US391423A - Hoisting and conveying apparatus - Google Patents

Description

(No Model.) 2 Sheets-Sheet l. B. J. PLPASANCP. 8 P. A. PATTERSON. HOISTING AND CONVEYING APPARATUS. 180.891.428. Patented 008. z8, 1888.

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HOISTING AND GONVBYINGAPPARATUS. No. 391,423.

Pajsented Oct. 23, 1888.

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UNITED STATES PATENT Errea BENJAMIN J. PLEASANOE AND PETER A. PATTERSON, OF CLEVELAND, OHIO.

HOISTING AND CONVEYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 391,423, dated October 23, 1888.

n Application tiled November 7. 1987. Serial No. 254.550. (No model.)

To all whom it may concern:

Be it known that we, BENJAMIN J. PLEAs ANCE and PETER A. PATTERSON, ofGleveland, 1u the county of Cuyahoga and State ol' Ohio, have invented certain new and useful Improvements in Hoisting and Conveying Mechanism; and we 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 which it pertains to make and use the same.

Our invention relates to improvements in hoisting and conveying apparatus designed more especially for coal and ore trade; and it consists in certain features of constructionand in combination of parts hereinafter described,` and pointed out in the claims.

In the accompanying` drawings, Figure l is a side elevation. Fig. 2 is a plan of the cable system for hoisting and operating the carriers. Fig. 3 is a plan of the boom, the supportingchords being in section; and Fig. 4. is a side elevation, partly in section, of the same. Fig. 5 is a plan of the boom-hinge, and Fig. 6 is a side elevation of the same. Fig. 7 is a crosssection of the truss and track. Fig. Sis an enlarged sectional View through the carrier B; and Fig. 9 is a transverse section on line w x, Fig. 6.

A represents a suitable truss, to which are attached the track-rails A2, arranged in pairs, and on which tracks the respective wheel-carriers B and B travel. These carriers are supposed to be alike, but have different letters applied for convenience. A boom, C, extends from and is hinged to the one end of the truss, so that it may be raised or 1owered,as circumstances may require,in loading and unloading Vessels. The chords A of the truss are preferably of plate metal set edgewise, While the track-rails A'l may be of ordinary railroadiron set with their bases against the chords, to which the track-rails are secured on either side of the respective chords, so as to break joints with each other and with the sections of the chord.

F is the hoisting-cablc,and also operates the carriers. rlhe respective ends of the cable are attached to drums D and D. These drums are provided with the necessary gearing, fric tion-clutches, &c., for revolving the drums simultaneously at the same speed, and for reversing the drum, and for operating either drum independent ot the other drum. The gearing, clutches, for thus operating the drum are not shown; but such mechanism is well understood, and any of the several varieties already in use will answer the purpose.

From the driving-drum the cable,after passing over the necessary guiding-pulleysfor instance, as shown in Fig. l--runs over idlesheaveb, connected with each carrier, and from thence runs under sheave e, connected with bail E of the respective hoisting-buckets E. From the carriers the cable leads around a lateral wheel, c, located at the outer end of the boom. In fastening the cable to the respective carriers enough length of cable is left between the carriers to reach from the hoistingpoints around the lateral wheel to the dumping-point. Almostanydeviceforclamp ing the cable fast to the carrier will answer the purpose. The device shown, however, consists of blocks F,witl1 set-screws f, for press` ing the blocks onto the cable and pressing the cable into notches f2, made in the wall of the carrier. The buckets are flaring, as shown, and have heavy bottoms, and the balls E are pivoted to the sides of the buckets above the center of gravity of the bucket, by reason of which the loaded bucket, when left free, will tilt and dump by gravity,while the empty bucket will by gravity assume an upright position.

In operating the device, suppose carrier B,

Vwith a loaded bucket attached, is at the dumping-station, and carrier B', with an empty bucket, is at the loading-station, both buckets being in their elevated positions. By slack ing off the cable from drum D the loaded bucket would be lowered and dumped,where upon drum D is stopped. By slacking off the cable from drum D the empty bucket would be lowered for loading. As soon as the bucket is loaded or a loaded bucket is substituted, as the case maybe, by reversing drum D the dump-bucket is drawn up against the carrier B, and by reversing drum Dthe loaded bucket is drawn up against the carrier B', after which, by continuing the movement of drum Dand slacking oft the cable from drum D, if the drums move at the same speed, the cable ICO will bekept taut, holding the buckets against their respective carriers, and carrier B will be drawn to the dumping-station simultaneously with carrier B reaching the loadingstation. The lowering of the empty bucket at the loadinglstation may be done while the loaded bucket is being lowered and dumped at the dumping-station. The tracks converge on the boom, the inner tracks crossing each other, as shown in Fig.'3, so that when theend c of the boorn is reached the carriers from thc different tracks are approximately in the same position over thehold ofthe vessel. The boom may be raised or lowered from a horizontal position to bring the buckets in the d esired position crosswise of the vessel. As such Variation ofthe boom would cause angles in the line ofthe track-rails,we provide short track-sections a, a', and t. (See Figs. 5 and 6.) rlhese short track-sections are usually of cast metal and extend from one track to the other of the same chord, forming a section or4 part of cach of the tracks. These track-scc tions are jointed together, being made with interlocking ends secured by pintle co3. Bails A3 connect with two of these pintles of each set ot tracks, as shown, the bails being placed astride the chords, each bail having a setscrew, A, abutting the upper edge of the chord, by means of which the bails may be raised or lowered a limited distance, thereby raising or lowering the connected joints ofthe track-sectionsa, a, and a2. Section ais jointed to the contiguous stationary track-rail, and section d2 is made wedge-shaped and rests on the correspondingly wedge-shaped end of the adjacent track-rail. By means of the balls and set-screws just described these track-sections may be adjusted to divide the angle of the track caused by raising or lowering` the boom at four points, so that the carrier-wheels will run smoothly past the axis of the boom. Arms H are located beneath the cable to receive and hold the saine when any slack is produced.

Wlhat wc claim is l. rlhe combination, with double tracks and a pivoted'booin having tracks thereon converging at the one end to substantially a common hoisting-station, of carriers for traveling on the respective tracks, a cable adjustably secured to the respective carriers, drums connected with the ends ofv the cable for operating the latter, and a lateral wheel set at the terminus opposite the drum for supporting the cable, substantially as set forth.

2. The combination, with a truss having double tracks thereon, of a booni hinged to one end of such truss to swing in a vertical plane, said tracks converging on the boom to substantially a common hoisting-station, and a cable having carriers connected therewith, substantially as set forth.

3. The combination, with a truss and boom pivoted to the truss, of jointed track-sections adjacent tothe pivotal point of the booni and bails and set-screws,substantially as indicated, for adjusting such track-sections, whereby a continuous curve is formed in the track at the pivotal point of the boom when the latter is changed from a horizontal position, substantially as set forth.

In testimony whereof we sign this specilication, in the presence of two witnesses, this 2d day of June, 1887.

BENJAMIN J. PLEASANCE. PETER A. PATTERSON. Witnesses:

Crus. H. Doane, A manier E. LYNCH.

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