File:Operation and adjustments of the automatic three wire telephone (1915) (14569388190).jpg

Identifier: operationadjustm00deck (find matches)
Title: Operation and adjustments of the automatic three wire telephone
Year: 1915 (1910s)
Authors: Decker, Benjamin Harrison
Subjects: Telephone Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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the same force. In actual practice it is difficult to alvmyshave this ideal condition. In the initial adjustment, the camis lined up relative to the dial, that is the cam is clamped tothe shaft so that when number 1 on dial is operated, cam toothnumber one only, will engege iraxmlse spring. Or when 5 on dialis operated, the first five cam teeth only will engage spring,and so on. This adjustment is made by setting cam so that whenfigure 1 on dial is pulled down to linger stop, the rear ofimpulse tooth number 1 will come even with the rear of verticalimpulse spring shoulder. In fastening cam to main shaft, thecollar clamp should be as tight as possible, for if cam shiftson shaft the relative position of cam teeth and dial numbers willbe changed, which would cause two cam teeth to engage springwhere only one was intended or vise-versa, thus giving the wrongnumber. Also in clamping cam collar a small amount of play mustbe left between cam and gear wheel or the two will bind. Further- -16-
Text Appearing After Image:
4-Com iA/hccI and Gear iA/hccIAssembly. G^ar yNhn^i 6.- Governor Shaft Cam CUm/t^i^f ^°^^<^^ n.-^ack Mook ^rv/. Catn Wh. - G<^^r Wheel raw/. 3, -Rotary CQm Toe

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