotatably mount the pressure arm with . axis for steering, and manually operable clamp respect to the bracket,‘one end of said arm being January 16, 1935. ing means including spaced oppositely disposed conica1\ resilient means interposed‘ between the bracket and the motor for varying the-resistance to steering movements. _ a 2. An‘ outboard motor having a drive shait, a housing surrounding the drive shaft, a pres ' sure plate including a bracket pivotally mounted with respect to the housing, a pressure’ arm designed toengage the pressure plate and the 15 other end being designed to engage the pin to vary the angle between the housing and the transom in one direction as the pin is moved to different of the spaced apertures, and means in cluding a manually operable tiller to rotate the 20 mlggr assembly about the axis of the pressure P - “' mounted on the bracket and engaging the pres 7. A bracket having a pair of spaced boat sure plate, clamping means ‘pivotally mounted engaging members, ‘webs having a plurality of spaced apertures ‘carried ' by said members, a adjustable means between the pressure arm and pressure plate adapted to be pivotally and re the clamping means to limit the angle between siliently mounted to an outboard'motor eccen the drive shaft and the boat in one direction trlcally with reference to the drive shaft, a pra sure arm carried by the pressure plate, means to only. , ‘ 3. In an outboard motor for a boat, a drive pivotally mount the pressure arm between said 30 shaft, a housing surrounding the drive shaft, a members, one endof said arm being adapted to, - on said bracket to ?x the motor to a boat, and pressure plate including a bracket pivotally mounted with‘ respect to the housing, a pressure engage the pressure plate, and‘mearis including ‘ a pin extending through the spaced apertures and adapted to be engaged by one end ‘01’ the arm'mounted on the bracket and normally en ~ gaging the pressure plate at one end, clamping arm to vary the angle. between the pressure plate 35 means carried by said bracket to fix the motor . and said members in one direction. 8. In an outboard motor for a boat'having a. ‘to a boat, and adjustable means associated with I transom, an internal combustion engine, a pro the clamping means and adapted to be en gaged vby one end of the pressure arm to vary the peller, a housing extending between the engine angle between the drive shaft and the boat in one direction only and to permit pivotal. move ment aboutsaid bracket. . 4. In an outboard motor assembly for a boat having atransom, an internal combustion en , ' gine, a propeller, a housing extending between the engine and the, propeller, a‘ pressure plate pivotally mounted non-concentrically with re-. 'spect to the‘ housing, a bracket adapted to en gage the transom, a web having a plurality of spaced apertures carried by the bracket, a pin extending through the apertures, and a pressure arm carried by the pressure plate, a portion of ‘l the arm‘ beingshaped in the form of a hook to engage said pin to limit the angle between the housing and the transom in one direction. 5. In an outboard motor assembly for a boat having a transom, an internalmombustion en and the propellena drive shaft in the housing, 40 and means to attachv the outboard motor to the transdm of the boat, said means including a pair of spaced boat‘ engaging members, webs having a plurality of spaced apertures carried by said members’, a member pivotally and resiliently 45. mounted,to the housing eccentrically with re spect to the drive shaft, a projection on said plate rotatably mounted between said members, and means carried by said projection and cooperat ing with said apertures to limit the angle be 50 tween the drive shaft and the transom in one direction only. ' _ , 9. In an outboard motor for a boat having a transom, an internal combustion engine, a pro peller, a housing extending between the engine 55 and the propeller, a drive shaft in'th'e housing, . and means to ?x the outboard motor to the gine, a propeller, a housing extending between‘ transom o! the boat, said means including a the engine and the propeller, a pressure plate ,pair of spaced boat-engaging members, webs hav so pivotally and eccentrically mounted'with respect ing a plurality of spaced apertures carried by said 60 ,members, a plate rotatably mounted with re ' , to the housing, a bracket having spaced adapted to engage the transom, a‘web having, a spect'to the housing, a projection on said plate plurality of spaced apertures carried by said arms,-a pin extending through the apertures, and rotatably mounted between said members, and means including a bolt extending between the webs to restrict the movement of the projection 65 portion of the arm being designed to engage the' in one direction only to determine the angle be-v pressure plate at a point remote irom'the pivotal tween the drive shaft and the transom oi ‘the a pressure arm carried by the pressure plate, a mounting and another portion being designed to engage the pin to vary the anglev between the 70 housing and the transom in one direction asthe boat. ‘ ' owns 0. .