US256100A - calkins - Google Patents

Description

G. W. GALKINS &'J. W'ooDH-I'LL.

BLEVATOR BUGKET.

Patented Apr. 4, 1-882.

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UNITED STATES PATENTv OEEICE. y

GEORGE W. OALKINS AND JOHN WOODHILL, OF CLEVELAND, OHIO; SAID WOODHILL ASSIGNOR TO SAID OALKINS.

ELEvAToR-BUCKET.

SPECIFICATION forming part of Letters Patent No. 256,100, dated April 4, 1882.

Application filou october s, ists.

To all whom fit may concern Be it known that we, GEORGE W. UALKINs and JOHN WooDHtLL, of Cleveland, in the county of Quyahoga, State of Ohio, have invented certain new and useful Improvements in Hoisting-Buekets, which are fully described in the following; specification and the accompanying drawings, in which- Figurel represents a derrick having one of 1o ouriinprovedbucketssuspendedthereto. Fig. 2 is a vertical section of the bucket. Fig. 3 is a plan ot the bottom of the bucket.

Our invention relates to buckets used in handling and dumping coal, stone, and-other articles-as, for example, in loading and unloading vessels; and the invention consists of a peculiarly-pivoted bucket and ot its operating devices, as hereinafter fully described.

A designates the body ot' the bucket, made 2o usually of iron.

B is an angle-iron hoop, secured to the bottom edge ofthe bucket. The bottom D of the bucket is made preferably of wood, because it is lighter, cheaper, and lasts longer than iron, and in order that the lower end of the bucket may not be too heavy. This wooden bottom rests on two iron cross-bars, C C, which are supported by the hoop B, 'as shown.

The bucket is pivoted within and to the 3o bail E by means of the projecting' pins F, fixed to the body A at such points as that the center of gravity of the empty bucket will be below the pivots and the center of gravity of the loaded bucketwill be above the same pivots.

,3 5 G is a metallic piece fastened at the top to the outside of the bucket, and provided with a central notch, and tapered from the notch toward each end, forminga catch for the springlatch H, adjusted in a slot or recess, l, in one 4o arm ot' the bail. The spring-latch is provided at its upper endwith an eye for attaching to it a cord, J, for releasing the bucket from the latch, which is ,adjusted to bear against the catch G and automatically spring into its notch when the bucket returns to the upright position. The upper part of the bail is adapted to be suspended to any derrick or craneA for hoistingand conveying the bucket to theplaees for charging and discharging it.

5o It will be observed that the automatic dumping ot' the bucket and its return to an upright position'depend upon and are secured by the vertical adjustment ot' the pivots above and -below the centers of gravity of the empty and loaded bucket, as described, and that therefore vthe pivots' may be located onthe vertical centerline ot' the bucket, thus allowing the use of an entirely round bucket, which is cheaper and more readily made than the usual form of an oblong or angular bucket, and also alloW- 6o ing the bucket to be dumped and emptied as readily at one side as at the other, thus facilitating the accurate discharge ot' its contents at the precise place required; and a bucket thus constructed, adjusted, and pivoted will automatically assume and maintain, while empty,

an upright position without the use of stops or other appliances ordinarily employed in hoisting-buckets.

These features of construction and adjust- 7o ment we consider essential to the rapid and accurate manipulation of the bucket in charging as well as discharging it.

The empty bucket, being in the upright position shown in Fig. l of the drawings, where it is securely held by the spring-latch, is filled and conveyed to the place of deposit, when the spring-latch H is drawn out ot' the notch ot" the catch G by the rope J, and the center of gravity being above the pivots, the bucket` Ec automatically dumps and empties itself, and when emptied, the center of gravit-y being below the pivots, the bucket automatically returns to the upright position, the latch automatically springing into the notch ofthe catch and fastening the bucket in the position for reloading.

It will be readily seen that the point of location, vertically, of the pivots depends somewhat upon the comparative weight of the lower 9o and upper ends of the bucket. That precise point is ascertained by any suitable devices after the bucket is made, it being essential to the easy, rapid, and proper operation' of the bucket that the pivots be located so that when the bucket is empty there will be just enough of preponderance of weight below the pivots to carry the bucket to the upright position with suicient forc'e only to move backward the latch and allow it to spring into the notch of the roo catch.

It is evident that if the pivots should be placed too low the bucket would not automatically return to the upright position, and if the pivots should be placed too high, the empty bucket would return with too great force, and the. loaded bucket would not so readily, if at all, dump and completely empty itself.

What We claim as new, and desire to secure by Letters Patent, is

1. A hoistingbucket suspended upon pivots located so as to be above the center of gravity of the empty bucket and below the center of gravity of the loaded bucket, whereby the loaded bucket, when released from its latching devices, will aautomatically dump and empty itselfat either side, and when emptied the bucket will automatically return to and latch itself in an upright position, substantially as and for the purposes described.

2. The combination of a pivoted bucket having a notched catch with a bail provided with zo a recess or slot, and having a spring-latch arranged in the recess or slot, the devices and combination operating in the manuerdescribed, whereby rapid charging and discharging of the bucket is accomplished, substantially as set 25 forth.

G. W. GALKINS. JOHN WOODHILL.

Witnesses:

F. W. CADWELL, SAMUEL OsTERuoLD.

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