# US 5,349,574 A · Horological movement having guide means for a control member such as a shaft

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- Number: US 5,349,574 A
- Document ID: US5349574A
- Status: Granted
- Kind: A
- Application number: 08/037,427
- Filed: 1993-03-26
- Granted: 1994-09-20
- Earliest claimed: 1992-04-02
- Assignees: ETA SA Fabriques d'Ebauches
- Inventors: Jakob Edwin; Siegfried Grau
- Web page: https://patentgrep.com/patent/US5349574A

## CPC

- G04B 29/02: Plates; Bridges; Cocks
- G04B 37/06: Forming the passage for the winding stem through the case; Divided winding stems {(watertight protection means for the winding stem G04B37/10; fixing the knob to the case G04B37/1466; winding and setting the hands with the winding stem with clutch wheel G04B27/04, with rocking bar G04B27/06)}
- G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08)

## Abstract

The instant invention relates to a horological movement provided with shaft guide means. This movement has horometric means (H) capable of supplying a time information and at least one control member (34) composed of the shaft and adapted to act on the horometric means (H), this control member (34) being guided axially and/or in rotation by the intermediary of guide means, this movement also being characterized in that said guide means are composed of three guide pieces (38, 40, 42) mounted and maintained sandwiched on one another to form therebetween a seating in which the control member (34) is freely received.

## Claims

### Claim 1

A horological movement comprising horometric means for supplying a time information, and guide means for guiding in at least one of axial and rotational movements at least one control member adapted to act on the horometric means, said guide means comprising two opposite guide parts and a third guide part forming an intermediary center bar mounted and sandwiched between the two opposite guide parts to form therebetween a seating for freely receiving said control member, said horometric means comprising at least one staff supported by said intermediary center bar, and one of said opposite guide parts forming a train bar for guiding said at least one staff of the horometric means.

### Claim 2 (depends on 1)

A movement according to claim 1 wherein said horometric means further comprises at least one train, and wherein the intermediary center bar and the opposite guide parts form supports for rotatably mounting said at least one train of the horometric means.

### Claim 3 (depends on 1)

A movement according to claim 1 wherein the intermediary center bar has a groove opening which is oriented along the axis of the control member and which guides the control member laterally.

### Claim 4 (depends on 3)

A movement according to claim 3 wherein said intermediary center bar insures the support of a motion-work.

### Claim 5 (depends on 3)

A movement according to claim 3 wherein the train bar and the other of said guide parts each have a boss which penetrates the groove opening of the intermediary center bar.

### Claim 6 (depends on 5)

A movement according to claim 5 wherein said train bar comprises a dished part having a plurality of positioning feet at least one of which rests directly on the intermediary center bar, and wherein the boss on said train bar is provided on one of said feet.

### Claim 7 (depends on 1)

A movement according to claim 1 wherein said train bar comprises a dished part having a plurality of positioning feet at least one of which rests directly on the intermediary center bar.

### Claim 8 (depends on 7)

A movement according to claim 7 wherein the other of said opposite guide parts forms a plate, and wherein said dished part is provided with three of said positioning feet at least one of which rests directly on the plate.

### Claim 9 (depends on 1)

A movement according to claim 1 further comprising said control member, and wherein said control member comprises a handsetting shaft adapted to act on said horometric means, said handsetting shaft supporting a sliding pinion and having a free extremity which is guided by said guide means.