|  | 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

|  | G07B 1/00 |
Machines for printing and issuing tickets (printing mechanisms per se Fulltext... Hierarchy... Expanded...B41; output mechanisms of digital computers Fulltext... Hierarchy... Expanded...G06C 11/00)

|  | G07B 1/02 |
· | employing selectable printing plates

|  | G07B 1/04 |
· · | wherein the plates are inserted

|  | G07B 1/06 |
· | without selectable printing plates

|  | G07B 1/08 |
· | portable

|  | G07B 3/00 |
Machines for issuing preprinted tickets

|  | G07B 3/02 |
· | from stock in wound strip form

|  | G07B 3/04 |
· | from a stack

|  | G07B 5/00 |
Details of, or auxiliary devices for, ticket-issuing machines (for validating inserted tickets Fulltext... Hierarchy... Expanded...G07B 11/02)

|  | G07B 5/02 |
· | for cutting-off or separating tickets

|  | G07B 5/04 |
· | for recording or registering tickets issued

|  | G07B 5/06 |
· | for preventing fraudulent operation

|  | G07B 5/08 |
· | for avoiding incorrect action of the machine

|  | G07B 5/10 |
· · | indicating when ticket supply is exhausted

|  | G07B 5/12 |
· | allowing manual writing on the tickets

|  | G07B 7/00 |
Holders providing direct manual access to the tickets

|  | G07B 9/00 |
Ticket punches (perforating pliers Fulltext... Hierarchy... Expanded...B26F 1/36; marking record carriers in digital fashion by punching Fulltext... Hierarchy... Expanded...G06K 1/02)

|  | G07B 9/02 |
· | Toy ticket-punches

|  | G07B 11/00 |
Apparatus for validating or cancelling issued tickets [2]

|  | G07B 11/02 |
· | for validating inserted tickets

|  | G07B 11/03 |
· · | by printing [2]

|  | G07B 11/05 |
· · | by perforating [2]

|  | G07B 11/07 |
· · | by separating part of ticket [2]

|  | G07B 11/09 |
· · · | combined with receptacle for separated part of ticket (refuse receptacles in general Fulltext... Hierarchy... Expanded...B65F 1/00) [2]

|  | G07B 11/11 |
· | for cancelling tickets [2]

|  | G07B 13/00 |
Taximeters (measuring distance travelled Fulltext... Hierarchy... Expanded...G01C; measuring time Fulltext... Hierarchy... Expanded...G04)

|  | G07B 13/02 |
· | Details; Accessories

|  | G07B 13/04 |
· · | for indicating fare or state of hire

|  | G07B 13/06 |
· · | Driving arrangements

|  | G07B 13/08 |
· · | Tariff-changing arrangements

|  | G07B 13/10 |
· · · | automatically actuated

|  | G07B 15/00 |
Arrangements or apparatus for collecting fares, tolls, or entrance fees at a control point (coin-handling aspects Fulltext... Hierarchy... Expanded...G07D; vending or hiring apparatus actuated by tokens or tickets Fulltext... Hierarchy... Expanded...G07F 7/00, Fulltext... Hierarchy... Expanded...G07F 17/00)

|  | G07B 15/02 |
· | with provision for taking into account a variable factor such as distance or time, e.g. for passenger transport

|  | G07B 15/04 |
· · | comprising devices to free a barrier, turnstile, or the like (coin-freed turnstiles in general Fulltext... Hierarchy... Expanded...G07C 9/00)

|  | G07B 17/00 |
Franking apparatus (printing aspects Fulltext... Hierarchy... Expanded...B41)

|  | G07B 17/02 |
· | with means for computing or counting

|  | G07B 17/04 |
· | with means for avoiding misuse