US960224A - Pontoon-crane. - Google Patents

Description

` G. H. HULBTT.

PONTOON CRANE. APPLIGATIOH IILEJ AUG. 28, 1908.

,Patented May 31, 1910.

3 SHEETS-SHEET 1.

MESQSM Allume] G. H. HULETT.

PONTOON CRANE.

APPLIOATION FILED AUG. 28, 1908.

60,224; Patented May s1, 1910. s axxus-SHEET z Q fw j f v d Allorfzey G. HULETT. PoNTooN CRANE. APLIGATIOF'IILED AUG. 28, 1208.

Patented May 31, 1910.

8 BHEETB-BHBBT 3.

I+ JNVENTOR l EAHarney.

tainnew and useful i' Y' PATENT? ormoni l @genza-5 Be it known that L-.Gnoncn HENRY HU- Aof Cleveland, in the county of Cuya# "hogaand State of Ohio, .have invented cer- Improveinents in Pontoon-. Cranes; and I do Ahereby"declare the follovving'to beya full, clear, and exact de'- -g -sc riptionjof theinvention, such asvill cli- ,A .ablepthers'sklled in the art to which 1t appertain'stonntkeand use 'the' same. My pinvention relatesto an improvement in pontoon craiif..s,' tlic:object-y being to so lo: catetlie crane'witli relation to the pontoon, i'is ,t .pl )tain the highest possible stability-of thefpontoon.' Afurtlier object is to'provide-automatic-A ally A controlled the-iveight-offtlieload carriedfby the booin.

` :ith theseobjects'in view my invention consistsiina crane ino'iintedj to turn anda counterbalance movable in a'plaiieb'eloiv the ,siirfaceof tliewater of flotation.

..invention'-fui'tlier consists vin a p o'ntbi'i,"a' cranecarried thereby, the hase of the cranefbeing in -a plane below thev deck of the pontoon, a f ycounterweight lmovable' Within the. pontoon and automatic 'devices'actuated indirectly by the weight 'of the load forcontrolling the movements of' `the counteryginventionfurther .consists in the parts and combination of parts as will be more l fully --.dcscribcdand pointed out in the claims..- r i; In theaccoinpanying drawings, Figure 1 is a view -inside elevation of a vpontoon crane in plan o he same, and Fig. 3 'is a diagram of the'; counterwei'ght andinanual and auto-' matic devicesfor actuating the same.

. 1. represents a po'ntoo'ny'and 2 the crane,`

the latter comprising a base?) V'and a boom 4. L The pontoon 1 is rectan lar'in shape, and' is provided init' deck etween its transy 5' 9i' -nearer one end' verse center. and .one en .than the other, n rithanA opening lcircular" .in formfthrough 'which -t ofthe base'f3.o'f .the crane v2 protrudes. .Thisreferably base is 'circular as shown-in Fig. 2 and is.

- ron'roorr-canina.A f-

l' Speicationprmetters Patent. Patented May f 'Aplincan mea August 2s, isos. seriai No. 450,765.1 v

- bas-e Sand as before cirplainedprojects up#A projects, and a, suitable eneine,

means for countei'balancing which thc trolley embodyintg my invention. Eig. -2 is a'view wonen-minar niinnrr, jorcLi-ivEI,AND, onIo, AssreNor. To THE wEnLMAN-SEAVER- I MORGAN corirANY, or CLEVELAND, omo.. v

Wardly through the opening vin the'deck of the pontoon, ,and is then expanded or en- 4 larged as shown 'in Fig.

nient of.` the booiii'or j'ib 4.

The opening' in the deck of is provided with, an upwardl flange 8 through which the neck the I pontoon, projecting and gearing are provided wherebytlie. ase boom'or jib may be rotated so as to carry the free 'end of the hoorn carrying the hoist chain over either side or end ofthe pontoon.

" 'The crane 2 may be of any approvedforin but the purposes pass andis also pro-. vided on its under side els. This boom is pivoted at. 16 to the base 3 and isprovided with the nuts 17 which are engaged by screws 1S neck of the bas.; 3. These screws are geared torotate i'n unison, and when rotated, o 80 crate to raise orlower the Aouter end of't e boom.'

Located oir-'the baseii. Within the pontoon.

1 a pair-ofho'isting en ines. jThese ens gines arelocated 'on the thereof removed from thcfoveihanging boom so as to act as c oiiiiterweiglit forI the latter.

Frpm the drums 18 of these engines, cables 14 are led over suitable sheaves on the boom,

and Aaround sheaves 13 at the free end of tlie 90 boomand down .and around sheaves in the lhoist blockll and then up to the boom to which the free ends are Aattached in the usual n'ianner.

' The boilers 20 are located .within the 95" I pontoon at the rear end thereof a osition to 'counterbalance the weight o the crane. j The rotating base also carries the actuating the auxiliary 'trolley 15, which as before ex'ilained is 10ov ,mounted e neckv 3L engine and drum for to travel on the tracks 14 on the boom 7, and is employed-fortransfer'ring lighter articles. i'

Thei pontoon is provided tra'iiisve'rsel); its" "ig, I length' at itsirear end with the' trackw ay 2 2 l05 -on Which-the counterwei'ght'23 travels. "-Q

For the purpose` of pro ellin 'the couln'jsf ht 23 and'for control ing te movements.

vWei' of gie 'saine the devices now tobe-desc1"ibed'l' will :be employed An electric of the crane carrying the ofillustra tion l have shown it in' skeleton form, and is provided at its I 'extreme outer end with sheaves 13 over Vwhich thelioist chains 14 with tracks 14 'oni I or auxiliary hoist 15 trav'- 15 pivoted at 20 to `tlie r ase on the end 85v motor 24 110 befmounted directly "u on counterweight:

and operate in' any o the well own ways to 'propel theacounterwei ht or' steadjof mounting the motor upon t e counterweight; it may be located on the base 3 and' connected in any. suitable manner with said counter- -wei ht for pijo elling the latter. A` magnetv'ica y o erate controller 26 for the motor maybe -coated jupon .the counterweight and Aconnected-by conductors 27-28 and trolley wheels with the leads 29-30 froinany convemfent source of electrical energy. A man-- ually operated controller 31.is rovided, and

` comprises a suitable support 'rtwo pairs .of contact 'strips 32- 33 andf31-35, and a ".lever 36 having 'arcontact plate 37 for con- ;necting the contact strips of the respective pairs of strips: Conductors 38-39 are connected with the contact strips -33 and 35 and these conductors are'connected with trolleywires L10-41. Trolley. wheels 4t2-.43'A are adapted to-travel in contactwith said'wi'res and these trolley wheelsare connected by conductors 441-45 withv the terminals .of a

reversing Switch-46, the'l other terminals of 'said s witchbeing connected with ,the controller 26. The switch 46 may b e geared to' the moving mechanism'r it may be o erated byvcams or other devices at each en of the trackwa 22 6x1 which the counterwei ht 234V runs. y he switch 46' thus acts as a, limit switch and also foilrevers" the motor, The contactstrips 32-320 'the switch 31 -are electrically connected-together, andthe strip 34 is connected, byja conductor 47 with the contact -block 48 ofa double throw a conductor 'with'the lead 33.

switch, the' lever 49 'of which is'connected 'by A pendulum 5.1.is mounted in any-convenf rient' position' on the apparatus, and carries at its free end, 4Contact plates 52-5 3,dis5 y posed between pairs 54-55- and 56-57 of contact iinger`s. The 'fingers 55-'57- are electrically connected together 'and electrically connected withithe contact block 58 of the double throw switch, The contact linger ductor4 38, and the contact linger Y56 is connected yby-a'wire 60, with the condutor39.

It it apparent that whenthe switch lever 4:9 is closedon the contact block 58, the tilting of the pontoon will cause the' pendulum i' switch 46 and motor 2.4, will thus 51 to swing. and connect one .or the ,other pair of contact fin ers. The circuit which includes the control er 26, reversin or limit and the motor caused to loperatev 'to' propel the counterweight 23 from one end of the' 'motor circuit, so that the motor will operate closed,

to run thel amici-,mei ht'back' to' the-'other endl of,- its trackway 'w' en the pontoon z suiiic'ently inthe opposite direction to cause the-,pendulum to coperate with .the other pair-ofcontact lingersl and thus again close the circuit.

When :a load .is taken. upon' the boomand'Y 'the latter' turned, itwill cause al certain and predetermined amount of movement. o'f the' l pontoon :in `the direction of' the loa'd'. The' fpendulum,swinging in the same direction,

would [record this movement and afterthe' A Apdetermined amount 'of movement 'has' i1 reached., the -pendulumwill close the circuit'l as before explainedand thus cause terweight^23 toward the'ppposite sideofthe ontoon, vthu's balarming the pontoon vand oadedbooi'n. IWhen' the load i'sgradually released from/the end of the boom, the pon- @5' A tooii will rise at'the-side Afrom .which boom projects and lower' on the -o posite 1 side and when l,it-'has passed the horizontal osition a predetermined extent, the pendum will' ave swung from one'pairofpcontact fingers (thus'opening the` circuit) and' then connect the other pair of contact fingers to again close the-circuit. 'The motor ,conl 'nections having been changed by. the opera- "tion of the reversing switch '46, th motor' will now. operate to move the count'eiweightf l backto its-original position where; itis depontoon-when'there is s signed to balance the -no loadmitthe boom.

improvements themovements, of Ithe counfl terweight. 23 for balancin .the pontoon when the crane is loaded an whenfunloaded, 'is' Velectrically controlld,and that lsiich control's automaticgf Should-it be vdesired toV control the elecvrtiical devices for moving the 'c unterwei'ght 23,- this'can be' accomplished with the use-of' the manually operated switch 31. 'When the switch 31 is employed, the lever 49 of the double-'pole switch, wil1 be thrown to iio Amake contact with the contact' block 4:8,vl

'thus 'closing the circuit to thejswitch 31 and -openng that .portion ofgthe circuit :which includes the 'contact fingers 54 --57.

4 vOne of the most impcrtantfeatures of my improvement'is that of couiiterweighting the crane. As shownA and vdescribed the base 3 ofthe crane o p osite or in rea'r ofthe lboom is countei'weig ted by the engines, drums and other parts, and this weight together with' the movablel counterweight is 'sufficient to-counterbalance the boom. Byv

supportin the base ofi-thev derrick -oii' the' bottom o the'pontoon, and mounting the engines and cunterweighton the basebalow the water line, the centerv of gravity of the entire craneis ke t at the lowest possible point, and the. ighestistability obtained.- .1 f

80 the operationlof the motor to' move' the counf.' I make no claim broadly in this application to'a movable c'ounterweight on 'the pon- :and electrically ,controlled means for vmoving said-eounterweig'ht, as this feature forms 4the subjectmatter of my pending applicationnaaaoaec filed August 28th,'

.j ltiis evident that -changes in the construc- 1 tion and relative arrangements of the several -partsv'inight befmade without avoiding my invention and hence Il would' have it stood that I do not restrict myself to the particularv construction and arrangement of parts shown anddescribed, but;

.Havixigfully deseribedmy invention what I claim as new and desire to secure by Let- 1. In a floating crane, the combination:

with a. pontoon,' 'of a crane base within the pontoon, a eonnterweight, the latter bemg v1n a plane'below'thewater line of thepontoon', a,boompivoted to the base, and means x35. Y v

therein elow the deck, of a crane mounted.

for'raising and lowering the boom.

Ina. iioating-A crane, fthe combination with -aontoon having a circular trackway a to rotate on said traclrway -and a movable counterweightlocated on the pontoon vin al 'plane below the water line of the latter.

` 3. Ina fioating crane, 4the combination with 'a ontoon 'having a circulartrackway therein` elow 'the deck',.of a 'crane the base p fwhieh is mounted torotate on said track- -way, an'd a counterweight located below' the deck and mounted to move transversely of.

' thepontoon in rear of the crane.

4. In' a fioating crane, Athe combination with a pontoon having a circular trackwa of a -crane mounted to .rotate on said trac way, and a counterweight mounted on a under# said base, a trackway transversel 'pontoon and 'amovable 'weight a apted to' traclrlocated transversely of the pontoon,

and ina plane below the water line.

a. In a floating crane, the combina-tion. with a pontoon having a-circular traekway, of a crane -base mounted to turn on said trackway, a movable counterweight and means automatically operated by the tipping pontoon for controlling the move'- travel en said transverse trackway.

7.' In a iioating crane; the combinationwith a pontoonhaving a circular trackw'ay below its deck, of a crane base mounted on the trackway, a boom pivoted to said base, means for raising and lowering the boom, and a movable counterweight adapted to 'travel transversely the pontoon and .on a

trackway located ma place below the water line.

8. Ina floatingl crane, the combination `with a pontoon having a circular trackway therein below the deck, o f 4a crane base mountedto turn onsaid trackway, a boom pivot/ad to saidbase at a point above the on the the boom.

deck, land a counterweight mounted to travel pontoon below the pivotal point of In testimony whereof, I have signed this.A

specification 1n the presence oftwo'subsoribingwitnesses.

GEORGE HENRY HULETT.

Witnesses:

HERBERT P. GLIDDEN,

H.v A. PEnoUBET.

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