US879220A - Tool-holder. - Google Patents

Tool-holder. Download PDF

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Publication number
US879220A
US879220A US26543005A US1905265430A US879220A US 879220 A US879220 A US 879220A US 26543005 A US26543005 A US 26543005A US 1905265430 A US1905265430 A US 1905265430A US 879220 A US879220 A US 879220A
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US
United States
Prior art keywords
tool
holder
groove
stem
mortise
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
US26543005A
Inventor
Wilbur F Tracy
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.)
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 US26543005A priority Critical patent/US879220A/en
Application granted granted Critical
Publication of US879220A publication Critical patent/US879220A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/04—Cutting-off tools
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17761—Side detent
    • Y10T279/17821—Set screw
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder

Definitions

  • WILBUR F TRACY, OF WARREN, MASSACHUSETTS.
  • FIG. 1 is a side elevation of a tool holder embodying my invention.
  • Fig. 2 is a plan view
  • Fig. 8 is a central vertical sectional view.
  • My improved tool holder consists of a stem 1 adapted to be held in the tool post of a lathe or similar metal working machine, and having at one end a head 2, provided with an upturned lug 3 to receive a tightening screw 4 and having beneath the lug 3 a mortise 5 to receive a cutting tool 6.
  • the mortise 5 is open at one end to receive the cutting tool which abuts at the opposite end of the mortise against a vertical wall. 7.
  • the tool holder has an opening 8 in its upper surface immediately behind the lug 8 to expose the inner end of the cutting tool.
  • the thickness of the head 2 exceeds the thickness of the stem 1 forming shoulders 9, 9, and this enlargement of the head over the stem of the holder provides suitable side walls 10, 10, upon each side of the mortise 5, and allows a cutting tool to be used having greater width and rigidity than would be possible in a holder of no greater thickness than the stem 1.
  • the mortise 5 consists of a longitudinal groove formed in the upper edge of the stem.
  • the groove or mortise 5 is partially covered by the lug 3 which connects the side walls of the groove and extends across the groove.
  • the opening 8 at the rear end of the groove allows the groove to be cleared of chips and dirt.
  • a tool holder consisting of a stem adapted to be held in a tool post, and provided with a groove in the center of its upper edge extending rearwardly a short distance from its forward end and having an end wall to receive the contact of the tool held therein, said groove being open at its rear end and having the side walls of the groove reinforced by a lateral increase in the thickness of the stem, a lug uniting said side walls and eX- tending over the forward end of said groove, and a tightening screw held in said lug.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Description

WILBUR F. TRACY, OF WARREN, MASSACHUSETTS.
TOOL-HOLDER.
Specification of Letters Patent.
- Patented Feb. 18, 1908.
Application filed June 15' 1905. Serial No. 265.430.
To all whom it may concern:
Be it known that I, WVILBUR F. TRACY, a citizen of the United States, residing at Warren, in the county of Worcester and Commonwealth of Massachusetts, have invented a new and useful Improvement in a Tool-Holder, of which the following is a specification, accompanied by drawings forming a part of the same, in which Figure 1 is a side elevation of a tool holder embodying my invention. Fig. 2 is a plan view, and Fig. 8 is a central vertical sectional view.
Similar reference letters and figures refer to similar parts in the different views.
My improved tool holder consists of a stem 1 adapted to be held in the tool post of a lathe or similar metal working machine, and having at one end a head 2, provided with an upturned lug 3 to receive a tightening screw 4 and having beneath the lug 3 a mortise 5 to receive a cutting tool 6. The mortise 5 is open at one end to receive the cutting tool which abuts at the opposite end of the mortise against a vertical wall. 7.
The tool holder has an opening 8 in its upper surface immediately behind the lug 8 to expose the inner end of the cutting tool. The thickness of the head 2 exceeds the thickness of the stem 1 forming shoulders 9, 9, and this enlargement of the head over the stem of the holder provides suitable side walls 10, 10, upon each side of the mortise 5, and allows a cutting tool to be used having greater width and rigidity than would be possible in a holder of no greater thickness than the stem 1.
The lateral enlargement of the head extends from the end a short distance beyond the end of the mortise 5, and. the mortise 5 consists of a longitudinal groove formed in the upper edge of the stem. The groove or mortise 5 is partially covered by the lug 3 which connects the side walls of the groove and extends across the groove. The opening 8 at the rear end of the groove allows the groove to be cleared of chips and dirt. By placing the groove at the upper edge of the stem. nearly the entire vertical thickness of the stem is brought beneath the tool, atlording greater strength to the downward pressure upon the tool without unduly increasing the weight of the holder. The upward pressure of the rear end of the holder is received by the tightening screw 4 and this is firmly held in a lug 3 supported by the side walls of the groove which are laterally thickened to furnish the requisite strength and rigidity. By the construction shown I am able to reduce the weight of the holder, at the same time securing strength and rigidity to resist the strains exerted against the cutting tool and prevent jarring or chattering of the tool.
What I claim as my invention and desire to secure by Letters Patent is A tool holder consisting of a stem adapted to be held in a tool post, and provided with a groove in the center of its upper edge extending rearwardly a short distance from its forward end and having an end wall to receive the contact of the tool held therein, said groove being open at its rear end and having the side walls of the groove reinforced by a lateral increase in the thickness of the stem, a lug uniting said side walls and eX- tending over the forward end of said groove, and a tightening screw held in said lug.
WILBUR Fw TRACY.
Vitnesses RUFUS B. FOWLER, PENE OPE OOMBERBACH.
US26543005A 1905-06-15 1905-06-15 Tool-holder. Expired - Lifetime US879220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US26543005A US879220A (en) 1905-06-15 1905-06-15 Tool-holder.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26543005A US879220A (en) 1905-06-15 1905-06-15 Tool-holder.

Publications (1)

Publication Number Publication Date
US879220A true US879220A (en) 1908-02-18

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Family Applications (1)

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US26543005A Expired - Lifetime US879220A (en) 1905-06-15 1905-06-15 Tool-holder.

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