US1392007A - Process of making watch-plates - Google Patents

Description

1. A. FBEUND.

P ROCE SS or MAKING WATCH PLATES. APPLICATION FILED AUG-8, I918- RENEWED JAN. 13.1921.

Patented Sept. 27 1921 awn c1113 JOSEPH a. FREUND Or nEwToNvr Ln,MAssAoHUsETrs.

Pnoonss on MAKING wA rcn r ATns.

Specification of L-etters Patent.

Application filed August '8, 918, Serial No: 248,521.

To all whom it may concern:

' jeweled on a which maybe formed with quill alimng pins. with the steady pin and useful Invention cated steady pin holes which,

Be it known that I, JosErH A. FREUND,

a citizen. of the United :States,{ancl resident of Newtonville, county of MiddlesemjState of Massachusetts, have made a certam new lowin is a isoe'cification taken in connec tion with the accomoan in -drawin which f l a a: 7

forms part of the same.

This invention relates to" processes of making, jeweling and assembling the supporting or frame members of time pieces, such as the plates ot watch can be readily and accurately alined and uprighted. The dial plate which is preferably a number of. times as thick-as the bridges may be formed "with a series of steady pin and locating holes as by jig drilling the 7 same therein andeach of the bridgeswhich are preferably formed of. relatively thin substantlally UlllfOIIIl sheet metal stock of I thickness maybe formed with-similarly loif desired, may be drilled in the bridges .byusing the same drill jig which was used the dial plate. It is sometimes possible to secure still greateraccuracy in these bearings by simultaneously drilling the correspending locating and steady pin holes in the dial plate and one or more of members which for this purposemay' be simultaneously assembled in connection with a suitable drill jig platev for example. Each of the bridge members may insuch ways he formed with two or more locating steady i'pin holes in thefsame relative location as the corresponding holes in thesdial plate so. as

to aline these'mcmbers by the use of disen gageable or other steady pins when the watch movement is assembled.

plate and bridgesmay advantageously be set of eweling quills, each of adapted to cooperate: 7 holes in the dial plate and bridges, which thus act as locating holes to accurately mount or locate the jewel and other bearings with reference to these steady pin holes. This automatically locates the bearingsfin the same position in thedial platefandcooperating bridge so that when the movement is assembled Relating to Processes of Making lVatch-Platesfof which the folinovements'so that the jewel orother bearings 1n the dial" 'ing devices as they may be used for plate and the cooperatingbridge members tor drilling the bridge in the dial Preferably 1 after the usual recessmg operations the dial fOI'111 and preferably of the-barrel bridge 2 these parts are brought into Patented Sept. 27, 1921.

Renewed January 13,1921. Serial m. 437,127.

alinement by the pinsin the locating steady p nholes so as to insure the accuracy and uprighting of these bearings and greatly.

promote interchangeability in such high grade watch movements.

Inthe accompanying drawing showing in a somewhat diagrammatic way methods of carrying out thisprocess, Figure 1 is a sectional; VlEW through jig drilling devices which may beused for drilling such locatmg steady pin or other holes in the dial plates, this view being taken substantiallyalong the line AA of f Fig. Flg. 2 1s a corresponding view of the drill- I drilling the br dge members.

FigiB is a corresponding-view through Jig drilling devices which may be used for' simultaneously drilling the dial plate and one or more bridge members therefor.

Fig. dis a partial sectional iew taken along the same" line showing the dial plate and the jewelin'g quillin connection therewith." i I i Fig. 5 is a similar view showing 'th isquill used for positioning the corresponding jewel in the bridge member.

Fig. 6 is a sectional view taken along the i the plates assembled to same line showing form-the watch movement; and

Fig. 7 is a face parts.

It is advantageous to; use the steady pin holes or devices which may be employed to insure thealinement of the bridge members and dial plate of the watch movement to View of these assembled locate the jewel and other bearings in these i watch plates during the manufacturing operations. ;For this purpose it is advantageous tofform a series of steady pin holes plate 1 of brass or other suitable located that two or more coop erate with each of the bridge members pref material so erably in amply separated position to insure the c g ber with the dial plate. 7 The' bridg'e memhere may, of' course,

'barrelbridge '2, and 8, 9, 10- in the case of the train bridge, the dial plate 1-having 'correspondi 'igly located steady pins ,82 which lesiredalinement of each bridge mcm-,

be, given any desired extend substantially may advantageously be disengageablesteady pins securely held in the steady pin holes exactly corresponding to those in the bridge members. The third bridge member or balance cock 4 indicated may have the steady pin holes 11, 12, 13 at sufiicientdistances apart to properly alinethe balance cock and hold it in desired position, when securing means, such as the screw 14, is tightened. Similar screws, such as 15, 16, 17, may be used in the barrel bridge and screws 18, 19, 20 in the train bridge.

In this process the steady pin holes may be formed or drilled in the dial plate by the use of a drill jig plate, such as 57 indicated in Fig. 1, which may be firmly secured against the dial plate 1 as by the clamping flange 52 which may be formed on the drill support 53. This flange may have a series of securing slots 55 formed therein of bayonet slot form so that the securing pins 54 in the jig plate may be wedged around in these slots to securely clamp the parts together upon the dial plate. The drill support may, of course, extend sufliciently beneath the dial plate to amply support it during the drilling operation and this portion may be formed with holes, such as 56, corresponding to the guide holes, such as 58, in the plate above and having ample clearance so as not to interfere with the drilling operation. Asindicated in Fig. 1, each of these steady pin holes may be accurately located and formed in the dial plate as by carefully drilling the same in connection with such a drill jig, the drill 66 being indicated as passingthrough and being guided bythe hole 58 in the hardened drill jig plate so as to form the steady pin or locating hole Sin the dial plate, the steady pin hole 9 being indicated as already formed in the dial plate in alinement with the guide hole 59 in the jig plate. In this way all of the locating or steady pin holes in the dial plate 1 may be formed in the dial plate in any desired positions, as indicated in Fig. 7, for instance, and it is desirable to have the drill jig engage the rear side of the dial plate withwhich the bridge members finally engage so that the steady pin holes are most accurately positioned on this side of the dial plate which is the base line or plane of the watch movement. The bridge members are preferably formed of sheet metal stock of any suitable composition which is preferably of uniform thickness, considerably thinner than the dial plate, and as indicated in Figs. 2 and5 the train bridge 3 may have a thickness only a quarter or so of the thickness of the dial plate. The steady pin or locating holes may be formed in the bridge members in any desired way as by punching or drilling at any desired stage of the shaping or forming of the bridge members, and it is in some cases advantageous to form these steady pin holes in the bridgemembers by the steady pin holes may be formed in the watch.

drilling them in the same drill jig devices or by the use of the same drill jig plate used to drill the steady pin holes in the dial plate. Fig. 2 indicates the drilling of the steady pin holes in the train bridge 3 which may, if desired, be clamped against the jig plate 57 by any suitable clamping device holding the parts rigidly in desired position so that the drill 66 may be accurately guided by the hole 58 in'the jig plate and thus form the steady pin hole 8 in the desired part of the train bridge. The hole 9 in this bridge member is indicated as already having been formed in alinement with the hole 59 in the jig plate. These steady pin holes in the dial plate and bridge members may be formed at any desired stage of the. manufacturing process before jeweling and when desired dial plate after it has been recessed in any desired machines in connection with the relatively large work holes, such as l7, 48, 49, which may be formed therein so as to properly locate the recesses, such as 25, 27, 50, for example. For some purposes, however, it is desirable to have the recessing of the dial plate done after the steady pin or locating holes have been formed therein and these steady pin holes may be used to locate or aline the dial plate in the machines in which this recessing is performed which has the advantage of insuring the exact positioning of these recesses" with reference to the jewel and other bearings and moving parts of the In some cases it is more desirable to simultaneously drill the corresponding locat-' ing steady pin holes in the dial plate and one or more of the bridge members cooperating therewith. This may be done in any suitable drilling devices in which the bearing supporting or frame members such as the dial plate and bridge members are maintained in the same relative position during the drilling as by clamping them 11 together, preferably in the same position in which they are finally assembled in the watch movement or other time piece. If desired, a jig drilling device may be used for this purpose of the character indicatedin 11 Fig. 3. The dial plate 1 may be mounted in the drill support 73 and flange 7 2 and one or more of the bridge members, such as the train bridge 3 may be secured in position against the dial plate as by clamping the same beneath the drill jig plate 77. As indicated this drill jig may have a depending positioning flange 75 in such position as to engage the edge of the bridge members which may be held in proper alinement therewith in any desired way as by positioning pins or members extending through or around the bridge members such as the positioning pin 76, for instance. 7 By turning or wedging the securing pins 54 around in theirbayonetslots 55 formed in the some what reduced securing flange. 74L connected tothe drill support, all ofthese members are tightly clamped-togetherso that the dial plateand bridge members are securely held in contact throughout their base planes. in the position in which they are finally assembledin the watchmovement. The locating steady. pin holes may thenbe simultaneously drilled inthe'onebnmore bridge members and-dial plate as is indicated-in the case of the hole 8. which is. shown as being formed inthe dial plate 1fby thedrill 66 after the corresponding hole 8 has been 1 drilled in the train bridge 3 in alinemcnt with the guide hole 58 iuthehardened drill jig plate 77. The ,coijperating-steady pin holes .9 9 are indicated ashavingbeen previously simultaneously drilled in alinement with the guide hole 59 inthe jigplate. I In this way if thediallplate. and. bridge mem-. bers are securely clampedduring the drilling operation there is no possibility that near the base plane of the watch the adjacent: parts of the corresponding locating steady pin holes in thefdialplate and bridge me1nhere will be out ofalinement, This is becauseany slight angularideflection of the drill or its lateral movement in a guide holeof the jig plate correspondingly affects the location and direction of the steady pin holes thus simultaneously"produced in the bridge member and in the dial plate be neath, so that by the use of suitable steady pins in these steady pin .holes the watch plates may be accurately reassembled in this same position: at anytime; In this way a somewhat greater accuracy can be secured in drilling or forming these locating steady pin holes so that-stillgreater accuracy is secured in locating and uprighting thebearings in the. watch or other time piece, and it is of course understood that in. order to secure these ad-vantages. it. is desirable to correspondingly number voridentify the si 'multaneously drilled dial plate and bridges the stock by a positively aline the dial plate on'the quill to which it maybe held by any suitable retainers or; holding dogs screwed or otherwise clamped to thequill. The quill alining" pins areof course so located in the quill in which any particular. jewel is set that this jewel is in the center of this as, indicated in "Fig. 4 the dial plate is so alined. or'centered with respect to the jewelingquill as to bring the center jewel or bearinginto the, axis of the-quill. This allows.

the hole for thiscenter jewel 21 to be opened out or counterbored in the usual way and the jewel inserted in the accurately counterbored portion of the hole and secured in position therein as by suitable tool such as 67, to form a retaining flange engaging the bevel of the jewel which is thus mounted in the dial side of this dial plate in proper relation, .to the rear side of the plate which forms the base planeiof the watch movement and is forcedIclosely against the accurate face of quill; 60. The corresponding this jeweling' center jewel 21 may as indicated in Fig. 5 be set in the train bridge?) on this j eweling quill, and

burnishing or. spinning overv same jewelmg quill 60, the alining. pins 68, 69 fitting within the steady pin or locating holes 8, 9 in the train. bridge and holding it in position in connection with any suitable retain ers or holding dogs, so that the center jewel 21 is located exactly on the axis of this jeweling quill. This jewel hole .may then beopened up and counterbored in the same way and the jewel inserted and secured in position by a, similar burnishing operation which insures the accurate location of these two center jewels in the dial plate and train bridge so that .they necessarily come into exact alinement and uprighted position when the parts are. assembled. by bringing the steady pinholes into alinement as indicated in Fig. 6, for instance. As thereinshown c the steady pins 32 which may have the reduced ends 33 are forced tightly into each of the steady pin or locating holes in the therefor so-that they-will be assembled and dial plate 1 so that their cylindrical portions used together. v J I I 7 It is advantageous to-so form or locate. the jewel or otheribearings in the watch plates that the correspondingbearings are exactly located with 'reference'to thesteady pin holesv controlling the assembly 'of the plates, and this may be conveniently effected by using a series'of jeweling quills having quill alining pins adapted to cooperate with in Fig. 7. These quill alining pins canthus pro ect somewhat beyond the base plane or rear face of the dial plate and engage the correspondingsteady pin holes 8, 9 in the train bridge 3, for example, to accurately aline it and its jewel bearings with respect to the'corresponding bearings in the dial plate.

1 By using relatively thin uniform thickness bridge members of this general character any bridge member, such as the train bridge 3, may be mounted on a jeweling quill by clamping one face against the accuratesupportingfaceofthe quill and this necessarily brings the. opposite face of the bridge member into-position parallel to the quill face so that :the axis of each jewel bearing properly uprighted or located perpendicular to the face of the bridge member which en gages the dial plate. Of course each of the other jewels in the train bridge, such as the jewel 51, may be similarly located and mounted on another jeweling quill which has its alining pins so located as to bring this jewel into the quill axis, andthejewel or other bearings may be located or formed in the other bridge members'and dial plate in similar ways. Instead of permanently mounting the jewels directly in the watch plates they may of course be located therein by counterboring the bridge members or other plates so that they accommodate the removable or other settings of the bearing jewels of any suitable character, such as the setting of the cap jewel or other bearing jewel 22 shown in Fig. 7 as secured to the plate by the securing screws indicated. Thus it is possible to drill and'accurately jewel the watch plates or locate the bearing jewels with respect thereto and at the same time insure the accuracy and uprighting of the jewel and other bearings therein by using as steady pin holes in assembling the watch plates the locating holes by which the jewel or other bearings were formed or located, so that the interchangeability of the watch plates produced is greatly promoted in this high grade of movements while at the same time their manufacture is correspondingly simplified.

This invention has been described inconnection with a number of illustrative parts, forms, arrangements, proportions, materials, machines, apparatus and orders of steps, to the details of which disclosure the invention is not of course to be limited, since what is claimed as new and what is desired to be secured by Letters Patent is set forth in the appended claims.

1. The process of forming and jeweling watch plates which comprises forming a corresponding series of steady pin locating holes in the dial plate and in the thin substantially uniform thickness bridge members by boring such steady pin holes through the same drill jig plate which is secured in alinement with the rear side of the dial plate against which the bridge members are secured in the watch movement, recessing the dial plate and bridge members and jeweling them on a series of jeweling quills, each of which is formed with quill alining pins 00- operating with the steady pin holes in one of said bridge members to center with respect to said jeweling quill one of the bearings in said bridge member and counterboring and setting the jewel in said bearing,

' and mounting the dial plate on said jeweling quill and clamping the rear face of said dial plate against the face of said quill and inserting said quill alining pins in the corresponding steady pin holes in said dial plate to center with respect to said jeweling quill the corresponding bearlng in said dial late and counterboring and setting the ewel in said bearing to insure the accuracy and uprighting of the bearings in the said watch plates which comprises forming acorresponding series of steady pin locating holes in the dial plate and in the thin substantially uniform thickness bridge members, recessing the dial plate and bridge members and jeweling them on a series of jeweling quills, each" of which is formed with quill alining pins cooperating with the steady pin holes in one of said bridge mem- 1 bers to center with respect to said jeweling quill one of the bearings in said bridge member and counterboring and setting the jewel in said bearing, and mounting the dial plate on said jeweling quill and inserting said quill alining pins in the corresponding steady pin holes in said dial plate to center i with respect to said j eweling quill the corresponding bearing in said dial plate and counterboring and setting the jewel in said bearing to insure the accuracy and uprighting of the bearings inthe said watch plates when they are assembled and held in alinement by steady pins engaging the corresponding steady pin locating holes in said bridge members and dial plate.

8. The process of forming and jeweling watch plates which comprises forming a cor responding series of steady pin locating holes in the relatively thick dial plate and in the thin substantially uniform thickness bridge members by boring such steady pin holes in said dialplate from the rear side of the dial plate against which the bridge members are secured in the watch movement, and

the jewels in said hearings to insure the ac curacy and uprighting of the bearings .in the jeweling the dial plate and bridge members said watch plates when they are assembled and held in alinement by steady pins en gaging the corresponding steady pin locating holes in said bridge members and dial plate. i

4. The process of forming and jeweling watch plates which comprises forming a corresponding series of steady pin locating.

holes in the relatively thick dial plate and in the thin substantially uniform thickness bridge members and jeweling the dial plate and bridge members one series of jeweling quills, which comprise similarly located quill alining pins cooperating with the correand setting the jewels in insure the accuracy and sponding steady pinholes in one of said bridge members and in said dial pl ate'to center the corresponding bearings thereof uprighting of the hearings in the said watch plates when they are assembled and held in alinement by the corresponding steady "pin locating holes in said bridge members and dial plate.

5. The process of forming and jeweling watch plates which comprises forming a corresponding series of steady members and jeweling the dial plate and bridge members on a' series of jeweling quills, which comprisesimilarly-located quill allning pins cooperating with the.cor responding steady pin holes in one of said bridge members and in said dial plate to center the corresponding bearings thereof andlocating thejewelsin said bearings to insure the accuracy and uprighting ofthe bearings in the said watch plateswhen they are assembled and held in alinementbythe corresponding steady pin locating holes in saidbridge members and dial plate.

6. The process of forming and jewehng watch plates which "comprises forming a corresponding series of steady, pin locating holes in the dial plate and in, the bridge members and jeweling the dial plate and bridge members on a series of jeweling quills, each of whichis formed withqulll alining pins cooperating with the steady pin holes in'one of said bridge members to center with respect to said jeweling quill one of the hearings in said bridge member and counterboring and setting the jewel in said bearing, and mountingthe dial plate on said jeweling quill and clamping the rear face of said dial plate against the, face or said quill and inserting said quill alining P1118 in the corresponding steady pin holes ,in said dial plate to center with respect to said jeweling quill the corresponding bearing in said dial plate and counterboring and setting jewel in said bearing to insure the accuracy and uprighting of the bearings in the said watch plates'when they are assembled and held in alinement by the corresponding steady pin locating holes in said bridge Inembers and dial plate.

7. The process of forming and jeweling watch plates which comprises iforming a corresponding series of steady fpin' locating holes in the dial plate and in the bridge members and jeweling the dial plate and bridge members on "a series of jeweling quills, each of which is formed with quill alining pins cooperating with the steady pin holes in oneof said bridge membersto center with respect to said jeweli'ng quill one of the bearings in said bridge member and locatingithe jewel in said bearings, and mounting the dial plate on said said hearings to I pin locating holes in the dial plate and in the bridge asse blin watch plates holes in the; dial jeweling ui11 d l ping the rear face of said (dial plate against the face of I said quill and "inserting' said quill alining pins in the cor-- responding steady pin holes in saiddial plate to center with respect to said jeweling quill the corresponding bearing insaid dial plate and locating the jewel in said bearing to insure the accuracy and uprighting ofthe hearings in the said watch plates when they are assembled and held in ahnement by the corresponding steady pin locating holes in said bridge members and dial plate;

8 The process of forming, jeweling'and assembling watch plates which comprises forming a corresponding series of steady pin locating'holes inthe dial plate and in the cooperatin'g bridge members, using said holes in each of said bridge members as 10- eating holes to'mount the same on dial plate as dial plate on same jeweling quills to correlocating holes'to mount said each of the spondingly jewel said dial plate and assem- H bling said watch plates and. holding them in alinement by using said lo'cating holes as steady pin ;holes to insure the accurate. location and"uprighting of the bearing jewels.

"9. The process of forming is which "comprises forming a corresponding series of locating holes inthe dial plate and in the cooperating bridge "members, using saidholes in each jeweling qu lls to jewel said bridge member, using the corresponding holes in said ,jeweling and t a of said bridge members as locating holes to mount the same on jeweling quills 'tojewel said bridge member, using the corresponding holes in said dial plate as locating: holes tomount said dial plate oneach of the same j eweling quillsto correspondingly jewel said dial plate and assembling said watch plates and holding them in alin'ement byusing said locating'holes to insure the accurate location members as locating holes to said dial plate 11. The processor, forming, jeweling and assembling watch plates which comprises forming acomesponding series of steady pin locating holes in the dial plate and in the cooperating bridge members, using said holes in each ofsaid bridge members as lothe same on ewehng catingholes t mount quill 1150 locate the bearing jewels in said bridge member, using the corresponding holes in said dial plate as locating holes to mount said dial plate on the same jeweling quills to correspondingly locate. the corresponding bearing jewels in said dial plate.

and assembling saidwatch plates and alining them by using said locating holes as steady pin holes to insure the accurate location and uprighting of the bearing jewels.

12. The process of forming and assembling watch plates which comprisesforming a corresponding series of locatinglioles in the dial plate and in'the cooperating bridge members, using said holes in each of said bridge members as locating holes to mount the same on supports to locate the bearings in said bridge member, using the corresponding holes in said dial plate as locating holes to mount said dial plate on the samesupports to correspondingly locate the corresponding hearings in said dial plate and assembling said watch plates and alining them by using said locating holes to insure the accurate location and uprighting of the bear- T8. The process of formingand jeweling watch plates which comprises forming a corresponding series of locating holes in the dial plate and a in the cooperating bridge members, using said holes in each of said bridge members as locatingholes to mount the same on jeweling quills to locate the bearing jewels in said bridge member and using the corresponding holes in said dial plate as locating holes to mount said dial plate on the same jeweling quills to correspondingly locate the corresponding bearing jewels in said dial plate to insure the accurate location and uprighting ofthe bearing jewels.

14. The process of forming, jeweling and assembling watch plates which comprises forming a corresponding series "of steady pin locating holes in the dial plate and in a thin substantially uniform thickness cooperating bridge member, using said holes in said bridge member as locating holes .to mount the same on jeweling quills to jewel said bridge member, using the corresponding holes in said dial plate aslocating holes to mount said dial plate on jeweling quills, to correspondingly jewel said dial plate and assembling and alining said watch plates'by using said locating holes as steady pin holes to insure the accurate location and uprighting of the bearing jewels.

15. The process of forming and locating the bearings in the bearing supporting members of watches and other time pieces which comprises simultaneously forming a series of corresponding locating holes in said members, locating the corresponding bearings in said members from said locating holes in said members to insure the accuracy and uprighting of the corresponding .bearings in said members when they are assembled and held in alinement by the corresponding locating holes in said members.

16. The processot forming and jeweling the bearing supporting members of time pieces which comprises assembling said members in a jig drilling device and simultaneously V drilling a series of corresponding steady pin .locatingholesin saidmembers, j eweling said memberson a series of eweling quills formed with quill alining pins cooperating with'the steady pin holes in said members to center with respect to said ewelquill the bearings in the cooperatingmembers to insurethe accuracy and uprighting of the corresponding bearings in said members when they are assembled and held alinement by fsteady pins engaging the corresponding steady pin holes in said members. q

17. The process'of forming, jewelingand assemblin watch 5 plates which comprises temporari assembling said plates in a jig drilling vdeyice and simultaneously drilling a series of correspondingsteady pin locating holes in said plates, using said holes as locating holes to mount said plates on each of the same jeweling quills and jeweling said plates thereon and assembling said watch plates and holdingthemin alinement by using said locating holes as steady pin holes to insure the accurate location and uprighting of the bearing jewels. a

18. The process of forming, jeweling and assembling watch plates which comprises temporarily assembling said plates and simultaneously forming a series of corresponding steady pin locating holes in said plates, using said holes as locating holesto mount said plates on jeweling quills and jeweling said plates thereon and assembling sa d watch platesrandholdmg them in almemcnt by 1181119: said locating holes as steady pin holes to insure the accurate location and uprighting oi": the" bearing jewels. 19. The processot forming and assembling watch plates which comprises simultaneously forming a series of corresponding steady pin locatingholes in said plates, using said holes as locating holes to mount said plates on quills and locating the jewel or other bearings in said plates, and assembling said watch plates and holding them in alinement by usingsaid locating holesas steady pin holes to insure the accurate location and uprighting of the bearings.

20. The process of forming and assembling the bearing supporting plates of watches or other time pieces which comprises simultaneously forming a series of corresponding locating holes in said plates,

using said holes as locating holes to locate the jewel or other. bearings in said plates, and assemblin said plates and holdingthem in alinement by using said locating holes H0 insure the accurate of the bearings.

21. The process of forming, jeweling and assembling watch plates which comprises forming a corresponding series of locating holes in the dial plate and in a cooperating bridge member, using said holes in said bridge member as locating holes to mount the same on jeweling quills to locate the bearing jewels in said bridge member, using the corresponding holes in said dial plate as locating holes to mount said dial plate on jeweling quills to correspondingly locate the bearing jewels in said dial plate and assembling and alining said watch plates by using said locating holes to insure the accurate location and uprighting location and uprighting of the bearing jewels.

22. The process of forming and jeweling watch plates which comprises forming a corresponding series of locating holes in the dial plate, and a cooperating bridge member, using said holes in said bridge member as locating holes to mount the same on jeweling quills to jewel said bridge member and using the corresponding holes in said dial plate as locating holes to mount said dial plate on similar jeweling quills to correspondingly jewel said dial plate to promote the accurate location of the bearing jewels.

JOSEPH A. FREUN D.

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