Patent GB-520306-A (GB)
Title: Improvements in and relating to paper carriages for accounting machines
IPC: B41J11/48
Filed: 1938-11-04
Abstract: 520,306. Typewriters &c. UNDERWOOD; ELLIOTT FISHER CO. Nov. 4, 1938, No. 31971. Convention date, Feb. 26. [Class 100 (iv)] Sheet feeding and guiding arrangements.-A pivoted front - feed shoot is arranged when swung rearwards or forwards into closed-throat or open - throat position. to move sheet - guiding means towards and away from the bottom of the platen. A detachable shoot for front-fed sheets that are to receive single-line entries may be provided. Means may also be provided for rearfeeding a journal sheet and tally strips. The front-feed guide shown in Figs. 1 and 2 comprises upper and lower pairs of laterally - adjustable guides 118, 121, the left-hand and right-hand guides 118, 121 being formed with side-lays 122, 123, and each guide 121 being-formed with a shoot 145. The guides 121 are mounted on rods 124, 147 secured to arms 125 which are secured to arms 128, 131 pivotally engaging studs 132 on the carriage 4. The guides 118 are mounted on the rods 124 and are each provided with a spring- urged slide 138 engaging a rod 135 carried by arms 136 which are mounted on rods 49, 137 on the carriage. The slides engage sleeves 143 which are secured by screws 144 to the rod 135. When the guides are in open-throat position as shown in Fig. 2, a sheet is placed on the guides 118 and passed into the shoots 145 and is directed beneath the platen 6 and on to a guide-plate 162 by means of stationary guides 153, 152, and a guide-lip 155 which is secured to a rock-shaft 156 on the carriage., Ears 177 on the rock-shaft abut on spring-urged arms 172 which are secured to a rocking plate 173 and abut on studs 176 on the arms 128, 131. Feed-rollers 166 are carried by brackets 167 which are adjustable on a rod 168 secured to the arms 128; 131. Adjustable sidelays 157 for the sheet are mounted on rods 158 and are secured by screws 161. The guide-plate 162 is arranged beneath sheet - guides 163 and is provided with sheet-stops 164 which are adjustable, in the manner described in Specification 504,495, by turning a knob 165. When the sheet is in position, the guides 121 are pushed rearwardly about. the pivots 132 into closed-throat position, and are thereby moved out of the path of the type-bars 5. During movement of the, guides 121, the .guides 118 swing into vertical position, and the feed rollers 166 and guide-lip 155 move into proximity to the platen and bend the sheet into contact therewith above and below the printing line. The guides and associated members are retained in open-throat or closedthroat position by means of a latch 182 which is pivoted on the arm 128 and is formed with two notches for engaging a pin on the carriage. When the guides are returned to open-throat position, the guide-lip and feed rollers are automatically moved away from the platen. The mechanism described in Specification 513,458 may be employed for moving the guides into open-throat position. To facilitate front-feed of sheets on which single-line entries or headings are to be typed, a shoot 186, Fig. 12. consisting of sides 187 and flared front and back walls 188, 191, is mounted on the rod 147 and is secured by co-operation of a latch 194 with another rod 168. When the guides 121 have been moved into closed-throat position to avoid obstruction of the type - bars, the guide - 1ip 155 is moved away from the platen by rocking a hand-lever 198 in connection with a cam 201 which co-operates with a flange 203 on the rockshaft 156. A notched latch 204 co-operates with a pin 206 to hold the hand-1ever in normal or displaced position. A sheet is inserted in the shoot 186 and pushed over the guide-lip 155 into contact with the stops 164. The sheet is held in contact with the platen at the printing line by means of a finger 298 on the shoot.  Web feeding and guiding arrangements-The carriage 4, Figs. 1 and 2, supports rolls 7, 8 for supplying a continuous journal-sheet and a tallystrip. The roll 7 is mounted between plates 45, 46 which rest on the rod 49 and are provided with sleeves 50a which engage a rod 47 and are secured by screws 52. The journal-sheet passes over a table 57 provided with adjustable sideguides 64, and is held in engagement with the platen 6 by means of feed-rollers 66, and a finger 81 which is secured to a plate 82 on a spring- urged shaft 83 provided with a finger-piece 85 for releasing the finger. To, facilitate insertion of the journal-sheet, the brackets 138 are disconnected from the rod 135, and the guides 118 are swung forwardly. The journal - sheet is directed rearwardly by means of a guide-plate 88, and after passing over the roll 7 rests on arms 94 which are' secured to the plates 45, 46 and are provided with side guides 95. The plate 88 is suspended loosely from the shaft 83 and is formed with fingers 91 which rest on the table 57. The feed-rollers 66 are mounted in plates 68 which are pivoted on a rod 74 and are connected by springs 77 to brackets 75 which are mounted on the rod 74 'and a square shaft 76 and embraces the plates. The shaft 76 cooperates with fingers 71 on the plates 68, and when rocked by means of finger-levers 78 releases the feed-rollers. The roll 8 is mounted in a holder 96 which hooks on to the rod 47 and a rod 101 and is secured by means of a latch -consisting of two sleeves 102 which are mounted on the rod 101 and are spring-urged into engagement with recesses in the sides of the holder. The rolls 7 8 engage spring-urged brakes 53, 112.  Web-cutting arrangements.-The plate 82, Figs. 2 and 12, is provided at the rear with a serrated edge 84 for tearing of the journalsheet. Specifications 401,904, [Group XIX], and 414,143 also are referred to.