Patent GB-153078-A (GB)
Title: Improvements in sheet collating devices for typewriters
IPC: B41J13/00
Filed: 1919-07-28
Abstract: 153,078. Wherry, J. A. July 28, 1919. Sheet feeding, clamping, and guiding arrangements; paper-shelves; paper-carriages; platenroller couplings; platen-scales.-Apparatus for collating and feeding a sheaf of sheets comprises a paper-collating shelf and a platen which is movable into and out of the printing position and is adapted when in the printing position to be coupled to the line-spacing mechanism. In the apparatus shown in Figs. 1 and 4, the platen roller 142 is mounted in a frame comprising side bars 4 and a paper-shelf 6, the side bars being connected by links 10, 59 to brackets 13, 58 on the usual paper-carriage 1. The links permit the frame to be turned from the horizontal to the vertical position, the side bars engaging notches 57<1> in a cross bar 2 on the paper-carriage when the frame is vertical. The links 10 have extensions for engaging the pins 16 on the side bars when the frame is horizontal. The platen roller is provided with spindles 42 which rest in notches 41 in the side bars and carry clutch members 50 for engaging clutch-members 51, Fig. 5, in connexion with the usual line-spacing wheel 54 and platen-knobs 53. The spindles are longitudinally movable and are urged outwards by springs 48 arranged within the platen-roller and abutting on yokes 43 in which are mounted the inner ends of the spindles. The clutch members are automatically connected or disconnected by moving the frame into the vertical or horizontal position respectively. The clutch members are locked together by the engagement of releasa.ble levers 55 with grooves in the spindles. A paper-apron 63 provided with feed rollers 73 co-operating with the platen-roller, is mounted on the side bars 4 by means of links 65, and bolts 59' carrying a rod 61<1> mounted on the apron. The apron is urged towards the platen-roller by springs 71 and can be released by means of cams 68 which engage slots 67 in the links 65 and are operated by handlevers 69. The paper-shelf 6 supports a travelling paper-clamp comprising a bottom bar 20 and a hinged top bar 27 provided with a clamping-plate 31 which is secured to vertically movable studs 32 and is urged towards the bar 20 by springs 33. The clamping-plate enters a recess in the bar 20 and is formed with a curved edge 34, arranged over the bevelled edge of the bar 20. The bar 27 is provided with paper-fingers 36 for preventing the upper parts of the sheets from falling when the frame is moved into the vertical position. The bar 20 is secured to blocks 18 which are guided by the edges of the table 6 and are connected to endless bands 38 which pass over pulleys 37, 37' and are provided with counterweights 40 for the paper-clamp. The bar 27 is connected by a spring hinge 26 to a bracket 25 on one of the blocks 18 and is provided with a latch 29 for engaging a bracket 30 on the other block. The shelf is provided at the sides with scale strips 17 which serve also as side lays for the sheets. In operation, the shelf is placed in the horizontal position, and the sheets, after being passed beneath the fingers 36 and a bar 36<1> and over the bar 20 are passed between the platen roller and the apron, and are squared and arranged in the required positions by the aid of one of the scales 17. The sheets are clamped by depressing the bar 27, the shelf is swung into the vertical position, and the sheets are fed until the top line reaches the printing line, and are thereafter moved in the opposite direction by the line-spacing mechanism. In the apparatus shown in Figs. 17 and 20, the collating-shelf 6<1> and side bars 7<1> are attached to the end plates 90<1> of an inner papercarriage in which is mounted a platen roller 27<1> provided with a line-spacing wheel 29<1> and knobs 30<1>. The side bars are connected by links 9<1>, 12<1> to brackets 2', 4<1> on the main carriage 1', the links permitting of the shelf being turned from the inclined to the vertical position. The sheets are arranged on the table whilst it is in the inclined position. When the shelf is in the vertical position, lugs on the inner carriage rest in hooks 31<1> on the main carriage, and the line-spacing wheel 29<1> is in operative engagement with the line-spacing lever 100'. The pivot rods 13', 10<1> of the links are provided with adjustable coiled springs which tend to raise the shelf, movement from the vertical position being prevented by a catch 23'. The movement of the shelf into the inclined position is limited by the engagement with the link 12' of a pin which is inserted in holes 7". An apron 35<1> pivoted with feed-rollers 41<1> is supported at the top by links 33<1> on the side bars 7', and is supported at the bottom by a rod 38<1> on the inner carriage. The apron is urged towards the platen roller by means of adjustable springs 42<1> and can be released by means of cams 45<1> which engage notches 47<1> in the links 33<1> and are operated by hand-levers 48<1>. The springs 42<1> may be replaced or aided by coiled springs on the pivot rod 34<1> of the links 33'. The shelf 6<1> is provided with angular strips or gauges 54<1> for engaging the bottom sheet of a sheaf. The strips are formed with diagonal slots 56' engaging studs 55' on brackets 52<1> and are held in contact with the shelf by gravity. The brackets are adjustable laterally and are secured by bolts 54" passing through slots 53'. The strips are formed with scale divisions and are provided with spring clips 57<1> for engaging the top sheets whilst they are being arranged. The clips are provided with a mark or notch in register with a scale division. Additional spring clips adjustable longitudinally of the strips may be provided. The lower brackets 52<1> are provided with a resilient finger 59' carrying a feed-roller 61<1> which engages the platen roller. The shelf is formed with horizontal and vertical scale divisions 62<1>, 63<1>, and the platen roller is formed with horizontal and circumferential scale divisions 66', 65'. The gauge shown in Fig. 23 consists of superposed strips 70<1>, 72<1>, 74<1> held in laterally adjusted position by screws 71<1>, spring fingers 78<1> being adjustable longitudinally on the strips and being secured by screws 76<1> which pass through a slot 75<1> in the strip 74<1> and are provided with heads 77<1> sliding in a slot 73<1> in the strip 72'. The strip 74<1> is provided with scale divisions.