US2379205A - Brush construction and mounting therefor - Google Patents

Description

June 26, 1945, D. F.\ o. WESEMEYER 2,379,205

MOUNT I NG THEREFOR BRUSH c Filed Sept. 12, 1942 3 Sheets-Sheet l June 26, 1945. N D. F: o. WESEMEYER 2,379,20

BRUSH CONSTRUCTION AND MOUNTING THEREFOR Filed Sept. 12, 1942 3 Sheets-Sheet 2 INVENTOR.- \I

ATTORNEYS.

June 26, 1945. D. F. o. WESEMEYER 2,379,205

BRUSH CONSTRUCTION AND MOUNTING THEREFOR Filed Sept. 12, 1942 3 Sheets-Sheet 3 INVENTOR.

Patented June 26, 1945 BRUSH CONSTRUCTION AND MOUNTING THEREFOR Dietrich F. O. Wesemeyer, Euclid, Ohio, assignor to Spiral Brushes, Incorporated, Cleveland, Ohio, a corporation of Ohio Application September 12, 1942, Serial No. 458,163

8 Claims.

This invention, as indicated, relates to a brush construction and mounting therefor. More particularly, it comprises a brush unit formed as a coil or spiral type, and preferably hasthe end faces thereof brought into parallelism with each other. The invention also includes the formation of spiral brush units adapted to be assembled on a sleeve, mandrel or other type of support, and held firmly upon such support for rotation against the work. It also includes a brush construction wherein the active brush elements may be renewed from time to time or replaced with units of lesser or greater Width, as may be required for certain types of work, so that work of great width can be operated on when required, or the brush area reduced in proportion to work of lesser width so that needless waste of brush material will be avoided.

The principal object of the present invention is to provide cylindrical brush units preferably formed of spirally wound type and mountings therefor permitting adaptability of such unit for work of various types and ready replacement of parts subjected to wear.

Another object of the invention is to provide a brush construction of low cost and high efficiency adapted for industrial use under severe service conditions, and having features permitting easy installation and replacement.

Anotherobject of the invention is to provide a spiral brush constructionhaving fiat parallel end faces and securely engaged upon a sleeve in a manner permitting rapid construction at low cost.

Another object of the invention is to provide a spiral brush construction, the ends of which are formed into rings of predetermined size and the intermediate portions of which are held in firmly pressed relation to each other so that brushing operations may be carried on at highv speed and with uniformity of action upon the material operated on.

Another object of the invention is to provide spiral brush units with mounting sleeves firmly connected therewith, such sleeves being adapted for interlocking engagement with each other and with the supporting drive shafts on which they are mounted.

Other and further objects of the invention will appear in the course of the following description.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims, the annexed drawings and the following description setting forth in detail certain structures embodying the invention, such disclosed means constituting, however,

but several of various forms in which the principle of the invention may be used.

In the said annexed drawings:

Fig. 1 is a side elevation, broken away in part, of a brush construction embodying the features of the invention, and showing a central vertical section adjacent one end, as seen along the line l-i shown in Figure 2;

Fig. 2 is an end view of the structure shown in Figure 1;

Fig. 3 is a side elevation, partly in section, showing a brush construction along the lines of the unit shown in Figures 1 and 2 and mounted on a polygonal shaft in clampin relation thereto so as to provide a unit for high speed operation;

Fig. 4 is a sectional detail view of the polygonal shaft and the engaging portion of the brush structure as seen along the line 44 shown in Figure 3 looking in the direction of the arrows;

Fig. 5 is a side elevation, partly in section, shOW- ing the internal and external construction of a brush holding sleeve provided with inwardly displaced areas forming internal lugs in the sleeve for engagement with an hexagonal shaft;

Fig. 6 is an end View of the structure shown in Figure 5 showing the lug members at the ends of the sleeve in outwardly turned or locking position;

Fig. '7 is a fragmentary view of one of the inwardly displaced areas of the sleeve providing internal lug members as seen along the line l-'l shown in Figure 5 looking in the direction of the arrows;

Fig. 8 is an end view of a sleeve formed with inwardly displaced areas so positioned as to engage over a, shaft of square cross-section;

Fig. 9 is a view similar to Figure 8 showing the sleeve as provided with inwardly displaced areas adapted to fit upon the shaft octagonal in crosssection;

Fig. 10 is a fragmentary sectional view showing a brush construction adapted to be fitted upon a sleeve or shaft by means of holding lug members engageable with the support and with the marginal areas of the brush structure adjacent the respective ends thereof; p

Fig. 11 is an end view of the structure shown in Figure 10, the brush structure shown in said figures being of the buffer type;

Fig. 121s a fragmentary detail view showing a modified typev of locking tab adapted to hold a brush unit upon a sleeve;

Fig. 13 is a fragmentary view showing another form of modified locking tab adapted to hold a brush on a sleeve or similar member;

Fig. 14 is a perspective view illustrating the manner of folding or twisting a buffer strand and stitching the same to provide material for a buffing brush for heavy duty service:

Figures 15 and 16 are fragmentary perspective views showing respectively, terminal and intermediate clamping claw plates adapted to be placed on oppositesides of a tubular support to firmly.

hold the spiral brush unit in engagement therewith.

Fig. 17 is a side elevation, partly in section wherein combined supporting sleeve sections hav, ing clamping claw flanges are provided to support replaceable brush units; and;

Fig. 18 is a side elevation partlyinsectionh showing a replaceable brush unit mounted on a.,. supporting sleeve unit provided witha clamping claw flange, and a clamping ring provided with claw elements and providing a transferable ,unit,

for engagementona drive shz a ft.v

The various figures of the drawings allrelate to brushing units of u the coil or spiral type and the mountings therefor, wherein economy of operation may 'be obtained through assembling the brush units in widthspr p rtiOned to thewidths of the worh to be operated on and also in provid-' ing for the ready replacementof brushing units upon the operating shaft or mandrel so that a minimum of time is required for replacement-in continuous industrial operations.

The construction illustrated isadapted for narrow width, high speed, brushing units formed of wire of speciai characteristics for the work in hand, and @150 for units of specifically greater width, iin cluding those of extremely wide width for certain scrubbing or finishing operations at somewhat slower speeds than thebrushes of narrow width. In each instance the brushing units are provided with clamping means to insure the coils' being of suitable sizes to engage the shafts or mandrels upon which they are to be mounted.

Asclearly shown in Figures 1 to 6, inclusive,

the invention comprises a brush unitl formed of a channel strip 2 having brushing elements 3"- engaged about a holding wire 4 and wound into original positionand serveto lock the unit firmly upon the sleeve, having securing pins ID. In-order to have the sleeve interlockingly engage a shaf t of rectangular, cross-section, shown as an hexagonal shaft ll in Figure 3, the sleeve is provided with a pluralityof inwardly displaced areas i2, at suitably spaced points around the circumengaged. Where a sleeve is to engage a square shaft the lugs l3, preferably four in number, are positioned in staggered relation around the sleeve presenting a rectangular central opening, as shown in Figure 8. Another polygonal form of interlocking arrangement is shown in; Figure 9 wherein the lugs I 4 are likewise staggered in space and slightly inclined around the sleeve so as to provide an opening of octagonal outline to engag upon an octagonal shaft. In order to permit a manufacturer to replace a new unit for brushing purposes upon a sleeve carrying a worn out brush, thesleeve may be formed as shown in Figuresalo to=13,wherein demountable holdin tabs. I are utilizedto hold the brushing unit uponvthe, sleeve in th form illustrated in Figures 10 and 11. The holding tab comprises an elongatedmember bent upwardly at its outer end and downwardly at its inner end. A secureanchor.- age of the tab to the channels hold ing thebrush unit may beobtained by forcing asteel pin 16 throughthe outer marginalarea of the tab and throughthe adjacent upper margins of th ,coils of the channel member ll.' In place of using a demountable tab of the type shown in Figure 10, the tab 18 may be formedas shown in Figure 12 wherein a hook member I9 is provided, said member engaging throughan elongated slo't 20in the sleeve, being forced outwardly into locking en-. gagement withia reduced portion of the sleeve 2| at the bottom of a channel 22 within which the tab is slidingly engaged. When the brush unit is in position upon the sleeve just described it may, be mounted upon a shaftby means of a beveled clamping member 23 engaging the end thereof, the sleeve preferably having a beveled end portion 24, to cooperate with the beveled surface of the clamping member, Thedemountablc tab 25 shown in Figure 13 is formed with a hook member 261 and is substantially the same shape as the demountable tab l8 shown in,Figure 12. It is mounted on a sleeve 21 of heavier gauge and the hook portionthereof does. not project below the inner surface of the sleeve by reason of a channel 28, being provided on theunder side of the sleeve at the point where a channel 29 is provided on the upper side thereof to receive the demountable holding tab; The hook ,member is a d throughjan elongated slot 30 formed in tabs are bentoutwardly at right angles to their ference of the sleeve so as topresent an internal arrangement of lugs combining to form an hexagonal area withinthe sleeve orlockingarrangement with the shaft.

The depressed areas I2, as shown in- Figure 7 form'the lockinglugs on the internal surfac of the sleeve, and said "depressions are preferablym a a ht, a g e a t P o i greater interlocking capacity on th part of 'the sleeve when engaged anathema-1.

The position of the lugs willpe changed in ac,-. cordance with the cross-section of the shaft to be the sleeve in spaced relation to the end. portion thereof.

When the brushunit is engaged upon a sleeve of the character shown in Figures 10 to 13, inclusive, th tab. members at oneend may be preforinedso as tobe positioned at right angles to the axis of the sleeve, and the remaining tabs may be struclg up into clamping position as soon as the brush unit is mounted upon the sleeve. When the brush becomes worn and has to be discarded the struck upportionsof the tabs of the unitmay be forcibly" displaced from clamping relation and a new ,unit' substituted with a new series of demountable tabs toholdthe substituted brush unit in positionupon thesleeve, The unit whether formed with integral tabsas shown inFigures 1, 2,3,5 and 6, or whether formed with mm as shown in Figures 10, :11; 12 and i3; is preferably heldin clamping relation upon a shaft by means of recessed end washers 3| :securely clamped into position by, means of clamping nuts; 32. The

shaft I; shown in'Figure 3, is of hexagonal out-- line, and the sleeve has the inwardly displaced lugs lz adapted to'engagethe respective surfaces of the hexagonal area of the shafts; A screwthreaded portion of the shaft at each endpermits the clamping nuts 32 to be firmly held against the recessed Washers 3|, which, as shown in Figure 3, overlap the end portions of the channel strip 2 at the respective ends of the brush unit. In order to provide a high speed buffer unitfor heavy duty service, I form the strands 33 in the manner shown in Figures 10, 11 and 14, wherein strips of muslin, or similar suitable buffing fabric, are turned in at each marginal edge toward each other and folded several times, shown as three in number in Figure 14. The strands with the folded marginal areas are then twisted to one side or the other, shown as twisted in counterclockwise direction in Figure 14, and are then held in such position by means of a lock stitch seam providing marginal stitches 34, as shown more particularly in Figure 14.

When roller brushes of extended width are used, particularly those mounted on a tubular sleeve and formed as a single unit extending the full width of the work it is practical to secure such single unit on the tubular support by means of claw clamps of the character illustrated in Figures 15 and 16. The tubular support is usually of considerably greater length than the width of the work, and provides free end areas to which the clamping claws may be secured.

The supporting tubular shaft is then mounted on the driving shaft in any preferred manner, such as by means of beveled clamping members of the type illustrated in Figure 12 of the drawings. The brushing units referred to are usually formed of Tampico, or of buffer material, and are rotated at much slower speed than the narrow wire brushes used for removing scale and the like. The tubular support 4| is preferably provided adjacent each end with one or more apertures 42 which may be counter-sunk-at their inner ends to receive a bolt 43 which engages through a central aperture in the terminal claw plate 44, as shown in Figure 15, or in an intermediate claw plate 45, as shown in Figure 16. It is to be understood that where a roll type spiral brush unit 46 is to be secured on a tubular support 4| the spiral unit is slidingly engaged upon the tubular support, and the end portion of the spiral unit is engaged by the terminal claw plate 44 in the manner disclosed in Figure 15. The claw plate is secured by means of the bolt 43 extending upwardly through an aperture in the tubular support and is firmly held in position by means of a nut 41. The base of the claw plate is preferably curved upon a radius identical with that of the tubular support, and adjacent the channel strip 48 is provided with a number of claws for engaging said channel strip. The claws shown in Figure 15 are three in number, two of the claws 5| being of a height sufiicient to permit their gripping terminals to bear against the upper edge of the channel strip intermediate the tufts of brushing material clamped therein. The brush structure is formed in the manner heretofore described and has a holding wire 53 centrally of the channel strip. In the form illustrated in Figure 15 the holding wire is bent upon itself so as to enter a depression 54 formed in the adjacent claw member 55. The terminal portion 56 of the claw member bears against the end portions of the channel strip, the claw thus serving to hold the brushing unit against movement toward the right by reason of the engagement of the holding wire with the claw 56, or to the left by reason of its engagement with the extreme end of the channel strip. A claw member of identical construction with the claw member shown in Figure 15 is used at the longitudinally opposite end of the roller brushing unit to similarly engage a clamp with the free end of the channel strip at such point.

v The companion clamping units, or claw plates, for the two terminal units just mentioned are formed with a series of claws 51, shown as three in number, each of said claws having their terminal portions 58 engaged over the top edge of the channel strip 48. plates 45 are of substantially the same construction as to their body portions as the claw plates 44 heretofore described, and are held in position by a bolt 59 and nut 60 extending through an aperture in the tubular member 4| at a point preferably diametrically opposite the terminal claw plates heretofore described. If desired, sev- I eral intermediate claw plates may be placed about the tubular support member to insure the particular engagement of the end portions of the roller brush structure with the tubular support.

The claw type of clamping means just described permits brushing and polishing operations to be carried on Very efficiently at a minimum of cost.

The brushing units are readily detachable from the tubular supports, and the tubular supports themselves are readily detachable from the driving shaft. As soon as a brush becomes worn, or in need of trimming, it may be easily removed and replaced by a brush suited to the work in hand. It is desirable to employ a brush of practically the width of the work to be finished in order that the wearing down of the strands or fibres of the brushing unit may be distributed evenly about the entire active surface of the brushing unit.

The use of claw clamping units may also take various forms wherein an enlarged hub for the brushing unit is provided where brushes are to be engaged upon shafts of relatively small diameter.

In the type of structure illustrated in Figure 17 the clamping of the unit upon the shaft is accomplished through the use of two sleeve'members El, 62, the sleeve member 6| bearing against a shoulder 63 on the drive shaft 64. The sleeve members may be made of cast metal or the like and provided internally with hollow areas 65 in order to make them of less weight. Each sleeve member is provided with an upstanding flange 66 with internally projecting teeth or claw members 67. The outer sleeve section 62 is preferably provided with a central hub or extension 63 against which a locking ring 69 may be brought into pressure relation. The locking ring is internally screw-threaded to engage a screwthreaded area II on the shaft and may be operated by a spanner wrench engaging in the recesses 12 provided therefor about the periphery of said ring.

The replaceable brush units 73 engaged within the sleeve section just mentioned are preferably made of a width slightly greater than the width of the two sleeve sections when brought into abutting relation with each other, thus allowing an intermediate space or area 14 between the The intermediate claw ing wire and having elements intermediate the brushing strands thereof for clamping said brushing unit upon said supporting member.

7. An apparatus of the character described having in combination a brushing unit formed of a channel strip carrying brushing strands engaged around a holding wire within said channel strip and wound to spiral form, at least one supporting member engaged within said unit, annular means associated with the respective ends of said supporting member for engaging at spaced intervals against the end faces of said brushing unit and overlapping the outer face only of the outer channel strip area of said brushing unit to a position above the plane of the holding wire and having elements intermediate the brushing strands thereof for clamping said brushing unit upon said supporting member, and means for mounting said supporting member upon a driving shaft.

8. An apparatus of the character described having in combination a brushing unit formed of a channel strip carrying brushing strands engaged around a holding wire within said channel strip and wound to spiral form, a tubular supporting member engaged Within said unit, annular means associated with the respective ends of said supporting member for engaging at spaced intervals against the end faces of said brushing unit and overlapping the outer face only of the outer channel strip area of said brushing unit to a position above the plane of the holding wire and having elements intermediate the brushing strands thereof for clamping said brushing unit upon said supporting member, and means for mounting said supporting member upon a driving shaft and for clamping said supporting member against the end faces of the brushing unit.

DIE'IRICH F. O. WESEMEYER.

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