GB2143566A

GB2143566A - Doors

Info

Publication number: GB2143566A
Application number: GB8317195A
Authority: GB
Inventors: Brian John Floyd
Original assignee: Individual
Current assignee: Individual
Priority date: 1983-06-24
Filing date: 1983-06-24
Publication date: 1985-02-13
Also published as: GB8317195D0; GB2143566B

Abstract

A pair of doors (11, 12) which are mounted on fillet plates (5) are preferably of a flexible transparent plastics material with a steel reinforcing strip (13) extending along the upper edge and down an angled edge (14) provided at the upper corner of the door (11, 13) which is remote from the joint line (15) of the two doors. Hinges are provided between each door (11, 12) and its respective fillet plate (5) with the axis (18) of the hinge pin in each case extending parallel to the angled edge (14) of the door and at an angle of approximately 11 DEG to the vertical. Due to the inclined hinge axes, the doors (11, 12) will not merely swing when opened but will be raised and when released from an open position will move to the closed position under the action of their own weight. <IMAGE>

Description

SPECIFICATION Doors The invention relates to doors and particularly though not exclusively to doors for factories, through which fork-lift trucks and other vehicles can be driven.

Factory doors through which vehicles can be driven are frequently formed of a flexible transparent material and usually, though not always, provided as double doors. It is desirable that such doors should be self closing and while self closing means for doors are well known, they tend to be expensive and if of the hydraulically damped spring loaded piston kind, can be damaged if they are acted onto too harshly, for example by a vehicle striking the door at excessive speed.

According to the invention a door is hingedly mounted only adjacent its upper end, is of generally rectangular shape but is cut-off at an angle adjacent its inner top corner and is hingedly mounted on a fillet plate which is inserted in the doorway and which mounts stationary portions of hinges by which the door is hingedly mounted, the axis of the hinge being inclined to the vertical at an angle of between 5 ad 45".

The invention has wide application and particularly can be utilized on single or double doors, doors of flexible or rigid construction and doors for industrial or other use.

Thus the normal rectangular shaped doorway can be modified in shape by securing a fillet plate of triangular form in the upper corner of the doorway at the side thereof at which the door is to be hingedly mounted, the fillet plate preferably being of right angled triangular form and at the side thereof which forms the hypotenuse of the triangle has apertured bushes which form the stationary portions of the hinges and co-operate with apertured bushes provided on the edge of the door where it is cut-off at an angle and with a hinge pin so that the door is hingedly mounted on the fillet plate with the hinge axis inclined to the vertical.

An opening force applied to the door causing the door to pivot on the hinge will, due to the inclined axis of the hinge, cause the door to move upwardly as it opens and when the opening force applied to the door is removed the door will move to the closed position since the weight of the door will apply a closing moment thereto.

The invention is diagrammatically illustrated by way of example in the accompanying drawing, in which: Figure 1 is an elevation showing a pair of double doors according to the invention; and Figure 2 is an exploded view of a fillet plate and a portion of the door circled on Fig. 1 and to a greater scale.

Referring to the drawings, a wall 1 has a doorway therein defined by upright door posts 2 and 3 and a lintel 4. A respective fillet plate 5 is secured to the upper inner face of each of the door posts 2 and 3. As shown in Fig. 2 each fillet plate 5 comprises a mounting plate 6 which can be screwed to the door post 2 or 3 by screws engaged in apertures 7 and a further plate 8 welded to the plate 6 in a T configuration, the plate 8 being of right angled shape and having a pair of apertured bushes 9 mounted on its sloping edge 10.

Preferably the angle between the sloping edge 10 and the edge which is welded to the plate 6 is in the region of 11 .

A pair of doors 11 and 12 are mounted each on a respective one of the fillet plates 5.

The doors 11 and 12 can each be formed of a flexible transparent plastics material with a steel reinforcing strip 13 extending along the upper edge and down an angled edge 14 provided at the upper corner of the door 11, 13 which is remote from the joint line 15 of the two doors.

As best seen in Fig. 2, the steel strip 13, at the edge 14 mounts four apertured bushes 16 which can co-operate with the apertured bushes 9 of the fillet plate 5 and with a pin 17 to form a hinge mounting the door 11 or 12 on the respective fillet plate 5. The axis 18 of the pin 1 7 in each case extends parallel to the edge 10 of the respective fillet plate 5 and the edge 14 of the door and thus at an angle of approximately 11 to the vertical.

Due to the inclined axes 18, as the doors 11, 12 are opened, in either direction, the doors 11, 12 will not merely swing open but will be raised and thus when released from an open position they will move to the closed position under the action of their own weight.

The apertures in the bushes 9 and/or 16 can if desired be lined with a hard wearing low friction material such as nylon and thrust washers may be provided if desired between the bushes 9 and 1 6. Although the doors 11, 12 as shown are said to be flexible, they could equally be rigid and only a single door could be provided instead of double doors.

1. A door to be hingedly mounted only adjacent its upper end, of generally rectangular shape but cut-off at an angle adjacent its inner top corner and to be hingedly mounted on a fillet plate which is provided in a generally rectangular doorway and which mounts stationary portions of hinges by which the door is hingedly mounted at said inner top corner, the axis of the hinge being inclined to the vertical at an angle of between 5 and 45 in a manner such that the door moves upwardly as it opens.

2. A door according to claim 1, in which the fillet plate is of right angled triangular form and at the side thereof which forms the hypotenuse of the triangle has apertured

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Doors The invention relates to doors and particularly though not exclusively to doors for factories, through which fork-lift trucks and other vehicles can be driven. Factory doors through which vehicles can be driven are frequently formed of a flexible transparent material and usually, though not always, provided as double doors. It is desirable that such doors should be self closing and while self closing means for doors are well known, they tend to be expensive and if of the hydraulically damped spring loaded piston kind, can be damaged if they are acted onto too harshly, for example by a vehicle striking the door at excessive speed. According to the invention a door is hingedly mounted only adjacent its upper end, is of generally rectangular shape but is cut-off at an angle adjacent its inner top corner and is hingedly mounted on a fillet plate which is inserted in the doorway and which mounts stationary portions of hinges by which the door is hingedly mounted, the axis of the hinge being inclined to the vertical at an angle of between 5 ad 45". The invention has wide application and particularly can be utilized on single or double doors, doors of flexible or rigid construction and doors for industrial or other use. Thus the normal rectangular shaped doorway can be modified in shape by securing a fillet plate of triangular form in the upper corner of the doorway at the side thereof at which the door is to be hingedly mounted, the fillet plate preferably being of right angled triangular form and at the side thereof which forms the hypotenuse of the triangle has apertured bushes which form the stationary portions of the hinges and co-operate with apertured bushes provided on the edge of the door where it is cut-off at an angle and with a hinge pin so that the door is hingedly mounted on the fillet plate with the hinge axis inclined to the vertical. An opening force applied to the door causing the door to pivot on the hinge will, due to the inclined axis of the hinge, cause the door to move upwardly as it opens and when the opening force applied to the door is removed the door will move to the closed position since the weight of the door will apply a closing moment thereto. The invention is diagrammatically illustrated by way of example in the accompanying drawing, in which: Figure 1 is an elevation showing a pair of double doors according to the invention; and Figure 2 is an exploded view of a fillet plate and a portion of the door circled on Fig. 1 and to a greater scale. Referring to the drawings, a wall 1 has a doorway therein defined by upright door posts 2 and 3 and a lintel 4. A respective fillet plate 5 is secured to the upper inner face of each of the door posts 2 and 3. As shown in Fig. 2 each fillet plate 5 comprises a mounting plate 6 which can be screwed to the door post 2 or 3 by screws engaged in apertures 7 and a further plate 8 welded to the plate 6 in a T configuration, the plate 8 being of right angled shape and having a pair of apertured bushes 9 mounted on its sloping edge 10. Preferably the angle between the sloping edge 10 and the edge which is welded to the plate 6 is in the region of 11 . A pair of doors 11 and 12 are mounted each on a respective one of the fillet plates 5. The doors 11 and 12 can each be formed of a flexible transparent plastics material with a steel reinforcing strip 13 extending along the upper edge and down an angled edge 14 provided at the upper corner of the door 11, 13 which is remote from the joint line 15 of the two doors. As best seen in Fig. 2, the steel strip 13, at the edge 14 mounts four apertured bushes 16 which can co-operate with the apertured bushes 9 of the fillet plate 5 and with a pin 17 to form a hinge mounting the door 11 or 12 on the respective fillet plate 5. The axis 18 of the pin 1 7 in each case extends parallel to the edge 10 of the respective fillet plate 5 and the edge 14 of the door and thus at an angle of approximately 11 to the vertical. Due to the inclined axes 18, as the doors 11, 12 are opened, in either direction, the doors 11, 12 will not merely swing open but will be raised and thus when released from an open position they will move to the closed position under the action of their own weight. The apertures in the bushes 9 and/or 16 can if desired be lined with a hard wearing low friction material such as nylon and thrust washers may be provided if desired between the bushes 9 and 1 6. Although the doors 11, 12 as shown are said to be flexible, they could equally be rigid and only a single door could be provided instead of double doors. CLAIMS

2. A door according to claim 1, in which the fillet plate is of right angled triangular form and at the side thereof which forms the hypotenuse of the triangle has apertured bushes which form the stationary portions of the hinges and co-operate with apertured bushes provided on the edge of the door where it is cut-off at an angle and with a hinge pin so that the door is hingedly mounted on the fillet plate with the hinge axis inclined to the vertical.

3. A door according to claim 1 or claim 2, formed of a rigid material.

4. A door according to claim 1 or claim 2, formed of a flexible material.

5. A door according to any one of claims 1 to 4, formed of a transparent material.

6. A door according to any one of claims 1 to 5, formed as one of a pair of double doors.

7. A door substantially as hereinbefore described and illustrated with reference to the accompanying drawing.