US1164567A - Adjusting means for spring screw-threading dies and hollow mills. - Google Patents

Adjusting means for spring screw-threading dies and hollow mills. Download PDF

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Publication number
US1164567A
US1164567A US73230412A US1912732304A US1164567A US 1164567 A US1164567 A US 1164567A US 73230412 A US73230412 A US 73230412A US 1912732304 A US1912732304 A US 1912732304A US 1164567 A US1164567 A US 1164567A
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United States
Prior art keywords
adjusting means
spring screw
die
hollow
threading
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Expired - Lifetime
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US73230412A
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Lucas A Bartels
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Individual
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Priority to US73230412A priority Critical patent/US1164567A/en
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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
    • B23B29/03421—Boring heads with tools moving radially, e.g. for making chamfers or undercuttings radially adjustable before starting manufacturing by pivoting the tool carriers or by elastic deformation
    • 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
    • B23G5/08—Thread-cutting tools; Die-heads with means for adjustment
    • B23G5/10—Die-heads
    • B23G5/106—Collet-type die-heads
    • 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
    • Y10T408/8583—Moving means including wedge, screw or cam with resiliently urged Tool
    • Y10T408/85843—Resilient Tool or tool-support
    • 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
    • Y10T408/85892—Screw driven wedge or cam
    • Y10T408/85894—Annular wedge-collar

Definitions

  • the invention relates generally to an improvement in spring screw threading dies and hollow mills, and particularly to a means for adjusting such parts in a simple and accurate manner.
  • the main object of the invention resides in the production of a ring arranged for threaded engagement with the threading die or hollow mill, and which through the peculiar formation of the threaded surfaces of the die or mill and ring, will adjust such die or mill.
  • Figure 1 is a view in elevation partly in section illustrating the improvement as applied to a spring screw threading die.
  • Fig. 2 is a sectional view of the ring.
  • Fig. 3 is a view similar to Fig. 1 showing the invention applied to a hollow mill.
  • Fig. 4 is a detail sectional view illustrating the manner of engagement of the prongs with the adjusting ring.
  • the threading die or hollow mill is exteriorly threaded at l and such threading is peculiar in that the depth of each succeeding thread from the operative end of the die or mill toward the opposite end is of reduced depth, as viewed in section, or in other words the threading channel on the die or mill has its maximum depth at the initial or entrant end, and is gradually and uniformly reduced in depth therefrom toward the opposite end.
  • the adjusting ring 2 which is interiorly of a size to cooperate with the die or mill is interiorly threaded at 3, said threads having a pitch to engage with the threads on the die or mill but the threaded surface of the ring is tapered with the larger end of a size to exactly cooperate with the initial thread channel on the die or mill without compression of the parts.
  • the ring is threaded upon the die or mill to accomplish a desired adjustment it being noted that the gradual reduction in the depth of the threaded channel of the die or mill together with the tapered arrangement of the threaded portion within the ring insures such movement of the prongs or lands as will provide for the desired adjustment.
  • the improvement is of material advantage over other adjusting means heretofore provided in that it insures an absolutely uniform movement of the lands in the adjusting operation, so that when adjusted the work of the lands will be evenly distributed between all of them and no one will wear more than another. Furthermore the uniform movement of all lands in the adjustment prevents threading off center and thereby insures more perfect work.
  • the ring may be readily and conveniently applied and in use will even tend to correct irregularity in the position of the lands incident to there having to come out of shape during the hardening process.
  • the ring may be formed exteriorly in any way to provide for its ready operation in appl fing it to or removing it from the die or m1 Having thus described the invention, what I claim as new, is:
  • a cutting implement having prongs and formed with an adjusting thread channel, said channel being of gradually decreasing depth from the entrant end, and a ring arranged for threaded connection with said channel, said ring being interiorly threaded throughout a tapered surface.

Description

L A. BARTELS.
ADJUSTING MEANS FOR SPRING SCREW THREADING DIES AND HOLLOW MILLS.
APPLICATION FILED NOV. \9. 1912.
v 1,164,67, Patented Dec.14,1915.
' amto'a LUCAS A. BABTELS, 0F HARTFORD, CONNECTICUT.
ADJUSTING MEANS FOR SPRING SCREW-THREADING DIES AND HOLLOW MILLS.
Specification of Letters Patent.
Patented Dec. T4, 1915.
Application filed November 19, 1912. Serial No. 732,304.
To all whom it may concern Be it known that I, LUCAS A. BARTELS, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented new and useful Improvements in Adjusting Means for Spring Screw-Threading Dies and Hollow Mills, of which the following is a specification.
The invention relates generally to an improvement in spring screw threading dies and hollow mills, and particularly to a means for adjusting such parts in a simple and accurate manner.
The main object of the invention resides in the production of a ring arranged for threaded engagement with the threading die or hollow mill, and which through the peculiar formation of the threaded surfaces of the die or mill and ring, will adjust such die or mill.
The invention will be described in the following specification, reference being had particularly to the accompanying drawing, in which:
Figure 1 is a view in elevation partly in section illustrating the improvement as applied to a spring screw threading die. Fig. 2 is a sectional view of the ring. Fig. 3 is a view similar to Fig. 1 showing the invention applied to a hollow mill. Fig. 4 is a detail sectional view illustrating the manner of engagement of the prongs with the adjusting ring.
In the details of improvement the threading die or hollow mill, as the case may be, is exteriorly threaded at l and such threading is peculiar in that the depth of each succeeding thread from the operative end of the die or mill toward the opposite end is of reduced depth, as viewed in section, or in other words the threading channel on the die or mill has its maximum depth at the initial or entrant end, and is gradually and uniformly reduced in depth therefrom toward the opposite end.
The adjusting ring 2, which is interiorly of a size to cooperate with the die or mill is interiorly threaded at 3, said threads having a pitch to engage with the threads on the die or mill but the threaded surface of the ring is tapered with the larger end of a size to exactly cooperate with the initial thread channel on the die or mill without compression of the parts.
In use the ring is threaded upon the die or mill to accomplish a desired adjustment it being noted that the gradual reduction in the depth of the threaded channel of the die or mill together with the tapered arrangement of the threaded portion within the ring insures such movement of the prongs or lands as will provide for the desired adjustment.
The improvement is of material advantage over other adjusting means heretofore provided in that it insures an absolutely uniform movement of the lands in the adjusting operation, so that when adjusted the work of the lands will be evenly distributed between all of them and no one will wear more than another. Furthermore the uniform movement of all lands in the adjustment prevents threading off center and thereby insures more perfect work. The ring may be readily and conveniently applied and in use will even tend to correct irregularity in the position of the lands incident to there having to come out of shape during the hardening process. The ring may be formed exteriorly in any way to provide for its ready operation in appl fing it to or removing it from the die or m1 Having thus described the invention, what I claim as new, is:
A cutting implement having prongs and formed with an adjusting thread channel, said channel being of gradually decreasing depth from the entrant end, and a ring arranged for threaded connection with said channel, said ring being interiorly threaded throughout a tapered surface.
In testimony whereof I affix my signature in presence of two witnesses.
LUCAS A. BARTELS.
Witnesses:
WILLIAM F. HUssEY, ALBERT BAUMGARTEN.
Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.
US73230412A 1912-11-19 1912-11-19 Adjusting means for spring screw-threading dies and hollow mills. Expired - Lifetime US1164567A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US73230412A US1164567A (en) 1912-11-19 1912-11-19 Adjusting means for spring screw-threading dies and hollow mills.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73230412A US1164567A (en) 1912-11-19 1912-11-19 Adjusting means for spring screw-threading dies and hollow mills.

Publications (1)

Publication Number Publication Date
US1164567A true US1164567A (en) 1915-12-14

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