|  | G |
SECTION G — PHYSICS

|  | G |
Note(s) In this section, the following term is used with the meaning indicated: "variable" (as a noun) means a feature or property (e.g., a dimension, a physical condition such as temperature, a quality such as density or colour) which, in respect of a particular entity (e.g., an object, a quantity of a substance, a beam of light) and at a particular instant, is capable of being measured; the variable may change, so that its numerical expression may assume different values at different times, in different conditions or in individual cases, but may be constant in respect of a particular entity in certain conditions or for practical purposes (e.g., the length of a bar may be regarded as constant for many purposes). Attention is drawn to the definitions of terms or expressions used, appearing in the notes of several of the classes in this section, in particular those of "measuring" in class Fulltext... Hierarchy... Expanded...G01 and "control" and "regulation" in class Fulltext... Hierarchy... Expanded...G05. Classification in this section may present more difficulty than in other sections, because the distinction between different fields of use rests to a considerable extent on differences in the intention of the user rather than on any constructional differences or differences in the manner of use, and because the subjects dealt with are often in effect systems or combinations, which have features or parts in common, rather than "things", which are readily distinguishable as a whole. For example, information (e.g., a set of figures) may be displayed for the purpose of education or advertising (Fulltext... Hierarchy... Expanded...G09), for enabling the result of a measurement to be known (Fulltext... Hierarchy... Expanded...G01), for signalling the information to a distant point or for giving information which has been signalled from a distant point (Fulltext... Hierarchy... Expanded...G08). The words used to describe the purpose depend on features that may be irrelevant to the form of the apparatus concerned, for example, such features as the desired effect on the person who sees the display, or whether the display is controlled from a remote point. Again, a device which responds to some change in a condition, e.g., in the pressure of a fluid, may be used, without modification of the device itself, to give information about the pressure (Fulltext... Hierarchy... Expanded...G01L) or about some other condition linked to the pressure (another subclass of class Fulltext... Hierarchy... Expanded...G01, e.g., Fulltext... Hierarchy... Expanded...G01K for temperature), to make a record of the pressure or of its occurrence (Fulltext... Hierarchy... Expanded...G07C), to give an alarm (Fulltext... Hierarchy... Expanded...G08B), or to control another apparatus (Fulltext... Hierarchy... Expanded...G05). The classification scheme is intended to enable things of a similar nature (as indicated above) to be classified together. It is therefore particularly necessary for the real nature of any technical subject to be decided before it can be properly classified.

INSTRUMENTS

|  | G07 |
CHECKING-DEVICES

|  | G07B |
TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS

|  | G07B |
Subclass index
MACHINES FOR PRINTING OR ISSUING TICKETS; DETAILS THEREOF | 1/00, 3/00; 5/00
OTHER APPARATUS OR SYSTEMS CONCERNING TICKETS |
Holders; punches; miscellaneous | 7/00; 9/00; 11/00
TAXIMETERS; APPARATUS FOR COLLECTING FARES OR FEES | 13/00; 15/00
FRANKING APPARATUS | 17/00

|  | G07C |
TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS, OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE (identification of persons, e.g. finger-printing, foot-printing, Fulltext... Hierarchy... Expanded...A61B 5/117; indicating or recording apparatus for measuring in general, analogous apparatus but in which the input is not a variable to be measured, e.g. a hand operation, Fulltext... Hierarchy... Expanded...G01D; clocks, clock mechanisms Fulltext... Hierarchy... Expanded...G04B, Fulltext... Hierarchy... Expanded...G04C; time-interval measuring Fulltext... Hierarchy... Expanded...G04F; counting mechanisms per se Fulltext... Hierarchy... Expanded...G06M)

|  | G07C |
Subclass index
REGISTERING TIME OF EVENTS OR ELAPSED TIME | 1/00
REGISTERING THE WORKING OF MACHINES; OF VEHICLES; DETAILS THEREOF | 3/00; 5/00; 7/00
INDIVIDUAL ENTRY OR EXIT REGISTERS | 9/00
CHECKING APPARATUS NOT PROVIDED FOR ELSEWHERE | 11/00
VOTING APPARATUS; GENERATING RANDOM NUMBERS, LOTTERY APPARATUS | 13/00; 15/00

|  | G07D |
SORTING, TESTING, CHANGING, DELIVERING, OR OTHERWISE HANDLING COINS; TESTING OR CHANGING PAPER CURRENCY; TESTING SECURITIES, BONDS, OR SIMILAR VALUABLE PAPERS (sorting in general Fulltext... Hierarchy... Expanded...B07C) [2]

|  | G07D |
Note(s) In this subclass, the following term is used with the meaning indicated: "coins" covers also tokens or the like.

|  | G07F |
COIN-FREED OR LIKE APPARATUS

|  | G07F |
Note(s) This subclass does not cover constructions or details of apparatus which includes, or is combined with, coin-actuated mechanisms but is not specially adapted or modified for use therewith. Such constructions or details are covered by the relevant subclass for the particular apparatus. In this subclass, the following term is used with the meaning indicated: "coins" covers also tokens or the like.

|  | G07F |
Subclass index
ARRANGEMENTS OR MECHANISMS IN GENERAL |
Coin inlet; coin actuation; others | 1/00; 5/00; 7/00
APPARATUS CHARACTERISED BY THE APPLICATION |
Dispensing; metering; hiring | 11/00, 13/00; 15/00; 17/00
COMPLETE BANKING SYSTEMS | 19/00
DETAILS NOT PECULIAR TO SPECIAL KINDS OR TYPES OF APPARATUS | 9/00

|  | G07G |
REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS (digital computing in general Fulltext... Hierarchy... Expanded...G06C, Fulltext... Hierarchy... Expanded...G06F) [4]