US1941237A - Hand telephone - Google Patents

Hand telephone Download PDF

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Publication number
US1941237A
US1941237A US521894A US52189431A US1941237A US 1941237 A US1941237 A US 1941237A US 521894 A US521894 A US 521894A US 52189431 A US52189431 A US 52189431A US 1941237 A US1941237 A US 1941237A
Authority
US
United States
Prior art keywords
handset
dial
hand
telephone
microphone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US521894A
Other languages
English (en)
Inventor
Weeber Otto
Soldan Otto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens Corp
Original Assignee
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US1941237A publication Critical patent/US1941237A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets

Definitions

  • the telephone table instruments with automatic operation, normally used may be divided of instrument has the disadvantage that, in
  • the combined microphone and telephone such as used in a hand set is of advantage to the user.
  • the pillar instrument has also the advantage'that thev standing place of the. instrument isof no consequence to the user with regard to theoperation of the dial as the instrument'is taken in the hand for speaking purposes but has. the great drawback that both hands must be used for holding the instrument when speaking as the 3 telephone is not fixed to the apparatus. If, on
  • the dial for this purpose is located near the microphone mouthpiece onthe side of the ear cap, inside a space limited by the plane of the ear cap.
  • This arrangement of the dial and corresponding design of the casing body makes it possible to hold the handset, while in its normal position, in a comfortable grip and bring it into the-service position for dialling and later into the I speaking positionin an easyandnatural manner Without a change ofvgrip or unpleasant twisting of the handsbeing necessary.
  • the handset is hereby improved, with; regard to its equalized, weight and thus offers a particularly easy and comfortable handling.
  • this arrangement consists in that'the length of 35 the handset can be limited to a minimum with the result that the weight of the instrument is increased only a little.
  • handling of such an instrument is alsomore pleasant and the'cost of production favourably 1 influenced.
  • H One embodimentof the invention is shown in the drawings in various, viewsand more completely' described in the following:
  • Fig. 1 shows a handset-in side view-and part 7 of the invention
  • Fig.5" shows a sectionof the handset in Fig. 4 according to-line C-D.. I
  • Figs. 6 and 7 are side views of still further modifications of construction. I
  • the numeral 1 represents the body' of the handset and 2 the ear cap of the telephone,
  • the casing body 1 forms a well 3 in its lower end
  • the casing body 1 at the part which forms the mouthpiece for the microphone, is provided with holes '7 as an entrance for the sound waves.
  • the lower hollow in the handset is. terminated by the dial 8.
  • the casing 3 for the dial 8, in addition to the microphone unit 4 and terminals 5, contains the calling key.
  • the latter .consists of a set of contact springs 10 and the switch pin 11', actuating them, which is so arranged thatit is permanently depressed as long as the handset rests in its normal position and thus an automatic switching operation is achieved.
  • the key and the associated switch member can also, of course, be fitted in the upper casing 2, e. g., in the case of a suspended normal position of the handset. 1 0
  • the lower portion of the handle 12 broadens toward the bottom and forms a casing 13 provided with a mouth-piece for the microphone and dial switch.
  • the lower opening of the casing 13 is entirely closed by the supporting surface, for example, the table on which it stands so that at the same time, dust is prevented from settling on the dial.
  • the lower part differs in construction from that of Fig. 6 in that the dial switch in this case is in the relation to the set as in the construction shown in Fig. l.
  • the arrangement offers a particularly comfortable handling, but requires a different construction of the lower casing body in order to obtain a supporting surface.
  • a projection 16 is provided at the lower part of the casing body 12 which, together with the flattened portion of the casing 13, furnishes the necessary supporting surface for the handset.
  • a handset of such design can be associated with a special base plinth 17, as shown, which forms the support for the handset in its normal position.
  • This base plinth can be covered with felt or the like so that the supporting points for the handset need not be damaged by the careless replacement of the handset.
  • the base plinth 17 can also be fitted to receive theconnecting cord.
  • the microphone and dial are located in a constricted arrangement in a space to the right of line AB drawn through the plane of the ear cap.
  • the re sult of this arrangement is that, in contrast to such designs of handsets with dial, in which the r latter is located on the back of the handset orin other arrangementson the front of the upper part of the handset and penetrates into the bordering line AB, operation is very much facilitated.
  • a turning round of the handset is necessary in order to dial, which is an unwanted exertion. If the dial, as mentioned, is located in the upper part of the front of the handset it is in the way for the user in the listening position due to its location at the ear cap.
  • the dial is located in the upper part of the front of the handset it is in the way for the user in the listening position due to its location at the ear cap.
  • the dial receives such a favourable position, as will be seen by the embodiment, that a particularly comfortable operation of the dial is achieved without the handset having to be brought into any one special position.
  • a base portion for supporting the hand telephone in an upright position, and an impulse transmitting device in the space surrounded by the material of said pedestal constituting the base portion.
  • a base portion for supporting the hand telephone in an upright position, a microphone cell and an impulse transmitting device, respectively, mounted inside the base portion thereof.
  • a handle having an upper portion arranged to receive a receiver. unit and having its lower portion bell shaped to form a casing for a microphone unit and impulse transmitting device, said bell-shaped portion also serving as a base for holding the hand tele-' phone in an upright position when not in use.
  • a unitary structure comprising a pedestal type hand telephone having a receiver and microphone cell mounted therein, a base for supporting the hand telephone in an upright position, and an impulse transmitting device'lying in a plane at substantially right angles to the receiver normally hidden from view by said base.
  • a hand portion serving as a casing, a receiver mounted on one end thereof, an opening in the other end, a transmitter mounted in said opening, an impulse sender mounted in the same opening over the transmitter and closing said opening, and another opening in the hand portion adjacent the transmitter.
  • OTTO WEEBER OTTO SOLDAN.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
US521894A 1930-06-08 1931-03-12 Hand telephone Expired - Lifetime US1941237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE612628T 1930-06-08

Publications (1)

Publication Number Publication Date
US1941237A true US1941237A (en) 1933-12-26

Family

ID=34812886

Family Applications (1)

Application Number Title Priority Date Filing Date
US521894A Expired - Lifetime US1941237A (en) 1930-06-08 1931-03-12 Hand telephone

Country Status (3)

Country Link
US (1) US1941237A (fr)
DE (2) DE612628C (fr)
FR (1) FR718324A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419388A (en) * 1941-07-10 1947-04-22 Ericsson Telefon Ab L M Telephone handset
US2506715A (en) * 1947-08-22 1950-05-09 Automatic Elect Lab Loud-speaking telephone station set with separate acoustic passages to the receiver and transmitter
US2822432A (en) * 1951-01-25 1958-02-04 Ericsson Telefon Ab L M Casing for telephone instruments

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490637A (en) * 1944-04-06 1949-12-06 Ericsson Telefon Ab L M Handset provided with a sound collecting lid movably mounted before the microphone
FR2415394A1 (fr) * 1978-01-24 1979-08-17 Lepoix Louis Telephone a commutation manuelle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419388A (en) * 1941-07-10 1947-04-22 Ericsson Telefon Ab L M Telephone handset
US2506715A (en) * 1947-08-22 1950-05-09 Automatic Elect Lab Loud-speaking telephone station set with separate acoustic passages to the receiver and transmitter
US2822432A (en) * 1951-01-25 1958-02-04 Ericsson Telefon Ab L M Casing for telephone instruments

Also Published As

Publication number Publication date
DE621185C (de) 1935-11-06
FR718324A (fr) 1932-01-23
DE612628C (de) 1935-04-30

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