US2822999A - Transom trim adjuster for an outboard motor - Google Patents
Transom trim adjuster for an outboard motor Download PDFInfo
- Publication number
- US2822999A US2822999A US495604A US49560455A US2822999A US 2822999 A US2822999 A US 2822999A US 495604 A US495604 A US 495604A US 49560455 A US49560455 A US 49560455A US 2822999 A US2822999 A US 2822999A
- Authority
- US
- United States
- Prior art keywords
- outboard motor
- propeller
- transom
- arms
- shoe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H20/02—Mounting of propulsion units
- B63H20/06—Mounting of propulsion units on an intermediate support
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
- B63H20/08—Means enabling movement of the position of the propulsion element, e.g. for trim, tilt or steering; Control of trim or tilt
- B63H20/10—Means enabling trim or tilt, or lifting of the propulsion element when an obstruction is hit; Control of trim or tilt
Definitions
- the invention contemplates an arrangement for adjusting and/ or compensating the attitude of an outboard. motor when attached to the stern rail or transom of a boat or the like.
- Figure 1 is a top view showing a fragment of the stern portion of a boat with an outboard motor mounted thereupon and including an adjusting arrangement in accord- It is known to incorporate in the assembly of an out- Y board motorized propeller deviceV means ⁇ for allowing the propeller yshaft and propeller assembly to tilt rearwardly and upwardly from the stern of a boat so that it may escape damage when the boat suddenlypasses over an obstacle or enters very shallow water
- the known means have not adequately provided the best solution to the problem of operating an outboard motor and propeller under the varying conditionsv of4 sea-floor frequently encountered by users of these devices.
- An outboard motori is defined herein as a boat propeller, shaft, driving motor and control means assembled asa unit and usually fitted with clamps for attaching to the tailrailjor transom of a boat, so that it resides outboard thereof and has the propeller portion immersed in the water.
- lt is an object of this invention to provide an auxiliary control device for use with an arrangement of the kind described, whereby the attitude of the propeller can be pre-set and restrained in the pre-set attitude.
- More speciticallyran object of the invention is vto provide artranscam trim adjustmentwhich is simple to operate and which can be used by the Voperator in a ready and easy manner to tilt the outboard motor on its mounting to raise the propeller for clearing an obstruction, etc.
- a pitch adjuster or compensator for an outboard motor comprises a cantilever arm positioned to pivot about a medial point co-acting with a pivotal support positioned at or near the tailrail of a boat, means co-operating with one end of the cantilever for cradling an outer portion of the propeller system housing near the propeller head, means co-operating with the other end of the cantilever for pre-setting and restraining the cantilever in a predetermined attitude and means comprising a quick release device for suddenly freeing the cantilever so that it can adopt an attitude determined by the normal urge of the outboard motor assembly.
- the quick release device is modied so as to provide both a quick release and a quick pre-set of the cantilever attitude.
- Figure 2 is a side view of the arrangement depicted in Figure l, and is shown in the relaxed or normal attitude;
- Figure 3 is a top view of the arrangement shown in Figure 1 but with the outboard motor removed to show further details of my invention;
- Figure4 is a side view of the arrangement depicted in Figure 3;
- Figure 4A is asimilar view to Fig. 2 but shows how the regular mounting bracket of the outboard motor clamps the attachment plate to the transom;
- Figure 5 depictsthe arrangement of Figure 2 in a presetattitude, the propeller being tilted by a predetermined amount;
- Figure 6 shows details of a stern plate and slide arrangement forming a combined support and part of a quickacting release and re-set mechanism according to the invention
- Figure 7 shows details of a sliding shoe forming part of a quick release mechanism
- Figure 8 is a detail in perspective ofthe cantilever device.
- a standard outboard motor 6 which is provided with the usual mounting bracket 6 for attachment to the transom 18 of a boat by the clamp screws 60 that form a part of the bracket.
- the control and steering handle is indicated at 61.
- the outboard motor swivels on the stern bracket 6 for steering purposes. Itwill be understood by those skilled in the art that the outboard motor is also mounted to swivel on a horizontal axis, indicated at 62, so that it may bodily, tilt on the stern bracket (see Fig. 5) for clearing obstructions, etc.
- the present invention utilizes theA horizontal swive mounting ot the outboard motor in providing a novel transsom adjustment and comprehends an attachment of' this kind by whichY the outboard motor may also be instantly tilted 'to throw the propeller end rearwardly and upwardly for clearing an obstruction, etc.
- 1 is a U-shaped cantilever having an outboard pair of arms 2, 3 joined to a saddle 4 contoured to receive and seat a lower portion of the drive shaft housing 5 of the outboard motor 6.
- the cantilever 1 also includes a pair of inboard arms 7, 8.
- the arms 2, 3 desirably are curved downwardly and outwardly from the junctures of the arms 7, 8; and the saddle is open to the drive shaft housing 5 in order to engage with the side thereof adjacent to the transom of the boat. This enables the outboard motor to be independently swung outwardly on the pivotal axis 62 of the ordinary mounting bracket 6 by which the outboard motor is attached to the boat transom.
- the arms 7, 8, which are integral continuations of the respective arms 2, 3, are curved downwardly and outwardly. Their distal ends are spaced apart and in the intervening gap there is provided a rocker nut 9 which is connected to said distal ends by trunnions 9 aligned on a horizontal axis. The nut has threaded engagement with a screw 16.
- the cantilever 1 is pierced at 19 and 20 at the junctures of said arms thereof to receive pins by which it is pivoted in ears 10, 11 rigid with an attachment plate 12.
- the plate 12 is fastened against the inner face of the transom 18 in an approved detachable manner. This in the present instance is accomplished by placing the stern bracket 6 over the attachment plate and tightening the screws 60 against this plate.
- the plate 12 includes two parallel slides 13, 14 which retain a captive shoe 15. Slides 13, 14 co-act to form a guideway which is vertically arranged and ⁇ in which shoe 15 slides.
- VScrew 16 is turnable by :handle 17 and is attached swivelly at one end to shoe- 15 by a universal joint 21, and co-acts with threads in nut 9.
- the cantilever is pivoted to the ears 10, 11 so that the arms 2, 3 reside outboard of the tattrail 18 andthe arms 7, S reside inwardly thereof.
- the nut 9 co-acting with screw 16 is pivotally assembled to the extremities of inboard arms 7, 8, so that the nut may swivel to accommodate the sliding action of the shoe in the guideway.
- the plate 12 Since the plate 12 is arranged in an upright position the shoe gravitates to the lower end of the guideway where it is arrested by an end stop 12. This is the lowermost position.
- the nut 9 By pressing downwardly on the handle 17 the nut 9 is turned on the trunnions 9' and the shoe end of the screw is swung upwardly which causes the shoe to slide upwardly thus drawing the inboard end of the cantilever inwardly and throwing the saddle 4 outwardly.
- the propeller end of the outboard motor is swung rearwardly and upwardly to clear an obstruction, etc. Accordingly the operator of the boat can instantly elevate the propeller as occasion demands, such as for planing, clearing weeds or rocks.
- the screw 16 In the elevating operation the screw 16 is used as a lever.
- the cantilever can be tilted over a wide range of angles determined by the movement range of the shoe in the guideway and by the position of the nut 9 on screw 16.
- the pivot points 19, 20 should be located as close as possible to the pivot 62 of the stern bracket.
- the range of the shoe can be changed by varying the position of the nut 9 on the screw 16. By rotating the screw 16, the range of the movement of shoe 15 can be varied between the limits defined by the length of the guideway in which the shoe operates.
- the invention provides an appliance by which the propeller may be elevated and lowered by the operator as occasion demands for planing, clearing weeds or rocks.
- the appliance provides for the instant raising of the propeller in the case of immediate hazard.
- the invention may be constructed as an integral part of an outboard motor, if so desired, instead of an independent device as disclosed in the present specication.
- a transom trim adjuster for an outboard motor of Vthe tiltable type comprising a generally U-shaped cantilever'having a pair of co-extensive outboard arms and a pair of co-extensive inboard arms, the said two pairs of arms diverging from the bight portion of said cantilever, an attachment plate adapted to be secured to the inner face of a boat-transom in a general vertical position, means pivotally connecting the said bight portion of said cantilever to said attachment plate with said outboard and vinboard arms straddling said attachment plate and swingable on said pivotal connection to and away from said attachment plate, a saddle carried by the distal ends of said outboard arms, a nut swivelly carried by the distal ends of said inboard arms, a handled screw threadedly engaged in said nut and having an inner end, and means slidably securing said inner end of the screw to said attachment plate.
- the means slidably securing the inner end of the screw to the attachment plate comprises two parallel slides on the attachment plate spaced apart to provide a guideway; and a shoe swivelly mounted on said inner end of the screw and slidably disposed in said guideway.
Description
Feb. 11, 1958 JjJ; TRoMANHAUsER TRANSOM TRIM ADJUSTER FOR AN OUTBOARD MOTOR Filed March 21, 1955 R U T N E v United States Patent r TRANSOM TRllVI ADJUSTER FOR AN OUTBOARD MOTOR Jesse J. Tromanhauser, Buffalo, N. Y.
Application March 21, 1955, Serial No.V 495,604 2 Claims. (Cl. 248-4) This invention Vrelates to accessories for use with outboard motors and the like. l
In particular the invention contemplates an arrangement for adjusting and/ or compensating the attitude of an outboard. motor when attached to the stern rail or transom of a boat or the like.
- Patented Feb. 11, .1958
FCC?Y Y.
by description of atypical example of construction, the text being aided by reference to the accompanying drawings wherein: Y
Figure 1 is a top view showing a fragment of the stern portion of a boat with an outboard motor mounted thereupon and including an adjusting arrangement in accord- It is known to incorporate in the assembly of an out- Y board motorized propeller deviceV means` for allowing the propeller yshaft and propeller assembly to tilt rearwardly and upwardly from the stern of a boat so that it may escape damage when the boat suddenlypasses over an obstacle or enters very shallow water The known means, however, have not adequately provided the best solution to the problem of operating an outboard motor and propeller under the varying conditionsv of4 sea-floor frequently encountered by users of these devices. .An outboard motori is defined herein as a boat propeller, shaft, driving motor and control means assembled asa unit and usually fitted with clamps for attaching to the tailrailjor transom of a boat, so that it resides outboard thereof and has the propeller portion immersed in the water.
lt is an object of this invention to provide an auxiliary control device for use with an arrangement of the kind described, whereby the attitude of the propeller can be pre-set and restrained in the pre-set attitude.
More speciticallyran object of the invention is vto provide artranscam trim adjustmentwhich is simple to operate and which can be used by the Voperator in a ready and easy manner to tilt the outboard motor on its mounting to raise the propeller for clearing an obstruction, etc.
It is a further object to provide an auxiliary device of the kind stated having the added feature of a quick release and a quick re-set means.
It is a still further object to provide an auxiliary device of the kind stated wherein the means for pre-setting the propeller may be manually adjusted over a specified range to provide a selection of set attitudes for the propeller.
It is again an object to provide a quick pre-set and quick release of the aforesaid adjustable means for selecting a specied attitude of the propeller.
According to the invention a pitch adjuster or compensator for an outboard motor comprises a cantilever arm positioned to pivot about a medial point co-acting with a pivotal support positioned at or near the tailrail of a boat, means co-operating with one end of the cantilever for cradling an outer portion of the propeller system housing near the propeller head, means co-operating with the other end of the cantilever for pre-setting and restraining the cantilever in a predetermined attitude and means comprising a quick release device for suddenly freeing the cantilever so that it can adopt an attitude determined by the normal urge of the outboard motor assembly.
In a further aspect the quick release device is modied so as to provide both a quick release and a quick pre-set of the cantilever attitude.
The invention will now be elucidated in greater detail ance with'the invention;
Figure 2 is a side view of the arrangement depicted in Figure l, and is shown in the relaxed or normal attitude; Figure 3 is a top view of the arrangement shown in Figure 1 but with the outboard motor removed to show further details of my invention;
Figure4 is a side view of the arrangement depicted in Figure 3;
Figure 4A.is asimilar view to Fig. 2 but shows how the regular mounting bracket of the outboard motor clamps the attachment plate to the transom;
Figure 5 depictsthe arrangement of Figure 2 in a presetattitude, the propeller being tilted by a predetermined amount;Y Y
Figure 6 shows details of a stern plate and slide arrangement forming a combined support and part of a quickacting release and re-set mechanism according to the invention; Y y
Figure 7 shows details of a sliding shoe forming part of a quick release mechanism; and
Figure 8 is a detail in perspective ofthe cantilever device.
In theV selected form of the invention depicted in the drawings there is shown a standard outboard motor 6 which is provided with the usual mounting bracket 6 for attachment to the transom 18 of a boat by the clamp screws 60 that form a part of the bracket. The control and steering handle is indicated at 61. -The outboard motor swivels on the stern bracket 6 for steering purposes. Itwill be understood by those skilled in the art that the outboard motor is also mounted to swivel on a horizontal axis, indicated at 62, so that it may bodily, tilt on the stern bracket (see Fig. 5) for clearing obstructions, etc. Y
lThe present invention utilizes theA horizontal swive mounting ot the outboard motor in providing a novel transsom adjustment and comprehends an attachment of' this kind by whichY the outboard motor may also be instantly tilted 'to throw the propeller end rearwardly and upwardly for clearing an obstruction, etc.
Now to the drawing, 1 is a U-shaped cantilever having an outboard pair of arms 2, 3 joined to a saddle 4 contoured to receive and seat a lower portion of the drive shaft housing 5 of the outboard motor 6. The cantilever 1 also includes a pair of inboard arms 7, 8. The arms 2, 3 desirably are curved downwardly and outwardly from the junctures of the arms 7, 8; and the saddle is open to the drive shaft housing 5 in order to engage with the side thereof adjacent to the transom of the boat. This enables the outboard motor to be independently swung outwardly on the pivotal axis 62 of the ordinary mounting bracket 6 by which the outboard motor is attached to the boat transom.
The arms 7, 8, which are integral continuations of the respective arms 2, 3, are curved downwardly and outwardly. Their distal ends are spaced apart and in the intervening gap there is provided a rocker nut 9 which is connected to said distal ends by trunnions 9 aligned on a horizontal axis. The nut has threaded engagement with a screw 16.
The cantilever 1 is pierced at 19 and 20 at the junctures of said arms thereof to receive pins by which it is pivoted in ears 10, 11 rigid with an attachment plate 12. The plate 12 is fastened against the inner face of the transom 18 in an approved detachable manner. This in the present instance is accomplished by placing the stern bracket 6 over the attachment plate and tightening the screws 60 against this plate. The plate 12 includes two parallel slides 13, 14 which retain a captive shoe 15. Slides 13, 14 co-act to form a guideway which is vertically arranged and` in which shoe 15 slides. VScrew 16 is turnable by :handle 17 and is attached swivelly at one end to shoe- 15 by a universal joint 21, and co-acts with threads in nut 9.
The cantilever is pivoted to the ears 10, 11 so that the arms 2, 3 reside outboard of the tattrail 18 andthe arms 7, S reside inwardly thereof. The nut 9 co-acting with screw 16 is pivotally assembled to the extremities of inboard arms 7, 8, so that the nut may swivel to accommodate the sliding action of the shoe in the guideway.
Since the plate 12 is arranged in an upright position the shoe gravitates to the lower end of the guideway where it is arrested by an end stop 12. This is the lowermost position. By pressing downwardly on the handle 17 the nut 9 is turned on the trunnions 9' and the shoe end of the screw is swung upwardly which causes the shoe to slide upwardly thus drawing the inboard end of the cantilever inwardly and throwing the saddle 4 outwardly. As a result the propeller end of the outboard motor is swung rearwardly and upwardly to clear an obstruction, etc. Accordingly the operator of the boat can instantly elevate the propeller as occasion demands, such as for planing, clearing weeds or rocks. In the elevating operation the screw 16 is used as a lever. The cantilever can be tilted over a wide range of angles determined by the movement range of the shoe in the guideway and by the position of the nut 9 on screw 16. The pivot points 19, 20 should be located as close as possible to the pivot 62 of the stern bracket. The range of the shoe can be changed by varying the position of the nut 9 on the screw 16. By rotating the screw 16, the range of the movement of shoe 15 can be varied between the limits defined by the length of the guideway in which the shoe operates.
'By setting the shoe at dead centre, or at any point within the range of its travel the tilt of the screw stands locked in the selected attitude and will remain locked against a very considerable thrust from the propeller. In the up or down attitudes of the shoe the set of the propeller is rmly locked no matter how great the thrust of the propeller.
From the preceding description it will be manifest that the invention provides an appliance by which the propeller may be elevated and lowered by the operator as occasion demands for planing, clearing weeds or rocks.
Moreover the appliance provides for the instant raising of the propeller in the case of immediate hazard.
It will be manifest that the invention may be constructed as an integral part of an outboard motor, if so desired, instead of an independent device as disclosed in the present specication.
The arrangement described Ais regarded as a preferred form of the invention and is believed to be adapted without modification for use with most outboard motors presently available. However, it will be evident that various modifications can be made to the shapes of arms, shoe, slide mechanism, support plate, without departing from .the spirit of my teachings and all such variants are to be regarded as lying .within the ambit of the appended claims.
What I claim is:
1. A transom trim adjuster for an outboard motor of Vthe tiltable type, comprising a generally U-shaped cantilever'having a pair of co-extensive outboard arms and a pair of co-extensive inboard arms, the said two pairs of arms diverging from the bight portion of said cantilever, an attachment plate adapted to be secured to the inner face of a boat-transom in a general vertical position, means pivotally connecting the said bight portion of said cantilever to said attachment plate with said outboard and vinboard arms straddling said attachment plate and swingable on said pivotal connection to and away from said attachment plate, a saddle carried by the distal ends of said outboard arms, a nut swivelly carried by the distal ends of said inboard arms, a handled screw threadedly engaged in said nut and having an inner end, and means slidably securing said inner end of the screw to said attachment plate.
2..A structure as set forth in claim 1, in which the means slidably securing the inner end of the screw to the attachment plate comprises two parallel slides on the attachment plate spaced apart to provide a guideway; and a shoe swivelly mounted on said inner end of the screw and slidably disposed in said guideway.
References Cited in the ile of this patent UNITED STATES PATENTS 149,969 Atkinson Apr. 24, 1874 2,454,972 Martin Nov. 30, 1948 2,569,802 Daniels Oct. 2, 1951 2,713,843 Staley July 26, 1955
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US495604A US2822999A (en) | 1955-03-21 | 1955-03-21 | Transom trim adjuster for an outboard motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US495604A US2822999A (en) | 1955-03-21 | 1955-03-21 | Transom trim adjuster for an outboard motor |
Publications (1)
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US2822999A true US2822999A (en) | 1958-02-11 |
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Application Number | Title | Priority Date | Filing Date |
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US495604A Expired - Lifetime US2822999A (en) | 1955-03-21 | 1955-03-21 | Transom trim adjuster for an outboard motor |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2966876A (en) * | 1958-03-26 | 1961-01-03 | Macwilliam Wallace | Outboard motor position-adjusting apparatus |
US2972328A (en) * | 1957-07-25 | 1961-02-21 | James E Hodgson | Tilting mechanism for outboard motors |
US3062175A (en) * | 1961-08-11 | 1962-11-06 | Jesse W Mitchell | Outboard motor tilting device |
US3814047A (en) * | 1972-07-21 | 1974-06-04 | J Carpenter | Inboard-outboard boat propelling apparatus |
US20020142680A1 (en) * | 2001-03-27 | 2002-10-03 | Anderson Carl E. | Trolling motor |
US20120006966A1 (en) * | 2010-07-09 | 2012-01-12 | Rm Industries, Inc. | Universal Trolling Motor Mount |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US149969A (en) * | 1874-04-21 | Improvement in screw-propellers | ||
US2454972A (en) * | 1945-01-20 | 1948-11-30 | George W Martin | Mounting for outboard motors |
US2569802A (en) * | 1949-02-21 | 1951-10-02 | James W Daniels | Inboard power unit for shallow draft boats |
US2713843A (en) * | 1952-12-22 | 1955-07-26 | Thomas G Staley | Variable depth motor mount |
-
1955
- 1955-03-21 US US495604A patent/US2822999A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US149969A (en) * | 1874-04-21 | Improvement in screw-propellers | ||
US2454972A (en) * | 1945-01-20 | 1948-11-30 | George W Martin | Mounting for outboard motors |
US2569802A (en) * | 1949-02-21 | 1951-10-02 | James W Daniels | Inboard power unit for shallow draft boats |
US2713843A (en) * | 1952-12-22 | 1955-07-26 | Thomas G Staley | Variable depth motor mount |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2972328A (en) * | 1957-07-25 | 1961-02-21 | James E Hodgson | Tilting mechanism for outboard motors |
US2966876A (en) * | 1958-03-26 | 1961-01-03 | Macwilliam Wallace | Outboard motor position-adjusting apparatus |
US3062175A (en) * | 1961-08-11 | 1962-11-06 | Jesse W Mitchell | Outboard motor tilting device |
US3814047A (en) * | 1972-07-21 | 1974-06-04 | J Carpenter | Inboard-outboard boat propelling apparatus |
US20020142680A1 (en) * | 2001-03-27 | 2002-10-03 | Anderson Carl E. | Trolling motor |
US6863581B2 (en) * | 2001-03-27 | 2005-03-08 | Carl E. Anderson | Trolling motor |
US20120006966A1 (en) * | 2010-07-09 | 2012-01-12 | Rm Industries, Inc. | Universal Trolling Motor Mount |
US8684328B2 (en) * | 2010-07-09 | 2014-04-01 | Rm Industries, Inc. | Universal trolling motor mount |
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