Patent GB-682828-A (GB)
Title: Improvements in or relating to windshield wipers
IPC: B60S1/38
Filed: 1950-12-01
Abstract: 682,828. Windscreen cleaners. TRICO PRODUCTS CORPORATION. Dec. 1, 1950 [Dec. 3, 1949], No. 29496/50. Class 138 (i). A windshield wiper comprises an elongated squeegee member, a holder therefor having longitudinally extensible and contractible sections slidable within a support attachable to a wiper arm, wherein the said sections provide full width support for the blade within the support over at least a part of the length of the blade. The holder 2, Fig. 4, loosely embracing a rubber or like squeegee 1, comprises two channelled sections 2' which are slidable with a channelled support 3 which is connectible to a bracket mountable on the wiper arm. As shown in Fig. 2 the sections 2' each have a back wall extension 11 overlapping one another within the support 3. In the fully extended positions the ends of the extensions are still arranged to given full width backing to the squeegee. The sections are adjustable in position as by detents 15 on the support 3 engaging in recesses 16 in the sections 2<SP>1</SP>. The side walls of the sections 2<SP>1</SP> may be coextensive with the extensions 11. In Fig. 2 however inset side walls of the support 3, as at 13, lie coplanar with the shortened side walls of the sections. The inset walls may be interrupted at intervals 14 to facilitate flexibility. In practice the squeegee will be of maximum length and this can be cut to suit a particular windscreen. The holder sections 2' will then be telescoped in the support 3 until stop walls 10 at the ends of the sections abut the ends of the squeegee following which the detents 15 will engage in their corresponding recesses 16. In a modification voids as at 12, Fig. 2, are avoided by utilizing sections having overlapping extensions which give full width backing in the fully extended positions. In this case the holder sides are continued with the extensions. When it is required to shorten the blade increments of the extensions may be broken away. When the sections have been so shortened full width backing of the squeegee is still maintained. In another modification the extensions are dispensed with and the channelled holder sections squarely abut one another at their inner ends within the support. Increments of the inner ends of these sections can be broken away. In a further embodiment, Figs. 7 and 8, two channelled supports 3c, carried by a bracket 4c connectible to a wiper arm, slidably receive a holder comprising three sections 2c which engage in grooves 26 in the sides of the squeegee 1c. The central section 2c has at each end extensions 11c interengaging with corresponding extensions 11c of the two outer sections 2c. The extensions 11c of the outer sections 2c are provided with a series of recesses 16c selectively engageable with detents 15c on the extensions 11c of the central section 2c. Each support 3c is secured in position by a spring detent 27 engaging in a corresponding recess in the central section extension 11c or vice versa. The channelled support may be a single unit as in Fig. 2 instead of the two spaced supports 3c. The end sections 2c may be joined by a transverse stop wall 10c.