US351022A - Hoisting apparatus - Google Patents

Description

(No Model.)

A. BETTELEY.

HOISTING APPARATUS.

Patented Oct. 19, 1886.

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UNirEn STATES PATENT @rrrcn.

ALBERT BETTELEY, OF BOSTON, MASSACHUSETTS.

HOISTING APPARATUS.

SPECIFICATION forming part of Letters Patent No.351,022, dated October 19, 1886.

' Application filed January 18, 1886. Serial No. 188,934. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT BETTELEY, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Hoisting Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention relates to a hoisting appara tus which may be used for removing cargoes of such material as coal, salt, and so forth, from vessels, being intended to be used in connection with conveying apparatus for moving the cargo from' the hold of the vessel between the hatchways to the point below the hatchways, from which said material is raised by the hoisting apparatus. Such conveying apparatus forms the subject of another application for Letters Patent filed herewith.

The hoisting apparatus of the present invention consists, essentially, oi'a bucket or receptacle divided vertically into two parts, which are pivoted or hinged together above the main body of the said receptacle, so that when separated they will sink into a mass of loose material, and if then drawn together will inclose a portion of the said material, which may then be raised while the parts of thebucket are together, and may then be discharged at the desired level by again separating the parts of the bucket,which are provided with long arms extending vertically above them,.

and one connectedwith each side of the bucket, which, together with the said arms, operate much like the jaws or members of a pair of pinchers. Two sets of these arms are pro vided and so arranged that the extremities of one set of arms, which are used for closing the bucket, approach one another as the members of the bucket close together, and the ex tremities of the other set, which are used to open the bucket, approach one another as the members of the bucket recede from one an other or open. The bucket is raised and lowered and opened and closed by means of suspending ropes or cords connected with the said arms in such manner as to tend to draw their extremities together, and when the strain on the cord connected with the closing-arms is relaxed the weight of the bucket, being wholly suspended upon the other cord, will cause it to draw the opening arms together and open the bucket, in which condition it will be lowered into the material. Then the strain on the cord which thus opened the bucket will be relaxed, and by hoisting on the other cord the arms which close the bucket will first be drawn togcther,closing the bucket in the material, and thus filling the bucket, and then raising the same with its load.

Figure 1 is an end elevation of a hoisting device embodying this invention, showing only the arms which close the bucket, they being shown in full lines in the position assumed when the bucket is closed, and in dotted lines in the position assumed when the bucket is open; Fig. 2, a side elevation of the bucket; Fig. 3, a vertical section on line 00, Fig. 2, showing only the arms which open the bucket, which are shown in full lines in the position occupied when'the bucket is closed, and in dotted lines in the position occupied when the bucket is open.

The apparatus comprises a bucket composed of two members, a a, which when closed together form a receptacle, (shown as cylindrical in shape,) and which are connected with arms I) 1), respectively, pivotally connected together at I)", and so arranged that their extremities I) I) approach one another as the members a a of the bucket approach one another, being in the position nearest together, as shown in full lines, Fig. 1,when the said bucket is closed, or the two parts a a in contact with one another, these arms being used to close the bucket. There are preferably two sets of the closingarms b b, one on each end of the bucket, as shown in Fig. 2.

The hoisting-rope, connected with the closingarms I) b at either end of the bucket, is divided into two parts, 0 0, one extending to each arm and passing over asheave at the end thereof, and connected at its end with either of the arms,after having passed back and forth between the arms over any number of sheaves, which may be needed in order to multiply the power tending to draw the arms together relative to the tension on the rope. The other cord, 0, in a similar manner passes over a sheave at the end of the arm I)", and then the same number of times as the cord 0 between the said arms, and is finally connected with the end of the opposite arm to that connected with the end of the cord 0. The two cords c 0 may be con- ICO nected together at any desired point above the arms, and also, if desired, connected with the cords 0 Fig. 2, passing in a similar manner to the other set of closing-arms, so that all four 5 cords may unite in a single rope which will pass over the pulleys of the derrick or other overhead apparatus to the winding-drum of the hoistingengine, all of which may be of usual construction. The parts a a of the IO bucket are also connected,preferably at a point between their ends,with another pair of arms,

d (1, so arranged that their extremities are farthest apart when the bucket a a is closed, and approach one another as the bucket opens;

and the said arms are connected with two branches, e cf, of another hoisting-rope in a similar manner to that in which the c'ords c c are connected with the arms I) b, the cord 6, for example, passing over a pulley, d", at the end of the arm d, and having its'extremity connected, as shown, with the same arm d, after having passed over a sheave, d, at the ends of the arm (1, and the cord e passing over a pulley, 61 at the end of the arm d, and being connected with the said arm (1 after passing over a sheave, d, (see Fig. 2,) on the arm d. The cords e 6 may be connected together, and W111 pass through the overhead supports,independently of the cords c c, to a separate hoist o ing-drum, which may turn in either direction independently of that which controls the cords c c, and by properly manipulating the drums the whole weight of the apparatus may be brought upon either set of suspendingcords, 5 as desired. Thus by slacking the,cords c c the weight is brought wholly upon the cords e e, and the strain of the said cords will draw the arms d d together, moving them from the full to the dotted line position, Fig. 2, 40 and thus separating the half-buckets to discharge the contents, and the bucket, with its parts thus separated, is lowered into the material to be raised, the cords c 0 being kept slack, and sustaining but little if any weight 5 during the operation of lowering the bucket into the material. The bucket, with its parts thus separated,will sink by its weight into the material, and the cords e 6 will be paid out sufficiently to afford the slack for the movement of the arms d d from the dotted t0 the full line position, Fig. 3. Then the cords 00, connected with the closing-armswill be taken up, and owing to the leverage and multiplication of power between the ends of the arms I) b the latter will be drawn together from the dotted to the full line position, Fig. 1, before the weight of the bucket is overcome, thus closing the parts a a together in the mass of material and filling the bucket,after which, by 'further taking up of the cords c c and simultaneous taking up of the cords e 6, without, however, bringing any considerable part of the weight on the latter cord, the bucket will be raised in its closed condition, with the material in it, which material may be discharged after the desired level is reached by slackening the cords'c c'with relation to the cords cc, and thus opening the bucket, as before described.

The arms b 2) between the bucket and their extremities connected with the cords cross over, as shown in Fig. 1, when the bucket is closed, so that the movement of opening the bucket at first brings the intermediate part of the said arms nearer together, as shown in dotted lines, rather than separating them, and it is not until the bucket is wide open that they are separated, and then not to an 'extent greater than the width of the open bucket, so that the latter can extend down through the hatchway of a vessel into the hold, and in a similar manner the arms 61 d are bent toward one another in the part between the bucket and their-ends, as shown in Fig. 3, so that the upright partsof them, when the bucket is closed, are substantially parallel, and these parts are sufficiently close together to pass through the hatchway, (indicated in dotted lines at B.)

I claim- I 1. In a'hoisting apparatus, a bucket or receptacle composed of two members pivoted together, and each provided with two sets of arms extending upward from the bucket, and arranged with the extremities of one set of arms most widely separated and the other set of arms closest together when the bucket is closed, and the reverse, and hoisting-cords connected with each set of arms, as described, whereby the strain on either hoisting-cord tends to draw the ends of the corresponding set of arms toward one another, substantially as and for the purpose set forth.

2. Ahoistingapparatusconsistingolabncket or receptacle composed of two parts hinged together, and having connected with it arms extending above the bucket, the said arms crossing one another in the portion between the bucket and their extremities, which extremities are nearest together when the bucket is closed, and hoisting-cords connected with the said arms with the tendency to draw them together, substantially as described.-

3. The combination of the two half-buckets pivoted together, with arms extending up 5 ward from said buckets, and having their ex-' tremities most widely separated when the bucket is closed, the portion of thesaid arms between their extremities and the bucket be ing bent toward one another, and the extremities being connected with hoisting-cords having a tendency to draw them together and IIO open the bucket, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two sub scribing witnesses.

ALBERT BETTELEY.,

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