US1373836A - Glass-grinding machine - Google Patents

Description

E. A. RYON.

GLASS GRINDING MACHINE.

APPLICATION FILED JUNE I9, I919.

Patented Apr. 5, 1921.

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APPLICATION FILED JUNE I9, I919. 1,373,836, nte Apr. 5, 1921 4 SHEETS-SHEET 2.

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E. A. RYON.

GLASS GRINDING MACHINE.

APPLICATION FlLE D JUNE 19: 1919.

Patented Apr. 5, 1921.

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' E. A. RYON.

GLASS GRINDING MACHINE;

APPLICATION FILED JUNE 19. 1919.

1,373,836. Patented Apr. 5, 1921.

4 SHEETS-SHEET 4.

EDWARD A. BYON, OF WELLSBORO, PENNSYLVANIA, ASSIGNOR TO FRED W, SIEMENS.

cuss-GRINDING inacnmn.

Specification of Letters Patent.

Patented-Apr. 5,

Application filed June 19', 1919. Serial No. 305,363.

To (2% whom it may concern Be it known that L Enwann A. RYoN, a citizen of the United States of America, and a resident of Wellsboro, Tioga county, and

State of Pennsylvania, have invented certain new and useful Improvements in Glass- Grinding Machines, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to the decorating of glass articles by cutting or grinding designs therein, and has special reference to automatic machines for completely decoratgearing for producing an oscillatory move-- ment of the spindle of the machine without preventing or retarding the forward and back motion of the spindle'in an axial direction.

Another object is to provide a simple and positive gearin for producing a rotative adjustment of t e work.

In order that my invention may be thoroughly understood I will now proceed to describe the same in the following specification, and then point out the novel features thereof in appended claims.

Referring to the drawings:

Figure 1 is a front elevation of a glass grinding machine arranged and constructed 1n accordance with my invention and constituting an embodiment thereof.

A partial plan view of the grinding wheel and the stops which determine the depth of the grinding cut is shown in Fig. 2.

Figs. 3, at and 5 are transverse sectional elevations taken respectively on the lines as, H and 5-5 of Fig.1.

Figs. 6 and 7 are detail views of the stop mechanism.

F ig.- 8 is a rear elevation of the machine.

Fig. 9 is a sectional elevation, taken on the line 99 of Fig. 1.

Fig. 10 is a partial elevation corresponding to Fig. 8, with certain of the parts removed to disclose the adjustable stops.

Fig. 11 is a sectional plan view, taken on the line 1111 of Fig; 8.

Fig. 12 is a sectional elevation showing the clutch pulley in detail.

Fig. 13 is an'elevation of the clutch pulleyB at right angles to Fig. 12.

ig. 14 is a sectional view taken on the line 1414 of Fig. 12.

Fig. 15 is a detail view showing a connection between the gear segment shown in 8, and its support.

Fig. 16 is a sectional elevation of the work holder drawn to a larger scale.

gig. 17 is a plan view of the work holder, an

Figs. 18 and 19 are sectional plan views taken on the lines 18'18 and 1919 of Fig. 16.

F ram and cutting wheel.

The machine as illustrated comprises a base 20, a wheel bracket 21, a cutting or grinding wheel 22 supported thereon, and a head stock or U-shaped bracket 23;

The cutting wheel is shown and described in my copen-ding application Serial No. 305,362 and filed of even date herewith, and in itself forms no part of my present invention.

Spindle.

A spindle 24 is rotatively and slidably supported by the sections of the U-shaped bracket 23 which constitute bearings, and a work holder 25 is secured to the spindle at one end. For convenience, the arms of the U-shaped bracket 23 may be designated 23 and 23 and between these arms on the spindle 2e are a pair of spaced collars 26 and 27. Slidably mounted on the spindle adjacent to the collar 27 is a ring 28 provided with an annular groove 29. A helical spring 30 surrounds the spindle between the collar 26 and the ring 28 and tends to hold the latter against the cellar 27.

As hereinafter explained "the spindle is actuated longitudinally by a lever which acts upon the ring 28, the spring 30 being 4 adapted to yieldingly hold the work in contact with the cutting wheel when the spindle i advanced.

Rotatively mounted on the spindle is a gear wheel 31 which is adapted to actuate the feed mechanism for the work and meshes with a gear wheel 32 on the driving shaft- 33 of the machine.

As clearly shown in.Fig. 11 there is a stationary disk 18 secured to the arm 23 of the bracket 23 and has a pair of outa stationary stud 53 to wardly extending pins or stops 19 which are screwed into tapered" nuts 34, the nuts being.

mounted to slide in a circularly curved groove 35 of a dove-tailed section. The arrangement of parts is such that the stops may be fixed in the groove 35 by tightening the screws 19 in the nuts 34 after the stops and the nuts have been adjusted to the desired positions. Adjacent to the stationary disk 18 is a collar 36 having a flange 37 and an outwardly. extending radial pin 38. This collar is afixed to the spindle 24 and the pin 38 extends between the stops 19 so that the latter positively limit the permisof-the oscillatory movement of the spindle. Adjacent to the flange 37 of the collar 36 is a gear wheel 39 which is pressed firmly against the collar 36 by a spring 40, the arrangement ofpartsbeing such that a friction clutch connection is established between the gear wheel and the spindle.

Dm'm"ng shaft.

sible extent 33 has a clutch pulley cam 42 having an annular groove 43. The driving shaft is substantially parallel to the s indle 24 and thegear wheel 32 is secure to it beyond the arm 23 The ear wheel 44 is secured to the driving sha at its opposite end beyond the arm'23 The ar wheel meshes with a double gear- 45 swing a smaller section 46 which meshes with a ear-wheel 47. This gear wheel is attached to a crank :disk 48 and is rotatively mounted on the end of the driving shaft,

the gearing 44, 45, 46 and 47 constituting a speed reducing gearing from the driving shaft to the crank disk. A crank pin 49 is mounted on the disk and from it and is preferably provided with a sleeve or roller 50. It extends through a slot 51 in a gear segment 52 which meshes with the gear wheel 39 and is mounted upon which by a universal joint connection 54.

.Actuating lever.

Pivotally mounted on the bracket 23 by means of a pin 55 is an actuating lever 56 which is clearly shown in Fig. 5 and is provided with two sides which are connected by webs 57 and.58. The upper ends of the sldes of the lever extend on opposite sides of the ring 28 and have inwardly extending lugs or projections 59' which coiiperate with the annular groove 29 of the ri g. A spring 60 tends to retract the spindle 24 but is adapted to be actuated by the lever 56 since the web 57 has a downwardly extending lug 61 which engages the groove 43, the groove being formed to produce this result.

The connection between the gear segment 52-and the stud 53 on which it is mounted,

extends outwardly it is connected.

' 79 which is formed to may be 'efi'ected in any suitable manner, as, fonexample, see Fi 15.. As here shown a sleeve 62 is mounte on the stud 53 and extends through a slot 63 in the hub 64 of the segment, -a air of screws 65 extending through the liub 64 and into the sleeves 62 forming a pivotal axis for the segment at right angles to the axis of the stud. Y

Stop mechanism.

A stop rod 66 is mounted to slide through which the rod is provided (see Fig. 7).

The rod is pressed upwardly by a s ring 70 'so that the notch tends to engage t e latch plate, the arrangement of. parts being such that when the plate is forced out of the notch 69 and the rod is released so that it is free to move longitudinally in response to a s ring 71,

rod 66 is turned the latch'j which acts upon the collar 72. T e rod 66- is further provided with an enlargement 73 which, when the stop rod. is released, is in position to release the clutch pulle 41 by engaging the clutch key 74. A handle lever 75 is secured to the rod in order to permit it to be readily reset or turned so as to be released manually if desired. The rod extends materially beyond the arm 23 of the U-shaped bracket and has a lateral arm or finger 76 which is adjustably attached to it by a set screw 77 and is ada ted to be tripped as hereinafter ex laine when the work has advanced throug a complete revolution. I Work holder.

inclusive,

outer end of the spindle 24 and has an arm provide apair of s aced bearings 80.481 s aft 82. The shaft 82 is substantially at right an Ice to the'faxis of the spindle 24 and is driven by a shaft 85. worm wheel 83 is secured to the shaft 82 between the bearings 80 and 81 and meshes with a worm- 84 which is secured to the actuating shaft 85. The shaft 85 is supported in bearings 86 and 87 on the bracket 79 and at its opposite end is provided with a pinion '89 which meshes with a gear wheel 90.

'The gear wheel 90 is rotatively'supported on a stud 91 on the bracket 78 and it has a plurality of outwardly extending pins or projections 92 which are adapted to be actuated by a pin projection 93 which extendsv radially from the hub of the gear wheel 31.

.for a work holder ing ring. The arrangement of parts is such -This isthe gear wheel which, as already explained, is rotativel mounted on the spindle 24 and is driven y a gear wheel 32 on the driving shaft 33.

The arrangement of parts is such that as the driving shaft is actuated the gear wheel v 31 is driven andthe pin 93 engages the pin 92, producing a step by step rotative movement of the gear 90 which is transmitted through the gear 89, the shaft85, and the worm gears 83 arid 84 to the shaft 82. The shaft 82 thus receives a series of rotative adjustments. Y

Fixed to the shaft 82 is a plug 94 over which a glass article such as a tumbler 95 is adapted to be fitted. -The rim of the tumbler is held by any suitable clamping means such as, for'example, the chuck 96. This chuck or clamp comprises a block 97 having radial slots 98 in which clamping jaws 99'are disposed. The block has the general form of a circular disk and is peripherally screw-threaded as indicated at 100 to cooperate with an internally threade clamping ring 101. The block 97 has an annular notch 102 and the clamping jaws 99 have the form of ring segments except for the radial lugs 103 which extend into the notches 98. The segmental jaws have conical surfaces 104 to cooperate with correspondingly curved surfaces 105 of the clampthat when a tumbler is mounted on the block 94 its rim may extend into the .cylindrical opening provided by the jaw segments. By turning the internally threaded ring the jaws are forced inward on account of the wedging action of the cooperating surfaces 104 and 105 and'securely clamp the tumbler in position. After the tumbler is mounted in place a pivoted arm 106 is swung outwardly from the bracket 78 and a clamping screw 107 tightens a pressure block 108 against the bottom of'the tumbler as shown in Figs. 1 and 16.

Operation.

Assuming that the parts occupy the positions shown in Fig. 1, the stop rod being set in opposition to the spring 71, if power is exerted to drive the clutch pulley 41 the driving shaft 33 will be turned, the first result being a turning of the gears 32 and 31 so as to effect an adjustment through the pins 93 and 92 and the gears 90, 89, 84 and 83, of the shaft 82 and the work which is mounted thereon. Y

The tumbler now occupies .a position in which a blank space is opposite the cutting wheel. Furthermore, the rotation of the driving wheel produces an oscillation of the gear segment 52, by means of the gears 44, 45, 46 and 47, and the crank disk 48. This oscillatorymovement of the gear segment made in the glass and the further advance of the driving shaft 33 now effects an actuation ofthe lever 56, producing a forward and back movementof the spindle 24. Thus the tumbler is moved into-engagement with the cutting wheel, the depth of the out be in'g determined by fixed stops 109 which are ad 'iacent to the cutting edge of the wheel.

he spindle is next retracted by the action of the cam 42 and lever 56, the continued oscillatory movement of the gear segment 52 being permitted by reason of the slipping ,of the clutch gear 39 until the segment 52 reaches the end of the stroke of the crank. When the crank passes over center and the segment begins tooscillate in the opposite direction, the spindle is of. course turned so that the pin 38 moves back into engagement with the other stop 19 and the work is again moved into engagement with the cutting wheel. I

The design of the'cam 42 and the arrangement of the gears which form an operative connection between the driving shaft and the gear segment 52, are so arranged that the spindle is advanced and retracted, that is, axially reciprocated twice for each revolution of the driving shaft and after two cuts have been made, as above explained, the

pin 93 advances the glass rotatively about be materially changed in appearance and 4 I rearranged by making slight changes in the permitted range of oscillation of the shafton the spindle; and also by changing the length of the pin 93, and the number of pins 92. The stop rod 66 and the stop mechanism connected thereto. continues in the positions in which' they are shown in Fig. 1 until the work holder shaft 82 has progressed through a complete revolution. There is a radial finger 110 ailixed to the shaft 82 at one end which is adapted to engage the fin er 7 6 on the stop rod 66 and to rotate it t rough a suflicient angle to release it from its latch 68. The rod when released, moves axially dle lever 75. Thus the machine is automatieach cally brought to a stop when the work is turned through an entire revolution and the series of decorative cuts completed.

Various structural modifications ma be effected within the spirit and scope of my invention, and I intend that only such limitations be imposed as are indicated in the appended claims.

What I claim is:

1. A glass grinding machine comprisinga work holder, means for producing an oscillatory adjustment of the work holder, means for reciprocating the work holder between oscillatory adjustment thereof, means for rotatively adjusting the work about an axis at right angles to the axis of oscillation,

and means for reciprocating the spindle.

I rocatory and an oscillatory movement to the.

spindle.

work holder,

2. A glass grinding machine comprising a cutter, a spindle extending longitudinallyin the plane of the cutter, a work holder secured to the spindle and having a work clamp rotatively mounted thereon at right angles to the axis of the spindle, and means for actuating the spindle and rotatively adjusting the work about the axis of the clamp.

3. A glass grinding machine comprising a cutter, a spindle extending longitudinally in the plane of the cutter, a work holder secured tothe spindle and having a work clamp rotatively mounted thereon at right angles to the axis of the spindle, means for actuating the spindle and rotatively adjust-' ing the work about the axis of the means for axially adjusting the carry the work toward and from the cutter.

4. A glass grinding machine comprising a spindle, means for limiting the rotative movement of the spindle, means for oscillating the spindle between the said limiting means, a work holder attached to the spindle, and means for axially adjusting the clamp, and spindle to 5. A glass rinding machine comprising a cutting wheefi a spindle, means for limiting the rotative movement of the spindle, means for oscillating the spindle between the said limiting means, a work the spindle, and means for axially adjusting the spindle to move the work toward and from the cutting wheel between each oscillation of the spindle.

6. A glass grinding machine comprising a adjustable means for limiting the oscillatory movement of the work holder to a predetermined an Is, a driving shaft, and means for alternate y imparting a recipwork holder.

7. A glass grinding machine comprising a spindle, a palr of ad ustable stops for limiting the rotative movement thereof, means for imparting an oscillatory movement to the spindle between the aforesaid limits, and means for reciprocating the'spindle without interfering with the oscillating means.

holder attached to 8. A lass grinding machine comprising a spindle aving a radial projection, a pair of adjustably fixed stops in the path of movement of the radial finger for limiting the rotative movement of the spindle, a'clutch gear for driving the spindle between said limits, a gear segment meshing with the clutch gear, and a driving crank for oscillating the segment to pro uce an oscillatory movement of the spindle between the determined limits.

9. A glass grinding machine comprising a spindle having a radial projection, a pair of adjustably'fixed stops in the path of movement of the radial finger for limiting the rotative movement of the spindle, a clutch gear for driving the spindle between said limits, a gear segment meshing with the clutch gear, a driving crank for oscillating the segment to produce an oscillatory movement of the spindle between the determined limits, and means for reciprocating the spindle. v

10. A glass grinding machine comprising a spindle, a work holder afiixed thereto, a radial projectiontherefrom, a pair of stationary adjustable stops for limiting the rotative movement of the spindle, a clutch gear for moving the spindle between the stops, a driving shaft, an oscillating segment meshing with the clutch a crank connected to the oscillating segment, and interposed gearing between the crank and the driving shaft, whereby a rotative movement of the driving shaft produces an oscillatory movement of the spindle.

11. A glass grinding machine comprising a spindle, a work holder affixed thereto, a radial projection therefrom, a pair of stationary adjustable stops-for limiting the rotative movement of the spindle, a clutch gear for moving the spindle between the stops, a driving shaft, an oscillating segment meshing with the crank connected to the oscillating segment, interposed gearing between the crank and the driving shaft, and means dependent upon the driving shaft for producing a reciprocatory movement of the spindle.

12. A lass grinding machine comprising a spin le, a work holder afiixed thereto, a radial projection therefrom, a pair of stationary adjustable stops for 'limiting the rotative movement of the spindle, a clutch gear for moving the spindle between the stops, a driving shaft, an oscillating segment meshing with the clutch gear on the' spindle, a crank connected to the oscillating segment, interposed gearing between the crank and the driving shaft, means dependent upon the driving shaft for producing a reciprocatory movement of the spindle, a work holder shaft on which the work is mounted, a gear rotatively mounted on the work holder and operatively connected to gear ofthe spindle,

the shaft, a gear spindle and geared to the driving shaft, and means on the spindle gear for actuating the work holder gear in a series of steps.

13. A glass grinding machine comprising a cutter, a work carrying spindle, a driving shaft substantially parallel thereto, a work holder mounted on the spindle and rotatively adjustable substantially at a right angle thereto and driving gearing from thedriving shaft for reciprocating the spindle to carry the work toward and away from the cutter, for rotatively adjusting the spinfileidand for rotatively adjusting the work 14. A glass grinding machine comprisrotatively mounted on they ing a cutter, a work carrying spindle, a driving shaft substantially parallel thereto, a work holder mounted on the spindle and rotatively adjustable substantially at a right angle thereto, cam mechanism on the driving shaft for reciprocating the spindle to carry the work toward and away from the cutter, speed reducing gearing from the driving shaft for oscillating the spindle and intermittent gearing from the drivin shaft for rotatively adjusting the wor holder.

In witness whereof, I have hereunto set my hand this thirteenth day of June, 1919. 30

EDWARD A. RYON.

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