US1069905A - Launching device. - Google Patents

Launching device. Download PDF

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Publication number
US1069905A
US1069905A US70999312A US1912709993A US1069905A US 1069905 A US1069905 A US 1069905A US 70999312 A US70999312 A US 70999312A US 1912709993 A US1912709993 A US 1912709993A US 1069905 A US1069905 A US 1069905A
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Prior art keywords
boat
launching
track
cables
sliding frame
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US70999312A
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Reece L Scott
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B23/00Equipment for handling lifeboats or the like
    • B63B23/02Davits, i.e. devices having arms for lowering boats by cables or the like
    • B63B23/04Davits, i.e. devices having arms for lowering boats by cables or the like with arms pivoting on substantially horizontal axes, e.g. gravity type

Definitions

  • This invention relates to a launching apparatus to be used when launching boats from a ship.
  • the principal object of the invention is to provide a device by means of which the boats may be launched without danger of the waves dashing them back against the sides of the ship thereby breaking them.
  • Another object of the invention is to provide a device which will send the boats into the water with a good start, thus starting them away from the ship.
  • Another object of the invention is to so connect the boats with the launching device that they will at all times be held upon an even keel when descending the launching device and striking the water.
  • Another object of the invention is to so construct the device that the boats may be easily run off the launching'deck on to the launching device and safely lowered down to the side of the ship to the point where they are released to permit their entering the water.
  • Another object of the invention is to so construct the launching device that it may be swung out of the way when not in use. This device would not only be used in case of accidents where it is desired to launch a large number of boats with a greater speed and safety, but would also be used when ever it was desired to launch a boat to conduct a party from the ship to the shore or to another ship.
  • Figure 1 is a view showing the device in a position to launch a boat, a second boat being in position to be connected with the launching device when raised, and the dotted lines indicating the raised position of the launching device.
  • Fig. 2 is a front elevation showing the device in a position to launch a boat.
  • Fig. 3 is a sectional View of the launching way.
  • Fig. 4 is a sectional view through the support upon which the boats are placed while on deck.
  • this invention comprises a pair of standards 10 which are rotatably connected with the ship 11 and have their lower ends positioned in bearings 12. Arms extend from the upper ends of the stand ards 10 and are braced by means of the braces 14:.
  • a sliding frame shown in Fig. 2 is slidably mounted upon cables 15 which have their upper ends secured to the braces 14 and their lower ends connected with the brackets 16 pivotally connected with the side of the ship.
  • This sliding frame comprises the upper bar 17 and the lower bar 18 having their ends perforated so that the cables 15 may pass through the same, thus slidably mounting the frame.
  • the frame is braced by the vertical bars 19 which connect the upper and lower bars 17 and 18.
  • a pin 20 is positioned between the bars 17 and 18 intermediate the width of the sliding frame and serves a purpose which will be hereinafter brought out.
  • the launching way comprises the si bars 21 which have their upper ends connected by the crossbar 22 through which the pin 20 passes, thus pivotally connecting the launching track with the sliding frame.
  • the lower ends of the bars 21 are connected by a cross bar 23 and the side bars are braced throughout their length by the trusses 24 which pass over the struts 25.
  • Tracks 25 are secured to the inner faces of the side bars 21 so that the boat may slide down the launching track after the launching track and sliding frame have been lowered to the positions shown in Figs. 1 and 2.
  • a cable 27 is wound upon a winding drum not shown and passed over a pulley 28 with its lower end bifurcated to form the divisions 29 connected with the end portions of the upper bar of the sliding frame. By turning the drum, the cable 27 will be wound or unwound, thus raising and lowering the sliding frame.
  • a second cable 80 is also wound upon this winding drum and carried over the pulley wheels 28 and 31 and has its free end portion divided to form the divisions 82 which are connected with the lower outer ends of the side bars 21, thus supporting the launching track.
  • Oables 33 are also connected with the end portions of the launching track and carried over pulleys 3a with their inner end wound upon the same drum as that which carries the cables already described.
  • the boat 35 is mounted upon a sliding platform 36 between chocks 87 which hold it in an upright-position.
  • This sliding platform is provided with rollers 38 which fit in the tracks 39.
  • These tracks are substantially U-shape in cross section, thus preventing the platform from dropping over the side of the ship when launching the boat, since the rollers will come in contact with the upper flange of the track and prevent the platform from tilting.
  • Hooks 40 are connected with the boat 35 by means of the chains 41 and cables 42.
  • the chains 41 support the weight of the boat and the cable 4:2 prevents the boat from slipping longitudinally through the chains when sliding down the launching track.
  • the boat is held at the upper end of the launching track as indicated by the dotted lines in Fig. l by means of a cable 4-3 which is secured to the connecting bar :22 and removably connected with the stern of the boat.
  • a cable 4-3 which is secured to the connecting bar :22 and removably connected with the stern of the boat.
  • Fig. 1 From inspection of Fig. 1 it will be evident that the boat at all times hangs upon an even keel so that when it strikes the water it will ride evenly and not plunge into the water. It will also be noted that the boat is headed away from the ship and travels down the launching track with suflicient speed to cause the boat to shoot out into the water and away from the ship. Boats may be launched very rapidly and safely with this apparatus. The passengers are placed in the boats before leaving the ship and the boat is quickly and safely lowered down the side of the ship and so placed in the water that they immediately start from the ship due to the speed with which they come down the launching track.
  • a launching device comprising a launching track, means for slidably and pivotally connecting said track with a vessel, means for regulating the incline of said track, and means for slidably connecting a boat with said track whereby the boat will hang upon an even keel.
  • a launching device comprising a set of standards, vertical cables leading from said standards, a sliding frame slidably mounted upon said cable, a launching track carried by said sliding frame, means for moving said sliding frame up and down said cables, and means for slidably and removably connecting a boat with said launching track, whereby the boat by its own momentum will ride free of said track upon striking the water.
  • a launching device comprising a set of standards, cables extending from said standards, a sliding frame mounted upon said cable, means for regulating the movement of said sliding frame, alaunching track leading from said sliding frame, means for slidably connecting a boat with said track and holding the same upon an even keel, and means for regulating the angle of said track.
  • a launching device comprising a launching track, means for connecting said launching track with the side of a vessel to permit a vertical movement, a boat supporting platform mounted upon the deck of a vessel and adapted to be moved out beneath said launching track, means for slidably connecting a boat with said track and disconnecting the boat from the platform, means for raising and lowering said track, and means for preventing sliding movement of the boat carrying means while said tracks are being raised and lowered.
  • a launching device comprising a set of standards, cables leading from said standards, a sliding frame slidably mounted upon said cables, a launching track pivotally connected with said sliding frame, means for raising and lowering said sliding frame, means for supporting said track and regulating the angle thereof, and means for slidably connecting a boat with said track.
  • a launching device comprising a set of standards pivotally connected with a ship, cables leading from said standards and having their lower ends connected with pivotally mounted brackets, a sliding frame slidably mounted upon said cables, said sliding frame comprising upper and lower bars,
  • braces for holding said bars in spaced relation, a vertical pivot pin position d between said upper and lower bars, a launching track having its upper end pivotally connected with said pivot pin, a cable connected with said sliding frame for vertically adjusting the same, cables connected with the outer end portion of said track for supporting the same and regulating the angle thereof, and flexible means for slidably and removably connecting a boat with said track whereby the boat will at all times be held upon an even keel.
  • a launching device comprising a launching track having side bars, bars connecting the ends of said side bars, supporting tracks carried by said side bars, braces for said side bars to brace the same against longitudinal strain, means for slidably connecting said launching track for vertical movement upon a vessel, means for vertically adjusting said launching track, means for slidably connecting a boat with the tracks carried by said side bars, and means for preventing movement of a boat down the tracks when raising and lowering the launching track.
  • a launching device comprising a launching track, supporting tracks carried by said launching track, means for connecting said launching track with a vessel to permit a vertical movement of the launching track, cables adapted to be placed transversely about a boat, cables for limiting the longitudinal movement of said first mentioned cables after being placed about the boat, hooks for slidably and removably connecting said first mentioned cables with the tracks of said launching track, and means for preventing movement of the boat down the launching track when raising and lowering the launching track.
  • a launching device comprising an inclined launching track slidably connected with the side of a vess l and extending away from the vessel when in use, and means for carrying a boat and slidably connecting a boat with said launching track whereby the boat will be released from said track and will travel away from the vessel under its own momentum and enter the water upon an even keel.

Description

R. L. SCOTT.
LAUNGHING DEVICE.
APPLICATION FILED JULY 11,1912.
1,069,905, Patented Aug. 12, 1913.
2 sums-sum 1.
magi
fleece L. 500% COLUMBIA PLANOGRAPH co.,wAsH|N0'mN. [L c.
R. L. SCOTT.
LAUNGHING DEVICE.
APPLICATION FILED JULY 17,1912.
1,069,905,, Patented Aug. 12, 1913@ 2 SHBETS-SHEET 2.
COLUMBIA PLANOGRAPH co. WASHINGTON, o, c
REESE L. SCOTT, OF OAKLAND, CALIFORNIA.
LAUNCI-IING DEVICE.
noeaaos.
Specification of Letters Patent.
Patented Aug. 12,1913.
Application filed July 17, 1912. Serial No. 709,993.
To all whom it may concern:
Be it known that T, Burton L. SCOTT, citizen of the United States residing at Oakland, in the county of Alameda and State of California have invented certain new and useful Improvements in Launching Devices, of which the following is a specification.
This invention relates to a launching apparatus to be used when launching boats from a ship.
The principal object of the invention is to provide a device by means of which the boats may be launched without danger of the waves dashing them back against the sides of the ship thereby breaking them.
Another object of the invention is to provide a device which will send the boats into the water with a good start, thus starting them away from the ship.
Another object of the invention is to so connect the boats with the launching device that they will at all times be held upon an even keel when descending the launching device and striking the water.
Another object of the invention is to so construct the device that the boats may be easily run off the launching'deck on to the launching device and safely lowered down to the side of the ship to the point where they are released to permit their entering the water.
Another object of the invention is to so construct the launching device that it may be swung out of the way when not in use. This device would not only be used in case of accidents where it is desired to launch a large number of boats with a greater speed and safety, but would also be used when ever it was desired to launch a boat to conduct a party from the ship to the shore or to another ship.
In the accompanying drawings: Figure 1 is a view showing the device in a position to launch a boat, a second boat being in position to be connected with the launching device when raised, and the dotted lines indicating the raised position of the launching device. Fig. 2 is a front elevation showing the device in a position to launch a boat. Fig. 3 is a sectional View of the launching way. Fig. 4 is a sectional view through the support upon which the boats are placed while on deck.
Referring to the accompanying drawings, it will be seen that this invention comprises a pair of standards 10 which are rotatably connected with the ship 11 and have their lower ends positioned in bearings 12. Arms extend from the upper ends of the stand ards 10 and are braced by means of the braces 14:.
A sliding frame shown in Fig. 2 is slidably mounted upon cables 15 which have their upper ends secured to the braces 14 and their lower ends connected with the brackets 16 pivotally connected with the side of the ship. This sliding frame comprises the upper bar 17 and the lower bar 18 having their ends perforated so that the cables 15 may pass through the same, thus slidably mounting the frame. The frame is braced by the vertical bars 19 which connect the upper and lower bars 17 and 18. A pin 20 is positioned between the bars 17 and 18 intermediate the width of the sliding frame and serves a purpose which will be hereinafter brought out.
The launching way comprises the si bars 21 which have their upper ends connected by the crossbar 22 through which the pin 20 passes, thus pivotally connecting the launching track with the sliding frame. The lower ends of the bars 21 are connected by a cross bar 23 and the side bars are braced throughout their length by the trusses 24 which pass over the struts 25. Tracks 25 are secured to the inner faces of the side bars 21 so that the boat may slide down the launching track after the launching track and sliding frame have been lowered to the positions shown in Figs. 1 and 2.
A cable 27 is wound upon a winding drum not shown and passed over a pulley 28 with its lower end bifurcated to form the divisions 29 connected with the end portions of the upper bar of the sliding frame. By turning the drum, the cable 27 will be wound or unwound, thus raising and lowering the sliding frame. A second cable 80 is also wound upon this winding drum and carried over the pulley wheels 28 and 31 and has its free end portion divided to form the divisions 82 which are connected with the lower outer ends of the side bars 21, thus supporting the launching track. Oables 33 are also connected with the end portions of the launching track and carried over pulleys 3a with their inner end wound upon the same drum as that which carries the cables already described. It will thus be seen that when the cables are unwound that they will be unwound a similar amount thereby causing all of the cables to be let out the same amount and permitting the sliding frame and launching trackto be lowered without the incline of the track being changed.
The boat 35 is mounted upon a sliding platform 36 between chocks 87 which hold it in an upright-position. This sliding platform is provided with rollers 38 which fit in the tracks 39. These tracks are substantially U-shape in cross section, thus preventing the platform from dropping over the side of the ship when launching the boat, since the rollers will come in contact with the upper flange of the track and prevent the platform from tilting. Hooks 40 are connected with the boat 35 by means of the chains 41 and cables 42. The chains 41 support the weight of the boat and the cable 4:2 prevents the boat from slipping longitudinally through the chains when sliding down the launching track.
When in operation a boat is placed upon the sliding platform and is then filled with people, it being understood that the launch ing track has been previously swung to the position indicated by dotted lines of Fig. l. The sliding platform is then moved outwardly so that it extends over the side of the ship and beneath the side bars 21. The hooks are then connected with the tracks 25 carried by the side bars 21 and the launching track raised a suflicient amount to swing the boat clear of the sliding platform which is then drawn back upon the ship and a second boat placed upon the platform and filled with people. After the boat is free of the platform the winding drum is rotated to release the cables and the sliding frame and launching track will be lowered from the position indicated by dotted lines in Fig. 1 to that shown in the full lines shown in Figs. 1 and 2. The boat is held at the upper end of the launching track as indicated by the dotted lines in Fig. l by means of a cable 4-3 which is secured to the connecting bar :22 and removably connected with the stern of the boat. As soon as the launching track is lowered to such an extent that its outer edges are submerged in the water a suflicient distance the occupant of the rear seat of the boat releases the boat from the cable 13 and the boat will then travel down the track 26 until it strikes the water.
From inspection of Fig. 1 it will be evident that the boat at all times hangs upon an even keel so that when it strikes the water it will ride evenly and not plunge into the water. It will also be noted that the boat is headed away from the ship and travels down the launching track with suflicient speed to cause the boat to shoot out into the water and away from the ship. Boats may be launched very rapidly and safely with this apparatus. The passengers are placed in the boats before leaving the ship and the boat is quickly and safely lowered down the side of the ship and so placed in the water that they immediately start from the ship due to the speed with which they come down the launching track.
Having thus described the invention what is claimed as new, is r 1. A launching device comprising a launching track, means for slidably and pivotally connecting said track with a vessel, means for regulating the incline of said track, and means for slidably connecting a boat with said track whereby the boat will hang upon an even keel.
2. A launching device comprising a set of standards, vertical cables leading from said standards, a sliding frame slidably mounted upon said cable, a launching track carried by said sliding frame, means for moving said sliding frame up and down said cables, and means for slidably and removably connecting a boat with said launching track, whereby the boat by its own momentum will ride free of said track upon striking the water.
3. A launching device comprising a set of standards, cables extending from said standards, a sliding frame mounted upon said cable, means for regulating the movement of said sliding frame, alaunching track leading from said sliding frame, means for slidably connecting a boat with said track and holding the same upon an even keel, and means for regulating the angle of said track.
1. A launching device comprising a launching track, means for connecting said launching track with the side of a vessel to permit a vertical movement, a boat supporting platform mounted upon the deck of a vessel and adapted to be moved out beneath said launching track, means for slidably connecting a boat with said track and disconnecting the boat from the platform, means for raising and lowering said track, and means for preventing sliding movement of the boat carrying means while said tracks are being raised and lowered.
5. A launching device comprising a set of standards, cables leading from said standards, a sliding frame slidably mounted upon said cables, a launching track pivotally connected with said sliding frame, means for raising and lowering said sliding frame, means for supporting said track and regulating the angle thereof, and means for slidably connecting a boat with said track.
6. A launching device comprising a set of standards pivotally connected with a ship, cables leading from said standards and having their lower ends connected with pivotally mounted brackets, a sliding frame slidably mounted upon said cables, said sliding frame comprising upper and lower bars,
braces for holding said bars in spaced relation, a vertical pivot pin position d between said upper and lower bars, a launching track having its upper end pivotally connected with said pivot pin, a cable connected with said sliding frame for vertically adjusting the same, cables connected with the outer end portion of said track for supporting the same and regulating the angle thereof, and flexible means for slidably and removably connecting a boat with said track whereby the boat will at all times be held upon an even keel.
7. A launching device comprising a launching track having side bars, bars connecting the ends of said side bars, supporting tracks carried by said side bars, braces for said side bars to brace the same against longitudinal strain, means for slidably connecting said launching track for vertical movement upon a vessel, means for vertically adjusting said launching track, means for slidably connecting a boat with the tracks carried by said side bars, and means for preventing movement of a boat down the tracks when raising and lowering the launching track.
8. A launching device comprising a launching track, supporting tracks carried by said launching track, means for connecting said launching track with a vessel to permit a vertical movement of the launching track, cables adapted to be placed transversely about a boat, cables for limiting the longitudinal movement of said first mentioned cables after being placed about the boat, hooks for slidably and removably connecting said first mentioned cables with the tracks of said launching track, and means for preventing movement of the boat down the launching track when raising and lowering the launching track.
9. A launching device comprising an inclined launching track slidably connected with the side of a vess l and extending away from the vessel when in use, and means for carrying a boat and slidably connecting a boat with said launching track whereby the boat will be released from said track and will travel away from the vessel under its own momentum and enter the water upon an even keel.
In testimony whereof I affix my signature in presence of two witnesses.
REEGE L. SCOTT.
WVitnesses:
FRANK H. CARTER, F. P. SoHRoEDnR.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.
US70999312A 1912-07-17 1912-07-17 Launching device. Expired - Lifetime US1069905A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660677A (en) * 1986-07-28 1987-04-28 Conoco Inc. Personnel evacuation apparatus for an offshore platform
US4964358A (en) * 1989-03-22 1990-10-23 Sandrow Martin S Small boat hoisting apparatus and method
US20090158991A1 (en) * 2007-12-20 2009-06-25 Gva Consultants Ab Device, System, Structure, Method, Computer Program Product and Control System

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660677A (en) * 1986-07-28 1987-04-28 Conoco Inc. Personnel evacuation apparatus for an offshore platform
US4964358A (en) * 1989-03-22 1990-10-23 Sandrow Martin S Small boat hoisting apparatus and method
US20090158991A1 (en) * 2007-12-20 2009-06-25 Gva Consultants Ab Device, System, Structure, Method, Computer Program Product and Control System
US8156886B2 (en) * 2007-12-20 2012-04-17 Gva Consultants Ab Device, system, structure, method, computer program product and control system

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