US2187633A - Boat ladder - Google Patents

Boat ladder Download PDF

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Publication number
US2187633A
US2187633A US236467A US23646738A US2187633A US 2187633 A US2187633 A US 2187633A US 236467 A US236467 A US 236467A US 23646738 A US23646738 A US 23646738A US 2187633 A US2187633 A US 2187633A
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Prior art keywords
ladder
boat
boat ladder
stern
float
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Expired - Lifetime
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US236467A
Inventor
Allyn M Smith
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Allyn M Smith
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Priority to US236467A priority Critical patent/US2187633A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B27/00Arrangement of ship-based loading or unloading equipment for cargo or passengers
    • B63B27/14Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts

Description

Jan. 16, 1940. A. M. SMITH 2,187,633
BOAT LADDER Fild QCb. 22, 1938 2 Sheets-Sheet 1 Inventor By Qwaaifih A iiomeys A. M. SMlTH BOAT LADDER Jam 16, 1940.
2 Sheets-Sheet 2 Filed Oct. 22, 1938 Attorneys Patented Jan. 16, 1940 UNITED STATES PATENT OFFICE i 1 Claim.
This invention relates to a handy ladder and means for detachably mounting the same on the stern of a rowboat, float or equivalent water craft, and the purpose of the invention is to provide a self-adapting swingably mounted ladder so pro portioned and arranged as to enable a bather to conveniently dismount into the water, or to just as conveniently climb back into the boat from the Water.
It is generally conceded that a conventional speedboat or a rowboat cannot ordinarily be used to any degree of success as a float when swimming and diving, inasmuch as the relatively high side-walls and such use difflcult and inconvenient, and unsafe. With this in mind I have found it expedient and practicable to adopt a simple and economical rigid ladder and adapter attachment which arrangement, it is believed, aptly fulfills the requirements and needs of an assemblage of this type.
Briefly, the preferred embodiment comprises clamping blocks, rigid hand-grips and a simple metal or wooden ladder pivotally suspended from the hand-grips.
Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings.
In the accompanying drawings, wherein like numerals serve to identify corresponding elements throughout the views:
Figure 1 is an elevational view observing the stern of a conventional rowboat and showing the ladder and its equipment attachment mounted in place for use.
Figure 2 is a view at right angles to Figure 1, the rear end of the boat being shown in longitudinal section.
Figure 3 is a top plan view of Figure 1 showing a fragmentary portion of the boat.
Figure 4 is a detail perspective view.
Referring to the drawings, the boat is denoted at A and the stern-board at B.
The ladder 5 is a simple wooden or metal struc ture with side-rails and steps. The length of the ladder will vary under diiferent Water conditions. Ordinarily, however, a relatively short ladder will do. The upper end of the side-rails are pivotally bolted as at the points 6 to handle units 1. The parts 1 are suitable openwork of segmental form to provide satisfactory hand-rails. The lower portions are rigidly secured by bolts or the like 8 to the upper ends of duplicate adapter and attaching blocks 9. The blocks are of sturdy wood or equivalent material and somewhat wedgeshaped in form. The inclined rear edges I!) serve as braces and abutments for the adjacentportions of the side-rails of the ladder. Then too, each block includes a notch to take-over the stern-board as shown in Figure 2. It will be noted that the notch is so formed as to provide an inclined edge I l to bear firmly against the board B. The opposite edge portion of the notch is straight as at 32 and, therefore, the notched area defines a depending limb 3 to satisfactorily accommodate the clamping screw M.
It will be observed that the ladder constitutes the means for assembling the hand-grip fixtures and the attaching blocks. That is to say, the ladder is the component part which adjoins the two blocks and their respective hand-grip units in a predetermined order for quick attachment and use. Consequently, the parts each contribute their proportionate function in providing a unitary assemblage which is well adapted for the purposes intended.
Although the invention is shown as attached to the stern-board, it is obvious that it is susceptible of attachment to one of the side walls if so desired. Not only this, it is believed that it is Within the purview of the inventive concept to refer broadly to the boat as a float. In other words, I have invented, I believe, a ladder and attachment means for a swimming float or equivalent structure. In fact, ordinary floats could be readily modified to accommodate this invention, or the attaching block could be slightly modified to facilitate mounting on a float.
It is to be noted that, as before stated, the ladder will vary in length. Because of this it is evident that when the boat is in unusually shallow water, it is essential that the hinging or pivotal construction be employed. This is so since the ladder then becomes self-angling or accommodating and drags along the bottom without interfering with the forward motion of the boat. If the boat is moved in reverse while in shallow water, the ladder can be lifted and held up to avoid obstructions.
It is thought that the description taken in connection with the drawings will enable a clear understanding of the invention to be bad. Therefore, a more lengthy description is thought un necessary.
While the preferred embodiment of the invention has been shownv and described, it is to be understood that minor changes coming within the field of invention claimed may be resorted to if desired.
I claim:
A boat ladder comprising a pair of handle exterior portions having an outer edge sloping downwardly and away from the boat and a ladder having its upper end pivoted to the bars of the handle members at a point where upper portions of the ladder will rest against the sloping portions of the clamping members.
ALLYN M. SMITH.
US236467A 1938-10-22 1938-10-22 Boat ladder Expired - Lifetime US2187633A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485413A (en) * 1945-03-06 1949-10-18 Allen R Ross Ladder
US2536966A (en) * 1947-06-13 1951-01-02 Teller Clarence Roy Ladder or ramp for boats
US2669733A (en) * 1951-09-14 1954-02-23 Harold J Picker Detachable platform for small boats
DE1077096B (en) * 1958-09-06 1960-03-03 Paul E Loewrigkeit Ascent and descent for small craft, especially sports craft
US2964767A (en) * 1958-12-03 1960-12-20 Jack K Egbert Portable gangplank and dock
US3052896A (en) * 1961-06-21 1962-09-11 Mcculloch Corp Boat construction
US3075612A (en) * 1961-07-17 1963-01-29 Combined Ind Inc Emergency escape ladder
US3285367A (en) * 1965-02-12 1966-11-15 All Time Mfg Company Inc Emergency boat ladder
US3305045A (en) * 1964-11-02 1967-02-21 Schlecht Raymond Joseph Boat ladder
US3420558A (en) * 1966-04-15 1969-01-07 George R Whitten Jr Mounting and grounding device for swimming pool equipment
US3804200A (en) * 1973-02-05 1974-04-16 R Sandberg Bottom step unit for boat ladders
US3869742A (en) * 1974-02-28 1975-03-11 Said James Douglas Thompson To Ladder and mounting for small boats
US4365689A (en) * 1981-02-06 1982-12-28 Francis Dever Tilting marine ladder
US4396030A (en) * 1982-01-18 1983-08-02 The Oyster Tent Company Car top folding tent
US20060000405A1 (en) * 2004-07-02 2006-01-05 Spencer Jeffrey G Marine bow hand rail mount removable ladder
US20160108671A1 (en) * 2013-08-12 2016-04-21 Compagnie Generale Des Etablissements Michelin Custom mold press ladder
FR3103460A1 (en) * 2019-11-21 2021-05-28 Jean Marc Seguin Device for keeping a user outside of a boat at reduced speed

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2485413A (en) * 1945-03-06 1949-10-18 Allen R Ross Ladder
US2536966A (en) * 1947-06-13 1951-01-02 Teller Clarence Roy Ladder or ramp for boats
US2669733A (en) * 1951-09-14 1954-02-23 Harold J Picker Detachable platform for small boats
DE1077096B (en) * 1958-09-06 1960-03-03 Paul E Loewrigkeit Ascent and descent for small craft, especially sports craft
US2964767A (en) * 1958-12-03 1960-12-20 Jack K Egbert Portable gangplank and dock
US3052896A (en) * 1961-06-21 1962-09-11 Mcculloch Corp Boat construction
US3075612A (en) * 1961-07-17 1963-01-29 Combined Ind Inc Emergency escape ladder
US3305045A (en) * 1964-11-02 1967-02-21 Schlecht Raymond Joseph Boat ladder
US3285367A (en) * 1965-02-12 1966-11-15 All Time Mfg Company Inc Emergency boat ladder
US3420558A (en) * 1966-04-15 1969-01-07 George R Whitten Jr Mounting and grounding device for swimming pool equipment
US3804200A (en) * 1973-02-05 1974-04-16 R Sandberg Bottom step unit for boat ladders
US3869742A (en) * 1974-02-28 1975-03-11 Said James Douglas Thompson To Ladder and mounting for small boats
US4365689A (en) * 1981-02-06 1982-12-28 Francis Dever Tilting marine ladder
US4396030A (en) * 1982-01-18 1983-08-02 The Oyster Tent Company Car top folding tent
US20060000405A1 (en) * 2004-07-02 2006-01-05 Spencer Jeffrey G Marine bow hand rail mount removable ladder
US20160108671A1 (en) * 2013-08-12 2016-04-21 Compagnie Generale Des Etablissements Michelin Custom mold press ladder
US9500028B2 (en) * 2013-08-12 2016-11-22 Compagnie Generale Des Etablissements Michelin Custom mold press ladder
FR3103460A1 (en) * 2019-11-21 2021-05-28 Jean Marc Seguin Device for keeping a user outside of a boat at reduced speed

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