US2226624A - Buffing or polishing wheel - Google Patents

Description

De@ 31, 1940- L w. Mac-FARLAND ErAL 2,226,524

Filed N ov. 28, 1959 4 Sheets-Sheet 1 lNVENTORS Lauvn WMaEFil/Iand ETEphEn Kruglmcf ATTORNEY l Des. 31, 1940. 2 1 w. MaFARLAND Em 2,226,624

BUFFING OR POLISHING WHEEL Filed Nov. 28, 1959 4 Sheets-Sheet 2 INVENTORS Dec. 31, 1940. L. w. MacFARLAND ETAI. 2,226,624

` BUFFING OR POLISHING WHEEL Filed NOV. 28, 1939 4 Sheets-S1168?l 5 lNvENToRs Mmmm Dem-31, 1940. L w, MacFARLAND E1-AL 2,226,624

BUFFING OR POLISHING WHEEL 4 Sheets-Sheet 4 Filed Nov. 28, 1959 INVENTORE l Lauvgni MEFWIBQU imphsn Kgliqlmf V ATTORNEYy Patented Dec. 3l, 1,940

UNITED STATES BUFFING R POLISHING WHEEL Laurens W. MacFarland, Old Greenwich, Conn., and Stephen Krugloi, New York, N. Y.; said Krugloff assgnor to said MacFarland 4Application November 2s, 1939, serial No. 306,478

16 Claims.

This invention relates to improvements in bufflng or polishing wheels and in the construction of the individual sections of sectional bufing wheels, in the construction of individual segments forming such sections, and in the method of forming such segments.

One object of our invention is to provide an improved bufilng wheel, or wheel section, having improved means for the attachment of a plu- Arality of bufling segments or members.

Another object of this invention is to provide a plurality of rings or discs each having a series of pins or studs extending in an axial direction and spaced circumferentially around the ring in proximity to its outer peripheral edge, and a series of sockets or holes arranged in staggered relation to said pins or studs and adapted to receive the ends of pins or studs on an adjacent ring.

Still another object is to provide a buflng section comprising perforated buing members and axially projecting pins extending through said perforations to center the said members, and the pins of adjacent sections being arranged in staggered relation to each other so as to dispose the buing members in adjacent sections in such` manner as to distribute the material of said members uniformly throughout the peripheral surface of the bui.

With these and other objects in view, the in- 3l@ vention consists in the novel construction and arrangement of parts hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the 3g form and constructional details may be made without departing from the spirit of the invention or sacrificing any of the advantages thereof.

In the drawings:

Fig. 1 is a side elevation of a sectional buing wheel, mounted upon a spindle, and shown partly in section;

Fig. 2 is a side view showing `the assembly of the buliing segments in part of one section of a bufiing wheel;

Fig 3 is a similar view showing the disposition of the segments when in operation;

Fig. 4 is a view of the outer peripheral edge of one of the segments looking in the direction of the arrows LA! Fig. 3;

Fig. 5 is a view of one of the bufng segments before folding;

Fig. 6 is a view of the folded segment ready for assembly;

Fig. 'I is an enlarged detail section on the line '1 -'l of Fig. 23

Figs. 8 to 13 inclusive show a modified form of the invention; Fig. 8 being a View corresponding to Fig. 5, but showing a modified form of buiiing member;

Fig. 9 is a side view ofthe same in folded posi- 5 tion;

Fig. 10 is an edge view of the member;

Fig. 11 is a view showing one of the segments mounted on a retaining core ring;

Fig. 12 is a view corresponding to Fig. 3, but 10 showing a modified form of builing elements and attaching means;

Fig. 13 is a side View of yparts of the supporting means for the bufiing members;

Fig. 14 shows a strip of multi-ply fabric from 15 which bufilng segments of modified form lare produced;

Figs. 15 to 18 inclusive show other forms of buing segments, Figs. 15 and' 16 being respectively side and edge views of a buiiing brush seg- 20 ment; and Figs. 17 and 18 being corresponding .views of another form.

Referring to Figs. 1 to '1 inclusive, the wheel (Fig. 1) consists of five bufiing sections of similar construction, held between end plates I5, i6, 25

mounted upon the spindle I1, with a securing nut I8 in the well-known manner. The end plate i5 is formed on its inner face and in proximity to its outer peripheral edge with a series of axially projecting pins or studs i9 spaced at equal dis- 30 tances apart and adapted to receive the bufling segments 20, which latter consist of multi-ply discs, Fig. 5, of fabric or other suitable material, which may be obtained by cutting the centers from larger discs in the manufacture of hurling sections having a central opening equal to the dimensions of the disc members 20. The plies 2l in superimposed relation are provided with an inner member or core 22 of stringor other reinforcing material over which the plies are folded as shown at Fig. 6, and the member thus formed is provided with a line of stitching at 23 to enclose and retain the reinforcing core 22, and the plies are perforated at 24, 25, and are slit at 26. The bufiing member is then ready for assembly and is placed upon adjacent pins IB as shown at Fig. 2, the hurling members 20 being arranged in overlapping relation as shown. When a multisection wheel, as shown at Fig. 1, is required, discs or rings 21 are employed, see Fig. 7. Each disc or 50 ring 21 is provided with holes 28 for engagement upon reduced ends 29 forming part of the studs or pins I9, and these ends 29 may be slotted at 3U in :order to provide a certain amount of spring action whereby the ring 21 is held in assembled 55 relation to the disc l5. Each disc or ring 2l is also formed with pins or studs 3l similar to the pins or studs I9, but arranged equidistant between the holes 28 so that in assembled position the pins or studs I9 are in staggered relation to the pins or studs 3l. The studs I9 and holes 28 may be similarly disposed on the end discs I5, IS and on the intermediate rings 21, so that these discs and rings are interchangeable and discs such as I5, I6 may be employed in lieu of any of the rings 21 when so desired. Similar buing segments 28 are assembled upon the projecting pins or studs 3l, and by reason of the staggered relationship of the pins or studs I9, 3|, above referred to, a uniform distribution of the material of the buiilng segments is insured throughout the peripheral surface of the sectional wheel. When the desired number of sections have been assembled, projecting ends corresponding to the ends 29 are engaged by perforations in the end plate I6, and when the nut I8 is screwed upon the spindle I'l the parts of the bufiing wheel are retained in properly assembled position..

When the bui section is in use the overlapping portions of the segments 20 (Fig, 2) move outwardly under centrifugal force and the buing material then assumes the form shown at Fig. 3. This outward movement is a result of the slits 26 and oi' the mounting of the segments withoutaxial compression between adjacent plates or rings.

Referring to Figs. 8 to 13 inclusive, the segmental buiiing elements in this case consist of a v` `plurality of, superimposed plies 36 of fabric or other material that may be cut from the center of a larger buing disc, or may consist of a, discarded buing disc that hasibeen worn down to a diameter too small for satisfactory use.

The member comprising the plies 36 is perfor- 'ated at 31, 38 and is then folded along a line 39 passing centrally through both perforations. A line of stitches 40 is then provided between said perforations so as to form an open-ended loop 42 for the reception of a retaining wire or core 4|.

For the assembly of these bi1-fling members an end plate 49 corresponding to the end plate I5 is provided with an annular series of axially projecting pins 50 equidistantly arranged in proximity to the outer periphery of the plate. The inner faces of these pins 58 are engaged by the core wire or springA ring member 4I which has hooked ends 52 for engagement over one of said pins, and said spring member 4I preferably engages grooves formed in the inner faces of the pins 50. 'Ihe spring member 4I is adapted to be threaded through the loops 42 (Fig. 10) of the buil-lng members which are thus assembled in overlapping relation. By the use of intermediate discs or rings 55 having on one side face axially projecting pins 56 similar-to the said pins 50 and having on the opposite side Aface a similar series of axially projecting pins 57 arranged in staggered rela-tion to the pins 56. When the bul segment shown at Fig. 11 is in use, the projecting side portions 58 tend to move outwardly by centrifugal force so that each member when in operating position at high speed assumes the form substantially as shown at Fig. 12.

Buiiing segments for use in accordance with this invention may be produced Without folding` and Fig. 14 shows a multi-ply strip 32 of bias fabric or other suitable material which is perforated at 33 along both edges and is cut along inclined lines 34 so as to produce wedge-shaped blanks 35 with perforations suitably spaced for engagement by the pins I8, Fig. 2.

Figs. 15 to 18 inclusive show buing elements in the form of Tampico brushes 63, 64 or other fibrous bunches sol formed that they may be conveniently applied to the said pins I9. In the form shown at Figs. 15 and 16 the brush member 53 has an eye 88 while the member 54 shown at Figs. 17 and 18 has two eyes 6I, 82 spaced to suit the spacing of the said pins I9. These brush members 83, 88 are made by lacing or stitching the bristles or bres together at 65, and cement or other hardening composition may be employed in forming the eyes 69, 6 I, 62.

It has been heretofore proposed to provide means whereby cooling or Ventilating air may be passed inwardly in an axial direction through the body of a bufiing wheel and from thence outwardly in a radial direction between bufiing sections or segments, and although such ventilation or air cooling is not an essential part of the present invention, the end plates I5, I6 and 49 may all vbe provided with air holes 59, so -that air may pass l inwardly into the interior of the wheel and the form and arrangement of the pins or studs I9, 3l, 5I), and 5l, are such that spaces are provided for the free passage of Iair outwardly in a radial direction between adjacent bung sections, or between adjacent segments, so that effective ventilation or cooling is insured.

Although the drawings and the above specication disclose the best modes in which we have contemplated embodying our invention, we desire to be in no way limited to the details of such disclosure, for in the further practical application of our invention many changes in form and construction may be made as circumstances require n or experience suggests, without departing from the spirit of the invention within the scope of the appended claims.

What We claim is:

l. A sectional bung wheel comprising an end plate for mounting and centering the buiing section, studs mounted on said plate and circumferentially spaced from each other in close proximity to the outer peripheral edge of the plate, a plurality of buiiing' segments, means whereby the buflng segments are each anchored between two adjacent studs, and means on the free ends of the studs for engaging an adjacent section and for maintaining between the sections axial spacing to permit turning movement of the segments upon the studs.

2. A sectional buiiing wheel comprising ,an end plate for. mounting and centering the bu'ng section, studs projecting axially from said plate and circumferentially spaced from each other in proximity to the outer peripheral edge of the plate, a plurality of bufng segments, openings at the inner parts of the bung segments whereby such segments are penetrated and anchored to the studs, and meanson the studs for engaging and centering an adjacent section and maintaining a predetermined axial distance between the sections.

3. A sectional bufng wheel comprising an annular buiiing section having a plurality of bung members of exible material, rings having axially projecting studs spaced from each other in a circumferential direction for anchoring the said buing members, and means for maintaining unifonn spacing between said rings for the accommodation of the builng members to permit independent turning movement of the said members under centrifugal force while the buff is in operation.

4. In a sectional buffing wheel, a bufIing section comprisingv a plurality of similar bufling members arranged circumferentially around the section, metallic rings supporting and centering me section, a plurality of axially projecting anchoring and spacing studs secured to one of said rings and engaging the second ring to maintain the spaced relation of such rings and to anchor the buiiing members without axial compression, and holes in the said second member to receive the ends of said studs.

5. A sectional buiing wheel comprising annular members for centering and supporting the buffing sections, each buiiing section comprising a circumferential series of bufing segments, a circumferential series of anchoring studs spaced from each other in proximity to the outer peripheral Aedge of a centering member, and spring members on said studs for engaging an adjacent centering member.

6. A sectional builing wheel comprising rigid annular members for supporting and centering fthe bumng sections', projecting studs for mounting the bumng members upon the centering members, means on said studs for maintaining said centering members in spaced relation to each other, and two spaced perforatins in each buiiing member penetrated by two adjacent studs to anchor each member in its section.

7. A sectional bung wheel comprising rigid annular members for supporting and centering the sections, a plurality of bufiing segments in each section, axially projecting studs for mounting the bufng segments upon the centering members, means on said studs for maintaining said centering Emembers in axially spaced relation to each other, and perforations in the bufng segments whereby the said studs penetrate and anchor the segments in the sections, the studs in adjacent sections being staggered in relation to each other to uniformly distribute the material in the buing sections throughout the circumference of the sectional wheel.

8. In a sectional bumng wheel, buing sections each comprising a plurality of circumferentially arranged bufiing members, a metallic centering ring for said members, an annular series of spaced projecting studs provided on the side face of the ring for anchoring the bufiing members, a

series of sockets in said ring for engaging the` studs on an adjacent ring, the sockets and studs being arranged in staggered relation toeach other in each ring to align each stud in the assembled wheel in alignment with the stud in the second section therefrom, and means independent of the bun'ing members Vfor maintaining the spaced relation of the rings from each other in.

an axial direction to permit free turning movement of the bufling members upon their anchoring studs.

9. In a sectional bufling wheel, an annular buf--` ling section of flexible material comprising individual circumferentially arranged portions, a pair of perforations in each portion, an annular series of anchoring studs circumfercntially spaced from each other with two adjacent studs penetrating the perforations of each buff portion, annular supporting and centering members carrying said studs, means for maintaining spaced relation between said annular members in an axial direction to allow limited turning movement of the bufng portions upon the studs, and means for insuring staggered relationship between the bufng portions in adjacent sections.

l0. In a sectional bulng wheel, an annular buii'ing section of flexiblematerial comprising a series of circumferentially arranged segments of bufing material, openings in the segments near,

tween the bufllng segments in adjacent sections.

11. A buing wheel section comprising an annular metallic member for supporting andcentering the buff upon its spindle, an annular series of studs projecting in an axial direction from said annular member in proximity to its outer peripheral edge, and a plurality of buffing members forming the said section and being of substantially semi-circular form `and having twol perforationsl with a split extending therebetween,

.the perforations being adapted to receive two adjacent studs so that the member may turn upon said studs and the outer corners of the buff portions may swingoutwardly towards the periphery of the buffs to pucker the material of the buff and provide a substantially uniform circumferential buing surface.

12. In a buiilng' section, a plurality of bumng segments each comprising a plurality of exible discs folded along a center line, a flexible reenforcing core at the center part of the fold, a slit extending centrally at right-angles` to the said core, a perforation extending through the material at each side of the slit, two axially projecting studs spaced from each other in a circumferential direction for engaging said perforations to anchor the bufling member and permit limited turning movement of said member under centrifugal force, and means for supporting said studs upon the spindle.

13. A bumng segment for a buiiing wheel of the character described comprising a multi-ply structure of flexible bufng material folded along its central line, reenforcing stitches extending along the central part of the fold, a split formed in the center part of the buff perpendicular to the fold, and two perforations located in proximity to the fold, for the reception of two spaced anchoring studs.

14. A buiiing segment for a bufiing wheel of the character described comprising a multi-ply structure of flexible bumng material of substantially circular form folded along its central line, reenforcing stitches parallel to the central part oif the fold, a strengthening core enclosed by said stitches, a slit extending through the fold in the center part ofthe buff and perpendicular to the fold, and two perforaticns located in proximity to the fold, one on each side of the slit, for the reception of anchoring studs.

`15. In a sectional builng wheel, a builln'g section comprising a metallic ring member, a series of axially projecting studs on said ring, an arcuate spring rod retained by said studs, and a plurality of' flexible bumng members anchored by said rod and spaced from each other by said studs.

16. In a buing Wheel, an annular bufng sec tion comprising a plurality of bung segments arranged eircumferentially around the section and folded to form loops at their inner extremity, a retaining core extending through said loops, a plurality o studs for retaining said core, a metallic ring carrying said studs, and means on said studs for maintaining the spaced relation between adjacent rings in an axial direction to permit limited movement of the bufng segments upon the retaining core.

L. W. MACFARLAND. STEPHEN KRUGLOFF.

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