US1565524A - Door control - Google Patents

Description

Dec. 15, 1925' w. B. SUMMERALL noon CONTROL Fiied Dec. 1 192.4.

2 Sheets-Sheet 1 INVENTOR Juliane/aid.

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A'ITORNEYS Dec. 15, 1925' 1;565;524

w. a. SUMMERALL DOOR CONTROL INVENTOR WIUB-SMIUIM;

ATTORNEYS Patented Dec. 15, 1925.

UNITED STATES PATENT OFFICE.

DOOR CONTROL.

Application filed December 10, 1924. Serial No. 755,096.

To all whom it may concern:

Be it known that I, WILLIAM BRYAN SUM- MERALL, a citizen of the United States, and resident of Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Door Controls, of which the following is a specification.

My invention is an improved door control,

and it consists in the combinations, constructions and arrangements herein described and claimed. 7 An object of the invention is to provide a device of the character described which will act automatically to hold a swinging closure towhich it is attached in any position to which the closure can be swung but which will yield in response to a predetermined pressure on the closure to permit swinging movement of the closure.

A further object of the invention is the provision of a device of the character de scribed which will be practically noiseless in operation, is not likely to get out of order easily, and which is thoroughly practical commercially.

A further object of the invention is the provision of a device of the character described which is adapted to he operative-1y applied to a frame and swinging closure construction of any known type without any changes in the frame and closure construction being required. I

A still further object of the invention is the provision of a device of the character described which is adjustable to vary within a considerable range the resistance which the device will offer to swinging movement of a door or like closure to which the device has been applied.

Other objects and advantages will be ap parent from the following description, considered in conjunction with the accompanying drawings, in which- Figure 1 is a fragmentary perspective view, showing the upper part of a door and frame construction equipped with a door control embodying the invention, the door being closed.

Figure 2 is a horizontal section through the frame exhibited in Figure 1, the view being taken at the level of the upper end of the door and showing in full lines the position of the device when the door is closed and in dotted lines the position of the de Figure 3 is a section along the line 33 of Figure 2.

Figure 4 is a relatively enlarged fragmentary perspective view showing in separated position the parts of the device at the meeting ends of the arms thereof.

Figure 5 is a View similar to Figure 4, showing the parts at the outer end of one of the arms of the device.

In Figure 1 I show a frame including a jamb 1 to which a door2 is attached by hinges, as at 3 in Figure 2 to swing horizontally. When the door is in closed position, as shown by the full lines in Figure 2, a side face of a vertical edge portion thereof is disposed flatwise against a vertical stop strip a which is secured to the face of the jamb 1 in any suitable known manner, no means therefor being shown. The construe tion described so far is ordinary and forms no part of the invention.

The improved control forthe door 2 or like swinging closure, as provided by the invention, comprises a pair of arms 5 and 6 respectively. The arm 6 is a flat bar-like member enlarged laterally at one end as indicated at 7, the marginal edge portion of the enlargement being arcuately curved as shown and the enlargement being formed to be' slightly concavo-convex as best seen in Figure 3, the upper face of the enlargement being concave. A vertical aperture 8 is formed in the arm 6 adjacent to its juncture with the enlarged end portion 7 and the enlargement 7 is provided with a central opening 9. The arm 6 also is enlarged laterally at the end thereof which is opposite to the enlargement 7, as at 10, the enlargement 10 preferably being of less area than the enlargement 7 but also being formed with an outwardly curved marginal edge and with a central opening as indicated at 11 in Figure 3. The arm 6 is curved longitudinally in its plane so that one longitudi- 'nal edge of the arm 6 is con'cavely curved between the enlargements '7 and 10, as at 6 while the other longitudinal edge 6 may be slightly convex between the enlargements 7 and 10.

The arm also is a flat bar-like member enlarged laterally at one end to provide an enlargement 12 having the marginal edge thereof arcuately curved and being substantially coextensive in area with the enlargement 7. However, the enlargement 12 is not concavo-convex but is formed with the upper and lower faces thereof parallel. A central opening 13 which is similar to the hereinbefore mentioned opening 9 is formed in the enlargement The arm 5 is en larged laterally at its other end, as at 1 1, to provide an enlargement having an arcuately curved marginal edge. The enlargement 14 is similar to the enlargement of the arm 6 and is formed with a central opening 15 whiclr is similar to the opening 1.1. The arm 5 is bent in its plane so that one longitudinal edge of the arm 5, indicated at 5, is concavely curved between the enlargements 1% and 12, while the other longitudinal edge of the arm 5, indicated at 5", is slightly convex between the enlargements 1-1 and 12.

The arms 5 and 6 and of course the enlargements at the ends thereof preferably are formed of metal. The arms 5 and 6 are arranged so that the concavely curved longitudinal edges 5 and 6* will be disposed in confronting relation and at the inner sides of the arms 5 and 6 and the enlargements 7 and 12 are connected by means of a vertical pivot bolt 16 and the arms 5 and 6 are disposed at an acute angle to each other shown in the drawings, the enlargement 12 being uppermost and being spaced from the enlargci'nent T by a flat fiber disk 17 which is coestensive in area with each of the enlargenients 7 and 12 and has a central opening 18 through which the shank of the bolt 16 enter With this arrai'lgement, the con cavely CL ed surface of the enlargement 7 is uppermost. and the head of the bolt 16 will be disposed against the convexly curved lower face of the enlargement 7. The shank of the pivot bolt is of suliicient length to extend above the upper face of the enlargement 12 through a central opening 19 in a fiber disk 20 and through a central opening 21 in a convexo-concave metal clamping disk 22 which overlies the fiber disk 20, the upper end portion of the shank of the bolt being provided with screw threads for engagement with a nut 23, whereby the enlargement 7, disk 17, enlargement 12, disk 20 and top clamping disk 22 will be connected together in superposed relation when the nut 23 is screwed on theupper end portion of the shank of the bolt 16. The clamping disk 20 is formed with a locking lug 24 which eX- tends outwardly and then downwardly from the peripheral edge thereof for engagement with the aperture 8 of the arm 6, whereby the clamping disk 22 will be held against turning about the axis of the bolt 16 independently of the enlargement 7. The friction between contiguous members of the superposed series of enlargements and washers can be varied within a considerable range b adjusting the nut 23 on the shank of the bolt 1.6 to vary the pressure by means of which adjacent parts of the superposed series are clamped against each other. Since the under face of the top clan'iping disk 22 is concave and the upper face of the enlargement 7 which constitutes the lower clamping mem ber of the series also is concaved, the frictional contact between the clamping disk 22 and the upper liber spacing disk 26 and the frictional contact between the enlargen'ient T and the lower friction spacing disk 1'? will. occur first at the peripheral edges of the top clamping member 22 and lower clamping member '4' as the nuts 23 are tightened against the clan'iping disk 22 and the areas of frictional contact between the top clamping disk 22 and the spacing disk 20 and between the lower clamping member 7 and the spacing disk 17 will enlarge radially inward as the pressure on the top clamping disk 22 which results from the tightening of the nut 23 on the bolt 16 is increased. This friction between adjacent parts of the superposed se ries will not result in loosening or tightening of the nut 23 when the arms 5 and 6 are swung in opposite directions about the axis of the bolt 16 since the clamping disk 22 with which the nut 23 is in contact and the enlargement 7 with which the head of the bolt 16 is in contact are held against relative movement about the axis of the bolt 16.

A right angular bracket 25 has a flat supporting arm 25 which preferably is formed with the outer end portion thereof rounded at its edge as best seen in Figure 5 and is provided firther with a vertical opening 26 which is located centrally of the rounded outer end portion. The bracket 25 is secured by screws 27 or like fastening devices to the door 2 so that the supporting arm 25 will be horizontal. The enlargement 14 of the arm 5 is spaced from the supporting arm 25 of the bracket by a flat fiber disk 28 having a central opening 29. A second fiber disk 30 having a central opening 31 is superposed upon the enlargement 14. A top clamping and locking plate 32 is superimposed upon the disk 30 so that a vertical opening 33 in the plate 32 will be in vertical alignment with the openings 31, 15, 29 and 26 and a straight edge portion 34 of the plate 32 will be disposed in contiguous relation to the vertical attaching portion of the bracket 25. The shank of a pivot bolt 35 is projected through the aligned openings 26, 29, 15, 31 and 33 in the order named that the head of the bolt 35 will be disposed against the lower face of the horizontal arm 25* of the bracket and the threaded end portion of the shank of the bolt will extend above the upper face of the plate '32. A nut 26 is engaged with the threaded upper end portion of the shank of the bolt. The parts 25 28,

14, 30 and 32 thus are secured in superposed relation and the friction between adjacent parts may be varied by adjusting the nut 36 on the shank of the bolt 35, the adjusted position of the nut on the bolt being maintained when the arm 5 is swung about the axis of the bolt 35 since relative movementof the plate '32 with which the nut 36 is in contact and the horizontal supporting arm 25 of the bracket, with which the head of the bolt 35 is in contact, is prevented.

A bracket 37 which is similar to the bracket 25 is right angular and has a vertical attaching portion secured byfiscrews 38 or like fastening devices to the jamb 1 so that the supporting arm, indicated at 37 of the bracket will behorizontal. The supporting arm 37 of the bracket 37 is similar to the supporting arm 25'? of the bracket 25 and is provided with an opening 39. A fiber disk 40 having a central opening 41 spaces the en largement 1O from'the horizontal arm 37 A second fiber disk 42 having a central opening 43 is superimposed upon the enlargement 10. A metal clamping and locking plate 44 which is similar to the clamping and locking plate 32 is superimposed upon the fiber disk 42 so that an opening 45 in the clamping and locking plate is in vertical alignment with the openings 42, 11, 41 and 39 while a straight portion ofthe marginal edge of the plate 44, indicated at 46 is in abutting relation to the vertical attaching portion of the bracket 37. I A bolt 47 which is similar to the bolt 35 is extended through the aligned openings 39, 41, 11, 43 and 45 in the order named so that the head of the bolt is in contact with the lower face of the supporting arm 37 while the threaded end portion of theshank of the bolt extends above the up per face of the clamping and locking plate 44. A nut 48 is screwed on the extending upper end portion of the shank of the bolt against the plate 44 and holds the parts 37, 40, 10, 42 and 44. in superposed relation. The friction between adjacent parts of this superposed series can be adjusted by adjusting the nut 48 on the bolt 47 and will be maintained when the arm 6 is swung about the axis of the bolt 47 by reason of the provision of the clamping and locking plate 44 which is held against movement about the axis of the bolt 47 independently of the supporting arm 37 of the bracket.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. The bracket 25 is secured to the door on the side thereof that comes in contact with the door stop 4 so that the bracket will be disposed at the upper edge of the door and outwardly from the plane of the outer face of the door stop when the door is in closed position. If the door stop is relatively wide, the bracket 37 may be secured on the face thereof. Otherwise, the bracket 37 will be secured to the door jamb proper. The arms 5 and 6 are pivotally and frictionally connected to one another in the manner hereinbefore described and pivotally and frictionally connected at their outer ends to the brackets 25 and 37 respectively whereby a toggle joint between the brackets 35 and 37 and therefore between the door and its frame is provided. The adjacent longitudinal edges of the arms 5 and 6 are concavely curvedlongitudinallyv of the arms so that the space between the arms is relatively great and affords clearance for the stop strip 4 when the door has been swung to an angle of nearly 130 from fully closed position. automatically to stop movement of the door when the force which has been applied to the door to swing it from closed position to any desirable position is removed. Slamming of the door, either to closed position or to fully open position is prevented. As fiber disks are interposed between adjacent parts of the device, the operation of the device will be accompanied by very little,.if any, noise. The connection of each arm with its bracket is both pivotal and frictional and the connection of the arms together also is pivotal and frictional so that the device comprises three separate points of frictional and pivotal connection between relatively moving parts, whereby a relatively great resistance to swinging movement'of the door to which the device is applied can be provided with but slight wear on relatively moving contiguous surfaces of adjacent l1l0V- ing parts of the device. The resistance which will be offered to moven'ient of the door can be varied by adjusting any one or all three of the nuts of the device on its bolt orthei'r bolts and a predetermined adj ust ment will be maintained for a relatively long time since the wear on the metal parts of the device is practically negligible and the wear on the fiber parts of the device is very slight.

The concavity of the. arms 5 and 6 is mainly for the purpose of avoiding contact with the projecting edge of the door (see Figure 2) when the door is swung back full 180.

' The'clamping plates22 and 32 by reason oftheir stability, compel double friction ateach joint.

The device is generally adaptable to right or left and is adaptable to both the :outside or inside of the door.

I claim j v 1. A device of the character described.

The device will act comprising a pair of flat bar-like arms, one of said arms having a concavo-convex laterally enlarged end portion formed with an arcuately curved marginal edge, the other of said arms having a laterally enlargedfiat end portion formed with an outwardly curved marginal edge, said enlarged end portions having central openings formed theret-hrough adapted to be placed in alignment when the arms are disposed with the fiat enlargement above the concavo-convex enlargement, a spacing disk between said enlargements, a second spacing disk superimposed on said flat enlargement, a convexoconcave clamping disk superimposed upon said last named spacing disk, said spacing disks and said clamping disk having central openings in alignment with one another and with the openings of said enlargements, a bolt having the shank thereof extending through said aligned openings, a nut in threaded engagement with said bolt for cooperating with the bolt to secure said enlarged end portions of the arms and said disks in superposed relation, means whereby one of said arms is pivotally attached at its other end to a door, and means whereby the other of said arms is secured at its other end to the frame for said door.

2. A device of the character described comprising a pair of fiat bar-like arms, one of said arms having a concavo-convex laterally enlarged end portion formed with an arcuately curved marginal edge, the other of said arms having a laterally enlarged flat end portion formed with an outwardly curved marginal edge, said enlarged end portions having central openings formed therethrough adapted to be placed in alignment when the arms are disposed with the flat enlargement above the concavo-convex enlargement, a spacing disk between said enlargements, a second spacing disk superimposed on said flat enlargement, a convexoconcave clamping disk superimposed upon said last named spacing disk, said spacing disks and said clamping disk having central openings in alignment with one another and with the openings of said enlargements, a bolt having the shank thereof extending through said aligned openings, a nut in threaded engagement with said bolt for cooperating with the bolt to secure said enlarged end portions of the same and said disks in superposed relation, means whereby the other of said arms is secured at its other end to the frame for said door, said clamping disk and the lower arm having cooperative means for preventing relative rotational movement of said clamping disk and the enlarged end portion of said last named arm about the axis of said bolt, and for permitting relative axial movement of said clamping disk and the enlarged end portion of said last named arm.

3. A device of the character described comprising a pair of fiat bar-like arms, one of said arms having a concavo-convex laterally enlarged end portion formed with an arouately curved marginal edge, the other of said arms having a laterally enlarged fiat end portion formed with an outwardly curved marginal edge, said enlarged end portions having central openings formed therethrough adapted to be placed in alignment when the arms are disposed with the flat enlargement above the concavo-convex enlargement, a spacing disk between said enlargements, a second spacing disk superimposed on said fiat enlargement, a convexoconcave clamping disk superimposed upon said last named spacing disk, said spacing disks and said clamping disk having central openings in alignment with one another and with the openings of said enlargements, a bolt having the. shank thereof extending through said aligned openings, a nut in threaded engagement with said bolt for co operating with the bolt to secure said enlarged end portions of the same and said disks in superposed relation, means whereby the other of said arms is secured at its other end to the frame-for said door, the lower arm having an aperture adjacent to its enlarged end portion and said clamping disk having an outwardly and downwardly extending lug at its peripheral edge adapted to enter said aperture when said clamping disk is moved axially toward the enlarged end portion of said last named arm to lock said clamping disk and said last named arm against relative rotational movement about the axis of said bolt.

4. A device of the character described comprising a pair of arms, eachrhaving an end portion frictionally and pivotally attached to an end portion of the other arm, a right angular bracket attachable to a door, a second right angular bracket attachable to the frame of the door, each of said brackets having a horizontal supporting portion, the horizontal supporting portion of each bracket having a vertical opening, a spacing disk for each bracket, said spacing disk being superimposed upon the horizontal supporting portion of the bracket, the second end portion of one of said arms being superimposed upon the spacing washer on one of said brackets and the second end portion of the other arm being superimposed upon the spacing washer of the other bracket, said last named end portions of the arms having vertical openings in alignment with the openings of underlying spacing disks and supporting portions of the respective brackets, a spacing disk superimposed upon the last named end portion of each arm, a clamping and locking plate superimposed on each of the last named spacing disks, said clamping and locking plate having an edge portion thereof in contact with the bracket on which it is supported and having a vertical opening in alignment with the parts underlying said clamping and locking plate, and a bolt and nut for each 01": said brackets, said bolt extending through the opening of the horizontal portion of its bracket and through WILLIAM BRYAN SUMMERALL.

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