US2533948A - Edge cleaning apparatus - Google Patents

Description

Dec. 12, 1950 J. R. MARCUS ETAL 2,533,948

EDGE CLEANING APPARATUS 5 Sheets-Sheet 1 Filed July 11, 1945 //v vmrms J. A. MA RCUS f. W TURNER A TTO/P/VE'Y J. R. MARCUS ETAL EDGE CLEANING APPARATUS Dec. 12, 1950 Filed July 11; 1945 5 Sheets-Sheet 2 0R9. v. P.

WMT 7 NEW/M J w Dec. 12, 1950 J. R. MARCUS ETAL EDGE CLEANING APPARATUS 5 Sheets-Sheet 3 Filed July 11, 1945 m/mvmes J RMA/ecus A W Tum/5R 5/ JAM; law

A TOR/VF) Dec. 12, 1950 J. R. MARCUS ETAL 2,533,948

EDGE CLEANING APPARATUS 5 Sheets-Sheet 4 Filed July 11, 1945 Mg E I/VV'NTORS J. A. MARCUS r'-.' W TURNER 5/ A M- Z.

ATTOR/V) Dec. 12, 1950 MARCUS HAL 2,533,948

EDGE CLEANING APPARATUS Filed July 11, 1945 5 Sheets-Sheet 5 gagedby asliding contact. through the winding I one edge of the card it becomes necessary to remove the insulation from the washes and their i mounted together on the carriage in' position to "be individually adjusted many with 'respectto the carriage.

"be had'by reference "'s'c'ription when considered 'in conjunction with the accompanying drawings, wherein Patented Dec. 12, 1950 U N 1 D 15 PATENT QFEF! CE "2,533,948

EDGEGLEANING APPARATUS 1! creme '3: Marcus and Frederick WI Turner, Chicagoflll fass'ignoj rs to WesterNElectric" Gompany, Incorporated, NewYork,NfiY.,a corporaltion of New Yon;

- Application'J-uly 11, 1945; Serial No; 604,462

iz'elaims.

This invention relates to: an edge vcleaning apparatus'andmore particularly toan apparatus for removing insulation from-the wires wound on potentiometer insulators. I

In'the manufacture of high-precision'potentiometers,- fine insulated wire is-wound on relatively thin strips-of insulating material called cards, the width of which may vary over a wide range, wherebythe desired amount of conductor' -may' be WOlIIld in a givenv length of the card. After these cards have wire'wouncl'on 'them,;-they may-be assembled in potentiometers in -position to have one edge of-the winding en- Since--the circuit must be completed along the wire along that edge.

--It is an object of the-presentinvention to provide a simple and effective mechanism for'irapldly cleaning the-edgeof an article. H A

In accordance with one-embodiment of the invention a wound potentiometer card is clamped to -a table by spring pressed clamping devices arranged along the'length of the card and .the

table which receives the card. In order to-accurately locate the: card'in position on the table,

"a sage is provided for aligning the" edge of "the card which is to be cleaned in position; extending apredetermined distancebeyond the edge of the jtable whichfsupports it in position' to be engaged by a-pair of wire brushes r'otated'in opposite directions and driven by suitable gearing 'from a common drive means. In thepreferred forn'rof the 'invention,' the-hr shes are mounted on .a carriage aligned to" travel parallel tdthe edge of the card supporting 'table by a screw 'feedde'v'ice, driving means "being horizontally and ver- A completeunderstanding'of the invention may to the following I detai1edfde- *Fig. 1 is a'plan vieworan apparatus e'rnbodying the inventionpart being broken away to con- "serve" space, and showing the apparatus ininop- Fig, 3 is" a reafeleva'tionalf 'view showing the apparatus asvi'ewdin the'direction o'f'the arrows along theline 3-}3ofFig. l; y

" Fig.4 isa rragmemaryemargeaman view of a portion of the apparatus-shown in Fig; showing the apparatusin one of'its operative positions wherethe brushes have started to clean the insulation fro'm the-wire at-the edge offthe po- 5 'tentio'rneter card;

7 Fig.5 a vertical sectional view taken subs'tantially along the line 5-5 of Fig. 4 in thedirection of the arrows;

'Fig. '6 is a transverse v'e'rticah sectional 1 view V onan enlarged scale taken along the 1ine76- 6 ofFig' 1 in thedirection of the arrows and 'showing'one of the clamping mechanisms 'in'fi'tsi-noperative position;

Fig. '7 isa-fragmentary 'view'of the-npper'end tr enact the clamping devices shown in apar- 'tially'operated position;

Fig. 8 is a v-i'ewof one-of theclampingmechanisms taken lookin in the direction of the arrows along-the line 8 8 of Fig. 6;

'l lig. 9: is a transverse vertical sectional'view c'man enlarged scale, taken substantially along 'the' l-ine"99 of Rig. 4, and showing one of-the clamping-j'fimernbers in its completely operated positionfand Fig. -10 .isa sectional View taken' througn one of the potentiometer cards and showing memenner' in 'whi'ohthe wire brushes engage a-n dge of thecard for removingthe insulation 'fidhfthe ""wire'wound on the card.

I In the drawings, apotentiometer card |5 'of.'the 'ltype proce'ssed' in this apparatus is most" clearly illustrated in Figs. 'and 10. The card 15 has one Straight side or edge !E,'whereas its rear edgefi'l is of irregular contourwhereby a desired-amount or resistance wire' 18 may be wound on the card to provide varying amounts of'resi'stance for equm sections of thelength'of the card. The'wire ll "'iscoated with insulation such; for exfi mblelas 'enaineL'and is wound uponthecard' l5'fin' aiiy 40 j suitable winding machine, whereupon theinsiila- -'tion must'fbe' removed from the'wire l8 atthe edge I 6 for engagement by a "sliding contact'fo'rming a part'of the potentiometer. 'The' apparatus "of'the present invention provides an effective .Wn'leans for, accomplishing the removafofsii'ch insulation. y

'The'ap'paratus includes a base member-'12 on whichthe various'parts' of the apparatus are mounted. "This base member hasa'plateflztsuit- 5:): 'ably" secured thereto and. forming" a part ofa framework including end fr'ames 24 and'25. ""In- 'terposed between the endframes 24" and f2 5' is a "channel member 26 ."having "its lower "flange mounted ontheplate 23 and carryinga renew ".o'nits' uppernange. The table2'l"is aaaptedto support a potentiometer card I5 during the cleaning of the forward edge I 6 thereof. The end frames 24 and 25 extend upwardly beyond the table 2! and serve to support support plates 28 and 29. Secured to and extending between the support plates 28 and 29 is a channel member '30, on which a plurality of clamping assemblies, designated generally by the numeral 3|, are suitably mounted. All of the clamping assemblies 3| are of exactly the same construction and only one of them will be described in detail.

In each clamping assembly there is provided a pair of push rods 32, havin enlarged lower portions 33 and reduced upper shank portions 34. The lower portions 33 of the rod 32 are slidable in suitable apertures 35 formed in the lower flange of the channel member 30, whereas the reduced shank portions 34 of the push rods 32 are slidable in apertures 38 in the upper flange of the channel member 30. At their lower ends, the

push rods 32 are fixed to a clamping plate 31 having a suitable clamping pad 38 of resilient material, such as felt attached thereto. Seated on the shoulders formed at the juncture of the upper and lower portions of the push rods 32 are washers I 39, against which compression springs 48 bear. The compression springs 48 are interposed between the washers 39 and a cross plate 4 I, which is slidable with respect to the push rods 32, and is interposed between the springs 49 and collars 42 suitably pinned to the push rods. Intermediate the push rods the cross plate 4| has a pivot bearing 43 mounted thereon, in which a lever 44 is pivotally mounted. The lever 44 i pivotally interconnected with an actuating lever 45 by a link 46 and is interconnected with a stationary plate 41 by a pair of links 48. The stationary plate 41 is, in turn, mounted upon a bracket 49 fixed to the channel member 30. The stationary plate 41 is cut out to provide stops so that lever 45 can be positioned slightly below horizontal (Fig. 9) and slightly beyond vertical (Fig. 6), whereby the linkage will remain in either of its extreme positions.

These clamping assemblies 3| may be individually and manually operated to clamp potentiometer cards I5 on the table 21 under the pressure of the springs 48 under compression, the movement of the actuating lever 45 from the position shown in Fig. 6 through the position shown in Fig. 7 to the position shown in Fig. 9, serving to move the push rods 32 downwardly to carry the clamping pads 38 into engagement with the potentiometer card I5 on the table 21. It will be apparent, from a consideration of Figs. 6 to 9, inclusive, that, in either of its extreme positions, the clamping lever 45 will tend to remain in that position until moved manually therefrom.

In positioning a potentiometer card I5 on the table 21 to have the edge of it cleaned in the apparatus, a gage member is used to position the card for engagement by a pair of brushes GI and 62. The gage member 69 comprises an angle bar mounted upon the ends of a pair of levers 63 and 64 fixed to a shaft 65, which is journalled 1n journal blocks 66 fixed to the channel member 26 at spaced intervals along its length. The levers 63 and 64 have weights 6! and 68 at their free ends for counterbalancing the weight of the gage member 69 and the gage member may be held in either the position shown in Fig. 6 or the position shown in Fig. 9 by a pair of off-center spring assemblies 69. Each of the off-center spring assemblies 69 (Fig. 9) comprises a blo 10 pivotally mounted on an end of a post 1! and carrying a rod I2. The posts II are fixed to the levers 63 and 64 and the rod 72 extends through blocks 13 pivotally mounted on the end frames 24 and 25. A spring 14 is interposed between the blocks 70 and I3, whereby, when the levers S3 and 64 are moved from the position shown in Fig. 6 to the position shown in Fig. 9 or vice versa, the springs 14 will tend to hold the gage member 69 in either of these positions due to the engagement of the edge of the gage member with the web of the channel member 26 or the engagement of the lever 63 with a stop member 11 on the upper flange of the channel member 26.

In the operation of the apparatus, the gage member 60 may be moved to the position shown in Fig. 6 and a wound potentiometer card I 5 may be placed in engagement with it and clamped in place by the clamping assemblies 3!, whereupon the levers 63 and 64 may be rocked to the position as indicated in Fig. 9 to move the gage member out of the path of the brushes BI and 62. When the gage member 69 is in the position shown in Fig. 6, the weight 61 will open a switch I5 suitably mounted from the base 22 in position to carry its actuating button 16 in the path of movement of the weight 61, as will be explained more in detail in connection with the description of the operation of the apparatus.

Mounted on the base member 22 (Figs. 6 and 9) is a block 88 having a guide tongue 8| extending longitudinally of it for engaging the side walls of a guide slot 82 formed in a carriage 83. The carriage 83 is provided with wheels 84-84, which ride on the upper surface of the block 89 and serve to support the carriage 83 for movement longitudinally of the base member 22 parallel to the edge of the table 21. The block 89 has bearings 85 extending therefrom for rotatably supporting a feed screw 86, which is threaded into a travelling nut 8! extending from the carriage 83. The feed screw 86 is adapted to be driven by a motor and speed reducer unit 88 through a conventional gear train enclosed in a housing 89.

Mounted on the carriage 83 is a motor 90 having a driven shaft 9| carrying a drive gear 92, which meshes with a pinion 93 on a shaft 94. The shaft 94 is journalled in bearings 95 and 96 and carries intermediate the bearings a split, adjustable pulley 91 of conventional design, which may be adjusted to vary its effective diameter with respect to a belt 99 engaging it. A pulley 98 of the same construction as pulley 91 is mounted to be driven by the belt 99 and, by differential adjustment of the two pulleys, their effective diameter may be adjusted to change the speed of driven pulley 38. The bearings 95 and 96 are mounted upon a plate I90, which is provided with a pair of slots I8I and I02 for receiving shouldered studs I 93 and I94, the shanks of which are encircled by springs I85 and I06. The springs I95 and I96 are interposed between the heads of the studs and the upper surface of the plate I89 to resiliently clamp the plate I90 on the carriage 83. The plate I99 may be slid transversely of the carriage 83 by means of a locating screw I9? threaded into a bracket I 88 on the plate I 98 and rotatably supported in a bracket I99 on the carriage 83. The locating screw I9! is provided with graduations, as indicated at H9, for indicating the relative position of the plate I90 with respect to the carriage 83.

The pulley 98, with which the belt 99 is engaged, is mounted upon a shaft III journalled plates I I and ot engagement of the rotating; the appa'ra :zgsssgere in be'arings I I Z aIid- I i 3 nand'zicarrying the wire brush 6 I 'lhe bearings I12 and I I3 are secured to a support plate I I 5;"which may' be mounted i-n" spaeed'relaticrf to'the' plate i i3 Ii by- 'int'erposing spac'er pletes H 6 be'tween the 'upper s'urface of the-plate Itfi 'and the supportt plate 1 I5; thus to regulate the 'height'of the wire brush 6I for "a purpose I which win become apparent as=- the :de-

scri tion pro'gresses.

The' shaft 'BM asshownrn'ost clearlyinTFig; 3, -has a gear 1 I25 mountd 'on 'its' rig-ht 'end for engagement with a gear -I 26 on' -a' shaft I 21. The shaft lfl is journalled 'in bea'i-ingsi I28 andf I29 and carries interiii'ediate the 'bearings a pulley i ltapsimiiar -'to theipulley 91. The 'b'e'a'rirlgs I 23 I and I29 are mounted on apla'te' I3 i similar to-the -'p1ate we gand the' 'pia'te I 3 I may be adjusted with "respect to the'carriage' 83 by m'eans oi an" adjustment 5 Screw assembly 1 32 Of exactly the" same con'striiction as the" assembly provided for adjusting the plate 1 5 I39 with respectto the ca'rrlage. 'simiiariy, a belt I33; corresponding-to the belt 99, drives a pulley I34 en ai -shaft I35. The sha'ft l35, likethe shaft I! I; carries the wire-brush m anct'is mounteu in bearmgs I31 and 53s fixed to :4 a support plate i 39. -It \v'fli'be' notedg by'referehce to Fig i that -iahe supp'orfiplate ltfi is spaced from the pla'te I 3 l by a slightly i greater amount 'than -the "support' plate n5 is spaced from its ijlate I 59 a spacer plate 'I '4 El vrhich isslightly thicker -than-the spacer plate Ht. Thus the wire brush 62, which rotates in -the' d ection'indicated by-the arrow(Figs. tend 1Q) 'ei-ng slightly higher-than the -brush 6-!,="wi1lengage the upper edgeof 'the wire -''I 8 wound on the potentiometer cafid fi and will clean-theinsulation from' the wire a slight distance back from the edge It'of -the card lton the 'ueper surface, whereas-the 5 I rotating in "the direction of the arrows ZFigs. L -and will sweep upwardly andclean a small sectionofthebottomportion ofthe-windingof the wire I 8' and'*-wi11 Wipe"across'-the face 'ofthe wireat"the-edge lfi. lt should be noted that in 'cl'ear'iing the insulation fromthe'w'vires I 8 wounu on' very thin cards I 5, it may be possible to make: the'spacer plates- H5 and M0 of the :samesize,"-but, -'-in order toclean the insulation min -wire waned: on thicker-cardsQit may-be 'advi'sable to 'locate the wire bruSheS- EEI -and- EZ as shown in the drawings. i In addition to l the-f switch 7 operable--under control of the l'ever 63, the motor 90, which drives the wire bru's'hes fl and 52,-'is cont'rtilld by a pair of automatically operated-switches! be subplidto the motor "90 to drive the two I brushes 6 I- =and 82 after the larushes have' been suitably-adjusted as-to height -by placing spacer plates of 'proper thickness beneath the support it 539' and a'ftr' adjusting the depth brushes with 1 the =wire i 8 on the cards I 5 by manipulating the locating screws IN. When the brushes tl and "I52 are tus' is in: condition" f or op- 5 'e-ration aridy-ai'fter a potentiometer card I 5 has been locked in place on the-table ZT-by proper f' the claihping assemblies 8 I the aratus 'may be started by manipulationb operation of the" app removin the gagemember ifi from engagement With the card I5 'on the table 21 to permitswitch -15 to 'close (Fig. 2).

With' the control circuit in the condition *Sh0wn:in Fig; 2, momentary operation of starting switch' i wwill connect current from a source I48 through" closed switch 45 (closed upon-its release -byc=gage member 60), through normally closed 'stop switch I 43 switch I4 l in the-position-shown, normally clo'sed "upper "contacts of reversing =10 switch I45, norma1ly open (now closedllower contacts of switch l44,-winding of relay I46and =backto source 1'48; thus' to: energizerelay I46. "Upombeing momentarily energized; relay: I4B--w-i11 lock up'over 'its locking contacts *ov'era circuit -l5 from the source through the windingpthrough contacts I49, upp'er contacts of -'switch 145, s'witches I4I- and I43' in the position shownand switch'fi 'in'the" opposite position to that shown. When 'relay I 46 '-is"'energized; 'it will supply 'current to the-motor 88 from the source through its -contacts and to'drive the'motor-ina direc'tion to move the "carriage" 83 to the left; as shown'in Fig. 1. 'The carria'getii will continue to 'moveto the "left iFig. 1) untila cam" I50, suitably mounted 011 the carriage;'operates'the switch" IM to n'i'ove it from the position' shown in F-igx2 to engage- "ment withits lower contact. X When-switch" I 4 I is reversed, 'it'will break thecircuit to the lo'cking contacts "I 49 and" momentarily" supply our- 13-) rent from: the-source "I48; through switch 15, now closed;-througlr 'stop switch l43ylower contact of switch" I 4 i upper: contacts ofiswitch" I44 inthe position shown" switch 142; to the-winding of reIay -IM and 'baclr'to the source -I48. Inthis 35 --manner, relay "I41 will' be*energized to reverse the 'connectionsfrom-the source I 48 to the motor 88,= thusto cause the motor to run vin-the opposite direction. Momentary energization of relay I41 will complete a'lockingcircuit for the relay'from r-source I48= through" switch; now closed, stop -switch' I 43; locking contacts -I 5 I upper contacts of switch 244;: switcl'r 142, through the vvi'nding of :the'relayand baok-to the-'source448. Power -x'vi1l continue to be 1 supplied to v the :motor "83 41-3 through thecontacts' of rel-ay 141 until I the carriage 83 reaches the endw-of its t'ra'velto the i right :(Fig. 1) theieft' (Fig.3) where cam I50 will operate switch I 42 and stop-the operation 'of the= motor:88 aften the'earriage 83 'has returned 50 to= 'its -normahpos'ition. In the event that it is "desired-to stop the operation'of the apparatus at any -time, stop -switch I43 may be operated to -brealr any=existing circuitto'either the relays I46 or "I 4T and ii itis :desirecb to reverse the direc- --tion oftravelof the carriage 83; switch I may -be-operated momentarily 'to open: its upper contact and close its lower contact, thereby to supe ply- :po-wer im-momentarily energizing the relay l Q5? pwvhibh tvill then -lock=-u1:rover acircuit from 560 source" 48 through switch I 15 switch M3,: locki ing contacts liigeupper' contacts-of switch I44 and-"switch I42 and-"winding 'of i'elay I4'I back 'to' the: source I 4 3. "Thus; in the operation "of the appara-tua' momentary *Operation of the starting iss switch M4, if switch-l5- has been closed 'by mo'v- 'ng 171182 gage member' fiflout' of the; path of the brushes 'fii and 62,"w-ill initiate a cycle of operation 'which"will cause the carriage 83 to :move the full-length of the :card It and' back to its 0* starting. position "to remove' the insulation from i the wire' -wound 'on the card- I at the" edge? I 6.

":What is "claimedis:

1. An edge cleaning appai atus 'compri'sing means 'ror supporting an a'rticle tn za-n edge 5 3 thereof in a reoeter-mined position; a? gage-mem- PT I her mounted on said supporting means and movable to and from operative and inoperative positions and operable in said operative positions for receiving an edge of an article thereagainst to locate said edge in said position, edge cleaning brushes, a carriage for carrying said brushes along said edge, means for driving said carriage, means including a switch member for supplying power to said driving means, said switch member being actuatable by said gage in its operative position to render said means for supplying power inoperative, and individually operable means on said carriage for individually adjusting the brushes toward and away from said edge.

2. In an edge cleaning apparatus, a stationary table for receiving an article, the edge of which is to be cleaned, a gage, means mounting said gage for movement with respect to said table, means limiting the movement of said gage in one direction to an operative position to cooperate with said table for aligning the edge of the article in a predetermined position, means for clamping said article in aligned position on said table, means limiting the movement of said gage in the opposite direction to an inoperative position to expose the edge of said article on said table, a carriage, means guiding said carriage for movement parallel to the edge of an article in said predetermined position, reversible drive means for said carriage, means to move said carriage in one direction for initiating operation of said drive means, means operable by said carriage for reversing the operation of the drive means to move said carriage in reverse direction, means mounted on said carriage for brushing the edge of the article, and means responsive to said gage means in its operative position for rendering the drive means inoperative.

3. In an edge cleaning apparatus, a table having a straight edge, means for holding an article on said table with its edge portion arranged in overlying and parallel relation to the straight edge of said table, track means extending parallel to said edge of the table, a carriage movable along said track means, means for driving said carriage, a pair of brush supporting plates on said carriage, a rotary brmh mounted on each of said plates to rotate about substantially aligned axes parallel to said track means, drive means on said carriage including a motor for rotating said brushes in opposite directions, means individual to each of said plates for adjusting the position of the plates transversely of the carriage, and means for adjustably positioning each brush in spaced relation to its associated plate.

4. An edge cleaning apparatus comprising a carriage, means guiding said carriage for movement along a predetermined path, a pair of rotary brushes, means individual to each brush mounted on said carriage for supporting said brushes for rotation about axes in substantial alignment and parallel to the path of travel of said carriage, drive means on said carriage including a motor for rotating said brushes in opposite di rections, means for supporting an article with its edge parallel to the path of travel of said carriage and in position to be engaged by said rotary brushes, and means on said carriage for adjusting the brushes transversely with respect to the path of travel of the carriage and to the edge of the article.

5. An edge cleaning apparatus comprising a carriage, drive means for moving said carriage Cal along a predetermined path, a pair of rotary brushes, means individual to each brush mounted on said carriage for supporting said brushes for rotation about axes in substantial alignment and parallel to the path of travel of said carriage, drive means on said carriage including a motor for driving said rotary brushes in opposite directions, means for supporting an article with its edge parallel to the path of travel of said carriage and in position to be engaged by said rotary brushes, means for individually adjusting said rotary brushes transversely on said carriage toward and away from the edge of said article, and means for individually adjusting said brushes vertically on said carriage to regulate the relative height thereof.

6. An edge cleaning apparatus comprising a carriage, drive means for moving said carriage along a predetermined path, a table spaced laterally from said carriage and parallel to the path of movement thereof for supporting an article with an edge to be cleaned, a gage movable transversely of the table to and from an operative position adjacent said table and an inop erative position removed from said table and operable in said operative position to align said article with the edge thereof parallel to the path of movement of said carriage, means for clamping said article against said table, and means on said carriage for engaging and cleaning the edge of said article on said table in response to the movement of said carriage.

'7. An edge cleaning apparatus comprising a carriage, a rotary brush mounted on said car- F riage for rotation about its axis, means for rotating said brush, means guiding said carriage for movement in a path parallel to the axis of said brush, a table spaced laterally from said carriage and parallel to the path of movement thereof and having a surface in a plane parallel to the axis of said brush for supporting an article to be cleaned, a gage mounted for movement to and from an operative position on said table and operable in said operative position to align the edge of an article moved thereagainst in parallel relation to the axis of said brush and in position to be engaged by said brush, means for clamping said article in aligned position on said table, drive means including a motor for moving said carriage, and means including a switch for supplying power to said driving means, said switch being actuated by said gage in its operative position to render inoperative said means for supplying power.

8. An edge cleaning apparatus comprising a carriage, means guiding said carriage for movement along a predetermined path, a pair of rotary brushes, means individual to each brush mounted on said carriage for supporting said brushes for rotation about axes in substantial alignment and parallel to the path of movement of said carriage, drive means on said carriage for rotating said brushes in opposite directions, a table spaced laterally from said carriage and parallel to the path of movement thereof and having a-surface in a plane parallel to the axes of said brushes for supporting an article to be cleaned, a gage, means mounting said gage for movement transversely of said table to and from an operative position adjacent said table and an inoperative position removed from said table, said gage in its operative position serving to align the edge of an article positioned thereagainst parallel to the axes of said brushes, clamps for clamping said article on said table, means for adjusting said rotary brushes on said carriage transversely to the path of movement thereof toward and away from the edge of an article on said table, and means for individually adjusting said brushes vertically on said carriage to regulate the relative height thereof.

9. An edge cleaning apparatus comprising a carriage, a reversible drive means including a motor for moving said carriage along a predetermined path, means operable to start the drive means to move said carriage in one direction, means controlled by said carriage to reverse said drive means to move said carriage in the reverse direction, a rotary brush mounted for rotation on said carriage about an axis parallel to the path of movement of said carriage, driving means on said carriage for rotating said brush, a table spaced laterally from said carriage and parallel to the path of movement thereof and having a surface in a plane parallel to the axis of rotation of said brush for supporting an article to be cleaned, a gage, means mounting said gage for movement transversely of said table to and from an operative position adjacent said table and an inoperative position spaced from said table, said gage in its operative position serving to align the edge of an article positioned thereagainst parallel to the axis of rotation of said brush and in position to be engaged by said brush, means for clamping said article on said table, and means on said carriage for adjusting said brush transversely of said carriage and toward and away from the edge of an article on said table.

10. In an apparatus for cleaning a longitudinal edge of an elongated relatively flexible substans tially flat article, the combination of a table having a flat surface for supporting said article thereon, a gage having a gaging surface engageable with the longitudinal edge of an article to be cleaned, means pivotally supporting said gage for movement in a predetermined path relative to said table, means limiting the movement of said gage in one direction to stop said gage in an operative position adjacent said table and with the gaging surface positioned transversely of said supporting surface for aligning in a predetermined position the edge of an article moved thereagainst, a plurality of clamps arranged to engage said article at spaced intervals and clamp said article in aligned position against said table, a

means limiting the movement of said gage in the opposite direction to stop the gage in an inoperative position spaced from said table to expose the edge of said article, and means for holding said gage in either its operative or inoperative position.

11. An apparatus for cleaning a longitudinal edge of an elongated relatively flexible substantially flat article comprising a carriage, a rotary brush mounted on said carriage for rotation about its axis, drive means for rotating said brush, means guiding said carriage for movement in a path parallel to the axis of said brush, a table for supporting an article thereon, said table having a fiat surface in a plane parallel to the axis of said brush and a straight edge substantially parallel to the axis of said brush, a gage having a gaging surface engageable with the longitudinal edge of an article to be cleaned, means pivotally supporting said gage for movement in a direction transverse to said table,

means limiting the movement of said gage in one direction to stop said gage in an operative position adjacent said table and with the gaging surface positioned transversely of said supporting surface for aligning the edge of an article moved thereagainst in parallel relationship with the axis of said brush and in position to be engaged by said brush, a plurality of clamps arranged to engage said article at spaced intervals to clamp said article in aligned position against said table, means limiting the movement of said gage in the opposite direction to stop the gage in an inoperative position spaced from said table to expose the edge of said article, and means for holding said gage in either its operative or inoperative position.

12. An apparatus for cleaning a longitudinal edge of an elongated relatively flexible substantially flat article comprising a carriage, a rotary brush mounted on said carriage for rotation about its axis, means for rotating said brush, means guiding said carriage for movement in a path parallel to the axis of said brush, a table for supporting an article thereon, said table having a flat surface in a plane parallel to the axis of said brush and having a straight edge substantially parallel to the axis of said brush, a gage having a gaging surface engageable with the longitudinal edge of an article to be cleaned, means mounting said gage for movement in a direction transverse to said table, means limiting the movement of said gage in one direction to stop said gage in an operative position adjacent said table with the gage surface positioned transversely of said supporting surface for aligning the edge of an article moved thereagainst in parallel relationship with the axis of said brush and in position to be engaged by said brush, means to clamp said article in aligned position against said table, means limiting the movement of said gage in the opposite direction to stop the gage in an inoperative position to expose the edge of said article, means for holding said gage in either its operative or inoperative position, motor driven means for moving said carriage, and means including a switch for supplying power to said motor driven means, said switch being actuatable by said gage in its operative position to render inoperative said means for supplying power.

JEROME R. MARCUS. FREDERICK W. TURNER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 277,882 Carr May 22, 1883 492,451 Winkley Feb. 28, 1893 732,767 Metzner July 7, 1903 1,097,953 Vogel May 26, 1914 1,436,464 Sundh Nov. 21, 1922 1,448,518 Brown Mar. 13, 1923 1,588,542 Fox June 15, 1926 1,769,870 Traud July 1, 1930 1,887,571 Wilson Nov. 15, 1932 1,952,334 Robinson Mar. 27, 1934 2,180,570 Walper Nov. 21, 1939

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