US386490A - Fire shutter foe elevator shafts - Google Patents

Description

3 Sheets-Sheet 1.

(No Model.)

, A. G. PAGE.

7 FIRE SHUTTER FOR ELEVATOR SHAFTS. No. 386,490.

Patented July 24, 1888.

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Patented July 24, 1888.

INVENTDR, ,JM1Q Mfiiia (No Model.)

A. G. PAGE.

FIRE SHUTTER FOR ELEVATOR SHAPTS.

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(No Model.) 3 'sneetssheet 3. A. G. PAGE.

FIRE $HUTT-ER FOR ELEVATOR SHAPTS. No. 386,490. Patented July 24, 1888.

FIG. 4. 8*

ATTEET. INVENTDR.

NITED STATES PATENT FFICE.

ALBERT G. PAGE, OF SAN FRANCISCO, CALIFORNIA.

FIRE=SHUTTER FOR ELEVATOR-SHAFTS.

SPECIFICATION forming part of Letters Patent No.386,490, dated July 24, 1888.

Application filed September 20, 1887. Serial No. 250,193. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT G. PAGE, a citizen of the United States, residing in the city and county of San Francisco, in the State of California, have invented a new and useful ImprovementinFire-Shutters forElevator-Shafts, of which the following is a specification.

My invention relates to improvements in fire-shutters for elevator-shafts, which will be understood by reference to the accompanying drawings and the letters referring thereto.

Figure 1 is a sectional elevation cut vertically through the center and showing the shutters closed. Fig. 2 is a broken perspective view showing the operating and locki ng device. Fig. 3 is an enlarged broken sectional side elevation showing the shutters open. Fig. 4. isa broken side elevation showing the shutters partially open; and Fig. 5, a broken side ele- Vation showing the connections of the levers and thedoorsin a horizontal position, as when closed.

The following is the construction of my improved safety fire-trap for elevator-shafts.

1 construct the shutters of a strong durable material, generally of metal. I hinge the one to open upward and the other to open downward, and connect the operating parts so as to have the weight of one door balance the weight of the other in every position in opening and shutting the same. I employ such elevatorcages as are nowin use and the same means as are now in use for raising and lowering the same.

My device can be applied to any of the ele vators now in use. I generally construct all the operating parts of metal, principally of wrought-iron.

A and B represent the shutters. C and D represent the attaching projections or studs, to which the levers E and F are attached for the purpose of connecting with the shutters. G represents the lever which connects thelevers E and F by means of the hinges or joints A and X. The connecting-bar H is hinged to the double-armed trippiug-leverI and J at V. The short arm I has the slot M, to allow the motion of the lever K, which is fulcrumed at P. The lever K connects with the connectingbar Q at U. The connecting-bar Q connects with the upper tripping-lever, R, at T. The lever R is pivoted at S.

The deflecting guide-pulley M is attached to the pivoted bar L by the pivot N, which connects with the stud K for the purpose of connecting with the cage-standard J. The two-armed lever I J is hinged at T upon the stud O, which attaches to the main guide-rails. The pivots P, S, and Z are attached to the main rails H. The plates E, F, and N are designed to form solid attachments for the operating parts employed in opening and closing the slmtters.

0 represents astop-pin to preventthepivotbar L from removing beyond the required point.

The pivot-bar Q and guide-wheel R, attached to the floor of the cage I, are of the same construction and operate in the same manner as the guide-pulley M and pivoted bar L, as will be shown.

The following is the operation of my improved elevator fire-trap. The cage or elevator-car I being at the position shown in Fig. 1 and moving upward and the shutters above closed,as theguide-pulleyMstrikestheleverJ, swinging the same upon the fulcrum T, it carries the lower end of the lever Jout and up to the position shown in Fig. 3. As the lever I J is swung upward, it carries the connecting bar H upward and the bar Q downward. The slot M allows the pivot L, attached to the lever K. to slide while it rocks on the fulcrum P. The lever R is drawn down to the position shown in Fig. 3 at the same time that the shutters A and B are closed by means of the connecting-bar H, connecting-levers E and F, and the lever G, which is fulcru med at Z and connects the two shutters by means of'the connectinglevers E and F and thestuds C and D. It will be seen that as the cage passes up, the lovers J and R being in the positions shown in Fig. 3 and the shutters A and B being fully opened, the lovers E and F and the lever G are in line, bracing the same. As the cage passes on up, the guide-wheel R (shown in Figs. 1 and 4) strikes the lever R, carries the same up, reversing all the connected parts by drawing up the connectiugbar Q, thereby operating the lever K and throwing the lever I J down, drawing the connecting-bar down and closing the door 13 at the same time that the door A is closed by the connecting-bar Q. The operating parts then stand in the position ICO 1 shown in Fig. 1, where all the parts are firmly locked by being past the center, as is more plainly seen in Fig. 5. As the cagedescends, the wheel R strikes the lever B, thereby operating the connecting-bar Q, the leverK, the lever I J, the connecting-lever H, the lever G,

and the levers E and F, and opening theshut-' ters A and B to the position shown in Fig. 3, and as it passes on down the guide-pulley M strikes the lever I J, carrying the same down and operating the leverK, the connecting-bar Q, and lever B, the connecting-bar H, the lever G, the levers E and F, thereby closing the shutters Aand B after the cage I. Thus it will be seen that as soon as the cage has passed up ordown the doors close automatically and are firmly locked in position. The shutters A and B are fitted closely, filling all the area of the elevatoropenings through the floor, thereby preventing a current of air from pass ing up in case of a fire, and when the cage is either at the top or bottom of the elevator-passage the safety-shutters A and B are closed and a perfectly secure-floor is formed at every story of the building, thus preventing all danger of accident, such as dropping things down or persons falling down the elevator-shaft.

I do not confine myself tothe exact form of construction shown or the exact proportion of the parts,'as they may be varied without changing the principle of the invention; but,

Having thus described my invention, whatI claim, and desire to secure by Letters Patent,

arm I, with slot M, the connecting-bar H, the

lever G, the connecting-levers E and F, the lever K, the connecting-bar Q. and tripping lever B, for the purpose of balancing and op erating the shutters A and B, constructed,

connected, and operated substantially as and for the purposes set forth.

I ALBERT e. PAGE.

Vvitnesses:

J. H. REDsToNE, L. E. REDSTONE.

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