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US2792862A - Acoustical tile drill - Google Patents

Acoustical tile drill Download PDF

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Publication number
US2792862A
US2792862A US505191A US50519155A US2792862A US 2792862 A US2792862 A US 2792862A US 505191 A US505191 A US 505191A US 50519155 A US50519155 A US 50519155A US 2792862 A US2792862 A US 2792862A
Authority
US
United States
Prior art keywords
drill
land
flute
tool
point
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
Application number
US505191A
Other languages
English (en)
Inventor
Joseph V Emmons
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cleveland Twist Drill Co
Original Assignee
Cleveland Twist Drill Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cleveland Twist Drill Co filed Critical Cleveland Twist Drill Co
Priority to US505191A priority Critical patent/US2792862A/en
Priority to FR1172238D priority patent/FR1172238A/fr
Priority to DEC14380A priority patent/DE1115003B/de
Application granted granted Critical
Publication of US2792862A publication Critical patent/US2792862A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G15/00—Boring or turning tools; Augers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/04—Drills for trepanning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/899—Having inversely angled cutting edge
    • Y10T408/90—Having inversely angled cutting edge and axially extending peripheral cutting spur

Definitions

  • Fig. 2 is a view of the same drill shown in Fig. 1 taken on a plane at right angles to the plane on which Fig. 1 is taken;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Drilling Tools (AREA)
US505191A 1955-05-02 1955-05-02 Acoustical tile drill Expired - Lifetime US2792862A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US505191A US2792862A (en) 1955-05-02 1955-05-02 Acoustical tile drill
FR1172238D FR1172238A (fr) 1955-05-02 1957-02-07 Foret à cannelure unique
DEC14380A DE1115003B (de) 1955-05-02 1957-02-14 Bohrer fuer weiches, nichtmetallisches Fasermaterial, insbesondere fuer Schalldaemmplatten

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US505191A US2792862A (en) 1955-05-02 1955-05-02 Acoustical tile drill
DEC14380A DE1115003B (de) 1955-05-02 1957-02-14 Bohrer fuer weiches, nichtmetallisches Fasermaterial, insbesondere fuer Schalldaemmplatten

Publications (1)

Publication Number Publication Date
US2792862A true US2792862A (en) 1957-05-21

Family

ID=25969172

Family Applications (1)

Application Number Title Priority Date Filing Date
US505191A Expired - Lifetime US2792862A (en) 1955-05-02 1955-05-02 Acoustical tile drill

Country Status (2)

Country Link
US (1) US2792862A (de)
DE (1) DE1115003B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887136A (en) * 1957-09-19 1959-05-19 Republic Aviat Corp Router bit
US2936804A (en) * 1958-06-16 1960-05-17 United Greenfield Corp Twist drill
US3051205A (en) * 1959-05-25 1962-08-28 United Greenfield Corp Twist drill
US4285620A (en) * 1979-06-14 1981-08-25 Mcdonnell Douglas Corporation Symmetrical spur point drill
US4378719A (en) * 1979-01-22 1983-04-05 Burgess Vernon J Saw chain connector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4338050A (en) * 1980-07-07 1982-07-06 The Boeing Company Method and tool for generating holes in composite materials

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB634350A (en) * 1947-03-29 1950-03-15 Armstrong Cork Co Improvements in or relating to augers and like drills
US2675841A (en) * 1951-07-28 1954-04-20 Nat Gypsum Co Drill

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB634350A (en) * 1947-03-29 1950-03-15 Armstrong Cork Co Improvements in or relating to augers and like drills
US2675841A (en) * 1951-07-28 1954-04-20 Nat Gypsum Co Drill

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887136A (en) * 1957-09-19 1959-05-19 Republic Aviat Corp Router bit
US2936804A (en) * 1958-06-16 1960-05-17 United Greenfield Corp Twist drill
US3051205A (en) * 1959-05-25 1962-08-28 United Greenfield Corp Twist drill
US4378719A (en) * 1979-01-22 1983-04-05 Burgess Vernon J Saw chain connector
US4285620A (en) * 1979-06-14 1981-08-25 Mcdonnell Douglas Corporation Symmetrical spur point drill

Also Published As

Publication number Publication date
DE1115003B (de) 1961-10-12

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