US603048A - I iii iii - Google Patents

Description

(No Model.) 4 6 Sheets-8116681,

J. RIGCT.

OSGILLATING TIPPLBR. No'. 603,048. "Patented A111226, 1898.

(No Model.) 6 Sheets-sheet 2.

J. RIGG.

OSGILLATING THPLBR.

No. 603,048. Patented Apr. 26, 18Q8.

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(No Model.) 6 Sheets-Sheet 3,

J. RIGG. OS-UILLATING TIPPLBR.

Patented Apr. 26, 1898.

INVENTOR ATTYS.

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J. RIGG. OSGILLATING TIPPLER.

No. 603,048. Patented Apr. 26, 1898.

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(No Model.) 6 Sheets-Sheet 5.- J. RGG. OSCILLATING TIPPLBR.

,048. Patented Apr. 26, 1898.

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, awa/p. Q41/ (No Model.) 6 Sheets-Sheet 6.

J. RIGG. OSCILLATING TIPPLBR.

No. 608,048. Patented Apr. 26, 1898 WnNEssss /er A TTYS,

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UNITED STATES PATENT 'reina JAMES RIGG, OF LONDON, ENGLAND.

osclLLATlNe TIPPLER.

SPECIFICATION forming part of Letters Patent No. 603,048, dated April 26, 1898.

Application filed August 13 1397. Serial No. 648,130. (No model.)

To @ZZ whom may concern:

Be it known that I, JAMES RIGG, a subject of the Queen of England, residing at London, England, have invented certain new and useful Improvements in or Relating to Oscillating Tipplers, of which the following is a speciiication.

This invention relates to improvements in connection with tipplers employed for discharging the load from box tubs or corves containing coal or other material, which improvements are applicable to tipplers constructed so as to oscillate as distinguished from those making a complete revolution or rotation either forward or backward, the advantages of this form of tippler being the diminished liability to breakage of the material, owing to the smaller fall which can be given the coal or other material tipped and the greater speed of working secured, since the arcs forming the path of the double oscillation amount together to only about threefourths of a complete revolution.

rlhe invention relates in the first place to the mechanism for operating the tippler when power is employed7 the object being to reduce the speed of travel of the mouth of the tippler as it approaches the delivery-point and accelerate its speed when returning to the vertical position after delivery, thus lessening the time occupied by each complete cycle of operation and enabling a larger number of tubs or eorves to be discharged in a given time, while allowing sufficient time for the tub to empty. This portion of the invention may be applied to oscillating tipplers either of the so-called throughway form, in which the loaded box tubs or corves enter through one side of the tippler and, after discharging the load over their side, pass out through the opposite side to that by which they entered, or to those of the end-tipping form, in which the tubs or oorves enter and rei urn over the same rails.

This invention effects a most important improvement in that the coal or other material is delivered `onto the belt or screen without any fall, a result impossible of attainment by the employment of any tippler making a complete revolution.

The invention further relates to improved methods of applying the brake when oscillating tipplers of the througliway form are worked by gravity alone. To prevent the discharge of any of the load before the tippler has reached the determined angle for delivery, the mouth of the tippler may be closed by a horizontal counterbalanced door.

In the accompanying drawings, Figure lis an end elevation showing a throughway tippler, operated by power, in the vertical position ready to commence the forward oscillation; and Fig. 2 is a side elevation of the apparatus shown in Fig. l. Fig. 3 is a diagrammatic view of a side tip in the vertical position. Fig. i is a similar View of the tip in its extreme forward position. Figs. 5, 6, and '7 are respectively an end view and diagrammat-ie side elevations of a power-driven end tippler; and Figs. 8 to 13 illustrate alternative forms according to this invention of applying the brake to throughway tipplers operating automatically under the influence of gravity.

Like letters indicate like parts in all figures.

Referring to Figs. l and 2, the throughway tippler may be of usual construction, comprising two rings A of cast or wrought iron or other metal and of a sufficient internal diameter to admit of the loaded box tub, tram, or corf entering freely. The rings are connected in the usual manner, and the tippier is fitted with railsA' for the tubs or corves and carried by rollers B C", two under each ring, and free to rotate upon the axes B O. A further roller is placed within each ring, so as to roll on the inner periphery of the ring and hold it down on the supporting-rollers B C. One of these two holdingdown rollers is shown at D journaled at D'. To the shaft B is affixed a spur-wheel B2, gearing with the toothed rack or segment A2, which is rigidly connected with the rings A. The wheel B2 is driven by the cog-wheel segment E through the medium of the pinion B3, which is rigidly fixed to the shaft B and gears with the segment E', which is carried by the shaft E. The shafts B C E are parallel to one another and to the axis of the tippler in this example and are all journaled on the frame F. l may, however, dispose these shafts in any convenient plane or planes by using bevel-wheels or like suitable mechanism to transmit the power. The segment E IOO derives its motion from a shaft G by means of a crank G', link H, and arm E2, the latter being keyed or otherwise attached to the shaft E. The shaft G is carried in bearings on the frame F and is preferably parallel to the shafts B C E and the axis of the tippler, the arrangement of gears being preferably in duplicatevl. e., one at each end of the tippler-so that each of the rings A is acted upon by the driving mechanism. The angle through which the tippler is rotated depends upon the relative lengths of the crank G', arm E2, and diameters of the segments E' and A2 and wheels B2 B3, and these may be selected accordingly; but in order that the tippler may receive a motion which is oscillatory about its axis as distinct from a rotation, or, in other Words, in order that the motion may be through less than three hundred and sixty degrees and the tippler be then returned to its original position, it is essential that the distance between the shafts E and G be greater than the length of the crank G. Gear of the proportions shown in the drawings would give good results. Motion is derived from the wheel G2, which runs freely on the spindle G, but maybe coupled or released at will to or from the spindle G by a suitable clutch, power being supplied to the wheel G2 in any suitable manner.

The corf or tub enters the tippler when it and its parts and the various portions of the gear are in the relative positions shown in Fig. 3, and by the continued rotation of the shaft G in the direction indicated by the arrow Q the parts will be brought into the position shown in Fig. 4, and further rotation of the shaft G in the same direction returns the tippler and gear to the positions shown in Fig. 3. Further, the angular speed of oscillation given to the tip by gear of this description varies in the following manner: Starting from the position shown in Fig. 3, the speed is somewhat rapid and continues so during about the first half-revolution of the crank G', becoming slower toward the end of such movement and being very slow during the third quarter-revolution of the crank G', at or at about the completion of which the tip has reached its limit of oscillation, as shown in Fig. 4. During the remaining quarterrevolution of the crank G' the tip is returned to its initial position at a relatively high speed, as hereinafter described. This completes the cycle of operations of the gear. The empty corf or tub is removed and its place taken by a full one. A plate A3 eX- tends for the greater part of the length of the tip in the position shown, its object being to receive and check the fall of such mineral as leaves the tub early in the oscillation of the tip. As the oscillation continues the contents of the tub are received by this plate A3 and a counterbalanced door A4, pivoted at A5, which closes the mouth of the tip and retains the coal or other mineral until practically the completion of the forward oscillation, when the door, receiving almost the entire weight of the charge, yields and permits the material to escape without a fall onto the screen, conveyer-belt, or other receiving device provided. The screen or the like can be placed in such a position that the mineral is deposited thereon Without any fall, as the tip does not make a complete revolution,and the clearance which would have been thereby necessitated need not be provided.

In order that the movement of the tippler actuated by the gearing hereinbefore described maybe thoroughly understood, it will now be described in full detail with reference to Figs. 3 and 4.

The corf enters when the tip `is in the position shown in Fig. 3, the parts of gear being in the relative positions shown by full lines, the pin of the arm E2 being at e and the pin of the crank G' at g. The path of this latter is shown as adotted circle g g g2 g3. As the crank revolves ata uniform rate the pin g occupies approximately equal periods of time in passing from any one of the positions g g' g2 g3 to that next in advance. The pin e therefore occupies equal times in passing from e to e', e' to e2, and e2 to e3, and the mouth of the tippler moves similarly from a to c', c to a2, and a2 to a3. The remaining quarterrevolution of the crank G' is occupied, as already described, in returning the tip to its normal position. The time occupied by the return movement of the mouth of the tippler is equally divided between the positions c3, a4, a5, and a, as will be clear from Fig. 4, the corresponding positions of the crank-pin g and the pin e being marked 93.63, g4 e4, g5 e5, and g e, respectively.

The variations of speed of an end tip, when actuated by gear of the kind described, are shown in a similar manner by means of dotted lines in Figs. 6 and 7, the explanation just given applying equally'well to these two iigures. The counterbalanced door also plays an important part, as above described, in securing the avoidance of any fall of the mineral from tippler to screen.

In Figs. 5, 6, and 7 the gearing by which 'the tippler is operated is substantially the same as that shown in Figs. 3 and 4 for the operation of the side tippler, and like parts having like letters of reference attached no explanation is required. The tip is, however, mounted on bearings instead of rollers, as in the case of the side tip, and the toothed segment E' fixed in the position and operating as shown instead of as in Figs. land 2in order to illustrate an alternative construction.

In Figs. S to 10, inclusive, the tippler shown is of the throughway type, the actuating force being gravity, which causes the forward oscillation, owing to the disposition of the rails, whereby the center of gravity of the system when the loaded tub enters is placed out of the vertical center line S S and, as viewed in Figs. 8 and l0, to the right of said line. The tippler is provided at A4 with a IIC IIS

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balanced door similar to that described in connection with Figs. 1 and 2. The forward oscillation having been effected and the mineral discharged the position of the center of gravity is ot' course changed, and the balanceweight K is so proportioned and placed as to insure that when the tub is empty the center of gravity shall be in such a position that the ti ppler is returned by the force of gravity to its former or upright position. The rapidity of movement, both in the forward oscillation and return, is controlled by the banksman in charge of the tippler by means of a brake.

In Figs. S and 9 the controlling mechanism comprises a rack A2, which eiects the rotation of a brake-Wheel L, to which any suitable brake may be applied by the banksman.

In Figs. 10 and 11 is shown an alternative method ley-Which the brakingaction is applied to a groove or grooves A6, the brake being applied either by means of a friction roller or rollers N or by a shoe or shoes N', as in Figs. 12 and 13. Such application of the brake to grooves obviates the necessity for or use of the retaining-rollers, such as D.

An automatic throw-o or locking device may be added, the former to the power-driven and the latter to the gravity-tippler. One form of such device is shown by Way of illustration in Figs. 1 and 2 as applied to a throughway power-driven tippler.

A friction-clutch is provided at G3, adapted to couple the crank to the source of power. This clutch is operated by a hand-lever F2 under the control of a banksman. The ring A is provided with a projection A7, which comes into contact with a roller f2 ou the hand-lever, and on the return of the tippler to its normal position the roller f2 is struck by the projection A7 and assisted bya spring F3, which alone may be insniiicient, throws the lever Fzinto the position shown in full lines, and so stops the rotation of the crank G. To start the tip, the banksman has to move the lever F2 into the position shown in dotted lines, Fig. 2, where he holds it until the tippler has returned to its original position, When, should he neglect to Withdraw the clutch-lever, it Will be thrown out by the projection A7. To render the action of the projection A7 more certain, I may insert a piece of india-rubber at F' to permit the return motion of the tippler to slightly exceed its normal limit.

In the case of a gravity-tippler the clutch may be replaced by a retaining device adapted to hold the tippler inthe normal position and release it at the Will of the banlrsman.

I claim- 1. The combination with a tippler, of a crank, a link and an oscillating member arranged to give it a varying speed of oscillation, substantially as described.

2. An automatically operating balanced throughway oscillating side tippler having a counterbalanced door the oscillation being controlled by a brake-Wheel and spur or friction gear as shown.

3. An automaticallyoperating balanced throughway oscillating side tippler having a counterbalanced door the oscillation being controlled by a brake.

4. In combination with an oscillating tippler, a counterbalanced door carried thereby, substantially as described.

5. In combination With an oscillating tippler, a plate A3 and a connterbalanced door, substantially as described.

In witness whereof I hereto set my hand in the presence of the tivo subscribing witnesses.

JAMES RIGG.

Witnesses:

WALTER J. SKERTEN, W. J. NoRWoon.

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