US3881441A - Trolling attachment for a propeller - Google Patents

Trolling attachment for a propeller Download PDF

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Publication number
US3881441A
US3881441A US433580A US43358074A US3881441A US 3881441 A US3881441 A US 3881441A US 433580 A US433580 A US 433580A US 43358074 A US43358074 A US 43358074A US 3881441 A US3881441 A US 3881441A
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circular
semi
members
notch
attachment
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Expired - Lifetime
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US433580A
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John F Kader
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Individual
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Priority to US433580A priority Critical patent/US3881441A/en
Priority to CA212,219A priority patent/CA1009907A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/50—Slowing-down means not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for marine engines

Definitions

  • the trolling attachment is made up of two part circular disk of platelike material split in the middle and having a semicircular opening in the center for receiving the spinner of a boat motor.
  • the two halves of the disk are hinged together at one side and a clamping attachment is provided at the opposite side for clamping the attachment to the out side diameter of the propeller hub of a boat motor.
  • the spaced resilient segments are supported on the periphery of the opening for holding the attachment rigidly to the spinner.
  • Another object of the invention is to provide a trolling attachment which is simple in construction, economical to manufacture, and simple and efficient to use.
  • FIG. 1 is a side view of a boat and motor with the trolling attachment on the motor.
  • FIG. 2 is a rear view of the trolling attachment on a boat motor.
  • FIG. 3 is a side view of the attachment shown in FIG. 2.
  • FIG. 4 shows the attachment swung open as to remove it from the boat motor.
  • FIG. 5 is a cross sectional view taken on line 55 of FIG. 4.
  • the trolling attachment is supported on spinner 37 of the boat motor 28.
  • the trolling attachment is basically a disk made up of two semi-circular platelike parts 11 and 12 that are hingedly connected together by hinge 13.
  • a latching attachment 14 is attached, made up of the two members 19 and 20 which are attached to the half 11 of the disk by rivets 22 which pass through the sides of the members 19 and 20 and through the platelike member 11.
  • the fastener member 15 is made up of members and 26 and attached to the plate member 12 by means of rivets 23 which pass through the inner ends of the members 25 and 26.
  • Swivel 17 has a lateral bore which receives pivot 24.
  • Pivot 24 passes through the swivel 17 and through the members 25 and 26 and pivotally supports the swivel member 17 between the members 25 and 26.
  • a threaded stud 21 having a knurled head 29 is threadably received in the swivel member 17. Head 29 has a downwardly facing shoulder 27 which engages the upper surface of the members 19 and 20.
  • Rubber members 30 are spaced around the inner periphery of the semi-circular openings 31 and 32. Members 30 are U-shaped in cross section and are received on the disk which forms the opening which receives the spinner 37 of the outboard boat motor 28.
  • the members 31) may be made of rubber or other suitable resilient material.
  • the first notch 33 is cut out of the first semi-circular disk 11 at a first side thereof and a second notch 34 is cut out of said first semi-circular disk at a position diametrically opposite the first notch 33.
  • a first notch 35 is cut out of the second semi-circular disk 12 and a second notch 36 is cut out of the second semi-circular disk 12 at a position diametrically opposite the first notch 35.
  • the hinge 13 is fixed to the second semi-circular disk 12 by rivets 37 and the first semi-circular disk 11 is swingably attached to the hinge 13 by a single rivet 38.
  • the rivet 38 is supported at the center of curvature of the curved surfaces 39 defining the corner of the first semi-circular disk 11.
  • the spaced members 19 and 20 extend into the notch 34 and provide a space for head 29 when the device is in use.
  • the spaced members 25 and 26 extend into the notch 36.
  • the spaced members l4 and 15, as well as the threaded member 21 are all within the circumference of a circle defining the outer periphery of the circular disk 10.
  • the motor 28 is shown as an outboard motor connected to the boat 40, however, instead of the outboard motor 28, an inboard-outboard motor or other suitable type of motor could be substituted for the outboard motor 28.
  • a trolling attachment for a boat comprising a circular disk made up of two semi-circular members each having a semi-circular oepning formed therein,
  • hinge means connecting said semi-circular members together to form said circular disk, having a concentric circular opening in the center
  • said concentric circular opening being adapted to receive the hub of an outboard motor
  • said hinge means being fixed to one of said semi circular members adjacent said first notch
  • said hinge means pivotally connected to the other of said semi-circular members adjacent said first notch
  • said first notch providing a clearance whereby one of said semi-circular members can swing about said pivot on said hinge.
  • clamping means comprises two spaced members attached to one of said semi-circular members adjacent said second notch therein, providing a space between said spaced members

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A trolling attachment for an outboard motor boat. The trolling attachment is made up of two part circular disk of platelike material split in the middle and having a semicircular opening in the center for receiving the spinner of a boat motor. The two halves of the disk are hinged together at one side and a clamping attachment is provided at the opposite side for clamping the attachment to the out side diameter of the propeller hub of a boat motor. The spaced resilient segments are supported on the periphery of the opening for holding the attachment rigidly to the spinner.

Description

llite States Patent 11 1 [111 3,881,441
Kader 1 May 6, 1975 [5 1 TROLLING ATTACHMENT FOR A 2,820,428 1/1958 Smith 114/145 A PROPELLER Primary ExaminerTrygve M. Blix Assistant ExaminerSherman D. Basinger [57] ABSTRACT A trolling attachment for an outboard motor boat. The trolling attachment is made up of two part circular disk of platelike material split in the middle and having a semicircular opening in the center for receiving the spinner of a boat motor. The two halves of the disk are hinged together at one side and a clamping attachment is provided at the opposite side for clamping the attachment to the out side diameter of the propeller hub of a boat motor. The spaced resilient segments are supported on the periphery of the opening for holding the attachment rigidly to the spinner.
3 Claims, 5 Drawing Figures TROLILING ATTACHMENT FOR A PROPELLER REFERENCE TO PRIOR ART The invention disclosed herein constitutes an improvement over the trolling attachment shown in US. Pat. No. 2,820,428.
OBJECTS OF THE INVENTION It is an object of the invention to provide an improved trolling attachment for an outboard motor boat.
Another object of the invention is to provide a trolling attachment which is simple in construction, economical to manufacture, and simple and efficient to use.
With the above and other objects in view, the present invention consists of the combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawing and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportions, and minor details of construction without departing from the spirit or sacrificing any of the advantages of the inventionv GENERAL DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a boat and motor with the trolling attachment on the motor.
FIG. 2 is a rear view of the trolling attachment on a boat motor.
FIG. 3 is a side view of the attachment shown in FIG. 2.
FIG. 4 shows the attachment swung open as to remove it from the boat motor.
FIG. 5 is a cross sectional view taken on line 55 of FIG. 4.
DETAILED DESCRIPTION OF THE DRAWINGS Now with more particular reference to the drawings, the trolling attachment is supported on spinner 37 of the boat motor 28. The trolling attachment is basically a disk made up of two semi-circular platelike parts 11 and 12 that are hingedly connected together by hinge 13. Diametrically opposite the hinge 13, a latching attachment 14 is attached, made up of the two members 19 and 20 which are attached to the half 11 of the disk by rivets 22 which pass through the sides of the members 19 and 20 and through the platelike member 11. The fastener member 15 is made up of members and 26 and attached to the plate member 12 by means of rivets 23 which pass through the inner ends of the members 25 and 26. Swivel 17 has a lateral bore which receives pivot 24. Pivot 24 passes through the swivel 17 and through the members 25 and 26 and pivotally supports the swivel member 17 between the members 25 and 26. A threaded stud 21 having a knurled head 29 is threadably received in the swivel member 17. Head 29 has a downwardly facing shoulder 27 which engages the upper surface of the members 19 and 20.
Rubber members 30 are spaced around the inner periphery of the semi-circular openings 31 and 32. Members 30 are U-shaped in cross section and are received on the disk which forms the opening which receives the spinner 37 of the outboard boat motor 28. The members 31) may be made of rubber or other suitable resilient material.
The first notch 33 is cut out of the first semi-circular disk 11 at a first side thereof and a second notch 34 is cut out of said first semi-circular disk at a position diametrically opposite the first notch 33. A first notch 35 is cut out of the second semi-circular disk 12 and a second notch 36 is cut out of the second semi-circular disk 12 at a position diametrically opposite the first notch 35. The hinge 13 is fixed to the second semi-circular disk 12 by rivets 37 and the first semi-circular disk 11 is swingably attached to the hinge 13 by a single rivet 38. The rivet 38 is supported at the center of curvature of the curved surfaces 39 defining the corner of the first semi-circular disk 11.
The spaced members 19 and 20 extend into the notch 34 and provide a space for head 29 when the device is in use. The spaced members 25 and 26 extend into the notch 36. Thus when the threaded member 21 is in clamping position shown in FIG. 2, the spaced members l4 and 15, as well as the threaded member 21, are all within the circumference of a circle defining the outer periphery of the circular disk 10. The motor 28 is shown as an outboard motor connected to the boat 40, however, instead of the outboard motor 28, an inboard-outboard motor or other suitable type of motor could be substituted for the outboard motor 28.
Theforegoing specification sets forth the invention in its preferred practical forms but the structure shown is capable of modification within a range of equivalents without departing from the invention which is to be understood is broadly novel as is commensurate with the appended claims.
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. A trolling attachment for a boat comprising a circular disk made up of two semi-circular members each having a semi-circular oepning formed therein,
hinge means connecting said semi-circular members together to form said circular disk, having a concentric circular opening in the center,
said concentric circular opening being adapted to receive the hub of an outboard motor,
resilient members spaced around the inside of said opening for frictionally engaging a spinner,
and a clamping means for clamping said two semicircular halves to said hub.
2. The attachment recited in claim 1 wherein said semi-circular members each have a first notch cut out at one side and a second notch cut out at a second side diametrically opposite said first side,
said hinge means being fixed to one of said semi circular members adjacent said first notch,
said hinge means pivotally connected to the other of said semi-circular members adjacent said first notch,
said first notch providing a clearance whereby one of said semi-circular members can swing about said pivot on said hinge.
3. The attachment recited in claim 2 wherein said clamping means comprises two spaced members attached to one of said semi-circular members adjacent said second notch therein, providing a space between said spaced members,
and a swivel member disposed between said spaced members and pivotally attached to said spaced member, said threaded member having means being adapted to overlie said second spaced members whereby said threaded member is adapted to connect said one semi-circular member to said other semicircular member.

Claims (3)

1. A trolling attachment for a boat comprising a circular disk made up of two semi-circular members each having a semi-circular oepning formed therein, hinge means connecting said semi-circular members together to form said circular disk, having a concentric circular opening in the center, said concentric circular opening being adapted to receive the hub of an outboard motor, resilient members spaced around the inside of said opening for frictionally engaging a spinner, and a clamping means for clamping said two semi-circular halves to said hub.
2. The attachment recited in claim 1 wherein said semi-circular members each have a first notch cut out at one side and a second notch cut out at a second side diametrically opposite said first side, said hinge means being fixed to one of said semi-circular members adjacent said first notch, said hinge means pivotally connected to the other of said semi-circular members adjacent said first notch, said first notch providing a clearance whereby one of said semi-circular members can swing about said pivot on said hinge.
3. The attachment recited in claim 2 wherein said clamping means comprises two spaced members attached to one of said semi-circular members adjacent said second notch therein, providing a space between said spaced members, and a swivel member disposed between said spaced members and pivotally attached to said spaced members by a pivot passing through said spaced members, two second spaced members fixed to the other of said semi-circular members adjacent said second notch therein and extending from said other semi-circular member and overlying a part of said second notch therein, a threaded member threadably engaging said swivel member, said threaded member having means being adapted to overlie said second spaced members whereby said threaded member is adapted to connect said one semi-circular member to said other semi-circular member.
US433580A 1974-01-15 1974-01-15 Trolling attachment for a propeller Expired - Lifetime US3881441A (en)

Priority Applications (2)

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US433580A US3881441A (en) 1974-01-15 1974-01-15 Trolling attachment for a propeller
CA212,219A CA1009907A (en) 1974-01-15 1974-10-24 Trolling attachment for a propeller

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US433580A US3881441A (en) 1974-01-15 1974-01-15 Trolling attachment for a propeller

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120090143A1 (en) * 2007-10-30 2012-04-19 Klaus Wohlfarth Leveling Shock Absorber and Strut Assembly
US20130165304A1 (en) * 2009-08-11 2013-06-27 Goss International Americas, Inc. Nip Rollers with Removable Disks

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1641081A (en) * 1925-05-09 1927-08-30 Heymann Nathan Rat guard
US2059345A (en) * 1935-01-24 1936-11-03 Frederick G Hawney Motor retard
US2226007A (en) * 1939-10-09 1940-12-24 Bernhard Kilian Trolling attachment for motorboats
US2256898A (en) * 1939-04-10 1941-09-23 Gustav A W Ehmke Trolling plate
US2820428A (en) * 1956-11-30 1958-01-21 Harry J Smith Quick change troller

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1641081A (en) * 1925-05-09 1927-08-30 Heymann Nathan Rat guard
US2059345A (en) * 1935-01-24 1936-11-03 Frederick G Hawney Motor retard
US2256898A (en) * 1939-04-10 1941-09-23 Gustav A W Ehmke Trolling plate
US2226007A (en) * 1939-10-09 1940-12-24 Bernhard Kilian Trolling attachment for motorboats
US2820428A (en) * 1956-11-30 1958-01-21 Harry J Smith Quick change troller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120090143A1 (en) * 2007-10-30 2012-04-19 Klaus Wohlfarth Leveling Shock Absorber and Strut Assembly
US8516672B2 (en) * 2007-10-30 2013-08-27 Klaus Wohlfarth Methods for adjusting a shock absorber and strut assembly
US8678401B2 (en) 2007-10-30 2014-03-25 Klaus Wohlfarth Leveling shock absorber and strut assembly
US20130165304A1 (en) * 2009-08-11 2013-06-27 Goss International Americas, Inc. Nip Rollers with Removable Disks

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CA1009907A (en) 1977-05-10

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