. Electrical world. her by several angle irons. 67, and bolts, 68. The supports, 65 and 66, in turn are fastened inplace by a number of angle irons, 69, and bolts, 70. A casting, 71,is pinned to a shaft, 72, which is journaled in the main casting, in two extensions from the casting, 71, and secured thereinby a bushing, 73, is a threaded shaft, 74. The upper extremity ofthe shaft, 74, is provided with several holes, 75, for enabling a closeadjustment to be made. Mounted upon the shaft, 74, is a member,76, having threaded therein a bolt, 77, which serves to journal alink, 78. The lowe
. Electrical world. her by several angle irons. 67, and bolts, 68. The supports, 65 and 66, in turn are fastened inplace by a number of angle irons, 69, and bolts, 70. A casting, 71,is pinned to a shaft, 72, which is journaled in the main casting, in two extensions from the casting, 71, and secured thereinby a bushing, 73, is a threaded shaft, 74. The upper extremity ofthe shaft, 74, is provided with several holes, 75, for enabling a closeadjustment to be made. Mounted upon the shaft, 74, is a member,76, having threaded therein a bolt, 77, which serves to journal alink, 78. The lower extremity of the link, 78, is journaled by apin, 79, in the upper end of the plunger, 57. A mechanical com-bination is situated adjacent to the suspension for revolving theshaft, 72, with each vibration of the pendulum. This arrangement consists of a journal casting, 80, which isfastened by several bolts, 81, to a wooden block, 82, in turn securedin place by several angle irons. 83, and bolts, 84. Journaled in the. FIG. 2.—ELECTRICAL SUSPENSION TYPE OF FOUCAULT PENDULUM. casting, 80, is a shaft, 85, which is mechanically connected with,but insulated from, the other shaft, 72, through the medium of twouniversal couplings, 86 and 87, tubes, 88 and 89, fibre joints, 90, andpins, 91. Secured upon the shaft, 85, by a key, 92, is a worm gear,93. The left-hand side of the worm gear, 93, is adapted to form afriction clutch in connection with a disc-shaped member, 94, whichis both journaled upon the shaft, 85, and maintained against theworm gear, 93. by a compression spring, 95, situated between theaforesaid disc, 94, and the journal casting, 80. A roller thrust bear-ing, 96, is placed between the worm gear, 93, and the journal casting,80. A worm, 97, mounted upon a shaft 98, which is journaled intwo bearings, 99 and 100, secured to the main casting, 80, by anumber of screws. loi, meshes with the worm gear, 93. An alter-nating-current motor. 102. is secured by a number of bolts, 103
Size: 1350px × 1850px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
