US879972A - Excavating, hoisting, and conveying bucket. - Google Patents

Description

No. 879,972. I PATENTED FEB. 25, 1908. J. MAROUSGH.

EXCAVATING, HOISTING, AND CONVEYING BUCKET,

APPLIOATIONIILBD JUNE 5. 1907.

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EXGAVATING, HOISTING, AND CONVEYING BUCKET.

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JOSEPH MAROUSCH, OF CLEVELAND, OHIO.

EXCAVATING, HOISTING, AND CONVEYING BUCKET.

Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed June 5. 1907. Serial No. 377.442.

To all whom it may concern:

Be it known-that I, Josnrn MAROUSOH, Git1- zen of the United States, residing at Oleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Excavating, Hoisting, and Conveying Buckets, of which the following is a specification.

This invention relates to excavating, hoisting and conveying buckets, and is particularly an improvement on the invention shown in my United States Patent No. 782,864, dated February 21, 1905.

The invention relates to that class of buckets which are hoisted and operated by means of a single cable, and has for its object to so arrange the cable and associated parts as to materially increase the excavating power of the bucket and to release the strain on the parts thereof, as well as to decrease the load on the engine. I

A further object of the invention is to provide a latch which will prevent the bucket from opening, until the latch is disengaged by hand.

Other objects and improvements will be apparent from the following description.

In the accompanying drawings, wherein the invention is illustrated, Figure 1 is a side elevation with the buckets in open position. Fig. 2 is a similar view showing a different arrangement of the hoisting cable. Fig. 3 is a cross section. Fig. 4 is a side elevation showing the buckets in closed position. Fig. 5 is a detail of the upper cross head and the sheaves carried thereby.

Referring specifically to the drawings, A indicates the buckets swinging between side supporting frames B and suspended by two links K and pivotally connected to angular levers D which are pivoted to the side plates at (Z. These angular levers are pivotally connected at the elbows to links G connected to a horizontally arranged slide C which in its lower position, when the bucket is opened, rests upon a cross bar 15 which extends between the lower ends of the side plates B at the lower ends of the slide ways therein and forms a stop to limit the descent of the slide C. The buckets are closed, and theslide O raised and lowered, by means of a cross head 24, which slides in the guides b in the side plates B, and carries hooks R which engage pins 26 projecting from opposite sides of the cross plece C. All this is substantially the same as the construction shown and described in my patent above referred to, which may be consulted for further particulars.

6 indicates a top sheave supported on brackets 7 projecting upwardly from a top cross piece 15 extending between the tops of the side plates B. A pair of lower sheaves are supported or carried by the sliding cross head 24 which is preferably made in hollow form, with a partition 25 at the middle to support the curved arms 30 extending on opposite sides of the cross head and secured to the partition by the bolts 8. The arms 30 are angle bars, to give the required strength. The sheaves 13 are ournaled between the op posite ends of the said arms.

X indicates, as a whole, a traveling carrier of a Well-known kind, arranged to run upon a track Y, and the bucket is automatically locked to this carriage and travels there with after it is hoisted thereto.

Referring to the arrangement of the hoisting cable shown in Figs. 1 and 4, said cable 10 is fastened at its dead end to a pin 17 on the carriage and extends thence around one of the sheaves 13, over the sheave 6, around the other sheave 13, over a sheave a; on the carriage and under a hook block 18 and thence around another sheave 90 on the carriage, and thence away to the hoisting mechanism. The block 18 is connected to a hook 14 which engages an eye 22 on a bracket 20 connected to the top cross piece 15 at the middle thereof.

In the cable arrangement shown in Fig. 2 a short cable is connected at its dead end to the pin 17 and extends thence around the sheaves 13 and 6 in the same manner as above described, and its free end is engaged by the hook 14 of the block 18. The hoisting cable 10 is connected at its dead end to the carriage as indicated at 17 and extends thence around the block 18 and the sheave a; on the carriage.

The arrangement shown in Fig. 1 is particularly serviceable in work requiring a long drop, as when operating on ore or the like in a vessel. That shown in Fig. 2 is useful when operating on a stock pile, to accommodate the necessary movement of the buckets. The hooks R, which connect the cross head 24 and the cross beam C at each operation of the bucket, are pivoted to said cross head at r and, as said, engage the pins 26 carried by the cross beam. The tails of the hooks are pivotally connected to a lever 28 mounted upon a fulcrum piece F and projecting into position to strike the lower end of a pin 50 projecting downwardly from the the buckets are closed, as shown in Fig. 4.

The plurality of notches allows the locking position to be varied. The latch swings free, and when the buckets are closed the pin a engages in the notch and so forms a back stop which prevents the buckets from opening, even after the hooks R are disengaged in the manner above described. The latch can be tripped by hand or by any suitable tackle or rigging. If desired, the tail latch may be omitted or rendered inactive, and the tripping pin 50 removed, and the release lever 28 may. then be connected to a line so that the hooks may be disengaged and the buckets dumped in the manner described in my patent.

In operation, when the buckets are dropped to the material and the cable slacked, the cross head 24 will fall by its weight and the hooks R will engage the pins 26. Then on the hoist the buckets will close, the cross head 24 and beams C being locked together by the hooks and carried to the top of the guides B. The block 18 will lock in the carriage in a wellknown manner and the carriage will travel with the bucket to the dump. The buckets may then be dumped by releasing the tail latch. N, if the same is used, or by the trip lever 28 if the tail latch is not used. The cable and sheave arrangement relieves the intense strain on the bucket and tackle incident to the direct connections shown in my said patent, and permits the free use of the bucket even in hard, frozen or heavy material.

I claim:

1. The combination of a carriage, a supporting frame, buckets arranged to open and close in the frame, and a closing, hoisting and conveying cable attached at its dead end to the carriage and operatively connected to the buckets.

2. The combination of a carriage, a supporting frame having an upper sheave therein, buckets pivotally connected to the frame, a lower sheave connected to the buckets and movable up and down, and a closing, hoisting and conveying cable attached at its dead end to the carriage and extending around the sheaves. I

3. The combination of side frames having vertical guides, and a cross piece at the top, a top sheave at the middle of said cross piece, a cross head movable up and down in the guides, arms projecting from the cross head on opposite sides thereof, sheaves mounted on the arms, buckets supported by the side frames and having an operative connection to the cross head, and a hoisting cable extending around the last mentioned sheaves and intermediately around said top sheave.

4. The combination of side frames, buckets hung therefrom and adapted to swing open and closed, and a latch pivoted to the side frame and engageable with a projection on a bucket when the buckets are closed and acting to prevent opening thereof.

5. The combination with a frame, of buckets hung therein and arranged to swing together or apart, a cross piece slidable up and down in the frame, between and connected to the buckets, a cross head slidable up and down in the frame above the cross piece and having a hook automatically engageable with the cross piece when the cross head is lowered to contact therewith, means at the top of the frame to automatically disengage the hook when the cross piece is lifted to the top of the frame and the buckets are closed, and a supplemental latch engageable with the buckets and arranged to hold the same closed until released.

6. The combination with a carriage, and an excavator having buckets which open and close, of a closing cable fixed at one end to the carriage and operatively connected to the buckets to close the same, and a hoisting and conveying cable fixed at its end to the carriage and connected to the other end of the closing cable.

7. The combination with a frame, and a pair of swinging buckets hung therefrom, of a cross piece slidable up and down in the frame and connected to the buckets, a cross head slidable up and down in the frame above the cross piece and having hooks automatically engageable with the cross piece when lowered thereto, a lever connected to the hooks, and a stop projecting at the top of the frame and arranged to be struck by the lever and to release the hooks when the cross head and piece are raised to the top of the frame.

In testimony whereof I aflix my signature, in presence of two witnesses.

JOSEPH MAROUSCH.

Witnesses:

JOHN A. BOMMHARDT, SHIRLEY BOMMHARDT.

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