US2019528A

US2019528A - Balanced door

Info

Publication number: US2019528A
Application number: US627061A
Authority: US
Inventors: Edward H Ellison
Original assignee: Ellison Bronze Co Inc
Current assignee: Ellison Bronze Co Inc
Priority date: 1932-07-30
Filing date: 1932-07-30
Publication date: 1935-11-05
Anticipated expiration: 1952-11-05

Description

Nov. 5, 1935. E. H. ELLISON 2,019,523

BALANCED DOOR Filed July 30, 1952 4 Sheets-Sheet 1 1 E- l as 52 54 s3 2 46 4 41 4-2 ;k ;%fi:: n i m y EDWARD.H. ELLISON I BMW 4 M dal ATTORNEY S Nov. 5, 1935.

E. H. ELLISON BALANCED D0011 Filed July 5O, 1952 4 Sheets-Sheet 2 INVENTOR' EDWARD H ELLISON BY Miami ATTORNEYS E. H. ELLISON Nov. 5, 1935.

BALANCED DOOR Filed July 30, 1932 4 Sheets-Sheet 3 INVENTOR v EDWARD H. ELLISON @kMvW ATTORNEYS E. H. ELLISON Nov. 5, 1935.

BALANCED DOOR Filed' July so, 1932 4 Sheets-Sheet 4 INVENTOR ATTORNEYS and other disturbing influences and also to ren-.

Patented Nov. 5, 1935 BALANCED DOOR Edward H. Ellison, Jamestown, N. Y., mimito Ellison Bronze Company, Inc., Jamestown, N. Y., a corporation of New York Applicatioii luly so, 1932, Serial No. 627.061.

30 Claims.

This invention relates to what I shall describe as panic releasing means for doors mounted to normally slide and swing to opened and closed position; that is, doors adapted to slide and swing about an axis disposed between the edgesthereof such that one edge of the door normally swings inwardly and the other edge normally swings outwardly with respect to the doorway when the door is opened.

More specifically, the invention comprises in ,combination a releasing mechanism to be hereinafter described, a door, and door mounting construction, wherein the door is balanced to normally render the same easy to open and easy to maintain closed against high wind pressures der the door operable to open and close as the ordinary swinging door in the case of an emergency.

Where doors, hinged at one edge thereof, are used in entrances and vestibules of ofiices or other public buildings, they are required to swing outwardly and the wind'pressure thereagainst often makes them "extremely diflicult to operate. In doors of this character, door closers must be used which exert enough pressure on the doors to maintain them closed against wind pressure from the inside due to currents of air outwardly through the vestibule. The pressure required in these door closers and the outside wind pressure adds to the difliculty of opening the doors and frequently is objectionable.

In balanced doors like those to be hereinafter described, wherein part of the door swings outwardly while another part swings inwardly, the doors are adapted to work easily under all conditions of wind pressure; however, such a door could not be operated if pressure were exerted simultaneously at each edge thereof from the inside because an inside pressure at one edge tending to open the door would be counteracted by an inside pressure at the other edge tending to maintain the door closed. Since this condition is apt to obtain in cases of panic when balanced doors are used in schools, theatres or other public buildings where large numbers of people con-p gregate, I have devised the mechanism whichis the subject matter of my present invention, to permit a balanced door to swing outwardly to open as an ordinary door, that. is, hinged at' or proximate one edge thereof, as occasion requires. v The structural features of my present invention are such that all of the parts may be conveniently contained within the door to avoid ungightly projections and irregular contours and I purpose of my device.

(Cl.20--16)' v to permit free application of architectural de sign, The door construction is further adapted to receive all modern improvements which it is desired to add thereto and'is of adequate strength to withstand the stresses and strains imposed 5 thereon when in use.

An object of the invention, accordingly, is to provide a panic releasing mechanism for doors in combination with an improved door mounting means, whereby wind pressures upon the sides 10 of the door may normally be equalized and reduce the force necessary to open said door.-

Afurther object of the invention is to provide a construction of the above character wherein the releasing means, the mounting means and 15 auxiliary elements are maintained within the door and doorway in order that the architectural design and beauty of the door may be preserved.

, A further object of the invention is to provide an improved door releasing mechanism which is 0 adapted to permit a door mounting to be operably converted from that which I shall describe as balanced door operation to that of hinged door operation and vice versa without the use of special tools and the like; and the further object 25 of constructing in combination with said door mounting, means for closing a door carried by said mounting when the device is operated as a balanced door; said means being also adapted to hold said door open when the device is operated 30 as a hinged door.

A further object of the invention is to provide an improved holding or detent mechanism for holding a balanced door, equipped with a releasing mechanism, in its open position in com- 35 bination with means for varying the forces necessaryto actuate said mechanism and correlate the operation thereofto accomplish the two-fold Further objects not specifically enumerated 4.0 above will become apparent from the following description of my invention, or will be specifically referred to in connection with the accompanying drawings, in which .Figure 1 is an inside elevational view of a 46 pair of doors, showing a door releasing mechanism constructed in accordance with the present invention together with the means for operably hanging and supporting said doors for either a compound movement of rotation and transla- 50 tion, or the movement of rotation, alone through which the doors may be opened and closed.

- Figure 2 isaview in section taken on line 2-2 of Fig. 1 looking in the direction of the arrows, showing a plan view of the door mountas ing and releasing mechanism for a pair of doors- A and B.

Figure 3 is a view similar to Figure 2 showing door A after it has been rotated, moved or pushed outwardly to a fully opened position after-the panic release mechanism is operated, released or. disconnected, and door B after it has been moved by a motion of rotation and translation to .fuily opened position in the normal operation thereof as a balanced door.

Figure 4 is a view similar to Figure 2 showing the door A after it has been moved from the position above shown in Figure'3, to a position where the releasing mechanism is about to be latched so as to permit said door to again be operated as a balanced door or be 'panically released, so to speak, as occasion requires.

Figure 5 is an enlarged elevational view showing the parts comprising my door releasing mechanism as assembled on a door in a doorway.

Figure 6 is a view in section taken on a line 6--6 of Figure 5 and looking in'the direction of the arrows.

Figure 745 a view in section taken on line 1--1 of Figure 5 and looking in the direction of the arrows.

Figure 8 is an elevational view taken on a line 88 of Figure 3 showing the detent mechanism for holding the door in its open position when it is operated as a balanced door.

Figure 9 is a. plan view of the mechanism shown in Figure 8.

Referring to the above drawings, it will be seen that doors of any desired shape and construction are illustrated at 20. Push bars 2| are mounted on the inside thereof in the usual fashion and are adapted to respectively operate latches 22, which secure one of the doors in the doorway 23 at the top and bottom thereof, or a latch 24 adapted to lock one door to the other. The doors 20 are swingably and slidably mounted in the doorway 23, which is formed by a floor or sill 25, cornice 26 and hollow mullions 21, on a hinge shaft 30, see Figures 5 and 8, and upper and lower arms 3| and 32 which are shown as formed integral with the hinge shaft or which may be welded or brazed to the ends thereof. Substantially the greater part of two faces of the mullion 21 is cut away at the top and bottom thereof to form hinge arm recesses for the arms 3| and 32. In either case however, the arms are adapted to extend laterally from the hinge shaft 20 in a manner to be hereinafter described. Each door 20 is adapted to swing or rotate on a vertical axis, disposed intermediate the edges thereof, passing through the ends of the arms 3| and 32. Preferably abracket 33, secured to the bottom of the doors 20, is adapted to cooperate with the arm 32 to support the door and the upper part of the door is secured to the arm 3| by means of an operating shaft 34, see Figures 6, '1, and 9, of a door closer and door check 35, see Figures 5 and 8, mounted near the upper edge of the door. The hinge arms 3| and 32 are preferably shown as being secured to the hinge shaft 30, although they may be independently mounted if desired.

Since the details of construction of the hinge shaft 30, bracket 33 and door closer 35, per se, form no part of my present'invention, sufice it to say that they are shown and described in my pending application for U. S. Letters Patent Serial Number 595,324 filed February 26, 1932 and entitled Balanced doors. For an understanding of my present invention, however, it is suflicient to note that the hinge 30 is rotatably supported by a step bearing 36 mounted in the floor or sill 25 and a pin 31 mounted in a bearing 40 at the top of the doorway, see Figures 1 and 5; also, that a torsion spring 38 is suitably mounted in the hinge 30 by means, 39 and 39a, for connecting 5 the ends thereof to the hinge 30 and a fixed point on the step bearing 36. The spring 38 is adapted to urge the hinge 30 and arms 3 I32 in the same direction at all times for reasons hereinafter explained. The bearing 40 is located in one end 10 of a channel bracket 4| mounted within the cornice 26 and thus the doors 2!! are hung in asuitable manner on the hinge shaft 30, arms 3| and 32 and adapted to operate in a manner to be hereinafter described. 15

The sliding movement of the door, or what I shall describe as the movement of translation thereof, is guided by means of a ball bearing roller 42, see Figure 5, journalled upon a stud shaft 43 mounted upon the top of the door 20 in a manner 20 to be hereinafter described. The roller 42 is adapted to travel in the channel bracket 4| which is mounted within the sofiit of the cornice 26 by means of screws 44 and depending lugs 45, adapted to fit into the top of the mullion 21, see Figures 25 5, 8, and 9. The roller 42 thus imparts sliding movement to the door while the hinge shaft 30 and the arms 3|, 32 impart a swinging movement thereto, or a movement of rotation about the axis of said roller as will become apparent from 0 the following description.

The arms 3l-32 in combination with the portion of the door between the axis of the shaft 34 of the roller 42 constitute a toggle which is utilized to facilitate the closing of the door. 35

Referring now to Figures 5 and 6, it will be seen that within the upper wall of the channel bracket 4| a detent mechanism or door holder 46 is mounted to rock on a shaft 41 carried by lugs 50. The detent is held in the desired position by 0 means of a plunger 5| having a roller 52 slidably mounted in lugs 53. A spring 54 is suitably and adjustably disposed around the plunger 5| to urge said roller against the face of the detent at all times. A shoulder 55 is formed on the detent 46 45 and is adapted to be disposed in the path of the roller 42 as shown in Figure 5, and occupies a position such that it will be engaged by the roller 42 when the door is almost fully opened. In other words, when the door is pushed. to fully open posi- 50 tion the roller 42 is adapted to rotate the detent 46 in a counterclockwise direction to permit the plunger roller 52 to snap into a notch 56 under the influence of the spring 54, see Figure 8. It is important to have the plunger 5| retracted so that 55 it will slip into the notch 56 with comparative ease and operate with less pressure than that required to operate the panic release latch, to be hereinafter described, because there is no occasion to actuate the panic release mechanism when 60 the door has been opened as a balanced door and is about to be held open by the detent. The door will be thereafter held in the fully opened position due to the fact that the detent has rotated sufficiently to position a second shoulder 51, formed on the detent 46, in front of the roller 42. To close the door, when it occupies the position shown in Figure 8, it is necessary to pull the same toward the shoulder 51 with sufflcient force to depress the plunger 5| and thereby rotate the detent in a clockwise direction to the position shown in Figure 5.

Referring now to Figures 2, 6, and 7, it will be seen that I provide an arm 60 hingedly secured at 6| to the inside of the door near the top there- 7 of. Theroiler 42 and stud 43 above described are secured to an offset portion 92 formed near the end of -the arm 63 remote from the hinge'6lt.

The offset portion 62 is adapted to enter a recess 63 formed in the top of the door to position theroller 42, located in a channel 64 formed in the channel bracket 4 I; above the top of thedoor and also to permit the remainder of the arm 63 to lie in connection with door B of' Figure 3 when the doors are opened. Tohold the arm 69 in normal position as above described, I provide a latch 65 mounted at the top of the'door and adapted to cooperate with a roller 66 mounted on the arm 69 on a vertical shaft 61 just beyond the roller 42. The latch 66 is mounted on a latch plate 19 and is provided with a latch rod 1| adapted to slide freely in an externally threaded adjustment bushing 12 screwed in a lug I3 formed on the latch plate 10. The head of the latch 66 is slotted as at 14 to receive a roller 16 mounted on a stud l6 rising from a boss II at one end of the latch plate 19. A plate 69 is fastened by means of a screw to the end of the stud 16 to retain the latch 66 and roller 16 in position to reciprocate to and fro as hereinafter described.

A spring 3 disposed around the rod I l between the bushing 12 and the latch 65, is adapted to urge the latch toward the hinge shaft 39. The end of therod II is threaded to receive lock nuts 82 to retain and adjust the latch 65 in position as desired. It will be seen that the pressure exerted by the spring 9| on the latch 65 may be varied by moving the adjustment bushing I2 with reference to the latch. Moreover it will be understood that the resiliently mounted plunger 6|, having a roller 62 adapted to cooperate with the detent 46, above described in connection with 94 to permit the roller 66 'to depress the latch as occasion requires and'permit the door to swing outwardly away from theroller 42 and also to again engage the same in a manner to be hereinafter described. The end 35 of the offset portion 62 of the arm 69 is adapted to lie against one side of the latch 65 when the roller 66 is in latched position, see Figures 6 and 7. A hold down clip 86, secured to the top of the door is adapted to fit over a clip seat 31 formed on the arm 69 to lend rigidity to the parts in latched position and preventthe arm .69 from being inadvertently sprung or, distorted to cause the roller 42 to drag in the bottom of the channel 64.

The operation of my device as thus far described may be understood by referring to Figure 2 wherein it will be seen that when one desires to open the door 13' normally, that is, as abalanced door, it may be done by pushing on the bar 2| or pulling on the handle 99 whereby the edges of the door will begin to move in the direction of the arrows C and D respectively by rotating or swinging about the roller 42. As the door starts to open by this rotating movement a result of thiscompound movement which, in the particular construction shown herein, gives a combined .sliding and swinging movement, or movement of translation and rotation, the door B will be moved from the closed position shown at the right hand side of Figure 2 to the open position shownin Figure 3. Although the particular construction shown herein utilizes a combined sliding and swinging movement, any bodily shiftable movement of the door is contemplated. 1o Referring now to Figure 9 wherein the door B is shown in open position. it will be seen that the arm 3| is formed with an offset portion 9| to form a clearance depression or recess 92 therein. A leaf 93 carried on a hinge pin 94, suitably mounted on the arm 3| near the mullion 21, is provided to close the opening to the clearance de: pression 92. The leaf 93 is adapted to be normally held in the position shown in-Figure 9 by 7 means of a spring 95 against a stop 96. It will be understood that the lower arm 32 is equipped nism will be understood by reference to door A in Figures'2 and 3 wherein it will be seen that when pressure is simultaneously applied at each edge of the door from the inside thereof, such for instance as in the direction of the arrows E and F, 95 the latch 65 will be depressed against the force of the spring 8| and permit the door and arms 3| and 32 to rotate about the hinge shaft and vpin 31 in the mullion 21 to the position shown at the left handside of Figure 3. It will be understood that as soon as the latch 65 is unlatched from the roller 66 on the arm 60, that the arm will rotate onthe hinge 6| and render the roller v 42 inoperative as an axis or" means about which the door may rotate as before and to cause the 46 movement of translation as above described, be-

cause the roller 42 is then disconnected from the door although said roller is still confined in the channel 64. When the door A is opened the arm 69 will occupy a position similar to that just described. en it is desired. to close the door, after having beenpanically released, so to speak, it may be closed as an ordinary door by pulling on the bar 2| or pushing on the handle 99 with the result that the doors will swing or rotate about the hinge shaft 39 and the roller 42 will move to the right hand end of the channel 64. Figure 4 shows theposition of .the latch and roller 65-66 about to be latchably engaged to enable the door to be operated again, either as a normal balanced 0Q door, or, as occasion requires, to swing outwardly as just described.

From Figure 3 it will be seen that the clearance space 92 in the arm 3| is provided to permit the arm to swing around the outside edge of 0 the mullion without interference and in so doing thaat the edge of the mullion depresses the leaf Referring now to Figure (,itwill be seen that a slide 93 is mounted in the mullion to guide the leaf 93 and permit it to-slide back and forth over the edge of the mullion as the door is opened and closed.

It will be understood that'the. torsion spring 33. seeFlg. Lmountedinthehinge II-isadaptedto II urge the hinge, in the case of door 13 in Figure 3, at all times in a; counter-clockwise direction and that when said door is not held open by the detent 46 that said spring is adapted to close the door. It will also be understood that the door check 35 is adapted to, soften the closing.

of the door. In the case of the hinge on which door A of Figure 3 is mounted the spring 38 is adapted to rotate the hinge 30 in a clockwise direction at all times in order to close that door when it is operated as a balanced door; and hold the door open after it is panically released, for instance, in the case of door A, which is shown in its released position, the spring 38 continues to tend to rotate the shaft 30 in a clockwise direction and in this case the spring holds the door open. It will be understood that if door B were panically released to occupy a position similar to that of door A, that the spring in the hinge of said door would tend to turn the hinge 30 in a counter-clockwise direction and hold that door open. It will therefore be understood that with a single spring mounted in the hinge 30 in combination with my door mounting mechanism, I am able to provide means for closing the door when it is operated as a balanced door, said means also being adapted to hold the door open when it is operated as a hinged door.

While I have described what now seems to me to be the preferred embodiment of my invention, it will be understood that the mechanism here shown and described is merely exemplary of one application thereof and that the same is susceptible of modifications without departing from the spirit of my invention or the scope of the appended claims.

What is claimed is:

l. A device of the class described, comprising mechanism for mounting a door to be opened mechanism for mounting a door in a doorway whereby one portion of said door is movable inwardly and another portion of said door is movable outwardly with respect to said doorway when said door is opened, said mechanism comprising an axis releasably secured to said door, in combination with means for releasing said axis from said door whereby the entire door may be moved outwardly as occasion requires.

3. A device of the class described, comprising mechanism for mounting a door between the vertical edges thereof in a doorway whereby one portion of. said door is movable inwardly and another portion of said door is movable outwardly with respect to said doorway when said door is opened, said mechanism comprising a plurality of axes for guiding the movement of said door, in combination with means readily releasing the control of one of said axes to permit both portions of said door to be moved outwardly about one of said axes.

4. A device of the class described, comprising mechanism for mounting a door in a doorway, said mechanism comprising means aflixed to said door between the vertical edges thereof whereby the portion of said door between one edge thereof and the point to which said means is aflixed is movable inwardly and the portion of said door between the other edge thereof and said point is movable outwardly when said door is opened; in combination with pressure operable means for adapting said mechanism to permit both portions of said door to be moved outwardly as occasion requires.

5. A device of the class described comprising mechanism for mounting a door in a doorway whereby one portion of said door is movable inwardly and another portion of said door is mov- 1o able outwardly when said door is operated to open normally, in combination with pressure operable means for changing the normal operation of said mechanism by pushing both portions of said door outwardly whereby the entire door will swing outwardly to an open position and means for effecting a restoration of said mechanism for the normal operation of the door by thereafter closing said door.

6. A device of the class described, comprising 20 mechanism for mounting a door to normally open with a swinging and sliding movement and to be occasionally opened with a swinging movement, said mechanism comprising means for swingably supporting the door and means for normally 25 said mechanism comprising a, hinge mounted in a u doorway for swingably supporting the door between the vertical edges thereof and a guide on the door for normally causing the door to slide to and from open and closed position as said door swings on said hinge, in combination with means for releasing said guide from the door to per mit said door to swingably open.

8. A device of the class described, comprising mechanism for mounting a door to normally open with a swinging and sliding movement and adapted to occasionally open with aswinging movement, said mechanism comprising a hinge for swingably supporting the door and a guide roller releasably secured to the top of the door for normally causing the door to slide to and from open and closed position as the door swings on said hinge, in combination with meansfor releasing said guide roller from the top of the door to permit said door to swing open, said releasing means comprising means adapted to again releasably secure said roller to the top of the door when the door is closed.

9. A device of the class described comprising in combination a hinge mounted in a doorway mullion, a door mounted onthe hinge by means of a pair of arms, each having one end secured to said door and the other ends thereof secured to said hinge, a channel mounted above the door, means for releasably securing to the top of said door a guide roller adapted to run in said channel, said securing means comprising an arm hinged at one end to the door and a latch for securing the other end of said-arm to the door, whereby said door is adapted to normally open and close with a compound sliding and swinging 7o prising means including a guide and a hinge for 1| actuate said detent.

I aoiasas mounting a door adapted to open and close in a doorway witha compound movement; said movement comprising the rotation of said door about said guide and the translation of said guide and door with respect to said doorway, in combina-..

tion with pressure operable means permitting said door to be opened and closed by a movement render said mechanism operable as a mounting on which said door maybe opened and closed with a movement of rotation about the other axis.

12. A device of thecharacter described, comprising in combination mechanism for mounting a door to normally open and close in a doorway with a compound movement of rotation and translation when force is applied at one edge thereof, a detent for holding said door in an open position when the door is pressed into engagement therewith, latching means adapted to render the mechanism inoperative to impart the movement of translation to said door as aforesaid by the simultaneous application of force at-each edge of said door, said detent and latch means.

each comprising means for varying the pressure necessary to actuate said detent and actuate said latch means respectively whereby more pressure is required to actuate the latch means than to 13. 'A device of the character described comprising, in combination me'chanismfor mounting a door to normally open and close in a doorway with a compound movement of rotation and translation when force is applied at one edge thereof, a detent for holding said door in an open position when the door is pressed into engagement therewith, latching means adapted to render the mechanism inoperative to impart the movement of translation to said door as aforesaid by the simultaneous application of force at t a each edge of said door, said detent and latch means each comprising a spring, and means for 50.

adjusting the tension of said springs whereby the door may be pushed against the detent to actuate the same without operating said latching means.

14. A device of, the class described, comprising mechanism for mounting a door to open with a sliding and' swinging movement by the application of force at one edge thereof; in combination with a latch for permitting said door to be opened in combination a hinge mounted in a doorway,

a door mounted on the hinge, a pair of arms, each having one end secured to said door and the other ends thereof secured to' said hinge, a channel mounted above the door, means for releasably securing to the top of said door a guide roller adapted to 11111 in said channel, said securing means commisinganarmhingedatoneendto the door,- a latch ,roller on said arm, and a latch adapted to cooperate with said roller for securing the other end of said arm to the door.

16. A device of the character described com- 5 prising, in combination mechanism for mounting I a door to normallyopen and close in a doorway with a compound movement of "rotation and translation when forceis appliedv at one edge thereof, a detent for holding said door in an open 10 position when the door is pressed into engagement therewith, said detent comprising a notch, and a plunger adapted to cooperatively engage said notch, latching means adapted to render the mechanism inoperative to impart a movement of ill translation to said door as aforesaid by the simultaneous application of force at each edge of said door, said latching means being constructed and adjusted to require more pressure to operate the same than is required to position said plunger in so said notch. a

1'7. A device of the class described, comprising mechanism for mounting a door to be opened with a sliding and swinging movement by the application of force at one edge thereof, in combi? 26 nation with means for permitting said door to be opened with only a swinging movement by the 7 simultaneous application of force at each edge thereof, and means, for closing said door when it is opened with a swinging and sliding movement so or holding said door open when it is opened with a swinging movement.

18. A device of the class described comprising in combination a hinge mounted in a doorway mullion, a door mounted on the hinge by means of a pair of-arms, each having one end secured to said door and the other ends thereof secured to said hinge, a channel mounted above the door, means for releasably securing to the top of said door a guide roller adapted to run in said channel, (,0 said securing means comprising an arm hinged at one end to the door and a latch for securing the other end of said arm to the door, whereby said door is adapted to normallyopen and close with a compound sliding and swinging movement when 45 the arm is latched to the top of the door and open and close with only a swinging movement when said arm is unlatched; and a spring in said hinge adapted to close said door after it has been opened with the compound movement aforesaid and 50 adapted to hold said door open after it is opened with only the swinging movement aforesaid.

19; A device of the character described comprising mechanism for mounting a door to normally open and close in a doorwaywith a comll pound movement of. rotation and translation, said mechanism comprising means forming two axes about which said door is adapted to rotate and means adapted to render one of said axes inoperative as an axisof rotation and render said so mechanism operable as a mounting on which said door may be opened and closed with a movement of rotation about the other axis, in combination with spring means tending to close said door when it is opened with the compound move- 08 ment and tending to open and holdsaid door open after one of said axes is rendered inoperative.

20. A device of the character described comprising a mechanism for mounting a door adapted 70 to be normally opened and closed in a doorway with a compound movement of rotation and translation, said mechanism comprising a doorway mullion, and arms swingably mounted in said mullion, means adapted to render the mecha- 7| nism inoperative to impart the movement or translation to said door and change the operation of said mechanism to permit the door to open and close with only the movement of rotation, said arms being adapted to swing in one direction with respect to said mullion when the door is operated normally and to swing in the other direction when said mechanism is rendered inoperative to impart the movement of translation to said door, in combination with clearance recesses between said arms and mullion to permit of the unobstructed operation of said arms as aforesaid and leaf means adapted to close the opening formed by said clearance recess when the door is closed.

21. A mounting for a door comprising mechanism mounting the door whereby a portion or the door moves in an outwardly direction and the remaining portion moves in an inwardly direction, including a pivot partaking in the control of said movement, and means operable upon a predetermined pressure being applied on both portions of the door and releasing the control of said pivot whereby the door moves bodily in one direction on-the mechanism.

22. A device of the class described comprising mechanism mounting a door to be opened and closed in a doorway with a compound movement of rotation andtranslation,andmechanism mounting said door to be opened and closed in said doorway with a movement of rotation alone, in combination with pressure operable means for selectively adapting one or the other of said mechanisms to govern the opening and closing movement of the door. I

23. Adevice of the class described, comprising mechanism for mounting a door to normally open with abodily shiftable movement and to be occasionally opened with a swinging movement. said mechanism comprising a first means adapted to be secured to the door at one point and controlling the movement of this point of the door, and a second means secured to the door at a point spaced from the first point for controlling the movement of this second point of the door, in combination with pressure operable means for readily releasing said second means from its control of the door to permit said door to swingably open upon said first means. I v

24. A device of the character described, comprising in combination mechanism for mounting a door to normally open and close in a doorway with a bodily shiftable movement, a detent for holding said door in an open position when the door is pressed into engagement therewith, and

latching means adapted to render the mechanism inoperative to impart the bodily shiftable movement to said door as aforesaid by the simultaneous application of force at each edge of said door.

, said detent and latch means being releasable at difierent pressures-whereby more pressure is required to actuate the latch means than to actuate said detent.

25. A device of the class described, comprising mechanism for mounting a door to normally open with a bodily shiitable movement and to be occasionally opened with a swinging movement, said mechanism comprising a pair of hinge arms each of which is adapted to be hingedly secured to the door in the same vertical axis and hingedly mounted upon the doorway for controlling the movement of this point of the door, and a second means secured to the door at a point spaced from the vertical axis for controlling the movement of this second point of the door, and pressure opeach of which is adapted to be hingedly secured 10'- to the door in the same vertical axis and hingedly mounted upon the doorway for controlling the movement of this pointof the door, a roller means secured to the door and having a roller at a point spaced from the vertical axis, a guide 15 means secured to the doorway for receiving the roller, the guide means and roller means controlling the movement or this point or the door, and means for readily releasing one o! the aforesaid means from its control of the door to permit 20 said door to swingably open upon said hinged mounting for the hinge arms upon the doorway.

27. A device of the class described, comprising mechanism for mounting a door to normally open with a bodily shiftable movement and to 25 be occasionally opened with a swinging movement, said mechanism comprising a pair of hinge arms each of which is adapted to be hingedly secured to the door in the same vertical axis and hingedly mounted upon the doorway for controlling the movement of this point of the door, a roller secured to the door at a point spaced from the vertical axis, a guide secured to the doorway for receiving the roller, the guide and roller controlling the movement 01' this point of the door, and means for readily releasing the roller from its control or the door to permit said door to swingably open upon said hinged mounting for the hinge arms upon the doorway.

28. A device or the class described, comprising 40 mechanism for mounting a door to normally open with a bodily shirtable movement and to be cccasionally opened with a swinging movement from an axis adjacent one vertical edge or the door, said mechanism comprising a first means 45 secured to the door at one point and controlling the movement or this point or the door, -a second means controlling the movement or the door, an arm carrying the second means and securing the same to the door at a second point spaced from 50 the first point, a pivot adapted to hingedly secure the arm to the door, in combination with pressure operable means for releasably securing said arm to the door to permit said arm to be released and the door to swingably open. 65

29. A device of the class described, comprising mechanism for mounting a door to normally open with a bodily shiftable movement and to be occasionally opened with a swinging movement, said mechanism comprising a pair of hinge 60 arms each of which is adapted to be hingedly mounted upon the doorway and hingedly secured to the door in the same vertical axis for controlling the movement of this point or the door, a roller means secured to the door at a point spaced 65 from the vertical axis, a guide means secured to the doorway for receiving the roller, the guide and roller controlling the movement of this point of the door, means for readily releasing one of the aforesaid means from its control or the door to permit said door to swingably open upon said hinged mounting for the hinge arms upon the doorway, and spring means tending to close the door when it is opened with a bodily shiitable 7 open when it is opened with a swinging move-- ment. v

30. A device of the class described, comprising mechanism for mounting a door to normally open with a bodily shiftable movement and to be occasionally opened with aswinging movement, said mechanism comprising a doorway mullion having the greater part of two faces cut away forming a hinge arm recess, a pair of hinge arms each or which is adapted to be hingedly mounted upon the doorway and hingedly secured to the door in the same vertical axis for controlling the movement of this point of the door, means carried by the doorway and the door at a point spaced from the vertical axis for controlling the movement of this point of the door, means for readily releasing the aforesaid means from its control of the door to permit said door to swingably open upon said hinged mounting for the hinge arms upon the doorway, and a clearance recess in each hinge arm adjacent the hinge mounting into which the mullion corner. enters upon opening of the door with a swinging movement.

EDWARD H. ELLISON.