US1629419A

US1629419A - Boat-launching device

Info

Publication number: US1629419A
Application number: US67957A
Authority: US
Inventors: Henning L Sorensen
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-11-09
Filing date: 1925-11-09
Publication date: 1927-05-17
Anticipated expiration: 1944-05-17

Description

May 17, 1927.

v H. L. SORENSEN BQAT LAUNCHING DEVICE Filed Nov. 9. 1925 4 Sheets-She d 1 mvamon Hem $712M; 0:

ATTORNEYS '2 WITNESSEQ w j W I By f J ATTORNEYS May 17, 1927. 1,679,419

H. 1.. SORENSEN BOAT LAUNCHING DEVICE Filed Nov. 9. 1925 4 Sheets-Sheet 2 WITNESS 1N VENTOR May 17, 1927. 1,629,419

H. L..- SORENSEN BOAT LAUNCHING DEVICE Filed Nov. 9. 1925 4 Sheets-Sheet s ES 1 I INVENTOR WITNESS Hnniqylhlomzwaw v BY ATTORNEYS May .171 1921.

H. L, sbRENsEN BOAT LAUNCHING DEVICE Filed Nov 9. 1925 4 Sheets-Sheet 4 Ill') Patented May 17, 1927.

gegggg HENNING L'.'- SORENSEN; 0F .ALLENTO'WN5"PENNSYLVANIA.

BOAT- AUNCHING' w en;

'Appli cati'oii filedfiveinber 9; 1925. seriaim. 67,957.

This invention "relates to shout-launching device.

An object of-the inventionis to provide a boat lz'tuiiching device which, as soon asitheQ boat is released' will 'b'e'in apotential condition to permit-the boat to swingoutboa'rd.

A further object: concerns the provision of an apparatus Whiehis extremely simple;

requiring a n'iiniinuin operittion onthe pztrt of-a inininiuro number *o-f 111811 and whichv is out of repair.

A further object concerns the provision of simple. and eihcient' means" h'erehy when the hoat'is safely inthe Water it can be disconnected from the lowering tackle."

The invention is illustrated in the draw ings. of which I V Figure 1 is a side elevation of the boat supported on its'davits and showing] the leiiniel'xingapparatus. I

Figure Bis an end'elei ation showing the deck ot'th'e liner in'seo'tion and past of the fluid cylinder in section. This-section is taken one line 2-2o-f Figure 1; c

Figure 3 is at section somewhatsiini'lzut'to Figure 2 showing. the boat swung to snout heard position, but not yet imvered; the" loweredposition of the bout being show'n'in' dotted lines Figure; 4; is a detailed section showing a means for holdingthehoat in'positionon the daVit friine before it is lziune'hed.

Figure 5 is a partially enlarged section of the boat-on a dzi'vit frainewhile 'itis at rest thereon. r

Figure 6 is a partialelev'a'tion of o'ne of the dsvit'fra'mes. r Y

Figure 7 is a partial longitudinal section through the boat showing how he loW-eriiig tackle can he quickly released. I I Figure: 8 is a 'seetienon the line 8+8O1 Figure 'T. 1 V

L igur'e 9 is a partial p'len'viewshowing eiftreinelyduraihle end'littlelik'ely to" get the releasin g 'pin the operation of Which causes the release of the lowering t'ac'lile.

The form of the invention shown in the dre'wings'is a preferre'd f0r1n,'alth0u'gh it is understood that modifications in the eonstruction ai'id errsngeinentof the parts and in the chai's 'cter of theinziterial's used may be" adopted Without defia rting from the spirit of'the inventiona's eetio'rth in the appendedclaims.

In its general aspect the in vent'io'n is m vided to "support a boat; preferably a lifeboat on thedeck ot a lin erby means of two de'vit freine's; 'ohe loc'a'tedTne'm each end of thehoa'ti' These datit- 't'raniesai'eso pivotally supported on the deckof a liner thet as soon the sup 'portiiig plates are". released these i franies will tend to swing 1 out The boat-is held in'po'sition o'ii'thc I"i'em"'esfiierrndllfy" by means of spin ralitj "ot suitably movable supportingplates, which when actuetedQCan he moved out; of the Way to perini-tthe boat autoni etically to siyin g'free from the daVit fiai'nes zts these frames commence to tilt outboard." This tendency" of the da vit frames" to tilt out board" is check'edahd braked'byreason of thefzict thut the davit frames are provided with si'iitshle coi'ii'iectiohsy such as steel at: hles'td a iston in a cylinder filled \v'th fluid, prefefsbl? oil. The"fiow' of the oil from thecylincl-er and cons 'cj'uei i the tiltin'g oi the frame 'is controlled by one 'inan' who may helocated onthe deck 'of-the liner or preferably the boat, which is outwardly located. This cylinder is' connected tethe "controlling position by suitable 'fle: :i

hle pip'ingsiich as rtibber hose ends valve in said pipe is 'edeptetltdhe 'actuzited by the nie'mberef the ciewi'n'chaigehf lau'nch- Consequently" asFsoon as the btiat is' releQSed the datits "will" tend to swing outii ttrdly and the speed of v this tiltin'g can'he controlled by theinzinipulhtioir of thevalve. When the boat is thus swungoutboard'thelowefing of-it intothe Water can be likewise controlled loy' the inaiiipula tio n of an'othei vslve in upipe line con nectecl'to another fluid cylinder; the listen of which is eonneet'e'd' by suitable tziclde to the boat.

pivotally connected as at 31, (see Figure the boat itself. Preferably this tackle is duplex or triplex type, which will permit the travel of the boat to be several times greater than the travel of the piston.

Preferably the controlling mechanism is so arranged that as soon as the boat is properly launched this apparatus can be thrown overboard. It is also preferably disposed so that as the fluid, preferably oil, discharges from the cylinder, it will flow through the piping disposed on the boat and overboard adjacent the boat to calm the waters in the vicinity of the boat. As soon the boat is safely in the water the manipulation of the single lever will cause the automatic release of the lowering tackle front the boat.

In the preferred form of my invention, which I show in the drawings, represents the deck of a liner. Disposed beneath the deck are two

fluid cylinders

11 and 12 having

pistons

13 and 14 provided with

piston rods

15 and 16. These cylinders are preferably filled with oil. A pipe 17 leading to the top of cylinder 12 is provided with a hand pump 18, operated by the manipulation of a lever 19 which will permit additional oil to be pumped intothe cylinder 12 through pipe 20 leading to a suitable source of oil.

The piston 13 is connected by preferably flexible steel cables, one of which, 21, is shown, passing over

pulleys

22 and 23 and connected to the rear end 24 of a davit frame 25. There are two davit frames of this type for each boat, one located near each end of the boat. These davit frames have a vertically extending arm 26 and a forwardly extending portion 27, the boat 28 being supported or resting on the latter.

The boat is held on the davit frames be tween two supporting

plates

29 and 30, there being a pair of these plates at each end of The plates 30 are movable, being to a movable post 32. having a normal position shown in full line in Figure 2. This post is connected to a rod 33 adapted to be actuated by the manipulation of a hand. wheel 34 through suitable thread and sleeve connections designated by the numeral 35 in Figure 5. When this hand wheel is manipulated it will draw the posts 32 to the dotted position shown in Figure 5, which will lower the movable plate 30 to the dotted position shown in Figure 5, thus removing it from the path of the keel 36 of the boat 28, so that the boat will be free to swing off the supporting portion 27 of the davits as hereinafter to be described.

The shaft 31 extends across beneath the boat to the other davit frame and another post similar to 32 is located at the other end of the shaft and this post is connected to another movable plate 30, which is likewise moved by the 'manipulation' of the hand wheel.

Each of the davit frames are pivotally supported on a shaft 37 mounted on suit-able bearing brackets 38 and 39 (see Figure 1).

Pulleys 40 are disposed at each end of the shaft 37 to. receive flexible connections such as steel cables 41 hereinafter to be described.

The pipe 42 extends from the cylinder 11 a latch finger 44 connected to the davit arm 26 engages the side of the boat 28 to hold it on the davit more securely. -This finger may be lifted to disengage it from the boat when the boat is to be launched.

W hen it is necessary to launch the boat the passengers get into the boat and this increased weight being supported on the plates 27 of the davit frame will tend to tilt the davit frames around the shaft 37. This will put a strain on the cables 21 and the piston 13, which will compressthe fluid in the cylinder. By opening the valve 43 a man in the boat will permit the fluid to flow out at whatever speed he desires, thus permitting the davit frame to tilt. Before he opens the valve, however, he releases the finger 44 and manipulates the hand wheel 34 to move the plates 30 out of the way of the keel of the boat. As the oil flows out of the cylinder 11 the davit tilts to the position shown in Figure 3. The oil flowing from the cylinder may be allowed to flow overboard or may be permitted to flow through suitable piping to any suitable source or container not shown.

when the boatis in the position shown in Figure 3 in full lines, it is necessary to lower it into the water. This is done by opening a valve 45 (see Figure 7). This valve is connected on one side to a flexible piping 46 leading to pipe 17 previously mentioned, this pipe extending to the top of'cylinder 12. The previous manipulation of the hand pump 18 has forced an extra quantity of oil into the top of this cylinder 12, thus depressing the piston 14 further down and by reason of the connection of the block 47 and the cables 41 to the boat initially lift the body of the boat from the davit frames. hen the valve 45 is open, however, the fluid will be forced out by reason of the wei ht of the boat through the valve 45 into hose or

pipes

48 and 49 which are preferably draped over the ends of the boat in coils such as 50 and 51 (see Figure 1) from which the oil will be discharged overboard It is immaterial, however,

lll)

at the ends of the boat tending to ealm the waves.- I

The factthat the cable ll is a triplex cable between the sheave t? anchtlie multiple pulley 681 (see Figure permits the boatto drop three times far as thepistonl l moves. After the boat is in the water the valve 455 can be thrown overboard. It is also obvious that instead of allowing oil to discharge on the water it can be permitted to discharge into suitable containers on the vessel, whence it can be pumped back into the cylinder if desired, and this pumping action can be utilizedto raise the boat from the water and to restore the davit frame to its original position. Furthermore, it is obvious that the control of the tilting of the davit frame and the lowering of the boat can be effected from the deck of the steamer if desired, launched, although the latter method of control is preferable, since one man in the boat itself can very nicely regulate its movements.

After the boat is in the water a handle 51 (see Figure 1) is operated to pull on two links 52 and 58 moving them in opposite directions as shown in Figure 9. One of these links is shown as running over a pulley 54 and connecting to a pin 55, which by reason of the movement of the handle 51 will be withdrawn from a hole in a bar 56 connected to the end of a rod 57 (see Figure 7) on the end of which a weight 58 is support ed. This rod is pivoted at 59 and is connected to ahook 60. This hook engages a link 61 which is connected to the lower end of one of the cables 41. supporting the boat. The

shaft 59 and the hook 60 are mounted on bracket frames 62 fastened in the bottom of the boat and located within suitable wall casings such as 63 at each end of the boat. It is understood, of course, that there are two cables shone at each end of the boat and lying over two davit frames, these cables being connected to the same sheave 47 by engaging, as shown in Figure 1, with pulleys (54 at the top of'each davit frame, a pulley 65 intermediate the length of the davit frame and then running over the pulleys L0 in connection with each davit frame. The cables then proceed beneath the deck 10 and pass over pulleys 66 and 67 after which they pass over a multiple pulley 68 mounted beneath the deck and then are connected to the sheave 47. w

It is quite apparent from consideration of this description that the device is as simple as any mechanism of this sort can be, that it is capable of a very high degree of control and can be operated with as much speed as can be desired under theusual conditions of launching a" boat. 'One of the important points in regard to the invention is that the entire apparatus is controlled by one man and that the speed of the action is instead of the boat being regulated'hy'hini, and isentirely in responseto gravi-ty, minus the checking action ofi-th'e fluidbrakes; It isibelieveditliatthis istliefirst timethat a tiltingd-avitrofthiskind has ever been disclosed; which, merely by 7 Pt ESODP of. the weight of the'pa ssengers in the boat supported on the davit wi-ll tend to move the boat=to an outboard position.

hat I claim is: 1. A boat launching device which comprises a pivoted davit supporting a boat and adapted to tilt due to the weight of the boat,

. fluid controlled means connected to the davit the speed of lowering the boat from the davit into the water, means in the boat under the control of the operator to control the first mentioned fluid controlled means, and means loosely supported in the boat under the control of the operator for controlling the second mentioned fluid controlled means.

3. A boat launching device which comprises a davit frame pivoted to the deck of a vessel, a boat supported thereon, said davit adapted to tilt due to the weight of the boat, a fluid cylinder having a piston, connections between the piston and the davit frame, and means loosely supported in the boat under the control of an operator to regulate the discharge of fluid from the cylinder whereby the speed of tilting of the davit frame can be controlled.

4. A boat launching device which comprises a davit frame pivoted to the deck of a vessel, a boat supported thereon, said davit adapted to tilt due to the wt-iight of the boat, a fluid cylinder having a piston, connections between the piston and the davit frame, and means loosely supported in the boat under the control of an operator to regulate the discharge of fluid from the cylinder whereby the speed of tilting of the davit frame can be controlled, and a second fluid cylinder having a piston, connections between said piston and the boat, and means under the control of the operator to regulate the dischargeof the fluid from said second cylinder whereby the speed of the descent of the boatfrom the davitframe can be regulated. j

5. A boat launching device which comprises adavit frame, a boat supported thereon, a fluid cylinder having a piston, connections between the piston and the boat and lid means loosely supported in the boat under the control of an operator for regulating the discharge of fluid from its cylinder, where by the speed of descent of the boat from the davit can be controlled.

thereon, a fluid cylinder having a piston,

means connecting the piston to the boat and means whereby additional fluid can be pumped into the cylinder to move the piston a sufiicient amount whereby the boat will be slightly raised from the davit prior to be ing launched.

HENNING L. SORENSEN.