Patent GB-448485-A (GB)
Title: Improvements in paper feed mechanism for book-keeping and like machines
Filed: 1935-08-02
Abstract: 448,485. Typewriters &c. REMINGTON RAND, Inc., 465, Washington Street, Buffalo, New York, U.S.A. Aug. 2, 1935, No. 22021. Convention date, Aug. 22, 1934. [Class 100 (iv)] Platen-rotation for blanking.-A book-keeping or like machine is provided with a number of continuously operating long-feed devices which are selectively controlled for action on the same web. The mechanism shown in Figs. 5 and 10 is included in the Powers tabulator shown in Fig. 1, and is adapted to feed a web consisting of a series of bill-forms 88, Fig. 12, on which the tabulator prints details of department-store accounts. When the group of record cards representing a customer's monthly account is run through the tabulator, the name and address of the customer are printed on lines 14, 15, 16 of a form, a special perforation in the last record card for the address initiates a feed of 13 lines to skip the heading and bring line 29 to the printing line, and the balance and items are printed, feed being effected by the usual line-spacing pawl. When the card-group changes, the total is printed, feed is initiated to bring line 14 of the succeeding form to the printing line, and another customer's account is printed. If an account occupies more than one form, the mechanism is effective, after an item has been printed on line 62 of one form, to feed the web until line 29 of the succeeding form is brought to the printing line, the heading of that form being skipped. The mechanism includes a pinion 83 which is geared to the platen-shaft 47 and is provided with toothed discs 94, 96 co-operating with pawls 93, 95 on a rocking yoke 98 connected by a link 101 to a rocking arm 103 operated by a two-lobed cam 106 on a shaft 23. During each cycle, the pawls are reciprocated twice through an arc equal to slightly more than 32 tooth-spaces of the pinion 83. Each tooth-space corresponds to one line-spacing movement of the platen 46, and the pinion has 132 teeth, so that a half-revolution of the pinion feeds a 66-line form past'the printing point. The disc 94 has a pair of diametrically opposite teeth F<29>, and the disc 96 has two pairs of diametrically opposite teeth F<14>, F<54>. Members 111, 112 for disengaging the pawls 93, 95 are formed with depending slotted arms which engage a guide-pin 113, and pins 114, 115 on a rocking arm 116 which is normally held by a spring 118 in contact with a stop 122. The members 111, 112 are urged downwards by springs 120 but can be latched in upper position by latches 124, 126 which are releasable by means of a lug 132 on a slide 128 mounted on the rocking arm 103. The slide abuts on a lever 151 which is rocked when the above-mentioned special perforation is read. Normally the lug 132 can release the latch 126 only, but when the lever 151 is rocked, the slide 128 is depressed and the lug can release both latches. The rocking arm 116 is connected by a link 133 to a bell-crank 135 having a lug 136 in the path of a lug 137 on a link 44 which is connected to the rear total-shaft, this shaft being rocked at the beginning of the total cycle and remaining rocked during that cycle. For a purpose described below, the bell-crank 135, after being rocked, is retained by a latch 140 during the first half of the cycle that follows the total cycle. The latch is released early in the second half of the cycle by a pin 143 on the shaft 23. During the printing of a statement, the mechanism operates in the following manner, it being assumed that the statement occupies two forms, and that initially line 29 of the first form is at the printing line. At this time, the members 111, 112 are in lower and upper position, and the pawls 92, 95 are in and out of engagement with their discs respectively. During item-printing, the pawls 93, 95 reciprocate idly and the platen is operated by the linespacing pawl. When an item has been printed on line 62, another line-spacing operation occurs, and during the first half of the next cycle, the pawl 93 co-operates with one of the teeth F<29> to rotate the platen through 32 tooth-spaces, thereby bringing line 29 of the succeeding form to the printing line. After the remaining items have been printed, the card group changes and total-printing is initiated. During the first half of the total cycle, the bell-crank 135 is rocked by the link 44 and retained by the latch 140, the arm 116 is rocked anticlockwise, the member 111 is raised and latched, and the pawl 93 is disengaged. Towards the end of the half cycle, the lug 132 trips the latch 126, and the pawl 95 engages the disc 96. During the succeeding half cycle, the pawl 95 co-operates with one of the teeth F<14> to rotate the platen until line 14 of the succeeding form is at the printing line. If there are more than 32 spaces between the total and line 14, the feed is effected in two stages by co-operation of the pawl 95 with one of the lugs F<54> and one of the lugs F<14> respectively. The division of the feed into two stages reduces the speed and thereby prevents slip. When the card group changes another customer's name is printed, and during the second half of this cycle, the latch 140, on being tripped by the pin 143, permits the arm 116 to raise the member 112 and thereby disengage the pawl 95. During the printing of the name and address, the platen is operated by the line-spacing pawl, and pawls 93, 95 are held in disengaged position by means of the members 111, 112, the member 111 being retained by the latch 124. When the special perforation in the address record-card is presented, the slide 128 is depressed, and the lug 132 trips the latch 124, thereby releasing the member 111 and permitting the pawl 93 to engage the disc 94. During the next halfcycle, the pawl 93 co-operates with one of the teeth F<29> to bring line 29 of the form to the printing line. The latch 126 is provided with a yielding finger 127 for preventing jamming of the slide 128. At the end of a feed-movement, the pawl 93 or 95 engages one of a pair of rollers 157, Fig. 5, and is thereby caused to jam the disc 94 or 96 and arrest the mechanism in correct line-position. The discs may be formed at the base of the teeth F<29>, F<14>, F<54> with shallow notches for receiving the end of the pawls. The rollers are carried by arms 156 which are pivoted on a pin 158 and are forked to engage a pin 160. When the member 111 or 112 is raised to disable the pawl 93 or 95. the associated roller 157 is raised out of the path of the pawl by means of a lug 161 on the member. The feed-mechanism can be disabled bv lifting a finger-piece 162 having a pin 165 which engages the top of slots 166 in the members 111, 112. The finger-piece has an L-slot 164 engaging a pin 158, so arranged that the feedmechanism can be held in disabled position by rocking the finger-piece. In an alternative arrangement for arresting the feed-mechanism, the disc 96 is formed with pairs of diametricallyopposite teeth S<14>, S<29>, S<54>, Fig. 10, which co-operate with a single stop-pawl 167 to arrest the feed-mechanism in line positions 14, 29, 54 respectively. The stop-pawl is pivoted with slight longitudinal freedom on a pin 168 and is connected to a spring 171. A cam-edge 172 on the link 101 co-operates with a pin 173 on the stop-pawl to permit engagement thereof with the appropriate tooth at the end of the feed-movement of the pawl 93, or 95. Web feeding and guiding arrangements.-A fan-folded web-pile 275, Fig. 1, is placed in a tray 176, and the web 88, after passing over the platen 46, is re piled in a tray 178. The web is guided to the platen by rollers 180 and a rod 182 and is engaged at the delivery side by a feed-roller 183 and fed through shoots 185, 186 into the tray 178. The feed-roller is driven by a belt 188 and by maintaining strong tension on the web as the delivery side prevents cumulative slip of the web on the platen. The feed-roller co-operates with knurled, steel pressure-rollers 190. To ensure accurate re-piling of the web in the tray 178, the shoot 186 is so arranged that the distances between the end 206 thereof and the front and rear ends of the pile are not greater than and somewhat greater than the length of a form respectively. The tray 176 is pivoted at 195 to the framework 18 of the tabulator and is supported by a hinged bail 196. The tray 178 is hooked on to brackets 201 on the tray 176 and is provided with stays 205 which are hooked on to a bail 209 pivoted on the brackets. The shoot 185 is supported by rods 193, 194 on brackets 184, 181 and the shoot 186 is hinged to the shoot 185 and is supported by the bail 209. When the feed-mechanism is out of use, the shoot 186 and the trays are suspended behind the tabulator.