GB2212855A

GB2212855A - Mechanism to move doors and gates

Info

Publication number: GB2212855A
Application number: GB8727642A
Authority: GB
Inventors: Donald Brendan Carr
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-11-26
Filing date: 1987-11-26
Publication date: 1989-08-02
Also published as: GB8727642D0

Abstract

To pivot a door or gate, an electric, pneumatic or hydraulic mechanism pulls a lower, upper, or both door or gate hinges to incline the pivot axis of the door or gate. Door or gate movement may be damped. A ratchet may ensure that door or gate movement does not reverse before completion of swing in one direction.

Description

MECHANISM FOR THE AUTOMATION OF DOORS AND GATES.

This invention relates to Automated opening and closeing of doors and gates.

There are systems available for automating doors and gates, those available tend to use similar signaling, and mainly differ in there method of motivation. The systems available use some form of power to motivate the door or gate Automated doors and gates are expensive, because of the power source which moves the door or gate, and the safety features that must be used in conjunction with powered motivation; According to the present invention, powered motivation is eliminated. The opening and closing movements are achieved by the door or gates own weight.

By moving the hinge side of the door or gate out of plumb, the result is that the weight of the door or gate is thrdwn out of equilibrium and the door or gate swings away from the bias that has been applied. Reversing the bias will result in the door or gate returning to its original positions.

There are three ways to obtain this bias: I) By moving the bottom pivot of the door or gate 2) By moving the top pivot of the door or gate.

3) By moving both the top and bottom pivots together in oposite directions.

The mechanism can be operated by any of the following:a Electric motor.

b. Electric solanoid.

c Hydraulic.

d. Pneumatic.

In some circumstances it may be required to ensure that the movement of the door or gate dose not reverse until the completion of its swing, to achieve this a simple ratchet is fitted to the door or gate pivot, It may also be necessary to have a controlled speed of operation in which case a simple damping device can be fitted.

A specific embodiment of the invention will not be described by way of example with reference to the accQJipanying drawings in which: Fig. I shows a mechanism for creating the desired bias, by moving the bottom pivot of the door or gate, Fig. 2 Shows a mechanism for creating the desired bias, by moving the top pivot of the door or gate, Fig.3 Shows a mechanism for creating the desired bias by moving both top and bottom pivots stmultanivously, and in opposite directions.

Fig. I The bottom door or gate pivot fits into the pivot shoe 2, When activated the motor 9 turns the cam 5 by way of gear cog 7 which draws the slide 3 which is positioned between the top and bottom plates 4 and 6 which are spaced by spacers I until de-activated by limit switch IR to prevent reversal of movement before full cycle a ratchet 8 is used.

Fig. 2 The top door or gate pivot fits into the end of leaver II when activated the solenoid I2 pushes the lever II against the spring I3 until the catch I4 engages the notch at the end of the lever II, holding it in place until the second sblanoid I5 when activated pushes the catch so that it disengages the lever allowing the spring to return the lever II to its original position.

Fig 3 Is the same as Fig. 2 with the exception of a second mechanism that moves the lever II tn the opposite direction simutaniously to the top movement, also it is only necessary for each lever to move a much smaller distance than would be required for a single pivot action.

No. I6 door frame or gate pier. No. I7 top mechanism, No, I8 bottom mechanism, Fig. 2 Could also apply to the bottom pivot only.

Claims

CLAIMS.

I) A mechanism that moves the pivot of a door or gate out of its normal plumb position, thereby creating a bias, and when required return to its original position.

2) A mechanism as claimed in claim I wherein the bias, is created by moving the bottom point of pivot 3) A mechanism as claimed in claim I wherein the bias is created by moving the top point of pivot.

4) A mechanism as claimed in claim I wherein the bias is created by moving both top and bottom points of pivot simultaniously and in opposite directions.

5) A mechanism as claimed in claims I - 4 wherein the door or gate is provided with a ratchet 6) A mechanism as claimed in claims I s 4 wherein the door or gate is provided with a means of damping the swing of the door or gate.

7) A mechanism substantially as described herein with reference to figures I - 3 of the accompanying drangs.