Patent GB-296285-A (GB)
Title: Improvements relating to manifolding arrangements for typewriting machines
IPC: B41J15/10
Filed: 1928-04-16
Abstract: 296,285. Pilgrim, G. J. M. April 16, 1928. Web-feeding arrangements; ink-ribbon mechanism.-Relates to web-manifolding arrangements of the kind in which carbon papers interleaved with a multiple web are fed forward during the typing of one section of the web and are then retracted to engage the next section, and consists in the employment of webs of carbon papers wound on separate rolls so that the used parts can be torn off and replaced by unused parts drawn from the rolls; the rolls are mounted on the carriage or in machines provided with a carbon-paper trolly, the rolls are mounted on the trolly. In the mechanism shown in Figs. 1 and 3, rolls g of carbon paper are carried by spindles h mounted in brackets j, j<1> which are secured to the carriage c and are connected by a cross-bar c<0> having a roller c<1> running on a rail c<2>. The spindles engage apertures and slots in the brackets j, j' and, are retained by pivoted catches k which normally abut on shoulders on the brackets j<1> and are sprung laterally and lifted to release the spindles. The spindles are each provided with fast and loose flanges, and with a pin for engaging a notch in the core of the roll. The spindles are geared together by pinions l, l<1> and can be rotated simultaneously by a crank m, the movement being limited by an adjustable stop-device consisting of a lug p<2> in the path of an arm p<1> connected to a pinion o<1> gearing with a pinion o on one of the spindles. The arm may be secured to the pinion o<1>, but is preferably loose on the pinion shaft p and co-operates with a stud o<2> on the pinion. The pinion is moved laterally to release the stop-device. The spindles can be locked by moving a slide n into engagement with one of the pinions l. The paper webs and interleaved carbon webs are guided upwards at the front of the platen by means of wire frames s, s<1> secured to tubes s<2> which are mounted on rods s<3> on the brackets, springs s<4> holding the frames in the position shown. On raising the frame, a slight lateral movement is imparted by the springs, and pins s<6> on the sleeves catch the brackets and retain the frames in raised position. The webs, consisting of forms separated by perforations, are preferably taken from a zig-zag pile supported by a tray t which is hooked on the brackets; or the webs may be taken from a roll. The platen b is wider than the webs, the extension being employed for sheets, and is equipped with rear feed-rollers e extending along the platen, and front feed-rollers d, d<1> which engage the sheet and webs respectively. The rollers d, e are released by the usual finger-lever e<1>, and the rollers d<1> are so arranged that on release they are depressed sufficiently to allow the webs to extend in a straight path from the platen to an adjustable inclined table r. The rollers d<1> are carried by a frame d<2> which on release of a catch d<0> is depressed by a spring. The table r is provided with a pivoted straight-edge r<1> for tearing off the webs, clips r<3>, r<4> retaining the straight-edge in the normal and operative positions. In operation, the carbon webs are squared by means of the straight-edge and are then interleaved with the paper webs and passed round the platen, the paper webs projecting slightly beyond the carbon webs. After typing the leading forms, the guide s is raised, the feed-roller d<1> is depressed, the webs are allowed to fall on to the table r, the paper webs are held down on the table, and the carbon webs are retracted by turning the crank m. The forms are then torn off, the feed-roller d<1> is raised, and typing is resumed. The exhausted parts of the carbon webs are torn off periodically.