Patent GB-1220691-A (GB)
Title: An apparatus for indicating loading values such as moments and shearing forces in a ship
IPC: G01M5/00
Filed: 1968-02-27
Abstract: 1,220,691. Computing apparatus. MARINENS HOVEDVERFT. 27 Feb., 1968 [28 Feb., 1967], No. 9464/68. Heading G4B. An apparatus, for indicating loading values such as moments and shearing forces in a ship, comprises a panel 1 having a base line 2 corresponding to an athwartship plane, a plurality of rod elements 4 to 6, 7A, 7F, F1 to F4 and A1 to A4, corresponding to fore and aft loading values, being slidable in slots formed in the panel and being calibrated to correspond to load values relative to line 2 whereby the first ones 4, 7F, are set with their zero point at line 2, and second and subsequent ones are set with their respective zero points at the appropriate loading value of the preceding ones, and sliders 12, 13 movable along the panel to be set on the last ones A4, F4 respectively for indicating the total loading values fore and aft. A rod 8 is slidable to set its dead weight seals against indicator DW and the uncorrected midships draught is simultaneously indicated at 15. Sliders 12 and 13 then indicate fore and aft moments on scale 20. A second rod element 9 is slidable along the panel and carries dead weight scale 11, horizontal draught lines and oblique trim lines on each side of O-O line dividing fore from aft. Scale 11 is next set against slider 12 to indicate the dead weight DW, and slider 13 then indicates fore and aft trim at the uncorrected draught indicated at 15. A rotatable element 10 is turned to display a scale relative to fore or aft trim at said uncorrected draught, whereupon slider 13 is moved to an initial position relative to the O-O line of rod 10 corresponding to the trim indicated on rod 9. Thereby the draught fore or aft may be read off on rod 8. When the slider 13 is further moved to the mean position between the initial position and the O-O line, it indicates on rod 8 the corrected draught amidships. Thus, the relative dispositions of stores and cargo can be predetermined to achieve desired values of trim, draught and bending moments. A second panel may be provided on which shearing forces at sections spaced longitudinally in the ship may be calculated in accordance with the dead weight in the section, and the trim and buoyancy values obtained from the first panel. 1,220,760. Statistical armatures. CUMMINS-CHICAGO CORP. 19 Nov., 1968 [4 Dec., 1967], No. 54862/68. Heading G4M. General.-A document reader is programmed to respond to selected different codes in selected different fields of a document passing a sensing head, the arrival of the fields at the sensing head being detected by a document tracking arrangement. The reader is also programmed to read several different document formats. Document codes.-Fields 21-23 are assigned to punched codes (PF) comprising (as shown) a legible character 3 x 6 matrix code in which 5 positions are significant (R code), the mirror image of the R code (RR code), or a 5-level inline code (IL code). Each character includes a parity bit and is aligned with a sprocket hole 26 used for timing purposes. Fields 24, 25 are assigned to printed or marked (PR) codes such as the manually-marked code in field 25 or the 5-level bar code in field 24. Another code which may be used is called the CPR code and comprises a 5-level bar code in which the 5 levels are selected from 11 rows. Sensing station.-Separate sensing heads for the PF and PR codes are associated with a document feed drum. The PF head (40), Fig. 18 (not shown) is located inside the drum (43) and receives light from an elongated source (44) reflected on to the drum by a mirror (46). The PR head (41) is located outside the drum and has a separate optical system (47-50). The PF head comprises a matrix of photo-cells PC, Fig. 12, corresponding to all the significant positions of the R, RR and IL codes, and additional photo-cells PCL, PCT, detecting the leading and trailing edges of documents for reset purposes, PCS, generating timing signals from sprocket holes 26, and PCR, PCRR detecting exact alignment of each R and RR character with the PF sensing head. The PR head comprises a single line of photo-cells PCL, Fig. 15. Format selection.-Four different operational states corresponding to four different document formats may be programmed, one being selected by an operator actuating a corresponding switch S1-S4, Fig. 13, to enable an associated field detection network SN1-SN4 providing outputs such as I, 17-20 while four corresponding fields, selected for that format, pass the sensing station. Field and code selection.-For each document format, either PF or PR codes are chosen. The switches S1-S4, Fig. 13, are connected to plugboard terminals such as E-G, 21 which are jumpered to a PF or PR output terminal I-L, 22 or M-P, 22, Fig. 12, thereby selecting timing pulses from photo-cell PCS or generator 400, coupled to the document feed drum, for application to counter 102. The two decade outputs of counter 102 are connected to plugboard terminals M-O, 1-20 which are jumpered, as required to define the four fields for each of the four document formats, to four sets of four start/stop terminal pairs, e.g. I-J, 1; K-L, 1. Each set of start/stop terminal pairs is connected to the field detection network, e.g. SN1, Fig. 13, which is enabled by the corresponding format selection switch, e.g. S1. Bi-stables, e.g. 108-111 are set only for the passage of the corresponding field past the sensing station and have outputs connected to plugboard terminals such as I, 17-20 which are jumpered to terminals assigned to the different codes. The PF code terminals F, 17-19, Fig. 12, gate the outputs of the appropriate selection of photo-cells PC for the duration of the selected fields to a buffer register FF. For the PR codes, a similar selection of the in-line photo-cells PCL, Fig. 15 is effected. Gates AB are enabled during passage of a bar code field. For the marked code, photo-cells PCL4 and PCL6-PCL14 supply signals to buffer FFM which is held reset in the absence of a marked code field detection signal on terminal D, 17-20, circuit 405-410 checking the presence of a single mark in each column. For the CPR code, a selection of any five of PCL2, PCL4, PCL6-PCL14 is made. Terminals Q, 1-2 to Q, 21-22 are jumpered to groups of five terminals P, 1-5 to P, 16-20, Fig. 16, so that actuation of a format selection switch S1-S4 gates a selected group of PCL outputs to buffer FFC, the output of which is enabled for the duration of the selected fields by the field detection signal jumpered to the CPR code terminal R, 1-8.