. Automotive industries . eto for fixed spark installationsand to the rocking member of the magneto for variablespark ignition. In Fig. 11 is illustrated another well-known inter-rupter mechanism, of very novel design. This interrup-ter is of the rotating type. In this design the insulatedcontact is carried upon a spring that is secured at oneend to an insulated plate. The adjustable contact is thegrounded one. A triangular fibre lever that is pivoted atthe center acts through one of its corners upon the cams,which force the contacts apart. The third corner ismerely to balance the lever during
. Automotive industries . eto for fixed spark installationsand to the rocking member of the magneto for variablespark ignition. In Fig. 11 is illustrated another well-known inter-rupter mechanism, of very novel design. This interrup-ter is of the rotating type. In this design the insulatedcontact is carried upon a spring that is secured at oneend to an insulated plate. The adjustable contact is thegrounded one. A triangular fibre lever that is pivoted atthe center acts through one of its corners upon the cams,which force the contacts apart. The third corner ismerely to balance the lever during its rotation. In the discussion connected with Fig. 6 it was pointedout that a rocking break was very apt to be obtained ininterrupters in which the contact was mounted directlyupon the spring, due to a strengthening out of the springbetween the points F and F, immediately following theapplication of the force F,. May 26, 1921 CONTACT SPRINGHOUSING AUTOMOTIVE INDUSTRIES THE AUTOMOBILE ADJUSTING SCREW 1111 INSULATED PLATE. CONNECTING SCREWFig. 12—A type of interrupter usedin England. Fig. 13—A recent design ofterrupter. Fig. 14—A positively operated in-terrupter. In this particular application of this general type ofinterrupter it will be noticed that the spring has a doublebend between the contact point and the point at whichthe fibre lever acts. This stiffens the spring in the re-gion of the bend. The tension of the spring in this caseis, therefore, almost entirely on the other end of thespring, so that when the force tending to open the con-tacts is applied it is accomplished very effectively. Thesecret of the success of this particular application inavoiding the rocking of contacts is due to the bends inthe spring at the places shown. During rotation, the fibre lever is under the influenceof centrifugal forces. These are intended to be bal-anced by the triangular shape of the lever, but theforces are allowed sufficient surplus to always keep thelever away from the spr
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
