Patent GB-443459-A (GB)
Title: Improvements in pressure fastening devices of the continuous type
IPC: A44B19/08
Filed: 1935-01-14
Abstract: 443,459. Fastenings. PODOLSKY, R., 6, Rue Basly, AsniÞres, Seine, France. Jan. 14, 1935, Nos. 1261 and 1262. Convention dates, Jan. 31, 1934 and May 29, 1934. [Class 44] A fastening comprising two flexible bands with continuous rows of male and female elements pressed into engagement to secure the bands together has male elements 5, Fig. 3, with a head of a heart-shaped cross-section and tapering both in height and width longitudinally, being thus somewhat of the shape of a shuttle. Preferably, the female elements comprise a rigid body portion with a slot 9 extending its full length and two lateral springs 10, distinct from the body, which project into the slot to engage the neck 6 of the male element. The elements may be riveted, clinched, or sewn to the bands. The female elements may have inwardly turned flanges at the top against which the springs jamb, thereby to offer a greater resistance when a direct lateral pull instead of a tilting movement is applied to open the fastening. The elements may be engaged and disengaged by a slider, by direct hand pressure, or by pressing one male element into engagement and thereafter pulling the chain of succeeding male elements through the channel formed by the female elements which in this form must have straight sides 12 as shown in Figs. 11, 15. -Where engagement is effected only by direct pressure, the aperture 9 of the female element may as shown in Fig. 5 correspond to the shuttle shape of the male element. The male elements are retained by springs such as 10, Fig. 5, or c, Figs. 11 and 15, which has limbs projecting at 13 through the sides 12 of the female element into the slot thereof to engage the top of the shuttle-shaped male element. The spring may instead be fitted internally in the female element or may be of a frame form and itself serve as the female element. The male elements may be formed into a chain by ball- and-socket connections at their ends or by a cord 64 passing longitudinally through them, Fig. 42. The female elements similarly may be connected together on cords or by links formed by the metal strip which is punched out to provide the apertures for the springs. The fastening may be operated by a laterally disposed slider, Figs. 27, 28, sliding along an auxiliary channel 29 in each female element and having a wedge member 33 entering beneath a side flange 35 on the male elements to disengage them in one direction of movement and having a presser plate 32 to effect their engagement in the other direction of movement. Fig. 47 shows, in section, a centrally disposed slider for operating the fastening. The slider head 67 is retained in the channel formed by the apertures of the female elements and is formed with cams 72 to displace the springs 60 and thereby to allow the shuttle-shaped male elements coming through the passage 69 in the slider to enter the channel formed by the female elements 57. The slider can be locked by the screw pin 74 engaging the male elements or by the eccentric 75 bearing on the female elements. An arrangement in which the fastening is engaged by a lateral hooking effect is shown in Fig. 20 where the male elements 18 are retained by the springs 20 in the female elements 21.