US3104503A - Sander plate assembly for portable sanding tools - Google Patents

Sander plate assembly for portable sanding tools Download PDF

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Publication number
US3104503A
US3104503A US81588A US8158861A US3104503A US 3104503 A US3104503 A US 3104503A US 81588 A US81588 A US 81588A US 8158861 A US8158861 A US 8158861A US 3104503 A US3104503 A US 3104503A
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Prior art keywords
plate assembly
base
sander plate
portable sanding
sanding tools
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Expired - Lifetime
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US81588A
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Joseph P Yelpo
Joseph J Romano
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Singer Co
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Singer Co
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Priority to US81588A priority Critical patent/US3104503A/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/10—Floor surfacing or polishing machines motor-driven
    • A47L11/12—Floor surfacing or polishing machines motor-driven with reciprocating or oscillating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material

Definitions

  • This invention relates to a sander plate assembly for a portable sanding tool and more particularly to means associated therewith for releasably clamping abrasive sheets.
  • the invention comprises the devices, combinations and arrangements of par-ts hereinafter set forth and illustrated in the accompanying drawings of a preferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.
  • FIG. 1 is a plan view of a sander plate embodying the invention.
  • FIG. 2 is an elevational view, partly in section, of the device of FIG. 1.
  • FIG. 3 is a fragmentary plan view of the device of FIG. 1 showing the parts in a specific operating condition.
  • FIG. 4 is an elevational view of the parts shown in FIG. 3.
  • FIG. 5 is an exploded view showing details of the cam and lever assembly.
  • a flat rectangular base has struck-up lug portions 11 and 12 forming means for securing the base to a driving tool body (not shown).
  • a rubber pad 13 is cemented to the bottom of the base 10 to serve as a cushion for an abrasive sheet which is releasably held against the pad 13 by means to be described.
  • a leaf spring means 16 enlarged at the free end and bent to form a clamp portion 17.
  • a transverse stiffening rib 18 is formed in the material in the clamp portion to provide lateral stiffness and a central aperture 19 is provided, through which extends a lever-operated cam 20.
  • the cam 20, as best seen in FIG. 5, is preferably formed from a single piece by bending to provide a lever portion 21, a cam portion 22 and a body pontion 23 which latter embraces a pin 24 secured to the base 10 as by riveting.
  • the pin 24 stands with its axis positioned normally to the base 10 and extending upward through the central aperture 19 as shown.
  • the leaf spring means 16 In the position of the parts as shown in FIGS. 1 and 2, the leaf spring means 16 is normally warped to stand with the clamp portion 17 thereof spaced away from the base 10 to form a gap for insertion of the abrasive sheet 14. Clamping of the abrasive sheet is effected by rotation of the lever-operated cam 20 about the pin 24 from the position shown in FIGS. 1 and 2 to the position shown in FIGS. 3 and 4. As the lever 21 is turned, the cam portion 22 first engages a depressed portion 25 of the leaf spring means. Further rotation of the lever 21 earns the clamp portion 17 of the leaf spring means 16 downward toward the base 10 until, in the position shown in FIGS. 3 and 4, the abrasive sheet 14 is securely but resiliently clamped between the clamp portion 17 and the base 10.
  • Removal of the abrasive sheet is eiiected by reversing the procedure described above.
  • a sander plate assembly for a portable sanding tool adapted to receive abrasive sheets comprising a base, leaf spring means secured at one end to said base and normally warped to stand at the other end with a clamp portion spaced away from said base to form a gap for insertion of said abrasive sheet, said leaf spring means having a centrally apertured portion, and lever-operated cam means positioned on said base to swing about an axis normal to said base and projecting through said apertured portion to urge said clamp portion to engage said abrasive sheet in clamping relation with the base.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

Sept. 24, 1963 J. P. YELPO ETAL 3,104,503
SANDER PLATE ASSEMBLY FOR PORTABLE SANDING TOOLS Filed Jan. 9, 1961 2 Sheets-Sheet l INVENTORS Joseph P. Yelpo WITNESS Joseph J. Romano ATTORNEY Sept. 24, 1963 J. P. YELPO ETAL SANDER PLATE ASSEMBLY FOR PORTABLE SANDING TOOLS Filed Jan. 9, 1961 2 Sheets$heet 2 Fig.3
I 24 i I 20 II E i 23 w I0 I F|g.4 l3 I Fig.5
INVENTORS Joseph P. Yelpo Joseph J. Romano WITNESS BY 4 K a ZTTORNEY United States Patent 3,104,503 SANDER PLATE ASSELY FOR PORTABLE SANDLNG TOOLS Joseph P. Yelpo, Greenville, S.C., and Joseph J. Romano,
South River, N.J., assignors to The Singer Company,
a corporation of New Jersey Filed Jan. 9, 1961, Ser. No. 81,588 1 Claim. (Cl. 51189) This invention relates to a sander plate assembly for a portable sanding tool and more particularly to means associated therewith for releasably clamping abrasive sheets.
It is an object of this invention to provide a sander plate assembly having simple but effective means for releasably clamping abrasive sheets.
With the above and other objects in view, as will hereinafter appear, the invention comprises the devices, combinations and arrangements of par-ts hereinafter set forth and illustrated in the accompanying drawings of a preferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.
In the drawing,
FIG. 1 is a plan view of a sander plate embodying the invention.
FIG. 2 is an elevational view, partly in section, of the device of FIG. 1.
FIG. 3 is a fragmentary plan view of the device of FIG. 1 showing the parts in a specific operating condition.
FIG. 4 is an elevational view of the parts shown in FIG. 3.
FIG. 5 is an exploded view showing details of the cam and lever assembly.
Referring now to FIG. 1, a flat rectangular base has struck-up lug portions 11 and 12 forming means for securing the base to a driving tool body (not shown). A rubber pad 13 is cemented to the bottom of the base 10 to serve as a cushion for an abrasive sheet which is releasably held against the pad 13 by means to be described.
At each end of the base 10 and secured to the top side thereof by means of rivets 15 is a leaf spring means 16 enlarged at the free end and bent to form a clamp portion 17. A transverse stiffening rib 18 is formed in the material in the clamp portion to provide lateral stiffness and a central aperture 19 is provided, through which extends a lever-operated cam 20.
The cam 20, as best seen in FIG. 5, is preferably formed from a single piece by bending to provide a lever portion 21, a cam portion 22 and a body pontion 23 which latter embraces a pin 24 secured to the base 10 as by riveting. The pin 24 stands with its axis positioned normally to the base 10 and extending upward through the central aperture 19 as shown.
In the position of the parts as shown in FIGS. 1 and 2, the leaf spring means 16 is normally warped to stand with the clamp portion 17 thereof spaced away from the base 10 to form a gap for insertion of the abrasive sheet 14. Clamping of the abrasive sheet is effected by rotation of the lever-operated cam 20 about the pin 24 from the position shown in FIGS. 1 and 2 to the position shown in FIGS. 3 and 4. As the lever 21 is turned, the cam portion 22 first engages a depressed portion 25 of the leaf spring means. Further rotation of the lever 21 earns the clamp portion 17 of the leaf spring means 16 downward toward the base 10 until, in the position shown in FIGS. 3 and 4, the abrasive sheet 14 is securely but resiliently clamped between the clamp portion 17 and the base 10.
Removal of the abrasive sheet is eiiected by reversing the procedure described above.
Having thus set forth the nature of this invention, what we claim herein is:
A sander plate assembly for a portable sanding tool adapted to receive abrasive sheets comprising a base, leaf spring means secured at one end to said base and normally warped to stand at the other end with a clamp portion spaced away from said base to form a gap for insertion of said abrasive sheet, said leaf spring means having a centrally apertured portion, and lever-operated cam means positioned on said base to swing about an axis normal to said base and projecting through said apertured portion to urge said clamp portion to engage said abrasive sheet in clamping relation with the base.
References Cited in the file of this patent UNITED STATES PATENTS 2,251,329 Ekstrom Aug. 5, 1941 2,428,618 Dispensiere Oct. 7, 1947 2,464,296 Ekstrom Mar. 15, 1949 2,509,561 Dremel May 30, 1950 2,530,301 Hoy Nov. 14, 1950
US81588A 1961-01-09 1961-01-09 Sander plate assembly for portable sanding tools Expired - Lifetime US3104503A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224149A (en) * 1963-12-16 1965-12-21 Eugene M Harrington Hand sander
US3822518A (en) * 1972-09-07 1974-07-09 Rodac Pneumatic Tools Sanding shoe and clip therefor
DE2832424A1 (en) * 1978-07-24 1980-02-14 Licentia Gmbh Portable electric sanding machine - has eccentric sanding disc fixed to motor shaft, clamps for sandpaper, and dust extraction hood
DE3921613A1 (en) * 1988-07-01 1990-01-04 Hitachi Koki Kk ABRASIVE PAPER CLAMPING MECHANISM FOR AN ORBITAL SANDER
US5321913A (en) * 1990-08-17 1994-06-21 Haney Donald E Sander with orbiting platen and abrasive
US20030124961A1 (en) * 2001-08-02 2003-07-03 Haney Donald E. Sanding machine incorporating multiple sanding motions
US7004818B1 (en) 1990-08-17 2006-02-28 Haney Donald E Sander with orbiting platen and abrasive
EP2228174A3 (en) * 2009-03-10 2012-12-19 Makita Corporation Sander

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251329A (en) * 1937-11-06 1941-08-05 Sundstrand Machine Tool Co Rubbing machine
US2428618A (en) * 1945-07-25 1947-10-07 Dispensiere Joseph Abrasive sheet holder
US2464296A (en) * 1947-11-26 1949-03-15 Sundstrand Machine Tool Co Pad attaching means for rubbing machines and the like
US2509561A (en) * 1948-01-16 1950-05-30 Albert J Dremel Clip for holding sanding paper
US2530301A (en) * 1945-09-29 1950-11-14 Sundstard Machine Tool Co Clamp device for rubbing machines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251329A (en) * 1937-11-06 1941-08-05 Sundstrand Machine Tool Co Rubbing machine
US2428618A (en) * 1945-07-25 1947-10-07 Dispensiere Joseph Abrasive sheet holder
US2530301A (en) * 1945-09-29 1950-11-14 Sundstard Machine Tool Co Clamp device for rubbing machines
US2464296A (en) * 1947-11-26 1949-03-15 Sundstrand Machine Tool Co Pad attaching means for rubbing machines and the like
US2509561A (en) * 1948-01-16 1950-05-30 Albert J Dremel Clip for holding sanding paper

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224149A (en) * 1963-12-16 1965-12-21 Eugene M Harrington Hand sander
US3822518A (en) * 1972-09-07 1974-07-09 Rodac Pneumatic Tools Sanding shoe and clip therefor
DE2832424A1 (en) * 1978-07-24 1980-02-14 Licentia Gmbh Portable electric sanding machine - has eccentric sanding disc fixed to motor shaft, clamps for sandpaper, and dust extraction hood
DE3921613A1 (en) * 1988-07-01 1990-01-04 Hitachi Koki Kk ABRASIVE PAPER CLAMPING MECHANISM FOR AN ORBITAL SANDER
US5321913A (en) * 1990-08-17 1994-06-21 Haney Donald E Sander with orbiting platen and abrasive
US5443414A (en) * 1990-08-17 1995-08-22 Haney; Donald E. Sander with orbiting platen and abrasive
US5702287A (en) * 1990-08-17 1997-12-30 Haney; Donald E. Sander with orbiting platen and abrasive
US7004818B1 (en) 1990-08-17 2006-02-28 Haney Donald E Sander with orbiting platen and abrasive
US20030124961A1 (en) * 2001-08-02 2003-07-03 Haney Donald E. Sanding machine incorporating multiple sanding motions
US7198557B2 (en) 2001-08-02 2007-04-03 Haney Donald E Sanding machine incorporating multiple sanding motions
EP2228174A3 (en) * 2009-03-10 2012-12-19 Makita Corporation Sander

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