US396664A

US396664A - Island

Info

Publication number: US396664A
Authority: US
Publication date: 1889-01-22
Anticipated expiration: 1906-01-22

Description

2 Sheets-Sheet 1. E. NE-WELL.

HOISTING BUCKET.

(No Model.) I

Patented Jan. 22, 1889.

INV NTI'J T EESE N. PETERS. Fhololilhngmpher. \Vashin ton. n. C.

(No Model.) 2 Sheets-Sheet 2. G. 'E. NEWELL.

HOISTING BUCKET. W No. 396,664. Patented Jan. 22, 1889.

N. PETERS, Phumuma u her, Wnhmglon, mC.

UNITED STATES PATENT OFFIC GEORGE E. NEWELL, OF PAIVTUCKET, RHODE ISLAND.

HOISTlNG-BUCKET.

SPECIFICATION forming part of Letters Patent No. 396,664, dated January 22, 1889.

Application filed August 6, 1888.

To all whom it may concern:

Be it known that I, GEORGE E. NEWELL, a citizen of the United States, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Hoisting-Buckets, of which the following is a specification.

My invention relates to that class of hoisting-buckets which are adapted for the purpose of lifting coal from the hold of a vessel; and it consists in providing the bucket with a powerful opening movement, as hereinafter fully set forth.

Figure 1 represents a top view of a hoisting-bucket provided with my improvement. Fig. 2 represents a vertical section taken in the line it of Fig. 1. Fig. 3 represents a corresponding section with the buckets open. Fig.4 is a similar view showing a modification of the power-multiplying movement for opening the bucket.

In the accompanying drawings, A A are the opposite holding jaws of the bucket, which are pivoted to each other by means of the bolt a, which passes through the lever Z), attached to the jaw A, and the arm Z), which connected to the jaw A. The arm Z) will thus be pivoted to the lover I) at a point intermediate of its ends.

At the adjacent inner corners, g, of the jaws A A are j ournaled the drums 1-3 B, which are provided with enlarged wheels 7a, to which the hoisting ropes or chains C and I) are respectively attached. The hoisting rope or chain (passes upward from the wheel it, to the periphery of which it is attached, through the guiding-eve c, t'm'med at the side of the lever 11, and which is provided with the friction -wheel (I, and the hoisting rope or chain I) passes upward from the wheel it, to the periphery of which it is attached, and through the guiding-eye (2, formed at the side of the arm I), and which is provided with the friction-wheel f, the said friction-wheels d and f being made to turn loosely upon the connectingbolt a.

To the cornersgg of the jaw A are attached the ropes or chains E, the said ropes or chains passing over the sheaves of the pulley-blocks F, which are attached to'the sides h of the jaw A, the said ropes or chains having their ends attached to the drum B at the points'i, so that when the wheel 71: and drum B are Serial No. 282,086. (No model.)

turned in the proper direction the jaws A A will be drawn toward each other with a twofold purchase, and when the wheel 7; is made of twice the diameter of the drum l a pull upon the hoisting rope or chain 0 will cause the closing of the jaws A A with a fourfold purchase, thus securing a powerful closlng movement upon the coal to be lifted. To the outer end of the lever b is attached the rope or chain G, the opposite end of which is attached to the drum B at the point j. The wheel 70, being made about twice the diameter of the drum 1%, will cause the jaws A A to be thrown open with a twofold purchase when pulling upon the rope or chain D, which is attached to the periphery of the wheel it.

Instead of the wheel 7;. and drum 1%, as above described, equivalent pulley-blocks, .T and K, may be employed, as shown in Fig. 4:, in which case the rope or chain D may pass around the wheel or sheave 70 of the pulleybloek J, which is attached to the fixed rod I, connecting the two opposite corners of the bucket-jaw A, and thence around the sheave of the pulley-block K, attached to the outer end of the lever Z), and have its end fastened to the block J at the point m, and by this means the bucket will be thrown open with a twofold purchase, as before, when pulling upon the rope or chain D. In order to still further increase the leverage for opening the jaws, an. additional number of sheaves can be employed in the pulley-blocks with a corresponding increase of power for opening the bucket. Instead of the red I, the pulleyblock J may be attached to the edge I of the bucket-j aw A, with a correspomling increase in the length of the lever Z); or the rod I can be placed at any intermediate point.

I claim as my invention In a hoisting-bucket, the combination, with the bucket-jaw and lover, of the opposite bucket-jaw pivoted to the said lever at a point intermediate of its ends, the guided rope or chain C, for closing the bucket, the guided rope or chain G, which is operatively c011- nected with the outer end of the lever, and the power-multiplying movement for opening the bucket, substantially as described.

GEORGE E. NEVVELL.

Vitnesses:

SOCRATES SoHoLEmLn, E. S. BOWEN.