US896503A - Thread-cutter. - Google Patents

Thread-cutter. Download PDF

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Publication number
US896503A
US896503A US37441607A US1907374416A US896503A US 896503 A US896503 A US 896503A US 37441607 A US37441607 A US 37441607A US 1907374416 A US1907374416 A US 1907374416A US 896503 A US896503 A US 896503A
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US
United States
Prior art keywords
teeth
thread
cutter
tap
lead
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
US37441607A
Inventor
Nicholas Zogg
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Individual
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Individual
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 Individual filed Critical Individual
Priority to US37441607A priority Critical patent/US896503A/en
Application granted granted Critical
Publication of US896503A publication Critical patent/US896503A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
    • B23G5/00—Thread-cutting tools; Die-heads
    • B23G5/02—Thread-cutting tools; Die-heads without means for adjustment
    • B23G5/06—Taps
    • 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
    • Y10T408/904—Tool or Tool with support with pitch-stabilizing ridge
    • Y10T408/9046—Tool or Tool with support with pitch-stabilizing ridge including tapered section
    • Y10T408/90467—Tool or Tool with support with pitch-stabilizing ridge including tapered section and relieved cutting edge

Definitions

  • Thread-Cut ter of which the following is a full, clear, and exact description.
  • This invention is designed to provide thread cutting taps and dies with lead cutters, adapted to readily start a thread in a nut, bolt or similar obj ect, without the friction and effort incidental to thread cutters of ordinary construction.
  • FIG. 1 is a side elevation of a tap embodying my invention
  • Fig. 2 is a vertical cross section of a die embodying said invention
  • Fig. 3 is an enlarged vertical section of a cutter, which may be the Outer portion of a tap or the inner portion of a die.
  • the shank 1 of a tap is provided with the usual angular head 2 and relief grooves 3,
  • Segmental cutters or teeth 4 of the ordinary construction are formed in series in the tap, in the usual manner.
  • Lead teeth 5, 6, 7 and 8 are formed on the entering end of the tap 1, and the outer portions of said teeth are cut away, forming end surfaces 9, 10, 11 and 12, respectively. These surfaces are situate back of the apices of the lead teeth, and recede from a line 13 joining the apices Of said teeth toward the axial line of the tap, thereby making a clearance back of the apices of the teeth, and permitting the lead teeth on the entering end of the tap to feed freely into a blank; whereas, in the constructions now in use, the outer surfaces of the lead teeth, which extend in a line inclined to the axis of the cutter, bear against the surface of a blank, and in consequence of the friction caused thereby retard the cutter and prevent the cutting edge of the teeth from freely entering the blank.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)

Description

'line of the cutter.
UNITED STATES PATENT OFFICE.
' NICHOLAS ZOGG, OF NEW YORK, N. Y.
THREAD-CUTTER.
Application filed May 18, 1907.
To all whom it may concern:
Be it known that I, NICHOLAS ZOGG, a citi- Zen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Thread-Cut ter, of which the following is a full, clear, and exact description.
This invention is designed to provide thread cutting taps and dies with lead cutters, adapted to readily start a thread in a nut, bolt or similar obj ect, without the friction and effort incidental to thread cutters of ordinary construction.
In the constructions now in use grooved thread cutters are provided with lead teeth, cut away on their Outer ends to form end surfaces, extending in a lin-e inclined to the axial When in use, the end surfaces of said teeth bear against the part acted upon and prevent the cutting edges of the teeth from feeding freely into a blank. This difliculty is overcome by means of the device illustrated in the accompanying drawings, in which Figure 1 is a side elevation of a tap embodying my invention Fig. 2 is a vertical cross section of a die embodying said invention, and Fig. 3 is an enlarged vertical section of a cutter, which may be the Outer portion of a tap or the inner portion of a die.
As illustrated in the accompanying drawings, the shank 1 of a tap is provided with the usual angular head 2 and relief grooves 3,
1' which extend longitudinally of the tap.
Specification of Letters Patent.
Patented Aug. 18, 1908'.
Serial No. 374,416.
Segmental cutters or teeth 4 of the ordinary construction are formed in series in the tap, in the usual manner. Lead teeth 5, 6, 7 and 8 are formed on the entering end of the tap 1, and the outer portions of said teeth are cut away, forming end surfaces 9, 10, 11 and 12, respectively. These surfaces are situate back of the apices of the lead teeth, and recede from a line 13 joining the apices Of said teeth toward the axial line of the tap, thereby making a clearance back of the apices of the teeth, and permitting the lead teeth on the entering end of the tap to feed freely into a blank; whereas, in the constructions now in use, the outer surfaces of the lead teeth, which extend in a line inclined to the axis of the cutter, bear against the surface of a blank, and in consequence of the friction caused thereby retard the cutter and prevent the cutting edge of the teeth from freely entering the blank.
Having thus described my invention, I
US37441607A 1907-05-18 1907-05-18 Thread-cutter. Expired - Lifetime US896503A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US37441607A US896503A (en) 1907-05-18 1907-05-18 Thread-cutter.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37441607A US896503A (en) 1907-05-18 1907-05-18 Thread-cutter.

Publications (1)

Publication Number Publication Date
US896503A true US896503A (en) 1908-08-18

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Family Applications (1)

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US37441607A Expired - Lifetime US896503A (en) 1907-05-18 1907-05-18 Thread-cutter.

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US (1) US896503A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908022A (en) * 1955-07-20 1959-10-13 Strobel Herbert Tool for cutting screw threads
US2943869A (en) * 1959-08-07 1960-07-05 Obert L Nordin Couplings and safety devices therefor
US3220032A (en) * 1962-04-27 1965-11-30 Balax Inc Thread cutting tap
US4023914A (en) * 1976-01-15 1977-05-17 Holmes Horace D Locking thread forming tap
US5033919A (en) * 1989-10-31 1991-07-23 Choe Cha Y Stabilized tap with air release
US5664915A (en) * 1996-03-22 1997-09-09 Hawke; Terrence C. Tap and method of making a tap with selected size limits
US20110076107A1 (en) * 2009-09-25 2011-03-31 Yg-1 Co., Ltd. Tap with Dual Relief Technology

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908022A (en) * 1955-07-20 1959-10-13 Strobel Herbert Tool for cutting screw threads
US2943869A (en) * 1959-08-07 1960-07-05 Obert L Nordin Couplings and safety devices therefor
US3220032A (en) * 1962-04-27 1965-11-30 Balax Inc Thread cutting tap
US4023914A (en) * 1976-01-15 1977-05-17 Holmes Horace D Locking thread forming tap
US5033919A (en) * 1989-10-31 1991-07-23 Choe Cha Y Stabilized tap with air release
US5664915A (en) * 1996-03-22 1997-09-09 Hawke; Terrence C. Tap and method of making a tap with selected size limits
US20110076107A1 (en) * 2009-09-25 2011-03-31 Yg-1 Co., Ltd. Tap with Dual Relief Technology

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