US1863899A - Hoisting bucket - Google Patents

Description

June 21, 1932- J. CUMMINGS T AL 1,863,899

HOISTING BUCKET Filed July 11, 1930 g Q LeeJHewitt I F E 5J.D.Cummi-r gs INVENFR ATTORNEY Patented June 21 1932 UNITED STATES JAMES D. CUMMINGS AND LEE 3'. HEWITT, OF 'HOUSTON,'.TEXAS nors'rme nuoxn'r Application filed July 11,

The invention relates to buckets to be used for hoisting materials to and from vehicles or other means of conveyance therefor. The device is similar in general purpose to the ordinary type of clam shell bucket now in ordinary use.

It is an object of the invention to provide a simple and cheaply constructed type of bucket of this character which may be furw nished to the operator at an economical price and which will be of strong and sturdy construction and adapted to withstand the usual strains to which these buckets are subjected.

lVe desire to provide a bucket of this character which is materially lighter in construction than the ordinary bucket but which will be adapted to perform the service for which this type of bucket is used.

It is also desired to provide a simple means of operating the bucket whereby it may be opened or closed as desired with a minimum of manipulation.

Referring to the drawing herewith, Fig. 1 is an end elevation of the device embodying our invention.

Fig. 2 is a side elevation thereof; and

Fig. 3 is an end elevation showing the manner in which the device is operated, certain parts being broken away for greater clearness.

In constructing the device it is contemplated that the same may be made out of steel pipe, or other similar tubular construction of sufiicient thickness to provide the necessary structure. We take a section of pipe of such construction and divide the same diametrically into two sections, each of these sections 1 is closed at its ends by semi-circular plates 2. These two sections thus provided are hinged together along their longitudinal meeting edges by hinges of the type shown in the drawing. Each of the sections is pro vided with a bracket 4, one of which is forked at its ends, as shown at 5, to receive a tongue 6 upon the adjacent bracket 4.

The members 5 and 6 are provided with registering openings therein to receive the hinge pin 8 which may be held in place by a cotter pin 9 or other similar expedient. These brackets are preferably secured to the 1930. Serial no. 467.206.

cylindrical wall of the bucket by welding at 10 or by other similar means. We provide two hinges, one adjacent each end of the bucket.

To open and close and otherwise operate the bucket we provide two independent arms 11' approximately midway-between the ends of the bucket and slightly above the center thereof extending on a tangent from the periphery of the bucket members. These arms are of suflicient length so that the upper ends overlie the bucket members when the bucket is in open position, as seen in Fig. 3. The length of the arms 11 is of advantage in closing the bucket against the resistance of the material being transported because the length is available to give an effective lever arm greater than the distance between the hinge 8 and the engaging lower edge of the bucket members. Thus an enormous force may be exerted to close the bucket which is of advantage in moving clay, brick work and like materials. These arms 11, as shown in Fig. 1, are inclined toward each other to a point spaced somewhat from the bucket and are then curved inwardly at 12, the ends crossing 7 each other as shown in Fig. 1, the extremities thereof being provided with openings 13 to 7 receive operating chains 14. The inner ends of these arms are welded at 15 to the side of the bucket and are provided at this point with openings 16 to receive the operating chains 17.

In the use of this bucket the same will be suspended from av boom or other similar operating device such as is ordinarily employed with buckets of this character. The chains 17, which are secured in the opening 16 adj acent the body of the bucket, will be connected together at their upper ends to an operating chain or cable. The chains 14 at the outer ends of the levers will be likewise connected at their upper ends to a second operating chain or cable and it is to be understood that these operating lines are capable of being raised or lowered by means of a Windlass, winch or other similar structure now in ordinary use.

When the device is to be opened the bucket is suspended by the chains 17. This will hold the two jaws of the bucket in the position shown in Fig. 3 and when the device isilOO thus dropped upon the material to be raised the bucket may be closed to include the material by slackening off on the line connected with the chains 17 and exerting a pull upon the chains 14. This will tend to pull the ends of the arms upwardly into the position shown in Fig. 1, thus closing the jaws and filling the bucket which may be then raised and moved to the position where it is to be opened to drop'the material and this may be done by slackening up on the line connected with the chains 14 and supporting the bucket on the chains 17.

It will be seen that this structure is very simple and economical and one easily operated. Furthermore, there are no heavy pieces connected withthis bucket. It .is of light structural construction and may be furnished to the trade at a very reasonable price.

WVhat we claim as new is:

l. A grab bucket including two opposed bucket members hinged together at one side, an arm fixed to each of said members and extending beyond the hinged sides thereof, said arms being independent of each other, each of said arms being of such length that the upper end overlies said members when the bucket is in open position, and means connected to the upper ends to pull on said arms to close said member, whereby the length of the effective lever arm to close said members is greater than the distance from said hinge to the open edge of said members.

2. A grab bucket including two hinged bucket members, an arm extending tangent to the periphery of each member and of such length that the upper end thereof will overlie the opposing member when the bucket is open and provide an effective lever arm for closing said member of .a greater length than the distance from the hinge to the engaging edge 01" said members. i

In testimony whereof I hereunto affix my signature this 5th day of July, A. D. 1930.

JAMES D. CUMMINGS. In testimony whereol I hereunto afiix my signature this 2 day of July A. D. 1930.

' LEE J. HElVITT.

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