US1603666A

US1603666A - Movable door binder

Info

Publication number: US1603666A
Application number: US681172A
Authority: US
Inventors: Arthur H Dodge
Original assignee: J G WILSON CORP
Current assignee: J G WILSON CORP
Priority date: 1923-12-17
Filing date: 1923-12-17
Publication date: 1926-10-19
Anticipated expiration: 1943-10-19

Description

A. H: DODGE MOVABLE DOOR BINDER Oct. 19 1926.

Filed Dec. 17, 1925 I5 sheat s-Shut 1 INVENTOR ATTO NEYS Oct. 19 1926.

- A. H. DODGE MOVABLELDOGR BINDER Filed Dec. 17, 1923 5 Sheets-Sheet 2 QM m M q, g firm ATTOR EYS Patented Oct. 19, 1926.

umrso STATES PATENT FFICE.

ARTHUR H. none'n, or new YORK, N. Y., ASSIGNOR TO THE J. G. WILSON oo'nrona- TION, or new YORK, n. Y., -.A conronn'rrou or VIRGINIA.

MOVABLE noon BINDER.

Application filed December 17, 1923.

This invention relates to doors and is particularly intended to be used with sliding 'doors of the fire resisting type. Such doors are usually hung on rollers which travel along a track from open to closed position in which the door overlaps the edges of the doorway it'isdesigned to close. During a fire, great differences in temperature and air pressure frequently exist on opposite sides of the closed fire door, tending to force the door away from the wall at points which are not firmly secured thereto, or even to buckle the door between such points. In either event, the fire goes through the opening and the protective usefulness of the door is destroyed.

The object of my invention is to provide *a door construction which shall be more secure against such failure to protect than previous doors have been. The provision of binders on the wall tohold the front edge of the closed door has been known, also that the overhead rollers will secure the top edge to the wall, but the rear edge of the 535 door has been the weak spot, often being left entirely free to be forced away from the wall during a fire.

An important object of my invention is to provide means for binding the rear edge of the door to the wall. Such binding means cannot be permanently placed, as they would interfere with free opening and closing of the door. I therefore make the rear edge binders movable, and provide means responsive to closing movement of the door to operate the binders to interlock the rear edge of the door and the wall. iCOlTVBISGlY, to prevent interference of the movable binders with the normal free sliding movement of the door, I provide means responsive to initial opening movement of the door to disengage the movable binders from the wall and to hold them unlocked While the door is at all open. By this feature I positively. avoid the danger that anyone should be locked in a burning compartment.

' In the drawings illustrating one of the many possible embodiments of the invention, Fig. 1 is a front elevation of one type of fire door equipped with the binders of my invention;

Fig. 2 is a horizontal section on a larger scale, on the line 2A2 of Fig. 1;

Figs. 2- and. at are horiii on e.

Serial No. 681,172.

parts broken away, on the line 3-3 of Fig. 1, Fig. 3 showing the door closed and the binder opcrated, while in Fig. 4; the door is not quite closed and the movable binder is 1n normal position;

I Fig. 5 is a vertical sectional detail oh the line 55 of Fig. 8, showing the movable binder at'the rear edge of the door;

Fig. 6 is an elevation with parts broken away of a different type of door equipped with movable binders; and

Figs. 7 and 8 are respectively vertical and horizontal sections taken on the lines 7-7 and 88 of Fig. 6.

Referring to Figs. '1 to 5, a wall 9 has a doorway 10 with a fire resisting door 11 to close it in case of fire. The door has a frame made up of the channel members 12 joined together as by welding-at the four corners. Spaced reinforcing channels 13 extend vertically between the top and bottom channels, and one or more diagonal tie rods 14.- make the frame a rigid unit. The frame is sheathed by the horizontally extending sheets 15 which are lapped over the edges of the channel framemembc'rs and firmly united thereto as by spot-welds.

Above the doorway is a track 16 upon which the door is hung by means of hangers 17 having rollers 18 grooved to travel on the track. The track may be horizontal or inclined; in the present example it is shown as inclined so as to close the door when released from its open position in which it is held by a chain 19. extends from a bracket 20 at one edge of the door, over a sheave 21, and carries suitable counterweights 22. The chain includes the usual link 23 which fuses in case of fire to release the counterweights and thus permit the door to travel down the track into its closed position. The movement into closing position may be limited by any suitable abutment, but I prefer to use binders 2d secured to the wall, as by expansion bolts 25, in a position to limit travel of the door. Each binder has the usual offset portion 26 which overlies the inner flange of channel 12, constituting the front edge of this type of the door. The binders thusin'terlock the front edge of the door and wall and positively prevent movement of said front away from the wall. K p p The bottom of? the The chain movement at right angles to the wall by the usual bracket 27 carrying a roller 28 which rests against the lower rear corner of the door when closed, and by the lowermost binder at the front edge of the door. The full length of the door between the roller and the hanger nearest the rear edge of the door has ordinarily been left without means for securing it to the wall, and it is obvious that when a fire starts on one side of the door, the space on the other side maintains its normal tei'nperature and pressure, while the fire changes both and may produce such a great inequality of conditions on opposite sides of the door as to bulge out or buckle the rear ed 'e of the door, even when the frame is of the most rigid construction.

I, therefore, provide at least one movable binder at the rear edge of the door intermediate the top and bottom edges and means for operating this binder to interlock the rear edge of the door and the wall when the door is closed. F or high doors I prefer to use three binders, shown as the hook shaped catches 29 which are fast on the vertical shaft 30. The shaft 30 is journalled for rotation in suitable brackets secured to the channel 12. At the side of the doorway adjacent the rear edge of the door when closed, I cut out recesses in position to receive the catches 29 when operated, and cover the recesses with the apert-ured anchorage plates 32. The central movable binder, located at about the midpoint of the rear edge of the door, is held fast to shaft by a pin 33 which extends somewhat beyond the surface of the catch but not enough to strike the channel flange when the shaft is rotated. The other catches when used are rigidly mounted on the shaft by set screws 34.

To operate the movable binders in response to closing movement of the door, I preferably provide an operating bar 35 which has an opening 36 near one end in which the projecting portion of pin 33 is seated. The bar 35 extends transversely of the door, it being slidable in apertures 37 in the frame members and reinforcing channels The front end 38 of the operating bar is bent over beyond the web portion of the front edge channel 12 into position to abut the offset portion 26 of one of the binders 2a. In construction having spaced frame members covered by sheathing plates, such as shown, the operating bar passes within the door between the sheathing plates, so that no change is made in the appearance of the door and there is no likelihood of the movable binder operating mechanism being tampered with or otherwise damaged. L

lVhen the link 23 fuses and the door moves down the track to its closed position, the end of the stationary binder 24, opposite the bent-over end 38 of the operating bar,

strikes the operating bar and moves it from the position shown in Fig. l j ust before the door is fully closed) into the position shown in Fig. 3. This movementof the operating bar moves the pin and thus rotateathe shaft in a clockwisedirection and SW] the hook portions 39 of the movable binders into interlocking engagen'ient with their respective anchorage plates 32. Q j-f yi it is impossible to move the rear edge or the door away from the wall while the movable binders are in engagement with the anchorage plates. I I

In orC er to permit free movement of the door along the track independently of the condition of operation of the movable binders, I prefer to provide means responsive to opening movement of the door for disengaging the catches 29 from their anchorages. In the present instance I have shown. a spring i0 coiled about the shaft 30, having one end fast to the shaft and the other end secured to one of the journalling brackets 31; The tension of the spring is such as to rotat the shaft in an anti clockwise direction whenever the pressure of the stationary binder 24 is removed from the operating bar A pin ll in the bracket 31 acts as a stop for the shaft pin. 33 to limit such binder retracting movement of the shaft The apertures in the anchorage plates -32 are made wide enough to give ample clearance to the hooked ends 39 of the mov: ble binders 29 as opening movement of the door is begun. It will be apparent that opening of the door is as free with my movable binder construction as it would be without such equipment. E

In Figs. 6, 7 and 8 I have shown my invention applied to a the door of somewhat different construction. As the general prin ciple is the same as in the construction previously described, I have designated similar parts with like reference characters and need only describe the specific differences between the constructions. The door 42 has an outside frame made up of the T-rails 4-3, which are beveled at their ends and firmly united either by welding or by the gusset plates 4-1, or both. The reinforcing channels 45 are centrally slotted at opposite ends to receive the web portions of the frame rails 4-3. The reinforcing channels are positioned in parallel vertical relation at suitable intervals, and are secured to the top and bottom frame rails by bolts or rivets 46 which pass through registering holes in the flange portion of the reinforcing channels and the web portion of the frame rails. The door hangers 4:7 carry the usual rollers .8, but are bent over at their lower ends to form the attaching plates 4-9 which are socured directly to the edge of the frame rail by welding, or otherwise. The sheathing plates 50 on the side of the door towards the wall are lapped around the edges of the fr me rails, the edges of'the sheaths being crimped over, as shown at 51. The opposite sheathing plates 52 pass completely around the edges ofthe door, and are secured by rivets or'bolts 46 to the reinforcing channels nearest the front and rear edges, respectively, of the door.

In this construction the stationary binders 53 must be offset sufficiently to overlap the entire thickness of the door, so that they grip the surfaceof the door opposite the wall instead of the inner flange of the channel frame, as in the previously described construction. The brackets 54: have vertical angle portions which are secured directly to the rear edge of the door outside the sheathing. In this construction also, the operating bar 35 is housed within the door between the sheathing sheets. The movable binders and their operating mechanism are similar to those already described, but the specific shape ofthe catches 55 must be slightly different from the catches 29 in order correctly to engage the anchorage plates 32 as seen most clearly in Fig. 8.

\Vhile I have described my invention as applied to two types of fire doors, it is obvious that they are applicable to all types of tire doors which slide along a track between open and closed position. In some cases the operating bar might not be housed with in the door; for example, if the door were solid. While three stationary and three movable binders have been shown. it will be aparent that any desired number may be provided without changing the operation of the binders. In case only one movable binder is employed, it should be located about halfway between the top and bottom edges, and the shaft 30 becomes a short pin. With this construction, the catch 29 need no!" be affixed to the shaft so long as it is movable with the pin 33, but the spring 40 should always be arranged to interconnect some part movable with the catch and some fixed portion of the door, so as to retract the movable binder when the door is at all open. other changes in detail will suggest themselves to those skilled in door construction, without in any manner departing from the spirit of the invention.

What I claim as new is:

1. In door construction, a wall having a doorway, a sliding door to close the doorway having an edgewise movement of translation only, a fixed abutment, and means operated by engagement with the abutment to bind the rear edge of the door to the wall in response to closing movement of the door.

2. The combination with a door slidable to close a doorway in a wall and a binder on the wall to engage one edge of the door when closed, of a binoer on the door at its opposite ecge, and, means responsive to engagement no frictional resistance to the movements'of the door at leastduring the greater part of the opening and closing movements.

4. In door construction, 'a wall having a doorway, a sliding door to close the doorway,"a catch pivoted at the rear edge of the door for movement towards the wall, an anchorage on the wall in position to be en gaged by the catch when the door is closed and the catch operated, a catch operating member extending beyond a portion of the front edge of the door, and an abutment in the path of movement of the operating member to actuate the same as the door slides into closed position.

5. In door construction, a wall having a doorway, a sliding door to close the doorway, a catch on the rear edge of the door, an anchorage member on the wall, catch operating means housed within the door to move the catch into engagement with the anchorage member, and a member on the wall to actuate the catch operator as the door closes.

6. In door construction, a door adapted for sliding movement relative to a wall to close a doorway therein, a hook shaped catch rotatably mounted at one of the side edges of the door and adapted to engage an anchorage in the wall, an operating bar extending from the catch across the door and projecting beyond part of the opposite side edge of the door, and means connecting the bar and catch, whereby movement of the bar towards the catch will rotate the same to en gage an anchorage in the wall when the door is mounted next to a wall having an anchorage.

7. In door construction, a door adapted for sliding movement relative to a wall to close a doorway therein, a hook shaped catch. mounted at one side edge of the door for rotation about an axis parallel to said edge, a spring urging said catch to rotate away from the wall, and an operating bar connected to the catch and extending transversely of the door beyond the opposite edge thereof, said bar being adapted to be pushed by a member projecting from the wall as the door closes, and thereby to move said catch into engagement with an anchorage on the wall, and said spring restoring the catch and bar to normal position when the member ceases to push the bar.

8. In doc-r construction, a wall having a doorway, a door comprising a. frame and spaced sheathing plates secured to opposite sides of the frame, means for supporting the door for sliding movement to close the doorway, a binder on the wall to grip the front edge of the door when closed, an anchorage on the wall adjacent the rear edge of the door when closed, a movable binder on the door to engage the anchorage, and means housed between the opposite sheathing plates in position to be actuated by the wall binder to operate the movable binder as the front edge of the door closes against the wall binder.

9. In door construction, the combination with a wall having a doorway, a door movable to close the doorway, a plurality of spaced binders on the wall at one side of the doorway in position to engage the front edge of the door when closed, a rotatable shaft extending along the rear ec ge of the door, a plurality of spaced anchorages on the wall at the side of the doorway opposite the binders, a plurality of hook shaped catches fast on the shaft and in position to engage the anchorages when the door is closed and the shaft rotated, and means for rotating the shaft as the door moves into closed position.

Signed at New York, New York this 11th day of December 1923.

ARTHUR H. DODGE.