GB1582370A - Curtain slide - Google Patents

Description

(54) A CURTAIN SLIDE (71) We, A/S CHR. FABER, RYSLINGE, a company organized under the laws of Denmark, of DK-5856 Ryslinge, Denmark, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it 55 to be performed, to be particularly described in and by the following statement: This invention relates to a curtain slide comprising an upper portion constructed with a sliding head for sliding engagement with a lateral, longitudinal guiding slot of a horizontal hollow curtain rail, and a lower portion comprising a stem rigidly connected with said upper portion and depending vertically along the outer face of the rail and provided at its lower end with means for direct attachment to the upper edge of a curtain.

A curtain slide of the kind described is shown in which the stem extends vertically beyond the sliding head to form a supporting surface for support against the outer wall of the rail above the slot, while the stem is constructed at its lower end with a single upwardly directed hook. To engage this slide with the slot, it must be put into the slot in a position substantially parallel to the slot and thereafter turned about 90" to vertically depending position. The curtain may then be suspended by sliding a border tape pocket at the edge of the curtain up along the stem and then lowering it into engagement behind the hook.If an attempt is made of first putting all the slides into position in the border tape pockets and then engaging the slides with the slot of the curtain rail, this involves twisting of a marginal portion of the curtain every time a slide is turned to horizontal position to be engaged with the slot. This is troublesome and may result in irregular creasing of the curtain, and besides there is a danger that in the process of engaging one slide with the slot of the curtain rail, an adjacent slide which has already been so engaged may be disengaged either from the slot or from the curtain. The whole operation becomes particularly difficult if the curtain rail is mounted in a concealed position.

According to the invention, there is provided a curtain slide comprising an upper portion constructed with a sliding head for sliding engagement with a lateral, longitudinal guiding slot of a horizontal hollow curtain rail, and a lower portion comprising a stem rigidly connected with said upper portion and depending vertically along the outer face of the rail and provided at its lower end with means for direct attachment to the upper edge of a curtain, said sliding head extending laterally from the top of said stem and being so shaped that it can be engaged with said slot by a generally inwardly and upwardly directed pushing movement in through the slot in a plane transverse of the guiding rail followed by a downward movement and tilting back to vertical position of the slide, and when disposed in such a transverse plane or within a predetermined angular deviation therefrom, can only be removed from the curtain rail by the reverse movements in the reverse order, said sliding head being constructed at its end laterally remote from the stem with two oppositely directed projections, the distance between the outer ends of said projections being greater than the slot width a and smaller than the height of the inner space of the curtain rail. By this construction, the advantage is obtained that the slides can very conveniently be engaged with the curtain rail and still are very unlikely to become involuntarily disengaged from the rail by movements to which the curtain slides may be subjected by drawing to and fro of the curtain.Thus the slides may easily be engaged with the curtain rail after they have all been attached to the edge of the curtain, because the slides can be engaged in their "natural" position, i.e. in a vertical plane perpendicular to the curtain rail. This operation does not involve any twisting of a marginal portion of the curtain and there is no danger that the operation of engaging one slide will cause disengaged ment of an adjacent slide because the said vertical projections lock the curtain slides against disengagement by a mere tilting motion. The slides may therefore also be engaged in any desired order, e.g. starting with the end slides, and when successively engaging the slides one may at the same time arrange the curtain in folds as desired.

When the curtain is to be washed or cleaned, it is not necessary to remove the slides, if these are made from a material that is resistant to washing or cleaning. Also where the curtain rail is mounted in a concealed position it is easy to engage the slides with the curtain rail, because all one has to do is to grip the slides at the lower end and to push their upper ends directly through the slot of the curtain rail, and as mentioned above, once a slide has been engaged, there is practically no danger that it may be disengaged when engaging the next slide.

In a preferred embodiment of the invention, the maximum depth n of the upper portion in the direction of lateral extension of the sliding head is smaller than both the width a of the guiding slot and the depth b of the inner space of the curtain rail, and the distance between the outer ends of the ba vertical projections being smaller than n n and the maximum distance from any point of the underside of the head behind the downwardly directed projection to the upper side of the head behind the upwardly directed projection is smaller than the slot width.

The indicated maximum distance between the ends of the vertical projections follows from a geometrical analysis showing that if the distance is made greater than indicated, the slide may possibly become jammed in the curtain rail in the process of introducing the head of the slide through the slot of the curtain rail. If on the other hand the condition specified is fulfilled, the slide can be introduced easily, and since the slide does not comprise any portion to engage the upper portion of the curtain rail above the guiding slot from the outside, there is no need to construct the slide with special guiding flanges, and it may therefore be made very narrow. Preferably, the slide is narrower than the maximum depth of the upper portion as defined, and ever, in its entirety as narrow as the stem of the lower portion.Curtains provided with such slides may therefore be contracted to occupy much less space in the longitudinal direction of the curtain rail than when using slides of conventional type. The saving. of space may amount to as much as 50%.

Preferably, the maximum depth of the upper portion as defined is between 50% and 90% of the width of the guiding slot.

With this arrangement the slide may be introduced into the guiding slot in a path forming an angle of between 30 and 60 with a vertical plane along the guiding slot so that the upper portion can be introduced into the slot obliquely from below, whereby the required free space for handling the slide becomes smaller than if the slide had to be introduced horizontally into the slot.

This is particularly of importance when the curtain rail is in a position out of eyesight of the person hanging up the curtain.

Advantageously, the distance from the lower end of the downwardly directed projection to any point of the upper side of the upper portion is greater than the slot width. Thereby the advantage is obtained that when the slide is in its normal engaged position with the stem depending vertically or practically vertically from the head it cannot be disengaged from the guiding slot, even if e.g. during the hanging-up the curtain a certain upward force is exerted on the slide.

If the distance from the upper end of the upwardly directed projection to any point of the underside of the head is greater than the slot width, the slide may be swung a considerable angle in the lateral direction before the upwardly directed projection may be disengaged from the upper edge of the slot.

The possible swing may be kept within the limits preventing disengagement by providing the stem with a guiding arm under and extending parallel to the head, the length of the guiding arm being greater than or equal to the lateral length of the head as measured from the inner face of the stem, the distance of the guiding arm from the underside of the head being between m and me , where m is the height of the lower a where m is the height of the lower slot edge above the underface of the curtain rail, and e is the maximum distance from the underside of the head behind the downwardly directed projection to the upper end of the upwardly directed projection.

The attachment of the curtain to the lower part of the slide may be effected in various ways. In one embodiment of the invention, a vertical hinging pin for engagement with a pocket of a border tape pocket of a curtain, permitting said pocket to turn freely, is provided under the guiding arm in rigid connection therewith, said hinging pin being parallelly displaced from the stem and located substantially vertically under the downwardly extending projection of the upper portion, the hinging pin being provided with a hook extending upwards parallel to the pin from the lower end thereof and a hook extending downwards parallel to the pin from the upper end thereof, the hook ends having a mutual spacing suitable for introducing the free wall of the border tape pocket into the narrow space formed between the hinging pin and the two hooks.

Hereby the advantage is obtained that the border tape pocket is held non-displaceably in the longitudinal direction of the hinging pin.

Moreover, the slide is relatively rigidly connected with the curtain against mutual rotation about an axis parallel to the direction of lateral extension of the head, whereby the curtain in addition to its weight exerts a moment of rotation on the slide tending to maintain the slide in position with the stem depending vertically when the curtain is drawn or drawn back. Hereby the friction against movement of the curtain along the curtain rail is reduced, because the surfaces of the slide serving to limit its swing about the direction of lateral extension of the head become engaged only in the case of rather violent movements of the curtain.Moreover, the lifting of the curtain due to swing of the slides is reduced so that there is less danger that the curtain material itself is caused to slide along the curtain rail than is the case with the known slide mentioned above having only one, upwardly directed hook, but no downwardly directed hook.

In another embodiment a stitching plate in the form of a foil or a network is provided between the guiding arm and a downward extension of the stem. Thereby the attachment of the slide to the curtain is further improved and the slide is still more rigidly held in position perpendicular to the edge of the curtain. Moreover, it becomes possible by means of the slides to hold the curtain in pre-arranged permanent folds, which extend practically perpendicularly to the curtain rail.

In a further embodiment, as an alternative to the hinging pin or stitching plate, the stem may be provided with a downward extension which is constructed with barbed teeth, a tongue extending downwards from the guiding arm at a spacing from and parallel to the extension and likewise provided with barbed teeth, the barbed teeth facing each other, but being mutually displaced, the height of the barbed teeth being greater than half the distance between the extension and the tongue. In this case the slide may be attached to the curtain just by a sliding movement and is then automatically maintained in position by the barbed teeth.This attachment may take place quite independently of any drawing string, and the embodiment is particularly suitable in connction with pre-folded curtains where the curtain head is made with single, double or multiple folds, which as a consequence of the particular form of attachment of the slides can be sewn entirely as desired with no regard to drawing strings. border tapes, etc. Upon sewing of the pre-folded curtain the tongue is simply introduced into the interior of the protruding folds with the extension of the stem engaging on the rear side of the curtain in the sewing area of the fold.

The invention will now be described in further detail with reference to the accompanying drawing illustrating various embodiments of the invention, and in which Fig. 1 shows one form of a slide according to the invention in the process of being introduced into the guiding slot of a curtain rail, as viewed in a direction parallel to the curtain rail with a selection through the curtain rail, Fig. 2 the slide of Fig. 1 after its upper portion has just been passed through the guiding slot, Fig. 3 the slide of Figs. 1 and 2 in fully engaged position, Fig. 4 the parts illustrated in Fig. 3 as viewed from the right in Fig. 3, Fig. 5 another embodiment in which the shape of the slide head is slightly modified, Fig. 6 a further embodiment in which the lower portion of the slide is modified, Fig. 7 a still further embodiment in which the lower portion of the slide is constructed in the form of a clip with barbed teeth, and Fig. 8 a perspective view of the slide of Fig. 7 in the process of introducing a fold of a pre-folded curtain into the clip formed by the lower portion of the slide.

In Fig. 1, the upper edge of a curtain 1 is hingedly attached, by means of a border tape forming a border tape pocket, to a hinging pin 3 of a lower portion 4 of a curtain slide 6 made from a plastics material.

The hinging pin 3 is provided with a hook 8 extending upwards parallel to the pin from the lower end thereof and a hook 10 extending downwards parallel to the pin from the upper end thereof. The hook ends have a mutual distance suitable for introducing the free wall of the border tape pocket into the narrow space 12 formed between the hinging pin 3 and the two hooks 8, 10.

The hinging pin 3 and the downwardly extending hook 10 are connected with a horizontally extending guiding arm 14, which is again connected with an upwardly extending stem 16. The stem 16 is connected at its upper end with an upper portion 18 of the slide which is constructed with a sliding head 20 extending laterally from the top of the stem and being provided at its end laterally remote from the stem 16 with two oppositely directed vertical projections 22, 23.

The upper portion 18 is adapted to be introduced through a lateral longitudinal guiding slot 24 of a horizontal hollow curtain rail 26. The width c, Fig. 4, of the sliding head 20 is smaller than the width a, Fig. 1, of the guiding slot 24, and the mutual distance h, Fig. 6, of the outer ends of the vertical projections 22, 23 is greater than the slot width a and smaller than the height of the inner space of the curtain rail 28.

The stem 16 depends from the outer face of the upper portion 18. The maximum depth n, Figs. 6 and 7, of the upper portion 18 in the direction of lateral extension of the head 20 is smaller than the slot width a, Fig. 1, so that the upper portion can at least be introduced horizonally into the slot 24, and the maximum depth n, Figs. 6 and 7, is also smaller than the depth b, Fig. 1, of the inner space 28 of the curtain rail, which permits the upper portion 18 to be turned through a certain angle within the inner space 28 of the curtain rail 26 from the position of introduction shown in Fig. 1 via the position shown in Fig. 2 to the fully engaged position shown in Fig. 3.Moreover, the distance h, Fig. 6, between the outer ends of the vertical projections 22, 23 ba is smaller than to ensure that the whole n of the upper portion 18 can be introduced without jamming through the guiding slot 24 into the inner space 28 of the curtain rail 26 before it is turned to its engaged position. The maximum distance d, Fig.

4, from any point of the underside of the head 20 behind the downwardly projecting extension 23 to the upper side of the upper portion 18 behind the upwardly extending projection 22 is smaller than the slot width a, Fig. 1, so that the upper portion 18 may not at any inclination be jammed between the edges of the guiding slot 24 in the normal engaged position of the slide.

In Fig. 1, the slide 6 is introduced through the guiding slot 24 in the direction of the arrow, so that the downwardly directed projection 23 passes by the lower edge of the guiding slot 24 whereafter the slide 6 may be released and permitted to drop to the vertical position shown in Fig. 3 where the point of support of the curtain on the slide, which is located at the bottom of the narrow space 12, is present vertically below the area of the underside of the head 20 located between the projection 23 and the stem 16.

Fig. 4 shows the parts in the position of Fig. 3, as viewed from theright. However, the curtain 1 with its border tape 2 is omitted. The maximum width c, Fig. 4, of the upper portion 18 perpendicularly to both the stem 16 and the direction of lateral extension of the head 20 is smaller than the slot width a, Fig. 1. As indicated by dotdash lines, the slide 6 can swing about the head 20 through a certain angle which is determined by the distance k, Fig. 6, between the underside of the head 20 and the uDperside of the guiding arm 14, If the distance k, Fig. 6 corresponds to the distance m, Fig. 4, of the guiding slot from the underside of the curtain rail 1, practically no swing about the head 20 is permitted, but when the distance k, Fig. 6, is increased, the possible swing of the slide 6 becomes correspondingly greater.The distance k, Fig. 6, is so selected that when the swing of the slide 6 about the head 20 reaches its outer limit in either direction, the upwardly directed projection 22 has not yet got below the upper edge of the guiding slot 24 so that the slide cannot be tilted out of engagement with the slot 24. A geometrical analysis shows that this condition is fulfilled if me k < a A modified form of the upper portion 18 of the slide 6 is shown in Fig. 5, where the end face of the head 20 remote from the stem 16 is constructed with a recess 30 extending parallel to the guiding slot 24.

Owing to this recess 30 the upper portion 18 may be introduced through the guiding slot 24 at a still steeper angle in the embodiment of Figs. 1-3, and besides there is a certain saving of material.

Fig. 6 shows a further form of the slide 6 which is intended for stitching to the upper edge of the curtain, while at the same time forming permanent folds in the curtain 1. For this purpose a stitching plate 34 consisting of a network is provided in the rectangular space between the guiding arm 14 and a downward extension 32 of the stem 16. The curtain may be firmly secured to the slide 6 by stitches through the meshes of the network, and thereby the curtain will contribute to maintaining the slide in a vertical position, both by its weight and by the movement of rotation to which it subjects the slide, thereby reducing the swing of the slide during drawing of the curtain in either direction. Also in this case the guiding arm 14 serves, in co-operation with the underside of the curtain rail, to set an upper limit to this swing. The extension 34 of the stem 16 forms a part suitable for being firmly gripped by the operator in introducing a slide 6 into the inner space 28 of the curtain rail 26 and withdrawing it therefrorn. The stitching plate 34 may alternatively be in the form of a foil which is suspended between the guiding arm 14 and the extension 2 and has a thickness permitting easy stitching of the curtain thereto and a strength such that it cannot be torn by normal sewing threads with normal stitch lengths.The stitching plate, which preferably consists of the same material as and is moulded in one piece with the rest of the slide 6, may alternatively be united with the curtain by an adhesive or by heat sealing, which is particularly imDortant in the case of industrially ready-made curtains which the consumer then only has to shorten in accordance with the height they are to have at the place of use.

The maximum width c, Fig. 4, of the upper portion 18 perpendicularly to both the longitudinal direction of the stem 16 and the direction of lateral extension of the head 20 is smaller than the slot width a, Fig. 1, and preferably smaller than the maximum depth n, Figs. 6 and 7, of the upper portion 18. In the latter case the upper portion 18 of the slide 6 may be introduced through the guiding slot 24 in two different angular positions which further facilitates this introduction. The maximum vertical dimension A, Fig. 6, of the head 20 behind the projections 22 and 23 is preferably greater than the maximum width c, Fig. 4, of the upper portion 18 and the maximum depth n, Figs.

5 and 6, of the upper portion 18 is preferably between 60 and 90% of the width a, Fig. 1, of the guiding slot 24.

The distance from the upper end of the downwardly directed projection 23 to any point of the upper side of the upper portion 18 is greater than the slot width a, Fig.

1, and the distance from the upper end of the upwardly directed projection 22 to any point of the underside of the head 20 is greater than the slot width a.

In a still further embodiment of the invention, the hinging pin 3 or the stitching plate 34 of the lower portion 4 of the slide 6 may as shown in Figs. 7 and 8 be replaced by a downward extension 32 of the stem 16 which is constructed with! upwardly directed barbed teeth 36, and a tongue 40 extending downwards from the guiding arm 14 at a spacing from and parallel to the extension 32 and likewise provided with barbed teeth 38, the barbed teeth 36 and 38 facing each other, but being mutually displaced, the height of the barbed teeth 36, 38 being greater than half the distance 42 between the extension 32 and the tongue 40. Thereby the slide 6 may be attached to the upper edge of the curtain 1 by sliding the latter into the said space 42, whereby the barbed teeth on both sides of the curtain engage the latter and prevents it from sliding out of the space 42.This attachment may take place quite independently of any border tape or drawing string, and the embodiment is particularly suitable in connection with pre-folded curtains, where the curtain head is made with single, double or multiple folds 44 which as a consequence of the particular form of attachment of the slides can be sewn entirely as desired with no regard to drawing strings, border tapes, etc.

Upon sewing of the pre-folded curtain, the tongue 40 is simply introduced into the interior of the protruding folds 44 with the extension 32 of the stem engaging the rear l side of the curtain in the sewing area of the fold As appears from Fig. 8, the barbed teeth 38 of the tongue 40 are pointed so that they may penetrate through the curtain material or subject it to a strong local deformation, while the barbed teeth of the extension 32 have the same width as the extension and thereby serve only to press the material into engagement with the other set of barbed teeth 38. When the tongue 40 is introduced into the interior of the fold 44, the pointed teeth 38 are guided by he fold along the seam of the fold and may possibly penetrate through the seam to engage the seaming threads.

WHAT WE CLAIM IS:- 1. A curtain slide comprising an upper portion constructed with a sliding head for sliding engagement with a lateral, longi tudinal guiding slot of a horizontal hollow curtain rail, and a lower portion comprising a stem rigidly connected with said upper portion and depending vertically along the outer face of the rail and provided at its lower end with means for direct attachment to the upper edge of a curtain, said sliding head extending laterally from the top. of said stem and being so shaped that it can be engaged with said slot by a generally in wardly and upwardly directed pushing move ment in through the slot in a plane trans verse of the guiding rail followed by a downward movement and tilting back to vertical position of the slide, and, when dis posed in such a transverse plane or within a predetermined angular deviation therefrom, can only be removed from the curtain rail by the reverse movements in the reverse order, said sliding head being constructed at its end laterally remote from the stem with two oppositely directed projections, the distance between the outer ends of said pro jections being greater than the slot width a and smaller than the height of the inner space of the curtain rail.

2. A curtain slide as in Claim 1, in which the maximum depth n of the upper portion in the direction of' lateral extension of the sliding head is smaller than both the width a of the guiding slot and the depth b of the inner space of the curtain rail, the distance between the outer ends of the vertical pro ba jections being smaller than , and the n maximum distance from any point of the underside of the head behind the down wardly directed projection to the upper side of the head behind the upwardly directed projection being smaller than the slot width a.

3. A curtain slide as in Claim 2, in which the maximum depth n of the upper portion

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

Claims (1)

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

   which the consumer then only has to shorten in accordance with the height they are to have at the place of use.

   The maximum width c, Fig. 4, of the upper portion 18 perpendicularly to both the longitudinal direction of the stem 16 and the direction of lateral extension of the head 20 is smaller than the slot width a, Fig. 1, and preferably smaller than the maximum depth n, Figs. 6 and 7, of the upper portion 18. In the latter case the upper portion 18 of the slide 6 may be introduced through the guiding slot 24 in two different angular positions which further facilitates this introduction. The maximum vertical dimension A, Fig. 6, of the head 20 behind the projections 22 and 23 is preferably greater than the maximum width c, Fig. 4, of the upper portion 18 and the maximum depth n, Figs.

   5 and 6, of the upper portion 18 is preferably between 60 and 90% of the width a, Fig. 1, of the guiding slot 24.

   The distance from the upper end of the downwardly directed projection 23 to any point of the upper side of the upper portion 18 is greater than the slot width a, Fig.

   1, and the distance from the upper end of the upwardly directed projection 22 to any point of the underside of the head 20 is greater than the slot width a.

   In a still further embodiment of the invention, the hinging pin 3 or the stitching plate 34 of the lower portion 4 of the slide 6 may as shown in Figs. 7 and 8 be replaced by a downward extension 32 of the stem

   16 which is constructed with! upwardly directed barbed teeth 36, and a tongue 40 extending downwards from the guiding arm

   14 at a spacing from and parallel to the extension 32 and likewise provided with barbed teeth 38, the barbed teeth 36 and 38 facing each other, but being mutually displaced, the height of the barbed teeth 36, 38 being greater than half the distance 42 between the extension 32 and the tongue 40. Thereby the slide 6 may be attached to the upper edge of the curtain 1 by sliding the latter into the said space 42, whereby the barbed teeth on both sides of the curtain engage the latter and prevents it from sliding out of the space 42.This attachment may take place quite independently of any border tape or drawing string, and the embodiment is particularly suitable in connection with pre-folded curtains, where the curtain head is made with single, double or multiple folds 44 which as a consequence of the particular form of attachment of the slides can be sewn entirely as desired with no regard to drawing strings, border tapes, etc.

   Upon sewing of the pre-folded curtain, the tongue 40 is simply introduced into the interior of the protruding folds 44 with the extension 32 of the stem engaging the rear l side of the curtain in the sewing area of the fold As appears from Fig. 8, the barbed teeth

   38 of the tongue 40 are pointed so that they may penetrate through the curtain material or subject it to a strong local deformation, while the barbed teeth of the extension 32 have the same width as the extension and thereby serve only to press the material into engagement with the other set of barbed teeth 38. When the tongue 40 is introduced into the interior of the fold 44, the pointed teeth 38 are guided by he fold along the seam of the fold and may possibly penetrate through the seam to engage the seaming threads.

   WHAT WE CLAIM IS:- 1. A curtain slide comprising an upper portion constructed with a sliding head for sliding engagement with a lateral, longi tudinal guiding slot of a horizontal hollow curtain rail, and a lower portion comprising a stem rigidly connected with said upper portion and depending vertically along the outer face of the rail and provided at its lower end with means for direct attachment to the upper edge of a curtain, said sliding head extending laterally from the top. of said stem and being so shaped that it can be engaged with said slot by a generally in wardly and upwardly directed pushing move ment in through the slot in a plane trans verse of the guiding rail followed by a downward movement and tilting back to vertical position of the slide, and, when dis posed in such a transverse plane or within a predetermined angular deviation therefrom, can only be removed from the curtain rail by the reverse movements in the reverse order, said sliding head being constructed at its end laterally remote from the stem with two oppositely directed projections, the distance between the outer ends of said pro jections being greater than the slot width a and smaller than the height of the inner space of the curtain rail.

   2. A curtain slide as in Claim 1, in which the maximum depth n of the upper portion in the direction of' lateral extension of the sliding head is smaller than both the width a of the guiding slot and the depth b of the inner space of the curtain rail, the distance between the outer ends of the vertical pro ba jections being smaller than , and the n maximum distance from any point of the underside of the head behind the down wardly directed projection to the upper side of the head behind the upwardly directed projection being smaller than the slot width a.

   3. A curtain slide as in Claim 2, in which the maximum depth n of the upper portion

   is between 50 and 90% of the width a of the guiding slot.

   4. A curtain slide as in any of Claims 1-3, in which the maximum width of the upper portion perpendicularly to both the longitudinal direction of the stem and the direction of lateral extension of the sliding head is smaller than the slot width a and preferably smaller than the maximum depth of the upper portion.

   5. A curtain slide as in any of the beforegoing claims, in which the maximum transverse dimension of the head in a vertical direction is greater than the maximum width of the upper portion.

   6. A curtain slide as in any of Claims 2-5, in which the distance from the lower end of the downwardly directed projection to any point of the upper side of the upper portion is greater than the slot width a.

   7. A curtain slide as in any of Claims 2-5, in which the distance from the upper end of the upwardly directed projection to any point of the underside of the head is greater than the slot width a.

   8. A curtain slide as in any of the beforegoing claims, in which the stem is provided with a guiding arm under and extending parallel to the head, the length of the guiding arm being greater than or equal to the lateral length of the head as measured from the inner face of the stem, the distance of guiding arm from the underside of the me head being between m and a where m a is the height of the lower slot edge above the underface of the curtain rail, and e is the maximum distance from the underside of the head behind the downwardly directed projection to the upper end of the upwardly directed projection.

   9. A curtain slide as in Claim 8, in which a vertical hinging pin for engagement with a pocket of a border tape of a curtain, permitting said pocket to turn freely, is provided under the guiding arm in rigid connection therewith, said hinging pin being parallelly displaced from the stem and located substantially vertically under the downwardly extending projection of the upper portion, the hinging pin being provided with a hook extending upwards parallel to the pin from the lower end thereof and -a hook extending downwards parallel to the pin from the upper end thereof, the hook ends having a mutual spacing suitable for introducing the free wall of the border tape pocket into the narrow space formed between the hinging pin and the two hooks.

   10. A curtain slide as in claim 8, in which a stitching plate in the form of a foil or a network is provided between the guiding arm and a downward extension of the stem.

   11. A curtain slide as in Claim 8, characterized by the provision of a downward extension of the stem, said extension being constructed with barbed teeth, and a tongue extending downwards from the guiding arm at a spacing from and parallel to the extension and likewise provided with barbed teeth, the barbed teeth facing each other, but being mutually displaced, the height of the barbed teeth being greater than half the distance between the extnsion and the tongue.

   12. A curtain slide as in Claim 11, in which the barbed teeth of one set are pointed.

   13. A curtain slide as described with reference to Fig. 1-4.

   14. A curtain slide as described with reference to Fig. 5.

   15. A curtain slide as described with reference to Fig. 6.

   16. A curtain slide as described with reference to Figs. 7 and 8.