GB426168A - Improvements in linkages for invisible hinges - Google Patents

Abstract

426,168. Concealed hinges. SOSS, J., 647, East 1st Avenue, Roselle, New Jersey, U.S.A. June 22, 1934, No. 18548. Convention date, July 3, 1933. [Class 65 (ii)] A linkage for concealed hinges comprises a relatively wide arm placed between two narrower arms pivoted to it, each arm being formed of a number of similar laminations secured together. The complete hinge has a pair of such linkages connected together and to both the hinge attachment plates, the links having their adjacent surfaces so shaped that they nest within one another when the hinge is closed. In the form shown, one hinge member 32 carries pins 34, 39 on the middle parts of which are mounted link members 10, 22, both being formed of a series of superposed sheet metal blanks ; the members are held at the middle of their hinge pins by spacing collars 41 above and below. The other hinge member 33 carries similar pins 35, 40 carrying at top and bottom link members 11, 23 formed of blanks of the same shapes as those forming the links 10, 22, but each using a smaller number of blanks than the latter links ; the top and bottom link members 11, 23 are separated by spacing collars on their hinge pins. The blanks forming the link members 10, 11 are held together by rivets 12. The link 10 fits between the upper and lower links 11, 23 and is pivoted thereto at 21, 31 respectively; the link 22 also fits between, and is pivoted to, the link members 11 at 30. The links 10, 11 are formed with flat portions 13<a> to limit the closing of the hinge by engaging the adjacent links 22, 23 respectively. The hinge members 32, 33 are slightly cranked above and below the links to provide recesses for them, and have extensions 32<a> (dotted) for attachment to door or frame.