| 摘要 |
<p>557,784. Hinges. SPRIGGE, G., and FROUDE, L. F. May, 1, 1942, No. 5868. [Class 65 (ii)] A double jointed hinge for a window has one flap 3 or 4 secured to the sash, the other 5 or 6 to the window, the plate 7 between the flaps being fastened to the window by a nut and pivoted bolt 7B engaging a slotted lug 1A or 2A on the plate. When it is desired to turn the windows inside out, it is opened about the pins off the flaps 3, 4 and the bolts 7B are then released from the slots 1A, 2A, and the window is turned on the pms of the flap 5, 6.</p> |
