US2455099A - Buffing wheel - Google Patents

Description

Nov, 30, 1948. L, M. SEELENFREUND 2,455@99 BUFFING WHEEL I 2 Sheets-Sheet 1 Filed Sept. 8, 1947 4 I fiZUGTZ/O/J loam ff. 596/97? rezz/zd NW. 30,, 19%. L. M. SEELENFREUND fi BUFFING WHEEL 2 Sheets-Sheet 2 Filed Sept. 8, 1947 Patented Nov. 30, 1948 BUFFING WHEEL Louis M. Seelenfreund, Chicago, IlL, assignor to Action Buffs, Inc., Chicago, 111., a corporation of Illinois Application September 8, 1947, Serial No. 772,800

1 Claim.

The present invention relates generally to buffing wheels. More particularly, the invention relates to that type of bufiing wheel which is adapted to be fixedly mounted on a power driven shaft by way of a hub structure, serves during drive of the shaft and while a metallic or other surface is placed against its outer periphery to effect polishing or buffing of the surface, and comprises a rectilinear series of side by side buffing sections each of which consists of a plurality of annular juxtapositioned fabric layers with gathered or pleated inner margins for ventilating purposes, and a metallic ring-shaped core for holding the layers together and supporting them with respect to the hub structure.

One object of the invention is to provide a buliing wheel of this type which is an improvement upon, and has certain inherent advantages over, previously designed wheels and is characterized by the fact that the core of each buffing section is of two-piece character and consists of a pair of complemental pre-formed oppositely positioned rigid rings each of which is in the form of a metallic stamping and embodies a cylindrical base flange, an annular outer side flange extending outwards from the outer margin of the base flange, and layer-gripping teeth on the outer margin of the side flange.

Another object of the invention is to provide a bufiing wheel oflthe last mentioned character in which the cylindrical base flanges of the rings constituting the cores of the bufing sections are shaped to receive one another telescopically to the end that the cores may be readily manipulated into assembled relation with the fabric layers and after wearing of the layers may be dismantled and then reused.

Another object of the invention is to provide a bufling wheel of the type and character under consideration in which the cylindrical base flanges of the rings constituting the cores of the bumng sections are adapted, when shifted together into telescopic relation in connection with assembly of the cores, to grip one another frictionally to the end that the cores after assembly may be readily mounted on the hub structure while at the same time they are capable of being readily dismantled in connection with re-use thereof.

A further object of the invention is to provide a bufling wheel of the type and character last mentioned in which the teeth on the outer margins of the outwardly extending side flanges of the rings extend at right angles to the side flanges and in the same direction as the cylindrical base flanges and are adapted when the base flanges are slid together into telescopic relation in connection with assembly of the cores to be brought into gripping and penetrating relation with'the inner margins of the fabric layers.

. A still further object of the invention is to provide a buffing wheel which is generally of new and improved construction, effectively and emciently fulfills its intended purpose and is capable of being produced or fabricated at a low cost and also assembled and dismantled with facility.

Other objects of the invention and the various advantages and characteristics of the present bufling wheel will be apparent from a consideration of the detailed description.

The invention consists in the several novel features which are hereinafter set forth and are more particularly defined by claim at the conclusion hereof.

In the drawings which accompany and form a part of this specification or disclosure and in which like numerals of reference denote corresponding parts throughout the several views:

Figure 1 is a view partly in elevation and partly in section of a bufling wheel embodying the in vention;

Figure 2 is an elevation showing, in separated or dismantled relation, a pair of complemental pre-formed rigid rings constituting a core for one of the bufling sections of the wheel;

Figure 3 is a section showing the core-forming rings of Figure 2 before being shifted together into assembled relation with the fabric layers;-

Figure 4 is a side view of one of the bufiing sections, certain portions being broken away and other portions being shown in section for illustrative purposes;

Figure 5 is a section on the line 5-5 of Figure 4;

Figure 6 is an enlarged section taken on the line 6-6 of Figure 4, and illustrating in detail the construction and design of the core-forming rings and illlustrating the manner in which the cylindrical base flanges are arranged in telescopic relation when the complemental rings constituting cores of the bufiing sections are in their assembled position; and

Figure 7 is a fragmentary perspective of one of the fabric layers.

The bufiing wheel which is shown in the drawmay be positioned horizontally or vertically or at any other angle with respect to the horizontal and constitutes the medium whereby the desired drive of the bumng wheel is effected. As well understood in the art, the wheel is adapted during drive and when-a metallic or other surface is placed against its periphery to polish or buff the surface. As its component parts, the bumng wheel comprises a hub structure 8 and a rectilinear series of side by side bumng sections ill.

The hub structure constitutes a mounting for the bufling sections l6 and operates when the sections are in assembled relation" drivably to connect the sections to the shaft 6. As illustrated in Figure 1 of the drawings, the hub structure 8 consists of a pair of spaced apart discs ii and I2 and a plurality of bolts ii. The disc H is centrally apertured and surrounds the shaft 8. It is disposed inwards'of the outer end of the shaft and abuts against an annular shoulder M. The other disc, that is, the disc I2 is centrally apertured and surrounds the outer end of the shaft 8; Said outer end of the shaft is provided with a screw thread l6 and has thereon a nut I 6 which when tightened locks the hub struc ture 6 to the shaft. The bolts l3 of the hub structure 9 are preferably three in number and comprise shanks I! having heads It at certain ends thereof and nuts I! at their other ends. They are arranged in parallel relation with the shaft 6 and extend through aligned holes 26 in the outer marginal portions of the discs ii and I2. As shown in Figure l, the heads I! of the bolts abut against the outer surface of the disc Ii and the nuts I6 abut against the outer surface of the disc l2. When the nuts i6 are tightened, the discs H and i2 are drawn towards one another. The bolts are positioned equidistantly apart. The bufllng sections i6, when in operative relation with the hub structure, surround the shanks I of the bolts i3 and are clam'ped between the outer marginal portions of the discs H and I2. Each of the bufflng sections In consists of a pinrality of annular juxtapositioned fabric layers 2| and a core 22. The inner margins of the fabric layers 2| are pleated or gathered and are connected together by stitching 23. Preferably, the layers 2| of each bufllng section are formed by gathering or pleating one side marginal portion of a fabric strip and then winding or.wrapping the strip in a, spiral fashion. The gathering or pleating of the inner marginal portions of the fabric layers 2! form radially extending 'air passages which in connection with drive or operation of the wheel provide the desired ventilation or air circulation for cooling purposes. The cores 22 serve to hold the fabric layers 2! together and support them with respect to the hub structure 9; They fit within and serve to clamp together the inner marginal portions ofthe fabric layers. The core 22 of each bufling section i6 consists of a pair of complemental pre-formed oppositely positioned rigid rings 24 and 26. The latter are formed of metallic stampings. The metal'stock of which the rings 24 and 26 are formed is preferably of 20 gauge in order that the rings have the desired rigidity. The rings 24 consist of cylindrical base flanges 26, outer side flanges 21 and teeth 26. The cylindrical base flanges 26 are of such internal diameter that when the bufllng sections "I are mounted on the hub structure 9, they engage the shanks II of the bolts I3. The bolts serve to hold the boning sections against radial or transverse displacement with respect to the power driven shaft 6. Ihe inner and outer peripheries of the 0V- lindrical .base flanges 26 of the rings 24 are smooth. The outer side flanges 2l'of the rings 24 project outwards at right angles from the cylindrical base flanges 26 and when the cores are in their assembled position engage or abut against the inner marginal portions of certain of the outer-most fabric layers 2|. The teeth 28 of each of the rings 24 are arranged in a circular series and are spaced equidistantly apart. As shown in the drawings, the teeth 28 of the rings 24 are joined to the outer marginal portions of the outer side flanges 21. They extend at right angles to the side flanges and extend in the same direction as the cylindrical base flanges 26. When the cores 22 are in assembled relation with the fabric layers 2|, the teeth 28 are embedded in the inner marginal portions of certain of the fabric layers as best shown in Figure 6. Each of the rings 25 of the cores 22 consists of a cylindrical base flange 29, an annular outer side flange 30 and teeth 3|. The cylindrical base flanges 29 of the rings 25 are preferably the same in width as the base flanges 26 of the rings 24 and have the internal diameter thereof the same as the external diameter of the cylindrical base flanges 26. They surround and are in telescopic relation with the cylindrical base flanges 26 and grip the latter frictionally or with a so-called press fit when the cores are in their assembled position. Preferably, the inner and outer peripheries of the base flanges 29 are smooth. The annular outer side flanges 36 of the rings 25 project outwards at right angles from the cylindrical base flanges 29 and are disposed in opposed relation with the annular outer side flanges 21. They are in rigid relation with the cylindrical base flanges 28 and lap or abut against the inner marginal portions of the adjacent fabric layers 2|. The teeth 3| of each of the rings 25 are arranged in a circular series and are spaced equidistantly apart. They extend at right angles to the annular outer side flanges 36 and project in the same direction as the cylindrical base flanges 26. As shown in the drawings, the teeth 3i are arranged in alternate or inter-fitting relation with the teeth 28 and when the cores are in their assembled position, extend through or penetrate the inner marginal portions of certain of the fabric layers 2|. The teeth 3| and 28 are of such length that the inner marginal portions of all of the fabric strips 2| are gripped or penetrated. In connection with assembly of the bufilng sections iii, the fabric layers 2| and the core-forming rings 24 and 25, are first positioned as shown in Figure 3. Thereafter, the rings are shifted together by way of a punch press or other suitable means in order to bring them into clamped and gripping relation with the inner marginal portions of the fabric layers 2|. In connection with shifting together of the rings 24 and 25, the cylindrical base flanges 26 of the rings 26 slide into telescopic relation with the base flanges 26 of the rings 24. In addition, the teeth 28 and 3| are brought rectilinearly into penetrating or embedded relation with the inner marginal portions of the fabric layers 2| without crimping or jamming the inner marginal portions of the fabric layers. As heretofore pointed out the cylindrical base flanges 29 of the rings 25 frictionally grip the base flanges 26 of the rings 24 to the end that the cores, when assembled, will sections III, while arranged in a rectilinear series and side by side relationship, are slid onto the shanks ll of the bolts l3. After sliding of the buffing sections In into place, the disc i2 is mounted on the outer end of the shaft 8 and is secured in place by application and tightening of the nut i6 and the nuts 19. When such nuts are tightened, the outer marginal portions of the discs I I and I2 are in clamped relation with the cores 22 of the bufllng sections and serve to hold the sections in place and also to prevent outward sliding movement of the rings 24 with respect to the rings 25. As heretofore pointed out, the shanks I! of the bolts i3 serve to hold the bufllng sections l0 against radial or lateral displacement with respect to the shaft 8. Also as pointed out the hub structure 9 serves to connect the boiling sections for drive by the shaft 8.

The herein described buffing wheel is essentially simple in design or construction and may be produced at a low cost. It may be assembled and dismantled with facility and is characterized by the fact that the cores 22 by reason of their two-piece character may be re-used after the fabric layers 2| of the buffing sections i0 become worn.

The invention is not to be understood as restricted to the details set forth since these may be modified within the scope of the appended claim ,without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is:

As a new article of manufacture, a section adapted in conjunction with like sections and a hub structure to form a buffing wheel and comprising a plurality of annular luxtapositioned fabric layers and a core extending around and serving to secure together the inner marginal portions of the layers and embodying a preformed one-piece ring formed of a metallic stamping and consisting of a, cylindrical base flange,

a flat annular outer side flange extending outwards from the outer margin of the base flange and arranged in lapped relation with the inner marginal portion of one of the outermost fabric layers, and circular series of spaced apart teeth connected to the outer margin of the outer side flange, projecting at right angles and in the same direction as the base flange and embedded in the inner marginal portions of certain of the fabric layers, and a complemental preformed one-piece ring formed of a metallic stamping, positioned reversely with respect to the first mentioned ring and consisting of a cylindrical base flange extending closely around the base flange of said first mentioned ring, a flat outer annular side flange extending outwards from the outer margin of the second mentioned base flange and arranged in lapped relation with the inner marrrinal portion of the other outer-most fabric layer, and a circular series of spaced apart right angle teeth connected to the outer margin of the last mentioned side flange, projecting in the direction of the first mentioned teeth and embedded in the inner marginal portions of certain of the fabric layers, said rings being formed of metal stock of such gauge that the component parts thereof are essentially rigid and are not subject to bending after preforming of the rings, and being assembled by shifting them axially towards one another in order to bring the cylindrical base flanges into telescopic relation and effect rectilinear embedment of the teeth into the fabric layers without crimping or jamming inwards the inner marginal portions of said layers.

LOUIS M. SEELENFREUND.

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

UNITED STATES PATENTS Number

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