US2865147A - Pumicing stone - Google Patents

Pumicing stone Download PDF

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Publication number
US2865147A
US2865147A US537957A US53795755A US2865147A US 2865147 A US2865147 A US 2865147A US 537957 A US537957 A US 537957A US 53795755 A US53795755 A US 53795755A US 2865147 A US2865147 A US 2865147A
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Prior art keywords
stone
grooves
pumicing
pumice
orthogonal
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Expired - Lifetime
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US537957A
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Grandemange Georges
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Priority to US537957A priority Critical patent/US2865147A/en
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    • 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

Definitions

  • the principal object of the invention is to obtain a stone useful for pumicing the hardened parts of the body such as the feet.
  • Another object of the ⁇ invention is to obtain a pumicestone provided with intersecting orthogonal and oblique grooves which improve and increase the efficiency.
  • Still another object of the invention is to improve a pumice-stone by forming a rough surface for said stone.
  • Still another object of the invention is to obtain an improved pumice-stone with rubbing elements obtained from inclined grooves of different depth allowing longer use of the stone with ⁇ constant efficiency.
  • Figure l is a plan view; and v Figure 2 is a section on line 2-2 of Figure 1.
  • Figure 1 of the drawing shows a pumice-stone 1 which is of rectangular and iiat form.
  • the edge on one side is bevelled at 2 and the same side is channeled by parallel and oblique lgrooves 3.
  • the later grooves are crossed at right angle by parallel grooves 4 which are vertical and of :same depth as grooves 3.
  • Grooves 3 and 4 form a net of orthogonal lines forming square protuberances 5 having sides of different angles.
  • the number and angle of grooves may vary to a large extent.
  • the protuberances may be limited to only part of the surface of the pumicestone.
  • the pumice-stone is used in the usual manner for pumicing the hardened parts of the body such as the feet.
  • the grooves keep their form until the stone is worn to their bottom.
  • the rubbing elements can be formed on more than one surface of a pumicestone.
  • a pumice stone comprising, a monolithic body having on atleast one face thereof a set of parallel orthogonal grooves, and a set of grooves bounded by parallel planes which are oblique to the face of the stone and intersect thev aforesaid orthogonal grooves at right angles, said grooves being of the same depth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Adornments (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Finishing Walls (AREA)

Description

United States Patent O PUMICING STONE Georges Grandemange, Nice, France Application October 3, 1955, Serial No. 537,957 2 Claims. ('Cl. 51-204) The present invention pertains to a pumicing stone.
The principal object of the invention is to obtain a stone useful for pumicing the hardened parts of the body such as the feet.
Another object of the` invention is to obtain a pumicestone provided with intersecting orthogonal and oblique grooves which improve and increase the efficiency.
Still another object of the invention is to improve a pumice-stone by forming a rough surface for said stone.
Still another object of the invention is to obtain an improved pumice-stone with rubbing elements obtained from inclined grooves of different depth allowing longer use of the stone with `constant efficiency.
yThe above objects are obtained in forming grooves on a surface of a pumicestone, one set of the grooves being parallel and orthogonal and another set of grooves intersecting the aforesaid grooves at right angles being dened by oblique parallel planes forming a rough surface of protuberances of different angles and shape; the grooved surface being formed on one or more sides.
The invention is fully disclosed by way of example in the following description and in the accompanying drawings n which:
Figure l is a plan view; and v Figure 2 is a section on line 2-2 of Figure 1.
Reference to these views will now be made by use of like characters which .are employed to designate corresponding parts throughout.
Figure 1 of the drawing shows a pumice-stone 1 which is of rectangular and iiat form. The edge on one side is bevelled at 2 and the same side is channeled by parallel and oblique lgrooves 3. The later grooves are crossed at right angle by parallel grooves 4 which are vertical and of :same depth as grooves 3. Grooves 3 and 4 form a net of orthogonal lines forming square protuberances 5 having sides of different angles. The number and angle of grooves may vary to a large extent. The protuberances may be limited to only part of the surface of the pumicestone.
In the use of the invention, the pumice-stone is used in the usual manner for pumicing the hardened parts of the body such as the feet. The grooves keep their form until the stone is worn to their bottom. The rubbing elements can be formed on more than one surface of a pumicestone.
Although `a specific embodiment of the invention has been illustrated and described, it will be understood that various alterations in the details of construction may be made without departing from the scope of the invention as indicated by the appended claims.
What I claim is:
l. A pumice stone comprising, a monolithic body having on atleast one face thereof a set of parallel orthogonal grooves, and a set of grooves bounded by parallel planes which are oblique to the face of the stone and intersect thev aforesaid orthogonal grooves at right angles, said grooves being of the same depth.
2. The device as set forth in claim 1 in which the outer edges of said monolithic body .are inclined at an angle other than References Cited in the tile of this patent. UNITED STATES PATENTS 1,896,946 Gauss Feb. 7, 1933 2,120,483 Burger June 14, 1938 2,295,693 Seigh Sept. 15, 1942 2,594,959 Masters Apr. 29, 1952 2,720,732 Eubanks Oct. 18, 1955
US537957A 1955-10-03 1955-10-03 Pumicing stone Expired - Lifetime US2865147A (en)

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US537957A US2865147A (en) 1955-10-03 1955-10-03 Pumicing stone

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US537957A US2865147A (en) 1955-10-03 1955-10-03 Pumicing stone

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US2865147A true US2865147A (en) 1958-12-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590926A (en) * 1982-03-16 1986-05-27 Olivier Courtin Hand-held massager
US20110269379A1 (en) * 2010-04-29 2011-11-03 Richard Pascoe Dental sharpening device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1896946A (en) * 1930-05-22 1933-02-07 Studebaker Corp Rubbing block
US2120483A (en) * 1936-06-26 1938-06-14 William L Burger Rubbing brick
US2295693A (en) * 1942-04-07 1942-09-15 Wallace D Seigh Abrading implement
US2594959A (en) * 1951-07-19 1952-04-29 Masters Aaron Hair remover with central feed of skin lotion
US2720732A (en) * 1953-09-18 1955-10-18 James A Eubanks Griddle stone holder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1896946A (en) * 1930-05-22 1933-02-07 Studebaker Corp Rubbing block
US2120483A (en) * 1936-06-26 1938-06-14 William L Burger Rubbing brick
US2295693A (en) * 1942-04-07 1942-09-15 Wallace D Seigh Abrading implement
US2594959A (en) * 1951-07-19 1952-04-29 Masters Aaron Hair remover with central feed of skin lotion
US2720732A (en) * 1953-09-18 1955-10-18 James A Eubanks Griddle stone holder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590926A (en) * 1982-03-16 1986-05-27 Olivier Courtin Hand-held massager
US20110269379A1 (en) * 2010-04-29 2011-11-03 Richard Pascoe Dental sharpening device
US8764522B2 (en) * 2010-04-29 2014-07-01 Richard Pascoe Dental sharpening device

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