US3572280A

US3572280A - Automatic boat bailer

Info

Publication number: US3572280A
Application number: US796999A
Authority: US
Inventors: Donald A Monson
Original assignee: Individual
Current assignee: Individual
Priority date: 1969-02-06
Filing date: 1969-02-06
Publication date: 1971-03-23
Anticipated expiration: 1988-03-23

Abstract

A DEVICE FOR AUTOMATICALLY BAILING WATER FROM A BOAT INCLUDING A BODY MEMBER HAVING A FRUSTO-CONICAL CAVITY IN WHICH IS POSITIONED A VALVE BALL, SAID CAVITY OPEN AT ITS OUTER AND INNER ENDS, THE INNER OPENING HAVING A VALVE SEAT FOR RECEIVING THE VALVE BALL TO CLOSE OFF THE INNER OPENING AND MEANS FOR MAINTAINING THE VALVE BALL IN THE CAVITY.

Description

M8"!!! 23, 1971 D. A. MONSON 3,5

AUTOMATIC BOAT BAILER Filed Feb. 6, 1969 INVENTOR.

m Don/040 l). Mon/501v A rrokuzys 3,572,280 AUTOMATIC BOAT BAILER Donald A. Monson, 439 Coventry Road, Hoyt Lakes, Minn. 55750 Filed Feb. 6, 1969, Ser. No. 796,999 Int. Cl. B63b 13/00 US. Cl. 114-184 6 Claims ABSTRACT OF THE DISCLOSURE A device for automatically bailing water from a boat including a body member having a frusto-conical cavity in which is positioned a valve ball, said cavity open at its outer and inner ends, the inner opening having a valve seat for receiving the valve ball to close oil the inner opening and means for maintaining the valve ball in the cavity.

SUMMARY OF THE INVENTION The invention relates to an automatic boat bailer which is mounted to extend through the lowermost point of the transom of a boat. It is an object of the invention to provide a bailer that will cause water to be automatically sucked from the boat as the boat is moved through the water and which automatically closes olf as the boat is brought to rest in the water. It is a further object to provide a bailer that automatically bails water from a boat when the boat is removed from the water. Thus a bailer is provided that keeps a boat free of water at all times. The bailer does away with the need for drain plugs with the boat out of the water and pump means when the boat is in the water.

These and other more detailed and specific objects Will be disclosed in the course of the following specification, reference being bad to the accompanying drawings, in which FIG. 1 is a fragmentary sectional view through the transom and bottom of a boat showing an automatic boat bailer embodying the invention mounted in the transom.

FIG. 2 is a longitudinal sectional view of the bailer of FIG. 1 with the valve balls shown in closed position in broken lines.

FIG. 3 is a sectional view on the line 3-3 of FIG. 2.

Referring to the drawings in detail, the automatic boat bailer A is mounted in the hole 10 which extends through the transom T of the boat B. The bailer A includes the hollow cylindrical housing 12 which has formed on the outer end thereof the annular flange 14. The flange 14 abuts the outer surface of the transom T when the bailer A is in operative position on the boat B. The numeral 16 designates a first cylindrical insert for the cylindrical housing 12. The insert 16 includes the annular flanges 18 which terminates at the inner edge thereof in the main and generally cylindrical body portion 20. Formed in the insert body portion 20' is the axially disposed frustoconical outer cavity 22 with the circuit and concentric valve seat edge 24. Extending from the seat edge 24 is the frusto-conical inner cavity 26 which is juxtaposed to the cavity 22 and which forms the annular shoulder 28 at its outer edge. The circular seat 24 forms the axial passage 29.

The numeral 30 designates a baflle generally in the form of a fiat disc and it has formed therein the axial valve seat hole 32 with the chamber edge 34. The outside diameter of the bafile 30 is such that it fits snugly within the cylindrical housing 12 and it is positioned against the annular shoulder 28. The baflle 30 further includes the plurality of spaced

openings

36, 38 and 40 spaced outwardly of the valve seat hole 32.

Further provided is a second cylindrical insert 42 for United States Patent the cylindrical housing 12 which is substantially identical to the insert 16 and includes the generally cylindrical body portion 44. The body portion 44 has formed axially therein the frusto-conical cavity 46 terminating at its inner end in the circular and concentric valve seat edge 48 which forms the axial passage 50. The

inserts

16 and 42 fit snugly within the cylindrical housing 12 with the insert 42 in abutment with the batfle 30.

Positioned in the cavity 22 is the valve ball 23, the diameter of which is greater than the diameter of the valve seat 24 so that it will seat thereon to close Off the same. Similarly, there is positioned in the cavity 46 the valve ball 47 which has a diameter greater than the valve seat 48 whereby the same may be closed 01f. The valve ball 47 is also greater in diameter than the valve seat hole 30.

The cylindrical housing 12 has formed on the inner end thereof the radial wall 52 formed with the axial hole 54. Positioned between the inner end of the insert 42. and the Wall 52 is the screen 56 which screens the hole 50 and prevents foreign objects from entering the interior of the bailer A. With the bailer A in the hole 10' of the transom T, the flange 14 of the housing '12 is in abutment with the rear flat surface of the transom. 'Ihe flange 18 of the first insert 16 is flush up against the flange 14 and positioned against the flange 18 is the screen 58 which covers the circular opening 60. The screen 58 is held in position by the ring 62 and the entire bailer A held securely in the hole 10 of the transom by three spaced screws 64 extending through the ring, screen,

flanges

14 and 16 and anchored in the transom. The screen 58 prevents foreign matter from entering the bailer and it maintains the ball valve 23 in the cavity.

In the operation of the device, let it be assumed that there is water in the boat B. As the boat is moved forward in the water, pressure is reduced at area X compared to that in the water in the boat B. As a result of the reduced pressure and the shape of the cavities the

valve balls

23 and 47 move off the

valve seats

24 and 48, respectively, whereby water is sucked through the entire bailer from the inside of the boat to the outside thereof as indicated by the arrows in FIG. 2. As the boat slows down, the water which attempts to enter the boat closes off the valves. The formation of the cavities directs the valve balls positively and directly to the valve seats.

When the boat B has water in it and is taken from the water and placed on a support in the form of a trailer or the like, the pressure of the water in the boat moves the valve halls off the seats whereby the boat is bailed. When the boat is placed in the water, the pressure of the water causes the balls to move upon the

seats

24 and 48 \as shown in broken lines FIG. 2 and keeps the same closed when the boat is at rest. Only one ball and seat is required but the second ball is provided for safety in the event the other ball sticks open.

It is understood that suitable modifications may be made in the structure as disclosed, provided such modifications come within the spirit and scope of the appended claims. Having now therefore fully illustrated and described my invention, what I claim to be new and desire to protect by Letters Patent is:

1. A device for automatically bailing water from a boat, comprising: a

:(a) a housing generally horizontally arranged to extend through the transom of a boat to be bailed such that the first end of the housing is adjacent the outer surface of the transom and the second end of the housing is adjacent the inner end of the transom;

(b) a first member, positioned within the housing adjacent the outer end thereof, the first body member having a cavity formed therein to define an outer opening adjacent the first end of the housing and to define an inner opening in the form of a circular valve seat;

(c) a first spherical valve member, positioned within the cavity of the first body member, of a diameter greater than the diameter of the valve seat for seating on the valve seat and preventing the flow of water therethrough as a result of water pressure upon the valve member and the valve member moving off the valve seat with a reduction of pressure thereon;

(d) means, positioned adjacent the outer opening of the first body member, for maintaining the first valve means in the cavity of the first body member;

(e) a second body member, positioned within the housing adjacent the inner end thereof, the second body member having a cavity formed therethrough to define an inner opening in the form of a circular valve seat adjacent the second end of the housing and to define an outer opening;

(f) second spherical valve means, positioned within the cavity of the second body means, of a diameter greater than the diameter of the valve seat for seating on the valve seat and preventing flow of water therethrough as a result of water pressure upon the valve member and the valve member moving off the valve seat with a reduction of pressure thereon; and

g) means, positioned adjacent the outer opening of the 4 second body member, for maintaining the valve member in the cavity of the second body member.

2. The device of claim 1 in which the cavity Within the first body member and the cavity within the second body member are tapered in formation.

3. The device of claim 2 in which both the cavity Within the first body member and the cavity within the second body member are frusto-conical in formation.

4. The device of claim 3 in which the housing is cylindrical, and in which the first body member and the second body member are adjacent cylindrical members.

5. The device of claim 4 in which the means for maintaining the first valve means in the cavity of the first body member comprises a screen covering the outer opening of the first body member.

6. The device of claim 5 in which a screen is positioned to cover the inner opening of the second body member.

References Cited UNITED STATES PATENTS 412,982 10/1889 Schenck 1l4197 1,079,627 11/1913 Adams 114-197 3,459,150 8/1969 Lunde 114l83 ANDREW H. FARRELL, Primary Examiner