US1999694A - Vibration absorbing means for outboard motor tillers - Google Patents

Description

April 3o, 1935 F, T, .RGENS y 1,999,694

VIBRATION ABSORBlNG MEANS FOR OUTBOARD MOTOR `TILLERS Filed sept. 14, 1955' Bnventor Gttornegt Peieniewpeso, 1935 L 1,999,694

VIBRATION ABSOBING MEANS FQR- Gw- BOARD M OTQR TILLERS Finn T. Irgens, Wauwatosa, Wis., assigner to ut board Motors (.orpoi'ation9 Milwaukee, Wis., a corporation of Michigan Application September 14, 1933, Seriai No. @delle 12 Claims. (Cl. MI5-iti) This invention relates to vibration absorbing The rubber brake band expander and cushion means for outboard motor tillers. 35 is disposed between the surfaces 3| and 32 to It is the principal object of this invention to normally hold the brake band 3U in frictional enprovide a novel and improved means for steergagement With the braking Cylinder 2l The 5 ing an outboard motor, said means having a rubber block 35 is axially apertured at 36 to 5 vibration-absorbing and tiller-locking connection receive dowel pin 3l, which is secured to engine between the motor and the tiller. The motor is easing 9 by means oi a pin 39. of the Well known and generally used type in Tiller handle Iii is secured to the collar te. which the engine and propeller and shaft hous- This collar is'rotatably mounted on the swivel l ing are rigidly connected to turn as a unit for bracket E3 and is provided with a radially exl0 propelling and steering the boat upon which the tending ilange 5b intermediate its ends enclosdevice is mounted. ing the braking cylinder 2|. The flange 5b is More specically my invention comprises a provided with an aperture l through which the cushioning and braking connection between an dowel pin 3l passes without contact. The pins outboard motor casing and its supportl socon- 38 carried by the collar flange 5@ are spaced to l5 trolled by the tiller that the motor is yieldably engage loosely the shoulders 33 or 34 of the exfree for torque vibration but islocked against pansible brake band 3@ when the handle 45| is steering movement until theA tiller is manipu operated. lated, the lock being freed by the movementvof When the tiller is manipulated in a normal the tiller in anormal steering operation. direction to change the position of the motor 20 In the drawing: for steering, one of the pins 38 engages the brake Figure 1 is a fragmentary side view in elevaband 30 as previously suggested. and the end of tion, partly in vertical section of an outboard the brake band 30 thus engaged Will be forced motor embodying my device. toward the yieldable rubber block 35 and out i Figure 2 is a plan view in section taken on the of frictional engagement with the braking cyl- 25 line 2-2 of Figure l. inder 2|.. A continued movement of the tiller Figure 3 is a fragmentary view similar to Fig- Will, through the rubber block 35 andthe dowel ure 1 taken on the line 3-3 of Figure 2. pin 31, cause the engine I0 to move about its Figure 4 is a detail view taken in horizontal vertical axis in the same direction that the hansection on the line 4 4 of Figure 1. dle 4| is-moved. When the steering movement 30 Figure-5 isadetail view taken in section on the of the tiller ceases, the expansion of bleek 35 line 5-5 of Figure 2. will expand the band 30 into contact with drum Like yparts are identied throughout by the 2| thereby locking the motor against further same reference-characters. movement except for the movement produced by The' outboard motor, of which the engine l0 torque Vibration and accommodated by the 35 is shown in Figure 1, is supported by the drive block 35.1 shaft housing II in which the drive shaft.|2 The aperture 5l is suiciently large toprevent operates. Disposedlabout the drive shaft fhousdGWel pm 3l Contacting With the margin thel'eefing is a swivel bracket or support I3 in which Any vibration of the motor casing 9 will be trans-- 40 the shaft housing and engine turn for steering. mlted directly through the dowel pin 31 to the 40 The swivel bracket is carried by parallel ears |4 rubber block 35 and Will be therein absorbed. and pivot pin I1 from clamp arm I8. Clamp Whatever vibration may pass through the rubber arm Ia has a clamping screw in its outer end for cushion will be transmitted through the brake attachment to the transom of a boat, band 30 to the bracket support I3 rather than to The swivel bracket I3 is provided adjacent its the handle 4i. 45 end 2n with a braking cylinder 2| integral with Thus the handle 4| maybe set to oat upon the and concentric to the axis of the swivel bracket SWVel bracket Sleeve I3, being freely movable I3 and the drive shaft housing II Within the thereon in either direction to the very limited exbraking cylinder 2| is an expansible brake band lent formed by the Clearance between Pins 38 30 wanting with the cynnder as hereinafter and shoulders 33 and 34. This clearance relieves 50 mentioned. Brake band 3u is provided at its ends the tiller Who1ly of the torque vibration of the with surfaces 3| and 32 substantially concenengine and associated parts and makes it postric to clowel pin 31. It is yalso provided with sible for the operator to maintain his grasp con'- 5 shoulders 33 and 34 with which pins`38 are entinuously upon the tiller handle with no strain gageable. of any kind. i 5.5A

When the tiller is to be used for steering purposes, it is always acting uponthe dirigible portions of the apparatus through'the rubber cushion, so that even during an actual steering operation the transmission of vibration from the engine through the tiller will be cushioned.

It isparticularly to be observed that" no special manipulation of the tiller is required for the release of the lock which normally holds the motor fixed upon a given -course. The tiller is simply moved in anormal steering direction and its initial movement releases the brake band in such a manner as to free the motor for rotation in the direction in which the tiller is moving. The motor still remains locked against movement in the opposite direction and as soon as the tiller is released the expansion of the rubber cushion block engages thev band to lock the dirigible parts against movement in either direction, pending further manipulation of the tiller.

Thus the rubber block 35 performs a dual function, serving rst as ,a shock absorber yieldably permitting torque vibration of the engine and related parts with respect to the bracket and the boat, and serving. secondly as an expander for the brake band which normally locks the dirigible motor parts against any steering movement while permittingthe torque vibration afore It will be recognized by those skilled in the art that While the construction herein disclosed has particular advantages and particular significance in the outboard motor art because of the problem -of torque vibration present in that art, nevertheless the locking feature automatically effective to hold and control in any desired position of adjustment has utility wherever it is desired to lock any control in any kind of apparatus.

I claim: s 4. 1. In a device of the character described, the

combination with a swivel bracket and 'a rotate.

rotation of said member, whereby said memberl and said tiller are yieldably connected during manipulation of said member by said tiller.

2. In 'a device of the 'character'described the combination with a bearing sleeve and a member rotatable therein, of a brake drum connected with the bearing sleeve an expanding brake band tted within said drum, means yieldably tending to separate the ends of said band whereby to expand said band into frictional engagementnwith said drum, means establishing a connection between said member and an intermediate portion of said band expanding means, whereby yieldably to permit of movement of said member respect- 'ing said band, and a leverprovided with lost motion connections alternatively engageable with the respective ends of said band, whereby to compress said band against said expanding means to free said band for movement respecting said drum and yieldably -to transmit motion through said expanding means to said member. A

3. In a device of the character described, the combination with a bearing sleeve and a brake drum connected therewith, of a member rotatable in said sleeve, a brake band frictionally engageable with said drum, elastic means between the ends of said band and acting thereon in a direction to maintain said frictional engagement, a lever swiveled for movement about said sleeve and provided with. lost motion connectionsengageable alternatively with the respective ends,

for locking said motor to said support including an,elastic connection'I to said motor, said elastic connection being effective to maintain said lock,-

-ing means normally engagedV to position the motor While permitting of the oscillation thereof pursuant to torque vibration.

5. In an outboard motor the combination with a swivel bracket therefor, of tiller controlled means for releasably locking saidmotor to said bracket, said means including complementary lockable parts and an elastic member connected with one of said parts and with said motor, said tiller being connected with said last mentioned part and coupled solely through said elastic means with said motor.

6. In an outboard motor the combination with a swivel bracket and a motor rotatable therein, of a locking part connected with said -swivel bracket, a tiller provided withI means mounting it for oscilation about said swivel bracket, a second locking part complementary tothe rst and operatively connected to be actuated by the tiller, and elastic means imposed between said last mentioned locking part and the motor, said tiller being connected to the motor only through said elastic means and last mentioned part whereby the position of the motor is yieldably determined by said last mentioned locking part subject 'to' the control of the tiller but free for torque Vibration with respect thereto.

'7. In an outboard motor structure, a support,

a motor rotatable on the support, a handle for H rotating Lthe motor, and meansconnecting said handle with the motor and frictionally engag-` ing said support, said means having a resilient connection interposed between said handle and said motor.

8. In an outboard motor structure, a support, a motor rotatable on the support, a handle 'for rotating the motor, and brake means interposed between said handle and motor, said means comprising a friction element engaging said support, means carried by the handle for withdrawing -saidelement from frictional engagement'` with the support, and resilient means interposed be-` tweensaid friction element and said motor.

9. In combination, a support, a member rol connected with said member whereby the rotative position of said member yis yieldably iixedby said elastic means and carrier and band with respectk A to said member and support, together with means for engaging an end of said band in a direction to overcome said elastic means and release said yband from said drum for the adjustment ot l,the v angular position of said member.

10. In combination, a bearing, a member ro-v'r' tatable therein, a drum substantially concentric 76 with the bearing, a brake band having free ends and applied toI said drum, elastic means between the ends of 'said' band pressing said band into engagement with the drum, the ends Aof said band having shoulders for engagement in a direction to relieve the pressure oi vsaid; band upon thev drum against the pressure of said elastic means, a support for the elastic means connected with said memberfwhereby the position of said memloer is yieldably. fixed through said eiastic means and band with respect to said drum and bearing, and a handle having means alternativeiy engageable with the respective shoulders of said bami in directions to free said band and member for rotation in either direction with respect to said drum and bearing.

il. An outboard motor ystrlusture comprising the combination with a supporting sleeve, of a motor having a bearing in said sieeve for support thereby, a brake drum concentric with said sleeve and connected therewith, a handle pivote@ for vmovement about said sieeve and provided with a iiange comprising a cover for' said drum, a braise band having free ends expansibie within said drum for frictional braking engagement therewith, an elastic block interposed between the 'ree ends of said band and exerting a band expanding pressure, a support for said loiocir conneoteoi with said motor whereby the position oi' said motor is yieldably determined by saioi loioois anni sand with respect to saiddrum and support. shoulder terminals on said band, and pins connected with free to vibrate in said position and is unioelred for rotation to a new position by a normal steering movement et saisi handle.

i2., In an outboard motor structure, the combination with a brake and a motor member rotatabie therein, of a brake band connected with said member and ense-semola vwith seid drum, means elasticallyJ forcing said band, into engage 'ment with the drum, whereh'y automatioaily to iock said member in. any given position of adjustment, a tiller for swinging said motor for steering purposes, and means iooseiy oormecting saisi tiiier with said member and including meehanisrn opposing the action of said elastic means on said brake band, whereby to free saiei'motor for swingins movement preiiminary to the movement thereefiiy said tiiler.

FXNN T. mGENS.

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