Patent GB-704463-A (GB)
Abstract: 704,463. Loose leaf binders. DICKINSON & CO., Ltd., J. Jan. 21, 1952 [Jan. 26, 1951], No. 2073/51. Class 146(1) In a loose leaf thong binder having thong tensioning means including a thong adjusting screw, a winding or turning handle fitting for attachment thereto comprises a rotatable body adapted to be fixed to the outer end of the screw and carrying a handle part pivotally connected intermediate its ends to the rotatable body and shaped so that it can be rocked to a first position in which the outer end extends lengthwise along and closely adjacent to the outer edge of the body, while the inner end projects from the body for engagement in a locking recess in the binder cover structure and a second position in which the outer end projects from the body to form a crank handle grip, while the inner end is moved to an inoperative position to permit rotation of the handle fitting and adjusting screw by manipulation of the projecting grip. The thong binder comprises hollow shell-like binder covers 1, 2 to which clamping bars 8, 9 are hinged by rigid hinges 10 mounted on rails 11 secured to blocks 7 in the binder covers. A pair of flexible thongs 12, anchored to one rail 11, pass through aligned slots in cover capping plate 5, sheet clamping bars 8, 9, capping plate 5a and the other rail 11 to extend to the front of the cover 2 where they are secured to a tensioning bar 12a. The bar 12a is displaced relatively to the binder cover 2 by a screw 13 engag-. ing threaded nut means on the bar. The screw 13 is rotatably journalled at opposite ends in a cross rail 14 and a bearing block 15 fixed in the cover 2, and a check lock collar 16 pinned to the rear end of screw 13 has a shallow V-slot 17 to engage V- faces 18 formed on the block 15 to positively lock the screw against rotation until moved slightly forward against the tension of the thongs 12, a stop collar 19 being pinned to the screw to prevent any appreciable axial movement. The forward end of screw 13 has a squared portion 13a and a screw threaded end portion 13b both of which extend into a recess 20 in the binder cover 2. The edges.of the recess 20 are encased by a U-shaped flanged escutcheon plate 21 secured thereto as by screws 22, the plate 21 having an opening 21a for the screw 13 and, at each side, clearance openings 23 and dished access openings 23a. The handle fitting comprises a block 24 freely fitting between the limbs of the plate 21 to lie flush with the binder cover edge. The block 24 has a squaresection hole 25 to receive the squared portion 13a of screw 13 and a recess 26 into which a slot headed nut 27 fits and engages the screwed end 13b. Recesses or grooves 28, 29 are formed along the front and side edges of the block 24 and connected by a cut-away shoulder 30 as at 45' degrees to each recess. An elongated recess 33 opens on to the shoulder 30 and a plunger pin 31 is pressed by a spring 32 to project therefrom. Mounted on a pivot pin 37 in the recesses 28, 29 opposite shoulder 30, is the handle part comprising a handle stem 35, with its outer grip 38, and a stepped locking tail 36, with a projecting boss 39, which extend in opposite directions from a bearing portion 34. In the position shown, the second, the tail 36 and boss 39 are disposed wholly in the recess 29, while the handle 35 and grip 38 project from the binder cover. As the handle 35 is pivoted to lie in the recess 28, the tail 36 and boss- 39 pass through one of the clearance openings 23 until the boss 39 enters the coresponding locking opening 23a: The bearing portion 34 has its inner face 34a cut away to provide thrust faces 40, 41 having locating dimples 40a, 41a, the faces 40, 41 lying against the shouder 30 in the first and second positions respectively and positively located by the pin 31 engaging the dimple 40a, 41a. In the first position, the boss projects slightly from the opening 23a and pressure thereon will rock the handle part about the pivot 37 to trip the pin 31 from the dimple 40a, the pin 31 then thrusting against the portion 34a to move the handle grip out to the half-cock position shown in dot-dash lines when it can be gripped and moved to the outermost position. Specification 624,548 is referred to.