US485410A - Machine for truing jewel settings - Google Patents

Description

(No Model.) 5 sheets-sheet 1.

T. GILL.y MACHINE FOR TRUING JEWEL SETTINGS.

No. 485,410. Patented Nov. l, 1892.'

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T. GILL. MACHINE FOR TRUING JEWEL SETTINGS. NQ. 435,410. Patented NW1, 1892.

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(No Model.)

T. GILL. MACHINE FOR TRUING JEWEL SETTINGS.

No. 485,410. Patented N0v .r1,i1 892.

(No Model.) l 5 sheets-sheet 4.

MACHINE EOEv TRUING JEWEL SETTINGS.

No. 485,410. ,Patented Novfl, 1892.

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T; G1111; MACHINE EIOR TRUING JEWELXSETTINGS. NQ. 485,410. l v Patented Nov. 1, 1892.

WlTJ 1:55.25 l /X/ 55%@ W i J7 UNITED STATES PATENT OFFICE.

THOMAS GILL, OF WALTHAM, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO 4 JOHN STARK, OF SAME PLACE.

MACHINE FOR TRUING JEWEL-SETTINGS.

SPECIFICATION forming part of. Letters Patent No. 485,410, dated November 1, 1892.

Application led March 28, 189.2. Serial No. 426,742. (No model.) l

To a/ZZ whom it may concern:

Be it known that I, THOMAS GILL, of Waltham, inthe county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Truing Jewel-Settings, of which the following is a specification. This invention has for its object to provide a machine adapted toturn the periphery of ro a watch-jewel setting in such manner as to make said periphery absolutely true and concentric with the arbor-receiving orifice formed in the jewel.

In preparingjewels for application to watch and clock movements the jewel, which has been previously drilled to receive the arbor, is inserted in a metal setting of cylindrical form, said setting being suitably compressed or upset at its ends to engage it with the jewel. zo Heretofore much difficulty has been experienoed in locating the orifice in the jewel at the exact center of the peripheryof the setting, or, in other words, providing the jewel with asetting the periphery of which is abso- 2 5 lutely concentric with theoriiice in the jewel. My invention consists in the improvements hereinafter described, whereby the jewel and its setting are centered by the orifice in the jewel preparatory to the operation of turning 3o off the periphery of the setting, so that said periphery will be formed concentric with said orifice, as I will now proceed to describe.

In the accompanying drawings, forming part of this specilication,Figure l represents 3 5 a front elevation of a machine embodying my invent-ion. Fig. 2 represents a top view of the same. Fig. 3 represents a section on line 3 3, Fig. 2. Figs. 3fL and 3b represent enlarged sectional views. Fig. 4 represents an end view 4o of the machine. Figs. 5.and 6 represent end views of a jewel and its setting, on an enlarged scale, Fig. 5 showing the setting with its periphery eccentric to the orifice in the jewel, while Fig. 6 shows the setting after it has been trued Vbythe action of myimproved machine. Fig. 7 represents a section on line 7 7, Fig. 3, looking toward the right. Fig. 8 represents a perspective view showing the chucks or centers which engage the jewel and setting, said 5o chucks being shown as separated and a jewel and setting interposed between them. Fig. 9

same parts in all the figures.

represents a perspective view of the parts shown in' Fig. 8, showing the setting grasped by the centers and ready for the turning or truing operation.

' The same letters of reference indicate the In the drawings, a represents the supporti ing frame or base, towhich is affixed a frame b, having bearings b b,in which is journaled 6o a spindle c, said spindle being adapted to both rot-ate and move lengthwise in said bearings.

d represents another spindle, which is located in a line with the spindle 'c and is journaled in bearings c e on a frame'e, which is 65 affixed to the bed a. The spindles c and cl are both positively rotated inthe same direction by means of gears f g, affixed to a shaft h, and pinions f g', affixed, respectively, to the spindles c and cl and meshing, respect- 7o ively, with the gears f and g. The spindle c is movable endwise toward and from the spindle d, its endwise movement being effected by means of a cam t', affixed to a shaftj, a lever t", pivoted at 2 to an ear affixed to the 75 frame b, said lever being engaged at its upper end with the spindle c and provided at its lower end with a trundle-roll is, bearing against one side of the cam t', and a springt, connected at one endwith lever t" and at 8o its opposite end with an adjusting-screw i5, engaged Ywith the supporting-bed a. The cam 1l is formed to give the spindle c a movement through the levert" in the direction indicated y by the arrow in Fig. 3, thus moving the spindle c away from the spindle CZ. When the projecting part of the cam t' recedes from the roll 3, the spring 4 moves the lever t" and spindle c to the position shown in Fig. 3, thus causing the spindle c to co-operate with the 9o spindle d in grasping a jewel-setting.

To prevent the spindle c from rotating when it is withdrawn or moved backwardly, I make the gear f, that communicates motion from the shaft h to said spindle, normally loose upon said shaft and provide a clutch member]c2 on the hub of the gear f, a sliding clutch member f3, which is engaged with the shaft h by means of akey or feather, so that it necessarily rotates with the shaft and is free to i: slide thereon, a lever f4, pivoted at f5 to aiixed support, one end of said lever being bifurcated and engaged with a groove in the sliding clutch member, a cam f6, afixed to the shaftj, said cam bearing against a trundleroll f7 on the leverf, and a spring f8, Fig. 2, arranged to normally engage the sliding clutch member f3 with the clutch member f2. The cam f is timed so that when the spindle c is moved outwardly said cam will act on the 1ever f in such manner as to separate the sliding clutch member f5 from the memberfz, so that the rotary movement of the spindle c will cease. lVhen the spindle e moves back to its operative position, the cam f G releases the le- Verf4 and permits the spring f8 to connect the clutch members f3 f2.

m represents a rod which is movable lengthwise within the spindle d, the latter being hollow, as shown in Fig. 3, and is provided at one end with a centering-pin m', which projects through an orifice in the end of the spindle d and is made conical at its outer end, which is reduced to a fine point in order that it may enter the orifice 7a2 in the jewel 7e', inclosed by the setting k. (See Figs. 5 and 6.) The rod m is pressed lengthwise, so as to normally project the centering-pin m' from the end of the spindle d by means of a spring m2, Fig. 3. The extent to which the outerend of the centering-pin projects from the end of the spindle cl may be determined by means of an adjusting nut m3, engaged with a threaded portion of the exterior of the spindle d and a pin m4, which passes through the rod m and through slots 'm5, Fig. l, in the spindle d, said pin bearing upon one side of the nut m3, as shown in Figs. l and 2,and being held in contact with said nut by the spring m2. By turning said nut in one direction or the other the een tering-pin may be caused to project more or less, as will be readily seen. The pointed end of the pin m is adapted to enter the orifice in the jewel, which, with its setting, is interposed between the spindles c d, as hereinafter described, and thus center the jewel or locate it so that its orifice will be exactly in the axial line of the spindles c d, the centering-pin being supported laterally by the spindle (l by the closeness of its fit in the orifice of said spindle, so that its pointed end in entering the orifice in the jewel is capable of giving the jewel and its setting the slight lateral movement that may be required to bring the orifice of the jewel into exact coincidence with the axial line of the spindles c d.

0 represents a chute for the reception of a number of jewel-containingsettings k. Said chute is formed as indicated in Figs. l, 7,8, and D and provided at its lower end with a trough o', which is open at its sides and is adapted to contain the lowest setting in the column or procession in the chute, the latter being inclined, so that the settings will enter the trough o by gravitation. The chute o is oscillated by mechanism presently described, so that the trough o' will alternately stand between the spindles c d, as shown in Fig. S,

and below said spindles, as shown in Figs. 7 and 9, the chute being elevated to the position shown in Fig. 8 when the spindle c is withdrawn, and depressed to the position shown in Figs. 7 and 9 after the spindle c is moved forward to its operative position. It will be seen that the trough b is formed t0 permit the spindle c in moving forward toits operative position to move the j ewel-setting 7i; in said trough laterally into contact with the end of the spindle CZ and the centering-pin m', projecting therefrom, as shown in Fig. 9. After this operation the chute 0 swings downwardly and the column of settings is moved by gravitation, so that the next setting in the chute falls into the trough 0', and is there arrested until the chute again assumes the position shown in Fig. S.

The mechanism for oscillating the chute o, as here shown, is as follows: The chute is pivoted at 02 to a fixed standard on the supporting-frame. 03, Fig. 7, represents a lever which is pivoted at o4 to a fixed support and is connected at its upper end with the chute by a link o5. The lower portion of the lever 03 is held by a spring oG in contact with a cam 07, affixed to the shaftj. Said cam is so formed and timed that it moves the lever 03 to the p0- sition shown in dotted lilies in Fig. 7, and thus raises the lower end of the chute when the spindle c is withdrawn, and then permits the spring o(i to restore the lever to the position shown in full lines, thus depressing the chute after the setting has been engaged with the spindles and centering-point. Then a jewelsetting is grasped and rotated by the spindles c d, its periphery is turned olf and made concentric with the orifice in the jewel by means of a cutter p, supported by a slide p', which is movable lengthwise of the spindles c d on the bed a, so that the cutter commences to act at one edge or side of the setting and moves along the periphery thereof to the opposite edge or side in a direction parallel with the axis of the setting. The cutter p is attached directly to a lever p2, which is pivoted at p3 to an ear on a slide p4. Said slide is adapted to move lengthwise of the spindles c d on another slidep5, which is adapted to move cross wise of said spindles on the slidep. The 0bject of the slides 114195 is simply to permit the cutter to be adjusted both toward and from the axis of the work and parallel therewith. The slidep is moved to carry the cutter along the work, as above described, by means of a cam p3 on a disk or body p7, aihxed to the shaftj, said cam acting on a roll p on a stud p10,aiixed to the slide p. A spring p12, attached at one end to a stud on the slide p and at the other end to a fixed support, gives the slide p and cutter p their return movement when the cam p8 retreats. The object of the pivoted lever or arm p2, which directly supports eutterp, is to enable said cutter to be raised during its return movement. This result is accomplished by means of a cam p13, Fig. 7, on the disk p7, and a stud p, affixed IOC IIC

to raise the lever p2 and cutter p while the.

slide p is being moved by the spring p12.

The machine may be driven by a belt running from a driving-shaft on a pulley r on the l shaft h and suitable connections between the shafts h and j, said connections comprisinga bevel-gear s on shaft h, a shaft s', having a bevel-gear s2, meshing with s, a worm s3, affixed to shaft s', and a worm-gear s4, affixed to shaft j and meshing with said worin. y

The operation is as follows: The spindle c being retracted, the chute ois raised, as in Fig. 8, thus interposing a setting and its contained jewl between the two spindles. -The spindle c is then advanced, as shown in Fig. 9, and thus caused to move the setting into Contact with the spindle d and engage the. orifice of the jewel with the centering-pin, so f cutter p is raised and returned to its startingpoint, the spindle c being at the same time withdrawn and releasing the completed setting. This completes one cycle of movement, which is repeated with every jewel-setting.

I do not limit myself to the details of mechanism here shown, and may vary the same in many particulars without departing from the spirit of my invention, an essential feature of which is a device to insure the coincidence of the orifice in the jewel with the axis or center of rotation of the device which rotates Vthe jewel and setting and presents the periphery of the setting to a cutter.

Figs. 3, 3, and 3b show the spindle c, provided with a self-adjusting or rocking tip om, which bears against one side of the jewelsetting and is adapted to rock or tip to a sufficient extent to conform to any variation in the thickness of the setting. It sometimes happens that the sides of a jewel-setting are not exactly parallel, so that the setting would be thicker at one part than at another. It is therefore important to have the bearingsurface of one of the spindles self-adjusting, so that a iirm bearing of both spindles on the opposite sides of the setting maybe insured. To this end I reduce the body of the spindle, as shown in Figs. 3 and 3a, and give the reduced portion a tapering form. On the reduced portion I place the tip 01, which has an internal cavity adapted to receive the said reduced portion, said cavity having agreater taper than the reduced portion, so that the tip can rock or oscillate, and thus enable its outer end to occupy various inclinations. The tip 010 is normally held with its outer end in a vertical position lby means of springs cl2, interposed between the rear end of the tip and the reduced portion of the spindle, said springs being supported byrods 013, the .inner ends of whichbear upon the reduced portion of the spindle, while their outer ends are free to play in orifices formed inthe tip.

I claim- 1. In a machine for truing jewel-settings, the combination, with two jewel grasping and rotating spindles in line with each other, of

a centering device supported by one of said spindles and adapted to engagethe orifice of a jewel and cause the same to coincide with the axis of rotation of the said devices and a cutter to which the setting is presented by said devices, as set forth.

2.l In a machine for truing jewel-settings the combination of two spindles adapted to grasp between them and rotate a jewel-setting, a centering-pin supported by one of said spindles and adapted to engage the oritice of a jewel, the spindle supporting the centering-pin having no other projection outside the radial line of the end of the said pin, and a cutter arranged to act on a setting rotated by said spindles, as set forth.

3. In a machine for truing jewel-settings, the combination of a spindle,a centering-pin longitudinally movable in said spindle and yieldingly projected therefrom, another spindle arranged in a line with the first-mentioned spindle and adapted to co-operate therewith in grasping and rotating a jewel-setting and in engaging the orifice in the jewel with said centering-pin, and a cutter arranged to act on the rotating setting, as set forth.

4. In a machine for truing jewel-settings, the combination of a spindle, a centering-pin longitudinally movable in said spindle and yieldingly projected therefrom,- a longitudinally-movable spindle arranged to co-operate with the centering-pin in centering a jewel and its setting and with the other spindle'in grasping and rotating the centered setting, and a cutter to which the setting is presented by said spindles, as set forth.

5. In a machine for truing jewel-settings, the combination of a spindle,a centering-pin longitudinally movable in said spindle and yieldingly projected therefrom, a longitudinally-movable spindle arranged to co-operate with the centering-pin and with the other spindle, as described, a carrier, substantially as described, for presenting the'settings to said spindles, and a cutter to which the set- IOO IIO

tings are presented by the spindles, as set forth.

6. In a machine for truing jewel-settings, the combination of a hollow spindle, a springpressed centering-pin movable longitudinally in said spindle and located in the axial line thereof, another spindle movable longitudinally with its axis in line with the centeringpin, mechanism for rotating said spindles, a

pivoted chute adapted to contain a series of settings, a cutter arranged to aet on a setting rotated by said spindles, and operating devices, substantially as described, whereby the chute is oseiliated, the movable spindle is moved lengthwise toward and from the hoiiow spindle, and the cutter is moved along the work.

7. The combination, with the spindle hav ing the centering-pin, of the (zo-operating spindie having a rocking or self-adjusting tip adapted to conform to the inclined sides of a setting, said tip having a tapered cavity itting over the end of its spindle, and springs interposed between the sides of the spindle and the inside of the cavity.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 19th day of March, A. D. 1892.

THOMAS GILL.

Vitnesses:

JOHN STARK, C. F. BROWN,

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