US1935798A - Method of producing cutting and grinding tools - Google Patents

Method of producing cutting and grinding tools Download PDF

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Publication number
US1935798A
US1935798A US650141A US65014133A US1935798A US 1935798 A US1935798 A US 1935798A US 650141 A US650141 A US 650141A US 65014133 A US65014133 A US 65014133A US 1935798 A US1935798 A US 1935798A
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United States
Prior art keywords
coating
support
grinding tools
grinding
producing cutting
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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
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US650141A
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Hopf Paul
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for

Definitions

  • grinding tools which. are either produced ceramically from solid grinding material, or composed of a copper support to which the grinding material is 6 connected by pressure or other suitable means.
  • the first kind of grinding tools have the disadvantage of losing their shape during use, and neither kind of tool is suitable for all kinds oi. work, particularly such as requires tools of a very l fine character capable of resisting bending stresses.
  • the object of the present invention is to produce very fine cutting and grinding tools which will. at the same time be sufllciently resistive for 16 operating on hard enamel and porcelain without bending, and the invention consists in employing a support of hard metal such as iron, steel (in-- cluding hardened steel), coating said support with a soft metal and connecting the grinding 20 material to the support through the medium of the coating.
  • hard metal such as iron, steel (in-- cluding hardened steel)
  • the coating may be applied to the support either galvanically or by dipping, soldering or p y
  • the grinding material may consist of diamond, silica, carbide or like granules and pressed or hammered into the coating or otherwise attached thereto in known manner.
  • a coating of hard metal, capable of resisting acids and bases, is applied to the tool, either galvanically or by spraying, in order to secure the grinding material eilectively to the support and to protect the soft metal from abrasive and corrosive influences.
  • a method of securing grinding material to a support of hard metal consisting in coating the support with soft metal, pressing the grinding material into the coating, and plating the tool thus-obtained galvanically with a hard, noncorrosive metal.

Description

Patented Nov. 21, 1933 UNITED STATES METHOD or raonucmo CUTTING Ann GRINDING TOOLS Paul Hopi, Berlin-Lichterlelde, Germany No Drawing. Application January 4, 1933, Serial No. 650,141, and in Ge many December 2,
2 Claims. (o1. 51-278)- In ordinary dental practice, grinding tools are employed which. are either produced ceramically from solid grinding material, or composed of a copper support to which the grinding material is 6 connected by pressure or other suitable means.
The first kind of grinding tools have the disadvantage of losing their shape during use, and neither kind of tool is suitable for all kinds oi. work, particularly such as requires tools of a very l fine character capable of resisting bending stresses.
The object of the present invention is to produce very fine cutting and grinding tools which will. at the same time be sufllciently resistive for 16 operating on hard enamel and porcelain without bending, and the invention consists in employing a support of hard metal such as iron, steel (in-- cluding hardened steel), coating said support with a soft metal and connecting the grinding 20 material to the support through the medium of the coating.
The coating may be applied to the support either galvanically or by dipping, soldering or p y The grinding material may consist of diamond, silica, carbide or like granules and pressed or hammered into the coating or otherwise attached thereto in known manner. Finally a coating of hard metal, capable of resisting acids and bases, is applied to the tool, either galvanically or by spraying, in order to secure the grinding material eilectively to the support and to protect the soft metal from abrasive and corrosive influences.
I claim:
1. A method 0! securing granular grinding material to a support of hard metal, consisting in coating the support with soft metal, pressing the grinding material into the coating, and coating 7 the tool thus obtained with a hard, noncorrosive metal.
2. A method of securing grinding material to a support of hard metal, consisting in coating the support with soft metal, pressing the grinding material into the coating, and plating the tool thus-obtained galvanically with a hard, noncorrosive metal.
Pm. norm
US650141A 1932-12-02 1933-01-04 Method of producing cutting and grinding tools Expired - Lifetime US1935798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1935798X 1932-12-02

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US1935798A true US1935798A (en) 1933-11-21

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ID=7750215

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US650141A Expired - Lifetime US1935798A (en) 1932-12-02 1933-01-04 Method of producing cutting and grinding tools

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424140A (en) * 1942-01-22 1947-07-15 Norton Co Method of making abrasive articles
US2427565A (en) * 1944-09-25 1947-09-16 Bay State Abrasive Products Co Metal bonded abrasive
DE1236345B (en) * 1960-04-27 1967-03-09 Bendix Corp Skid for aircraft with wear-resistant surface

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2424140A (en) * 1942-01-22 1947-07-15 Norton Co Method of making abrasive articles
US2427565A (en) * 1944-09-25 1947-09-16 Bay State Abrasive Products Co Metal bonded abrasive
DE1236345B (en) * 1960-04-27 1967-03-09 Bendix Corp Skid for aircraft with wear-resistant surface

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