US3273228A - Method for opening a watchcase - Google Patents

Method for opening a watchcase Download PDF

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Publication number
US3273228A
US3273228A US292025A US29202563A US3273228A US 3273228 A US3273228 A US 3273228A US 292025 A US292025 A US 292025A US 29202563 A US29202563 A US 29202563A US 3273228 A US3273228 A US 3273228A
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US
United States
Prior art keywords
watchcase
glass
lodging
cover member
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US292025A
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English (en)
Inventor
Morf Ernest
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3273228A publication Critical patent/US3273228A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/06—Devices for shaping or setting watch glasses
    • 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
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • 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
    • G04B39/00—Watch crystals; Fastening or sealing of crystals; Clock glasses
    • G04B39/02—Sealing crystals or glasses
    • G04B39/025—Sealing crystals or glasses without special sealing parts
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D1/00—Gripping, holding, or supporting devices
    • G04D1/10—Devices for opening or closing watch bottoms or covers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y10T29/49822—Disassembling by applying force
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator

Definitions

  • This invention relates to watertight watchcases comprising a cover member fitting a lodging of a watchcase body member to close the watchcase tightly and in particular to the methods for opening such a watchcase.
  • the watchcases of the type more particularly considered here usually comprise a one-piece metallic section constituting both the case band and the bottom and the cover member provided for closing the watchcase consists of the glass.
  • the glass comprises an outer flange extending around the glass sleeve tightly fitting the corresponding lodging of the metallic watchcase section constituting the case band and the bottom.
  • This glass can be removed by inserting a blade, such as for instance a knife blade, successively at different points under the glass flange and by lifting the glass progressively out of its lodging.
  • a blade such as for instance a knife blade
  • said bezels comprising an inner rim extending under a glass shoulder.
  • the blade is here, however, inserted under the metallic bezel and not under a glass flange and the bezel distributes the lifting force exerted by the blade regularly on a relatively large glass flange portion so that this glass flange is not submitted to exceedingly high stresses concentrated in one point and does therefore no longer risk to become jagged.
  • the watchcases comprising such a bezel have to be made thicker than necessary thus causing an unaesthetic effect. It is of course well known to those skilled in the art that a watch movement having a relatively great thickness in its center portion can nevertheless be mounted in a watchcase so as to give the impression of a very flat watch if the peripheral part of the watchcase is made very thin. Now, the extra bezel above-mentioned has the drawback to give a watch With a movement having a predetermined thickness the appearance of being thicker than a watch with a movement which is thicker than said predetermined thickness but the casing of which does not comprise an extra bezel.
  • watchcases have been made with a glass comprising a portion protruding from the metallic body member of the watchcase, said protruding glass portion being arranged so thatit may be gripped by means of a tool adapted for exerting not an axial but a radial pressure on the glass.
  • a tool adapted for exerting not an axial but a radial pressure on the glass.
  • One of these tools chiefly comprises a split ring which can be set around a cylindri- "ice cal glass portion and then closed under strong pressure by means of tongs.
  • Another known tool provided for the same purpose comprises a plurality of jaws (15 to 20) each located on a lever mounted for rocking motion about an axis which is perpendicular to that of the watchcase when the jaws of said tool surround the cylindrical surface of the glass protruding from the watchcase metallic section.
  • a movable core of said tool enables causing all these levers to rock simultaneously, to grip the glass between said jaws and to exert a strong radial pressure thereon.
  • the strengthening ring would be subjected to a permanent deformation and would then be unable to press the glass sleeve satisfactorily against the wall of its lodging when the watchcase would be closed again.
  • the tool comprising a plurality of jaws as indicated above the glass is exposed to the same danger. Moreover, if said jaws are pressed too strongly against the glass, they produce markings on the periphery of the latter.
  • Still another object of the invention consists in pressing a limited amount of air into a watchcase tightly closed by a cover member fitting a lodging of a watchcase body member, thereby producing a pressure increase inside the watchcase, which is sufiicient in order to cause said cover member to jump out of its lodging.
  • the inner pressure of the watchcase can be increased from outside the same for instance by means of a pump introducing air through an opening provided through the Wall of the watchcase, said opening being usually tightly closed by a removable stopper.
  • a watch comprising a winding and hand setting stem in two pieces, one of the same extending within a passageway of the watchcase body memberand being removably connected by resilient means to the second stem piece which extends within the movement, the passage through which air can be introduced into the watchcase in order to increase the inner pressure thereof will of course be the stem passage.
  • the method according to' the invention can be performed by removing first the outer stern part together with the crown, by connecting the outlet of a pump to the stem passage and by increasing the inner watchcase pressure by means of said pump.
  • FIG. 1 is a part diametrical section of the watchcase which can be opened by the method according to the invention.
  • FIG. 2 diagrammatically illustrates how the method according to the invention can be carried out.
  • the movement 1 of the watch represented in FIG. 1 is located in a watchcase comprising a single metallic piece 2 which constitutes both the case band and the bottom.
  • This piece 2 is formed with a shoulder 3 serving as support for the outside flange 4 of the move ment base-plate.
  • Piece 2 is further provided in its upper portion with a lodging 5 which serves to receive the glass 6.
  • the latter closes the casing of the watch represented.
  • it comprises a cylindridical sleeve 7, which enters the lodging 5 and which is pressed against the cylindrical wall of this lodging by a strengthening ring 8.
  • the casing of the watch represented is finally provided with a passageway 9 in which a pipe 10 is tightly inserted.
  • a first piece 11 of a winding and hand setting stem extends within passage 9 and pipe 10.
  • a rusual winding crown (not shown) is fixed to the stem piece 1 1 and is provided with a Watertight gasket extending between a crown portion and pipe '10.
  • the inner end of piece 11 is split lengthwise and provided with a transversal bore so as to form two resilient jaws 12 and a lodging 13.
  • a second stem piece extends within movement 1.
  • This second stem piece comp-rises a flat portion 14 protruding from the movement and ending in a thicker portion 15 normally extending within bore 13.
  • the two stem pieces are connected to each other by portion 15 and bore 1 3 so that they are simultaneously both driven in rotation and shifted axially upon rotating the crown or moving the same in axial direction from its winding postion into its hand setting position or vice versa.
  • the stem piece 11 is split over a sufficient length in order to form jaws I12 which have such an elasticity that both pieces of the stem can be disconnected from each other upon exerting a strong axial thrust on the'crown.
  • multiple usually chosen can be as great as ten without exposing the stem portions ensuring the coupling of the two stem pieces from any damage due to a stress exceeding the limit of elasticity when the two stern pieces are disconnected from one another or connected again to each other.
  • the crown is first removed by exerting an axial pull on the latter, which is strong enough in order to cause the jaws 12 to move away from one another and to leave the thicker portion 15.
  • Pipe 10 is then-connected to the outlet of a pump or of any other installation, apparatus or device arranged for increasing the air pressure within the cavity of the watchcase. This installation, apparatus or device is then actuated so as to increase the air pressure within the casing until the glass 6 jumps out of its lodging. A pressure of 3 to 4 atmospheres is usually sufficient in order to urge the glass 6 out of its lodging.
  • FIG. 2 A tool which can advantageously be used to perfor the method according to the invention is represented diagrammatically in FIG. 2.
  • This tool consists of a pump provided with a valve. It comprises a body member 16, a nozzle 17 and an actuating button 18 connected to a piston. After having removed the crown in the manner described above, pipe 10 is introduced into nozzle 17 and button 18 is pressed sometimes until the pressure within the watchcase causes the glass 6 to jump out of its lodging. In this manner no violent air blow is produced within the watch movement so that there is no risk to blow the lubricating oil from the bearings away or to injure the hair-spring at the moment at which the glass leaves its lodging.
  • the air remaining in the pump cylinder of the tool described and which suddenly enters the watch movement under the pressure exerted thereon by button 18 when the watchcase opens is indeed very small.
  • a tool comprising a pump of very small capacity one could also resort to a tool which can remove the glass in a single pumping operation. With such a tool the pump capacity should however be chosen in function of the volume of the watchcase cavity in order to avoid a strong air jet into the watch movement when the watchcase opens.
  • the method according to the invention has the advantage to permit opening watchcases of any sizes.
  • the watch needs only be provided either with a stem in two pieces of the type disclosed above or with a particular passageway extending through the wall of the watchcase and being tightly closed by means of a removable stopper.
  • Another advantage of'the method according to the invention is due to the fact that this method permits manufacturing a watchcase having a very fiat appearance.
  • this method permits manufacturing a watchcase having a very fiat appearance.
  • it is sufficient to provide a lodging 5, the depth of which is equal to that of the lodgings usually provided in the known casings with removable bottoms and arranged for receiving a glass carrying a strengthening ring.
  • the glass 6 has not to be arranged so as to offer a grip accessible from outside the watchcase.
  • the upper glass surface can thus be made flush with the upper portion of the watchcase body member as with the known casings provided with a removable bottom.
  • a method for opening a watchcase tightly closed by a cover member fitting a lodging of a watchcase body member comprising the steps of connecting the watchcase cavity to an air chamber having a predetermined volume, and urging the air from said chamber to said cavity, the predetermined air volume of said chamber thereby producing inside the watchcase a pressure increase strong enough to cause the cover member thereof to jump out of its lodging.
  • a method for opening a watchcase tightly closed by a cover member fitting a lodging of a watchcase body member and a winding and hand setting crown fitting a pipe tightly inserted in a passageway provided through the wall of the watchcase comprising the steps of removing the crown and pressing through the pipe associated therewith a limited amount of air into the watchcase, thereby producing a pressure increase therein which is sutficient in order to cause the cover member thereof to jump out of its lodging.
  • a method for opening a watchcase tightly closed by a cover member fitting a lodging of a watchcase body member and by a winding and hand setting crown fitting a pipe tightly secured to the watchcase comprising the steps of removing the crown, connecting the pipe associated therewith to an air chamber having a predetermined volume, and pressing the air from said chamber through said pipe into the watchcase, thereby producing a pressure increase therein strong enough to cause the cover member thereof to jump out of its lodging.
  • a method for opening a watchcase tightly closed by a cover member fitting a lodging of a'watchcase body member comprising the steps of connecting the watchcase cavity to an air chamber and urging air from said chamber into said cavity thereby producing inside the watchcase a pressure increase strong enough to cause the cover member thereof to jump out of its lodging.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Joining Of Glass To Other Materials (AREA)
US292025A 1962-07-04 1963-07-01 Method for opening a watchcase Expired - Lifetime US3273228A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH804462A CH376437A (fr) 1962-07-04 1962-07-04 Procédé pour ouvrir un boîtier de montre étanche

Publications (1)

Publication Number Publication Date
US3273228A true US3273228A (en) 1966-09-20

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Application Number Title Priority Date Filing Date
US292025A Expired - Lifetime US3273228A (en) 1962-07-04 1963-07-01 Method for opening a watchcase

Country Status (2)

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US (1) US3273228A (en:Method)
CH (2) CH804462A4 (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5102735A (en) * 1987-01-26 1992-04-07 Toray Industries, Inc. Latent looped yarn, a fabric made of the same, and a method for manufacturing the latent looped yarn

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH682200B5 (fr) * 1992-03-09 1994-02-15 Smh Management Services Ag Procédé pour ouvrir une boîte de montre et appareil pour la mise en oeuvre de ce procédé.
EP3835888B1 (fr) 2019-12-09 2022-07-13 Montres Rado S.A. Outillage et procede pour la depose d'un verre de montre

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US961375A (en) * 1909-07-06 1910-06-14 Bagster Roads Seabrook Method of separating axle-couplings.
US1883662A (en) * 1930-05-22 1932-10-18 Standard Ig Co Method of removing liners from pressure vessels

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US961375A (en) * 1909-07-06 1910-06-14 Bagster Roads Seabrook Method of separating axle-couplings.
US1883662A (en) * 1930-05-22 1932-10-18 Standard Ig Co Method of removing liners from pressure vessels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5102735A (en) * 1987-01-26 1992-04-07 Toray Industries, Inc. Latent looped yarn, a fabric made of the same, and a method for manufacturing the latent looped yarn
US5312677A (en) * 1987-01-26 1994-05-17 Toray Industries, Inc. Latent looped yarn, a fabric made of the same, and a method for manufacturing the latent looped yarn

Also Published As

Publication number Publication date
CH804462A4 (en:Method) 1963-12-14
CH376437A (fr) 1963-12-14

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