US612261A - Freight and passenger elevator - Google Patents

Description

No. 6l2,26l. Patented Oct. II, [898. J. H. MOON.

FREIGHT AND PASSENGER ELEVATOR.

(Application filed June 11, 1897.)

(No Model.)

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UNITED STATES PATENT FFICE.

JOHN H. MOON, OF PORTLAND, OREGON.

FREIGHT AND PASSENGER ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 612,261, dated October 11, 1898.

Application filed June 11, 1897. Serial No. 640,401. (No model.)

To all whom, it may concern.-

I 7 Be it knownthat 1, JOHN H. MOON, of Portland, in the county of Multnomah and State of Oregon, have invented a new and useful Improvement in Freight and Passenger Elevators, of which the following is a specification.

My invention is an improvement in passenger and freight elevators having automatic safety brake or stop mechanism for arresting the cage the instant the hoisting-cable breaks.

The invention is hereinafter described and the novel features specifically indicated.

In the accompanying drawings, Figure 1 is a vertical section of the cage in connectionwith dilferent floors of a building and a guard or inclosure fixed on the lower floor around the hatchway. Fig. 2 is a detail view hereinafter referred to. Fig. 3 is-a detail section on line 3 3 of Fig. 1.

The body 1 of the cageA is supported and secured in an oblong rectangular frame composed of vertical bars 2 and shorter transverse 21, as shown. Vertical rods 22 are pivoted to the blocks 18 and to levers 23, Fig. 1, that are pivoted horizontally on the upper cagebar 3. The rope 28, which extendsto a counterbalance, (not shown is attached to a clevis 25, which passes around the top cross-beam 3 of the cage. Another clevis embraces clevis 25, and the latter has lengthwise slots in its parallel arms to receive the axle of a pulley 27 and allow a certain vertical play of the same. The hoisting-rope 26 passes around said pulley 27, and the links 24: connect its axle with the inner ends of the spring-levers 23. A normally-curved plate-spring 29 passes between the bottom portions of the two clevises 25 and 25 and is held fiat against the beam 3 when the cage is in normal operation by reason of the tension of the hoistingrope 26" on the clevis 25. In case the said rope should break the spring 29 will instantly draw the clevis 25" down, as shown by dotted lines, which is permitted by the slot in clevis 25, and thus the axle of pulley 27 forces the top and bottom bars 3 and 3. This frame is additionally braced by metal bars 36. The frame (1 and 2) surrounds or incloses the cage A at its middle vertically and slides on the central guide-beams 4 of the vertical elevator-frame B, which latter extends through the hatchways of the severalfloors or stories a a of the building. In this instance I show but two floors a a in the drawings; but it is to be understood that the number is not restricted. On each floor is a wire-and-panel inclosure O for the cage A, which is open on one slde.

The cage A is open at the same side and on the corresponding side of the frame B. In practice I provide vertically-slidable gates for the inclosure on each floor Ct ct.

The means for automatically braking and locking the cage A in case the hoisting-rope 26 breaks/are as followsi As shown, triangular steel blocks 18 are arranged at the lower truncated corners of the cage-frame (1 and 2) and provided with inclined teeth or prongs 19, which take into the frame-guides when the blocks are projected,as shown by dotted lines,

Fig. 2, but are out of contact therewith when.

the blocks 18 are retracted, as shown by full lines. The blocks 18 are connected with the cage-frame bars 1 and supported in due position by slotted links 20 and pins or screws links 24 downward, and the latter, acting-on levers 23, tilt the same, so that they draw the rods 22 upward, and thereby also draw up the toothed blocks 18, whose teeth, looking with the ways 4:, soon arrest the descent of the cage. The levers 23 are made elastic in order to break the otherwise too sudden shock of contact of the blocks 18 with the ways 4:. To lessen the shock of impact of the cage A at the limit of its up movement, it is provided with .a curved plate-spring 4.3. 51 indicates the ordinary pull cord or rope.

hat I claim is The combination with one or more floors having hatchways and guards or inclosures arranged around the latter, elevator guidebeams, and a cage adapted to slide on the latter, of the clevis embracing the top cagebar, a spring arranged between the clevis and said bar, a hoisting-rope and its pulley attached to said hanger, links pivoted on the pulleyaxle which passes through the hanger, springlevers connected with said links, and pendent' rods and slidable blocks having projections for engaging the guide-frame, as shown and described.

JOHN H. MooN. I

Witnesses:

DAN MARX, JOHN F. CAPLES.

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