US1404139A - Stone-polishing wheel - Google Patents

Description

0. E. PHLBRICK. STONE POLISHING WHEEL. APPLlcAxoN FILED Nov. 2o. 1920.

Patented Jan. 17, 1922.

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kDRIE E. PHILBRICK, OF BARRE7 VERMONT, ASSIGNOR TO SMITH, WHITCOMB da COOK C0., 0F BARRE, VERMONT, A CORPORATION OF VERMONT.

STONE-POLISHING WHEEL.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Application filed November 20, 1920. Serial No. 425,427.

Be it known that L Onm E. PHILBRIGK,

'a citizen of the United States, and resident Vone face thereof for working `an abrasive against a surface of a block of st'one whereby the same is reduced to proper condition for subsequent buiflng.

Polishing Wheels of this general type are extensively usedrfor stone polishing pur- Y w'poses in preference to other types of wheels ,y A further important object of my invenbecause scroll shaped flanges have been found to possess many well known advanvtage'sfover other types of flanges, but even vscroll flanged.wheelsv have proven more or `lessfdeficient principally because their constructionusually causes a fast feed of the -abrasive towards lthe center of the wheel with a lresultant banking up ofthe abrasiveand in many instances the breaking or chipadvantages, the feed of the abrasive to the work accomplishe My invent1ona1ms tiol overcome the afore- Vmentioned disadvantages by providing a Y polishing wheel having scroll flanges so ar- :ranged that there is a free feed of the abra sive to the flanges and yet any tendency of the abrasive to bank up due to its `fast feed I toward the center of the wheel is eliminated,

whereby .fast rcutting with minimum wear to the flanges is accomplished without breaking or chipping the edges of the stone being dressed.

tion is to provide a head or plate having grooves 'cut 1n the, under face thereof so as to extend contiguous to a fla-nge or flanges adaptedgto be detachablyfsecured to the plate, `which 'flanges may be of any `desired configuration, purpose beingnto' provide a v'free passage between the flanges for the .abrasive at all times, particularly when the flanges have become worn down to and beyond an extent that heretofore has required the substitution of new flanges. This feature of my invention thus introduces a factor of economy in stone surfacing which is of manifest and exceptional importance.

The essential characteristics of my improved polishing wheel, whereby all of the foregoing is accomplished 'are illustrated in a preferred form in the accompanying drawing, but it is to be understood that various minor modifications as well as desirable additions may be made inrand to the structure shown within the scope of my invention as delined in the appended claims.v

ln the drawings, wherein like characters of reference denote corresponding parts in the separate views- Fig. l is a bottom view of a polishing wheel embodying the novel and essential f features o'f my invention; and

Fig. 2 is al transverse section through the wheel taken on the line 2 2 of Fig. 1.

Referring to the drawings in detail, 10 designates the head or plate of my improved wheel which is of the usualfdisc .form having an opening 11 in the center thereof and provided with any desired means (not shown) whereby it may be attached to 'a driving shaft for rotating and bodily moving the same over a surface to be dressed or polished. This plate is of novel construction, as is also the relative arrangement of any desired number of sets of lead, intermediate and inner scroll flanges 12, 13 and 14, respectively, which are preferably detachably secured to the under face thereof, as by means of bolts 15 passing down through the plate and threaded into openings 1n the flanges, there preferably being two setsof these flanges, as shown, although as will be obvious a greater number of sets may be provided if desired.

By reference to Figure 1 of the drawlng it will be observed that the lead ends of the inner flanges 14 are disposed at diametrically opposite points on the plate 10 intermediate the center of the latter and its periphery, and that from their lead ends these inner flanges extend at a constant pitch'spirally inward and terminate near the opening 1l,

being` nested one within the other in relative spaced relation as shown.

The intermediate flanges 13 are spaced outwardly with respect to the inner flanges '12 and follow thc curvature of the-latter, their inneil ends'terminating in spaced relation to the lead ends of the inner flanges and their lead ends being disposed slightly forward of the lead ends of said inner flanges and intermediate the latter and the periphery of the plate. i

The respective lead flanges 12 preferably have their lead'ends disposed substantially flush with the periphery of the plate 10 at points substantially in radial alinemcnt with the 1-espectiveinner'ends of the intermediate flanges, from whence they are curved spirally inward at a constant pitch throughout the major portion of their length so as to extend one in spaced relation to each intermediate flange 13, but as said lead flanges approach points in substantial radial alinement with the inner ends, respectively, of

the intermediate flanges they begin to'curve abruptly inward, which abrupt curve is continued, as at 16, to the inner ends of said lead flanges, the said inner end of each lead flange being disposed between and substantially alined with the leadv end of an inner flange 14- and an adjacent inner end of an intermediate flange 13, and in spaced relation to an adjacent lead end of an intermediate flange, as well as in spaced relation with the lead end of one of the inner flanges and an intermediate Aportion of the other inner flange which intermediate portion of the latter inner flange is disposed between the inner end of the lead flange and the center of the plate, as shown.

VThe lead end of each of the flanges is preferably curved to permit the abrasive to pass freely under the flanges during rotation of the wheel and, as shown, the lead ends of the lead `flanges are sharpened so as to (rather the abrasive and direct 1t between the f anges,

kin which connection it will be observed that av free feed passage is provided between the lead ends and the abruptly inturned ends of the' respective lead flanges to direct the abrasive into'all of the channels betweenV the flanges as shown by the arrows in Fig. 1. It

' will also' be observedthat after entering the channels the'abrasive must travel at least a vdistance equivalent to a full revolution of the wheel before it can reach the center of the latter. The 'result is that a maximum amount of abrasive is carried by the wheel at' all times, thus insuring fast cutting with minimum wear upon the flanges, and at the Scroll flanges when constructed and arranged in accordance with the foregoing may be mounted upon any desired type of base plate, but prefer to use them in conjunction with a plate of the type illustrated to advantage in Fig. 2 of the drawing. This plate is of novel construction in that it is provided upon its under face with grooves 17 which extend contiguous to the flanges 12, 13 and 14 and in effect provide arched spaces between adjacent flanges, bosses 18 being thus formed.' .between adjacent 'grooves to which the flanges may be secured. By such a construction it is apparent that a free passage is maintained lbetween the flanges, even after the same have worn down to and beyond an extent which heretofore has necessitated their replacement to vavoid banking up or clogging of the channels. The base plate may have a single groove or a number of grooves and, as is apparent, may be used inconjunction with types of scroll flanges other than those herein shown andV described.

1. A stone polishing wheel comprising a plate, lead, intermedia-te and inner scrolls mounted thereon, the lead endsfof the inner scrolls being spaced with respect to the inner 'I the inner ends of the lead scrolls extending into said spacements.

2. A stone polishing wheel comprising a plate, lead, intermediate and inner scrolls mounted thereon, the lead ends ofthe inner l scrolls being spaced with respect to the inner ends of the intermediate scrolls, and .the inner scrolls being interposedbetween said spacements and the centerof the wheel, the inner ends of the lead scrolls extending into said spacements and across jadjacent ends of the Yinner and intermediate scrolls and terminating in s aced relation to the interposed inner scro ls.V f

3. A stone polishing wheel comprising a plate, lead, intermediate and inner scrolls mounted thereon, the lead ends of the inner scrolls being spaced with respect to the inner ends of the intermediate scrolls, andthe inner scrolls being interposed between said spacements and the center of the wheel, the Y inner ends of the lead scrolls extending intol said spacements Vand beingv disposed in spaced relation to the'lead ends of the intermediate and inner scrolls. l

4. A polishingV wheel Vplatehaving a. face thereof provided with a groove and adapted to have a flange secured thereto extending contiguous with the groove.

5. A polishing wheel plate having a, face thereof provided with grooves forming Vcorrespondingly disposed ribs adapted to have Y flanges secured thereto extending contiguous with the grooves, c

6. A polishing Wheel plate having a face thereof provided with substantially spiral grooves forming ribs adapted to have flanges secured thereto extending contiguous with the grooves.

7. A stone polishing Wheel comprising a plate, lead intermediate and inner scrolls mounted thereon, the lead ends of the inner scrolls being spaced with respect to the inner signature.

ORIE E. PHILBRICK.

JLA,

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