Patent GB-399289-A (GB)
Title: Improvements in recording weighing-scales
IPC: G01G23/18
Filed: 1932-06-29
Abstract: 399,289. Weighing - apparatus. TOLEDO SCALE MANUFACTURING CO., Monroe Street, Toledo, Ohio, U.S.A. June 29, 1932, No. 18399. Convention date, March 2. [Class 143.] Printed records, apparatus for giving.-A weighing-scale is provided with printing mechanism comprising a rotatable disc bearing indicia on its face against which is pressed by electrically operated means a strip of paper with an inking ribbon interposed between the paper and the electrically operated means, the said means also causing the advance of the paper after each impression. As shown in Fig. 3, the periphery of a type disc 20 attached to the pointer spindle 17 is situated between an abutment 21 and a platen 31 moved in opposite directions to squeeze the type disc, by toggle links 38 actuated by the core 41 of a solenoid 42. A stationary index 23 in the plane of the type disc is simultaneously squeezed. The solenoid 42 is energized by pressing a pneumatic push button acting momentarily and arranged in parallel with a relay switch. When the solenoid core has risen sufficiently to print the record, a core attachment 53 opens contacts 55 and de-energizes the solenoid allowing the core to return to its lower position. The frame 29 to which the platen 31 is attached carries the feeding mechanism for the paper record strips 89, 89<1>, Fig. 5, and also carries the inking ribbon 144 and its feeding mechanism, and the mechanism for automatically rewinding the inking ribbon. On the ascent of the solenoid core 41 an arm carried thereby actuates a ratchet mechanism so that on the descent of the core after the printing operation the feed roll 111 of the record strips is moved a step forward to feed the strips. A spring-pressed tension roller 123 driven by gearing from the feed roller, presses the strip tightly against the feed roller. The paper strips may be led through a narrow slot in the casing so that they may be torn off at intervals, or alternatively they may be wound on to separate bobbins 133, 134 driven by a belt from the feed roll and retained within the casing. The inking ribbon 144, initially wound on a spool 150, Fig. 3, passes over the platen 31, between the two record strips, over a resilient tension member 151 and to a spool 152. When the record strips are fed forward the actuating mechanism thereof pushes a ratchet actuating plate 163 to the right, and on its return movement under the action of a spring 166, the actuating plate rotates the spool 152 so as to feed forward the inking ribbon against the resistance of a spring acting on the spool 150. When all the inking ribbon has been unwound from the spool 150 to which it is attached, the spring 166 will be unable to return the actuating plate 163 owing to the engagement of its pawls with the ratchet of the spool 152 which is prevented from rotating by the taut inking ribbon. On the next printing operation, however, a pair of blades mechanically connected to the solenoid core 41 liberate the pawls, and the spool 150 winds back the inking ribbon. As the printed record on one of the paper strips is a reverse record, this strip is made of translucent paper so as to be read from the back. When, in addition to the records on the two paper strips, a further record is required on a card or label for pasting on packages or boxes, the label is provided with a wax surface which is broken by the pressure of the printing platen, and an insertion slot is provided in the casing for introducing the label. By employing carbon several copies may be printed. In addition to the pointer indication at the front of the machine, a visible indication is given at the back by providing the type disc with a distinctive set of lightly etched graduations and numerals which are illuminated by a shielded electric light and may be read against an adjustable index through a lens secured in a case opening. The index may be adjusted from the exterior of the casing.