US3216051A - Door control mechanism - Google Patents

Description

Nov. 9, 1965 o. c. ECKEL 3,215,051

DOOR CONTROL MECHANISM Filed March 17, 1964 4 Sheets-Sheet 1 INVENTOR Nov. 9, 1965 o. c. ECKEL DOOR CONTROL MECHANISM 4 Sheets-Sheet 2 Filed March 17, 1964 INVENTOR.

Nov. 9, 1965 o. c. ECKEL 3,216,051

DOOR CONTROL MECHANISM I Filed March 17, 1964 4 Sheets-Sheet 3 INVENTOR.

4 Sheets-Sheet 4 Filed March 17, 1964 INVENTOR.

United States Patent 3,216,051 DOOR CONTROL MECHANISM Oliver C. Eckel, Carlisle, Mass. (R0. Box 226, Cambridge 38, Mass.) Filed Mar. 17, 1964, Ser. No. 352,623 8 Claims. (CI. 16-80) This invention relates to mechanism to control a door.

One object of my invention is to provide control mechanism that enables a door to be moved between open and closed positions without raising or lowering the door.

Another object is to provide mechanism that will maintain a door in closed position until an appreciable amount of pressure is applied to it, thus avoiding involuntary opening, even slightly, of a door.

Still another object is to provide mechanism that will return a door to closed position automatically when pressure against it is released.

A further object is to provide mechanism in operative arrangement whereby the resistance to the opening movement is reduced when the door opens beyond a critical an le.

2 still further object is to provide the mechanism referred to above which utilizes two compression springs by a single movement of the door, to attain the advantage of a higher constant of compression and greater flexibility, and also to enable the installation of my mechanism in less space.

The foregoing and other objects which will appear as the nature of the invention is better understood, may be accomplished by a construction, combination and operative arrangement of parts such as is disclosed by the drawings. The nature of the invention is such as to render it susceptible to various changes and modifications, and therefore, I am not to be limited to the construction disclosed by the drawings nor to the particular parts described in the specification; but am entitled to all such changes therefrom as fall within the scope of my claims.

In the drawings:

FIG. 1 is a front elevational view, broken away, showing a double door in closed position, with my control mechanisms connected to each door.

FIG. 2 is a top plan view of one door in closed position, showing my mechanisms connected thereto.

FIG. 3 is a fragmentary, top plan view showing one door in partly open position.

FIG. 4 is a fragmentary, front elevational view showing my mechanism when a door is in closed position.

FIG. 5 is an enlarged, plan view of a pivot pin that connects two links of my mechanism to a cam.

FIG. 6 is a perspective View of a cover for my mechamsm.

FIG. 7 is an end elevational view of the cover shown in FIG. 6.

FIG. 8 is a top plan view of a cam forming mechanism.

FIG. 9 is a front elevational view of said cam.

FIG. 10 is a perspective view of a link forming part of my mechanism.

FIG. 11 is a top plan view similar to FIG. 2; but showing a modification of my invention and with the door in open position.

FIG. 12 is an end elevational view of the mechanism shown in FIG. 11.

FIG. 13 is a perspective view of the bushing shown in FIG. 11.

As illustrated, door 12 has a main body 14, and another door 16 has a main body 18. Both doors are substantially duplicates. A door mount 20 extends partly around a rotatable support shown as a post 22 and screws 24 attach said door mount 20 to said body 14. Pins 25 pass part of my 3,216,051 Patented Nov. 9, 1965 through said post 22 and said door mount 20, holding them together.

A door mount 26 extends partly around a rotatable support shown as a post 28 and screws 30 attach said door mount 26 to said body 18. Pins 31 extend through and hold together said post 28 and door mount 26.

A lower bearing 32 rotatably receives said post 22, and is bolted as at 34 to a door jamb 36. A lower bearing 38 rotatably receives said post 28 and is bolted as at 40 to a door jamb 42. An upper bearing 44 rotatably receives said post 22 and is bolted as at 46 to said door jamb 36. Another upper bearing 48 rotatably receives said post 28 and it is bolted as at 50 to said door ja-mb 42.

Since my invention is applicable to one door, I shall describe the mechanism as applied to said door 12. A cam 54 is attached to and rotates with said post 22 as the door is swung between closed and open position. This cam has a main body 56 having a hole 58 therethrough at one end that receives said post 22 that is held by a pin 60 driven into a hole 59 in said body 56. Another hole 61 in said cam body receives a stud 76 driven thercinto and later referred to. Extending upwardly from said cam body is a cam actuating portion 62 of triangular shape and having two cam surfaces 63 and 64. A spacer 65 is provided between said cam body 56 and said upper hearing 44.

A movable connector 66 is shown as a link 66 that rests on said cam body 56 and is moved by the cam as later explained, being in contact with said cam surface 64. This link 66 has a hole 68 at one end later explained, and it also has an elongate slot 70 intermediate opposite ends thereof.

Another movable connector or link 72 rests on said link 66 and it has a hole 73 later referred to, and also an elongate slot 74 similar to slot 70. A stud 76 loosely extends through holes 68 and 73 and tightly fits in said cam body hole 61, hence this stud will move with said post 22.

A compression device 80 has a connector shown as a clevis 82 that is interiorly screw-threaded at one end and has a hole 84 that extends through both arms thereof at the side. A pin 86 slidably extends through the latter hole and into link slot 70, and a cotter pin 88 holds said pin 86 in place. Said clevis 82 pivots on said pin 86 as the latter slides in said link slot 70.

Said compression device 80 has a long rod 90 that is screw-threaded at one end as at 91 and connects with interior screw-threads 92 at one end of said clevis. An adjustable, stop member nut 94 and a locking nut 96 are screw-threadedly connected to said screw-threads 91. An

elongate compression spring 98 is movably mounted on said rod 90 one end of which bears against said adjusting nut 94. The opposite end of said spring enters a stop member shown as a conical bearing 100 firmly mounted on said rod 90 so that the spring is retained under some compression on said latter rod between said nut 94 and said bearing 100.

An angle support 102 is attached to an outside mounting or header 103 and the rod 90 movably extends through the latter and somewhat beyond. Said bearing 100 extends into a beveled hole 104 in said header, said rod 90 being slidable in the latter hole.

Another compression device 80a, similar to said device 80, has a connector or clevis 82a. that is interiorly screwthreaded at one end and has a hole 84a that extends through both parts thereof at the side. A pin 86a slidably extends through the latter hole and into link slot 74 and a cotter pin 88:: holds said pin 86a in place. Said clevis 82a pivots on said pin 86a as the latter slides in said link slot 70.

Said compression device 80a has a long rod 90a that is screw-threaded at one end as at 91a and connects with said clevis interior screw-threads 92a at one end thereof. An adjusting nut or stop member 94a. and a locking nut 96:: are screw-threadedly connected to said screw-threads 92a. An elongate compression spring 9811 encircles said rod a one end of which bears against said adjusting nut 94a under some compression normally. The opposite end of said spring enters a conical bearing 100a firmly mounted on an end portion of said rod 90a so that the spring is retained on said latter rod between said nut 94a and said bearing 100a. The latter extends partly into said header 103.

An angle support 102a. is attached to said header 103 and the rod 90a goes through the latter and somewhat beyond. Said .bearing 100a extends into a beveled hole 104a also in said header, said latter rod being slidable in the latter hole.

In the event that a second door 14 is used the door control mechanism is similar to that previously described, and I have shown some of the parts in said FIG. 1. A cam body is similar to body 56 and the compression device 112 is similar to said device 80, and a clevis 114 is similar to clevis 82. Also a long rod 116 on which an adjusting nut 118 as well as a lock nut 120 are scre-w-threadedly connected are similar to said rod 90 and nuts 94 and 96. Likewise a compression spring 122 is similar to spring 98 and it enters a conical bearing 124 similar to bearing 100, that is set in an angle support 126 similar to support 102, and that is attached to said header 103.

My mechanism is preferably protected by a cover 130 extending across the two doors shown. This cover 130 has a bottom portion 132, a side 133 extending angularly from the latter, and another bottom portion 134 laps over said portion 132 and it has an angularly extending side 135. Extending angularly outward from said sides 133 and 135 are flanges 138 and 140 respectively. Recesses 142 are provided in said bottom portions 132 and 134 at an end to accommodate said post 22, while other recesses 144 are also provided therein at an opposite end to receive said post 28. Holes 146 and 148 are provided in said flanges 138 and 140 respectively to receive screws, not shown, to attach said cover 130 to said header 103.

In operation, when a door 12 is swung to open it, said post 22 rotates, carrying cam 54 with it. This causes cam surface 64, which is in contact with link 66, to move the latter causing the link to rotatably move clockwise or towards the outside edge of the door body as illustrated in said FIG. 3. The movement of link 66 in an are com; presses said spring 98 between said nut 94 and said bearing 100. When movement of link 66 causes the angle between the slot 70 and rod 82 to exceed 90 degrees the pin 86 slides inwardly in said slot 70 towards the pivot point, reducing the leverage to compensate for the additional compression of the spring as the movement of the door continues towards full open position.

Said door 12, upon release, will return to closed position automatically, by virtue of the compression of the spring, and a reverse movement of pin 86 in the slot 7 0 will occur. The door will remain in closed position until pressure against the door starts the control mechanism in action, as described.

When the opening movement of the door is in a direction opposite to that above described, the device 80a as well as the link 72 and connected parts move in a manner similar to that described, as a result of the cam surface 63 being forced against said link 72 as said post 22 is rotated.

My mechanism may be used on a door that opens in one direction only, in which event only one compression device and connected parts need be used. a 7

FIGS. 11 and 12 show a modified form of my invention in which a screw 154 extends through said link 66 and adjusts the position of the latter by contact with said jamb 36. A lock nut 158 on said screw 154 permits adjustment of the latter. Another stop screw 160 extends through a hole 162 in said link 72 and similarly limits the movement 4 of the latter link. A lock nut 164 is connected to said screw 160.

A rocker arm 166 is pivotally connected to said header 103 by means of a pivot member 168 that screws into the header. Near one end of said rocker arm is a bushing 170 bearing against said arm and mounted on said rod 90. This bushing 170 extends into a groove 173 in said rocker arm.

Another bushing 174 is at the other end portion of said rocker arm 166, bearing against the latter and it extends into a groove 175 in said rocker arm. Both of said rods 90 and 30a. slidably extend through slots 172 and 176 in said rocker arm and through holes 170 and 180 respectively in bearings 170 and 174.

When either said rod 90 or 90a is moved by movement of said link 66 or 72, both of the compression springs 98 and 98a are compressed between their respective bushings 170 and 174 and adjusting nuts 94 and 94a, thus compressing both springs whenever a single link is moved.

What I claim is:

1. Control mechanism in combination with a door adapted to swing between closed and open positions, said mechanism comprising a rotatable support fixed to said door, a cam fixedly attached to said support, a link adapted to be actuated by movement of said cam, first means rotatably connecting said link to said cam, said link having an elongate slot therein, a connector, 2. pin extending through and slidable in said slot and connected to said connector, a movable compression device attached to said connector embodying an elongate rod, a spring movably mounted on said rod, and adapted to be compressed upon movement of said link in one direction, and means on said rod against which said spring may be compressed.

2. Control mechanism in combination with a door adapted to swing between closed and open positions, said mechanism comprising a rotatable support fixed to said door, a cam fixedly attached to said support, a pin fixedly mounted in said cam, a movable compression device, a movable connector operably associated with said cam and movable thereby and connected to said compression device, said connector having a hole through which said pin loosely extends and having an elongate slot therethrough, said device embodying a spring adapted to be compressed upon movement of said movable connector in one direction, means at opposite ends of said spring between which said spring may be compressed upon application of pressure thereto upon movement of said movable connector in one direction, said device having a hole theretbrough, and another pin extending loosely through said slot and said latter hole and connecting said device and connector.

3. Control mechanism in combination with a door adapted to swing between closed and open positions, said mechanism comprising a rotatable support fixed to said door, a cam fixedly attached to said support and having an opening therein to fixedly receive said support and having another opening therein, a movable compression device, a movable connector operably associated with said cam and movable thereby and connected to said compression device, said device embodying a spring adapted to be compressed upon movement of said movable connector in one direction, and means at opposite ends of said spring between which said spring may be compressed upon application of pressure thereto upon movement of said movable connector in one direction, said mechanism embodying a pin that movably extends through said connector and fixedly extends into said cam other opening, said cam having an actuating portion having a cam surface, said movable connector being so positioned as to be contacted by said cam surface during actuation whereby said device is actuated and said spring compressed upon movement of said cam in one direction.

4. Control mechanism in combination with a door adapted to swing between closed and open positions, said mechanism comprising a rotatable pipe fixed to said door, a cam fixedly attached to said pipe, and having a cam surface, a link so positioned as to be contacted by said cam surface and adapted to be moved by movement of said cam, a pin extending loosely through said link and fixedly extending into said cam, said link having an elongate slot therein intermediate its ends, a compression device adapted to move by movement of said link embodying an elongate rod and a clevis connected to said rod, a pin extending loosely through said clevis and said link slot and movable in said slot, a spring movably mounted on said rod, and stop members on said rod, said spring being located between said stop members and adapted upon movement of said "device to be compressed.

5. Control mechanism in combination with a door adapted to swing between closed position and in two opposite directions to open positions, said mechanism comprising a rotatable support fixed to said door, a cam fixedly attached to said support and having two cam surfaces, two movable compression devices, adapted to be individually moved, two movable connectors operably associated with said cam and positioned in the path of movement of said two cam surfaces and connected to said compression devices, each said connector being movable individually during movement of said cam in a predetermined direction, said devices each embodying a spring adapted to be individually compressed upon movement of said movable connectors, and means at opposite ends of each said spring between which said springs may be compressed upon application of pressure thereto upon movement of said movable connectors.

6. Control mechanism in combination with a door adapted to swing between closed position and in two opposite directions to open positions, said mechanism comprising a rotatable pipe fixed to said door, a cam fixedly attached to said pipe and having two cam surfaces, two links so positioned as to be contacted by said surfaces and one or the other of which is adapted to be moved by movement of said cam, a pin extending loosely through said two links and fixedly extending into said cam, each said link having an elongate slot therein intermediate its ends, two compression devices each adapted for individual movement by movement of said link, each embodying an elongate rod and a clevis connected to said rod, two pins each respectively extending loosely through said clevises and said link slots and movable in said slots, two springs each being movably mounted on said rods and adapted to be respectively compressed upon movement of a said link in a predetermined direction, and stop members on each said rod, said springs being located respectively between said stop members and adapted upon movement of said device to be compressed.

7. Control mechanism in combination with a door adapted to swing between closed position and in two opposite directions to open positions, said mechanism comprising a rotatable support fixed to said door, a cam fixedly attached to said support and having two cam surfaces, two movable compression devices adapted to be individually moved, two movable connectors operably associated with said cam and positioned in the path of movement of said two cam surfaces and movably connected to said devices, each said connector being movable individually during movement of said cam in a predetermined direction, said devices each embodying an elongate rod, springs each movably mounted on a respective rod and both adapted to be compressed upon movement of either of said movable connectors, stop means at opposite ends of each said spring between which said springs may be compressed upon application of pressure thereto by movement of said movable connectors, a rocker arm adapted to be rotatably mounted on supporting means outside of said door and outwardly beyond said springs and having opposite end portions, the said stop means at one end of said springs bearing against said rocker arm, said rods movably extending through said end portions respectively whereby movement of either said rod in either of two opposite directions is adapted to actuate said rocker arm and thus compress said springs simultaneously.

8. Control mechanism in combination with a door adapted to swing between closed position and in two opposite directions to open positions, said mechanism comprising a rotatable upright member fixed to said door, a cam fixedly attached to said latter member and having two cam surfaces, two movable compression devices, adapted to be individually moved, two movable links operably associated with said cam and positioned in the path of movement of said two cam surfaces and movably connected to said devices, each said link being movable individually during movement of said cam in a predetermined direction, said devices each embodying an elongate rod, compression springs each movably mounted on its respective rod and adapted to be compressed upon movement of said movable connectors, stop members at opposite ends of each said spring between which said springs may be compressed upon application of pressure thereto upon movement of said movable links, a rocker arm adapted to be rotatably mounted on supporting means outside of said door and outwardly beyond said springs and having opposite end portions, the said stop members at one end of said springs bearing against said rocker arm, said rods movably extending through said end portions respectively whereby movement of either said rod in either of two opposite directions is adapted to actuate said rocker arm and thus compress said springs simultaneously.

JOSEPH D. SEERS, Primary Examiner.

Claims (1)

1. CONTROL MECHANISM IN COMBINATION WITH A DOOR ADAPTED TO SWING BETWEEN CLOSED AND OPEN POSITIONS, SAID MECHANISM COMPRISING A ROTATABLE SUPPORT FIXED TO SAID DOOR, A CAM FIXEDLY ATTACHED TO SAID SUPPORT, A LINK ADAPTED TO BE ACTUATED BY MOVEMENT OF SAID CAM, FIRST MEANS ROTATABLY CONNECTING SAID LINK TO SAID CAM, SAID LINK HAVING AN ELONGATE SLOT THEREIN, A CONNECTOR, A PIN EXTENDING THROUGH AND SLIDABLE IN SAID SLOT AND CONNECTED TO SAID CONNECTOR,

Images