US1901510A - Edging apparatus - Google Patents

Description

' March 14, 1933- H. J. HAMANN EDGING APPARATUS Filed May 13, 1932 lmventor Henra/ c! Hamann.

Gftorneg tainthe said sheets steadier and in a truer,

the edges of Patented Mar. 14 1933 UNITED STATES 'PATENT "oFF-ICE.

HENRY J. HAMANN, OF TOLEDO, OHIO, ASSCIIG-IINI'OIR,r TO LIBBEY-OWENS-FORD GLASS; v

COMPANY, OF TOLEDO, OHIO, A. CORPORATION' OFFOHIO EDGING APPARATS Application md May 13, 1932. seria1' No.c11,09o.

rlhe present invention relates to glass Yedging apparatus and more particularly to novel means for maintaining the glass being edged closed an edging machine including a, supporting framework .designated in' its entirety i 5. and upon which is, carried arranged channel members" 6 in proper contact with the edging tool.

In the glass surfacing art, it is customary7 to use a continuous type of machine for the grinding and/or finishing of the edges f glass sheets. Broadly speaking, with such a machine, a number of spaced sheets of glass y to be edged are vertically disposed in spaced relation relative to one another and passedv substantially horizontally over and in contact with one or a lurality of surfacing elements whereby to rst grind and then polish thesheets. It has been found, however, that with glass sheets of certain contours, diiiiculty is experienced in the moving ofthe sheets over the surfacing elements in that there is a tendency for the said sheets to tilt forwardly or rearwardly or otherwise get out of proper contacting relationship4 with said surfacing elements.

It is, therefore, an important object of this invention to provide novel and Vimproved means for use upon edging machines of the above character which will function to maintain the glass sheets in proper operative relationship with respect to the surfacing elements.

Anotherimportant object of the invention is to provide means engaging the upper edges of the glass lsheets which rwill serve to maincondition with respect to the surfacing elements than heretofore.

Other objects and advantages of the invention will become more apparent during the course of the vfollowing description `when taken in connection with the accompanying drawing.

Inthe drawing forming a part of this ap,- plication and wherein like numerals are employed to vdesignate like parts throughout the same,

Fig. 1 1s a side eleva-tion of a portion of an edging machine with which the present invention 1s incorporated,

Fig. 2 is a sectional view taken substan tially on line 2 2 of Fig. 1, and

' by the numeral Fig. 3 is a section line 3 3 of Fig. 2.

taken substantially on t,

Referring now-to the drawing, there the horizontally having positioned therein the supporting runways 'l' longitudinally grooved as, at V8,. Also carried by of grinding and/or polishing wheels 9 only one of which has been shown. However, each `wheel is adapted to be rotated within a receptacle l10 containing a suitable labrasive material and is Idriven fromV a` lshaft 11 through suitable gearing (not shown). i vThe upper portion of the surfacing wheel 9 is received within an openingbetween two adjacent channel members 6, and 'each wheel is 'provided with one or more grooves 12around f the framework 5are a plurality:

the periphery thereof. These grooves are Y grooves 8 in runways 7 The particular `con- -m substantial horizontal alignment with the struction of the surfacing wheel',together with the mounting and drive therefor, have not been illustrated specificallyfsin'ce they constitute nopart of the present invention per se. l

Mounted above the runways 7 is an endless sprocket. chain 13 trained at each end of its loopy about asprocket14, ythe upper runor flight-of the chain being supported upon and vsliding over a stationary supporting member or table y15. The upper edges of thelsi-de portions of the channel-members 6 constitute guide rails alongwhich pusher blocks 16 are adapted to beslid, these pusher Vblocks being suitablyl connected to and driven-forwardly bythe lower flighty of thesprocket chain 13. The pusher blocks are preferably provided with a-plurality of slots-.within which the rear vertical edges of the glass sheets 17 fit so that the said pusher blocks, therefore, serve to advance the glass sheet'for'war-dly in the direction indicated by the larrow in Fig.- 1.

Slidably supported by the stationarymember or table y is av guide member18 engaging the vforward edges ofthe glass sheets to guide the said sheets and maintain them properlyspaced from one another.

- facing The glass sheets 17 are shown as being rectangular and of greater height than width. During the surfacing operation, a plurality of sheets are first stood on `edge upon one of the runways 7 at the forward end of the machine and are Y maintained in `properly spaced relation by the guide member 18. rlhe pusher block 16 is then moved to engage the rear edges ofthe sheets and to advance the said sheets forwardly over successive surwheels 9. As pointed out above, the surfacing wheels are provided with spaced peripheral grooves 12 extending around the periphery grooves is such as to give the .desired contour to the edges of the sheets being surfaced.

One of the diiiiculties ordinarilyencountered in surfacing the edges'of glass sheets upon a machine of the type'describedy hereinabove, resides in the tendency ofthe sheets to move forwardlyv in an ununiform or` jerky fashion, and also in the tendencyof the sheets c, to tip or tilt either forwardly or backwardly depending upon-the profile of ing the vsurfacing. thereof and which naturallythrows themV out of proper operative relationship with respect to the ysurfacing wheel. The principal aim of the present invention therefore is to provide means for overcoming this tendency of the glass sheets to tip, tilt or otherwise'move out of proper position with respect tothe surfacing wheels Yduring the surfacing operation. To this end, there is provided new and novel means engaging the upper edges of the glass sheets,

Y which means offers a controllable amount of and being provided in its periphery with one glass sheets resistance to the forward movementof the over the surfacing wheels. Inorder to accomplish the above, there is arranged opposite each surfacing lwheel 9 a vertical standard 19 provided with a vertical slot 20 in which is slidably mounted a block 21. The block 21 and associated parts are supported by a cable 22-connected at .one end 4to the. block and passing upwardly overa pulley 23 carried by standardf19.:V Secured vto the opposite end of the cable is a counter- Vweight 24 whichv serves to counterbalance the i block 21V and Carriedv by the the parts carried thereby. 1

block 21 is a forwardly` directed horizontal pin or trunnion' 25 uponr which is pivotally mounted a sleeve 26. Cai'- Vried by orY formed integral with this sleeve is a rod 27 upon vwhich is slidable a weight 28 held in the desired adjusted position by a set screwk 29. Also carried by or" formed integral with the sleeve 26 and extending at substantially right anglesto lthe rod l27 is an arm 30 terminating in ya bearing portion 31 Y within which is mounted one end of the horizontal shaft 321 Botatably `mounted Kupon' this shaft is fa'roller 33 preferablyv formed of rubber or a rubber composition material or a plurality of grooves 34 disposed in verf in place by a thereof, and the shape of these the glass dur- `ing opposite ends of bytightening up or wardly of roller 33 is a .circular metal plate 36 provided with a series of round-headed projections or knobs 37 which engage the adjacent end of roller 33. vCarried'by the plate 36 is a fiber'disc 38 and fired upon the shaft inwardly of disc 38 is a collar 39 secured set screw or the like 40.

Also loosely mounted upon theshaft 32 outwardly of theroller 33 is a metal plate 41 'similar to plate 36 and being ,likewisep'rovided with a plurality `of knobs orprojections 42 which engage the outerend of the roll-er. 'Secured to the-back vof the plate 41 'is a-iiber'disc 43similar to disc 38. The outshaft 32 is threaded as at 44, and

er end'of threaded thereupon is a collar`45 held in place by a set screw 46.V

AFrom the above, roller-.is adapted to 32 and that the metal plates V36 and 41 are caused to rotate therewith due tothe provisionofthe knobs Yor studs 37 and 42 engagsaid roller. Also, that loosening the collar 45, the roller can be moved longitudinally upon the shaft 32 so as to either increase or decrease the amount of friction between-the liber discs 38 and 43 and the 'lars 39 and 445. Y

lof the glass sheetsy 17, the upper edges thereof are adapted to bereceived within the .grooves 34 in the. corresponding roller 33.

Although 'composite or safety glass has been illustrated inv Fig. 2, yet it will be readily apparent that this machine may be used for grinding the edges of plate glass as well as other flat sheets or plates. f Y

V- In operation, the glass sheets tobe treated are first .mounted-.upon one of the runways 7 at the forward@` end of the Vmachinev and placed in position ly over the surfacing wheels.

ticular machine herein shown, glass 17 (Fig. 2)(.of similar shape and size are placed side by side and movable as a unit or a group simultaneously over the surfacing With the parwheels. c Uponactuation of the pusher device lrespective col#v five sheets of it will be seen. that-the freely vrotate upon shaft e for movement horizontaleachv successive surfacing wheel, the upper edges of the sheets will move beneath and in Contact with-the respective roller 33. vDue to the weight exerted by the roller-upon the upper edges of the glass ysheets,`tl ie said sheets j will be held downwardly in'contact'with the surfacing wheel. lin-order to prevent either forward or backward tippingV or tilting of the glass sheets during the surfacing thereof, and also to insure proper working relationship between the glass and surfacing wheel, the collar 45 is adjusted upon shaft 32 whereby to cause a binding action between the fiber discs 38 and 43 (which rotate with `metal plates 36 and 41), and the respective collars 39 and 45 which are fixed to the shaft.

rIhis will serve to exert a braking or retarding action upon the roller and will thereby prevent said roller from freely rotating upon shaft 32. While in some cases it may be desirable to permit free rotation of the roller, yet it has been found by actual experience that with some sizes and shapes of glass sheets, the braking or retarding of the roller in a manner to prevent free rotation thereof is of considerable importance, and that much more satisfactory edging results are obtained than where the roller is allowed to freely rotate. As set forth above, there is a tendency for the glass sheets to tip or tilt either forwardly or backwardly during the surfacing thereof depending upon the profile of the glass, and it has been found that by preventing free rotation of the roller so as to provide greater friction between the rollerl and glass sheets, the said sheets are held much steadier, are maintained in a. truer condition,

and the tendency thereof to tip or tilt is eliminated.

It is to be understood that the form of the invention herewith shown and described is to be taken as the preferred embodiment of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

I claim:

1. In a machine for grinding an edge of a plate of glass, the combination of grinding means upon which the glass is partially supported on edge while being ground, means cooperating with the grinding means for guidingly supporting said plate of glass dur-V ing grinding thereof, a roller engaging the upper edge of the glass plate for maintaining it in a vertical position and in engagement with the grinding means, and means for preventing free rotation of said roller.

2. In a machine for grinding an edge of a plate of glass, the combination of grinding means upon which the glass is partially supported on edge while being ground, means cooperating with the grinding means for guidingly supporting said plate of glassduring grinding thereof, a roller engaging the upper edge of the glass plate for maintaining it in a vertical position and in engagement with the grinding means, and frictional means for retarding the rotation of said roller. I

3. In a machine for a plate of glass, ing means upon grinding an edge of the combination of grindwhich the glass is partially guidingly supporting ing grinding thereof,

supported on edgel while being ground, means cooperating with the grinding means for guidingly supporting said plate of glass dur- 4.' Ina machine for. grinding an edge'of' a grinding y meansupcn which the glass is .partially supplate of, glass,'fthe combination of ported yon edge while VbeingI ground, 'means cooperating with the "grinding means for guidingly supportingisaidplate of glass during grinding thereof, 'a roller engaging the upper edge i of the "glass plate for1 ,maintaining it in a vVertical position andin engagement with the grinding means, ashaft upon which said roller is rotatably mounted, and means" carried "by thel shaft "and 'engaging opposite 'ends ofsaid lroller for .preventing the free rotation thereof. Y 5. InY a machine for grinding an'edgerof a plate-of` glass, the combination of grinding meansupon Awhichthe glass is partially supported on edge while being ground, means'cooperating with the grinding means for guidringly supporting said vplate of glass duringI grinding thereof, aroller engaging the up-v per edge of the glass plate for maintaining it in a vertical position with the grinding means,

said roller is rotatably mounted, members carried by the shaft at opposite ends of the roller and rotatable with said roller, and

and in engagement a shaft upon which means frictionally`-engaging said members for preventing free rotation ofthe roller.

6. In a machine for grinding an edge of a the combination of grinding'l ingv grinding thereof, a roller engaging the@ upper edge of the glass plate for maintaining it in a vertical position and in engagement with the grinding means, a'sliaftv upon which said roller is rotatably mounted, members; by the shaft at opposite ends of the:

carried roller and rotatable withV said roller, andad- -ditional members fixed to the shaft and frictionally engaging the first mentioned members for preventing free rotation of the roller.

- 7. In a machine for plate of glass, the combination of means upon which the ported on edge while grinding glass is partially supbeing ground, means cooperating with the grinding lmeans fori` said plate of glass dur` a roller engaging the upperedge of the glass plate for maintaining it in avertic al"position and lin engage'- grinding an edge of a ment with therfgrinding means, 'a'sliaft upon *130 ywhich said rolleris rotatably mounted, members carried by the shaft at opposite ends of Y the roller and rotatable With said roller, ber

discs carried by said members, and means frictionally engaging said liber discs for preventing free rotation of the roller.

" 8. In a machine for grinding an edge of a the combination 0f grinding plate of glass,

the glass is partially sup'- means upon which ported on edge While being ground, means cooperatingy with the grinding meansy for guidingly supporting said plate of glass durn ing grindingfthereof, a roller engaging they upper edge of the glass plate for maintaining it in a vertical position and in engagement With the grinding means, a shaft upon which said rollerl is rotatably mounted,y members carried by the shaft at opposite ends of the roller androtatable With said roller, fiber discs carried by said members, and addi4 tional Vmembers iXed to the shaft and fric-v tionally engaging the fiber discs for prevent- Y ingr free rotation of the roller.v

Signed at Toledo,in the county of Lucas and State of Ohio, this 9th day offMayl 1932. Y HENRY J. llAMANN.'

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