US317564A - Elevator-hatchway guard - Google Patents

Description

(No Model.)

W. S. MORTON.

ELEVATOR HATGHWAY GUARD.

No. 317,564. Patented May l2, 1885.

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NTTED STATES PATENT OFFICE.

' WALTER SCOTT MORTON, OF ST. PAUL, MINNESOTA.

ELEVATORfHATCHWAY GUARD.

SPECFCATION forming part of Letters Patent No. 317,564, dated May l2, 1885. .ampliacion niedrctruary 9, 1585. (No model.)

To @ZZ whom it may concern,.-

Be it known that I, WALTER SCOTT MoR- TON, a citizen of the United States, and a resident of St. Paul, in the county of Ramsey, in the State of Minnesota-'have invented certain new and useful Improvements in Elevator-Hatchway Guards, of which the following is a specication.

Figurel is a sectional side view, Fig. 2 is a sectional front view, and Fig. 3 is a sectional plan view, of a portion of an elevator, showing the manner of attaching my improvement to the hatchways. Fig. 4- represents a detail of the angular lever, showing its position when the guard or door is elevated. Fig. 5 is a partial front view similar to Fig 2, showing the guard partially raised.

This invention relates to hoisting-elevators, and more especially to that class used in manufacturing and mercantile buildings for transfering goods from iloor to floor; and it consists in a gate, door, or bar adapted to be automatically raised and lowered across the entrance of the hatchways by the elevator-platform when running up and down.

A2 is one of the floors of a building having a hatchway, B2.

C C2 are the guide-timbers between which the platform or cage runs up anddown. This cage or platform usually consists of a floor, D', side pieces or uprights, D2 D3, and top cross-piece, D4, to the latter of which the hoisting-cable D5 is connected.

The hatchways are left open, and the only guard required is agate or bar dropped across the entrance. These gates or bars are hinged at one end and raised by the other end.

The gate or guard consists in a bar, E', pivoted in an upright post, E2, at one corner of the hatchway B2, and adapted to rest by its other end in a notch or open slot in the top of another post, E3, attached at the opposite corner of the hatchway, as shown. An angular lever is pivoted at a to a bracket or hanger, a?, on one of the guides, O or O2, or to some other fixed part ofthe building, this lever having a short upwardly and backwardly trending arm, F, and a longer substantially horizontal arm, F", as shown. One of these levers F F2 will be attached to the elevator at each floor; but as they all operate precisely alike a description of one will be sufcient. The short arm F has a small friction-roller, b, in its outer end in close proximity to one of the uprights, DZ or D3, the latter having a trip-plate, D, attached to it, as shown. To the outer end of the long arm F2 one end of a cord or small wire cable, d', is attached, and which then passes upward over a pulley, d2, and thence downward and is 6o attached to one end of a lever, G. The other end of the lever G' is pivoted at e to the bar E', lying, when the bar E is horizontal, at

about an angle of forty-live degrees, as shown in Fig. 2. The lower end of this lever G', 65 near the cord d', is provided with a frictionpulley, h, adapted to run up and down in contact with the post El, as hereinafter shown.

E* are small bars, pivoted at regular intervals by their upper ends in the bar E', and 7o each pivoted by its lower end in another bar, E5, parallel with the bar E', as shown. By this means, when the bar E is resting in its horizontal position, as shown in Fig.

2, the bars E4 will hang down perpendic- 75 ularly, and the bar FP will lie horizontally and parallel with the bar E', the whole forming a gate across the entrance to the hatchway.

When the gate is in the position shown in 8o Fig. 2, the levers F F2 and G will be in the position shown in Figs. l and 2. Then, when the elevator-platformis lowered or elevated, the inclined ends t" or of the trip-plate D6 striking the friction-roller b in the end of the 8 5 short arm F' of the trip-lever will raise it upward and depress the longer end, as shown in Fig. 4. The cord d will thus draw the lower end of the lever G (when the latter is used) upward along the post E2 and elevate the bar 9( E', as shown in Fig. 5. The gate is shown only partially elevated in Fig. 5 to render the drawing more clear and distinct; but as a matter of course it will be readily understood that the bar F/ will be turned up to a substantially perpendicular position, the bars F4L and EEl folding up against the bar E', and thus leaving the entrance to the hatchway entirely unobstructed.

The trip-plate D6 will be so placed with refroo erence to the lever F F2 and the latter so arranged relative to the gate that the gate will be elevated to its perpendicular position when the floor D of the cage is even with the floor A of the building, the same rule also, of course, applying to the door N.

If the elevator-platform is running downward, then the lower inclined end, i2, of the trip-plate D6 will first strike the lever F and elevate the gate, the gate being held elevated when passing through a hatchway Where it does notvstop, then the gate is simply opened and closed again as the platform passes 2o through the incline t" or 2 vwhich is last in contact with the lever F F2, serving to check77 the downward motion ofthe gate and prevent its falling-too suddenly of its own weight.

2 5 Under some circumstances it might be found f advantageous I to reverse the lever F F2 and cause its long end to pull upward upon the lever G or the bar E', in which case the pulley d2 might be dispensed with'.

3o The long arm of the lever need not neces-l sarily be arranged so as to assume a substantially horizontal position,as above mentioned, but may be arranged in any suitable manner, so that the outer end of the long arm moves through a sufficient space to operate the gate ordoor.

When used in connection with elevators arranged to receive and discharge freight from two sides, then two sets of gates, doors,

and their tripping mechanisms may be used, or by a few additional pulleys and a longer cord two or more gates may be operated by one set of trips and levers.

Having thus described my invention, what I claim as new isl. An elevator-platform and a doubly-inclined trip-plate attached thereto, in combination with a gate-bar pivoted at one end to a suitable framework, a lever pivoted at one end to said gate-bar, a friction-pulley on the free end of said lever which travels on a xed vertical guide or way, an angular lever pivoted at its angle to a fixed frame, one arm of which lever engages with said trip-plate, and a cord which connects the other arm YV'of said lever with the lever which is pivoted to the gatebar, substantially as set forth.

2. An elevator-platform and a doubly-iu clined trip-plate, D,attached thereto, in combination with an upright post, E2, a gate-bar, E, pivoted thereto, a lever, G', pivoted at its upper end to said gate-bar and provided at its lower end with a friction-pulley, h, which is adaptedv to travel vertically on said post E2, an angular lever having arms F F2, pivted at its angle to a fixed part, one arm of which engages with said trip-plate, frictionpulley d2, and a cord passing over said pulley which connects the other arm of said angular llever with said lever G', substantially as set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

VALTER SCOTT MORTON. Witnesses:

R. B. WHITACRE, C. N. WooDwARD.

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