US2490610A - Stowage lift - Google Patents

Description

Dec., 6, 1949 N. P. E. ANDERSEN sTowAGE LIFT 5 Sheets-Sheet l Filed Sept. 19, 1946 l INVENTOR.a

Maa/1f Dec. 6, 1949 N. P. E. ANDERSEN STOWAGE LIFTV 3 Sheets-Sheet 2 Filed Sept. 19, 1946 INVENTOR. ma@ Zat WL @W Dec, 6, w49

N. P. E. ANDERSEN STOWAGE LIFT 3 Sheets-Sheet 3 Filed Sept. 19, 1946 R.v n/ ma d/ mu mw Patented Dec. 6, 1.949

Urn-rsa STATES PATENT OFFICE STQWAGELIFT Nils Peter Erik Andersen,.Elm Grove, Wis.a's

signor to Harni'schfeger Corporation, Milwaukee, Wis., a. corporation-of Wisconsin Application'september 19, 1946y Serial No.. 697,973

This invention relates to stevedoring tackle intended for use between decks of a ship as an aid in stcwing and breaking. out package cargo, and it resides more. specifically in a novel form of the same including. a base-guided, self-elevating high-lift hook joined by hoisting lines with aV portable trolley adapted to engage the lower anges of overhead deck beams to provide an overhead anchorage from. which hoistingv force may be applied to the hook at any point throughout the hold.

In handling cargo between decks. heavy packages are usually moved to and from the hatches and stowed positions by skidding them on the deck. Every effort is made to avoid the necessity of raising such heavy packages for stowagev in upper courses of cargo because of the difficulty of locating skids upon which such` packages may be warped to the levelv desired. As a result, cargo space is often leftunused unless suicient light packages suitable for stowage on upper levels are available. No apparatus suiiciently portable and universalin its function to permit a heavy lift to be made at any point desired throughout the hold has heretofore been available. Through the instant invention. however.,v means are provided by which a heavy lift carried `close tothe maximum height -of the hold", can be made at any point throughout the hold by comparatively simple and easily performed rigging operations.

This invention is herein Idescribed by reference to the accompanying vdrawings forming a part hereof and in which there is set forth by' way of illustration and not of limitation one Vform in which the apparatus of this invention may be v embodied.

In the drawings:

Fig. 1 is a side view in elevation of one form of the apparatus -of Vthis invention shown in position within a fragment of a ships hold, the latter being shown in section;

Fig. 2 is a front View in elevation of the apparatus shown in Fig. l;

Fig. 3 is an enlarged detail View `in transverse section of the apparatus shown in Fig. l viewed through the plane 3-3 there indicated;

Fig. 4 is an enlarged detail fragmentary side view in elevation with parts broken away :and in section of the apparatus shown in Fig. 1'; .and

Figure 5 is an enlarged perspective view ofthe trolley.

As shown in the .drawings Vthe apparatus of this invention is adapted for usewithinthe'hold of a ship I having a .plurality .of ` decks 2 and 3 the latter being of conventional construction reinforced. by steel channel'or angle deck beams 4i. As, a general practice the deck beams 4' are ordinarily positioned parallel to one another athwartship with a uniform spacing throughout the vessel. Depending upon this habit of con,- struction the apparatus of this invention is provided with anoverhead anchorage trolley 6 comprising a framek 1, transverse axles 8,v outwardly facing wheels Si, inwardly facing wheels @I and a head block Ill. Secured. toV the` frame 0f the trolley lis a pair ofhorizontally acting retain? ing rollers -Il so. positioned as to cooperate with wheels @I and to positively.y retain the trolley Yli upon the lower anges of anladjacent pair of deck beams 41.

' The trolleyispreferably made of the lightest possible construction consistent with strength, usingV for the lpurpose lightweight alloys and the like with the object in viewv of confining the weight ofthe same'within limits which can be conveniently handled manually. To permit shifting of` the trolley 6 `from one4 pairoi deck beams ll to anotherthe laxles 8 are provided with detachable Sleeves I2 which may be manually separated or locked in place as desired, thus permitting the trolley to be removed manually from one pair of deck beams 4' and placed upon any other desired. .Head .block It is carried on a swivel mounting not shown borne upon a subcarriage I3 having rollers I4 thus permitting the head block I0 to `turn .or to be shifted longitudinally of the axle to accommodate to the position of the load.

Arranged .to be joined with the block IQ by means of .a hoisting line l5 is a high-lift base.- supported hook assembly I6 made up of a base `Ig'I having a fulcrum support 42, -a boom I8 of length greater than the spacing .between decks and a hook end- I9. Mounted 4.upon the .boom I8 are guide sheaves '20 `and 2l arranged to lead the hoistingfline I5 toa -fair engagement with sheave 22 of a longitudinally movable double block 23 carried on the lower part of the boom I8 as shown. The longitudinally movable double block 23 is made up of a trunnion'shaft 2t carrying end yrollers `2 5 Aand .having `a transverse threaded hole adapted .to engage an actuating screw 26 mounted uponboom I8 as shown in Fig. .4. The double block-23 alsoA includes in addition .to the sheave .2.2 Ypreviously referred to, a similar sheave 271 mounted .as shown more Aclearly in Fig. 3. End V`rollers 25 .are positioned between and guided .by inwardly .facing guide :rails f5 Asecured to the inner 'faces of the channels making up the boom I8.

Hoisting line I after passing around sheave 22 extends to and passes around a sheave 28 mounted near the upper end of the boom I8 and then returns to the sheave 21, and after passing around the same extends to a dead end connection 29 secured to the upper end of the boom I8.

The screw 26 previously mentioned is mounted for rotation in an upper bearing 30 and extends downwardly through a lower bearing 3| to join with a beveled driving pinion 32 secured to its lower end. The pinion 32 is arranged to be driven by gear 33 mounted upon the output shaft of a power unit 34 carried upon the base I1. The base I'I is also provided with a power supply cable reel 35 from which a flexible power cable 3B extends to be joined with suitable power outthe ship. Extending upwardly from the base Il in the fashion of a hand truck handle is a handle bar 3l permitting the hook I6 to be manually shifted, an operation which is facilitated by the balancing effect of the power unit 34 with respect to the boom I8.

In operation with the trolley 6 in place for the performance of a lift, the hook end I9 of the assembly I6 is manually brought to a position approximately below the trolley 6. The power unit 34 is then operated by manipulation of control 38 so as to move the double block 23 upwardly on the boom I8 making available slack in the hoisting line I5. The end 39 of the line I5 is then removed from its anchorage on the boom I8 and manually reeved through the head block I8 and brought back to its anchorage and secured. The apparatus is now in condition to perform a lift which is accomplished by manipulating the control 38 so as to cause the double block 23 to be moved downwardly on the boom I8 thus raising the boom I8 to a position, for example, as indicated by broken lines in Fig. 1. Thereupon slings may be adjusted to a package 4D as shown and thereafter by further operation of the power unit 34 the package 40 may be brought to the position shown in Fig. 1. It will be understood, of course, that horizontal movement of the package 4U throughout the length of the beams 4 may be manually effected in conjunction with the lift just described and in this way cargo may be stowed or broken out from upper courses even though of substantial bulk and weight.

By reason of the ready portability of the overhead anchorage trolley E, arrangements may be quickly made for the lifting of loads at any point throughout the hold. When not in use the base supported hook assembly may be readily moved out of the way and stowed. The mechanism further is simple and obvious in its manner of functioning and may readily be operated by skilled stevedores without special instruction or experience. By reason of the nature and construction of the base supported high-lift hook utilization of the head room of the hold to a degree exceeding that of the usual hoisting means is made possible.

A further aspect of utility of the apparatus of this invention is the availability of the hoisting line I5 for use as a whip line or skid line for dragging packages across the deck. When it is desired that the line I5 be used in this manner the parts are raised to the position shown in Fig. 1 and the hook I6 secured to the trolley 6 by a temporary connection not shown. This permits CII the end 39 of line I5 to be removed from its achorage at the end of boom I8 and upon manipulation of the control 38 to be fed out over sheave 2| for use as a whip or skid line. In case of such use the trolley 6 is preferably locked against horizontal movement by means not shown so as to provide sufficient reaction to permit the sliding of a heavy package across the deck.

I claim:

l. In a cargo stowing tackle adapted for use between decks of a cargo vessel the combination comprising an overhead anchorage means adapted to engage and be secured to overhead deck beams of a deck of said cargo vessel; a base supported high-lift hook assembly having a hook end adapted to be raised and lowered, a base end adapted for fulcrumed support on a deck beneath said rst mentioned deck, and a boom portion of lets situated in convenient locations throughout length substantially greater than the spacing between said decks, joining said base end and hook end; and power operated hoisting means mounted on said high-lift hook assembly adapted to engage said overhead anchorage means and the hook end of said base supported hook and to move said hook end to and from said anchorage means.

- 2. In a cargo stowing tackle the combination comprising a shiftable overhead anchorage means adapted to engage and derive support from overhead deck beams of a deck of a, cargo vessel, a base supported high-lift hook assembly having a hook end adapted to be raised and lowered, a base end adapted for fulcrumed support on a deck beneath said first mentioned deck, and a boom portion of length substantially greater than the spacing between decks joining said base end land hook end; and power operated hoisting means adapted to engage said overhead anchorage means and the hook end of said base supported hook and to move said hook end to and from said anchorage means.

3. In a cargo stowing tackle the combination including-an overhead anchorage means comprising a trolley adapted to engage and derive support from the lower flanges of overhead deck beams of a cargo vessel, said trolley including a head block; a base supported high-lift hook assembly having a hook end adapted to be raised 'and lowered, a base end adapted for fulcrumed support on a deck beneath said rst mentioned deck, and a boom portion of length substantially greater than the spacing between decks, joining said base end and hook end; a hoisting line extending from said hook end of said high-lift hook assembly to said head block on said trolley and back to said boom; and power operated means mounted on said high-lift hook assembly adapted to extend and retract said hoisting line to cause raising and lowering of said hook end.

NILS PETER ERIK ANDERSEN.

REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS Number Namev Date 153,643 Wendel July 28, 1874 1,450,882 Beckwith Apr. 3, 1923 1,724,411 Pitcher Aug. 13, 1929 1,765,408 Elliott June 24, 1930 2,019,760 Mattro Nov. 5, 1935 2,196,065 Everard Apr. 2, 1940

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