US1743290A - Telephone hand set - Google Patents
Telephone hand set Download PDFInfo
- Publication number
- US1743290A US1743290A US265989A US26598928A US1743290A US 1743290 A US1743290 A US 1743290A US 265989 A US265989 A US 265989A US 26598928 A US26598928 A US 26598928A US 1743290 A US1743290 A US 1743290A
- Authority
- US
- United States
- Prior art keywords
- transmitter
- cap
- receiver
- handle
- openings
- 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
Links
Images
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
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
Definitions
- the present invention relates to improvements in or relating to handset combinations as used in telephone instruments.
- Such handsets comprise, as is well known, a handle having a receiver at one. end and a transmitter supported at the other end, so arranged that when the receiver is brought to the ear the transmitter comes in front of the mouth.
- the obje-ct ofthe present invention is a handset construction in which simplicity and cheapness of manufacture are combined with great durability, and the principal feature of the invention is that both the earcap and the transmitter cap are screwed directly on to the receiver and transmitter casings respectively, which casings are moulded in a single moulding including the handle betweenthe casings.
- FIG. 1 shows asection through a handset with receiver and transmitter casings.
- the receiver and transmitter which are constructed in the form of capsules, are omitted for the sake of clearness.
- Fig. 2 shows a front view of the novel handset, while Fig. 3 shows a side view with the ear cap and mouthpiece cap omitted.
- Fig. 4 shows an enlarged section on the line A-B of Fig. 1, while Fig. 5 shows a similar enlarged section on the line C-D of Fig. 1.
- the handset comprises a single moulding
- the moulding incorporates a brass or other metallic tube 13 extending from the receiver casing 11 to the transmitter casing 12 and serving to reinforce the handle, at the same timeproviding an opening through which conductors from the receiver may extend to the transmitter casing 12, and so through the opening 14a therein to the bell-box, together with the cords from the transmitter.
- the shape of this handset is novel, in that both the receiver casing 11 and the transmitter casing 12 have their axes somewhat out of the normal with respect to the straight portion 14 of the handle portion 10.
- receiver cap can be uniform all around, and
- the transmitter cap 16 being formed of a single stamping having a shape which may be said to resemble a hemisphere or spherical segment with the yupper portionV dented inwards so as to be substantially conical.
- This shape will be recognized in the section in Fig. 1 where the hemispherical portion is indicated by the reference 17, while the conical portion Vis indicated by the reference 18.V
- a series of holes 19 Which are better seen in Fig. 2 which extend all round the hemispherical portion of the cap at equal distances apart.
- the conical member 18 will serve Vto deflect the sounds coming from the 'user towards the diaphragm, and thus insure that the microphone is actuated by a sufiici'ent volume of sound waves as toV ensure efficient and satisfactory transmission.
- a transmitter mouthpiece comprising aV circular outer convex portion, a plurality of openings arranged around the circumference of said portion, and another convex portion vformed inside said first convex portion ⁇ for receiving sound waves impinged thereon from said openings and for directing them at an angle onto the transmitter.
- a transmitter mouthpiece comprising a single circular convex shaped vunit'with a plurality of .openings spaced regularly around the circumference thereof, and a conical convex portion formed in the centerof said unit and projecting opposite said openings so as to direct sound waves received through rsaid openings directly onto the transmitter.
- a transmitter mouthpiece comprising a circular convex shaped unit with ac plu'rality of openings spaced around the circumference thereof, a conical convex portion formed'in the center Yof said unit and projecting ropposite said openings so that soundwaves are received through said openings and diverted by said conical portion to the transmitter unit, and means for supporting saidmouthpiece unit on said transmitter unit in such a manner that irrespective of the position to w
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE302693X | 1927-12-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1743290A true US1743290A (en) | 1930-01-14 |
Family
ID=3867440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US265989A Expired - Lifetime US1743290A (en) | 1927-12-20 | 1928-03-30 | Telephone hand set |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1743290A (pl) |
| BE (1) | BE347422A (pl) |
| GB (1) | GB302693A (pl) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2456346A (en) * | 1945-01-24 | 1948-12-14 | Paul S Veneklasen | Sound shield for telephone transmitters |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2252474A (en) * | 1991-01-31 | 1992-08-05 | Chang Chin Lu | Microphone handle |
-
0
- BE BE347422D patent/BE347422A/xx unknown
-
1928
- 1928-03-30 US US265989A patent/US1743290A/en not_active Expired - Lifetime
- 1928-12-19 GB GB37532/28A patent/GB302693A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2456346A (en) * | 1945-01-24 | 1948-12-14 | Paul S Veneklasen | Sound shield for telephone transmitters |
Also Published As
| Publication number | Publication date |
|---|---|
| GB302693A (en) | 1930-01-23 |
| BE347422A (pl) |
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