Patent GB-1096075-A (GB)
Title: Actuator for a drive linkage for furniture for selectively opening windows and doors
IPC: E05D15/52
Filed: 1965-01-28
Abstract: 1,096,075. Actuators for door and window fastenings. G. FRANK [trading as JAGERFRANK, KOMM GESS]. Jan. 28, 1965 [Feb. 1, 1964], No. 3751/65. Heading E2A. An actuator for drive linkage for furniture for selectively opening windows or doors about vertical and horizontal axes comprises a handle member for operating an actuator rod for the linkage, the handle member being mounted in a fixing rose for rotation between selected limits and having a stop plate disposed on the actuator rod and in the rose for rotation with the handle member, and a manual control element for moving an associated abutment selectively into the zone of movement of an abutment on the stop plate for co-operation with the later abutment to establish an intermediate limit of rotation of the handle member and out of such zone for avoiding such cooperation. In the construction shown in Figs. 2 and 8 the handle member 3 is provided with a square section spindle 8 which engages a corresponding hole in the stop plate 10 and the stop plate has a projection 14 the opposite sides of which 15 and 16 constitute abutments. The manual control element is a rocker 21 which rocks on a rear cover plate for the rose and which protrudes through an aperture in the front plate of the rose. The rocker has two lateral projections 19, 20, facing surfaces of which constitute abutments engageable by the abutments 15, 16 of the stop plate. When the rocker is in one position the abutment 16 engages the abutment of projection 20 and anti-clockwise movement of the handle member from the position shown in Fig. 2 is prevented so that the handle member can only be moved from the Fig. 2 position 90‹ clockwise, the projection 14 passing under the pro-  jection 19 to achieve this. When the rocker is in its other position clockwise movement of the handle member from the Fig. 2 position is prevented and it can only be moved anti-clockwise through 90‹ from the Fig. 2 position and back again. Tongues on a blade spring (not shown) hold the rocker in either of its alternative positions and a screw 30 is provided which can be moved inwardly to engage either of a pair of recesses in the rocker to lock it in one or other position In a second construction Fig. 9, a rose 31 rotatably mounts a handle member 33 as before, the handle member having provision for engaging a three position drive linkage and carrying a stop plate 40. The stop plate has a cut out 50 and when the handle is in the position shown in Fig. 9 this cut out enables the manual control element which consists of a lever 47a and a plate 45 and which is rotatably carried by the rose to be mowed into the position shown in Fig. 9, anti-clockwise to the position in which a projection 49 of the plate 45 is at right angles to its position in Fig. 9. In this position the projection limits rotation of the handle member clockwise ,to 90‹ from the Fig. 9 position since an abutment 44 on the stop plate comes into connection with the abutment 49. In the Fig. 9 position of the manual control element rotation of the handle member 33 through 180‹ is possible since the plate 45 of the manual control element has a cut out 48 to allow rotation of the handle member. The positions of the manual control element are defined by surfaces 46 and 47 coming into contact with walls of the rose but in an alternative construction the plate 45 of the manual control element is symmetrical about its centre line as indicated by chain dotted lines and two stop members 51, 52 are provided to limit its rotation. The stop member 52 has two alternative positions so that in one position the control element can be rotated clockwise and in the other position it can be rotated anticlockwise to suit left or right hand doors or windows. The stop plate is also symmetrical about its centre line as indicated by the chain dotted line.