US968701A - Thread-cutting die. - Google Patents

Thread-cutting die. Download PDF

Info

Publication number
US968701A
US968701A US32440306A US1906324403A US968701A US 968701 A US968701 A US 968701A US 32440306 A US32440306 A US 32440306A US 1906324403 A US1906324403 A US 1906324403A US 968701 A US968701 A US 968701A
Authority
US
United States
Prior art keywords
die
thread
chasers
yoke
head
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
US32440306A
Inventor
William Scott
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
Original Assignee
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 US32440306A priority Critical patent/US968701A/en
Application granted granted Critical
Publication of US968701A publication Critical patent/US968701A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B23B29/03407—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by means of screws and nuts
    • B23B29/0341—Cartridges
    • 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
    • Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
    • Y10T408/551—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support with means actuated by work to release Tool from fixed position in Tool support
    • Y10T408/552—Adapted to engage work at tool-axis
    • 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
    • Y10T408/852—Tool-support with means to move Tool relative to tool-support to move radially with Tool releasing trigger
    • 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
    • Y10T408/858—Moving means including wedge, screw or cam
    • 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
    • Y10T408/858—Moving means including wedge, screw or cam
    • Y10T408/8588—Axially slidable moving-means

Definitions

  • the present invention relates to a die for cutting screw threads, and is embodied in an expanding die, the purpose being to cause the chasers to disengage from the'material by a lateral movement after the threads are cut, so that the material can be withdrawn from the die without reversing the lathe.
  • a further feature of the invention consists in means for causing the chasers to disengage automatically, the disengaging means being adjustable so as to operate after any desired length of thread has been out.
  • a further feature of the invention consists in means for adjusting, to a slight degree, the position of the chasers when closed ready for operation, so that a variation in the thread diameter is provided for, thereby affording provision for a tight or loose fit without departing materially from the standard size.
  • the die head is provided with transverse guides for the chasers which, in turn, are caused to move toward each other in said guides by means of a yoke pivotally connected with the head and having inclined surfaces at opposite sides to engage the outer ends of the chasers.
  • the yoke is of substantial strength and is extended around the body of the die, so that when closed in upon the.
  • the chasers it forms a solid abutment therefor, capable of resisting all the lateral strain due to the thread cutting operation.
  • the yoke is conveniently located for operation by hand in either direction, and is also arranged so as to be connected with a member longitudinally movable with relation to the die head, and in the path of the material to be operated upon, so that the material itself, at the finish of the thread cutting operation, will act to withdraw the yoke and permit the spreading of the chasers in response to the action of a spring or springs with which they are provided for the purpose.
  • Figure 1 is a perspective view of a thread cutting die embodying the invention
  • Fig. 2 is a vertical,-longitudinal section, through the axis of the die
  • Fig. 3 is a horizontal, longitudinal section through the axis of the die
  • Fig. 4 is a front elevation showing the die closed
  • Fig. 5 is a similar view showing the die open or expanded.
  • the die a is herein shown as a rectangular block of metal cast integral with the supporting shank a and formed hollow to permit the entrance of the material upon which the thread is to be cut.
  • the head a is provided at the front with guides a and at which are shown as V-shaped tracks to fit into corresponding V-shaped grooves 6 formed along the top and bottom of the chasers b.
  • the said chasers are shown as acted upon by springs b which are herein shown as formed of a single wire bent around a support a, indicated as a bolt screwed into the head at the back part of one of the guides at To close the die, that is to say, to bring the chasers into proper position to act upon the material, the outer ends of the chaser members 6 are acted upon by wedges cwhich are herein shown as inclined surfaces formed at the inner sides of a yoke c which is pivotally supported in a bore or opening through the die head a.
  • this member in the form of a yoke extending around the three sides of the head a, it is not only accessible for manipulation, but can be made of great strength so as to resist all the strain which is brought to bear to separate the dies in the thread cutting operation.
  • the construction is sus ceptible of minor adjustment, the upper ends of the yoke 0 being supported upon a bolt 0 which extends through the bearing in the die head, one end of said bolt being provided with a screw thread 0 cooperating with a thread in one of the yoke members, so that by turning the said bolt, the upper ends of the yoke can be sprung together to a slight extent, thereby bringing the inclined surfaces closer to the ends of the chasers and causing the chasers to be moved nearer to gether.
  • the bolt-head c is in the formof a screw head, and the said member may further be provided with calibrations 0 to indicate the amount of adjustment, thereby practically constituting a micrometer screw.
  • a locking screw 0 may be employed, the said screw being shown as extending through an opening in the end of the bolt 0 which is split so as to be slightly expanded through the action of the screw 0. 7
  • the yoke is connected with a supple mental actuating member 0?, herein shown as a rod having an engaging end portion (Z which stands in the path of the material, passing into the die when being threaded;
  • the said member at is herein shown as adjustably connected with-a cross arm 6 which,
  • the member d is longitudinally adjustable with relation to the member e and is held in its adjusted position by means of a set screw 6*, shown as extending longitudinally into the member 6,
  • the member d may, therefore, be set to the outside of the die head, the side members of the said yoke having inclined surfaces to cooperate with the chaser members; and means acting on said yoke at its open ends to draw the said ends together for the purpose of adjustment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food-Manufacturing Devices (AREA)

Description

W. SCOTT.
THREAD CUTTING DIE. APPLICATION H'Lm) JULY 2,1906.
Patented Aug. 30, 1910.
WILLIAM SCOTT, OF MEDFORD, MASSACHUSETTS.
THREAD-CUTTING DIE.
Specification of Letters Patent. Patented Aug. 30, 1910.
Application filed July 2, 1906. Serial No. 324,403.
To all whom it may concern:
Be it known that I, IVILLIAM Soon, a citizen of the United States, residing in Medford, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Thread-Cutting Dies, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.
The present invention relates to a die for cutting screw threads, and is embodied in an expanding die, the purpose being to cause the chasers to disengage from the'material by a lateral movement after the threads are cut, so that the material can be withdrawn from the die without reversing the lathe.
A further feature of the invention consists in means for causing the chasers to disengage automatically, the disengaging means being adjustable so as to operate after any desired length of thread has been out.
A further feature of the invention consists in means for adjusting, to a slight degree, the position of the chasers when closed ready for operation, so that a variation in the thread diameter is provided for, thereby affording provision for a tight or loose fit without departing materially from the standard size.
In accordance with the invention, the die head is provided with transverse guides for the chasers which, in turn, are caused to move toward each other in said guides by means of a yoke pivotally connected with the head and having inclined surfaces at opposite sides to engage the outer ends of the chasers. The yoke is of substantial strength and is extended around the body of the die, so that when closed in upon the.
chasers, it forms a solid abutment therefor, capable of resisting all the lateral strain due to the thread cutting operation. The yoke is conveniently located for operation by hand in either direction, and is also arranged so as to be connected with a member longitudinally movable with relation to the die head, and in the path of the material to be operated upon, so that the material itself, at the finish of the thread cutting operation, will act to withdraw the yoke and permit the spreading of the chasers in response to the action of a spring or springs with which they are provided for the purpose. 1
Figure 1 is a perspective view of a thread cutting die embodying the invention; Fig. 2 is a vertical,-longitudinal section, through the axis of the die; Fig. 3 is a horizontal, longitudinal section through the axis of the die; Fig. 4 is a front elevation showing the die closed; and Fig. 5 is a similar view showing the die open or expanded.
The die a is herein shown as a rectangular block of metal cast integral with the supporting shank a and formed hollow to permit the entrance of the material upon which the thread is to be cut. The head a is provided at the front with guides a and at which are shown as V-shaped tracks to fit into corresponding V-shaped grooves 6 formed along the top and bottom of the chasers b. The said chasers are shown as acted upon by springs b which are herein shown as formed of a single wire bent around a support a, indicated as a bolt screwed into the head at the back part of one of the guides at To close the die, that is to say, to bring the chasers into proper position to act upon the material, the outer ends of the chaser members 6 are acted upon by wedges cwhich are herein shown as inclined surfaces formed at the inner sides of a yoke c which is pivotally supported in a bore or opening through the die head a. By making this member in the form of a yoke extending around the three sides of the head a, it is not only accessible for manipulation, but can be made of great strength so as to resist all the strain which is brought to bear to separate the dies in the thread cutting operation. The construction, furthermore, is sus ceptible of minor adjustment, the upper ends of the yoke 0 being supported upon a bolt 0 which extends through the bearing in the die head, one end of said bolt being provided with a screw thread 0 cooperating with a thread in one of the yoke members, so that by turning the said bolt, the upper ends of the yoke can be sprung together to a slight extent, thereby bringing the inclined surfaces closer to the ends of the chasers and causing the chasers to be moved nearer to gether.
In the construction shown, the bolt-head c is in the formof a screw head, and the said member may further be provided with calibrations 0 to indicate the amount of adjustment, thereby practically constituting a micrometer screw.
In order to lock the parts firmly together.
after adjustment has been made, a locking screw 0 may be employed, the said screw being shown as extending through an opening in the end of the bolt 0 which is split so as to be slightly expanded through the action of the screw 0. 7
In order that the opening of the die may be automatic, so that the chasers' b will expand and free themselves from the material after the desired length of thread has been cut, the yoke is connected with a supple mental actuating member 0?, herein shown as a rod having an engaging end portion (Z which stands in the path of the material, passing into the die when being threaded; The said member at is herein shown as adjustably connected with-a cross arm 6 which,
in turn, has links 6 pivotally connected at 6 with the sides of the yoke 0 The member d is longitudinally adjustable with relation to the member e and is held in its adjusted position by means of a set screw 6*, shown as extending longitudinally into the member 6, The member d may, therefore, be set to the outside of the die head, the side members of the said yoke having inclined surfaces to cooperate with the chaser members; and means acting on said yoke at its open ends to draw the said ends together for the purpose of adjustment.
, In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.
WILLIAM SCOTT. Witnesses M. E. COVENEY, H. J. LIVERMORE.
US32440306A 1906-07-02 1906-07-02 Thread-cutting die. Expired - Lifetime US968701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US32440306A US968701A (en) 1906-07-02 1906-07-02 Thread-cutting die.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32440306A US968701A (en) 1906-07-02 1906-07-02 Thread-cutting die.

Publications (1)

Publication Number Publication Date
US968701A true US968701A (en) 1910-08-30

Family

ID=3037091

Family Applications (1)

Application Number Title Priority Date Filing Date
US32440306A Expired - Lifetime US968701A (en) 1906-07-02 1906-07-02 Thread-cutting die.

Country Status (1)

Country Link
US (1) US968701A (en)

Similar Documents

Publication Publication Date Title
US2221141A (en) Dowel pin
US687464A (en) Die for making screw-threads on tubes.
US936475A (en) Bullet-mold.
US1082112A (en) Wrench.
US1009970A (en) Vise.
US1186429A (en) Expanding mandrel.
US774568A (en) Die-stock.
US579265A (en) guliok
US1008057A (en) Chuck.
US23328A (en) Machine
US739873A (en) Self-opening die.
US954449A (en) Press.
US803445A (en) Screw-cutting die.
US55109A (en) Improvement in screw-wrenches
US1042318A (en) Combination-tool.
US1028243A (en) Wrench.
US499919A (en) Adjustable wrench
US816722A (en) Punch-holder.
US9222A (en) Thomas j
US1118141A (en) Boring-bar.
US81419A (en) Improved die joe making square-headed bolts
US88882A (en) Improvement in screw-threading maqhines
US1062207A (en) Wrench.
US898267A (en) Wrench.
US670468A (en) Nipple-chuck.