US2651799A - Brush - Google Patents

Description

VW. A. L @MEARDEI BRUSH ATTORNEYS.

Filed Aug. l, 194'? epm H W53 W, A, LQMEARDH 296539799 BRUSH Filed Aug. l. 1947 2 Sheets-Sheet 2 INVENTOR. WILLI/XM A. LOMBARDI ATTORNEYS.

Patented Sept'. 15, 1953 UNITED STATES PATENT OFFICE BRUSH William A. Lombardi, Derby, Conn.

Application August 1, 1947, Serial No. 765,506

23 Claims. l

My invention relates to brushes, and in particuvlar to supporting means for brushes composed of one or more strip-type brush elements.

It is an object of my invention to provide an improved device of the character indicated.

lit is another object to provide an improved, adjustable, supporting and clamping means for more readily assembling a brush of the character indicated.

It is a further object to provide a supporting and clamping means for supporting a brush strip on a frame having a relatively smooth exposed surface, said brush being secured in substantially continuous supporting contact with said surface, in such a manner as to present substantially no sharp edges or pockets for the accumulation of foreign matter, such as lint or dust.

It is a general object to provide a simpler and less costly brush-supporting structure having features which inherently make for low-cost assembly in combination with brush elements, and for low-cost maintenance of assembled brushes.

Other objects and Various further features of the invention will be pointed out or will occur to those skilled in the art from a reading of the following specification in conjunction with the accompanying drawings. In said drawings:

Fig. 1 is a partly sectionalized View in elevation, illustrating a brush assembly in accordance with the invention;

Fig. 2 is an enlarged fragmentary sectional View taken substantially along the line 2.--2 of Fig. l;

Fig. 3 is an enlarged fragmentary plan view of cooperating elements in the middle of the assembly of Fig. 1;

Fig. 4 is an enlarged fragmentary side view of cooperating elements at an end of the assembly of Fig. 1;

Fig. 5 is a plan view of elements shown in Fig. 4;

Fig. 6 is a fragmentary end view of a modied structure serving the purpose of the arrangement of Fig. 2, but for a different type of brush;

Fig. 7 is a perspective view of an element of Fig. 6;

Fig. 3 is a perspective view of a further modification of the invention;

Fig. 9 is a fragmentary view of an assembly incorporating the device of Fig. 8, with parts shown in a rst relationship;

Fig. 10 is a view similar to Fig. 9, but with parts shown in a second relationship; and

Fig. l1 is a perspective view, illustrating a modification of the parts shown in Fig. 8.

Briefly stated, my invention contemplates novel means for assembling a strip-type brush element or a plurality thereof on a supporting structure. The supporting structure may be flat or, as in the forms to be described, a drum of wood, metal or other material. The brush strip may be secured to such drum by a clip having a longitudinally extending slot embraceably to receive the binding for the brush strip, with the bottoms of the slot preferably flush with the surface of the supporting frame. The securing means for securing the clip to the frame performs the additional function of clamping the walls of the slot against the brush binding so as rigidly to support the brush. Several forms of clips are described for supporting brush strips at their ends and at intermediate portions thereof. Modified clips are also described for supporting different types of brush strip.

Referring to Figs. 1 through 5 of the drawings, my invention is shown in application to a drumtype brush assembly of a type which may be particularly useful in brushing lint and other foreign matter from carding brushes or combs, as used in textile mills. The drum shown is formed with a sheet-metal tube l5 supported at the ends by cupped members i6 having central bosses il to be secured to a shaft I8, as by set screws I9. The cupped or flanged members I6 may be secured to the drum or shell I5 as described, but 1 prefer spot bran/:ing or welding. As the brush assembly is relatively long, it may be desirable to employ a further centrally located flanged or cupped member 2U, which may ride upon the Shaft i8. A plurality of strip-type brush elements 2| may be spiraled as shown and spaced in equal angular increments about the surface of the drum l5.

1n accordance with the invention, novel securing means are provided for holding the brush elements 2l erect and in a desired spaced relationship. Such holding means preferably comprises clips having generally arched portions with a generally longitudinally extending slot in each said arched portion. The longitudinally extending slot is preferably so formed as to embrace the binder 22 of the brush strips 2|. For the relatively long brush assembly shown in Fig. 1, I prefer to employ three brush-securing clips along the length of each brush strip 2i. Thus, there may be two end clips 23 and one intermediate clip 2li for a particular brush strip.

Figs. 2 and 3 illustrate in some detail a preferred form of the central brush clip 2li. The clip 24 will be seen to comprise a centrally arched portion having a longitudinally extending slot therein. Slot 25 is thus defined by two opposed arched portions 26 of the clip. As indicated above, the cross-section or longitudinal projection of the slot 25 is preferably such as to conform with the cross-section of the brush binder 22, which in the form shown is widest at the base, i. e.generally triangular, and characterized by converging sides. The oppositely positioned arched members 26 thus project toward each other effectively to narrow the opening of the slot 25. Preferably, the cross-section of slot 25 is slightly larger than the cross-section of the brush binding 22, so that the binding22 maybe relatively easily inserted endwiseintothe slot 25. The longitudinal ends ofl the archedportions 26 are preferably both joined by anchoring portions 21 which may be set in recesses or openings 28 formed in the supporting drum I5. In the form shown, the openings 28 are slotsto permit the slidable entry of theanchoring projections or `lugsZ'i, asby twisting the clip 24 from -thiedot-dash outlined position 29 tothe solidline position shown inFig. 8. Since the bottom edges defining the slot 25conform to the brush strip 22 and .thus represent the bottom edge .thereof,-I prefer that when clip 24 is positioned in slots A28, the bottom edges 20 do not project above thesurface of drum I5.

.In orderto sccurethe `clip -24 to the drum I5, screwmeans maybe employed effectively to compress the archedportions 26. In the form shown, a separatescrew. 3| is driven through each arched element 25, as through thehole 32, and the screws v3| .are threaded to the shellor drum I5. In the assembly shown in Fig. 1,.it will be appreciated .that a proper positioning of .the central supporting anged member 26 may provide .additional thickness of metal, as .at the flange 53, for a very secure .threading engagement ofthe screws 3|. Upon .tightening thescrews 3| the projecting .parts ofthe arched members 26 will be appreciatedas tightly .embracing the sides of the brush binder22 and .at the Sametime as clamping the .bottom of the rbrush binder 22 securely against thesurface of .the drum I5.

In a preferred form, in order to prevent accumulation of lint, as in pockets under the arched portions 2.5, I prefer to provide integral with the arched portion 26. a .skirt 33 flaring downwardly hso Aas .to hug the contour of `the drum. If desired, in order .to enhance the compressible resiliency .of .the clip .2.4, a number of relatively thin slits a3,4 4may be cut into the ,skirt 33, and it will be understood that even .when compressed in order to secure .the brush 2|, these slits 34 need not open so appreciably as .to form pockets for the accumulation `of lint .or the like.

In Figs. 4 and 5, I illustrate an end clip 23 for securing an end of a brush strip 2|. Again, the clip Y2 3 may b e said Vto comprise centrally arched portions 3 6 defining a longitudinally extending slot 31 embraceably to receive the brush binding 22, .The anchoring means 38 at one end of the clip 231s formed similar to the anchor lugs 21 ofclip 24, that is, the lug 33 may be bent for insertion into the slot 36 in the shell or drum I5. At the other end, the clip 23 includes a downwardly depending wall or bracket 4D to be secured as by screws 4| threaded into the end cup or flange member |6. In other respects the clip 23 may resemble the clip 24, as by provision of a skirt 42 on each arched portion 36, of slits 43 in skirts 42, and of openings such as the opening 44 in the arched portions for accommodation of clamping screws 45. It will be appreciated that the clamping effected by a take-up of screws 45 may provide a secure mount for the end of brush strips 2|, with the bottom of the brush binder 22 engaging the surface of the supporting drum or frame I5 for substantially the full length of brush 2 I.

In practice, it is convenient in iassembling a brush construction of the-kind shown in Fig. 1

vif all clamps 23-24 are first merely lightly d ,into the supporting framework. It will then oe-found relatively simple to insert a brush strip -221-rstthrough the slot 31 of an end clip 23, then through the slot 25 of an intermediate clip 24,

-andii'nally through the slot 31 of the end clip 23 at the opposite end. With the binder 22 vlightly* held in all slots, it VVisbut a simple matter to tighten` the end vscrews 4| and then 'to .anchor the binding, as by Vtake-up of screws 3l-45. When screws 3l-,4,5 `have been fully tightened, it will be understood not only that the brush strip is secured flush with the surface of -drum `I5 for .substantially its entire length, but that thereare no exposed pockets, sharp edges, or the like to serve for the accumulation of lint or other foreign matter.

In the remaining figures, I show howthe-principles of `my invention may be vapplied for the equally effective securing and mounting of Aanother type of strip brush 5 0. Brush 50 in the form shown is secured together by a binder V5| of generally U-shaped cross-section, and the core 52 is held in place by cam-like wedges orlugs 5,3 stamped `out and bent in from the sides ofthe binder strip 5 i.

lIn Figs '6 and `'1, I show,alclip- 54 generally similar to r v clip 24 ofthe nist-describedarrangeinent, but modified for appropriate support of the brush strip 50. 'Ifhe clip 54 may-thus comprise two generally arched portions 55 defining va longitudinally extending slot 56 conforming generally, and preferably with slight clearance, 4with the cross-section of the brush-binder 5|. In order to embrace the binder 5|, the arched portions 55 preferably include projections 51 projecting toward each other at the mouth of Vslot 56, eifectively tonarrow .the mouth of Vslot -56 and thus to overstanol parts of the binder 5|. In Fig. Ii, the projections 51 are shown clearing the upper edges of ,binder 5|, as at 53, prior to final take-up of the securing screws 59. It will b e appreciated that upon take-up of the securing screws 59, the projections 51 may abut the upper edges of the strip 5| so as firmly to seat the brush strip 56 within the slot 56. As in the case of the clip 24, anchoring lugs 60 may be formed at opposite ends of the clip 54 to engage slots 28 in the drum I5. Dustf-delecting skirts .6| may also vbe lgitted, as at 62, to provide a more resilient clip It will be noted that in the preferred form shown, the projections 51 which overstand edges of the brush binder 5| extend a substantial fraction of the total longitudinal length of slot 56, thus providing extended and substantial securing forces for holding the brush 5I) in place'.v If desired, for a still better anchoring, further projections 63 may be formed on the projections 5I, and the projections 63 preferably are directed downwardly, that is, toward the bottom of the slot 56. The projections 6 3 rnay clear the upper edges ofthe vbinder 5| when the bin-der 5|V is inserted in slot 56, but when the screws 59 are taken up the projection 63 preferably overhangs parts of walls of the binder 5I, as will be clear.

It will be understood that a brush strip having a binder such as the binder 5I may be secured at its end with an end clip generally similar to the end clip 23 but appropriately modified as exemplified in Figs. 6 and 7 to embrace the particular binder 5I. In some cases, however, it may be desirable for the brush 50 to overhang some of the support drum I5 and for the end support to be effective as near to the end as possible. In Figs. 8, 9, 10, I show a clip 65 which may suitably provide such end support for the case of brush 50 projecting beyond the end of drum I5. In the form shown, the clip 65 is a simple bracket having a first face 66 to be secured to the flanged or other plate I6 at the end of drum I5, and a second side 61 having a slotted opening 68, conforming preferably with slight clearance to the cross-section of the binder 6I. Side 6l may thus comprise a pair of projections, and the plane of these projections may be at an obtuse angle with the plane of the sides 66. The projections 61 may be formed with still further projections 69 serving, like the projections 63 of Figs. 6 and 7, effective to narrow the mouth of slot and to project generally downwardly in order firmly to lock the upper edges of the binder 5I. In the form shown, the projections 69 are supported by lugs 10 formed with the projections 61 and substantially at right angles with the plane of the side 66.

In assembling a brush 50 and clip 65, the clip 65 may be loosely held on drum I5, as by only partly threading the securing screw 'II in the manner shown in Fig. 9. The clip 65 then rests at an elevated angle with the projections 69 out of engagement with the upper edges of binder 5I. Alternatively, the binder may rst be supported on the drum I5 and the clips 65 placed over the projecting ends of brush 50 so to assure the relative positioning shown in Fig. 9. A takeup of securing screw 'II will be understood to drive the lower side 66 flush against the end plate I6 and at the same time to force the projection 69 into locking engagement with the upper edges of binder 5I, as will be clear from Fig. 10. I prefer that the angle between sides 66--61 of clip 65 be less when the clip is formed, than is its intended angle when tightly secured in place in the manner shown in Fig. 10. It will be appreciated that with such angularity a secure clip 65 may be resiliently stressed in a direction to compress the binder 5I firmly on the outer surface of the drum I5.

In Fig. 11, I show a simplified version of the clip of Fig. 8. The clip of Fig. 11 may comprise essentially two sides 'I2-I3 with a slotted opening 'I4 on one of the sides. The sides 'I2- 13 are again preferably Iat an obtuse angle, but the upper edges of the side 13 are formed with projections 'l5 converging toward each other at the mouth of slot 14 in order effectively to narrow the mouth of slot I4 and thus to provide a ledge for engagement with the binder 5I. It will be appreciated with a suitable selection of angles, a brush 50 may be held with substantially equal effectiveness by either of the clips in Figs. 8 and 11.

It will be seen that I have provided a relatively simple brush assembly relying upon sturdy and very easily fabricated securing elements. In all forms, a simple relaxing of a few screws will relax all clips to permit slidable removal of a brush strip, as for replacement. All structures may be very readily fabricated and yet provide protected and aligning support for holding a brush strip fully erect and, if desired, flush with a drum support for substantially the entire length of the brush strip.

While I have described my invention in detail for the preferred forms shown, it will be seen that modifications may be made within the scope of the invention as defined in the appended claims.

I claim:

1. In a device of the character indicated, a frame having a relatively continuous smooth Iouter surface, a brush strip having a binding to be secured on said surface, clip means including a unitary structure with jaws embracing opposite sides of said binding, and securing means for securing said clip means to said frame, said securing means being oriented to permit effectively drawing one of said jaws toward said surface so that said jaws may effectively squeeze said binding against said surface.

2. A device according to claim 1, in which said securing means includes a screw engaging a part of said clip means to urge one of said jaws toward said frame, whereby upon take-up of said screw said one jaw may be urged into tight securing abutment with said binding.

3. In a device of the character indicated, a frame having a part defining a brush-strip base, a brush strip having a binding to be secured to said frame and against said base, and a clip secured to said frame and having an opening embraceably to receive and engage opposite sides of said binding, the effective span of said opening in relation to its spacing from said base being less than the corresponding portion of the cross-section of said binder, whereby said clip will be in stressed engagement with said binder in holding the same against said base.

4. In a device of the character indicated, a drum, a brush including a binding to be secured to said drum, and a clip extending longitudinally of said binding and having a longitudinally extending slotted opening longitudinally and embraceably to receive said binding, said clip including means for securing the same to said drum. l

5. As an article of manufacture, a clip for securing a brush binding of the character indicated, said clip including anchoring members at opposite ends, and an arched portion between said ends, said arched portion having a longitudinally extending slot embraceably to receive said binding.

6. A device according to claim 5, in which the bottom of said slot is wider than the top thereof.

'7. A device according to claim 5, in which there is an opening in said arched portion and adjacent said slot, whereby a securing screw passing through said opening and entering a frame member may compress said arched portion and secure a brush element in said slot.

8. As an article of manufacture, a clip for a brush binding of the character indicated, said clip including at one end a portion to be anchored to a frame, and an arched portion extending longitudinally away from said anchoring portion, said arched portion having a longitudinally extending slot embraceably to receive a brush binding, said arched portion also including a downwardly extending skirt on said arched portion, said skirt defining with the bottoms of said slot a substantially continuous surface to fit the outer surface of the drum or other frame member on which said clip is to be mounted. A9. An article according toclaimf8, in which said arched portionhas openings on opposite sides of said slot tov receive securing screws. 10. A n article accordingto clai'm` 8,'in which relieving slits `'are provided in said skirt to enhance the resiliency Volf said arched" portion Without impairing the reffectiveness of said skirt to prevent the collection of foreign matter under said skirt.

11. As an article of manufacture, a brush clip including an arched central portion having a longitudinally extending slot, the longitudinal projection of said slot conforming more or less to the cross-section of a brush binding to be embraced'therein, the mouth of said slot in said projection being more narrow than the width of said slot at a location inwardly of the mouth, and securing means near said arched central portion.

l2. An article acording'to claim 11, in which said Yprojection ofKA said slotis characterized by opposite'walls converging toward the opening of said slot. 13. 'An article according 'to claim 11, in which in saidprojection the upper part of said arched portion includesa' projecting element projecting in a direction effectively tonarrow the opening of saidslot.

1 4. An article according to claim ll, in which opposite edges of said''slots at the upper portion thereof include elements projecting toward each other `eiectivelyto narrow the openingof said slot, and in which saidprojecting elements include further dependingv members projecting toward the bottom }of said slot for interlocking engagement with 'a' brush 'binder of the character indicated.

15. As an article ofv manufacture, a clip for a brush binder, said clip` comprising a bracket having a'rst side varida vsecond side at an obtuse angle with respect to each othenone of said sides having, a slot with substantially'parallel opposed walls toreceive'a brush binder,V said one side including portions at the mouth. of said slot projecting toward each other eiectively to narrow said slot Aat the-mouth.

16.,As an article o f manufacture, a brush Aclip comprising afbracket havingjtwosides'at an obtuse angle with respect Yto each `other,y one oi said sides havingvr a' slotted' opening to receive a brush binder, extensions 'on' said one side from the walls of ysaid slot and more'or'less at'a right angle with the "plane 'of the other of' s'aidsi'd'cs,

said extensions including portions extending'toward each other effectively to narrow lthe mouth of said slot, said portionsincluding a downwardly depending lo'cking projection.

17. In an assembly of the character indicated, a frame on which abound brush strip`is' to.'be mounted, a clip including an arched 'portion with a longitudinally` extending slot embraceably to receive tliebinder of said' brush strip, vand an anchoringfportion atan end offsaid clip. and joining the sides ofsaidf slot.

18. An assembly accordingr to claim- 17, inwhi'ch said'frame includesa sheet metalouter member attra-co upon whichsaifdbrsh strip is to 'be mounted, s'ai'df'sheet 'metal member having 'a slot to receive the anchoring portion 'of 'said strip.

19j A s'an article` 'of manufacture, a clip for securing the binder 'of a brush strip, said clip includi'ng anarehedpoitio'r'i having a longitudinally extendingslot"embraceably v'to receive a brush binder,` and an anchoring portion 'at one end of said clip," said anchoring portion being dened by a downwardly depending wall more or less at a` right ahglewith' the longitudinal axis of the brush to' be secured in said slot, and means for securing 'said'fwall to a frame.

20. In an assembly Vof the character indicated, a frame having a relatively smooth outer surface, a brushstri'p havinga binder,'and clip means for Securingsaid biu'sl'i` strip to said frame, said clip means incliidi'ngan arched portion having a longitudinally extending'slot 'embrac'eably to receive said binderi said' clipmeans including portions spanning the ends of 'said slot, said frame having recesses to receive said end portions, whereby the bottom o said slot may be substantially nosh with said relatively smooth surface, and securing means forfse'cu'ring said clip means to said fr'amejwhereby 'the binder of said brush strip may be secured' to said frame in substantially continuous Supporting abutment with the relatively smooth surface thereof.

2l. in a generally cylindrical brush assembly of the character indicated, a plurality of generally circular discs in spaced-apart relation, b'rif'li-strip receiving means supported by said 4and liar/ing angularly spaced generally outwardly opening slots therein, brush strips having elongatedbinders for bristles, veach said brush strip extending 'through a' plurality of said slots, retainingmeaiis incldingl'portions engaging the radially outer limits'of said binders and radially irnvar'd'ly stressed 'so as to hold said binders radally inwardly and located in 'said slot openings.

22. A brush assembly according to cla-im 21, in which' saidmeans embracing the outer limits of said' binders comprises clips with means for driv- 'the same radiallyiiiw'ardly toward said discs.

23. In abr'ush assembly of the character indicated, ari-'elongated relatively continuous generally cylindrical supporting structure, longitudinally spaced brush-receiving means on said structure and having angularly' spaced generally 'outwardly opening slots, corresponding slots 'being in general" alignment with each other,

brush stripshaving' elongated binders for bristles extending.' "through" said: aligned slots", and retaining means includingporitions engaging the radially outer l'im`its`of said binders andl radially inwardly' stressed so as to liol'd said binders radiallyinwardly andA located said slot openings.

wim-IAM A. LOMBARDI.

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