US1083551A

US1083551A - Fireproof shutter or curtain.

Info

Publication number: US1083551A
Application number: US49227309A
Authority: US
Inventors: Edward H Mccloud
Original assignee: Kinnear Manufacturing Co
Current assignee: Kinnear Manufacturing Co
Priority date: 1909-04-26
Filing date: 1909-04-26
Publication date: 1914-01-06
Anticipated expiration: 1931-01-06

Description

E. H. MGGLOUD.-

PIREPRGOP SHUTTER 0R CURTAIN.

APPLICATION FILED APR.2@, 1909.

1,083,551 o Patented Jan.6,1914.

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UNITED STATES PATENT OFFICE.l

EDWARD, H. MGCLQUD, OF COLUMBUS, QHIO, ASSIGNQR '61 THE KINNEAR. MANUEAC- TUBING COMBANY, OF GQLUMBUS, GHIO, A. CQRPOBATIGN 0E WEST VBGINA.

FIREP-RDOJ? SHUTTER 0R CURTAIN.

0 all whom 'it may concern Be it known that I, EDWARD H. MoCLoUD, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Fireproof Shutters or Curtains, of which the following is a specification.

This invention relatesA more particularly to a fire resisting shutter or curtain that, upon the occurrence of ire, is automatically released to close the opening in which it is installed. Such shutters or curtains arc usually kept wound up within a protecting hood ready to descendautomaticall upon the occurrence of fire; but it is nevertheless quite desirable that they be tested from time to time for the urpose of assurance of their operation at t e critical moment. Such shutters have been made so that they can be tested, but the means have been so located as to involve danger and much trouble in their testing.

The object of the present invention is to provide means. whereby such a shutter or curtain can be tested with little trouble and no danger, and the invention resides in the improved device hereinafter described and claimedkthe invention not being confined in its practical embodiment to precisely the details set forth and shown.

In the accompanying drawings in which.v as before indicated, but one embodiment of the invention is shown: Figure 1 illustrates in front elevation, the right hand end bracket of a shutter or curtain roller on which my invention is applied. Fig. 2 is an elevation of the right hand side of what is shown in Fig, 1 Fig. 3 is a view like Fig. 2 with the hood for the roller latching and releasing mechanism removed to expose said mechanism. Fig. 4 is. a horizontal section on the line mx Fig. 3.' Fig. 5 is a vertical section on the line g/-1, Fi 1, looking to the left, but showing in addition to what is shown in Fig. l, the shutter or curtain channel and the manipulating means for operating the roller and releasing devices.

Like characters of reference in the several views designate corresponding parts.

rThe character 6 designates theshutter or curtain roller. It will be understood Jthat this roller in practice has attached to its outer side in a suitable manner, a suitable flexible fire resisting curtain that can be Specification of Letters Batent.

Application filed April 26, 1909.

FatentedJan. 6, 1.914.

Serial No. 492,273.

coiled up on the exterior of the roller.

.Where the shutter or curtain is heavy, it is provided, with the usual counterbalancing sprin as indicated at 7 to prevent its violent 'escent upon the release of the roller.

8 designates a shaft suitably Xed in the end of t e roller and journaled in the end bracket 9. The end of the shaft, 8, extends beyond the outer face of the bracket, and has fixed to it a wheel, 10, having projections, 11, on its rim. Pivoted at 12 is one end of a latching lever, 13. The lever, 13, h as near its middle a projection, 14C, adapted to engage one of theseveral rirojections or teeth, 1/1, of the wheel, 10, and at, its end an anti-friction roller, 15. Below the lever, 1,3, in the outer face of the bracketis a stop, 16, adapted to limit the downward movement of the lever and hold it in a particular posi-- tion.

17 designates another lever pivoted at 18 on the outer face of lthe bracket. The

levers

13 and 17 are so ivoted that when they are in substantial alinement and extended toward each other, they lap, the lever 17 lying under the lever 13, andl the lever 17 has a surface, 19, terminating in an abutment, Q0, the said surface, 19, being adapted, when the lever containing it is drawn upward, to. act on the roller, 15, and raise the lever, 13, into position to cause the projection, 14, to engage one of the teeth of the. wheel, 10,v and latch the wheel from rotation. Attached to the end of the lever, 17, is a flexible member in the form of a chain` 21. in which is interposed a readily fusible device or link, 22, near its point of connection with the lever, 17. Said chain is Passed inward toward the building in which the shutter or curtain is installed, thence through a hole, 23, at the lower inner corner of the bracket and finally downward in a vertical recess, 24, in rear of the curtain or shutter channel 25, next the inner side of the building. At its lower end the chain is provided'with a rod, 26, that is-passed through a vertical hole in a block, Q7, screwed inthe back of the recess by screws, 27a. The block, 27,', has an ordinary set screw, 28, for binding the rod in the position to which it is drawn down. The outer face of the end bracket, 9, is provided f with a hood or housing, 29, removably se cured by screws, 30, said hood being open at its lower end, but adapted to inclose the aforesaid mechanism on the face of the bracket, and therefore to keep it dry, and prevent the accumulation of ice and snow on it. The face of the hood 29 has a downward extension .29a that laterally incloses the chain 21 and its link 22.

In practice, and normally, the lever, 17, is kept held against the lever, 13, with the latter latchingly engaged with the wheel, 10. If it be desired to test the operativeness of the curtain or shutter, it is only necessary to releasethe set screw, 28, and consequently the rod, 26, thus liberating the levers, 13 and 17, (which fall by gravity) andthe curtain roller. This operation, it will be observed, may be performed from the interior of the building and without any danger of the descending curtainor shutter striking the operator. Then the shutter or curtain has a counterbalancing spring, it can usually be raised by merely pushing it up from' the interior of the building, and after the curtain is pushed up it may be relatched by drawing the chain and rod downward and relooking the rod with the set screw. 28. In drawing down the rod, it will be understood, of course, that the surface, 19, of the lever, 17, is drawn upward and acts on the roller, 15, so as to raise the lever, 13, into,position to have itsprojection, 14, extend into the path of the teeth or projections of the wheel, 10, and to engage one of the said teeth or projections, preventing the wheel, and therefore the curtain roller, from turning.

The device or link, 22, sho-uld be fusible by a dangerous rise of temperature in the vicinity of the shutter, such as would be occasioned by a nearby fire; and when such a rise of temperature takes place, the lever, 17, falls by gravity and thus automatically, in turn, liberates the lever. 13, which also falls by gravity, being impelled a little, perhaps, by the pressing of the inclined surface of the tooth of the wheel. In case of fire, the hood covering the mechanism because it is open at its lower end gathers or traps heated air and expedites the melting of the fusible link.

What I claim is:

l. In combination with the roller of a fire resisting shutter or curtainthe axis of which has a permanent position, a movable latching device for the roller and a movable device for moving said latching device to latching position, said latching device and device for moving the same being positioned when in released position with reference to each other for immediate action of the former by the latter, and thermally controlled means for operating the latching device moving means extending to a point remote from vsaid devices. y

2. In combination with the roller of a lire resisting shutter or curtain, a lever to latch the roller in the raised position of the shutter or curtain, a second lever fulcrumed to swing against the first mentioned lever when the latter is in normally released position to move the same to roller latching position,

resisting shutter or curtain the axis of which has a permanent position, a movable device fory latching thesame'in the raised position of the shutter or curtain, manually operable means extending to a point remote from the latching device for releasing the latching device from and restoring the same to rollerlatching position, and means in connection with said manually operable means fusible by a dangerous rise of temperature for automatically .releasing the latching device from roller latching position.

4. In combination with the roller of a ire resisting shuttenor curtain, a lever to latch the roller in the raised position ofthe shutter or curtain, av second lever fulcrumed to swing in the same plane as the rst mentioned lever swings to engage and actuate said first mentioned lever to move the same to roller latching position, means extending from said levers to a point remote from them for operating the levers, and means fusible by a dangerous rise of temperature for releasing said levers.

5. In combination with the roller of a fire resisting shutter or curtain, a lever to latch the -roller in the raised position of the shutter or curtain, a second lever fulcrumed to swing in the same plane as the first mentioned lever swings to engage and actuate said first mentioned lever to move the same to roller latching position, means extending from said levers to a point remote from them for, operating the levers, and means fusible by a dangerous rise of temperature in said means.

6. In combination with the roller of a re resisting shutter or curtain, a lever to latch the roller in the raised position of the Shutter or curtain, a second lever fulcrumed to swing in the same plane as the irstmentioned lever swings to engage and actuate said first mentioned lever to move the same to roller latching position, a flexible device to operate said levers extending to a point remote from the levers, and a device fusible by a dangerous rise of temperature to disconnect said flexible device from said levers to release the same.

7. In combination with the roller of a fire resisting shutter or curtain, a gravity lever to latch the roller in the raised position of the shutter or curtain, a second gravity lever fulcrumed to swing in the same plane as the first mentioned lever swings and to actuate the same and move the same to roller latching position, a flexible device connected with one of said levers and adapted'to cause the operation of the other to latch the roller, said ilexible device extending to a point remote from said levers, and `means for securing said flexible device with the roller latched, and a fusible device to release the levers by a dangerous rise'of temperature.

8. In combination with the roller of a fire resisting curtain or shutter, a lever to latch the roller,` a second lever located to be operated to move the first. mentioned lever to roller latching position, means to operate the second lever extending to a point remote therefrom, means fusible by a dangerous rise of temperature to release the levers, and a stop to detain the first mentioned lever after its release in position to be operated by the second mentioned lever.

9. In combination With the roller of a re resisting shutter or curtain, a device for latching the roller in the raised position of the shutter or curtain, thermally controlled means for releasing the same, a housing located above and laterally inclosing said thermally cont-rolled means for trapping heated air, said controlled means extending through'the housing to a point remote from the latching device.

10. In combination with the roller of a latchingthe roller in the raised position of the shutter or curtain, a housing to inclose said latching device, said housing also adapted to trap heated air, and flexible means extending to a point remote from the latching device for releasing and resetting said latching device Without removing the cover.

11. ln combination with the roller of a lire resisting shutter or curtain, a device for latching the roller in the raised position of the shutter orcurtain consisting of a pair of levers, one to operate on the other, and one serving as the latching means, an anti-friction roller on one of said levers between their points of Contact and means for releasing and resetting said latching means.

12. ln combination With a" re resisting shutter or curtain, a latching device for holding the shutter in raised position, a link fusible by a dangerous risevof temperature for releasing said latching device, and a housing extending below said link for trapping heated air.

EDWARD H. MCCLOUD.

Witnesses ALBERT RUSH, ANNA TEREsA KING.