US1920076A - Machine for truing tile - Google Patents

Description

July 25, 1933. A. HAPPEL MACHINE FOR TRUING TILE Filed Aug. 20, 1927 5 Sheets-Sheet 1 S Ud e 4 u O July 25, 1933. A.. HAPPEL .MACHINE FOR TRUING TILE Filed Aug. 20, 1927 5 Sheets-Sheet 2 July 25, 1933. A. HAPPEL MACHINE FOR TRUING TILE Filed Aug. 20, 1927 5 Sheets-Sheet 5 mim! July 25, 1933. A. HAPPEL MACHINE FOR TRUING TILE Filed Aug. 20, 1927 5 Sheets-Sheet 4 mbouwgS July 25, 1933. A. HAPPEL MACHINE FOR TRUING TILE 5 Sheets-sheet 5 Filed Aug. 20, 1927 E wr@ w H r E w 4,

. ioors, walls, and for other purposes.

PatentedJuly 25, 1.933

UNITED s-TArasA PATENT l OFFICE ALBERT HAPPEL, OF T0LEDO, OHIO, ASSIGNOR, BY flVIESSN'E ASSIGNMENTS, TO UNITED STATES QUARRY TILE COMPANY, OF PARKERSBURG( WEST VIRGINIA, A CORPORA- TION OF DELAWARE MACHINE Fon TRUING. TILE Application led August 20, 1927. Serial No. 214,323.

The invention relates to the manufacture of tile such as used in vthe constructionO of ne method of manufacture largely used is to force a column of clay outward from an adjustable nozzle and then sever the column into blocks of the required length by wire cutters or equivalent means. The blocks which are produced by this process are not usually' exactly square or'smooth on the cut sides and it is therefore necessary .to renish them to produce a high grade product.

While the invention nds particular utili-, ty 1n connection with machines for trumg tile and while the illustrative embodiment of the invention herein shown and described is adapted for refinishing` the sides of the tile, nevertheless as this description proceeds it will become immediately apparent to those skilled in this art that in special. instances the inventionmay be used in whole'or in part for finishing various other articles.

It is the object of the present invention to provide means for squaring and finishing such blocks and to this end the invention consists in the Iconstruction as hereinafter set forth.

In the drawings:

Figure 1 is a side elevation of the machine.

Figure 2 is a plan view thereof.

Figure 3 is a sectional view taken on the plane indicated by the line 3-3 of Figure 2.

Figure 4 is a sectional view taken on the plane indicated by the line 4 4 of Figurel.

Figure l5 is a detailed perspective View showing one end of the machine.

Figure 6 is adetailed view partly in section showing the trimming mechanism.-

' Figure 7 is a detailed view partly'in section showing a portion of the automatic clampingmechanism, and A Figure 8 is ad`agrammatic view of the general arrangement' of the driving mechanism.v Figure 9 isa detail view showing the auxiliary grinders and the various'adjustments thereof. y 4 Y i 'My improved kmachine kcomprises essentiallyV Ymeans ,for intermittently advancing a series of blocks to be refinished and means operating at one point in the travel thereof for grinding theopposite ends of the blocks to true'and finish the same. The blocks are operatedon before going to the kiln and of the block and are travelling ina direction towardy the finished face. The grinders are also movable laterallytoward and from each block during the interval in which it is held in grinding" position so as to perform the work and then provide clearance for the movement away from said block andthe positioning of another block'to be ground.

In detail A is the frame Yof the machine on which is mounted an endless chain carrier B travelling over sprockets C,- C at opposite ends of the frame. This carrier has mounted thereon-a seriesof clamps D for receiving the blocks to be ground and for holding the same rigidly during the ygrinding operation. E, E are grinder disc wheels which are mounted upon arbors F, F and are arranged on opposite sides of the carrier B.

Inorder that the grinders E, E, while operating 'upon the work will be moving toward the finished face ofthe block, said blocks are located for such operation on one side of the vaxis of the arbors F. F Inasmuch 'however7 as` the carrier travels past the entire face of the grinder and is as will be hereinafter explained intermittently operatedy step bystep, it is necessary to avoid interference 'between the opposite sides of the grinders andthe finished blocks. This I have accomplishedby arranging the axes the blocks will be substantially parallel'to each other. This will arrange the portions of the grinders on opposite sides of the aXis at divergent angles and will provide abundant clearance for the movement between the same of the linished blocks.

More in detail the'arbors F, Ff are mounted in bearings G upon blocks H which lat ter are adjustableupon ways I perpendicular to the plane of the carrier B.V The bearings.- Gi areset atthe desired "angle to the ways Tand the arbors F, F( are longitudiprising the gears N, `-ll, N2, N3 through which power is transinittedfat a greatly re-` duced speed to the shaft O. .The shaft C) transmits inotionto a parallel shaft `P through the medium of a Geneva movement.

Q, so that the yshaft P is intermittently actuated. This shaft is connected through thev sprocket andl chain R to theshaft of oneof j the4 sprocket wheels Cf Vthereby intermittentv 1y rotating said sprocket wheel and advancadapted to v engage in the angularly 1 spaced ing the carrier.- Referring more in detail to. the "mechanism for accomplishing tlie`i1iterinittentA operation, it willbcY noted that theV gear Q is provided adjacent the periphery thereofwith alateral projection Q grooves@2 formed in a star wheel Q3 which as shown inFigure 1 is connected to the` carrier B through the median ofk a chain R.

L The project-ion Q3 is guided into the grooves Q2 by means of cooperating vcam j surfaces Q11vk and Q5l formed on the star wheel and gear QI respectively. j The mechanism for intermittently moving `the' grinder wheels into` engagement with the work .comprises cams S preferably mounted uponthe shaft() adjacent the opposite ends ofthe frame. ,Each of these `-cams engages leverT which iscon'iiected by a link U with. anotherlever Vk fulcruined upon the blocks H which support the bearings G for the arbors F and F. The links U adjustably engage the lever V so as to.

permit of adjusting the blocks I-Inpon the ways I to set the machine for various kwidths of tile. This adjustment, as shown, is provided witha series of apertures U in the link U for engaging the 'coupling pin U2 with the lever Vf.

The clamps D which hold the tile while operated upon bythe grinders are prefer` ably; automatically V tightenedand released during advancement yof the carrier.. This,

There is also a stepd0wn gear train driven from the shaft J and com` as shown, is accomplished by providing each clamp with a stationary jaw D and a niovable jaw D2, theV latter being carried by a bell crank leverD3 hating a roller DA1 engaging a ycam track D5.V As shown the opposite end of the bell crank is journaled upon a shaft Dcarried by the clamp D. A suitable coil spring D7 is coiled about the shaft DG and has one end engageable with the bell crank to normally .urge the same upwardly toward the clamp. With such an arrangement the clamped position. The track D5 is so fashioned as to release the jaws at a point on the carrier where thelblocks to be ground are placed. in position. The track is then cammed "to tighten the jaw D2 holding the block lwhile it isbeing ground and after passing out of engagement with the grinders the jaw-D2 is again released to permit of removing the finished block.

During-'the ltravel of the carrier the clamps D are supported on guides or tracks W mounted'oii brackets W at opposite ends of the frame.

latter are mounted on brackets X attached `vto the blocks Thisperinits ofsupportiiig the tile adjacent tothe edges to be size of tile by merely shifting the blocks H The tiles. are, however, supportedfbyouter tracks orguides X which Vjaw D2 of theoclanip; will benormally held in and correspondingly adjusting vthe connection'between the link U and lever V.

Withl the construction as described the complete operation is as follows: to set the machine for operation the blocks H, links U and levers V are first adjusted so Vthat the parallel portions of the grinders E and E when at the innermost end of their Vtravel j are spaced from each other to correspond to the width of the finished block. This, as

previously described Vwill also adjust the supporting tracks X to position 'adjacent the edges lof the tile.y Y

The machine, being properlyadjusted, it is setV in operation, the shaft J being driven continuously vand connn'unicating continuous motion at a greatly reduced speed to the shaft O. Each revolution of the latter shaft will, throughithe star wheel Q, impart a stepped movement to the 'shaft P with an interval of` rest between succeedingV steps. The chain R and sprocket C impart a sirnilar timed movement to the carrier chain B. At the saine time the continuous rotation of the cams ;S will impart a' yreciprocatory` movement to the arbors F and F in the bearings .Gr` .through the medium of the levers T links U` and the leversV. These two movements are so timed that during the intervahof rest'when thetile in 'one ofl't'he portions ofthe grinder wheel these grinder Wheels will be moved toward each other simultaneously contacting with the opposite edges of the tile 'and'grinding to i'inished size.v This grinding, as before stated, is by movement of the grinding aces toward the upper or finished face of the, tile thereby avoiding any danger of splitting off the y means of the springs Y. .The grinder wheels Y are also capable of verticall ad-y corners.

Aftereach grinding operation and during,

the interval when the grinders are moving away from each other the carrier chain is advancedmoving the tile just ground to the opposite side of the axis of the grinder and bringing another tile into position to'be ground. The grinder wheels then approach each other again but do not Vcome in contact witli-the previously finished tile due to the clearance provided by the angular arrangement of the arbors and the conical shape of the 'grinderwheels Thus it is not necessary to advance the carrier so as to completely clear-the grinderwheels after each operation thereby making a more compact and slower moving mechanism.

Itis desirable to remove the sharp corner which. is produced by the intersection of the ground edge with the upper face of the tile` This/is accomplished by a pair of grinder wheels Y positioned upon diainetrically opposite sides of the machine and mounted upon the tracks X, in a position toengage the corners of the tile during advancement of the carrier. As shown, the grinders Y are yieldably forced toward the tile by jiistinent as well as the transverse adjustment to accommodate tiles of various thickness.

It will beunderstood that the clamping faces of the jaws D, D2 which engage the parallel sides of the tile are perpendicular to the plane of advancement of the carrier Y so that the grinder wheels in operating upon the ends of the tile will square the same to said sides.` It will bealso apparent that the grinder wheels being conical will produce a slight curve in the ground surface but on ,account of the large diameter ofthe wheel pletion of the grinding operation to move straight line.

What I claim as my invention is:

V1. yIn a machine Jfor truing tile, the combination with means for Aintermittently advancing a series of tile, of a pair of grinder wheels disposed upon opposite sides of the advancing means and engageable with op'- positeiedges of the tile for lfinishing the same, tracks for supporting the tile adjacent the edges to be ground, trimmers positioned upon said tracks for trimming the corners of the tile after thegrinding operation, and commonV meansl for adjusting said grinder wheels, tracks and trimmers as a unit to accommodate tiles of various widths.v

2. In a machine for truing tile, the coinbination with a frame and a carrier supported by the frame for intermittently advancing a series of tile, of` a grinder wheel positioned to one side of the carrier, means formoving the grinder wheel into operative relation to one tile of the series to square the endthereof, said means also operable uponr comthe grinder wheel away from thecarrier,

meansv operable during the interval i the j grinder is moving away from the carrier to advance the latter a predetermined distance to bring the next adjacent tile into operative position, and means `including grindersl mounted upon said frame for removing the sharp corner produced by the intersection of the ground edge with the upper edge of the tile. y j Y 3. Iii. a machine for truing tile, the combination with means `orintermittently ad- Y vancing a series of tile and means for clamping the tile to the carrier,'oiC a grinder wheel, means operable during the intervals of rest of the series for moving said grinder wheel into operative relation to one tile of the series to square the end thereof, means operableupon completion of the grinding operation to remove the sharp corner produced by

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