US3260254A - Abrading tool - Google Patents

Abrading tool Download PDF

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Publication number
US3260254A
US3260254A US436120A US43612065A US3260254A US 3260254 A US3260254 A US 3260254A US 436120 A US436120 A US 436120A US 43612065 A US43612065 A US 43612065A US 3260254 A US3260254 A US 3260254A
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bore
shafts
retaining
spring
retained
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US436120A
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Robert C Collins
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/181—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools using cutters loosely mounted on a turning tool support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material

Definitions

  • a further object of the invention is a helical spring which serves the dual purpose of an outer safety guard and for simultaneously holding the five shafts slidably retained in a toroidal collar of the tool.
  • a further object of the invention comprehends the provision of a rectangular slot in the outer end of each shaft for retaining an edgewise wound helical spring therein.
  • FIG. 1 is a side elevation of the abrading tool.
  • FIG. 2 is a bottom plan view of the tool shown in FIG. 1.
  • FIG. 3 is a cross sectional side elevation taken through section line 3-3, FIG. 2.
  • FIG. 4 is a perspective view of the retaining spring shown in FIGS. 1, 2, and 3.
  • a shank member 1 is intended to be secured in and rotated by a conventional chuck 2 of a power drill or equivalent device.
  • the shank 1 has a coaxial enlarged lower end 3 into which the upper end of a conical drive spring 4 is securely threaded.
  • the lower end of spring 4 is threaded into the threaded coaxial bore of the toroidal collar 5, better shown in FIGS. 2 and 3.
  • Each shaft 6 is slidably retained in equi-spaced radial bores in collar 5, as shown. Each shaft 6 has journalled thereon three toothed abrading discs 7 which are spaced by washer-like spacers 8.
  • each shaft 6 is provided with a transverse rectangular groove 9 for retaining a pre-tensioned edgewise wound spring guard 10, which comprises three turns of tempered metal, as shown.
  • the inside diameter is a predetermined dimension smaller than the circle described by the inner side of the rectangular grooves 9.
  • a rotary abrading tool comprising a body member having a bore therein for retaining a coupling means
  • each of said shafts having a transverse slot in the outer end thereof
  • a circular multi-turn spring means retained in each of said slots for retaining each of said shafts in each corresponding said bore said spring means comprising .a pre-tensioned edgewise spring guard having a pre-determined dimension smaller than a circle described by the inner sides of said slots,
  • a rotary abrading tool comprising a body member having a bore therein for retaining a coupling means
  • each of said shafts having a transverse slot in the outer end thereof
  • said spring means comprising a predetermined number of close edgewise wound metal ribbon having a substantially rectangular cross section whereby said spring means has a pre-determined dimension smaller than a circle described by the inner sides of said slots,
  • said body member having a plurality of like equi-spaced radial bores in the outer periphery thereof,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mining & Mineral Resources (AREA)
  • Machine Tool Units (AREA)

Description

July 12, 1966 R. c COLLINS ABRADING TOOL Filed March 1, 1965 United States Patent 3,260,254 ABRADING TOOL Robert C. Collins, 746 NE. 67th St., Miami, Fla.
Filed Mar. 1, 1965, Ser. No. 436,120 3 Claims. (Cl. 125-5) A further object of the invention is a helical spring which serves the dual purpose of an outer safety guard and for simultaneously holding the five shafts slidably retained in a toroidal collar of the tool.
A further object of the invention comprehends the provision of a rectangular slot in the outer end of each shaft for retaining an edgewise wound helical spring therein.
These and other objects and advantages in one embodiment of the invention are shown and described in the appended specification and drawing, in which:
FIG. 1 is a side elevation of the abrading tool.
FIG. 2 is a bottom plan view of the tool shown in FIG. 1.
FIG. 3 is a cross sectional side elevation taken through section line 3-3, FIG. 2.
FIG. 4 is a perspective view of the retaining spring shown in FIGS. 1, 2, and 3.
Referring to FIGS. 1, 2, and 3, a shank member 1 is intended to be secured in and rotated by a conventional chuck 2 of a power drill or equivalent device. The shank 1 has a coaxial enlarged lower end 3 into which the upper end of a conical drive spring 4 is securely threaded. The lower end of spring 4 is threaded into the threaded coaxial bore of the toroidal collar 5, better shown in FIGS. 2 and 3.
Five shafts 6 are slidably retained in equi-spaced radial bores in collar 5, as shown. Each shaft 6 has journalled thereon three toothed abrading discs 7 which are spaced by washer-like spacers 8.
The outer end of each shaft 6 is provided with a transverse rectangular groove 9 for retaining a pre-tensioned edgewise wound spring guard 10, which comprises three turns of tempered metal, as shown.
In operation and when the spring 10 is in its relaxed position, the inside diameter is a predetermined dimension smaller than the circle described by the inner side of the rectangular grooves 9.
When the shafts 6 are slidably positioned in collar and the abrading discs 7 and the washers 8 are positioned for rotation on the shafts 6 then the spring is forcibly enlarged to engage all five slots 9, which will result in urging each axle into its innermost proper position with considerable force.
It is also apparent that when the discs 7 or shaft 6 require replacement the ring may likewise be expanded for removal.
It is now also apparent that a multi-tum spring formed from round wire or wire of each of several shapes will 3,260,254 Patented July 12, 1966 serve equally well as the edgewise wound spring previously described.
The results of the tool are substantially the same as described in applicants aforesaid application except for the smooth non-damaging nature of spring 10 as a guard and the ease with which worn parts may be replaced.
It is understood that certain modifications in the construction, utilizing the features above described, are intended to come within the scope of the appended claims.
Having described my invention, I claim:
1. A rotary abrading tool comprising a body member having a bore therein for retaining a coupling means,
a helical spring coupling secured by one end portion thereof in said bore coaxial therewith and the opposite end thereof terminating in a straight shank substantially coaxial with said bore,
a plurality of shafts retained in and projecting from said body member with the axes thereof in equispaced radial relation to the said axis of said bore and in a plane normal thereto,
each of said shafts having a transverse slot in the outer end thereof,
a circular multi-turn spring means retained in each of said slots for retaining each of said shafts in each corresponding said bore said spring means comprising .a pre-tensioned edgewise spring guard having a pre-determined dimension smaller than a circle described by the inner sides of said slots,
a like plurality of like abrading discs journalled for rotation on each of said shafts whereby the latter will rotate and abrade a substantially planar surface in contact therewith when said shank is rotated.
2. A rotary abrading tool comprising a body member having a bore therein for retaining a coupling means,
a helical spring coupling secured by one end portion thereof in said bore coaxial therewith and the opposite end thereof terminating in a straight shank substantially coaxial with said bore,
a plurality of shafts retained in .and projecting from said body with the axes thereof in equi-spaced radial relation to the said axis of said bore and in a plane normal thereto,
each of said shafts having a transverse slot in the outer end thereof,
a circular multi-turn pretensioned spring means retained in each of said slots for retaining each of said shafts in each corresponding said bore,
said spring means comprising a predetermined number of close edgewise wound metal ribbon having a substantially rectangular cross section whereby said spring means has a pre-determined dimension smaller than a circle described by the inner sides of said slots,
a like plurality of like abrading discs journalled for rotation on each of said shafts whereby the latter will rotate and abrade a substantially planar surface in contact therewith when said shank is rotated.
3. In an abrading tool of the character described a generally cylindrical body member adapted to be rotated about the axis thereof,
said body member having a plurality of like equi-spaced radial bores in the outer periphery thereof,
a plurality of like shafts slidably retained in each of said bores by one end portion thereof abrading discs journalled for rotation on said shafts,
References Cited by the Examiner UNITED STATES PATENTS 2,450,425 10/1948 Frisby 85-88 5 3,080,771 3/1963 Baldwin 8.5-8.8
FOREIGN PATENTS 10,042 4/1913 Great Britain.
10 HAROLD D. WHITEHEAD, Primary Examiner.
Lad

Claims (1)

1. A ROTARY ABRADING TOOL COMPRISING A BODY MEMBER HAVING A BORE THEREIN FOR RETAINING A COUPLING MEANS, A HELICAL SPRING COUPLING SECURED BY ONE END PORTION THEREOF IN SAID BORE COAXIAL THEREWITH AND THE OPPOSITE END THEREOF TERMINATING IN A STRAIGHT SHANK SUBSTANTIALLY COAXIAL WITH SAID BORE, A PLURALITY OF SHAFTS RETAINED IN AND PROJECTING FROM SAID BODY MEMBER WITH THE AXES THEREOF IN EQUISPACED RADIAL RELATION TO THE SAID AXIS OF SAID BORE AND IN A PLANE NORMAL THERETO, EACH OF SAID SHAFTS HAVING A TRANSVERSE SLOT IN THE OUTER END THEREOF, A CIRCULAR MULTI-TURN SPRING MEANS RETAINED IN EACH OF SAID SLOTS FOR RETAINING EACH OF SAID SHAFT IN EACH
US436120A 1965-03-01 1965-03-01 Abrading tool Expired - Lifetime US3260254A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634188A (en) * 1984-04-18 1987-01-06 Dynapac Ab Rotary tool
US5980371A (en) * 1997-03-17 1999-11-09 The Desmond-Stephan Mfg. Co. Abrading tool
US20040140107A1 (en) * 2003-01-09 2004-07-22 Julien Jomphe Sports surface reconditioner

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191310042A (en) * 1913-04-29 1914-04-09 Frederick James Johnston A Device for Preventing the Splitting or Breaking of the Calyx of a Flowering Carnation or the like.
US2450425A (en) * 1945-05-03 1948-10-05 Ramsey Accessories Mfg Corp Retaining ring
US3080771A (en) * 1960-03-28 1963-03-12 Gen Motors Corp Vibration damping mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191310042A (en) * 1913-04-29 1914-04-09 Frederick James Johnston A Device for Preventing the Splitting or Breaking of the Calyx of a Flowering Carnation or the like.
US2450425A (en) * 1945-05-03 1948-10-05 Ramsey Accessories Mfg Corp Retaining ring
US3080771A (en) * 1960-03-28 1963-03-12 Gen Motors Corp Vibration damping mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634188A (en) * 1984-04-18 1987-01-06 Dynapac Ab Rotary tool
US5980371A (en) * 1997-03-17 1999-11-09 The Desmond-Stephan Mfg. Co. Abrading tool
US20040140107A1 (en) * 2003-01-09 2004-07-22 Julien Jomphe Sports surface reconditioner
US7131500B2 (en) * 2003-01-09 2006-11-07 Julien Jomphe Sports surface reconditioner

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