US600583A - Steam shoveling - Google Patents

Description

(N0 Model.) 3 Sheets-Sheet E.

. 0. T. JONES. STEAM SHOVELING, DREDGING, AND EXCVATING MACHINERY. No'. 600,588.

Patented Mar. 15, 1898.

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3 Sheets-Sheet 2.

(No Model.)

O. T. JONES. STEAM SHOVBLING, DREDGING, AND EXGAVATINGMAGHINBRY. No. 600,583.

Patented Mar. 15, 1898.

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Y (No Modem 0. T. JONES. STEAM SHOVELING, DREDGING, AND BXGAVATING MACHINERY.

No. 800,588. Patented Mar. 15,?1898.

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Nirn STATES PATENT OFFICE.

OTIS T. JONES, OF KINGSVILLE, OHIO.

STEAM sHovELINc, DREDGING,

AND ExcAvATlNc MACHINERY.

SPECIFICATION forming part Of Letters Patent N0. 600,583, dated March 15, 1898. Application filed August 6, 1897. Serial No. 647,348. (No model.)

To all whom t 71cm/ concern,.-

Beit known that I, Oris T. JoNEs, a citizen of the United States, residing at Kingsville, in the county of Ashtabula and State of Ohio, have invented certain new and useful Improvements in Steam Shoveling, Dredging, and Excavating Machinery; and I do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to steam shovels, dredges, and excavating machinery; and the invention consists in the combined means for digging either forward or backward and then depositing the load onto a conveyor without resorting to the usual means of swinging the dipper and its supports to one side of the track, substantially as shown and described, and more particularly pointed out in the claims.

The usual construction embraced in this class of machines is to have a dipper operatively mounted on a boom or crane which is made to rotate and swing the dipper to either side of the line of travel and where the load is then deposited at the side of the cut. The operation consists, rst, in operating the dipper, and, second, in swinging the boom, and each operation requires a certain amount of labor and time. To save about one-half of this labor and time, I provide means whereby the swinging of the dipper to deposit its load to one side is obviated. p

In the accompanying drawings, Figure l is a side elevation of my invention, showing a portion of a car upon which the same is mounted and with the dipper down and. in position to dig forward. Fig. 2 is a longitudinal sectional. view with the dipper in dumping position. Fig. 3 is a sectional view looking down from line 3 3, Fig. 1. Fig. 4 is a cross-section looking forward on line 4 4, Fig. 1. Fig. 5 is a detail sectional view of the bucket and the automatic dumping-lever and bottom spring-` locking mechanism. Fig. 6 is a detail sectional view of the conveying-belt and its driving-chain. Fig. 7 is a reduced view of the dipper and its cooperating parts changed about to dig backward.

The main features which contribute to the object of this invention are the open circle 2 and the crane 3, the A-frame 4, which supports the crane, the dipper 7, and the conveyer 8. The crane 3 is constructed with two forwardly-extending beams 5, mounted on and fastened to the open circle 2, which is free to be rotated on its support or base 6,

that forms part ofthe car upon which the whole is carried. In dredging a scow would be used instead of a car, and the parts would be substantially the same with the exception of the addition of a backing-chain connected to the rod 37 of the arms 36, and which is well known and always used in this connection. The upper cross-beamsp) of the crane are supported and pivoted to the upper end of the forward beams 5 by a cross-bolt 10, and the other ends of the beams 9 are pivotally connected to a casting 1l, which is free to turn on a hollow stud l2, forming part of the top of the A-frame 4. The top beams 9 being thus pivoted at the top of the A-frame, and the forward beams 5 being part of the rotatable open circle 2, the crane and the parts supported thereon are seen to be free to swing to either side of the path of the car, and the mechanism which accomplishes this is as follows:

The circle 2 is provided with a ledge 13, upon Vwhich a chain 14 rests, and this chain 14 is fastened at the front thereof and. thence passing to the rear at either side of the circle and crossing each other to sheaves 15 be- A fore the ends are fastened to the rotatable drums 15. These drums 15 are free to rotate on a shaft 16, connected to and driven by gearing of the engine 17, a part of which is only shown as means for obtaining power. Each drum 15 has any suitable friction mechanism which will rotate either drum independently of the other when the friction is applied, and the object of these drums 15 and the chain attached thereto is to swing the circle and crane so as to place the dipper to dig or work at any angle. A wide sweep or digging range is thus obtained; but this swinging of the crane is not intended to be utilized to bring the dipper to either side of the work to deposit or dump the material scooped up. The common practice has been to follow this method of dumping the load to one side by rotating the structure that supported the dipper; but to overcome the loss of time and labor of this swinging I construct IOO to a sheave 22 on the beams 9.

the dipper-support with the crane 3, as described, and merely operate the dipper up pulley 24 in the tackle-block 25, attached to the bail of the dipper 7. From this pulley the chain passes up and around a sheave 26, mounted on bolt 10, and back to the tackleblock 25, to which it is then fastened. Drum 2O is made to rotate freely on its shaft 27 and frictional mechanism is employed to operate said drum through engine 17 when it is desired to lift the dipper. When the dipper is up, its own weight will carry it down into workin g position by merely releasing the friction mechanism and reversing the thrustingengines 28, which are connected by gearing to the pinions 18 on shipper-shaft 29.

The mechanism for operating the several drums and the dipper-arm I do not claim as new, this being old in the art and subject to v modification.

The A-frame and crane are supported by the back leg 29, which is securely fastened to the top of the A-frame at one end and anchored to the car-body at the other.

In Fig. 1 the dipper is shown down in digging position and in Fig. 2 as having been carried up and dumped, the dumping of the load having been accomplished by reason of the automatic unlatching of the spring-catch 30 of the pivoted bottom 31 of the dipper. The latch 30 is connected to a lever 32, pivoted on the dipper-arm, and when the dipper reaches the highest point the end of the lever strikes rod 37 and withdraws the latch, allowing the weight of the load to force open the door and dump the same into a trough 33, which carries the material to the central opening in the circle 2 and onto the conveyerbelt 8. This trough 33 is set at an angle of about forty-five degrees, and it occupies the space between the two forward beams 5 to a point sufficiently high to form a support for a false sliding bottom 34, which catches the material dumped thereon. This bottom 34 is used to cover the slot 35 in the bottom of the trough when the dipper is up and in position to dump, and a pair of arms 36, connected at its ends by a rod 37, is free to swing on the shipper-shaft 29, and when the dipper and dipper-arm are rising the rod 37 rides on the flat surface of the dipper-arm, gradually drawing up the false bottom 34 by the connecting-chains 39, and when the angle-plate near the dipper is reached the pulling up is up to catch the load. When the dipper descends, the false bottom 34 slides down by its own weight and allows the dipper-arm to come back in the slot 35 to assume the position as seen in Fig. 1. When the material has been dumped into the trough, it slides down and falls through the central opening of the circle 2 and its support 6 onto an endless conveyer-belt 8, which carries the material on an incline to one side and beyond the edge of the car. Separate means, such as cars or the like, could carry the material away as it is deposited in the center under the open circle 2. The conveyer is preferably constructed of a rubber belt 8 and is driven by a single chain 40, fastened by eyes or clips 41 to cleats 42 on each side of the belt. The chain and belt are carried by av series of rollers 43, which have depressions in which the links rest as they are carried around, and the shaft 44 of the end roller has a bevel-gear 45, which meshes with a gear 4G on shaft 1G.

When the dipper is to be used for backward digging, the crane is connected up as seen in Fig. 7. Here the dipper and dipperarm are shown reversed, the sweep of the bucket and the direction of the car being backward. This backward digging is mainly used for digging trenches, and when such work is desired a few hours work will suffice t0 change the various parts to their respective positions. No additional mechanism is required, the only change 'being in altering the position and relation of the various parts, and this alteration and change consists, first, of lowering the outer end of upper crossbeams 9 and supporting and pivoting the same to a lower point on the forward beams 5 by the cross-bolt 10. Then the dipper and dipper-arm and its supporting mechanism are moved out nearer to the end of beams 9, the dipper and its arm being reversed. This position now gives the dipper more room for an inward sweep, and the trough proper is entirely removed to allow the dipper to come up above the center of the open circle 2 and deposit the material directly into the opening therein. The only change in the operating mechanism for the bucket consists in dispensing with sheave 23 and moving sheave 26 back to a point on beams 9, so that the dipper 7 will be above the open circle 2 when drawn to its highest point and as seen in full lines in Fig. 7. The angle of the bucket in relation to the dipper-arm is also changed to bring about this result. These several parts when changed are fastened in any suitable way for the time being, the manner of fastening being neither new nor novel and not shown in detail in the drawings.

By having the dipper-chain 19 pass through the center of the hollow stud at the top of the A-frame and by placing the sheave on the A-frame a short distance below the pull of the chain from the winding-drum assists maaccelerated, so as to bring the bottom well terially in helping the back leg to support the IOO IIO

IIS

crane and relieve the strain due to the raising .of the dipper with a load therein. By having the chain pass through the hollow stud at the upper pivot-point of the crane an easier action is also obtained through the chain when the crane is swung to either side.

Vhat I claim as new, and desire to secure by Letters Patent, is

l. A combined steam shovel and dredge for excavating consisting of an A-frame mounted on a movable support, a crane pivotally connected to said A-frame, a rotatable support for said crane, a dipper operatively mounted on the crane, separate means to operate said dipper and crane, a receptacle on said rotatable support to receive the material from the dipper, and means on said movable support to carry said material away, substantially as described.

2. In a steam shovel and dredge, a crane and dipper, a moving support for said crane and dipper, and an open swinging circle rotatably mounted on said support to carry said crane, an A-frame pivotally connected to and in part supporting said crane, and means below said circle constructed to convey the deposit from the dipper to one side, substantially as described.

3. In a steam shovel and dredge, a crane, a swinging circle having a central opening supporting said crane, a dipper operatively mounted on said crane, and means to draw the dipper back and automatically dump its load into said opening, and a conveyer beneath said opening to carry away the load from the dipper, substantially as described.

4. In a steam shovel and dredge, a crane and a base carrying the same, an A-frame supportedon said base and an open circle free to rotate on said base serving as supports for said crane, a dipper mounted on the crane and a trough on the crane to receive the material from the dipper, means to operate said dipper to deposit its load in said trough, and a conveyer below the end of said trough to carry said deposit to one side, substantially as described.

5. In a steam shovel and dredge, comprising a fixed A-frame and a rotatable circle anda crane mounted upon said frame and circle, said circle being open at its center, a dipper operatively connected and supported on said crane, a trough having a false sliding bottom supported on said crane, above the opening in said circle, means to draw up said bottom when the dipper is drawn up in position to dump, means to automatically open the bottom of the dipper to dump its contents when the dipper and said bottom are drawn up, and means below said opening in the swinging circle to convey the deposit of the dipper to one side, substantially as described.

6. A steam shovel andy dredge comprising a crane supported by an A-t'rame and a moving base, said crane having its upper beams pivotally connected at their rear to the top of the A-frame, and at their front to the for` wardly-eXtending beams ot' the crane, the bottom of said forward beams being connected to a swinging circle open at its centerand rotatably mounted on said moving base, a dipper having dip per-arms operatively supported between the top beams of the crane, means to operate and control the raising and lowering of said dipper, means to automatically open the bottom when the dipper is up in position to dump, a trough between the forward arms extending down to the central opening in said circle, a false sliding bottom in said trough connected to means for raising the same when the dipper is drawn up, a conveyer below said opening in the circle to carry the deposit of the dipper to one side, means to swing said crane and means to operate said conveyer, substantially as described.

7. A steam shovel and dredge comprising a crane and an A 'supportingframe therefor, a dipper anda trough supported on said crane, a conveyer located beneath the end of said trough, means to raise said dipper above said trough, and means to automatically open the bottom of said dipper to deposit its contents in said trough when the dipper is raised to dumping position, substantially as described.

8. A conveyer for steam shovels and dredges, comprising an endless belt, and a single chain connected at intervals to the center of the belt by clips attached to cleats on said belt, substantially as described.

Vitness my hand to the foregoing specification this 26th day of July, 1897.

oTIs T. JoNEs.

Witnesses:

C. H. HENDERSON, EMIL ScHApIBLn.

IOO

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