US1029912A - Fire-door. - Google Patents

Description

Patented June 18, 1912.

vu.. 9 1 l l, s am N U IBA u? E ODM 2||||| CEF .EN EPO .n Z7 T A 7 0 I L P P A ,11311/111111 11111111111115111111 1111l111111111/1111111/111151/11111511111111111111?911 1 1F11! l NIE ST THOMAS E. COLLINS, OF CHICAGO, ILLINOIS.

FIRE-DOOR.

Specification of Letters Patent.

Patented J une 18, 1912.

Application filed August 1, 1910. Serial No. 574,861.

To all whom t may concern Be it known that I, THOMAS E. COLLINS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Fire-Doors, of which the following is a specification.

My invention relates particularly to rolling shutters employed as lire-shutters; and my primary object is to provide means for use in connection with rolling shutters or fire-resisting curtains, to prevent the passage of sparks and flames through or around the hood or housing, which contains the roller or drum.

The invention is illustrated in the preferred embodiment in the accompanying drawing, in which- Figure 1 represents a broken view of a wall provided with a door-opening equipped with a lire curtain and housing therefor having my improvement applied thereto; Fig. 2, a broken section taken as indicated at line 2 of Fig. 1; and Fig. 3, a broken perspective view illustrating the manner in which an auxiliary shutter or damper employed is connected with the lower portion of said housing adjacent the curtain-passage thereof.

In the illustrated construction, A represent-s afire-wall; B, a door-opening provided with lateral guides B; C, a drum-housing, or hood, surmounting the door-opening; D, a drum, or roller, journaled in the ends of said housing; E, a rolling shutter, or lireresisting curtain, suitably secured, as at 1, to said drum; and F, an improved shield, damper, or auxiliary shutter, connected with the lower portion of said housing and adapted to be moved to the passage-closing position upon a dangerous rise in temperature.

rIhe guides B bounding the door-opening B of the fire-wall A may be of any suitable construction adapted to receive the edges of the fire-curtain.

The housing C has the plain rear wall 2 and the curved front wall 3, which is extended to form the top wall 4 and lower wall 5. The whole housing may be of integral` format-ion, being usually constructed of sheet metal. The housing is provided at its bottom or lower wall with a curtain-passage 6 which extends longitudinally of the housing. The metal forming the rear wall 2 of the housing is extended forwardly at its lower portion, as indicated at 7, and then bent upwardly and rearwardly, as indicated at 8. The portion 7 affords a bracket or wall which extends forwardly from the fire-wall substantially flush with the-upper end of the door-opening B. At the junction of the rearwardly and upwardly inclined flange 8 and the horizontal portion 7, the metal is cut away or provided with slots 9 (one shown), adapted to accommodate hinges 10 (one shown). Cne leaf 11 of each hinge is secured to the member 8, and the other leaf 12 is secured to the auxiliary shutter, or damper, F. As shown, the shutter F comprises an angle-bar having a forwardly projecting flange 13 which is secured to the hinges 10 and having a downwardly projecting flange 14 which normally is disposed substantially in the plane of the rear wall 2 of the housing. As thus described, the member F is potentially movable and adapted to move by its own weight to the position shown in dotted lines in Fig. 2, in which position it bears against one surface of the firecurtain and closes the fire-curtain passage. rlhe device F is normally held in the position shown in full lines in Fig. 2 by means of a fusible link 15 which has its upper end secured to a stationary part, as to the rear wall 2 of the housing and has its lower end secured to the flange 111 of the member F. As shown, the link is connected by means of rivets 16 and 17.

The fire-curtain is normally held in the elevated posit-ion by any suitable means (not shown) adapted to be a'ected by a dangerous rise in temperature to permit or compel the lire-curtain to move to the openingclosing position. The link 15 is likewise adapted to be affected by a dangerous rise in temperature, and when the link 15 is fused, will permit the auxiliary shutter F to swing about the hinges 10, thereby carrying the lower edge of the flange 111 into engagement with the rear surface of the lire-curtain E. It is obvious that when this operation occurs, the curtain-passage is effectually closed against the passa-ge of flame through the housing about the drum.

The construction described is exceedingly simple, is very durable, and subject to very small danger of getting-out of order. Moreover, the device is externally located with reference to the housing, and is in position to be viewed daily, so that in case of its being out of order, the defect would be likely to be noticed. In addition to this, it may be sometimes advisable to remove one of the rivets connected with the fuse-link l5 and work the member F on its hinges in order to make sure that the action of the device is in no wise impeded by rust or from other cause.

The foregoing detailed description has been given for clearness of understanding only, and no undue limitation should he understood therefrom, but the appended claims should be construed as broadly as permissible in view of the. prior art.

lNhat I regard as new, and desire to secure by Letters Patent., is`

1.' In means of the character set forth, the combination with a lire-wall provided with an opening, of a housing mounted at one side of said wall above said opening, said housing having its rear wall provided at its lower port-ion with an inwardly projecting flange and said housing having a re-curtain passage in front of said flange, an angle form shutter having a downwardly turned flange and having also a forwardly projecting flange pivotally connected with said iirst-named flange adjacent the curtainpassage, a fusible link attached at one end to the downwardly extending flange of the shutter and at the other end to the rear wall of the housing, whereby said shutter is normally restrained from moving to the closing posit-ion,a roll mounted in said housing, and a fire-curtain connected with said roll and extending through said curtain-passage.

2. In means of the character set forth, the combination with a lire-wall provided with an opening, of a housing mounted at one side of said wall above said opening, said housing having its rear wall provided at its lower portion with an inwardly projecting flange and having an upwardly and rearwardly inclined {ian-ge carried thereby, and said housing having a fire-curtain passage in front of said iianges, an angle-form shut` ter having a downwardly projecting flange and having also a forwardly projecting flange, hinges connected with thev last-named flange of said housing and with the forwardly projecting flange of said shutter, a fusible link attached at one end to theV downwardly extending flange of the shutter and at the other end to the rear wall of the housing, whereby said shutter is normally restrained from moving to the closing position, a roll mounted in said housing, and a fire-curtain connected with said roll and eX- tending through said curtain-passage.

THOMAS E. COLLINS.

In presence of L. HnIsLAR, J. G. ANDERSON.

M Copies oi this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

Images