US102954A - peters - Google Patents

Description

. v [h2/mfom NAFETERS, PHOTO-LITHOGRAFHER, WASHINGTON D C A ication.

. corridors, both` as a `iioor of a building, showing xfor Vclosing stair and.` hat'chyivays, showing antigas este ena.

l JAMEsfH; Marinetti/5N, or INDIAivAPoLIs,` `nnuaire.-

i p Letters PatentNo..102,954,daied May 101870.Y l'

Schedule referred 'co these Letters Patent. and making part' cf the same.

I, JAMES MGKERAN, of Indianapolis, in the- `countyof Marion andState oi" Indiana, haveinvented certain Improvements inthe Mode of Operating the Shutters, Closing the Stairways,1latcl1ways, and Gorriders of Buildings, of `which the following is a speci- Nature and 4Objects of the Ivenlz'on. A My invention relates to the construction and inode i of operating horizontal "shutters over stairways and hatehways, and Vertical shutters across the-corridors of buildings; and i i It consistsin the arrangement of chains or cords at- I tached to the shutters in `such a manner that said cords, being wound upon drums on a vertical vshaft sitnated in proper positi0n,and extending throughout any desired number of stories of the building, so thatv the"shutters 'of 'either stairways, vhatchways, or corri# v` dors of all the doors may be operated simultaneously,

or each one may be operated separately, as may be desired, the object being to provide a ready means of closing-the openings in" the `several floors and halls or preventive to theloss of life and the extension of lires. i

Description of the Accompanying, Drawings. 1 Figure 1 is a vertical section through a building, taken transversely of the corridory inwhich Vthe stairand hatchways Ain the several floors, and also the corridors are -furnished with shutters that are operated by means of the device embodying my invention.V

Figure 2 is a horizontal section or plan view of a a stairway and corridor furnished `with shutters thatare operated by means of my device. y i Figure 3v is ardetail view of theV horizontal shutter ore clearly the-means employed for operating them. A Figure 4 is a vertical. transverse view of the corri dor of a building, showing the shutter for closing it, and the arrangement of. the cords and pulleys Afor operatingtheshutter. I y i y Figure 5 is a detail view ofthe drum and a portion of the vertical shaft by means of which the cords orchains are wound andthe' shutters areoperated.

Figure is au inverted viewof the shutters employed to cover the stairand hatchways.`

Figures 7 and 8 are detail viewsof the trnckson which the shutters aresupportd and run. l

. General Descrtgm'on.

the under side, and horizontal friction-rollers, e, in the ends, so arranged that the shutters will move freely,`

with slight force applied to the wheel-cranks G.

The shutters are' made as ninch longer than the opening'as is necessary to provide room to attach the rollers vB, so that they will run outside of the opening.

The shutters maybe let intoa recess inthe floor, Y so as to be flush with thev upper surface thereof', and

should be made to t to -theedges of the recess sui- "eiently close to prevent a draught of air through them when closed.

Tooperate the 'shutters A l'attach a cord, O, to the angle-iron at the rear edge of the shutter, and

carry it forwardaround thc sheave or pulley D,'and.

from thence to one side of drumE on` the vertical shaft E; also,` a cord, C', to the angle-iron at thc front edge of the shutter, which passes over the sheave D and under pulley d, to bring it in proper position to the opposite side of drum E.v When necessary to turn angles, as shown in gs. 2 and '3, the cords are'taken around horizontal pulleys H.

The sheaves D D are sosituated and arranged that they, and also the cords O C', Aare protected from exposure and liability to injury by being walked over.`

The vertical shaft F extendsvthrough any desired number of stories of the building, and is furnished with crank-wheels G, by which to turn it eithento the right or left, as may be desired, to` open or -close the s hutp ters, and is made in sections that are coupled together at each door by a sliding or adjustable coupling, J, so arranged that the sections of. the shaft in any story may be coupled with or uncoupled` from `the lsection above or below itz so that the shutters of either floor or story `may be operated separately, or the shutters of all the -oors maybe operated simultaneously, as may be desired.

I are guide-arms, Y attached to a nut, c, working freely on a screw-thread eut on the shaft F. These `arms have eyes at their outer ends through which the cords C C pass, and are Adesigned to lay the cords properly on the drums E as they are wound up, either in opening or closing the shutter, and also to prevent the cords'frm slipping off the drum in case theyvbecome slack.

The anti-friction rollers B are constructed and arranged in nests of five each, as shown in figs. 7 and 8, and are attached to the corners of the shutters A,las shown in g. 6. Similar trucks are attached to the corners of the bottom edge of tlievert-ical'shutters K.

Vertical shutters K, arranged to close the corridors or passagesthrough buildings, may be i operatedV in a similar manner, as shown in fig. 4.

.The advantages claimed for-the construction, arrangement, mode of operating the shutters of-stair and hatchways and corridors of 'buildings as herein described are, that the shutters being arranged so as to. be very conveniently closed, either singly or on any floor, or throughout the entire building simultaneously, as may be desired, the hatchesare more likely to be closed afterbeing used during the day, thereby avoiding injury or loss of life by persons falling through them, as too often occurs, and also serving as a ready means of shutting ofi' draughts of air through the buildings in case of fire, thereby preventing loss of property, besides beiug a great security aganstthc spread of fires, by having the stairs, hatches, and corridors closed at. night, as the labor of closing one is little'less than closing all the stairs, hatches, and corridors in abnilding.

Claims.

I claim as my invention- 1. The arrangement of the cords or chains C G',at tached to the shutters A and K, in combination with the sheaves or pulleys D D', d, and H, drum E, and vertical shaft F, substantially as and for the purpose set forth.

2. The vertical shaft F, provided with the drum E, crank-wheels G, coupling J, and guide-arms I, attached to a nut a, all constructed and arranged substantially as and for the purpose set forth.

,J AMES H. MCKERNAN.

Witnesses:

O. F. MAYHEW, G. A. Summa.

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