US2073566A - Portable extension for davits - Google Patents

Portable extension for davits Download PDF

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Publication number
US2073566A
US2073566A US42324A US4232435A US2073566A US 2073566 A US2073566 A US 2073566A US 42324 A US42324 A US 42324A US 4232435 A US4232435 A US 4232435A US 2073566 A US2073566 A US 2073566A
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Prior art keywords
spar
davit
davits
extension
eye
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Expired - Lifetime
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US42324A
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George C Scheubner
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B23/00—Equipment for handling lifeboats or the like
    • B63B23/02—Davits, i.e. devices having arms for lowering boats by cables or the like
    • B63B23/18—Davits, i.e. devices having arms for lowering boats by cables or the like with arms pivoting on substantially vertical axes
    • B63B23/20—Davits with single arms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7075—Interfitted members including discrete retainer

Definitions

  • the invention relates to davits used on shipboard for handling the anchor and small boats to and from the sea, being adapted for use on power and sail boats, barges and the like, as well 5 as on docks and piers.
  • the davits that are at present in use, particularly on yachts, are ordinarily too short to keep the small boats or anchor or other object that is being handled to and from the boats far enough 10 from the side thereof to prevent striking the side of the vessel, especially in a rough sea, and therefore much damage is oftentimes occasioned.
  • the principal object of my invention is the provision of an extension for the free end of the 15 davit, that may be secured thereto and movable therewith, so as to extend a rope or chain handling the object to and from the vessel further from the side thereof to obviate the disadvantages heretofore referred to regarding the davits now in use.
  • Figure 2 is a top plan view of the extension as applied to the end fragment of the davit.
  • Figure 3 is a transverse sectional view on an enlarged scale, on a plane indicated by line 3-3 30 Of Figure 1,
  • Figure 4 is a similar View on a plane indicated by line 4-4 of Figure 1, and
  • Figure 5 is a fragmentary View showing a modified form of the grappling end of the extension.
  • the invention is shown in the drawing as applied to a davit l0 that has its mast ll pivotally 40 arranged for rotation on its axis, and in the drawing a socket member I2 is provided for this purpose to be secured to the boats deck, the construction selected for illustration being for that purpose only and not to in any wise limit the 45 application of the extension to be hereinafterdescribed, to the particular davit shown.
  • the free end of the davit I0 is provided with an eye l3 that is usually used to receive a hook on a pulley block employed in raising and lower- 50 ing boats and other objects to and from the vessel.
  • the invention contemplates the provision of an extension for the davit, comprising a spar l4, having a laterally projecting pin IE to engage in the eye I 3, said pin being intermediate of the ends of the spar l4, and having on the in-boat end of the spar a hook l6 which extends laterally in the same direction as pin l5, and engages the davit at a point remote from the eye I3.
  • a linchpin I1 is provided which engages in an opening II! in the pin l5.
  • l9 designates a chain or other flexible member secured at one of its ends, as shown at 20, to the spar l4, and at its opposite end in an eye 2
  • extension or spar will depend upon the size and proportions of the davit upon which it is to be secured, and that the spar may be made of steel or any suitable material, galvanized or otherwise made rust-proof.
  • An extension for davits comprising a spar, means intermediate of the ends of said spar to pivotally secure it to a davit terminal, a laterally directed hook on one end of said spar to engage the davit, and hoisting and lowering means on the other extremity of the spar.
  • An extension for davits comprising a spar, a laterally extending stud on said spar intermediate of its ends and adapted to engage an eye in the end of a davit, a laterally extending hook on one end of the spar engaging the davit, and a pulley mounted on the other end of the spar.
  • an extension for said davit comprising a spar, a laterally directed pin intermediate of the ends of the spar and pivotally engaging insaid eye, and a laterally directed hook on the inboard end of the spar and engaging under the davit.

Description

March 9, 1937. G. c. SCHEUBNER PORTABLE EXTENSION FOR DAVITS Filed Sept. 26. 1935' Patented Mar. 9, 1937 UNITED STATES PATENT OFFICE 3 Claims.
The invention relates to davits used on shipboard for handling the anchor and small boats to and from the sea, being adapted for use on power and sail boats, barges and the like, as well 5 as on docks and piers.
The davits that are at present in use, particularly on yachts, are ordinarily too short to keep the small boats or anchor or other object that is being handled to and from the boats far enough 10 from the side thereof to prevent striking the side of the vessel, especially in a rough sea, and therefore much damage is oftentimes occasioned.
The principal object of my invention is the provision of an extension for the free end of the 15 davit, that may be secured thereto and movable therewith, so as to extend a rope or chain handling the object to and from the vessel further from the side thereof to obviate the disadvantages heretofore referred to regarding the davits now in use.
The invention will be described in detail hereinafter and will be found illustrated in the accompanying drawing, in which Figure 1 is a view in elevation of a davit show- 25 ing the improved extension applied thereto,
Figure 2 is a top plan view of the extension as applied to the end fragment of the davit.
Figure 3 is a transverse sectional view on an enlarged scale, on a plane indicated by line 3-3 30 Of Figure 1,
Figure 4 is a similar View on a plane indicated by line 4-4 of Figure 1, and
Figure 5 is a fragmentary View showing a modified form of the grappling end of the extension.
In the drawing similar reference characters will be used to designate corresponding parts in all of the views.
The invention is shown in the drawing as applied to a davit l0 that has its mast ll pivotally 40 arranged for rotation on its axis, and in the drawing a socket member I2 is provided for this purpose to be secured to the boats deck, the construction selected for illustration being for that purpose only and not to in any wise limit the 45 application of the extension to be hereinafterdescribed, to the particular davit shown.
The free end of the davit I0 is provided with an eye l3 that is usually used to receive a hook on a pulley block employed in raising and lower- 50 ing boats and other objects to and from the vessel.
The invention contemplates the provision of an extension for the davit, comprising a spar l4, having a laterally projecting pin IE to engage in the eye I 3, said pin being intermediate of the ends of the spar l4, and having on the in-boat end of the spar a hook l6 which extends laterally in the same direction as pin l5, and engages the davit at a point remote from the eye I3. To hold the pin in the eye l3 and prevent casual displacement of the spar M from the davit, a linchpin I1 is provided which engages in an opening II! in the pin l5.
l9 designates a chain or other flexible member secured at one of its ends, as shown at 20, to the spar l4, and at its opposite end in an eye 2| in the end of the pin.
The opposite or free ends of the spar I4, as shown in Figures 1 and 2, are forked or bifurcated, as shown at 22, to receive a sheave or pulley 23 that is journaled on a pin or bolt 24. In Figure 5, however, is shown a modified construction of the free end of the spar on which is provided an eye 25 to receive a hook 26 on a pulley block 21, for use in connection with the raising and lowering tackle, the spar in Figure 5 being designated l4.
It will be apparent that the size and proportion of the extension or spar will depend upon the size and proportions of the davit upon which it is to be secured, and that the spar may be made of steel or any suitable material, galvanized or otherwise made rust-proof.
What is claimed is:
1. An extension for davits, comprising a spar, means intermediate of the ends of said spar to pivotally secure it to a davit terminal, a laterally directed hook on one end of said spar to engage the davit, and hoisting and lowering means on the other extremity of the spar.
2. An extension for davits, comprising a spar, a laterally extending stud on said spar intermediate of its ends and adapted to engage an eye in the end of a davit, a laterally extending hook on one end of the spar engaging the davit, and a pulley mounted on the other end of the spar.
3. In combination with a boat davit having an eye on its free end, an extension for said davit, comprising a spar, a laterally directed pin intermediate of the ends of the spar and pivotally engaging insaid eye, and a laterally directed hook on the inboard end of the spar and engaging under the davit.
GEORGE C. SCHE'UBNER.
US42324A 1935-09-26 1935-09-26 Portable extension for davits Expired - Lifetime US2073566A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581254A (en) * 1949-10-11 1952-01-01 American Steel Foundries Fifth wheel handle
US2600959A (en) * 1950-06-22 1952-06-17 John C Bender Hitch
US2698949A (en) * 1951-06-27 1955-01-11 Albert A Miller Boat lowering device
US2820658A (en) * 1953-12-04 1958-01-21 Emil A Bender Connecting means for structural elements
US2891262A (en) * 1951-06-27 1959-06-23 Albert A Miller Boat lowering device
US3389613A (en) * 1966-07-14 1968-06-25 Illinois Tool Works Lever and link mechanisms
US4907782A (en) * 1987-07-20 1990-03-13 Jurrien Hoekstra Tensioning stringing davit for power lines
US4961398A (en) * 1989-02-13 1990-10-09 Mountain Marine, Inc. Davit assembly

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581254A (en) * 1949-10-11 1952-01-01 American Steel Foundries Fifth wheel handle
US2600959A (en) * 1950-06-22 1952-06-17 John C Bender Hitch
US2698949A (en) * 1951-06-27 1955-01-11 Albert A Miller Boat lowering device
US2891262A (en) * 1951-06-27 1959-06-23 Albert A Miller Boat lowering device
US2820658A (en) * 1953-12-04 1958-01-21 Emil A Bender Connecting means for structural elements
US3389613A (en) * 1966-07-14 1968-06-25 Illinois Tool Works Lever and link mechanisms
US4907782A (en) * 1987-07-20 1990-03-13 Jurrien Hoekstra Tensioning stringing davit for power lines
US4961398A (en) * 1989-02-13 1990-10-09 Mountain Marine, Inc. Davit assembly

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