GB253393A - Improvement in telephone attachments - Google Patents
Improvement in telephone attachmentsInfo
- Publication number
- GB253393A GB253393A GB2264625A GB2264625A GB253393A GB 253393 A GB253393 A GB 253393A GB 2264625 A GB2264625 A GB 2264625A GB 2264625 A GB2264625 A GB 2264625A GB 253393 A GB253393 A GB 253393A
- Authority
- GB
- United Kingdom
- Prior art keywords
- receiver
- attached
- clamp
- weight
- cord
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
253,393. Gransaull, L. E. Sept. 10. 1925. Earpieces; receivers fitted with horns; telephones, mounting and supporting.-In a telephone attachment of the type in which a sound amplifying means is combined with the mouth of the receiver and a weight corresponding to the receiver is suspended by a cord from the switch hook, an auxiliary bracket or divided clamp is provided to engage the standard 1 at 5 and the receiver 9 at 7. A thumb screw 11 is provided for fixing the clamp, which is provided with strips of felt or the like on the gripping faces. Attached to the clamp is a ring 13 for supporting the weight 4 in an inoperative positiom, the weight being attached by a cord 3 from the ordinary switch hook 2. The sound amplifying means comprises a base 14 attached to the mouth of the receiver by a wire arranged spirally or otherwise, a flexible tube 15 and a trumpet having a soft rubber earpiece 16, the tube being sufficiently long and flexible to bring the earpiece to the operator's ear.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2264625A GB253393A (en) | 1925-09-10 | 1925-09-10 | Improvement in telephone attachments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2264625A GB253393A (en) | 1925-09-10 | 1925-09-10 | Improvement in telephone attachments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB253393A true GB253393A (en) | 1926-06-17 |
Family
ID=10182803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2264625A Expired GB253393A (en) | 1925-09-10 | 1925-09-10 | Improvement in telephone attachments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB253393A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4823384A (en) * | 1987-12-24 | 1989-04-18 | Lindsay H. Industries, Inc. | Telephone apparatus for the hearing impaired |
-
1925
- 1925-09-10 GB GB2264625A patent/GB253393A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4823384A (en) * | 1987-12-24 | 1989-04-18 | Lindsay H. Industries, Inc. | Telephone apparatus for the hearing impaired |
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