US2167949A - Wide brush section - Google Patents

Description

Aug. 1, 1939. L. c, HEROLD WIDE BRUSH SECTION Filed June 13, 1936 2 Sheets-Sheet l PEG-3B Aug. 1, 1939. L. c. HEROLD WIDE BRUSH SECTION Filed June 13, 1936 2 Sheets-Sheet 2 Patented Aug. 1, 1939 UNITED STATES PATENT OFFiCE Application June 13,

6 Claims.

This invention relates to an improvement in rotary brushes and more particularly to a novel structure for a Wide brush section.

Wide rotary brushes are often built up from thin individual sections assembled upon and secured to the shaft by which they are rotated. These brush sections are generally thin so that a large number of them must be assembled on the shaft to provide a brush of the length usually desired in the Various industrial processes where such brushes are used. One of the objects of the present invention is to provide thicker or wider brush sections so that a smaller number need be handled in assembling sufficient brush material along a shaft to provide a brush of a given length.

Another feature of my invention is the provision of novel structural members for assembling a plurality of bristle rings into a single unit for further handling.

My invention also provides novel features in the mounting of bristle sections whereby mounting plates of a given size may be utilized in the formation of brush sections adapted to fit shafts of varying diameters.

Other novel features of my invention will be apparent from the accompanying specification and drawings and the essential features thereof Will be summarized in the claims.

In the drawings, Fig. l is a plan vieW of a brush section embodying my invention; Fig. 2 is a sectional view along the line 2-2 of Fig. 1; Figs. 3A, 3B, 3C, 3D and 3E. show the structure of Fig. 2 in disassembled position; Fig. 4 is a View similar to Fig. 2 showing a modification in which the relationship between the bristle rings and the side plate mountings has been varied to change the internal diameter of the section; while Figs. 5 and 6 show a modified form of brush section before and after assembly.

My invention relates broadly to a mounting for a plurality of bristle rings side by side in axial bristles.

aiinement regardless of the details of construction of the individual bristle rings. For instance in the embodiment shown, bristle rings 5 l and ii are assembled in a unitary structure by means of plate mountings but I do not desire to be limited in the particular type of bristle ring utilized in forming wide brush sections other than by the appended claims when construed in view of the prior art.

The brush sections it and i2 each comprises a central ring i to, l 2a about Which is looped bristle material Mb, 5279, which in the present instance composed of a large number of individual However my invention contemplates 1936, Serial No. 85,085

that bristle tufts or knots or other form of bristle assembly might be incorporated in my invention if desired. The combination of the rings Ma and lZa with the bristle material looped thereabout as shown in Figs. 3B and 3D I have referred to hereinafter in both specification and claims as a bristle ring or brush section.

The mounting means for the bristle rings or brush sections comprises a plurality of plate members l3, l4, E5 of which the plate member it lies between adjacent bristle rings in engagement with both of them when the brush is assembled, and the plates i3 and i5 engage the outer surfaces of the bristle rings so that the three plates provide a pair of plate members engaging each side of each bristle ring with the plate It form ing a common member of each pair. The additional plate member necessary to engage the outer surface of the second bristle ring is suitably secured to one of the side'plate members forming a mounting for the first bristle ring so that I build up the bristle rings by securing the mounting of one to the mounting of the other utilizing a portion of one bristle ring mounting to provide a part of the mounting for the second ring. In other Words, I do not simply form a plurality of bristle rings each with its individual side plate mounting members and thereafter secure them together, but I achieve the simplicity, cheapness and lightness possible by utilizing one side plate mounting to form a portion of the bristle ring mounting structure for two diiferent brush sections. Preferably the means for securing the various plate members together comprises tongues struck up from one member of the pair of plates on opposite sides of a given brush section, these tongues being bent at right angles to the plate and extending toward and beyond the coacting plate member and there bent down on the coacting plate member to clamp two plate members together on opposite sides of a brush section.

In the forms shown in Figs. 1 to 4 the securing tongues for the brush sections it and i2 are both struck up from the plate member i i. One half of these tongues indicated at Ma are bent toward the plate member l3 and the other half it?) are bent toward the plate member l5. In assembling the brush the tongues ita pass through the bristle material lib to a point beyond the outer face of plate member I i! to clamp the bristle material I lb between plates l3 and M as shown in Fig. 2. In a like manner the tongues Mb pass through the bristle material l2b beyond the outer face of plate member 15 and are then bent radially outward and clamped against the outer face of plate member I to clampingly secure the bristle ring I2 between the plates I4 and I 5. This is best seen in Fig. 2.

By thus providing tongues bent outwardly from one of the side plate mountings of a brush section I may add to that brush section a second section by the addition of only one other side mounting plate. In the form illustrated I have thus joined together two brush sections but it is obvious that by providing additional tongues on the plate member I5 extending toward the right as seen in Fig. 3E in a manner analogous to the tongues Mb, I might continue to .add a third bristle ring to the combination by the use of only one additional side mounting plate.

A modified form of mounting is shown in Figs. 5 and 6. Fig. 5 is an explosion view showing the parts in position for assembly and Fig. 6 shows the same parts completely assembled. Here plates 22 are identical annular metal rings each provided with tongues 22a struck up from their inner peripheral edges. Each ring is rotated relativeito the preceding one in the series so that the tongues of one ring are staggered between the tongues of the next ring in the series. Each pair of plates 22 forms a mounting for one of the brush sections23. Obviously, as many units as desired may be secured together in this manner. On the outside of the last section 24 in the series is placed a plain annular ring 25 like I5. When the brush sections are assembled as shown in Fig. 6 the tongues of each plate extend through the brush material of the adjacent brush section and are bent down upon the next plate in series to hold a pair of plates together.

It will be noted in all forms of my device illustrated that the plate members I3, I4, I5 and 22 are annular in form with tongues struck up from the inner peripheral edge of one of the plate members, these tongues being extended through the adjacent brush material and bent over upon a coacting side mounting plate to clamp the brush material between two plates. It will be noted that the tongues I la, I4b and 22a also provide securing means for the rings Ila, l2a, 23a and 2411 as. they engage these rings upon their outer circumferences so as to position the rings Ila, I2a, 23a and 24a centrally of the plates I3, I4, I5, 22 and 25. In the modification shown in Fig. 4 the tongues Ma and Nb engage the inner edge of rings I6 and H (which here perform a function similar to that of rings Ila and I2a) and here again the tongues provide centering means for the bristle rings.

It will be noted that as between Figs. 2 and 4,

the rings I la and I2a in Fig. 2 lie radially inward-' ly from the tongues I la and Nb, whereas in Fig. 4 the rings I6 and I! lie radially outwardly of the tongues. I vary the construction of my brush sections in this manner to change the internal diameter of the brush section so that the section of Fig. 2 is adapted to fit a shaft I8 of smaller diameter than the shaft I9 of Fig. 4. This variation is accomplished by making the annular plate members I3, I4 and I5 with central openings of greater diameter than the shaft to be accommodated and making the rings I6 and IT with the same internal diameter as the openings in the annular side plates where a large shaft is to be accommodated similar to that shown at I9. In this event the bristle material of the brush 7 sections 20 and 2| where it is looped about the rings I6'and l'l radially inwardly therefrom engages the shaft I9.

On the other hand, in the form shown in Figs. 1, 2 and 3, the rings Ila and I2a are of less diameter than the openings in the annular side plates but of greater diameter than the shaft I8 to be accommodated. This brings the bristle material Ilb and l2b farther toward the center of the brush section when the brush is assembled, as shown in Fig. 2. In other words, as. compared with the structure of Fig. 4, we now have lying inwardly from the tongues Ma and MD the thickness of the rings Ila and I2a plus the thickness of the bristle material looped about these rings so that the internal diameter is reduced to fit the smaller shaft such as that indicated at I8.

It will be obvious that by substituting in Fig. 2 rings of proper diameter but of greater radial thickness than the rings Ila and l2a, for instance the flat rings shown at I6 and H but of smaller diameter, that the diameter of the final central opening of Fig. 2 could be still further reduced. I am thus able to utilize side plate mounting members of a given dimension for an assembly of brush sections having different internal diameters for assembly on shafts of different diameters.

What I claim is:

1. In a rotary brush, two annular rings of bristles, a single plate member between said rings and engaging one side of each ring, two other plate members, one engaging the other side of each ring, and means for clampingly securing said two other plate members against each ring respectively and against axial movement away from said first named plate member.

2. In a rotary brush, two annular rings of bristles placed side by side and axially alined, three plates, a single plate between said rings and directly engaging the bristles of each ring and one on the outside of each ring, whereby to form a pair of plates for mounting each ring of which one plate is common to the two pairs, and means for clampingly securing each pair of plates together, said means including tongues struck up from one plate of each pair and said tongues extending toward and beyond the other plate of the pair and being there bent down upon said other plate.

3. In a rotary brush adapted to be mounted on a round shaft, a pair of plates, there being central circular openings through said plates of greater diameter than said shaft, a ring having a diameter intermediate the diameters of said shaft and of said openings, bristle material looped about said ring, means for securing said plates together on opposite sides of said bristle material and for holding said ring centered in said openings, and said bristle material when looped about said ring being sufficient to fit the central opening to said shaft.

4. In a rotary brush adapted to be mounted on a cylindrical member, a pair of annular plates, there being central openings in said plates of greater diameter than said cylindrical member, a ring of bristle material, and means holding said bristle material between said plates in a manner to extend into the central openings thereof in direct engagement with said cylindrical member.

5. In a rotary brush, two annular rings of bristles, a single plate member between said rings and engaging one side of each ring, two other plate members, one engaging the other side of each ring, tongues struck up from said first named plate member, and said tongues being bent in opposite directions toward and beyond said 7 l0 radially outwardly of said ring and passing through said bristle material, and said tongues extending beyond the other plate and being there bent down upon said other plate to clampingly secure said material between said plates, whereby said ring is held against movement radially outward by said tongues and said bristle material is uninterrupted between said annular plates and radially outward therefrom.

LAWRENCE C'. HEROLD.

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