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Dwell Run Dwell Mechanism

IP.com Disclosure Number: IPCOM000086382D
Original Publication Date: 1976-Sep-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Clark, WD: AUTHOR

Abstract

This mechanism produces a dwell-run-dwell output of a pulley, with an input which consists of unidirectional shaft rotation. The output pulley experiences harmonic acceleration as it leaves and enters the well state.

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Dwell Run Dwell Mechanism

This mechanism produces a dwell-run-dwell output of a pulley, with an input which consists of unidirectional shaft rotation. The output pulley experiences harmonic acceleration as it leaves and enters the well state.

The input comprises shaft 70, which continuously turns clockwise when viewed from the right of Fig. 1. This shaft turns freely on stationary shaft 60 by bearings, not shown. Output pulley 32 is bearing-supported on shaft 60. A disc- like sector 61 is rigidly fixed to shaft 70 and rotates therewith. Sector 61 supports two shafts 62 at closely spaced points about its circumference, for example at 12 o'clock and a few degrees thereafter, as viewed from the right in Fig. 1. The axis of each of these shafts extends normal to the axis of shaft 60 and intersects this axis. Each of the two shafts 62 rotationally supports a gear 88.

As seen in the top view of Fig. 2, each gear meshes with axially spaced ring gears 82 and 87 carried by members 80 and 85, respectively. Ring gear 87 and member 85 rotate freely on shaft 70. Ring gear 82 and member 80 are rigidly mounted on shaft 60 and are thus stationary.

Each of the two gears 88 and each of the ring gears 82 and 87 include a half- round socket adapted to periodically hold the shaft 63 of a drive pin having a head 83. As seen in Fig. 2, these sockets are aligned at one position of gears 88 and ring gears 82 and 87.

One clockwise revolution of input shaft 70 produces two clockwise revolu...