DE2062932A1 - Method for determining the amount of movement of the armature of a clockwork with a balance wheel and an escapement - Google Patents

Description

Patent attorneys

Dipl.-Ing. K. EMPL
Munich 27, Schumannetr. 2

December 21, 1970 File: P 6988

GRBIITER ELEOTROHIO A · & ·, Langenthai (Switzerland) »

Method for determining the amount of movement of the anchor a clockwork with a balance wheel and an escapement.

About the waste error or some other size of movement To determine the armature of a clockwork with a balance wheel and an escapement, one has the shadow effect of a Part of the anchor is used to prevent movement to modulate the light beam penetrating through the anchor * The modulated light beam then hits a light electrical element Transducer, which in turn uses electronic amplifiers supplies electrical measurement parameters that determine the sequence of movements depicting the anchor because its application especially in movements of smaller

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iaessungen only with very complex and difficult to adjust ^ - making optical aids possible,

The present invention thus relates to a method to determine a movement size of the anchor one a Balance and an escapement movement, in which a beam of light penetrates the armature's range of motion and from the latter according to the respective position during its movement sequence is modulated * The deficiencies of this method briefly outlined above are now according to the invention fixed by letting the light beam into the clockwork on the side of his work plate} that the light beam hits one between the armature and the balance wheel Surface is reflected, which on an au. the work plate attached part of the clockwork is attached; and that the reflected light beam has the clockwork on its side Werkplatte leaves

Bine, for example, execution of the invention The method is explained in more detail below with reference to the drawing, in which the decisive components of a Clockwork of the usual design are illustrated in a perspective view and partially broken away.

The part of the work plate shown in the drawing 1 is shown in section, the cutting plane

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through the hole. 2 leads, in which the bearing block 3 to the • work plat igen bearing of the armature shaft 4 is attached · As usual, the armature has the two each provided with a lifting stone Anchor arms 5 and 6 and the anchor fork, not shown in detail in the drawing, which over the fork handle is connected to the armature arms 5 and 6 · The shaft journal of the armature shaft 4 facing away from the work plate 1 is like Usually stored in a further bearing block. 7, the latter being fastened in the anchor bridge 8 The anchor bridge 8 is screwed to the work plate 1 with its foot, which is no longer illustrated in the drawing To be able to adjust anchor arms 5 and 6 seated lifting stones, these anchor arms are assigned in the work plate 1 Acheva holes attached. In the drawing, only the pivot hole 9 assigned to the anchor arm 5 is shown. Furthermore, the drawing shows only part of the balance wheel β 10 and one of the balance spokes 11.

A particularly simple implementation of the inventive The method is now obtained when a light beam 12 of, for example, rectangular, through the achevag hole 9 Cross-section can fall in such a way that it is always on the one hand on the armature arm 5 and on the other hand the surface of the anchor bridge facing the anchor 5 to 6

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8 falls, on which the latter is reflected, -and afterwards exits the clockwork again through the bearing block 3 respective position of the anchor army 5, so that the exiting light beam 14 with regard to its cross section modulated according to the motion sequence of the anchor The drawing shows the surface parts of the anchor arm 5, the anchor * bridge 8, as well as the bearing part 3 each illustrated with narrow hatching ·

The optics not shown in the drawing for generating the incident light beam 12 and for taking off the reflected and modulated light beam 14 apparently comes without the aid of special deflecting mirrors and can be designed comparatively simply. Furthermore, because of the reflection on the armature bridge 8, the path 12, 13, 14 of the light beam running inside the clockwork is such that it passes through the spokes 11 of the balance wheel 10 cannot be influenced

When carrying out the method according to the invention it is not essential that the reflected

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and modulated light beam 14 the movement: leaves through the jewel 3 through. Rather, it could be in the work plate 1 an opening provided exclusively for the exit of the light beam 14 may be attached · In a corresponding manner Way, it would be possible to pass the light beam 12 not through an aevage opening 9, but through a special one In the work plate 1 for this purpose, inlet opening in To introduce the clockwork · Schliesslioh would have to be the reflection of the light beam to be carried out inside the clockwork do not necessarily take place at the anchor bridge 6; she could just as well take place on a surface located between the armature 5 to 6 and the balance wheel 10 to 11, which on a Another part attached to the work plate 1 is attached · When using such variants, it can then be advantageous eein, the modulation of the light beam with the help of the fork handle or to effect the anchor fork yourself »

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Claims (1)

-δ Patent claims i ') J Method for determining a movement quantity of the armature (5 to 6) of a clockwork having a balance wheel (10 to 11) and an escapement, in which a light beam (portion 13) penetrates the movement area of the armature (5 to 6) and from The latter is modulated according to the respective position during its course of movement, characterized in that the light beam (12) enters the clockwork on the side of its work plate (1); that the light beam (portion 13) is reflected on a surface located between the armature (5 to 6) and the balance wheel (10 to 11), which surface is attached to a part (8) of the movement that is attached to the movement plate (1); and that the reflected light beam (part 14) leaves the movement on the side of its work plate (1) 2 »Method according to patent claim; characterized, that the incident light beam (12) through a first opening (9) in the work plate (1) into the clock 109848/1124 work enters - and the reflected light et raiil (14) exits the clockwork again through a second opening (2) in the work plate (1). £ · method according to patent claim; characterized in that the surface on which the light beam (portion 13) is reflected is on the side of the anchor bridge (B) facing the anchor (5 to 6). O * method according to claim., Characterized in that that the light beam (component 13) is modulated by one of the two armature arms (5 or 6) JT * method according to patent claim .eoiMba 1 to ^, characterized in that the said first Opening (9) through which the light beam (12) enters the clockwork through a prepared in the work plate (1) existing Achevage opening is formed 6 · Method according to claim characterized in that said second opening (2) through which the reflected light beam (Part H) emerges from the clockwork again, through the opening in which the jewel is formed (3) for mounting the armature shaft on the worktop side (4) 109848 / 112A "is attached, so that the reflected light beam (type part 14) through this bearing jewel (35 through the clockwork leaves· GEEIKBR BLBOTROIiIO Α β, 1098A8 / 1124