We'll take you with us
Historical documentation and articles
Hans Neufeldt and Karl Kuhnke founded the Kiel company Neufeldt & Kuhnke in 1899. Until 1936, the company stood for excellent and very durable technical products. Then the name was changed in the same year. Unfortunately, the previous brand was forgotten as a result.
We will share with you old and interesting reports from a bygone period in our company's history.
Portrait
Hans Neufeldt & Karl Kuhnke
Source: City archives in Kiel (https://www.kiel.de/de/bildung_wissenschaft/stadtarchiv/index.php)
Annual overview
1899
Main house
Source: City archives in Kiel (https://www.kiel.de/de/bildung_wissenschaft/stadtarchiv/index.php)
1905
Desk telephone
Designation: OB telephone model 05 with two inductor cranks and connection box. In the OB operation,
also known as the local operation, The voltage source to power the microphone is in place, i.e. at the participant.
No direct current flows in the line, only the alternating speech current that is inductively transmitted to the line.
Such table telephones were produced as standard devices in the German Empire from 1905 onwards.
Source: Internet (https://www.alte-messgeraete.de/telefontechnik/fa-neufeld-kuhnke-kiel/ob-telefon-modell-ob-05/)
1910
Kutter
This cutter from 1910 was powered by an N&K Type II Z B 4 engine. As far as we know, the engine is a 1 or 2 cylinder hot bulb engine.
Previously it was assumed that N&K only started producing engines in the 1920s, but now we know that it was as early as 1910 N&K marine engines existed.
So we see here a particularly historically valuable document.
1912
Ravensberg factory premises
Source: City archives in Kiel (https://www.kiel.de/de/bildung_wissenschaft/stadtarchiv/index.php)
Ravensberg factory premises
Source: City archives in Kiel (https://www.kiel.de/de/bildung_wissenschaft/stadtarchiv/index.php)
1914
Tank diver
1916
Tank diver
load curve
Source: City archives in Kiel (https://www.kiel.de/de/bildung_wissenschaft/stadtarchiv/index.php)
Source: City archives in Kiel (https://www.kiel.de/de/bildung_wissenschaft/stadtarchiv/index.php)
1917
Diving training
1917
Submarine training
1917
Plan of Ravensberg plant
Source: City archives in Kiel (https://www.kiel.de/de/bildung_wissenschaft/stadtarchiv/index.php)
1920
Ravensberg plant
1924
N&K double headphones
1924
German Radio Museum supplement
1925
Newspaper archive
1925
Electric motor
This is an original Neufeldt and Kuhnke electric motor from 1925 (110 V).
This engine ran in a carpentry shop in Eisenhüttenstadt
until a few months ago and drove a band saw there using leather belts. It weighs an estimated approx. 150 kg.
1927 / 1928
Hornless speakers
1928
Radio hobbyist
1930
N&K radio
1930
Headphones NYC
1933
Tone control
Short info:
Back then, the tone control was plugged between the radio and the headphones (or, if necessary, a record player and radio). It increases the resistance of the electrical line to:
7.5 x 1000 cm or 22.5 x 1000 cm, or in other words: 7.5 x 10 meters = 75 meters of standard copper cable, or 22.5 x 10 meters of standard copper cable
1934
Newspaper article armored diver
1935 - 1936
Neufeldt & Kuhnke Horn
Short info:
You are looking at one of the last horns (horn speakers) that N&K still made!
In contrast to the earlier models, the body is made of papier-mâché and the horn is made of very thin sheet metal.
Therefore, it probably dates from a time shortly before the war, as the usual horn loudspeakers were made of cast iron and solid sheet metal.
1935
Nordmark
1936
Nordmark
1936
Hagenuk Neufeldt and Kuhnke controllers
1941
Postcard to Dr. Neufeldt
1977
Kiel News
1977
Kieler Nachrichten - further excerpts -
2020
N&K is registered as a trademark
2023
New foundation - commercial register entry
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• Contact •
Neufeldt & Kuhnke GmbH & Co. KG
Boninstraße 25
24114 Kiel
Germany
Phone: +49 (0) 431 – 70 57 95 91
Fax: +49 (0) 431 – 70 57 95 89
E-mail: kiel(at)neufeldt-kuhnke.de