US371568A - Dumping mechanism for hoisting apparatus - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

W. H. EWING.

DUMPING MECHANISM FOR HOISTING APPARATUS. No. 371,568. Patented Oct. 18, 1887.

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(No Model.) 3 Sheets-Sheet 2.

W. H. EWING.

DUMPING MECHANISM FOR HOISTING APPARATUS. No. 371,568. Patented Oct. 18, 1887.

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(No Model.) 3 $heetsSheet 3.

W. H. EWING.

DUMPING MECHANISM FOR HOISTING APPARATUS. I No. 371,568. Patented Oct. 18,1887.

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UNITED STATES PATENT OFFICE.

WILLIAM HENRY EWING, OF PORT ROYAL, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO DANIEL MOGARRY AND JEROME B. ZERBE, BOTH OF CLEVELAND, OHIO.

DUMPING MECHANISM FOR HOISTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 371,568, dated October 18, 1867.

Application filed July 19, 1887. Serial No. 214.723.

To all whom it may concern:

Be it known that I, \VILLIAM HENRY Ew- ING, of Port Royal, in the county of Juniata and State of Pennsylvania, have invented certain new and useful Improvements in Dump ing Mechanism for Hoisting Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to to which it pertains to make and use the same. My invention relates to improvements in dumping mechanism for hoisting apparatus, designed more especially for dumping coalcars as the latter are elevated from the mine, in which sections of the ways on which the hoisting-cage operates are pivoted at the lower end thereof and made to swing outward by gravity of the cage and loaded car to dump the latter when the hoisting-cable shall have been slacked off for the purpose, gravity stops be- 1ng arranged to hold the cage pending the dumping operation,and the draft of the cable, after the car is dumped, causing the ways to return to their upright position, carrying the car and cage back in position for descending the shaft, to the end that such dumping is effected automatically.

My invention also relatts to details of construction, hereinafter described and claimed. In the accompanying drawings, Figure 1 is a front elevation. Figs. 2 and 3 are side elevations, partly in section, the former showing the cage and car in the inclined position for dumping, the latter showing the position of 5 parts with the cage descending the shaft.

A suitable frame work is had over the shaft-for instance, as shown. Such framework maybevaried accordingto circumstances. The frame-work A is for a double shaft, but

0 this is not material.

B are the ways on'which the hoisting-cage 0 travels, and B are vibrating sections of the ways, the latter being pivoted to the former at b. An open frame, B consisting of cross- 5 bars I) and tie-bars b",is rigidly secured to seetion B, approximately at right angles to the latter, the internal dimensions of this frame being such as to admit the passage of the cage No model.)

without contact. Along the sides of frame B are arranged tilting frames D, that form grav- 0 ity-stops to hold the cage while the car is being dumped. A preferable construction of these stops is as follows: Arms D are made fast to large rods or shafts d and d, the former shaft being journaled in boxes D. Stops d the latter being usually integral with boxes D", are bad for limiting the inward movement of frames D. Arms D are connected rigidly with frames D, these arms extending inward, with cords d attached to the free ends of these arms for elevating the latter in swinging the frames D outward. The cords d" are usually spliced together, so that a single cord in the hands of the operator is to operate both frames D. This cord,1eading over suitable sheaves,is 6 extended to the engine-room, or to wherever the operator is stationed. The weight of arms D is sufficient to swing the frames D inward against stops d, such normal position of parts being shown in Fig. 2.

The hoistingcage may in the main be of ordinary construction, having a platform, 0, with track-rails O" for receiving the car E, together with corner-posts c and gibs c, the latter for embracing and traveling on the ways. Chains c are usually employed, said chains being connected with the respective cornerposts of the cage and connected at the other end thereof with the hoisting cable F. Sometimes the hoistingcable is connected direct with the cross-beam of the cage. A strong flat spring, H, is attached to the platform of the cage, an edge view of the spring being shown in Fig. 3. The spring has a downward Ushaped'bend, H, for engaging the car axle to hold the car in place on the platform while the car is being elevated and dumped. The spring is provided with inclines h and h, that engage the car-axle and depress the spring in running the car onto the cage, the recoil of 0 the spring locking the car when an axle registers with the bend H.

The operator, by placing a foot on the free end of the spring, can depress the latter to release the car-axle when it is desired to run the 5 car off of the cage--for instance, at the bottom or at one of the landings in the mine. Astop ofsome kind is had to limit the forward movement of way-sections B. The one shown,and suitable for a double shaft, is as follows: The two inside sectional ways, B, are blocked apart farenough to pass astride the beam A. The latter, together with beam A projects far enough forward to receive the standard A and the latter, by engaging the block 0 limits the forward movement of way-sections B. Various other arrangements of stops for this purpose would answer just as well. An apron, G, is arranged on the front side of the shaft to receive the coal dumped from car E. The car is of ordinary construction, having an end-gate, E, hinged above, so as to swing ontward, and a latch, e, for securing the end-gate in its closed position. The one end of the latch is made to engage an incline, g, and unlatch the end-gate when the car is moved forward for dumping.

In operating the device the cage, in moving up through the frame 13 engages frames D and swings these frames back out of the way to the position shown in Fig. 3, and as soon as the cage has passed these frames D the latter, by gravity, swing inward under the cage,

and as the cable is slacked off the cage rests upon frames D. Either the cage is set a trifle forward of the center of gravity on the ways or the spring H is arranged to hold the car forward of the center of gravity on the cage. Either or both will answer thepurpose, so that the way-sections B, when the cage and load are in position thereon, will tilt forward by gravity when the cable is slacked off. After the load is dumped the draft ofthe hoisting-cable brings the tilted parts to an uprightposition and elevates the cage from itsseat on the frames D. The operator then draws on the cords d thereby tilting frames 1) outward to the position shown in Fig. 3, and holds onto the cord while lowering the cage past the frames D, after which the cord is released and the frames D returned to their normal position. The hoistingcable is so connected with the cage that the cable is directly over the center of gravity of the cage and load, and therefore no extra friction is caused on the ways by reasouof the ways not'corresponding with the central vertical plane of the cage, or of the load being placed nearer the, forward side of the cage. The waysections B, being supported on pivots, turn forward easily, and if the cage were hung on the ways forward of the center, or the car were placed forward of the center of the platform of the cage far enough to cause the parts to swing forward by gravity, as aforesaid, such variation from the center line would be so slight as not to be perceptible in the drawings. The device is simple, durable, and effective, and by reason of such automatic dumping of the load at least one mans labor is dispensed with.

What I claim is 1. In a hoisting and dumping apparatus, the combination, with a hoisting cage and ways, the latter having vibrating sections, of an open frame connected with the vibrating sections and adapted to normally rest in position to receive the cage and hold the latter while dnm ping, substantially as set forth.

2. In hoisting and dumping apparatus, the combination, wit-h a hoisting cage and ways, the latter composed partly of vibrating sections, and a gravity-stop adapted to normally rest in position to receive and hold the cage when elevated, of apair of cables, one for hoisting and lowering the eageand the other for throwing the gravity-stops out of the track of the cage, substantially as set forth.

3. The combination, with a hoisting-cage and vibrating way-sections, of an open frame connected with the vibrating way-sections, said open frame having stops attached for holding the cage pending the dumping, substantially as set forth.

4. The combination, with a hoisting-cage,'

vibrating way-sections,and an openframe eonnectcd with thelatter, of atilting framehinged to the said open frame, stops for limiting the inward movement of the tilting frame, and levers and cords for swinging the frames outward, substantially as set forth.

5. The combination, with hoisting=cage and vibrating waysections made to swing laterally by the gravity of the load, of gravitystops for engaging the cage to hold the latter pending the dumping, and levers and cords arranged, substantially as indicated, for opening the gravity-stops to allow the cage to descend, substantially as set forth.

6. The combination, with hoisting-cage, vibrating waysections, and an open frame for permitting the passage of the cage, said open frame being secured to the vibrating way-sections, of an upwardly-projecting tilting frame, the latter being hinged or pivoted to the said open frame-work in position to be moved outward by engaging the cage in the upward movement of the latter, said swinging frames having inwardly-projecting levers attached thereto for tilting the frames inward by gravity of the levers, and cords attached to the free ends of the levers for moving the tilting frame outward to allow the cage to descend, substantially as set forth.

In testimony whereof I sign this specification, in the presence of two witnesses, this 6th day of July, 1887.

WILLIAM HENRY EWVING.

Vitnesses:

ALVA P. DOUGLAS, W; G. Muse.

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