US957923A

US957923A - Baffle for fireproof shutters.

Info

Publication number: US957923A
Application number: US47139109A
Authority: US
Inventors: James G Wilson
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-01-09
Filing date: 1909-01-09
Publication date: 1910-05-17
Anticipated expiration: 1927-05-17

Description

J. G. WILSON.

BAFFLE FOB PIBEPBOOF SHUTTEBS. APPLICATION FILED IAILQ. 1909.

957,923, PatentedMay 17,1910.

8 SHEETS-SHEET 1- h-1 uc n-vloz JAMES G. M/IL 301V J. G. WILSON. BAFPLE FDR FIREPROOF SHUTTERSR APPLICATION FILED JAN- 9. 1909.

Patented May 17, 1910.

3 EHEBTS-BHEET 2.

STATS ZIBAFFLE FOR FIREPRU OF SHUTTERS.

Specification tr Letters Patent.

atented May it, tar.

Application filed January aieoa'. Serial no. armor To all whom it may concern:

Be it known that I, Janine Gr. WILSON, a

subject of the Kint Great Britain, resid-' m ing at Larchmont, estchester county, State of New York, have invented a new and useful Improvement in Baflies for Fireproof Shutters, of which the following is a specification.

My invention relates to sliding or rolling shutters made of fire proof material and is particularly applicable to the well known type of such shutter constituted of interlocking metallic slats.

The object of my invention is to provide a means by which, when the shutter is closed, any transit of hot air, gas, noxious vapors andflames is prevented from taking place across or around the interior end or edge of the shutter. a

' By the interior edge or end I mean, in the case of arolling shutter, that edge or end which is adjacent to the barrel or shaft u on which the shutter rolls. In the case 0 a straight sliding shutter, I mean that edge or end which is most remote from the opening to be protected when the shutter is fully open. straight sliding shutters, my invention may be applied to each and every edge of the shutter when said. shutter is closing its openin My lnvention is more particularly intended for shutters of the rollin type as above mentioned and may be use in such type of shutters, not only to prevent the passage of gases, vapors, flames, '-etc., as

aforesaid, from one side of the shutter to the other, but also to completely cut ofl such gases, vapors, flames, etc., from access to the shutter coil and the casing surrounding the same, thereby in many, if not in most instances avoiding injury to the mechanism pmper of the shutter so that the same will, except in the case of the most severe confla ations, be'uninjnred by fire and capable offeing re-used with but slight repair and adjustment.

My improved device may, as will be seen,

be arranged to operate automatically either by means fusible at a van temperature, or mechanicall If pre erred, I may arrange one form 0 my improved device to operate by hand.

Referring to the drawings, Figure 1 lllustrates in perspective a preferred embodimentof my invention as applied to a rolling slat But in the case of such.

shutter, the left hand side of the shutter being cut awa and shown in section. Fig.

2 is a vertica section along the same lineas the sectioned perspective of Fig. 1, the up er ortion only of the shutter being consi ere Fig. 3 il my invention in which the device is applied to the shutter instead of to the coil casing as in Figs. 1 and 2. Fig. 4 is like Fig. 3 but shows a diflerent form of my invention as aplied to the shutter pr r. Fig.- 5 is an en arged detail of an and o my invention as shown in Fig. 4:, Fig. 6 is an elevation, part broken away, showm 'my invention as applied to a straight sli 1n 7 is a section alon -the line -7 of Fig. 6; Fig. 8 is a deta showin one mode of actuating my device; and ig. 9 is a detail showing a modified mode of operating my invention.

Referring to the drawin s, it is a rolling metallic shutter compose of interlocked ustrates a modification of shutter; Fig.

slats a, and arranged to protect a door open- I to the shutter ingFof fire proof material is afixed to the 7 wall G above the shutter opening and surrounds the shutter coil as shown, the wall G itself closing the casing on its open side.

The'shutter bei-n closed there is, in the constructions usua y employed, a space necessarily existing between the lower ed e of the casing F and'the shutter on one si e and the lower edge of the lintel H. and the shutter on the other side. In the case of severe fire, drafts are apt to be established by which the flame is sucked up through these spaces into the casing on the one side or the other accordi clear around the shutter coil and issue therefrom on the other side thus becoming a means of communicating'fire from one side of the protective shutter to the other; even should the fire not he so severexas to pass to the side upon which the fire starts, w -'ch flame may pass flames from one side of the shutter to the other, there will still be danger of smoke and noxious fumes being so transferred and becoming a source of damage throu h taiuting of the goods or the room w 'ch the shutter is designed to protect. The shutter coil 0, whether a simple tubular shaft, a tube or equivalent series of barrels connected by springs to a central shaft, or made in some other preferred fashion is also liable to beseverely damaged and rendered worthless for any future purposes if flame or hot air gains access to the casing.

My invention provides against any and all of the above rlsks.

It consists of two iron slats I-and I of L shaped section and extending the Whole width of the shutter, the one slat being hinged to an angle iron e fixed to the building structure in any usual way and to which the lower ed e of casin F is also attached and the ot er being slmilarly hinged to the bottom of the lintel on the other side of the shutter; at the end of each of these angled slats is an extension. or lever arm J in the plane of the wider element of the L and perpendicular to the line of hinges, said arm terminating in an enlarged portion J. Originally these angled slats are in the position shown in Fig. 2, the arms J being drawn u to the lintel and casing respectively and oined to eyes K by fusible-links L, these links being made to melt at a predetermined temperature. Upon the melting of the links and by reason of the excesswei ht of the wider element 6 of the baflle p ates and the weights J at the ends of the levers, the bafiie plates will turn upon their hinges so as to throw up the narrower element 0 of said bafiie plates against the shutter slat on each side, thereby completely closing the spaces between the lower edge of the casing and the shutter on one side and the lintel and the shutter on the other side and blocking oif from the casing F with its interior mechanism all access of smoke, hot air, vaporsor flames.

, To reset the baflie plates requires merely that the weighted arms J be raised into the position of Fig. 2, and new fusible links L inserted to retain said arms in the position shown. Ordinarily the baflie plates are set and in no way interfere with the normal position of the shutter, becoming operative, and dropping into closed position only when the temperature rises to whatever limit may have been determined upon as dangerous.

Fig. 3 shows a modification of my invention in which the baflie plates are attached to the shutter proper instead of to the easing and lintel adjacent to the shutter. These plates d, d, in the modification shown are of fireproof material such as sheet iron and may be resilient. The plates are preferably rectangular in form, but may be angular and they extend clear across the width of the shutter, and are riveted or otherwise suitably attached to the two sides of shutter slats as shown in the figure. When the shutter is coiled these flaps are forced down on each side against the slats by the weight of the superimposed shutter layers, or fit as to the inner flap in a recess M provided in the roller, as the shutter rolls upon the coil and do not add to the diameter of said coil. When the shutter'is lowered, these plates are freed as the slat which carries them approaches the o ening in the casing and are guided by en lugs k fixed to the baffle plates and cooperating with lugs k fixed to the casing, the one over the reinforcing angle iron 6 of the casing and the other against the wall at 7', thereby forming a complete closure to the interior of the cas- -ing on either side of the shutter (see Fig.

5 'for details of the guiding lugs k and 70 Fig. 4 shows bafile plates attached to the shutter as in Fig. 3 but hinged instead of riveted; they are preferably of heavy stifl' material, whereas the plates of Fig. 3 are preferably relatively thin and resilient.

In thefirst embodiment of my invention as disclosed in Figs. 1 and 2, it is obvious that I may, if I prefer, substitute for the fusible link a catch 70,, as shown in detail in Fig. 9. In such case it will be necessary to release the bafile plates by hand in case of fire or they may beso released each night, for example, at the close of the days business.

In the various modifications shown I have provided baflie tection on each side of the shutter. In many cases, however, the risk of fire attaches only to one side of the shutter as, for example, where an engine room is to be shut off from a warehouse or mill room in which there is neither inflammable material nor means capable of easily starting a fire. In such case, it may be preferred to omit the device from that side of the shutter which is considered reasonably safe, and it is obvious that such omission does not lie outside of the limits of my invention nor dispense with the advantages which I have set forth.

Figs. 6 and 7 show two of the preceding modifications of my invention as applied to a straight slidingshutter' at the top the baflie plate is attached to the casing or wall and at the bottom to the shutter proper.

Instead of using avity or guiding means to bring the baflie p ates into position, other means may, obviously, be employed. Thus in Fig. 8 a spring S throws the bafiie plate k into operative relation so soon as the fusible link L is opened by the heat.

The casing F of Figs. 1 and 2 may, for the purposes of my invention, be equivalented by the groove space F in which the shutter may move, as in Fig. 7, or into which the shutter may retire upon opening. For the purposes of my invention also, a door and a shutter may be considered as the same structures and I wish the terms so to be understood.

lates and, therefore, pro.

otaeas I do not desire to limit myself to the specific forms of a device as shown in the drawings, since it is clear that many other arrangements may be utilized without departing from the spirit of the invention, and I therefore claim:

1. In a fire resistant shutter adapted to move into a casing on opening, a fire resistant slat movably attached to supporting means independent of said casing and immediately adjacent to the entrance of said casing, said slat being adapted to substantially close the juncture of said shutter with said casing when said shutter is closed, substantially as and for the purpose described.

2. In a rolling metallic shutter adapted to move into a casing on opening, a fire resistant slat hingeably attached to supporting means independent of both shutter and casing and immediately adjacent to the entrance of said casing said slat being adapted to substantially close the juncture of said shutter with said casing when said shutter 'is closed, substantially as and for the purpose described.

3. In combination in a rolling metallic shutter, the shutter coil, a fire reslstant'casing inclosing said shutter coil and provided with an entrance through which the shutter is adapted to pass, supporting means to which said casing is fixed, and a fire resistant slat hingeably attached to said supporting means immediately adjacent to the entrance of said casing and adapted to substantially close the juncture of said shutter with said casing when said shutter is closed, substantially as and for the purpose described.

4. In combination in a rollin metallic shutter, the shutter coil, a fire resistant cas ing inclosing said shutter coil and rovided with an entrance slot through w ich the shutter is adapted to pass when 0 erated,

casing sup orting means to which the sai is xed, a fire resistant slat hingeably attached to said supporting means immediately adjacent to the entrance of said casing, a weight cooperating with said slat and adapted to hold said slat in closed relation to the shutter, and means fusible at a predetermined temperature adapted to retain said slat in normally open position, substantially as and for the purpose described.

5. In combination in a rolling metallic shutter, the shutter coil, a fire resistant casing inclosing said shutter coil and provided with an entrance slot through which the shutter is adapted to pass whenoperated,

supporting means to which said casing is fixed, and a fire resistant slat on each side of the shutter hingeably attached to said supporting means immediately adjacent to the entrance of said casing, said slats being adapted to substantially close the juncture of said shutter with said casing on each of said shutter sides when said shutter is closed, substantially as and for the purpose described.

In testimony whereof I have hereunto set my hand.

JAS. G. WILSON.

Witnesses:

ELMER SHIRLYOUNG, JOHN A; KEHLENBEGK.