Patent GB-194725-A (GB)
Title: Apparatus for recording a number of physical or chemical values by means of the same recording apparatus
IPC: G08C15/12
Filed: 1923-03-13
Abstract: 194,725. Roucka, E. March 13, 1922. [Convention date]. Recording by co-ordinates; single recording-apparatus for several measuring-instruments; marking action.-In apparatus of the kind in which recording apparatus is operated by periodical impulses of energy the positions of which in time intervals are determined by the value to be recorded, a single recording apparatus is employed in conjunction with a number of measuring instruments, and the records are made on the same tape. The pointers 8, 10, 12, Fig. 1, of three measuring instruments co-operate with continuously-moving arms 30, 38, 46 driven in succession past their respective scales 20, 22, 24 by synchronous motors 26, 34, 42 so that when the position of an arm coincides with that of its pointer a circuit is completed through a magnet 58, and a momentary impulse is sent out by a switch 72, 70. 74 over a line 84 to energize the coil 88 of a relay at the receiving station. At the receiving station a motor 140, Fig. 2, running synchronously with the motors 26, 34, 42 drives a cam 144 which through a pin connection 154 continuously moves a bar 114 carrying record mechanism, to and fro over a strip 122. The arrangement is such that during the movement of the arm 30 over the scale 20 the record member 108, Fig. 1, or 128, Fig. 2. moves over one-third of the width of the strip, and during movement of the other arms over their scales the member moves over successive portions one-third the width of the strip. Energization of relay coil 88 completes a circuit for a magnet 112 which causes the record point 108 to press an inked ribbon 120 onto the strip. As an alternative the recording member may be a pencil and may be carried by the core of a solenoid which replaces the magnet 112. The record strips 132, 134 are similarly associated each with a pair of measuring instruments. A Morse key 82 is provided for sending code messages which appear on the strip as shown at 138. As shown in Fig. 3, the recording member is reciprocated over the strip in a manner similar to that shown in Fig. 2, but in this case the movement is over the whole width of the strip for each indication. Each time an impulse is sent to energize magnet 202 at the receiving station, the wheel 208 presses the inked ribbon into the strip and the ratchet 212 and pawl 214 co-operate so as to put a fresh type-surface 210 into operative relation with the ribbon so that a distinctive mark is made for each measuring instrument. An alternative method of producing distinctive marks is shown in Fig. 4, in which at each operation of the recording arm 240 a roller 244 is given a partial rotation to put different coloured ink-pads into operative relation with the strip 242. In a further method, instead of having a single magnet 58, Fig. 1, for all the measuring instruments, each is provided with a magnet 280, Fig. 8. Operation of this magnet causes two short impulses in quick succession to be sent from the contact segments 288, but by varying the number and length of the contact segments, different arrangements of signs may be produced, as shown in Fig. 7. Specifications 191,729 and 191,730, [both in Class 40 (i), Electric signalling systems &c.], are referred to. The Specification as open to inspection under Sect. 91 (3) (a), comprises an arrangement in which the device shown in Fig. 3 is operated by a number of thermo-couples which are connected in succession by a distributor to a device such as 8, 30, Fig. 1. This subject-matter does not appear in the Specification as accepted.