US2478217A - Arresting gear for seaplanes - Google Patents

Arresting gear for seaplanes Download PDF

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Publication number
US2478217A
US2478217A US632092A US63209245A US2478217A US 2478217 A US2478217 A US 2478217A US 632092 A US632092 A US 632092A US 63209245 A US63209245 A US 63209245A US 2478217 A US2478217 A US 2478217A
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line
buoy
drag
seaplanes
arresting gear
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US632092A
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Frank J Walters
Homer B Nelson
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F1/00—Ground or aircraft-carrier-deck installations
    • B64F1/02—Arresting gear; Liquid barriers
    • B64F1/029—Arresting gear; Liquid barriers using a cable or tether
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F1/00—Ground or aircraft-carrier-deck installations
    • B64F1/02—Arresting gear; Liquid barriers
    • B64F1/0299—Arresting gear; Liquid barriers characterized by the use of multiple devices

Definitions

  • This invention pertains to an arresting gear especially adapted to check the forward speed of a seaplane on approaching a beach preparatory to docking.
  • An object of this invention is to provide a system of buoys so arranged as to maintain a line or plurality of lines in taut condition so that a seaplane approaching the beach for docking can drop a hook to engage a line and have its forward motion retarded and checked.
  • Figure 1 is a plan view of a preferred arrangement.
  • Figure 2 is an elevation showing the arrangement of buoys on a single line.
  • Figure 3 is a section of a concrete anchor block and swivel sheave connection.
  • Figure 1 shows a system of drag lines or cables I, 2, 3, and 4' secured to slip ring 5 and radiating outwardly therefrom to form any desired configuration.
  • the lines form a cross.
  • the seaplane may drag a suitable hook from its tail or the hook may be attached to a line shot from the plane by a line throwing gun.
  • each of the lines is attached to ring 6 and is maintained a predetermined distance below the surface of the water by means of an anchor and system of buoys. Adequate tension is exerted to maintain the line in taut condition at all times, and at a suflicient distance below the surface of the water to clear the hull of an approaching seaplane.
  • each drag line consists of buoys I and 8 secured to ring 6 by means of lines 9 and I0 respectively. It will be noted that line ID extends under sheave ll secured to anchor block l2, so that movement of the two buoys relative to each other can take place.
  • Buoys l and 8 may be of any conventional design. As shown, buoy 'l is provided with peripheral pneumatic tubes l3 and M to obtain increased buoyancy. Buoy 1 acts as a drag buoy to support the load of the main drag line and should possess sufficient buoyancy to support the line at a predetermined depth below the surface of the water. Buoy 8, because of static inertia, buoyancy, and fluid friction acts as a retarding buoy and exerts a tensioning force on line It). Due to buoyancy requirements, buoy I should be of larger diameter than buoy 8.
  • Anchor block l2 preferably of concrete, supports sheave I I as shown in Figure 3.
  • Tube or pipe [3 is embedded in block I2 and is supported in position by plates M and I5 reinforced by gussets l6.
  • Sheave support I! is provided with shoulder 2i resting on sleeve l3 and trunnion bearing l8 pivoted in tube l3.
  • the assembly is secured by means of bolt 19 and nuts 20. It will be apparent that the mounting is such as to form a swivel for sheave ll, so that rotation of the sheave about bolt l9 can take place.
  • a plurality of drag lines connected at one end and a support for the free end of each line comprising a drag buoy and retarding buoy, an anchor unit, a fitting on said anchor unit, and a line connecting said drag buoy and retarding buoy and extending through said fitting.
  • an arresting gear for seaplane a plurality of drag lines connected at one end and a support for the free end of each line comprising a drag buoy for supporting said free end at a predetermined level, an anchor unit, a swivel mounted sheave on said anchor unit, and a line extending from said first mentioned line under said sheave and connected to a retardin buoy whereby said drag line is tensioned.

Description

ugo 9, 1949. F. J. WALTERS ET AL 2,473,217
ARRESTING GEAR FOR SEA PLANES Filed Nov. 30, 1945 lnvenfors I FRANK J. WALTERS HOMER B. NELSON By l A Nor/1 ey talented Aug. 9, 1.949
ARRESTING GEAR FOR SEAPLANES Frank J. Walters and Homer B. Nelson, United States Navy Application November 30, 1945, Serial No. 632,092
(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) 2 Claims.
This invention pertains to an arresting gear especially adapted to check the forward speed of a seaplane on approaching a beach preparatory to docking.
An object of this invention is to provide a system of buoys so arranged as to maintain a line or plurality of lines in taut condition so that a seaplane approaching the beach for docking can drop a hook to engage a line and have its forward motion retarded and checked.
Details of the invention are described in connection with the followin drawings in which:
Figure 1 is a plan view of a preferred arrangement.
Figure 2 is an elevation showing the arrangement of buoys on a single line.
Figure 3 is a section of a concrete anchor block and swivel sheave connection.
In the drawings, Figure 1 shows a system of drag lines or cables I, 2, 3, and 4' secured to slip ring 5 and radiating outwardly therefrom to form any desired configuration. In the arrangement shown the lines form a cross. However, the arrangement forms no part of the present invention. One or several lines may be used and each should be of sufficient length so that it can be conveniently engaged by a seaplane approaching the beach for docking. The seaplane may drag a suitable hook from its tail or the hook may be attached to a line shot from the plane by a line throwing gun.
The outer end of each of the lines is attached to ring 6 and is maintained a predetermined distance below the surface of the water by means of an anchor and system of buoys. Adequate tension is exerted to maintain the line in taut condition at all times, and at a suflicient distance below the surface of the water to clear the hull of an approaching seaplane.
The system of buoys at the outer end of each drag line consists of buoys I and 8 secured to ring 6 by means of lines 9 and I0 respectively. It will be noted that line ID extends under sheave ll secured to anchor block l2, so that movement of the two buoys relative to each other can take place.
Buoys l and 8 may be of any conventional design. As shown, buoy 'l is provided with peripheral pneumatic tubes l3 and M to obtain increased buoyancy. Buoy 1 acts as a drag buoy to support the load of the main drag line and should possess sufficient buoyancy to support the line at a predetermined depth below the surface of the water. Buoy 8, because of static inertia, buoyancy, and fluid friction acts as a retarding buoy and exerts a tensioning force on line It). Due to buoyancy requirements, buoy I should be of larger diameter than buoy 8.
Anchor block l2, preferably of concrete, supports sheave I I as shown in Figure 3. Tube or pipe [3 is embedded in block I2 and is supported in position by plates M and I5 reinforced by gussets l6. Sheave support I! is provided with shoulder 2i resting on sleeve l3 and trunnion bearing l8 pivoted in tube l3. The assembly is secured by means of bolt 19 and nuts 20. It will be apparent that the mounting is such as to form a swivel for sheave ll, so that rotation of the sheave about bolt l9 can take place.
The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.
Having described our invention, we claim:
1. In an arresting gear for seaplanes a plurality of drag lines connected at one end and a support for the free end of each line comprising a drag buoy and retarding buoy, an anchor unit, a fitting on said anchor unit, and a line connecting said drag buoy and retarding buoy and extending through said fitting.
2. In an arresting gear for seaplanes a plurality of drag lines connected at one end and a support for the free end of each line comprising a drag buoy for supporting said free end at a predetermined level, an anchor unit, a swivel mounted sheave on said anchor unit, and a line extending from said first mentioned line under said sheave and connected to a retardin buoy whereby said drag line is tensioned.
FRANK J. WALTERS. HOMER B. NELSON.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,772,861 Ellingson Aug. 12, 1930 2,411,382 Martin Nov. 19, 1946 FOREIGN PATENTS Number Country Date 184,424 Great Britain Aug. 1'7, 1922
US632092A 1945-11-30 1945-11-30 Arresting gear for seaplanes Expired - Lifetime US2478217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US632092A US2478217A (en) 1945-11-30 1945-11-30 Arresting gear for seaplanes

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US632092A US2478217A (en) 1945-11-30 1945-11-30 Arresting gear for seaplanes

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US2478217A true US2478217A (en) 1949-08-09

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743697A (en) * 1950-05-17 1956-05-01 Cooper Henry Gibbons Apparatus for beaching seaplanes
US2983242A (en) * 1961-05-09 Explosive forming in liquid
US3007430A (en) * 1959-10-14 1961-11-07 Innoventions Inc Buoy driven pump
US3430597A (en) * 1966-05-06 1969-03-04 Shell Oil Co One-point mooring system for loading or unloading fluids into or from a ship
US3865064A (en) * 1972-06-12 1975-02-11 Ihc Holland Nv Arrangement for anchoring a floating body
US4280436A (en) * 1978-03-06 1981-07-28 Robert Jackson Boat hull anti-fouling shroud
WO1995011158A1 (en) * 1993-10-18 1995-04-27 Roger Wayne Richard Dyhrberg Mooring means

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB184424A (en) * 1922-02-13 1922-08-17 Johan Store Improved mooring device
US1772861A (en) * 1929-09-30 1930-08-12 Ellingson Elling Marking and salvaging device for sunken ships
US2411382A (en) * 1943-12-02 1946-11-19 Glenn L Martin Co Docking flying boats

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB184424A (en) * 1922-02-13 1922-08-17 Johan Store Improved mooring device
US1772861A (en) * 1929-09-30 1930-08-12 Ellingson Elling Marking and salvaging device for sunken ships
US2411382A (en) * 1943-12-02 1946-11-19 Glenn L Martin Co Docking flying boats

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983242A (en) * 1961-05-09 Explosive forming in liquid
US2743697A (en) * 1950-05-17 1956-05-01 Cooper Henry Gibbons Apparatus for beaching seaplanes
US3007430A (en) * 1959-10-14 1961-11-07 Innoventions Inc Buoy driven pump
US3430597A (en) * 1966-05-06 1969-03-04 Shell Oil Co One-point mooring system for loading or unloading fluids into or from a ship
US3865064A (en) * 1972-06-12 1975-02-11 Ihc Holland Nv Arrangement for anchoring a floating body
US4280436A (en) * 1978-03-06 1981-07-28 Robert Jackson Boat hull anti-fouling shroud
WO1995011158A1 (en) * 1993-10-18 1995-04-27 Roger Wayne Richard Dyhrberg Mooring means
US5716249A (en) * 1993-10-18 1998-02-10 Advanced Mooring Technology, Pty Ltd. Mooring means

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