US570710A - Thermal door-closing mechanism - Google Patents
Thermal door-closing mechanism Download PDFInfo
- Publication number
- US570710A US570710A US570710DA US570710A US 570710 A US570710 A US 570710A US 570710D A US570710D A US 570710DA US 570710 A US570710 A US 570710A
- Authority
- US
- United States
- Prior art keywords
- door
- weight
- closing
- closing mechanism
- thermal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002965 rope Substances 0.000 description 16
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/18—Sliding dampers
Definitions
- the present invention relates to improvements in devices for automatically closing fire-doors, which devices are operative upon the occurrence of a certain temperature in the region of the door and are at other times inoperative and unobstructive to the ordinary opening and closing of such door.
- the invention consists of a fire-door mounted upon suitable supports permitting it to be moved to close a doorway, passage-way, window-space, or the like, and is provided with a weight normally held suspended and independent of the movement of the door by a thermal or fusible piece or connection, and of connections between the said weight and the said door arranged in such manner that, upon the fusing or separation of the said fuse, the said weight will be released and by its fall will engage the connections between it and the door and cause the latter to close.
- Figure 1 represents a front or elevation view of the walls of a doorway and of a door provided with one form of my thermal door-closin g mechanism, the door in this case being one running on a trolley-track.
- Fig. 2 represents in elevation a modification of the thermal door-closing device as applied to a door having angular movement or one swinging on hinges, and
- Fig. 3 is a plan of the same.
- A represents the passage-way or passage-space that it may be desired to close in the event of fire.
- B represents a firedoor
- C is the trolley-track, and D the trolleysupports of the same.
- awire rope or similar device E which runs over a pulley F to a small weight G, which ordinarily will be no heavier than is necessary to keep the rope E taut, as in the ordinary cases when the door B is moved to and from the passage-way A.
- ' H is a door-closing weight hung by the wire rope I, running preferably over any proper support, as the pulley J, and secured to the fusible piece K, which latter is preferably arranged in close juxtaposition to the top of the doorway.
- the fuse In the case of anarched doorway the fuse is arranged at the top of or just above the top of the arch of the same.
- the rope E passes freely down through the safetyweight H to the small weight G, and the safety-weight is so arranged that in case of its descent it will engage the weight G and correspondingly pull upon the door-closing rope E.
- Fig. 2 I show a hinged door L.
- the fusible piece is arranged at the top of the doorway-space and runs through the eyes 0 and over the pulley P or similar directing devices and to the door-closing weight H, as before.
- the door-closing cord E in this case passes over the end of the arm Q, projecting from the door at its inner edge, but the cord does not permanently engage this arm and is continued to and is permanently fixed to the outer edge of the door at B. This arrangement of this cord E provides for the proper pull or leverage upon the door and insures the safetyweight swinging the same when said weight is released.
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Special Wing (AREA)
Description
(No Model.) 2 Sheets-Sheetd.
H. B. NEWHA-LL. THERMAL noon CLOSING MECHANISM.
No. 570,710. I Patented Nov. 3. 1896,
ml I I I I a a i 7 llllllllllIlllllllllllllllllJJ K C 1 e o W/ G e l IH(! HWW THE nunms wrrcn: co. muruo WASHINGTON. ma. v
(No Model.) 2 Sheets-Sheet 2..
H. B. NEWHALL.
THERMAL DOOR CLOSING MECHANISM. V N0. 570.710. Patented Nov. 3, .1896.
UNITED STATES PATENT OFFIcE.
HENRY B. NEWHALL, OF PLAINFIELD, NEW' JERSEY.
THERMAL DOOR-CLOSING MECHANISM.
SPECIFICATION forming part of Letters Patent No. 570,710, dated November 3, 1896.
Application filed August 23, 189A. Serial No. 521,090. v (No model.)
To all whom it may concern.-
Be it known that l, HENRY B. NEWHALL, a citizen of the United States, residing at Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Thermal Door-Closing Mechanism, of which the following is a specification, reference being had to the drawings accompanying and forming a part of the same.
The present invention relates to improvements in devices for automatically closing fire-doors, which devices are operative upon the occurrence of a certain temperature in the region of the door and are at other times inoperative and unobstructive to the ordinary opening and closing of such door.
The invention consists of a fire-door mounted upon suitable supports permitting it to be moved to close a doorway, passage-way, window-space, or the like, and is provided with a weight normally held suspended and independent of the movement of the door by a thermal or fusible piece or connection, and of connections between the said weight and the said door arranged in such manner that, upon the fusing or separation of the said fuse, the said weight will be released and by its fall will engage the connections between it and the door and cause the latter to close.
In the drawings accompanying this specification, Figure 1 represents a front or elevation view of the walls of a doorway and of a door provided with one form of my thermal door-closin g mechanism, the door in this case being one running on a trolley-track. Fig. 2 represents in elevation a modification of the thermal door-closing device as applied to a door having angular movement or one swinging on hinges, and Fig. 3 is a plan of the same.
Referring to the drawings in detail, A represents the passage-way or passage-space that it may be desired to close in the event of fire.
B represents a firedoor.
C is the trolley-track, and D the trolleysupports of the same.
To the door is attached awire rope or similar device E,which runs over a pulley F to a small weight G, which ordinarily will be no heavier than is necessary to keep the rope E taut, as in the ordinary cases when the door B is moved to and from the passage-way A.
' H is a door-closing weight hung by the wire rope I, running preferably over any proper support, as the pulley J, and secured to the fusible piece K, which latter is preferably arranged in close juxtaposition to the top of the doorway. In the case of anarched doorway the fuse is arranged at the top of or just above the top of the arch of the same. The rope E passes freely down through the safetyweight H to the small weight G, and the safety-weight is so arranged that in case of its descent it will engage the weight G and correspondingly pull upon the door-closing rope E.
The operation of the mechanism will now be plain. Assuming that the door is in the withdrawn position, as shown, and that a fire occurs, the increased temperature, which will be first felt at the top of the doorway, will cause the fusible piece to melt, thereby disconnecting the door-closing weight and allowing the weight to fall. In falling the weight will engage the door-closing wire and will thereby pull the door to closed position.
In Fig. 2 I show a hinged door L. Here as an illustration of one method of applying my invention to such door-the door-closing wire E runs to within the passage or door way A and over pulleys M and N to the weight G. As in Fig. 1, the fusible piece is arranged at the top of the doorway-space and runs through the eyes 0 and over the pulley P or similar directing devices and to the door-closing weight H, as before. The door-closing cord E in this case passes over the end of the arm Q, projecting from the door at its inner edge, but the cord does not permanently engage this arm and is continued to and is permanently fixed to the outer edge of the door at B. This arrangement of this cord E provides for the proper pull or leverage upon the door and insures the safetyweight swinging the same when said weight is released.
What is claimed as new is- In a thermal door-closing mechanism, the door B, hung so as to be opened and closed, the rope E, and weight G, attached to and traveling with the door, the safety-weight, and a fusible plug adapted to hold the safetyweight in suspended position and out of operative connection with the rope, said safetyweight being freely movable upon said rope E, substantially as and for the purposes hereinbefore set forth.
HENRY B. NEWHALL. Witnesses ROBT. F. GAYLORD, ERNEST HOPKINSON.
Publications (1)
Publication Number | Publication Date |
---|---|
US570710A true US570710A (en) | 1896-11-03 |
Family
ID=2639412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US570710D Expired - Lifetime US570710A (en) | Thermal door-closing mechanism |
Country Status (1)
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3039573A (en) * | 1959-11-09 | 1962-06-19 | Dusing And Hunt Inc | Thermally released closer for fire doors |
-
0
- US US570710D patent/US570710A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3039573A (en) * | 1959-11-09 | 1962-06-19 | Dusing And Hunt Inc | Thermally released closer for fire doors |
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