Patent GB-190228247-A (GB)
Title: Improvements in Machines for Feeding Sheets of Paper and the like.
Filed: 1902-12-22
Granted: 1903-02-19
Abstract: 28,247. Lake, H. H., [Economic Machine Co.]. Dec. 22. Feeding sheets.-Relates to apparatus in which the sheets are fed off singly from the top of the pile, and consists of, (1) an arrangement of the push-fingers which push the top sheet forwards, and (2) an arrangement of pile-retaining fingers or feet which bear on the pile near its rear corners. Fig. 5 shows a push-finger, of which any number may he arranged on the shaft b, to operate on the pile near its forward edge and push the top sheet forwards to the sheet-carrying rollers or devices. The push-finger D is pivoted at E on the lower end of an arm C fixed on the shaft b. The shaft b is rocked to move the fingers backwards and forwards by a lever B thereon, operated in one direction by a cam A' on a driven shaft and in the other direction by a spring b<1>. The forward end of the finger D is provided with a sheet-pushing device, which may consist of rollers d<2> in a piece d pivoted on the finger D at d'. The rollers d<2> are prevented from rotating as they move forwards in contact with the top sheet. The pivot bolt E is adjustably fixed by a nut e<2> in a slot c in the lower end of the arm C. A spring on the pivot bolt tends to press the forward end of the finger D down on to the pile. The finger D has a rearward extension f connected by a rod F to an arm f<1> pivoted at f<2> on the upper end of the arm C. Above the arms f<1> is a transverse bar G carried by levers H loosely pivoted on the shaft b. These levers H are held by springs against cams I, which operate the bar G so as to depress the rods F, and raise the forward ends of the fingers D, at the end of the forward stroke and during the return stroke. The finger D may be held in raised position when out of use, by a slotted link L having a recess l<2> which may be engaged with the pin l<1> on the arm C. Figs. 10 and 15 show the retaining- finger P, operating in conjunction with a buckling- mechanism. The buckling-mechanism may consist of buckling-fingers N operated by arms n to buckle the sheet against a foot O raised and lowered by a lever O<1> and cam. The presser finger P consists of a wedge-shaped piece having a cylindrical shank p<1> passing through a socket in a block P<1>, and held in adjusted position therein by a plate q screwed to the block and engaging notches in the shank. The notches are deep enough to permit the shank to rotate in its socket sufficiently for the finger P to adjust itself to the level of the pile. The block P<1> is attached to a stem R by a screw r, and may be turned on the stem to adjust the position of the finger P. The stem R engages in a pressing-sleeve S, and is prevented from rotating therein by pins s<1> and slots. The sleeve S is formed on an arm t having a socket T fixed on a rod t<2> vertically movable in a bracket t<3> and pivoted at its upper end to a lever U pivoted at o<2> and operated by a cam U<1> on a driven shaft m<1>. The lever U is drawn down, when the cam permits, by a spring U<2>, and the socket S presses the finger P down on to the pile. The cam raises the socket S, and the finger P then rests on the pile by gravity during the time that the corner of the top sheet is drawn from under it by the buckling- mechanism.