US180561A - Improvement in expanding metal-drills - Google Patents

Improvement in expanding metal-drills Download PDF

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Publication number
US180561A
US180561A US180561DA US180561A US 180561 A US180561 A US 180561A US 180561D A US180561D A US 180561DA US 180561 A US180561 A US 180561A
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Prior art keywords
cutters
drills
improvement
stock
expanding metal
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Expired - Lifetime
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03—Boring heads
    • B23B29/034—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings
    • B23B29/03403—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing
    • B23B29/03425—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by means of gears and racks
    • 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
    • Y10T408/83—Tool-support with means to move Tool relative to tool-support
    • Y10T408/85—Tool-support with means to move Tool relative to tool-support to move radially
    • Y10T408/856—Moving means including pinion engaging rack-like surface of Tool

Definitions

  • the invention consists of two cutters fixed in the stock to slide forward and backward transversely, the cutters being slotted obliquely and reversely to each other, and having the fasteningbolt by which they are secured to the stock fitted in said slots, and also fitted in a vertical slot in the stock, so that by shifting the bolt along the slots in one direction the cutters will be adjusted outward by shifting the bolt the other way they will be adjusted inward.
  • Figure l is a side elevation of my improved drill.
  • Fig. 2 is a section on line w of Fig. 1.
  • Figs. 3 and 5 are side elevations of the cutters, and
  • Fig. 4 is a side elevation of the l stock without the cutters.
  • the stock has a wide transverse groove, a, on each side, in which the cutters t, and a slot, b, inV which the bolt its, and each cutter has an oblique slot, d, which the bolt also passes through, the slots being arranged reversely to each other as to their inclination, so that it pushes the cutters outward when it is shifted downward, and draws them inward when it is shifted upward.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)

Description

UNITED STATES PATENT OEEIGEI PATRICK DUFFY, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND JAMES F. POWERS, OF SAME PLACE.
IMPROVEMENT IN EXPANDING METAL-DRILLS.
Specification forming part of Letters Patent N o. l 80,561, dated August 1, 1876; application filed July 11, 1876.
To all whom it may concern:
Be it known that I, PATRICK DUEEY, of New Bedford, in the county of Bristol and State of Massachusetts, have invented a new and Improved Expanding Drill, of which the following is a specification:
The invention consists of two cutters fixed in the stock to slide forward and backward transversely, the cutters being slotted obliquely and reversely to each other, and having the fasteningbolt by which they are secured to the stock fitted in said slots, and also fitted in a vertical slot in the stock, so that by shifting the bolt along the slots in one direction the cutters will be adjusted outward by shifting the bolt the other way they will be adjusted inward.
Figure l is a side elevation of my improved drill. Fig. 2 is a section on line w of Fig. 1. Figs. 3 and 5 are side elevations of the cutters, and Fig. 4 is a side elevation of the l stock without the cutters.
Similar letters of reference indicate corresponding parts.
4A represents the stock B and C, the cutters, and D the fastening and adjusting bolt. The stock has a wide transverse groove, a, on each side, in which the cutters t, and a slot, b, inV which the bolt its, and each cutter has an oblique slot, d, which the bolt also passes through, the slots being arranged reversely to each other as to their inclination, so that it pushes the cutters outward when it is shifted downward, and draws them inward when it is shifted upward.
, Having' thus described my inventiomlclaim as new and desire to secure by Letters Patent- The combination of the stock A, having the grooves a and slot b, cutters B C, having the reverscly-inclined slots d, and the fastening and adjusting bolt D, substantially as specified.
PATRICK DUFFY.
US180561D Improvement in expanding metal-drills Expired - Lifetime US180561A (en)

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Publication Number Publication Date
US180561A true US180561A (en) 1876-08-01

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US180561D Expired - Lifetime US180561A (en) Improvement in expanding metal-drills

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039295A (en) * 1975-04-12 1977-08-02 Erwin Hochmuth Groove cutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039295A (en) * 1975-04-12 1977-08-02 Erwin Hochmuth Groove cutter

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