420,453. Statistical apparatus. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. June 15, 1933, No. 17156. Convention date, June 15, 1932. [Class 106 (i)] Combined with independent adding machine ; total-printing.-In a method and apparatus for counting the number of various entries in perforated strips or cards, group-identifying code perforations are sensed and the sensing mechanism selects the corresponding " selector " . (WOOO, W001 &c., Fig. 4), to which unity is added, whereby the number of the various entries are selectively counted. The " selectors " are stepping devices which are known in the automatic telephone art as " pre-selectors," each being capable of registering up to ten impulses. The group designations which are perforated in the strip 11 according to a fourpoint code, are read by contact reading fingers 1, 2, 4, 8 .... 800, Figs. 1 and 3, which energize magnets A, B, C, D, .... M when they read perforations. The code hole positions have the values 1, 2, 4, 8 in the units denomination, 10, 20 &c. in the tens and 100, 200 &c. in the hundreds. Magnets A .... M control the contact a1 &c..... m1 &c. of translating ladder circuits shown below them in Fig. 3. Each of the ten magnets H0 .... H1 in the hundreds denomination when energized closes ten contacts, e.g. H0 closes contacts h00 ... h09, Fig. 4, to energize relays Z0 .... Z9. Each relay closes ten contacts, e.g. relay Z00 closes contacts z00 .... z09 to energize the driving magnets W000 ... W009 of storage selectors. Each of these " selectors " is a stepping device of the construction known in the automatic telephone art as " pre-selectors." Hence the ten magnets H0 ... H1 control a thousand magnets W000 ... W099 up to W999 (the latter not shown). The first relays Z0, Z10 in each set are connected to a common line L0, the second relays to a common line L1 and so on. Magnets W000, W010 &c. are likewise connected to common line L10 and so on. Assuming that strip 11 is punched, left side of Fig. 1, with the group designation number 021, then magnets B, D (hundreds), F (tens), and I (units) are energized. Cam 17 closes a contact 16 at the correct time and a circuit -ve, 16, d2, a6, b8, H0, +ve is closed. The energized magnet HO closes its contacts h00 ... h09 and the tens denomination magnet F selects a circuit -ve, 16, h1, g1, f2, e2, L2, Z2, h02, + ve to energize the relay Z2. This latter closes contacts z20 ... z29 and the magnet I in the units selects a circuit -ve, 16, m1, l1, k1, i1, L11, W021, z21, +ve to energize the selector magnet W021 corresponding to the numeral 021. Subsequently, contact 16 opens and magnet W021 is de-energized. The strip 11 is read line by line in this way and the various selector magnets are energized. A selector may consist of three magnets W000e, W000z, W000h (or W001e, W001z, W001h, &c.), and the associated mechanism to the right in Fig. 5. Magnet WOOOe in the units selector corresponds to magnet WOOO of Fig. 4, and when it is energized from the perforated strip, as set out above, the selector is stepped on one tooth by the ratchet and pawl shown. In this way, each time a storage selector is energized, unity is added. The contacts 21, Fig. 5, of the selector are wired as shown to four magnets. N, O, P, Q for the units, four magnets R, S, T, U for the tens and four magnets V, W, X, Y for the hundreds denomination. When a manual print key Th is depressed various magnets N ... Y are energized according to the positions of selector arms w1 ... w800, on studs which are wired up. Magnets N ... Y control contacts n ... y in circuit with four magnets M1, M2, M4, M8 of an instrument which effects the actuation of the keyboard of a single bank adding machine. Cams Nh, Nz, Ne connect the contacts n ... q, r ... u, v ... y in turn (highest denomination first) to the magnets M1 ... M8 so that the keyboard is actuated denomination by denomination to effect printing of the total stored up in the selector. The selectors are reset to zero by closing hand switches S1 .. S7 in series with contacts II ; or switches S1 ... S7 may be closed singly or in groups by a switch drum.