US2074172A - Ship's signaling system - Google Patents

Ship's signaling system Download PDF

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Publication number
US2074172A
US2074172A US13243A US1324335A US2074172A US 2074172 A US2074172 A US 2074172A US 13243 A US13243 A US 13243A US 1324335 A US1324335 A US 1324335A US 2074172 A US2074172 A US 2074172A
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United States
Prior art keywords
ship
loudspeakers
microphone
stations
systems
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Expired - Lifetime
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US13243A
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English (en)
Inventor
Glen Robert Rodger
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GLEN S PATENTS AND HOLDINGS IN
GLEN'S PATENTS AND HOLDINGS Inc
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GLEN S PATENTS AND HOLDINGS IN
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems

Definitions

  • Y'Ihis invention relates to improvements in ships.” signaling systems and more particularly to ships telephone systems, ⁇ and has for its object generally to provide means for ensuring the 5 ⁇ transmission and-reception ⁇ of communications ⁇ on board i ship from ⁇ a control point, such as the i bridge, to stations onithe ship.
  • ⁇ A specific object of the "presentfinvention is to provide apparatus ⁇ fof afoolproof character to c'lude'samicrophone" located at a control point of the ship (for example, the bridge) an amplifier in a' suitablyqprotected ,situation, a connect'- Which it may be necessary example, the boat-stations) *andrloudspeakers noiseassociated with a storm, panic, or other i disturbance,'secured at suolistations.
  • nientsdl ⁇ the generaltype referred to have shown are desirable ⁇ for systems provided in accordance "with the invention.
  • Patent loudspeakers disclosed ⁇ in issued ⁇ I"ebruaryy 23, 1937 have the forth, and the scopel be installed permanentlyon a ship as part of ⁇ 1 to enable one inr command ⁇ at a f to convey oral messages to stacapable ⁇ of sufficient outplit to be heard abovethe Experiments with sound reproducing instruthat instruments of ⁇ ahighly penetrating quality over the ship. ⁇
  • a loudspeaker, according toimysaid copending ⁇ application, suitable fora ships signaling systern ofV the. ⁇ present invention,A should have a sound cone of relatively wide angle, for example, in the neighborhood ⁇ of P178 degrees, in order to withstand the better the effects of wind and rain.
  • Both the driving and the driven cones are 'preferably made of metal and in size are of ⁇ from six ⁇ to eight inches indiameter while the distance between them ⁇ is made relatively small, for ⁇ example; 3/64ths of an inch.
  • Fig. 1 is a diagrammatic side view of a ship showingthe location ofthe various elements and the ⁇ wiring arrangement; f f
  • ⁇ Adjacent to the microphone is a switch@ which 1* may, by means'of a known form ⁇ of lock, be' under the sole control of the oiicerin command.
  • ⁇ i ' The microphone is connected bymeansof a suitable electrical network to an amplifier 14 preferably disposed in Va central protected. position,"such as" the radio room. native oremergency use may be provided, if deslred, and located inthe gyro room of the ship. ⁇
  • Such stations ' may be, for' example, J
  • the switch 3 at the control point is a distributing switch by which, at the will of the ocer in control, the microphone and amplifier may be put into communication with all stations at once or with one or more selected stations.
  • microphone and switch assembly may, if desired,
  • An additional microphone and switch assembly I'I for emergency use are fixed adjacent to the after binnacle and both microphones are connected by alternative systems of wiring to the ampliiiers and to the loudspeakers.
  • the wiring systems are indicated in chain lines and in dot-and-dash lines respectively in Fig. 1, and are preferably spaced apart in the ship in order to lessen the risk of simultaneous damage to both systems.
  • the electrical conductors are suitably concealed and are insulated by iireproof insulation and/or contained in fireproof sheaths or channels.
  • the main microphone I is shown in a circuit having a source of E. M. F. I8, depicted as having one polegrounded; grounded ⁇ circuits being generally employed on shipboard.
  • the additional microphone I1 is shownin similar circuit having a source of E. M. F. I9. also depicted with -one pole grounded.
  • the selecting switch 3 is shown as connected in series with the microphone I and source of E. M. F. and has, by way of example, four poles or contacts engaged by a switch arm 30 by which three loudspeakers may be separately operated or all operated simultaneously. These contacts are denoted respectively 3
  • the outlets-to which the loudspeakers are connected are shown as comprising terminals 62 and 63, 12 and 13, and 82 and 8 3, respectively, that are each bridged by a resistance which is preferably that of the driving units 2
  • the terminals 63, 13, and 83 each have connections, as shown at 64, 14, and 84, respectively, for grounding them, in
  • the switch arm 30 When it is desired to operate all the loudspeakers simultaneously, the switch arm 30 is moved into engagement with contact 34, provided for this purpose, which connects at one time all the circuits to the loudspeakers in parallel but in series with the microphone. To this end, there is shown a conductor 35 leading from the contact 34 that has a branch 36 leading to conductor 4
  • 1 are shown as comprising conductors 4
  • the selector switch 3a has contacts 3
  • a contact 34EL provided t0- co'rrespond to contact 34 has connections whereby it connects all the loudspeakers for actuation in parallel.
  • a master switch 65'l likewise has two operative positions similar to that shown at 65.
  • the microphone may be made to actuate the loudspeakers at outlets 6
  • This actuation may be made to take place through either of the parallel systems in the network, depending on the position of switches 44, 45, and 46; the master switch 66 being, of course, in position to connect the microphone in service.
  • Similar actuation of the loudspeakers may be had from the additional microphone I1 by moving the selector switch 3'i to engage cor responding contacts, since the selector switches are substantially identical.
  • the ampliiiers are,
  • 'Ihe loudspeakers are preferably of the character shown in my said copending application; a suitable form thereof 'being shown inFig. 4, where 20 denotes the driving cone operated by a permanent driving unit 2
  • the driving cone is supportedat its periphery by a ring 21 which is perforated to allow of free passage of air to and ⁇ from the space between the cones.
  • Both cones are of metal and the driven cone is either of rustproof material or has its outer face painted, and if desired, a protective grating may be employed over the face of the driven cone.
  • 'Ihe ⁇ speaker unit is enclosed in a damp-proof cylindrical casing 23, the back 24 of which may readily be removed for inspection by undoing holding screws 25 and the front of the casing being formed by the driven cone itself.
  • each loudspeaker is preferably 15 watts at ⁇ least. ⁇
  • the adjustments l of theloudspeakers are such as to make it suitwall of' the cabin, that wall or plate may act as a baille plate around the driving and driven cones, while in the case of the boat stations, the
  • t loudspeakersyof the type described may be embodied in a standard of each davit or in the ships plating adjacent to each boat station.
  • the loudspeaker stations according to this invention may be arranged or duplicated accordingly. Since certain changes may be ⁇ made in the above construction and different embodiments of the invention couldbe ⁇ made without departing from the scope thereof, it is intended that all matter contained in the above description or j shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
  • a ships lsignaling system the combination with a microphone located at al control point in the ship,rof an electrical network connected to said microphone, said network comprising duplicate wiring systems ⁇ running throughout the ship and located some distance apart, said systems having ⁇ common outlets located at selected stations in said ship, and loudspeakers of a charact/er adapted to reproduce sound connected to said outlets; said systems being adjusted to reproduce acous'tically the signals entering said microphone at said loudspeakers with a volume of sound above a predetermined noise level.
  • loudspeakers capable of reproducing sound with a highly penetrating quality connected respectively to said outlets and adjusted to reproduce signals with a volume of sound above a predetermined noise level.
  • the combination with microphones located respectively on the bridge and adjacent the binnacle, of an electrical network connected to said microphones comprisingduplicate wiring systems located some distance apart and having a plurality of common outlets located at selected stations in said ship, loudspeakers capable of reproducing sound so as ⁇ to have a highly penetrating quality connected to. each of said outlets, and selecting l switches connected in said network adjacent each of said microphones whereby one or more of said loudspeakers may be selectively operated at will.
  • loudspeakers which have a. moistureproof casing set in a wall of the ship and a rustproof diaphragm closing the front of the loudspeaker.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
US13243A 1934-09-22 1935-03-27 Ship's signaling system Expired - Lifetime US2074172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27278/34A GB444590A (en) 1934-09-22 1934-09-22 Improvements in or relating to ships' telephones

Publications (1)

Publication Number Publication Date
US2074172A true US2074172A (en) 1937-03-16

Family

ID=10256967

Family Applications (1)

Application Number Title Priority Date Filing Date
US13243A Expired - Lifetime US2074172A (en) 1934-09-22 1935-03-27 Ship's signaling system

Country Status (3)

Country Link
US (1) US2074172A (fr)
FR (1) FR791976A (fr)
GB (1) GB444590A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516845A (en) * 1945-10-05 1950-08-01 Int Standard Electric Corp Telephone call-box system
US2655566A (en) * 1949-05-03 1953-10-13 Abraham L Pittinger Explosion-proof acoustic device
US2673894A (en) * 1945-12-11 1954-03-30 Jr Robert L Wallace Interlocking switch for intercommunication systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516845A (en) * 1945-10-05 1950-08-01 Int Standard Electric Corp Telephone call-box system
US2673894A (en) * 1945-12-11 1954-03-30 Jr Robert L Wallace Interlocking switch for intercommunication systems
US2655566A (en) * 1949-05-03 1953-10-13 Abraham L Pittinger Explosion-proof acoustic device

Also Published As

Publication number Publication date
GB444590A (en) 1936-03-23
FR791976A (fr) 1935-12-20

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