US2810239A - Holder for abrasive disk - Google Patents
Holder for abrasive disk Download PDFInfo
- Publication number
- US2810239A US2810239A US620648A US62064856A US2810239A US 2810239 A US2810239 A US 2810239A US 620648 A US620648 A US 620648A US 62064856 A US62064856 A US 62064856A US 2810239 A US2810239 A US 2810239A
- Authority
- US
- United States
- Prior art keywords
- abrasive disk
- pad
- shaft
- holder
- resilient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
Definitions
- This invention relates to a holder for abrasive disks such as are used in surfacing machines.
- Fig. 1 is a section on the line 11, Fig. 2;
- Fig. 2 is a top plan view of Fig. 1;
- Fig. 3 is an under side perspective view of the rubber pad
- - Fig. 4 is a perspective view of the abrasive disk with a portion broken out.
- 1 indicates the drive shaft of a surfacing machine and 2 is the abrasive disk, which is herein shown as a rigid disk.
- the shaft 1 has fast thereon a collar 3, said collar in the drawing being shown as being screw threaded to the shaft, the end 4 of the shaft projecting below the collar.
- a backing pad 5 of rubber or some other similar resilient material Secured to the collar 3 is a backing pad 5 of rubber or some other similar resilient material, said pad being connected to the collar by means of screws 6 which extend through the collar and are anchored in nuts 7 that are embedded in the rubber pad element 5.
- the pad element has an enlarged central hole or opening 8 which is coaxial with the shaft, said opening ibeing considerably larger than the shaft.
- the pad 5 is formed on its under side with a circular recess 9 which is coaxial with the shaft, said recess presenting the fiat bottom surface 10 and the annular side wall 11 which is shown as slightly inclined.
- the abrasive disk is held in its operative position shown in Fig. l by means of a clamping element 15 which is shown as having a hub portion 16 screw threaded to the end 4 of the drive shaft and a laterally extending clamping flange portion 17 which underlies the hub portion 13 of the abrasive disk.
- a washer 18 of rubber or other suitable material is interposed between the flange 17 and the hub portion 13.
- the size of the openings 8 and 12 in the pad and abrasive disk is such that when the parts are assembled as shown, the hub 16 of the clamping element is spaced from the walls of said openings.
- the abrasive disk is free to yield slightly in a lateral direction and also it may have a slight rocking movement whenever said disk engages a hard or uneven spot in the surface being treated, thereby increasing the efliciency of the machine in properly finishing a. surface.
- the only parts of the holder assembly with which the abrasive disk 2 contacts are the resilient rubber pad 5 and the resilient washer 18.
- the size of the apertures 12 and 14 in the abrasive disk and the pad is sufficient so that there is no direct contact between the clamping element 1'5 and the abrasive disk.
- a holder for an abrasive disk comprising a drive shaft, a collar fast thereon through which the shaft extends with the end portion of the shaft projecting below the collar, a backing pad of resilient material secured to the collar and having an enlarged central opening through which the projecting end of the shaft extends, said backing pad having a circular recess in its lower face which is concentric with the shaft and which presents a flat bottom wall and a circular side wall, a rigid abrasive disk having a raised central hub portion and .an opening therethrough registering with the opening through the resilient pad, said hub portion having a fiat top surface and a circular wall and being of a size and shape to fit accurately the recess in the under side of the pad, a clamping element presenting a hub portion screwed to the lower end of the drive shaft and occupying the openings in the backing pad and abrasive disk and also presenting a laterally extending clamping flange which lies beneath the raised portion of the abrasive disk, and :a
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Oct. 22, 1957 A. C. BURLEIGH HOLDER FOR ABRASIVE DISK Filed NOV. 6, 1956 United States Patent HOLDER FOR ABRASIVE DISK Arthur C. Burleigh, Wellesley, Mass.
Application November 6, 1956, Serial No. 620,648
1 Claim. (Cl. 51-468) This invention relates to a holder for abrasive disks such as are used in surfacing machines.
It appears to be an accepted fact that a surfacing machine in which the abrasive element is coupled with the driving shaft through a resilient or cushioning coupling gives more satisfactory results than a surfacing machine in which the abrasive element is rigidly attached to the driving shaft.
-It is an object of the present invention to provide a novel resilient or cushioning coupling construction for connecting the abrasive element to the drive shaft, which coupling connection is simple in construction and inexpensive to manufacture.
In the drawings wherein I have illustrated :a selected embodiment of my invention:
Fig. 1 is a section on the line 11, Fig. 2;
Fig. 2 is a top plan view of Fig. 1;
Fig. 3 is an under side perspective view of the rubber pad; and
- Fig. 4 is a perspective view of the abrasive disk with a portion broken out.
In the drawings, 1 indicates the drive shaft of a surfacing machine and 2 is the abrasive disk, which is herein shown as a rigid disk.
The shaft 1 has fast thereon a collar 3, said collar in the drawing being shown as being screw threaded to the shaft, the end 4 of the shaft projecting below the collar.
Secured to the collar 3 is a backing pad 5 of rubber or some other similar resilient material, said pad being connected to the collar by means of screws 6 which extend through the collar and are anchored in nuts 7 that are embedded in the rubber pad element 5.
The pad element has an enlarged central hole or opening 8 which is coaxial with the shaft, said opening ibeing considerably larger than the shaft.
The pad 5 is formed on its under side with a circular recess 9 which is coaxial with the shaft, said recess presenting the fiat bottom surface 10 and the annular side wall 11 which is shown as slightly inclined.
The abrasive disk also has a central opening 12 which registers with the opening 8 in the pad and is considerably larger than the shaft 1. The central portion of the abrasive disk is offset relative to the body thereof, thereby to form a raised hub portion 13. This raise-d hub portion has a size and shape corresponding to that of the recess 9 so that when the abrasive disk and pad are assembled as shown in Fig. 1 the raised hub portion 16 fills the recess 9 of the pad and the side wall 14 of the hub contacts the wall 11 of the recess throughout its extent.
The abrasive disk is held in its operative position shown in Fig. l by means of a clamping element 15 which is shown as having a hub portion 16 screw threaded to the end 4 of the drive shaft and a laterally extending clamping flange portion 17 which underlies the hub portion 13 of the abrasive disk. A washer 18 of rubber or other suitable material is interposed between the flange 17 and the hub portion 13.
The size of the openings 8 and 12 in the pad and abrasive disk is such that when the parts are assembled as shown, the hub 16 of the clamping element is spaced from the walls of said openings.
With this construction the torque or driving force for rotating the abrasive disk is transmitted from the shaft 1 to the resilient backing pad 5 and then through the side walls 11 and 14 of the pad 5 and abrasive disk as well as through the faces of the pad and washer 18 which engage the top and bottom surfaces of the abrasive disk.
With this arrangement the abrasive disk is free to yield slightly in a lateral direction and also it may have a slight rocking movement whenever said disk engages a hard or uneven spot in the surface being treated, thereby increasing the efliciency of the machine in properly finishing a. surface.
It will be noted that the only parts of the holder assembly with which the abrasive disk 2 contacts are the resilient rubber pad 5 and the resilient washer 18. The size of the apertures 12 and 14 in the abrasive disk and the pad is sufficient so that there is no direct contact between the clamping element 1'5 and the abrasive disk.
1 claim:
A holder for an abrasive disk comprising a drive shaft, a collar fast thereon through which the shaft extends with the end portion of the shaft projecting below the collar, a backing pad of resilient material secured to the collar and having an enlarged central opening through which the projecting end of the shaft extends, said backing pad having a circular recess in its lower face which is concentric with the shaft and which presents a flat bottom wall and a circular side wall, a rigid abrasive disk having a raised central hub portion and .an opening therethrough registering with the opening through the resilient pad, said hub portion having a fiat top surface and a circular wall and being of a size and shape to fit accurately the recess in the under side of the pad, a clamping element presenting a hub portion screwed to the lower end of the drive shaft and occupying the openings in the backing pad and abrasive disk and also presenting a laterally extending clamping flange which lies beneath the raised portion of the abrasive disk, and :a washer of resilient material interposed between the clamping member and the under face of the raised hub portion of the abrasive disk, the diameter of the clamping element being smaller than the diameter of the openings through the pad and abrasive disk whereby said abrasive disk has contacts with the resilient pad and resilient washer only and the entire torque for rotating said abrasive disk is transmitted thereto from the shaft entirely through the resilient backing pad and the resilient washer.
No references cited.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US620648A US2810239A (en) | 1956-11-06 | 1956-11-06 | Holder for abrasive disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US620648A US2810239A (en) | 1956-11-06 | 1956-11-06 | Holder for abrasive disk |
Publications (1)
Publication Number | Publication Date |
---|---|
US2810239A true US2810239A (en) | 1957-10-22 |
Family
ID=24486772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US620648A Expired - Lifetime US2810239A (en) | 1956-11-06 | 1956-11-06 | Holder for abrasive disk |
Country Status (1)
Country | Link |
---|---|
US (1) | US2810239A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2918760A (en) * | 1958-02-26 | 1959-12-29 | Flexan Corp | Abrading disk mount |
US3040485A (en) * | 1959-07-16 | 1962-06-26 | Tocci-Guilbert Berne | Resilient coupling |
US3136100A (en) * | 1962-07-11 | 1964-06-09 | Norton Co | Grinding wheel |
US3167892A (en) * | 1960-06-07 | 1965-02-02 | Lan Elec Ltd | Shaft mounting arrangement |
US3392616A (en) * | 1965-11-08 | 1968-07-16 | Tysaman Machine Company Inc | Oscillating saws |
US3469485A (en) * | 1967-01-03 | 1969-09-30 | Carborundum Co | Oscillating cut-off machine |
US4941293A (en) * | 1989-02-07 | 1990-07-17 | Ekhoff Donald L | Flexible rocking mount with forward pivot for polishing pad |
US5150546A (en) * | 1991-12-02 | 1992-09-29 | Tucker Clifton E | Disc sander implement |
US5152106A (en) * | 1986-04-03 | 1992-10-06 | Mackay Joseph H Jun | Cut-off wheel having disposable mounting hub |
US20010020882A1 (en) * | 2000-02-09 | 2001-09-13 | Alfred Heinrich | Plastic component with a high filling grade |
EP1262284A1 (en) * | 2001-05-31 | 2002-12-04 | Fema S.A. | Diamond grinding disc for facing tools |
US20120225611A1 (en) * | 2010-12-30 | 2012-09-06 | Saint-Gobain Abrasifs | Abrasive wheels and methods for making and using same |
US20140170940A1 (en) * | 2012-12-19 | 2014-06-19 | Hon Hai Precision Industry Co., Ltd. | Polishing device |
-
1956
- 1956-11-06 US US620648A patent/US2810239A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2918760A (en) * | 1958-02-26 | 1959-12-29 | Flexan Corp | Abrading disk mount |
US3040485A (en) * | 1959-07-16 | 1962-06-26 | Tocci-Guilbert Berne | Resilient coupling |
US3167892A (en) * | 1960-06-07 | 1965-02-02 | Lan Elec Ltd | Shaft mounting arrangement |
US3136100A (en) * | 1962-07-11 | 1964-06-09 | Norton Co | Grinding wheel |
US3392616A (en) * | 1965-11-08 | 1968-07-16 | Tysaman Machine Company Inc | Oscillating saws |
US3469485A (en) * | 1967-01-03 | 1969-09-30 | Carborundum Co | Oscillating cut-off machine |
US5152106A (en) * | 1986-04-03 | 1992-10-06 | Mackay Joseph H Jun | Cut-off wheel having disposable mounting hub |
US4941293A (en) * | 1989-02-07 | 1990-07-17 | Ekhoff Donald L | Flexible rocking mount with forward pivot for polishing pad |
US5150546A (en) * | 1991-12-02 | 1992-09-29 | Tucker Clifton E | Disc sander implement |
US20010020882A1 (en) * | 2000-02-09 | 2001-09-13 | Alfred Heinrich | Plastic component with a high filling grade |
US6967047B2 (en) * | 2000-02-09 | 2005-11-22 | Max Baermann Gmbh | Composite article with highly filled plastic component |
EP1262284A1 (en) * | 2001-05-31 | 2002-12-04 | Fema S.A. | Diamond grinding disc for facing tools |
FR2825310A1 (en) * | 2001-05-31 | 2002-12-06 | Mbh Dev | ABRASIVE DIAMOND TRAYS FOR SURFACING TOOLS |
US20120225611A1 (en) * | 2010-12-30 | 2012-09-06 | Saint-Gobain Abrasifs | Abrasive wheels and methods for making and using same |
US8961269B2 (en) * | 2010-12-30 | 2015-02-24 | Saint-Gobain Abrasives, Inc. | Abrasive wheels and methods for making and using same |
US20140170940A1 (en) * | 2012-12-19 | 2014-06-19 | Hon Hai Precision Industry Co., Ltd. | Polishing device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2810239A (en) | Holder for abrasive disk | |
US2425368A (en) | Abrasive disk unit | |
US2993311A (en) | Rotatable disc sander and the like | |
US4138804A (en) | Machine head assembly and torque-transmitting device incorporated in the same | |
US2755900A (en) | Flexible coupling means for separable shafts | |
US2542154A (en) | Torque transmitting and cushioning means | |
US2541526A (en) | Clutch for floor conditioning machines | |
US1840254A (en) | Polishing apparatus | |
US2887712A (en) | Strand type mops with revoluble heads | |
US2417680A (en) | Sanding pad | |
US2767528A (en) | Back pad support | |
US1778470A (en) | Surfacing apparatus | |
US2410812A (en) | Support for abrasive disks | |
US3631635A (en) | Grinding and polishing machine | |
US2666281A (en) | Back pad | |
US2172407A (en) | Pad for sanders and the like | |
US2717478A (en) | Grinding machine | |
CN106737248A (en) | Elastic polished disk | |
US2800752A (en) | Sanding disk | |
GB2033214A (en) | Mounting Floor Polishing Brushes and Pads | |
US2829527A (en) | Power operated vibrators | |
US2217791A (en) | Backing pad for sanding or polishing machines | |
US1487024A (en) | Lens-grinding lap | |
US2906068A (en) | Attachment fastening | |
US2577042A (en) | Truing and balancing device for face type diamond grinding wheels |