US1363985A - Lock for dumping-cages - Google Patents

Description

D. F. LEPLEY.

LOCK FOR DUNIPING CAGES.

APPL'lcATloN FILED 05015, 1919.

Patented Dee, 28, 1920.

2 SHEETS-SHEET 1.

:l v ep-Zelghuemtoi D. F. L'EPLEY.

LOCK FUR DUMPING'CAGES. APPLlcATIoN man Dc.15.1919.

e'lmantox I @Rouwen PATENT OFFICE.

DANIEL F. LEPLEY, OF CONNELLSVILLE, PENNSYLVANIA.

LOCK FOR DUIVIPINGr-CAGES.

Application filed December 15, l18919.

To all whom it may concern.'

Be it known that I, DANTEL F. LnrLnY, a citizen of the United States, residing at Connellsville, in the county of Fayette and State of Pennsylvania, have invented new and useful Locks for Dumping-Cages, of which the following is a specification.

rhis invention relates to locks for use in connection with dumping cages such as used in mine shafts.

lt is an object of the invention to provide a lock of this character which cannot be shifted accidentally, as by an object falling down the elevator shaft, and which can release the dumping cage only when the op erating member of the lock is given an upward movement by a means provided for that purpose.

A further object is to provide a lock which is positive in action and which, when in holding position, is securely fastened against release by jolts or vibrations to which the parts are subjected while the cage is in motion.

Another object is to provide mechanism of this character which is simple, durable and efiicient, and which can be applied readily to dumping cages without changing the structure thereof.

ll7ith the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts which will be hereinafter more fully described and pointed out in the claims, it being understood that various changes may be made in the construction and arrangement of parts without departing from the spirit or sacrificing any of the advantages of the invention as set forth in the appended claims.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings- Figure 1 is a side elevation of a portion of a dumping cage having the present improvements applied thereto, the dumping and tripping rails being shown by dotted lines.

Fig. 2 is a similar view showing the relative positions of the parts when the lock is in released position and the cage about to dump.

Fig. 3 is a plan view of the structure shown in Fig. l.

Fig. 4 is a front elevation thereof.

Referring to the figures by characters of reference l designates the upper portion of the frame of a cage and 2 designates the upper portion of the frame upstanding from Specification of Letters Patent.

Patented Dec. 28, 1920.

Serial No. 344,994.

the dumping platform of the cage. On this frame 2 is mounted a transverse shaft 3 carrying wheels t adapted, when the cage ap'- p'roaches the upper portion of the tipple, to enter between curved guide rails Gr and thus cause the platform, with its load, to tilt to delivering position. y

The locking mechanism includes a shaft 5 which is journaled on the frame l and is provided, preferably at its center, with a crank arm 6 which is forked and has a roller journaled therein and extending across the fork, as shown at 7. The shaft 5 is provided at one end with another arm 8 to which is connected a wheel 9 and this wheel is adapted, during the movement of the cage upwardly to dump-l ing position, to enter between guide rails R which are so shaped as to swing the arm inwardly over the cage toward a point above the shaft 5.

A bracket 10 is secured upon the frame 1 and journaled thereon is a bell-crank 11 one arm of which has a depending locking nose 12 adapted to extend over and into engagement with the frame 2 while the other arm thereof has an arcuate slot 13 through which the roller 7 extends, it being understood that this slotted arm extends into the forked arm 6.

The parts are so proportioned that, when the nose 12 is in locking position the roller 7 is seated in the upper end of the arcuate slot 13 and is held there by the weighty ofthe arm S and wheel 9. When the roller is thus located it is above a straight line extending from the pivot of the bell crank 11 to the center of the shaft 5. Furthermore, as shown in Fig. l, the slot 13 curves downwardly v away from the shaft 5*. Consequently the' lock cannot be accidentally released. Any weight dropped on the wheel 9 or arm 8 will merely tend to press the roller 7 more firmly against the upper end of slot 13. Upward pressure upon the nose 12 will not shift the nose because the curved wall of slot 13 will press against roller 7 along a line passing over the shaft 5 thereby binding the parts together. The only possible way to release the frame 2 from the locking nose 12 is by raising the arm 8 a sufficient distance to cause the roller 7 to travel downwardly in slot 13 and then push against the lower wall of the slot so as to raise the nose. This movement will only occur when the wheel comes against the deflecting rails R during the upward move- -ment of the cage and ust prior to the dump ing of the cage by the rails G and wheels 4. The parts will be positively re'e'ngaged during the downward movement of the cage immediately after the return of the cage platform to normal position by the rails G and wheels 4, the rails B operating to force the arm 8 downwardly and likewise force the arm 6 and bell crank l1 to normal positions, as iny Fig. l.

By the use of a lock such as described the danger of premature dumping of the cage and consequent wreckage of the apparatus or of the shaft or consequent fatalities, is entirely eliminated.

Vhat is claimed is l. A cage lock including a tiltably mounted locking lever, a crank arm, a combined weight and tripping arm movable with the crank arm, and slidably and pivotaly connected cooperating means upon the crank arm and locking lever for moving the locking lever into and out of holding position during the downward and upward movement respectively of the tripping arm and for fastening the locking lever in holding position.

2. A cage lock including a tiltably mounted locking lever, a crank arm, a slidable connection between the crank arm and the locking lever, and a combined weight and tripping arm movable with the crank arm for holding said Connection normally in position to hold the locking lever in fastening position.

3. A cage lock including a locking lever, a tripping lever, and slidably and pivotally connected means connecting the levers for forcing the locking lever to holding position when the tripping lever is swung in one direction, 'for fastening said locking lever in holding position, and for moving the locking lever to released position when the tripping lever is swung in the opposite direction.

4. A cage lock including a locking lever, a tripping lever, and means connecting the levers for forcing the locking lever to holding position when the tripping lever is swung downwardly, for securing the locking lever against movement out of holding position when subjected to pressure against the locking end thereof, and for moving the locking lever to released position when the tripping lever is swung upwardly.

5. A cage lock including a locking lever having an arcuate slot in one end portion, a tripping lever, a crank arm movable with the tripping lever and slidably mounted in the slot, said crank arm and the slotted portion of the locking lever cooperating to fasten the locking lever against movement to released position when subjected to pressure against its locking end.

6. A cage lock including a locking lever having an arcuate slot in one end portion and a locking nose at its other end, a tripping lever, means movable with the tripping lever for sliding within the slot, said tripping lever constituting means for holding the sliding means normally in the upper portion of the slot and the nose of the locking lever against upward movement out of engaging position when subjected to upward pressure.

7 A cage lock including a locking lever having an arcuate slot in one end portion and a locking nose at its other end, a shaft. a tripping lever and a crank extending from and movable with the shaft, means on the crank for sliding within the slot. said tripping lever being normally positioned by gravity to holding the sliding means within the upper portion of the slot and the nose of the locking lever against upward Inovement when subjected to upward pressure, and means for swinging the tripping lever' upwardly to shift the sliding means downwardly within the slot and raise the locking nose out of engaging position.

In testimony that I claim the foregoing as my own, I have hereto aiiXed my signature in the presence of two witnesses.

DANIEL F. LEPLEY.

l/Vitnesses W. H. SoissoN, BARNETT C. BURKHARDT.

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