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Fahnestock clips are also used as safety devices on the arming wires of aircraft bombs; their grip on smooth bare steel wire is sufficient to prevent the wire from being withdrawn from a fuze during normal handling but light enough to allow the wire to be withdrawn when the weapon is released.
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for connections to bare wires. It is still used in educational electronic kits and teaching laboratories in schools. It is designed to grip a bare wire securely, yet release it with the push of a tab. The clip was patented in the United States on
February 26,
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can be inserted. Releasing pressure allows the tab to spring back, closing the hole and gripping the wire to form an electrically sound mechanical connection. Pushing the tab again releases the grip on the wire so it can be withdrawn.
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104:. However, they remain in use in elementary schools especially, where their ease of use and visible connections make them a popular way for science instructors to teach the creation of simple circuits, and most university
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It consists of a single flat piece of springy metal, bent over itself to form a clip. Pushing down on the end of the metal tab opens a hole through which a bare or
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by John Schade Jr., assigned to
Fahnestock Electric Co. Less than two weeks after the patent was issued they filed for reissue.
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power connections, and the like. They were also available on early dry batteries. Today, they have largely been supplanted by
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Fahnestock clips on home-made crystal radio, built in breadboard style. Modern diode detector installed between clips.
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A Fahnestock clip, showing how it grips a stripped wire. It can be released by pushing the tab down as shown.
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Crystal Clear: Vintage
American Crystal Sets, Crystal Detectors and Crystals
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159:, John Schade, "SPRING TERMINAL-CLIP", issued 1907-03-11
140:, John Schade, "SPRING TERMINAL-CLIP", issued 1907-02-26
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202:"Early Terminals: Fahnestock Clips - By Another Name"
178:
Official gazette of the United States Patent Office
92:Fahnestock clips were seen on early radio receiver
77:-resistance. Most Fahnestock clips seen today are
208:. Madison Books, Sonoran Publishing. p. 10.
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108:departments still have them on apparatus.
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57:Fahnestock clips were commonly made of
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175:United States. Patent Office (1907).
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200:Sievers, Maurice L. (1991–1995).
30:is an early type of spring clamp
119:Various Fahnestock clip designs
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238:The American Telephone Journal
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281:Electrical signal connectors
181:. The Office. pp. 3187–
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71:electrical conductivity
241:. 1905. pp. 638–.
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157:US patent RE12642
138:US patent 0845268
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37: (117 years ago)
286:DC power connectors
69:or copper for good
32:electrical terminal
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65:and plated with
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59:phosphor bronze
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28:Fahnestock clip
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253:"MIL-HDBK-145"
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257:. Retrieved
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219:. Retrieved
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183:. Retrieved
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63:spring steel
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185:February 6,
98:model train
275:Categories
124:References
94:breadboard
42:1907-02-26
81:-plated.
75:corrosion
255:. US DOD
259:June 8,
221:May 14,
106:physics
40: (
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79:nickel
261:2014
223:2022
210:ISBN
187:2013
73:and
35:1907
67:tin
61:or
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26:A
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189:.
44:)
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