US3533227A - Signalling device - Google Patents

Signalling device Download PDF

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Publication number
US3533227A
US3533227A US702874A US3533227DA US3533227A US 3533227 A US3533227 A US 3533227A US 702874 A US702874 A US 702874A US 3533227D A US3533227D A US 3533227DA US 3533227 A US3533227 A US 3533227A
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United States
Prior art keywords
shaft
energy
lever
finger
arm
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Expired - Lifetime
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US702874A
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English (en)
Inventor
Rene P Jaccard
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BLESSING WERKE KG
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BLESSING WERKE KG
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    • G—PHYSICS
    • G04—HOROLOGY
    • 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
    • G04B23/00—Arrangements producing acoustic signals at preselected times
    • G04B23/02—Alarm clocks
    • G04B23/10—Alarm clocks with presignal; with repeated signal; with changeable intensity of sound

Definitions

  • a repeater-type alarm clock comprises a clock mechanism having a moving shaft.
  • An alarm mechanism cooperates with the clock mechanism and is adapted to be triggered by the same for release of stored energy.
  • a blocking arrangement is associated with the alarm mechanism and is capable of selectively blocking and unblocking the release of the stored energy.
  • An arrangement is provided for initiating the movement of the blocking arrangement to a position permitting release of stored energy in response to predetermined rotation of the rotary shaft.
  • the present invention relates to a signalling arrangement in general, and more particularly to an alarm clock. Still more specifically, the present invention relates to a triggering arrangement for repeater-type alarm clocks.
  • Repeater-type alarm clocks that is devices which generate an alarm signal at predetermined time intervals, are of course known.
  • the construction of the mecha nisms required for effecting the repetition of the alarm signal at predetermined time intervals is invariably very complicated, and therefore expensive and cannot be used with different types of alarm clocks. Rather, different types of alarm clocks require different repeater mechanisms.
  • a further object of the present invention is to provide such a mechanism which can be utilized without difficulties in alarm clocks of many different types, thus obviating the need for different repeater arrangements for different types of alarm clocks.
  • One'feature of my invention resides in the provision of a clock mechanism having a first moving member and a signal generating mechanism which is adapted to be triggered by the clock mechanism.
  • This signal generating mechanism includes an energy-storing element which is adapted to release stored energy and to initiate the generation of the signal in response to triggering by the clockmechanism.
  • Blocking means is associated with the signalgenerating mechanism and is adapted to move between a first and a second operative state in which it respectively blocks and permits the release of stored energy by the element.
  • initiating means is associated with the blocking means and with the moving member for the purpose of effecting movement of the blocking means to the second operative state thereof as a function of predetermined movement of the moving member, thereby enabling release of stored energy by the energy-storing element.
  • FIG. 1 is a diagrammatic elevation illustrating one embodiment of the invention in a condition in which the energy of the energy-storing element has been released;
  • FIG. 2 is largely similar to FIG. 1 but illustrates a condition in which the energy-storing element is in a condition in which it stores energy;
  • FIG. 3 corresponds substantially to FIGS. 1 and 2 but illustrates the device in a condition in which energy has been partially released by the energy-storing element
  • FIG. 4 is a fragmentary detail view on an enlarged scale, showing a further embodiment.
  • the arrangement according to the present invention comprises a bell-crank lever 9 having a shorter arm 9a and a longer arm which is bifurcated and consists of two portions, one of which is identified with reference numeral 9b and is relatively thick whereas the other is identified with reference numeral 96 and is relatively thin, as is evident from FIG. 1.
  • the free end portion of the arm portion 9b comprises an edge face 9e and a hook or nose-shaped section 9d.
  • the lever 9 is pivotable about a pivot 17 which mounts it on the platen 1. It is to be noted that the pivoting of the lever 9 is not opposed except for the presence of a very slight friction, for which purpose suitable means may be provided, such as a flat spring acting between the lever 9 and the platen 1.
  • suitable means may be provided, such as a flat spring acting between the lever 9 and the platen 1.
  • the lever 9 is not subjected to the action of a returning spring urging it in one or the other direction.
  • the free end of the arm 9a of the lever 9 has mounted thereon for pivoting movement about a pivot axis 14 a member 12 which is shaped as a segment of a circle. That end portion of the member 12 which is mounted on the arm 9a is part-circular and has the outline of at most 170 angle. It is provided with a radially extending face 12a, against which there abuts one end of a restoring spring 15 whose other end 16 is connected to the arm 9a so that the spring tends to pivot the member 12 in counterclockwise direction.
  • This movement of the member 12 is limited by two projections 9 and 9g which abuttingly cooperate with a third projection 12b which is so bent as to extend into the space between them.
  • the member 12 has a corner portion and a lateral edge face 12b which faces in the general direction of the pivot axis 17.
  • the arcuate free edge face of the member 12 is smooth in the illustrated embodiment. It cooperates frictionally with a similarly smooth wheel 13 mounted on the turning shaft 8 for rotation therewith.
  • the shaft 8 which carries the non-illustrated minute hand of the clockwork, rotates in the direction of the arrow F.
  • FIG. 1 illustrates my novel device in a position in which the spring 3 does not store energy, that is in which all energy originally stored in the spring 3 has been released. It will be seen that there is no contact between the lever 9 and the finger 11 and that the portion 126 of the member 12 abuts against the peripheral edge face of the wheel 13 downstream of an axial plane intersecting the shaft 8 and the pivot axis 14. In other words, in this position of the member 12 the portion 120 thereof will simply slide on the peripheral edge face of the wheel 13 as the shaft 8 turns in the direction of the arrow F.
  • the shaft 3a will be turned in the direction of the arrow 1 by means of the conventional knob or key which is not illustrated but which is provided on the shaft 3a in the usual manner.
  • the finger 11 engages the free end of the section 9c of lever 9 and pivots the lever about the pivot axis 17 in clockwise direction.
  • This position is determined by the projection 9 and can thus not be exceeded.
  • the shaft 3a can now be arrested against rotation in the direction oppositely the arrow 7, that is in an energy-releasing sense, in such a manner that the finger 11 is located in the position illustrated in FIG. 2 and will be enabled to perform almost a complete rotation when the shaft 3a is released for turning movement. It is to be specifically noted, however, that the shaft 3a can of course be arrested in any desired position, so that the finger 11 can similarly be arrested in any desired position.
  • the angular spacing of the finger 11 from the nose 9d of the arm section 9b that is the distance which it must traverse in clockwise direction before it abuts against the nose 90!, will determine how much energy can be released by the spring 3. This, in turn, determines for what period of time the alarm signal will initially be given.
  • the member 12 is thus turned about a pivot axis 14 in clockwise direction by rotary movement of the wheel 13, and during a predetermined period of time, for example, ten minutes, the edge face 12d of the member 12 will pass towards the right beyond the dead center position, that is beyond the axial plane intersecting the shaft 8 and the pivot axis 14.
  • the lever 9 turns about its pivot axis 17 as a result of the pressure exerted by the finger 11 into the position illustrated in FIG. 1. This releases the finger 11 for rotational movement with the shaft 3a in counterclockwise direction, that is in a direction opposite the arrow 1, and the energy remaining in the spring 3 is now released in full, producing a second and final alarm signal.
  • FIG. 4 Another possible modification is to provide cooperating teeth on the arcuate edge face of the member 12 and the peripheral edge face of the wheel 13. This is shown in the self-explanatory FIG. 4 where '83: is the shaft supporting wheel 13 and 12 is the same member as in FIGS. 1-3.
  • the teeth on wheel 13 and member 12 are identified with numerals 13 and 12', respectively.
  • the device can be used with platens of various different dimensions without requiring any changes in the construction or dimensioning of the platen.
  • the lever 9 can be mounted for pivoting movement in suitable bores which are usually provided in the housing surrounding the entire clock, or in a special support which can be provided for this purpose.
  • the members 10 and 13 can be simply press fitted on the respective shafts 3a and 8, and no modifications of the platen will be seen to be required,
  • a combination comprising a clock mechanism having a turntable first shaft including a portion provided with a circumferential surface which surrounds the axis of said first shaft; a signal generating mechanism adapted to be triggered by said clock mechanism and including an energy-storing element adapted to release stored energy and to initiate generation of a signal in response to triggering by said clock mechanism, and a turnable second shaft adapted to rotate in a predetermined direction in response to release of energy by said element; blocking means including a projection rigid with said second shaft for turning movement with the same in said predetermined direction, and a bell-crank lever having one arm and another arm, said bell-crank lever being pivotable between a first position in which said one arm engages said projection in a sense precluding turning of the latter in said predetermined direction and a second position in which said lever permits turning movement of said projection in said predetermined direction; and initiating means comprising a member configurated as a segment of a circle and having one end portion provided with an arcuate edge face
  • a clock mechanism having a turnable first shaft
  • a signal-generating mechanism adapted to be triggered by said clock mechanism and including a turntable second shaft and an energy-storing element connected with said second shaft and tending to turn the same to thereby release stored energy and initiate generation of a signal in response to triggering by said clock mechanism
  • blocking means associated with said signal-generating mechanism and including a lever pivotable between a first and a second position in which it respectively blocks and permits turning of said second shaft for the release of stored energy by said element
  • initiating means associated with said blocking means and with said first shaft and including an initiating member mounted on said lever and pivotable with reference to the same into engagement with said first shaft for effecting movement of said blocking means to said second position as a function of predetermined angular displacement of said turnable first shaft, thereby enabling the release of stored energy by said element.
  • said second shaft being arrestable in an angular position in which said projection is remote from said lever when the latter is in said first position thereof, and releasable when said signalgenerating mechanism is triggered to thereby undergo initial rotation and enable partial release of the stored energy, and said projection being adapted to engage said lever in said first position of the latter in response to such partial release of stored energy.
  • said energy-storing element being connected with said second shaft and said lever having two arms one of which is adapted to engage said projection, and wherein said one arm of said lever is longitudinally bifurcated and comprises a relatively thin first portion adapted to be engaged by said projection when said second shaft is turned in a sense effecting storage of energy in said element to thereby pivot said lever to said first position, and a relatively thick second portion adapted to engage said projection in response to initial rotation of said second shaft and partial release of the stored energy.
  • said second portion is resiliently flexible and comprises an inclined cam face so positioned as to be engaged by said projection in response to turning of said second shaft in a sense effecting storing of energy in said element, wh reby cooperative engagement of said cam face and said projection effects resilient flexing of said second portion to one side of the path described by said projection.

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Devices For Medical Bathing And Washing (AREA)
US702874A 1967-02-06 1968-02-05 Signalling device Expired - Lifetime US3533227A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH172567A CH491421A (fr) 1967-02-06 1967-02-06 Mécanisme de déclenchement pour réveil à alarme répétée

Publications (1)

Publication Number Publication Date
US3533227A true US3533227A (en) 1970-10-13

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US702874A Expired - Lifetime US3533227A (en) 1967-02-06 1968-02-05 Signalling device

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US (1) US3533227A (fr)
CH (2) CH172567A4 (fr)
FR (1) FR1552666A (fr)
GB (1) GB1156446A (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US881555A (en) * 1907-10-30 1908-03-10 Ansonia Clock Co Inc Repeating alarm-clock.
US2979885A (en) * 1956-01-21 1961-04-18 Samuel Jack Kaufman Automatically variable alarm for timepiece

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US881555A (en) * 1907-10-30 1908-03-10 Ansonia Clock Co Inc Repeating alarm-clock.
US2979885A (en) * 1956-01-21 1961-04-18 Samuel Jack Kaufman Automatically variable alarm for timepiece

Also Published As

Publication number Publication date
FR1552666A (fr) 1969-01-03
GB1156446A (en) 1969-06-25
CH172567A4 (fr) 1970-02-13
DE1673623B2 (de) 1972-10-26
DE1673623A1 (de) 1972-04-20
CH491421A (fr) 1970-02-13

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