US2645187A

US2645187A - Removable snatch roller

Info

Publication number: US2645187A
Application number: US237945A
Authority: US
Inventors: Guadagna Joseph
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-07-21
Filing date: 1951-07-21
Publication date: 1953-07-14
Anticipated expiration: 1970-07-14

Description

July 14, 1953 .1. GUADAGNA 2,645,187

REMOVABLE SNATCH ROLLER Filed July 21, 1951 Patented July I4, 1953 REMovABL/ESNATCHRQLLER Joseph Guadagna, Brooklyn, N. Y. Application July 21, 1951', serial No.`237,945 y z claims. (ci. 10s-154)Y v My invention relates to a removable snatch 9' roller and the combination and adaptation" of parts of the same as Will be more fully hereinafter set forth. y Y

In loading a ship, the present practice isto handle the various items being loaded by a crane Y from the pier over and down the hatch intor the hold where the crew in the hold gradually lower it onto greased skids or dunnage and rollers` The wire-of a; drag wire snatch block is then secured around theitem being loadedwhich is secured at the other endito a hook fastened in the wally of the hold and the item is dragged to the nearest point where it is to be stored and'jimmied and pushed back into its final position. Duringthis long process of placing the item in its `finally loaded position the whipper wire of the loading crane is kept in use in this opera-tion and vnot released until the item Vis finally placed in its loaded position. This tie up of the main loading crane during the placing of each item in the hold also ties up the entire pier loading crew until the whipper wire is released thereby causingva tremendous loss of time for the entire loading crew amounting to ten minutes up to forty-five minutes on each item.

My removable snatch roller overcomes this serious difficulty and makes it possible to irnmediately release the whipper wire of the main loading crane as soon as the item being loaded is lowered into the hold onto four -by four pieces of Wood placed on the floor of the hold thereby freeing the wires so that the whipper wire can be immediately released and sent up for loading another item.

vThe main object of my invention as above indicatedf is to lighten the burden of the loading or unloading crew of a ship and to save the loading and unloading time up to one-third less time than now required in loading and unloading a ship by the present means generallyvv in use throughout the world.

Referring to the drawings.- Y

Fig. 1 is a side elevation of my device mounted on an H rail which is broken at each `end for convenience in illustration and having a'hook of a regular raising and lowering three part chain with pulley blocks. said hook being broken away I for convenience in illustration;

Fig. 2 is a vertical section on the line 2-2 of Fig. l;

Fig. 3 is an end view of my device in the open position for mounting it on or removing it from the H Tail; #.,1

Fig. 4 is a plan view from inside the hold of a ship' looking up at the combing.

In the drawings, 50 lis my complete removable snatch roller and 5is ya frame'preferably constructed lof steel or a metal of equal strength having cross ears 6 integral therewith and projecting therefrom, centrally boredat 'I and adapted to receive pins'8 having heads 8 integral therewith at one end andbeing threaded at the other end at 9A over which threaded `nuts I0 are adapted to "be secured. Thelower end of 5 terminates in an integral ring VI Ifinto which fits a hook I2 of the usual' raising and lowering `three part chainequippedwith the usual pulley blocks,Y only the broken'hookr I2 being vshownfor convenience s in illustratiom`v ff 'Near mengsel-@endet fraise YsN a iubuiar member 3| is formed integrally therewith and havingv y a central boring 32 'in alignment with borings 33 in roller carriers I3. p

A pair of roller carriers I3 yare pivotally hinged to the -earsll by rrfeainso'f4 pins' and 4"threaded, nuts I0. The upper ends o froller carriers I3 terminate in `three sided roller housings I4 in each ofy which are mounted three steel rollers I5 which have Abrass -lined vbushings I6 of usual lubricating structure. 'The rollers I5 are mounted on steel pins I9 threaded at one end at I'I to engage internally threaded holes I8 in said roller housings-I4 andsaid pins I9 y'have nuts 20 at theirfopposite ends integral therewith. Said pins I9'also have lubricating grooves 2I into the outer ends of whichare'threaded lubricating nipples 22 whereby lubricant .can be fedfdirectly through nipples 221mm bushings It..l A threaded-lock pin 'f 23 is adapted to thread into a half threading 24 in roller housing I4 and adjacent threading I'I of each of the pins I9 so as to lock them against accidental loosening and removal due to the almost constant rotation of the rollers I5 when Y my device is in use.

secured together in closed position by means of a vlocking pin 25 which is threaded at one end 25 and adapted to engage an internally threaded nut 21 integral `with one of the roller carriers I3 and 'the opposite end of said locking pin 25 terminates in a flange 28 and a vflattened portion 29 having a hole 38 therein adapted to be used by the regu` lar 'ballhoolgA always carried by the longshoreman, for removing and replacing said locking.

pin 25.

My removable snatch roller 50 is adapted to be l The pivoted roller carriers I3 are adapted to be to be used must be equipped with H rails 30 welded to the cross beams 34 of the coaming 35 or ceiling of the hold on each side of the hatchway 36 as shown in diagram in Fig. 4.

Pin 25 can then be removed by one of the longshoremen using his regular bail hook which each carries, and placing it through hole 38 turn pin 2S so as to remove it thereby permitting roller carriers I3 to open at their upper ends thereby permitting them to be placed around H rail 3U and the pin 25 replaced by setting it up tightly by means of the bail hook used in hole 3B.

It is therefore a very simple operation to place my device in operating position on the H rail and to remove it when nished.

item being loaded or unloaded to be raised or v The actual operation of my device` permits the lowered by the usual three chain and block and s pulley device in general use, shown in the broken oi hook l2 of said apparatus. The suspended item being loaded or unloaded is then merely pushed along suspended by my device 50 which rolls on rail on rollers I5 which are lubricated so that they roll perfectly and easily. v

In loading the items are lowered into the hold through the hatch 3,6l inv the usual manner by means of a power operated crane on the pier or on the deck of the ship. With my device, as soon as the item is lowered -into the vhold it is lowered A onto blocks so that the Whipper Wire from the loading crane can be immediately freed and released to go up for another load. My removable snatch roller combined with the usual three chain block and pulley lifting device picks up 'theload i from the iioor and by pushing it rolls it to .the desired spot for storing for the trip.

In unloading the whipper wire ofthe dock or deck crane is not required until the item has been picked up and rolled suspended on the rail to the spot directly under the hatch -36 and then the Whipper wire from the main crane is brought down and Without any delay immediately the load is taken up and another load is being brought under the hatchway 36 by my device ready for the immediate use of the whipper Wire and crane as soon as lowered into the hatchway 36.

So it is clear that my removable snatch -roller is equally valuable in saving up to one-third of the time in loading or unloading as well as materially lightening the heavy Work of the crew in placing and removing cargoes,

Many variations may be madein the structure 4 of my device without departing from the spirit and intent of the same and all such variations are comprehended Within the scope of the specication, drawings and claims as herein set forth.

I claim:

l. A removable snatch roller comprising in combination, a frame terminating at its lower end in hook hanging meansI a pair of roller carriers pivotallyconnected'fat theirlowerends to an intermediate portion of said frame, a three sided roller housing provided at the upper end of each carrier and supporting a plurality of roller means rotatably mounted on shafts therein said roller carriers being swingable from a position adjacent to .said frame to a spaced position, and releasable means for securing the roller carriers in said flrst'position wherein the releasable means include a locking pin extending through the roller carriers and an upper'; tubular portion of the frame. Y

.2. A removable heavy duty snatch roller1 Acomprising incombination, a heavy frame terminating at its lower end in heavy hook hanging means, a pair of heavy duty roller carriers pivotally connected at their lowerends to an intermediate portion of said frame, a roller housing provided at the upper end of each carrier and rotatably supporting a pluralityof heavy duty rollers thereon, said roller carriers being swingable from a position adjacent to said frame to a spaced position therefrom, and removablemeans for securing the roller carriers 4in'said rstposition wherein the releasablemeans.include a locking pin extending through .the rollercarriersand an upper tubular portion of the'frar'ne.

` JOSEPH GUADAGNA.

References cited inthe fue cf this patent UNITED STATES PATENTS 494,451 Germany .Mar. 22, 1030