Patent GB-535880-A (GB)
Title: Improvements in apparatus for transmitting the response of weighing scales to recording mechanism
IPC: G01G23/18
Filed: 1940-02-10
Abstract: 535,880. Weighing-apparatus. BERKEL AUTO SCALE CO., Ltd. Feb. 10, 1940, No. 2627. Convention date, Feb. 11, 1939. [Class 143] Printing records, apparatus for giving; indicating mechanism. Relates to apparatus for transmitting to indicating, registering and/or recording mechanism the results of the investigations by feeler means, of stepped or other weight-representing elements set by a weighing machine. According to the invention, the feeler means cause actuation of the indicating &c. mechanism on their return from the investigating position, and the investigating movement of the feeler means takes place independently of operating the indicating &c. mechanism. The apparatus shown is arranged to take a printed record from type wheels 1 ... 4, the type wheels 1, 2, 3 being controlled acording to the movements of spring-pressed rods 29, 30, 31 coupled to the investigating feelers (not shown), and the remaining type wheel 4 being associated with a slotted push rod 34 connected with the switching- in mechanism of supplementary weights used for increasing the weighing range of the machine. In use, after the weighing machine has responded to the load, a control shaft 13 is rotated by hand or by a motor. Cam mechanism 14 displaces locking levers 9, and the type wheels 1 ... 4 (which also indicate at a window 6) run back from a previous recording position to their zero position, under the action of springs. The spring-pressed rods 29, 30, 31 are set free and the associated feelers are pushed against the numeral-representing elements of the weighing machine, at the same time rocking toothed sectors 16, 17, 18. A cam-operated lever 27 lowers a spring-pressed lever 24 carrying coupling wheels 19, 20, 21 and places the coupling wheels into gear both with the type wheels 1, 2, 3 and the toothed sectors 16, 17, 18. Cam discs on the control shaft 13 now return the feelers and rods 29, 30 31 to their starting positions thus rotating the type wheels to an extent representing the weight of the load. The locking pawls 9 again lock the type wheels and the coupling wheels 19, 20, 21 are uncoupled by the rise of their carrying lever 24. The type is now printed upon a ticket by a hammer 42 operated from the control shaft 13, and the mechanism awaits the next weighing operation. The type wheel 4 is set partly by the rod 34 connected to the capacity-increasing mechanism and partly by transfer from the type wheel 3. When a supplementary weight is switched-in, the push rod by engaging a peg 32 on the type wheel 4 rotates the type wheel the necessary amount to display or present a higher digit. A peg 40 on the type wheel 3 effects transfer by actuating a pawl 36 co-operating with teeth on the wheel 4. A second peg 41 liberates the pawl and allows the type wheel 4 to zeroize when the type wheel 3 runs back to its zero position. Instead of using coupling wheels 19, 20, 21, a system of pawls may be used, and in place of type wheels, elements of calculating machine may be fitted for use in effecting multiplication of the weight and price of the commodity. Specification 1579/40, (as open to inspection under Sect. 91) is referred to.