GB664213A - Improvements in clamping devices for file wrappers - Google Patents

Abstract

664,213. Loose-leaf clamping devices. CHAUVIN, A. A. Aug. 12, 1949, No. 21052/49. Class 146 (i). [Also in Group XXV] A clamping device for loose leaves comprises a steel piece 9 in the shape of a double T hinged at one end of one cross-bar 15 of the double T to a base plate 7 to be riveted, as through holes 8, to a file wrapper and which can be engaged through the other end of the same cross-bar 15 under a stirrup 18 carried by the base plate 7, the second cross-bar 17 bearing on the documents. The base plate 7 is formed with a flange 10 having one end 11 bent back at 13, in which the end of the cross-bar 15 is hinged by a pin 14, and the other end 12 cut and bent to form the stirrup 18 under which fits the handle 16 at the other end of cross-bar 15. The opposite edge of the plate 7 is formed with a ridge 19 and projections 20 may be provided, both to assist clamping of the documents. The double T piece 9 may have the cross-bar 17 curved and formed with wings 17<SP>1</SP>, 17<SP>2</SP> or, in a modification, with lugs, to assist clamping the documents and the handle 16 may be an extension of the cross-bar 15 or may be hinged thereto at 21 to facilitate release from the stirrup 18, the bar 15 and handle 16 being maintained in line by a fork 22 engaging a small projection 23. In place of the hinge connection 21 on the handle 16, the end 12 of the flange 10 may be hinged thereto.