US2849820A - Pottery transfer brushing machine - Google Patents

Description

Sept. 2, 1958 A. C. REscHKE PoTTERY TRANSFER BRUSHING MACHINE 2 Sheets-Shet 1 Filed March 25, 1955 :M4 eineV Dit.

`INVNTOR.

ANNA C. REscHKE T TLZPNE Y 2 Sheets-Sheet 2 INVENTOR. ANNA C RescHKE A. C. RESCHKE POTTERY TRANSFER BRUSHING MACHINE il). Il

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FIG. 5

Sept. 2, 1958 Filed March 23, 1955 United States Patent() M POTTERY TRANSFER ,BRUSHING .MACHINE Anna C. Re'schke, Syracuse-N. Y.

Application March 23, 1955, Serial No. 496,188

l6 Claims. (Cl. 41-1) This invention relates t-o a machine for applying transfers to pottery, and more particularly-where such transfers are arranged in an annular pattern-around rim of plates, saucers and the like.

In a Patent 2,685,753, granted August .10, 1954, there is disclosed a pottery transfer brushing .machine which' .is an vimprovement .in which mechanism is provided-for bringing plates, saucers, and other generallycircular dishes into flight engagement with the reciprocating brushing motion which may lbe along a linear or arcuate path, while simultaneously rotating such dishes "so Ithat -'the brushing action will be uniformly applied over an annular area of the dish to which the transfers are to be applied. The invention further has to do in one form thereof, with the provision of -a to and fro brushing movement, on an arcuate path, concentric with the axis of rotation of the saucers, plates and the like, and 'in which the radius of the path may be varied to conform to the radius ofthe region undergoing treatment. The machine contemplates a foot control for accurately gauging v-the brushing pressure, and which control may be operated with a minimum of fatigue to the operator.

The above land other novel features of the invention will appear more fully hereinafter from the yfollowing detailed description, when taken in conjunction with the accompanying drawings. It is expressly understood that lthe drawings are employed for purposes of illustration only and are not designed as a definition of the limits of the invention, lreference being had for this purpose 'to the appended'claims.

VIn the drawings, wherein like 'reference characters findicaftelike parts:

Figure l is a front elevational view ofthe machine with the vforward legs cut away;

Figure -2 is a sectional vview 'taken substantially on 'the line 2f-2 of Figure l;

Figure 3 Vis a fragmentary end elevational view of lthe treadle control taken Vfrom the section 3--3 of Figure l;

Figure 4 isa fragmentary end view of the central llever fulcrummount as 'viewed from the line 44Yof Figure 1;

Figure 5 'is 'a fragmentary -end elevation "of a modified form of the invention'with parts in section; i

Figure 6 is a fragmentary side elevation, with parts in section of the for-m shown in Figure 5';

Figure 7 -is a sectional view taken on the line 7--7 4of Figure 6; and

Figure 8 is an exploded view 'of the crossheadand crank elements.

Referring to Figure 1, there is `shown a work table l10 mounted on leg yendfr'am'es 152 and-'14, such frames being 2,849,820 Fatented'sept. v32, `1958 ICC braced at thev rear by a horizontal angle iron -tier` bar T'16 a-'nd =an-ang1eirondiagonal brace 18. Each of said end-frames yare provided 'with `upper transverse table support f members 20 and 22, and lower cross braces 24 and 2'6.

-Uponthe table is rigidly mountedastandard ZSThaving -anioverhangingarm 30, the arm supporting a reciprocating brushing member 32, driven by Yalmot-or134,belt'drive 36 andcrank and' cross-head mechanism 38l in thedep'ending head 40 on the Aend `of the arm, the constructintof which is `s'hown in detail in the 'Patent'2f,68 5,753 referred'to above.

'Gn vthe table, there tis also `rnoutit'etl'la vertical tubular :guide 42, :such guide :having ra imountiri'ga'nge 44'rigidly secured tothe table. Within the tubularguideisa bear- .'ing sleeve 46 adapted to 1slide vertically V'within"tl :le guide "42.fandwithin which is journalled a vertical drive spindle 148. Thespindle has a threaded bore `'in its -upp'e'r e'n'dto .receive the threaded stem 50 of -a cir'c'iilr work-Support, `:the support comprising a block-SZ-hav'ing fa fa'ce '53fcoiniplernental vto the :runder surface 'of fa relatively flat dish lor fplate, ithe block being mounted 'on -a :flange 54 integral with the threaded stern 50. A thrust bearing in vthe .form-fof La washer v56 is positionedbetween'theend of the .sleeve I58 and the underface 1"60 :of -t'he ilan'ge In fpractiee, the lthreads of fthe bore -a'nd stem 'v'vill be so correlated in respect I"to the direction of rotation vof E the spindle as lto maintain l'the work l"support "secure jupon vitlie tend ofthe spindle.

.Provision is made for vertically sliding the beating *sleeve in the -guide by a Vfoot t'r'eadl'e, fand suitable 'linkfage, whereby an operator 'may lift the Swork'su'pp'o'rt and work positioned th'ereon'in'to light frictional contactfwith the reciprocating brush. Such linkage comprises a Ilever 62 ifulcmrned at one end in a bracket dpendin'gfrr'n 'the cross-member 20, Vand having fa yoke V6 6 'fait the other end pivoted to the lower endgof the sleeve 46. A l'ever 68, fulcrumed on @a depending bracket 70 mounted "on the table 1`0`is connected-at one-end'tofsaid le'v'erf62 by'a 72, land at the other end to a foot treadle co-nt'rtl 74, byfan-adjustableftension rod`76. l 'The t-readl'e is pivotedjon the rear angle member 16 fon 'spaced fbrackets l7S and 80, ythe treadle being formed of spaced angle irons 82 and 84, having a foot plate'o at their forward ends. 'The rod 76 is pivotally connected 'to the angle iron 82 as at 88. A tension spring 9.0, cnrnecfted between the diagonal brace 1'8 and thea'n'gle iron 82 serves to 'counterbalance the treadle, and normally cause the sleeve 46 to retract to the lower position 'shown in Figure 1, when the workpiece is out of Contact with the 'reciprocating brush 32.

The spindle 48 is provided with a drive lpulley 22, the lait-ter being driven by a belt 93 extending to a pulley/Q35 lof a gear vreduction 94 connected to a drive m'otor i916. The belt fwill be of sufficient length to permit limited vertical movement of the pulley 9 2, without danger ofi: l`1e belt being thrown therefrom, The reduction and motor vare mounted on a p late 98 resiliently and adjustably secured tjo the end frame 14 as by bolts 1'00and 1 0'2, and springs 104 and 106, the spring 104 holding lt l:1 'epli 1 te resiliently against the end frame 14 while the spii'g 1'06 resiliently tensions the be1t93.

Convenient switches 10S and 110 are .providedon the "table 10 for continuing the power to the 'motor 9'6, and

motor '34. A guard 112 enshrouds the belt 93, theguard being supported on a depending bracket 114 'from the around the rim of the plate, the spindle 48 is caused to rotate, and lifted so as to bring the rim of the plate into light engagement with the reciprocating brush 32, through operation of the foot treadle 74. Thus the manual effort of holding the plate true beneath the brush is practically eliminated, and the brush performs a uniform wiping pressure over the annular transfer area as the work support rotates.

The standard may be adjusted so as to swing the arm to locate the travel of the brush along tangential lines located radially from the center. of the spindle, at such distance as the diameter of the particular dish and pattern being applied thereto may require.

In the modified form of the invention, in Figures and 6 there is shown a standard 120 mounted on the table 10, such standard having an overhanging arm 122 which is adapted to support an oscillating lever 124 on a pivot 126 mounted in the pivot block 128. The axis of the pivot 126 is aligned with the axis of the work support 52. The lever 124 at one end carries a brush socket 130, in which is secured a brush 132 or other burnishing device. The brush socket 130 is mounted on the lever end at an angle as is shown at 134, so that the brush will bear against vthe rim 136 of the dish substantially normal to the annular beveled surface thereof. Such angle can be varied to suit the'work piece.

The lever 124 is provided with a number of perforations 138 along its length so that the radius of the brush in its oscillation about the pivot 126 may be varied for plates or saucers and the like of varying diameter. The opposite end of the lever 124 is provided with a block 140 having a swivel pin 142 journalled in an aperture in the lever end, and such block is connected by a link 144 which has a rectangular sectioned end 146 that extends into the crank and crosshead housing 148. The standard 120 has a short bearing support arm 150 in which is journalled the shaft 152, which shaft is driven by a pulley 154, a belt 156 and a drive motor 158 having a drive pulley 160, the motor being mounted upon the standard 120.

The crosshead mechanism is shown in Figure 8, the housing comprising a lower section 162 having guideways 164 and 166, and a hollow space 168 to accommodate the crosshead and crank. The rectangular sectioned end 146 of the rod 144 slides in the guideways 164 and 166, and has on its upper face a transverse crosshead channel 170 adapted to receive the roller 172 which is driven in a circular path 1by the crank pin 174 on the crank disk 176. The crank disk is secured to the shaft 152, which extends outwardly through the bushing v178 in the top housing member 130, which is also hollow to provide space for the crank and crosshead.

Upon rotation of the shaft 152, the rod 144 is caused to reciprocate, and such motion causes the lever 124 to oscillate so that the brush 132 will provide a suitable arcuate rubbing action upon the transfer being applied to the dish 136. The crosshead housing 148 is free to swing about the axis of the shaft 152 as is necessary to cornpensate for the arcuate path followed by the end of the lever 124 to which the rod 144 is attached. The oscillatory movement of the lever 124 may be varied by changing the radial distance between the pivot block 140 and the pivot pin 126, the perforations 138 rendering this possible.

In practice, it will `be understood that a partially tired plate is provided with the transfer having the design or pattern applied to the plate, and that such transfer is caused to be transferred to the plate by the brushing or burnishing action of the brush 132 which oscillates rapidly in an arcuate path while the plate rotates at a desired speed. Thereafter, the work support is lowered and stopped, the plate removed, and finished by further ring to provide the desired glazed surface.

While two forms of the invention have been illustrated and described, it is to be understood that the invention in exploded form is not limited thereto. As various changes in the construction and arrangement may be made without departing from the spirit of the invention, as will be apparent to those skilled in the art, reference will be had to the appended claims for a definition of the limits of the invention.

What is claimed is:

1. A pottery transfer brushing machine comprising a work table having a vertical tubular guide mounted therein,` a sleeve bearing slidably mounted in said guide, a spindle journalled in said sleeve and having a work holder aixed on its upper end adapted to support a plate for rotation, a thrust bearing acting between said holder and the upper end of said sleeve, means for continuously driving said spindle, means mounted below said table including a lever operatively connected to said sleeve for elevating said sleeve in said guide, and a standard on said table having an oscillating brush depending toward said work holder, said brush oscillating in a plane parallel with said table and through a path which lies laterally spaced from the axis of said spindle, and which is substantially symmetrical to a radius extending from the axis to the mid point of the path.

2. A pottery transfer brushing machine comprising a work table having a vertical tubular guide mounted therein, a sleeve bearing slidably mounted in said guide, a spindle journalled in said sleeve and having a work holder for plates affixed on its upper end and having threaded engagement with said spindle, a thrust bearing acting between said holder and the upper end of said sleeve, means for continuously driving said spindle to rotate said work holder, foot-operated means mounted below said table including a lever operatively connected to said sleeve for elevating said sleeve in said guide, and a standard on said table having an oscillating brush depending toward said work holder, said brush oscillating in a plane parallel with said table and through a path which liesl laterally spaced from the axis of said spindle and which is substantially symmetrical to a radius extending from the axis to the mid point of the path.

3. A pottery transfer brushing machine comprising a work table comprising a work top and end support frames, a vertical tubular guide mounted on said work top, a sleeve bearing slidable in said guide, a spindle extending through said sleeve bearing and journalled therein, a rotatable work holder for plates having threaded engagement with the end of said spindle, a thrust means adapted to bear against the upper end of said bearing sleeve, a pulley affixed to the lower end of said spindle below said bearing sleeve, motor and belt drive means for said pulley mounted on o-ne of said end frames, and laterally disposed in respect to said spindle, a lever laterally disposed beneath said work top and having a yoke connection to the lower end of said sleeve and pivotally mounted upon said other end frame, a foot treadle pivotally mounted between said frames, linkage connecting said treadle with said lever whereby to elevate said sleeve through foot operation of saidtreadle, a standard having an overhanging arm mounted on said table top, an oscillating brush carried on said arm and adapted for oscillation in a plane parallel with the table top, said lbrush being located over said work holder and oscillating along a path, the mid portion of which lies substantially perpendicular to a radius extending from the axis of said spindle, and power means for oscillating said brush.

4. A pottery transfer brushing machine comprising a work table having a vertical spindle journalled therein, a work holder for plates afxed on the upper end, means for rotating the work holder, a standard on said table for supporting an oscillating brush, said standard having a pivot mount located over and in alignment with said spindle, a brush supporting lever pivotally secured in said mount, power means for oscillating said lever, a brush mounted on said lever extending toward said work holder, and means for relatively moving the work holder and oscillating brush toward and away from each other to engage the 'brush with an annular area of a plate when supported on said holder.

5. A pottery transfer brushing machine comprising a work table having a vertical spindle journalled therein, a work holder for plates axed on the upper end, means for rotating the work holder, a standard on said table for supporting an oscillating brush, said standard having a pivot mount located over and in alignment with said spindle, a brush supporting lever pivotally secured in said mount, power means for oscillating said lever, a brush mounted yon said lever extending toward said work holder and adapted to be oscillated through an arc concentric with said spindle, means for varying the radius of said arc, and means for relatively moving the work holder and oscillating brush toward and away from each other to engage the brush with an annular area of a plate when supported on said holder.

6. A pottery transfer brushing machine comprising a work table comprising a work top and end support frames, a vertical tu'bular guide mounted on said work top, a sleeve bearing slidable in said guide, a spindle extending through said sleeve bearing and journalled therein, said spindle having a threaded axial bore in the upper end thereof, a rotatable Work holder for plates having a threaded stern adapted to be secured in said bore and a thrust face adapted to bear against the upper end of said bearing sleeve, a pulley aixed to the lower end of said spindle below said bearing sleeve, motor and 'belt drive means for said pulley mounted on one of said end frames, and laterally disposed in respect to said spindle, a lever laterally disposed beneath said work top and hav ing a yoke connection to the lower end of said sleeve and pivotally mounted upon said other end frame, a foot treadle pivotally mounted between said frames, linkage connecting said treadle with said lever whereby to elevate said sleeve through foot operation of said treadle, a standard on said table for supporting an oscillating brush, said standard having a pivot mount located over and in alignment with said spindle, a brush supporting lever pivotally secured in said mount, power means for oscillating said lever, and a brush mounted on said lever extending toward said work holder and adapted to be oscillated through an arc concentric with said spindle,v

and adapted to be 'brought into engagement with an annular area of a plate supported on said work holder upon elevation thereof.

References Cited in the le of this patent UNITED STATES PATENTS Reschke Aug. 10, 1954

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