IL25335A - Stringer for sliding clasp fastener - Google Patents

Description

A or a sliding fastener Supl Etabl sseraent slider for a sliding fastener Su his relates to a stringer for a the of form series engage through of by the omission of parallel to one edge inner of the stringer invention also relates to such fasteners and are preferably of loops are threads of a stringer tape having a folded so that the ner elements of a se es of are retained at a distance the said this calls for extra tching operation and siso the fastener slider be guided stringer the result being of course is an of the invention to attach series of fastener to a stringer tape so that the necessity for or glueing or the like is and the slider runs on According to the present invention there is provided for a sliding clasp the fastener elements of which form a series of loops engage through a series of gaps by the omission of to and adjacent one edge inner of the stringer characterised in that the narrow inner portion which is separated by the series of gaps from the wider outer of the stringer tape is bent over the loops of the elements and is narrower than the length of said in one when the narrow inner ortion of the ta e is turned the base of the said portion only if at over said in another said portion is folded over the head of the fastener it or covers the said head t e side parts of the fastener elements projecting from the stringer tape are provided with to quite stare that the elements cannot out of the gaps when of elements are vey and suitable tape can be produced omitting a number of warp threads when the as to fora adjacent one inner of the tape a portion which contains only weft between the weft threads forming the Farthe according to the invention there is provided a of stringer as forth in which the fastene elements are forced into the series of gaps in the stringer tape by brushes with resilient or by fluid Farther according to the invention there is provided of a sliding clasp fastener comprising two stringers asset forth characterised in that the two mutually engaged series of fastener elements are first then joined separately and simultaneously to the stringer and finally with one There is also illustrated an apparatus for manufacturing sliding clasp fastener as set forth including a pair of feed rolls rotatable in opposite directions for two mutually engaged series of fastener the rolls being used to separate the two series of fastener elements adjoined either side and for connecting the series of fastener rents followed by a folding apparatus pair of notched rollers for protuberances on the side parts of the invention is illustrated by way of in the accompanying Figure 1 is a plan view of a portion of a gaps weft threads the inner the edge which is folded over 2 is a to an enlarged of a portio of the stringer into which a series of fastener elements has been Figure 3 is a partial an enlarged through sliding fastener to the which has left the tape folding apparatus and is in a pressing apparatus shown Figure is a of a sliding clasp fastener according to the invention after has the pressing apparatus illustrated Figure Figure is a view of apparatus for facturing a p fastener according to the Figure 6 a partial section through a device for ting the weft threads of stringer tape between the fastener elements the series of elements hy Figure 7 is section through leaving the pressing Figure 8 through coupled after leaving the device in which the fastener Figure 9 is s through the coupled sliding clasp fastener it left the Figure 10 is a corresponding to a Figure 1 shows a portion of a stringer tape in gaps 2 are left the individual we t threads the omission of a of A portion 3 gaps 2 rates a portion on the inner edg of the tape from a wide outer portion to Figure two coupled series of fastener elements are supplied to a guide channel 9 of the apparatus in direction shown arrow series of fastener elements pass two feed rolls 11 formed guide grooves and rotating in opposite directions and are separated en they pass a The individual series of fastener elements ere then guided to opposite sides to pressing apparatus 13t abutments pressure in the form of brushed with resilient bristles of fine or plastics vires the which a actuated by to a continuous series of impacting perpendicularly to the abutments the time the stringer tapes 9 are so that they pass through the apparatus together the series of fastener The 12 the roils st eac of elements reaches brush 16 is greater about one half of periphery of each feed pressing apparatus the the gaps 2 ia the stringer tape pass the fastener which form connected series of the feeing in Figure that the 20 are pushed through the 2 with thei heads 21 shown the or of elements is then ia the portion 3 of the stringer tape In that condition two series of fastener elements disposed in the stringer tapes are guided around guide rollers 23 respectively to a device 2k in elements 20 two interconnected of fastener which disposed in stringer tapes 19 leave the device in the shown in Figure then enter a folding apparatus 25 in which the stringer tapes are folded so the wide outer portions of the tapes lie in the leaves the folding the clasp fastener has substantially the shown in Figure then enters a apparatus as shorn in Figure pair of notched rollers 28 which with side parts of the fastener elements projecting the stringer tape and produee the deformed portions 29 on side To facilitate of the plasties elements the pressure rollers be Of course can be substituted for the pressure Alternatively the projecting parts of the fastener have portions 2 te ther n Th aid o t n 2 revent the fastener element from pallet out of the gap the stringer the of base of the Figure a plan of a after leaving the pressing described the better understanding of the the elements the series of the right are hatched as as deformed portions 29 in the series of elements on pressing fastener at a roller finished fastener is the rollers of the apparatus have drive are synchronised the speed of the Figure 6 also the possibility forcing threads the of the the stringer into the intervals series 32 o fastener elements notch 33 o which earn be supplied in the a atresia through one or sore Figure 10 clasp leaving the foiling apparatus is simila the fastener in Figure the exception that in 10 the narrow portion o the supporting strip is folded inwardly by the folding so that the head ends of the fastener elements are or partially this moreover the base ends of the fastene remote the heads left to guide fastener insufficientOCRQuality

Claims (1)

A for a clasp the fastener elements of which form a connected series of loops vhich cngnge through a series of gaps the omission of threads parallel and one inner of the stringer characterised in that the narrow inner portion which is separated the series of gaps from the outer portion the stringer tape is bent over the loops of the elements and narrower than the length of said so in one when the narrow inne portion of the is turned over the base of the fastener elements said portion extends only if at over another whe said portion is folded over the head ends f the fastener said portion completely or partiall covers the said head A stringer as set forth in claim characterised that the side parts of the fastener elements projecting from the stringer tape are provided with A of a stringer according to either preceding characterised in that the fastener forced into the series of gaps in the stringer tape by brushes with resilient A of manufacturing a stringer according to Claim 1 or characterised in that the fastener elements are forced into the series of gaps in the stringer tape by fluid as set claim characterised in the brushes are so that they a series of impacting aoveaents against the stringe tape and fastene perpendicular to past which the said stringer tape and fastener elements are caused to A method as set forth in one of claims 3 to characterised in that after the fastener elements been forced into the gaps two stringers are connected and the stringer tapes are folded to produce sliding clasp A set forth in any one of claims 3 to characterised in that protuberances are formed on the side parts of the fastener elements local heating method of manufacturing a sl iding clasp fastener comprising two stringers each according to

1. Claim 1 or 2f characterised in that the two mutually engaged series of fastene elements are first then joined separately and to the stringer tapes and finally one stringer for a clasp fastener constructed and arranged substantially as described with reference to and as shown in Figures 1 and 7 of the accompan sl iding clasp fastener constructed and arranged tially as described herein with reference to and as shown in Figures 8 and or of the accompan insufficientOCRQuality