Patent GB-667918-A (GB)
Title: Improvements in and relating to release and reset mechanism for clothes wringers
IPC: D06F45/00
Filed: 1950-05-11
Abstract: 667,918. Wringers. BRITISH THOMSON-HOUSTON CO., Ltd. May 11, 1950 [May 21, 1949], No. 11786/50. Class 138 (ii). In a clothes wringer of the type having a main frame including end stiles 1, 2 (2 only visible in the Figures shown, in which pressure rolls 7, 8 are journalled, and a spring (not shown) confined between a top frame member 13 and the rolls to exert operative pressure on the rolls, mechanism for emergency releasing of roll pressure is provided comprising a series of mutually interconnected links pivotally attached at their respective free ends to the top frame member 13 and to one of the stiles 1, 2, the linkage being foldable to a position providing a length effective to draw the top frame member 13 into operating position to load the spring, a latch rotatably carried on the stile and engageable with an element of the linkage to hold it in the folded position, a lever system pivotally carried by the main frame and movable to rotate the latch to release the linkage, and a reset lever pivotally carried by the top frame member 13 and temporarily engageable with the linkage to return it to the folded latched position. In the construction shown in Fig. 4 the top frame member 13 has rigid therewith, laterally-spaced depending brackets 23 which are pivotally connected at 23 to laterally-spaced links 21. The latter are pivotally connected at 22 to links 20 which are pivoted at 26 to the side stile 2. Fig. 5 shows the normally-released position of the top frame which it assumes under the force of gravity and in which the links 20, 21 form a toggle mechanism pressure to the right on the pivots 22 forcing the rolls 7, 8 into engagement. This pressure is provided by the ends 46 of the reset lever formed by spaced arms 40 pivoted by means of lugs 44 to the top frame member 13. The arms 40 extend through slots 41 in the member 13 and have an operating handle in the form of a pressure-plate 42. Downward movement of the plate 42 drives the ends 46 against the pivots 22 and results in extension of the toggle until inward extensions 32 of the pivots 22 each engage a notch 31 in a respective latch 28 to retain the rolls 7, 8 in operative position. A push-bar 34 mounted on each side of the wringer has inturned arms 37 at each end, which are pivoted at 35 to lugs rigid with the stiles 1, 2. A flange 38 of each latch 28 overlies the inner end of the associated arm 37 and the position of the pivots 35 is such that (as shown in Fig. 3) upward or downward movement of the push-bars 34 results in clockwise movement of the respective latch 28 against its return spring 33 into a position in which the extensions 32 of the pivots 22 are released. In the latched position of the linkages, the pivots 22 are disposed slightly to the left of a line joining the pivots 25 and 26 but tabs 27 on the links 23 ensure that on release of the latch 21, the linkage breaks inwardly. In a modified construction, Figs. 7, 8 (not shown), the brackets 23 are replaced by a depending casing rigid with the frame 13 and which provides pivots for the links 21. The casing serves to enclose the release mechanism. The driving means of the wringer may be as described in Specification 562,164.