US20165A - Improvement in punching metallic tubes - Google Patents

Improvement in punching metallic tubes Download PDF

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Publication number
US20165A
US20165A US20165DA US20165A US 20165 A US20165 A US 20165A US 20165D A US20165D A US 20165DA US 20165 A US20165 A US 20165A
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United States
Prior art keywords
punch
improvement
mandrel
metallic tubes
punching
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
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ZEE I LLC
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Assigned to ZEE I, LLC reassignment ZEE I, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GARDNER, LEITH MARIE, ZAIGER, GARY NEIL, ZAIGER, GRANT GENE
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
    • 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
    • Y10T83/00—Cutting
    • Y10T83/384—By tool inside hollow work
    • Y10T83/386—With expanding mandrel
    • 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
    • Y10T83/00—Cutting
    • Y10T83/384—By tool inside hollow work
    • Y10T83/403—With manually actuated means to position or facilitate positioning of work
    • 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
    • Y10T83/00—Cutting
    • Y10T83/748—With work immobilizer
    • Y10T83/7487—Means to clamp work
    • Y10T83/7573—Including clamping face of specific structure

Definitions

  • the mandrel a which supports the tube b during the punching operation, is secured to the left-hand end of the platform A by means of the box e, the cap c, and a pair of bolts, (or it may be secured by any other suitable device,) While the opposite end of said mandrel rests loosely in the bearings p p', located at the opposite end of said platform.
  • the bearing p which loosely embraces about threefourths of the periphery of the mandrel a, is iirmly secured between the cheeks B B, which rise from the right-hand end of the platform A.
  • the block h which is securely confined in its place between the cheeks B B', has a vertical groove formed in its face for the reception of the stock CZ of the punch d', the said punch-stock being retained in its guiding-groove by means of the clamps 'it' or other suitable fastenings.
  • a crank-shaft f works in apertures in the upper ends of the cheeks B B, or in journal-boxes combined with said cheeks.
  • the stock of the punch d is combined with the central crank or an eccentric on the shaft f by Ineans of the hinged headpiece g and the strap g, substantially as represented in the drawings.
  • a socket n is formed in the loose end of the mandrel a, and immediat-ely beneath the punch d an aperture m is formed in the periphery of the mandrel, which leads into the said socket n, and through which the clippings of the punch are discharged into said socket.
  • Adetent of the shape particularly shown in Fig. 5 is secured by means of a fulcrum pin or screw to the right-hand side of the cheek B.
  • the laterallyprojecting tooth at the inner end of the detent j corresponds in size and shape with that of the punch d', and the said detent is placed in such a position relatively to that of the punch d that after the punch has formed one aperture in the tube bthe proper position for the next succeeding aperture to be formed in said tube will be indicated with the utmost precision, and the tube be held securely during the punching operation, by pressing the tooth of the detent j into the aforesaid aperture and retaining it in that position until the before-mentioned succeeding aperture has been formed by the punch.
  • a gouge-shaped wedge k whose length corresponds with that of the tube to be punched, is inserted into the mouth of the tube and is pressed between the under side thereof and the under side of the mandrel, for the purpose of keeping the upper side of the mandrel firmly pressed against the upper side of the tub'e during the operation of punching apertures therein.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Forging (AREA)

Description

UNITED STATES PATENT OFFICE.
BENJAMIN MAOKERLEY, AOF NEW PETERSBURG., OHIO.
IMPROVEMENT IN PUNCHING METALLIC TUBES.
Specification forming part of Letters Patent No. 20,165, dated May 4, 1858.
an end view; Fig. 4, a section in the line a:
of Fig. l; and Fig. 5, a representation of a portion of the machine detached.
Similar letters indicate corresponding parts in all the drawings.
The mandrel a, which supports the tube b during the punching operation, is secured to the left-hand end of the platform A by means of the box e, the cap c, and a pair of bolts, (or it may be secured by any other suitable device,) While the opposite end of said mandrel rests loosely in the bearings p p', located at the opposite end of said platform. The bearing p, which loosely embraces about threefourths of the periphery of the mandrel a, is iirmly secured between the cheeks B B, which rise from the right-hand end of the platform A. The block h, which is securely confined in its place between the cheeks B B', has a vertical groove formed in its face for the reception of the stock CZ of the punch d', the said punch-stock being retained in its guiding-groove by means of the clamps 'it' or other suitable fastenings. A crank-shaft f works in apertures in the upper ends of the cheeks B B, or in journal-boxes combined with said cheeks. The stock of the punch d is combined with the central crank or an eccentric on the shaft f by Ineans of the hinged headpiece g and the strap g, substantially as represented in the drawings. A socket n is formed in the loose end of the mandrel a, and immediat-ely beneath the punch d an aperture m is formed in the periphery of the mandrel, which leads into the said socket n, and through which the clippings of the punch are discharged into said socket. Adetent of the shape particularly shown in Fig. 5 is secured by means of a fulcrum pin or screw to the right-hand side of the cheek B. The laterallyprojecting tooth at the inner end of the detent j corresponds in size and shape with that of the punch d', and the said detent is placed in such a position relatively to that of the punch d that after the punch has formed one aperture in the tube bthe proper position for the next succeeding aperture to be formed in said tube will be indicated with the utmost precision, and the tube be held securely during the punching operation, by pressing the tooth of the detent j into the aforesaid aperture and retaining it in that position until the before-mentioned succeeding aperture has been formed by the punch. It will therefore be perceived that when it is desired to form a double series of spirally-located apertures in a cylinder, which shall be diametrically opposite each other, itis only necessary to properly locate the commencing apertures of each series to have al1 the succeeding apertures of the same occupy their appropriate relative positions from end to end of the eylinder. A gouge-shaped wedge k, whose length corresponds with that of the tube to be punched, is inserted into the mouth of the tube and is pressed between the under side thereof and the under side of the mandrel, for the purpose of keeping the upper side of the mandrel firmly pressed against the upper side of the tub'e during the operation of punching apertures therein.
Having thus fully described my improved machine for forming corresponding series of s pirall y-located apertures in cylindrical tubes, what I claim therein as my invention, and desire to secure by Letters Patent, is
l. The combination of the mandrel a, the punch CZ', and the detent j, substantial-ly in the manner and for the purpose herein set forth.
2. The use of the gouge-shaped wedge 7c, in combination with the mandrel a and the punch d', substantially in the manner and for the purpose herein set forth.
The above specification of my improved machine for punching spirally-located apertures in metallic tubes signed and witnessed this 27 th day of February, 1858.
BENJAMIN MACKERLEY. Vitnesses:
HENRY HIATT, JAMES E. MAOKERLEY.
US20165D Improvement in punching metallic tubes Expired - Lifetime US20165A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422803A (en) * 1943-09-17 1947-06-24 Emil A Schigut Automatic slotting machine
US5964009A (en) * 1997-09-15 1999-10-12 Snap-On Technologies, Inc. Tool with dual-material handle
US6024903A (en) * 1997-01-10 2000-02-15 Hp Intellectual Corp. Process for making a comfort grip handle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422803A (en) * 1943-09-17 1947-06-24 Emil A Schigut Automatic slotting machine
US6024903A (en) * 1997-01-10 2000-02-15 Hp Intellectual Corp. Process for making a comfort grip handle
US5964009A (en) * 1997-09-15 1999-10-12 Snap-On Technologies, Inc. Tool with dual-material handle

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