GB1163798A - Improvements in Window or the like stays - Google Patents

Abstract

1,163,798. Window stay. INTERLOCK INDUSTRIES Ltd. 13 July, .1967 [18 July, 1966; 24 Aug., 1966; 4 Nov., 1966], No. 32380/67. Heading E2F. A window or like stay comprises a first plate 10 adapted for attaching to a frame of a window, two arms 12 and 13 of different lengths each pivoted at one end to the plate 10 and at the other end to a second plate 14, adapted for attaching to a sash of the window, and self-lubricating plastic bushings 21 located at pivot points 16 of the arms, each pivot point being recessed in a housing in the particular arm so that under sufficient pressure the rotary frictional contact produced 'will support the window at any desired position. As shown in Fig. 7, at each pivot point 16 each pivot housing is counterbored from both faces of the respective arms 12 and. 13 to a depth so as to have a clearance under the head of the metal rivet 18. As the shank .of each rivet 18 is smaller than the central clearance hole in the arm 12 and 13, a plastics e.g. nylon bushing 21 may be forced down into the countersinks and around the rivet shank to prevent the metal rivet touching its metal supporting arm. A lock washer 19 is provided on the underside of the tail 20 of the rivet 18 to prevent the latter from turning. Alternatively, a wearresistant washer may be provided between the tail 20 and the fixed plate 10 Of 14. In a modification for a split rail sash '(Figs. 2 and 3, not shown), the sides of a section .of the plate 10 are turned up to form a track in which a shoe 23 pivoted at one end of the upper arm 13 can slide between a top friction point 25 and a stop 26 on the plate 10.