Service Buzzer Model 1914 EE-63

Background
Description
Photos
Patents
Related
References
Links

Background

This field phone can operate either as a voice field telephone (Wiki) or as a Morse code unit.

Description

An excellent description and demonstration video is at Ref. 2.

Runs on two 3 Volt batteries, each of which consists of two "D" cells in series.
The Line Jack in the upper left corner accepts a modern Stereo 1/4" phone plug, but the factory plug has a much different look.

The cardboard with a couple of brass tubes shown in Fig 2 and Fig 5 below may be a battery adapter to allow using 4 each 1-1/2 Volt batteries instead of two long 3 V batteries.

Photos

Fig 1

Fig 2
Fig 3 cardboard the same size as battery
compartment with two metal fittings?

Fig 4 Three capacitors need to be removed
to get access to the rear two chassis screws (white circles).
Fig 5 Broken chassis corner. Will try Loctite.

Fig 6 1/4" Phone Plug & Broker rear corner

Patents

703004 Field-telephone set, Lambert Schmidt, 1902-06-24, - includes magneto generator
1274857 Field telephone and telegraph, Frank Pattison Cork, 1918-08-06, -
2518374 Magnetotelephone arrangement for direct current, Charles S Rhoads, Bell Labs, 1950-08-08, -
2888520 Generator-transducer switching system in a telephone system, Durbin Vernon, Ernest W Johnson, National Pneumatic Co, 1959-05-26, -

Field Phones
Fullerphone Mk. V - combined Morse and voice field phone - probably no way to call SB-22 Switchboard
TG-5-B Telegraph Set - Morse code only, not voice
EE-8 Field Telephone - Voice only, compatible with SB-22 Switchboard
TA-1 Sound Powered Field Telephone -
TA-312 Field Telephone -

General
Phones
Sound Powered Phones & old speakers
Telephone Patents

References

Ref 1. U.S. Signal Corps Field Telephones Timeline -
Ref 2. YouTube: Weekly Dose of Field Phones: Episode 59 - US Signal Corps Service Buzzer Model 1914, 5:40 -
Ref 3. Field Artillery Course for Provisional Second Lieutenants, (Google) pdf page 76, Lecture XI Telephone and Buzzer.

Links

PRC68, Alphanumeric Index of Web pages, Contact, Products for Sale
Page Created 2023 July 21

Fig 1	Fig 2	Fig 3 cardboard the same size as battery compartment with two metal fittings?
Fig 4 Three capacitors need to be removed to get access to the rear two chassis screws (white circles).	Fig 5 Broken chassis corner. Will try Loctite.	Fig 6 1/4" Phone Plug & Broker rear corner