T-section Astragal

Abstract

T-section for the edges of doors, windows, window and door frames and panels with a body having at its one end a bent over edge, positioned squarely on the body and at its other end at least one flange on the same side of the body as the bent over edge, an oblong casing being formed in the vicinity of at least one of the longitudinal ends of the section on the side of the bent over edge on the body of said section for housing an oblong sliding locking member.

Description

DISCUSSION OF THE PRIOR ART

The invention relates to a T-section for the edges of doors, windows, window and door frames and panels with a body having at its one end a bent over edge, positioned squarely on the body and at its other end at least one flange on the same side of the body as this bent over edge.

Such a section is known in itself. This section is particularly used in combination with an analogous but invertedly disposed section on the cooperating edges of double doors, e.g., folding doors.

In may cases it is often desired that on the upper, but mostly also on the lower side of such a door, a so-called "monkey" bolt is mounted, which is a locking member by which one of the doors can be fixed in the groove. So far, the provision of the monkey bolt, is supplied as a separate unit and consists of a rather wide prismatic housing in which a locking member is slidably mounted in the longitudinal direction, by cutting out a corresponding cavity in the door in which the monkey bolt can be received. The latter is then often via the front plate parts, extending in the longitudinal direction, secured to the material of the door by means of screws. The provision of cavities for accommodating the monkey bolt is a delicate job resulting in --even when the job is done with great care, that is to say without damaging the resting side part of the door-- a considerable weakening of said door. When a force is exerted perpendicular to the plane of the door on a door locked by means of monkey bolts this force will be transmitted via the housing of the monkey bolt to the upper and lower part of the already considerably weakened door owing to the provision of the monkey bolt. In practice it frequently occurs that folding doors having stood the cutting operation, required for the provision of the monkey bolt, without any damage appeared to be seriously damaged at the upper and lower end after having been supplied with said bolt.

SUMMARY OF THE INVENTION

It is an object of the invention to obviate these difficulties. According to the invention this is attained by providing in the vicinity of at least one of the longitudinal ends of the section on the side of the bent over edge on the body of the section an oblong casing, extending in the longitudinal direction of the body, in which an oblong locking member, slidable by one end to beyond the end of the section, is accommodated.

According to the invention the housing of the monkey bolt is therefore mounted on the T-section which is then disposed in such a way against the front end of the door that the body of the section is remote from the front end over a distance equal to the depth of the housing of the monkey bolt. The section can be secured in the usual way by means of screws, for which purpose the full width of the door is available, since it is no longer necessary to cut into the door before securing the monkey bolt, the risk of damage to the door during the former operation is eliminated so that the entire length of the door stays unimpaired. The section according to the invention ensures further a reinforcement and stiffening of the door.

Preferably an abutment face, turned towards the housing, is formed on the bent over edge, this face being situated parallel to the body of the section and tangential to the outer delimitation of the housing of the lock.

A preferred embodiment is characterised by the housing having a prismatic shape with a rectangular cross section and the locking member of generally prismatic shape being provided with a nose, protruding through an oblong recess in the body of the section, and with members for fixing the locking member in one of two possible positions.

It is clear that in the body now situated in spaced relationship from the front end of the door, also the latch and dead bolt can be provided, so that also this time consuming operation, moreover often damaging the door, can be omitted.

SURVEY OF THE DRAWINGS

FIG. 1 is a cross section through a pair of folding doors one of which is provided with a section according to the invention;

FIG. 2 is a longitudinal section on the line II--II in FIG. 1;

FIG. 3 is a front view of the section with the monkey bolt according to FIG. 1;

FIG. 4 is a back view of this section.

DESCRIPTION OF PREFERRED EMBODIMENTS

FIG. 1 shows in cross section two cooperating folding doors 1, 1a, the front sides 2, 2a of which each carrying a section 3, 3a. The section 3 is constructed in conformity to the invention; the section 3a is one known in itself. Each section 3, 3a consists of a body 4, 4a with a bent over edge 5, 5a with at the other end of the body 4, 4a respectively, a flange 6, 6a with an inwardly directed thickening 7, 7a respectively, and a second flange 8, 8a, respectively, with a thickening 9, 9a, respectively. According to the invention the housing 10 for a monkey bolt is formed on the body 4 of the section 3. This housing is constituted by two legs 11, 12 square with the body 4, the ends of the legs being bent over, so as to form two flanges 13, 14 facing one the other. Within the housing 10 is a prismatic space with a rectangular cross section in which a locking member 15 is disposed.

This locking member is represented in cross section in FIG. 2. As is shown in FIG. 1, it has a generally prismatic shape and it has on its front face a milled nose 16 which protrudes through an oblong opening 17, formed in the body 4, while in the back face four grooves 18, 19, 20, 21 are introduced. The distance between the grooves 18, 20 on the one hand, and 19, 21 on the other hand is equal, while the distance between the grooves 18 and 19 is equal to the one between the grooves 20 and 21 and determines the distance over which the locking member 15 in the housing 10 can be slid up and down. The grooves 18 to 20 cooperate with an oblong plate spring 22 with bent over ends 23, 24 which via the joggled square part 25 is fixed in a rectangular recess 26 in the back wall 14 and 13.

The presence of the abutment noses 27, 28 above and below the grooves 18, 21, respectively, limits the eventual path of motion of the locking member 15; from the position depicted in FIG. 2 the locking member can only be moved upwardly over a distance corresponding to the one between the grooves 18 and 19.

An inwardly directed abutment 29 is formed on the flange 5 of which the face 30, directed away from the body 4 is aligned with the outer face of the flanges 13, 14. When mounting the section against the front face of the door 1, this abutment face 30 determines together with the outer sides of the flanges 13, 14, the distance from the body 4 to the front face of the door. The section is fixed in the usual way by means of screws in the front face.

As is shown in the drawing, the door 1a is provided with a section 4a shaped such that the two sections cooperate in the way as known in itself.

The latch and dead bolt of the lock may be provided in the body 4 of the section, so that it is no longer necessary to cut out suitable recesses in the material of the door 1.

The invention provides a simple, efficient, inexpensive and labour-saving solution for the problem of providing a monkey bolt for mutually cooperating folding doors or french windows, thereby cancelling each necessity for trimming the doors.

Claims

What I claim is:

1. T-Section for the edge of a movable member comprising a body portion having a bent-over edge at one side positioned perpendicularly to said body and at its other side a flange extending perpendicularly thereto toward and away from the movable member and parallel to the bent-over edge, part of this bent-over edge and said flange enclosing the end of the movable member, an oblong casing being formed between the body portion and the movable member, said casing adapted to enclose a slidable oblong locking member, one end of which can protrude beyond the length of the T-section, said bent-over edge being provided with an abutment face directed toward the movable member, said section being unitary in construction of the same material and substantially inflexible.

2. A section according to claim 1 wherein the casing has a prismatic shape with a rectangular cross-section and the locking member is of generally prismatic shape and provided with a nose protruding through an oblong recess in the body of the section and with a member for fixing the lock in one of two possible positions.

3. A section according to claim 2 wherein said abutment face is flush with the movable member.

4. A section according to claim 3 wherein said flange has a thickening flush with a side of the movable member.

5. A section according to claim 4 wherein the movable member is a member from the group comprising a door, a window, a window frame, a door frame and a panel.

6. A section according to claim 5 wherein the fixing member is a spring which resiliently holds the locking member in a selected one of the two possible positions.