US1799129A - Glass-mitering machine - Google Patents

Description

March 31, 1931. G. SIMONEL'ET AL v "1,799,129

GLASS MITERING MACHINE Filed April 2, 1925 3 Sheets-Sheet 1 INVENTOR5 G'egrgc z'manc! and VIZ/Hum H.J0/m.50n,

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ATTORNEYS March31 1931- a. SIMONEL ET AL 1,799,129

GLASS MITERING MACHINE Filed April 2, 1925 5 Sheets-Sheet 2 INVENTOR5 Gear 6 Jl'manel and 3f Mllldm H.Jahn50rl,

I WT MV A TTORNEYS March ,1 1- a. SIMONEL Ef AL 1,799,129

GLASS MITERING MACHINE Filed April 2, 1925 3 Sheets-Sheet 3 .97 J! INVENTORJ George Slaw/rel and WWI/am 11. Johns on,

giwa fm A TTORNEYJ Patented Mar. 31, 1931 ATES PATENT OFFICE enonan SIMONEL, or BLOOMINGTON, AND WILLIAM II/JOIINSON, or 'rrnrmn HAUTE,

INDIANA, ASSIGNORS 'ro THE NURRE MIRROR PL TE ooMPANY; or BLOOMINGT'ON,

INDIANA, A coRPoRA'rIo or INDIANA GLASS-MITERING MAcHINE 1 Application filed April 2,

vide a machine for grinding in the surface of plate glass irregular grooved lines, known in the commercial art as miters. I

Another object of our invention is to provide a machine in which irregular miters may be automatically produced, it being necessary only for the operator to place the glass to be mitered in position, adjust the various parts and then start the machine in operation, after which the complete mitering process will be automatically carried out. Other objects and advantages of the machine will .apear more fully in the accompanying specification and C1LlHIS-' Y I H For the purpos of disclosing our invention we have illustrated certain embodiments thereof in the accompanying drawings in which,

Fig. 1 is a plan view ing our invention A Fig. 2 is a side elevation thereof Fig. 3 is a plan view of the grinding wheel carriage; 1

Fig. 4 is a side elevation of the grinding Wheel carriage and its associated parts;

Fig. 5 is a detail end view thereof, and Fig. .6 is a plan view of a modification.

In the embodiment of the invention illustrated we provide a supporting frame'comprising abase 1 which is made comparatively heavy to maintain the parts-in a substantially rigid position and from this base there extend upwardly end posts 2 on; which at the top is mounted a crossbrace 3. Between the base 1 and the brace 3 there is also mounted a' supporting table 4 on which the various operating parts'are adapted to be mounted.

A templet support 5 is rotatably mounted on the table 4 and has a vertical shaft 6 which of a machine embody:

extends through the bearing collar 7 on the table and throughthe table 4 to project below the table. The lower end of this shaft is provided with aworm gear 8 driven from a worm 9 mounted on a horizontally disposed shaft 10 arranged in journals 11 on the under side of 1925. SerialNo. 20,121.

turn operated by a suitable gearing from a pulley 14 driven by a belt 15 from an operating motor 16 mounted on the top of the cross piece 3. A templet 17 having a peripheral configuration corresponding to the configuration of the desired-miter is supported on the plate 5 and is adaptedto be bolted or otherwise removably secured on the plate so that different forms of templets may be used.

The shaft 6 also has mounted thereon a lower clamping plate 18 between which and an upper clamping plate 19 the glass to be ground may be clamped. The upper c1amp-. ing plate is rotatably mounted on the end of a set screw 20 provided with a hand wheel 21 by which the plate may be moved intoclamping engagement with the glass. By this arrangement'it will be noted the. glass and with it the templet is adapted to be rotated in the direction of the arrow, (Figs; 1 and 6) being driven from the shaft 10. For initiallyrotating the shaft 6 for adjustment etc.,.the shaft lOmay be rotated by a hand wheel 22 adapted to make clutching engagement at 23 with the shaft.

The grinding wheel is mounted on the free end of a swinging arm 24 pivoted at 25 at one end of the table 4 and this arm at a point intermediate its ends is supported by rollers 26 operating on an arcuate track 27 formed at the outer end'ofa wedge shaped plate 28 bolted to the table 4. This arm is urged in a'direction toward the templet by a weight 29 at one end of a cable 30, which cable passes arm 24.

The free end of the arm is provided with a vertical journal 33 having a bushing 34 (see Fig. 4) held in position by a set screw 35, and operating in this bushing is a vertical spindle 36 the lower end of which rests upon a set screw 37 passing through a threaded plug 38; and the spindle is held against ver-' tical displacement by means of a set screw 39 having its inner end received in a groove 40 formed adjacent the lower end of said spindle 36. This spindle 36 carries at its upper end a radial horizontally disposed arm 41 which has bolted thereto the plate 42. This plate 42 is provided with a dovetail slot 43 in which is adapted to slide the correspondingly shaped slide plate 44 supporting the journal for the grinding wheel. The forward end of this plate 42 is provided on opposite sides with vertically disposed spindles mounting rollers 45 and 46 which are adapted to bear against the edge of the templet 17. The roller 45 is provided with a flange 47 arranged to take under the templet 17 and the roller 46 is provided with a flange 48 adapted to take over the edge of the temp let 1? whereby vibration of the edge of the templet is prevented. The forward end of the sliding plate 44 is also provided on its under side with a roller 49 adapted to engage the edge of the templet and the plate 44 is urged forwardly'to engage the roller 49 with the templet by a coiled spring 50 interposed between a nut 51 on the end of a rod 51a extending rearwardly from the plate 42 and a lip 52 on the sliding plate 44.

The sliding plate 44 carries an upwardly extending arm 53 which is inclined from the vertical and is provided at its upper end with a bearing 54 in which is mounted a shaft 55, which shaft has mounted thereon by means of suitable bearings 56 at the ends of laterally extending arms 57 the journal 58 in which is mounted the shaft 59 for the grinding wheel 60, which grinding wheel, as is apparent, is thushingedly supported above the plate to be mitered. The supporting means for the journal 58 permits of a vertical adjustment of the grinding wheel 60 to thereby adjust the depth of the cut thereof and this adjustment is obtained by an adjusting screw 61 having at its lower end a roller 62 adapted to bear on the top surface of the plate to be ground and provided with a knurled nut 63 engaging the under side of an arm 64 secured to the journal 58 and overhanging the plate. After the proper adjustment has been obtained by manipulating the knurled nut 63 the screw 61 may be locked against vertical displacement by the set screw 65. The plate to be ground is supported against the pressure of the grinding wheel 60 by means of a roller 66 mounted on a spindle 67 the journal 68 of which projects from the forward end of the sliding plate 44 and this roller 66 is positioned immediately beneath the grinding wheel 60.

The shaft 59 of the grinding wheel is driven by a flexible shaft 69 operated from a shaft mounted on the top of the cross memher 3 and having belt connection 70 with a suitable driving motor 71.

During the grinding operation a continuous flow of water is supplied to the grinding wheel from a nozzle 72 supported in proximity to the wheel and receiving water from any suitable source of supply.

- In operation the templet l7 is secured in position on the plate 5 so that this templet will rotate with the shaft 7. The clamping plate 18 is then placed in position, being secured on the shaft 7 and the glass plate to be ground is then mounted on the table with its edges coinciding with the edges of the plate 17. After the glass plate has been accurately positioned the upper clamping plate 19 is lowered thereon by the manipulation of the hand wheel 21 and the plate securely clamped by the clamping plates 18 and 19 so that when the shaft 7 is rotated the templet .and glass plate to be operated on will be r0- tated in unison. The arm 24 is then allowed to swing in so that the guide rollers 45 and 46 will bear against the edge of the templet, the arm being urged in such a direction as to cause this action by the weight 29. The uide roller 49 on the forward end of the sliding plate 44 is also urged into engagement with the edge of the templet under the influence of the coiled spring 50. This arrangement maintains the grinding wheel 60 in a definite relation to the edge of the templet. The depth of cut is then regulated by the adjustment of the adjusting screw 61; The machine is now ready for operation and by starting the shaft 7 to rotate operating the templet and glass plate in the direction of the arrow and at the same time driving the grinding wheel, a relative movement will be produced between the plate and the grinding wheel causing the wheel to grind it grooved line in the surface of the glass, the line being determined by the contour of the templet. The two mitering wheels 45 and 46 bear on the edge of the templet and are placed on opposite sides of the pivotal point of the carriage 42 so that the carriage will be swung on the pivotal point as the wheels follow the con tour of the templet. Due to the fact that there is a relative sliding movement between the plate 44 and the carriage plate 42, the guiding wheel will be maintained substantially tangentially to the line of out even when a swing is made on a sharp turn.

In Fig. 6 we have illustrated a modification of our invention wherein after the miter has been ground it may be suitably polished and to this end, at the opposite end of the machine from the grinding wheel 60, we provide a buffing wheel 7 3 which is supported and operated by a mechanism 74 similar to the mechanism for supporting and operating the grinding wheel 60. As the water'supplied to the grinding wheel tends to collect on the glass during the grinding operation and as this water would have a tendency to interfere with the proper operation of the burnishing wheel 7 3, we drain the water away from the grinding wheel and off the glass by slightly tilting the machine so that the end of the machine supporting the buffing wheel 73 will be slightly higher than the end at which the grinding wheel 60 is mounted. This will give a slight inclination to the plate to be mitered and drain the water on the glass away from the bufiing wheel 73.

It is obvious that any type of grinding wheel may be used in the apparatus described or, for that matter, any type of wheel, as for instance, a buiiing wheel may be substituted for the grinding wheel and where we have used in the claims the expression a grinding wheel it will be understood that this term is comprehensive enough to include other wheels than that described and shown.

.We claim:

1. In an apparatus for grooving plate glass the combination with a rotatable flat templet, of an arm swingable in a plane parallel with the plane of said templet, means for resiliently urging the free end of said arm to- Ward the edge ofsaid templet, a carriage swingably mounted on the end of said arm on an axis at right angles to the plane of said templet and having bearing points disposed on the opposite sides of said pivotal point bearing on the edge of said templet, a grinding wheel support slidably mounted on said carriage, having a right line movement relative to the edge of said templet and bearing upon the edge of said templet at a point between the bearing points of the carriage, means. for resiliently urging said support toward the edge of said templet, a grinding wheel rotatably mounted on said support in a position to engage the glass and means for positively driving said wheel.

2. In an apparatus for grooving plate glass the combination with a rotatably mounted flat templet, of an arm pivoted to swing in a plane substantially parallel with the plane of the templet, means for urging the free end of said arm toward the edge of the templet, a carriage swingably mounted on the free end of said arm and bearing upon the edge of the templet at spaced apart points, a support slidably mounted on said carriage and movable relatively to the edge of said templet with a right line movement and bearing upon the edge of the templet at a point intermediate the bearing points of the carriage, a grinding wheel shaft bearingmounted on said support, means for vertically a-djusting said bearing, a grinding wheel mounted on said shaft in a position to engage the glass plate and means for positively driving said shaft.

3. In an apparatus for grooving glass plate, the combination with a templet, of an oscillably-supported grinding wheel carriage, a pair of spaced anti-friction members mounted on said carriage, means for producing a relative movement between said carriage and said templet, means for resiliently urging said anti-friction members int-o contact with the edge of said temple-t, a support slidably mounted on said carriage and movable relative to the edge of said templet with a right line movement, means for resiliently urging said sliding support into guiding contact with the edge of said templet, a bearing mounted'on said support, a shaft journaled therein, means for'vertically adjusting said bearing, a grinding wheel mounted on said shaft in position to engage the glass plate, and means for positively driving said shaft;

4. In a machine for grooving glass plate, the combination with a templet, of a grinding wheel carriage, rotatable on an axis at right angles to said templet, means for causing a relative movement between said carriage and templet, means for resiliently biasing said carriage toward the edge of said templet, a pair of spaced apart guide rolls on said carriage engaging the edge of said templet, a'grinding wheel supportslidably mounted on said carriage and having a right line movement on said carriage to and from the edge of said templet, a guide roller on said support engaging the edge of the templet, resilient means independent of said first mentioned resilient means biasing said support towardsaid templet and holding said' guide roller thereof in engagement with the edge of thetemp'let, a grinding wheel rotatably mounted on said support in position to engage the glass and means for positively driving saidwheel.

5. In an apparatus for grooving glass plate, the combination with a templet, of a grinding wheel carriage, rotatable on an axis 7 grinding wheel rotatably mounted on said supportin position toengage the surface of the glass and means for positively driving said wheel.

6. In an apparatus for grooving glass plate, the combination with a templet, of a grinding wheel carriage, rotatable on an axis at right angles with said templet, means for producing arelative movement between said carriage and templet, means for resiliently biasing said carriage into engagement with the edge of said templet, a sliding support mounted on said carriage and movable to and from the edge of said templet with a right line movement and engaging the edge of said templet between said spaced apart points, means independent of said first mentioned means for resiliently biasing said sliding support into guiding contact with the templet, a grinding wheel rotatably mounted on said support in position to engage the surface of the glass and means for positively driving said wheel.

7. In an apparatus for grooving plate glass, the combination with a rotary templet, of an arm swingable toward and away from said templct and relatively stationary with respect to the rotary movement thereof, a carriage rotatably mounted on said arm on an axis extending at right angles to said templet, a pair of spaced apart rollers mount ed on said carriage and adapted to engage the edge of said templet, means for biasing said arm and carriage toward said templet to hold said rollers in engagement with the edge of the templet, a shaft journal slidably mounted on said carriage and movable toward and away from the templet with a right line movement, a roller on said journal engaging the edge of said templet, means on said carriage biasing said journal towards said templet to hold said roller in engagement with the edge of said templet, a shaft mounted on said journal, a grinding wheel mounted on said shaft in a position to engage the top surface of the plate of glass to be ground, and means for positively driving said wheel.

8. In an apparatus for grooving glass plate, the combination with a templet, of an oscillably-supported grinding wheel carriage, means for causing relative movement between said carriage and templet, a pair of spaced guide rollers on said carriage, said rollers being oppositely flanged for engagement with the opposite faces of said templet, means for resiliently urging said rollers into engagement with the edge of said templet, a support slidably mounted on said carriage and movable relative to the edge of said templet with a right line movement, a guide roller on said support, resilient means for urging said support toward the edge of said templet and holding said last-mentioned guide roller in engagement with the edge of said templet, a grinding Wheel carried by said support in a position to engage the glass plate, and means for positively driving said wheel.

In witness whereof, we have hereunto set our hands respectively at Bloomington, Indiana, and Terre Haute, Indiana, this 28th day of March and 30th day of March, 1925.

GEORGE SIMONEL. WILLIAM H. JOHNSON.

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