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Publication numberUS1998244 A
Publication typeGrant
Publication dateApr 16, 1935
Filing dateJul 7, 1933
Priority dateJul 7, 1933
Publication numberUS 1998244 A, US 1998244A, US-A-1998244, US1998244 A, US1998244A
InventorsLang John Henry
Original AssigneeLang John Henry
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Polishing pad
US 1998244 A
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Description  (OCR text may contain errors)

April 16, 1935. (Jin. LANG OLISHING ,PAD originallFiled July 7, 195s INVENTOR dywvwQ/L ATTORNEY Patented Apr. 16, 1935 POLISHING PAD John Henry Lang, Detroit, Mich.

ApplicationJuly 7, 1933, Serial No. 679,277 A Renewed March 11, 1935 2 Claims.

vThis invention relates to polishing pads `and particularly to polishing pads. adapted to be rotatively driven. f Rotative pads employed for bufling and polish ing the painted or varnished surfaces of vehicles attains fromlthe construction `hereinafter described and illustrated in the accompanying drawing, wherein: l a

. Fig. lis a rear view of the improved pad,

Fig. 2 is a diametrical sectional view of the pad taken upon the line 2-2 of Fig. 1,

Fig. 3 is a View vsimilar to Fig. 2 but showing two of the improved pads combined to form a polishing wheel,

Fig.- 4 is an enlarged view of a portion of Fig. 3.

Fig. 5 is a perspective View of parts forming a mounting for the pad.

In these views, the polishing element of the pad comprises a circular piece of sheep skin I and the fleece 2 thereof. Preferably said element is skin -(with fleece attached), of aggregate circular form, radially abutting as indicated at 2d.

Thus thepad can be built of relatively small pieces, which would otherwise be wasted. Said pieces may be held in proper assembly, by a circular canvas backing sheet 3, of somewhat lesser radius than the skin I, glued or otherwise tightly fastened to and against said skin.

These segments are further fastened together, substantially centrally of the pad by a grommet 4, set into a central opening of the pad and having a considerably larger contact with the front face of the pad than with its rear face.

` Preferably there is further employed a reinforcement 5, formed of sheet metal or the like v f and having several suitably spaced, slightly ilexysubstantially one half the radius of the supporting-sheet. l

To afford the arms I5, a requisite slight iiexibility Without unduly decreasing their area, par- (Cl. 15--230) k ticularly at their outer ends it is preferred to progressively increase the width of said arms as they extend outwardly.'

The described pad may be attached to any suitable rotative support. As illustrated, the support comprises a face plate 'I having Aa hub l3, into which iscentrally lthreaded astud 9y having a socket-forming head I'iy witha cam slot I I laterally openingfrom its socket. From said'slot, a groove I2 extends interiorly of said head to the outer en d thereof.

The front face of the p-ad is engageable Aby a clamping disk I3 having a central plug I4 insertable through the'grorninet 4 into the socket of the head I6, the groove I2, accommodating a pin I 5 on said plug during such insertion. 'When thev pin I5 has thus been entered .in the slot II, a slight rotation of the disk I3 will clamp the pad securely between said disk and the face plate l. In use the described pad is rotated at aselected speed, while the' polishing element is pressed against a surface to be polished. The

pad flexes, as it rotates to accommodate itself to major depressions or projections of the surface engaged, and it is at times desirable toincline the pad to thesurface so as to give effect only to the outer or peripheral portion of the pad.

Excessive flexibility isdetrimental and it has been found desirableto alford the central portion of the pad only a slight flexure, while affording a much larger freedom of curvature to the outer portion.

This result is very perfectly achieved by the n described pad, in which the sheet 3 and arms S, largely limit flexure of the central portion of the pad, the area outward saidl arms having considerably greater freedom, and region outwardof the sheet 3 having a Vstill greater freedom.

By thus differentially reinforcing the pad in regions of different radius, it has proven feasible to largely .increase the useful life of the pad over present practice.

Preferably the skin I is untanned, it having been found that tanning renders such skin unduly flexible and decreases resistance of the pad to wear. k

The invention is presented as including all such modifications and changes as come within the scope of the following claims.

What I claim is: 1. A rotary polishing pad comprising a substantially circular polishing element, formed of `fluffy material, a flexible substantially circular supporting sheet for said element, of lesser ra- 10 tured, and a grommet engaging said central apertureand holding the specified parts of the pad in assembly.

"2. A rotary polishing pad, as set forth by claim ments, of aggregate circular form, and said supporting sheet being formed of corresponding segments, and said flexible reinforcing sheet holding said segments in unitary circularassernbly.

JOHN HENRY LANG.

1, said polishing element being formed in seg-

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2471114 *Oct 16, 1947May 24, 1949Edwin Metcalfe GeorgePolishing bonnet
US2690030 *Nov 1, 1949Sep 28, 1954Thompson Bessie PierceInsect repeller
US2934775 *Apr 23, 1956May 3, 1960Bergstrom James DPower operated shoe care device
US3007189 *Oct 21, 1957Nov 7, 1961Crane Samuel PCushioned polishing disc
US3537122 *Sep 6, 1968Nov 3, 1970Proffitt John R JrPolishing pad
US3990124 *Dec 3, 1974Nov 9, 1976Mackay Joseph H JunReplaceable buffing pad assembly
US4095303 *Jan 27, 1977Jun 20, 1978Armstrong John LDry cleaning carpeting
US5311634 *Feb 3, 1993May 17, 1994Nicholas AndrosSponge cleaning pad
US5461750 *Feb 2, 1995Oct 31, 1995Kaiser; Richard A.Double curved backing plate with cushioned support for rotary buffing pads
US5964006 *Jan 13, 1997Oct 12, 19993M Innovative Properties CompanyRotary brush
US6138317 *Aug 31, 1999Oct 31, 20003M Innovative Properties CompanyRotary surface treatment tool
US6213631 *Dec 30, 1999Apr 10, 2001Barbara J. MirandaAdapter for sealant tube
US7657960 *May 17, 2006Feb 9, 2010Umbrell Richard TQuick release connector for dual-sided buffing pad
US8607399 *Jun 2, 2008Dec 17, 2013Richard T. UmbrellQuick release connector for a single or dual-sided pad
US20080289132 *Jun 2, 2008Nov 27, 2008Umbrell Richard TQuick release connector for a single or dual-sided pad
US20120064809 *May 13, 2010Mar 15, 20123M Innovative Properties CompanyTufted buffing pad
Classifications
U.S. Classification15/230.19, 15/230, 403/348
International ClassificationA47L11/164
Cooperative ClassificationA47L11/164, A47L11/4069, A47L11/4038, A47L11/4058
European ClassificationA47L11/40F2, A47L11/40G4, A47L11/40J4, A47L11/164