US2526528A - Magnetic layout punch - Google Patents

Magnetic layout punch Download PDF

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Publication number
US2526528A
US2526528A US68636A US6863648A US2526528A US 2526528 A US2526528 A US 2526528A US 68636 A US68636 A US 68636A US 6863648 A US6863648 A US 6863648A US 2526528 A US2526528 A US 2526528A
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Prior art keywords
punch
magnetic
layout
bushing
magnet
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Expired - Lifetime
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US68636A
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Charles R Zickler
Jr Charles R Zickler
Warren C Zickler
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D5/00—Centre punches
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S33/00—Geometrical instruments
    • Y10S33/01—Magnetic

Definitions

  • This invention relates to a magnetic-layout punch.
  • FIG. 1 is a perspective View of a magnetic .layout punch set up on a piece of sheet material and with illustration made to a hammer which is used for striking the punch.
  • Fig. 2 is a vertical sectional view of the magnetic layout punch as viewed on line 2-2 of Fig. 1.
  • Fig. 3 is a top plan view of the punch.
  • l represents a flat sheet of material on which has been disposed, at different locations, crossed lines I l and I2 at the intersection of the same there is to be punched an opening or center mark for the insertion of a drill point.
  • My layout punch device comprises an external shell I3 having a top inwardly extending flange l4 and a bottom outwardly extending flange l5 serving as a foot portion. On this foot portion are markings l6 and aligned notches l1. These markings and notches are disposed ninety degrees apart and are adapted to be aligned with the respective crossed lines H and I2. Fitted within the external sleeve I3 is a bushing l8 of non-magnetic material containing a hollow permanent magnet I9.
  • having an outwardly extending foot portion 22 engaging with the bottom of the magnet and an outwardly bent top flange 2 3 resting on the flange I4 of the outer sleeve I3 whereby to positively support the magnet within the outer sleeve l3.
  • is of non-magnetic material and receives a metal punch 24 having a pointed operating end 25 and a top knurled handle portion 26 and a striking at locate a hole in the sheet material It]. As the punch is struck and with the magnetic layout device properly located on the crossed lines H and
  • the bottom ends of the bushings, magnet and outer casing are exactly flush with one another and smooth so that good engagement is made with the flat sheet material.
  • the magnet will also hold the punch in place within the inner bushing 2
  • can be omitted if desired, whereby to provide a less expensive construction.
  • the punch 24 would, accordingly, ride directly through the permanent magnet H! which may have a smaller internal diameter than that shown.
  • a magnetic layout punch having an outer magnetic casing with a bottom foot portion thereon, a permanent inner magnet of hollow cylindrical shape tightly fitted within a nonmagnetic bushing and the outer casing, an inner bushing having a radially extended bottom flange engaging with the bottom end of the inner magnet, said outer casing having a radially inwardly extending flange on its upper end to provide a top face, said inner bushing having a radially outwardly extending flange on its upper end extending outwardly over the top face of the radially inwardly extending flange of the outer casing whereby to retain the inner magnet against outward and QQWnward displacement from the outer casing, and a punch element adjustable through the inner bushing and extendable through the lower end of the bushing.
  • a magnetic layout punch having an outer magnetic casing with a bottom foot portion thereon, a permanent inner magnet of hollow cylindrical shape tightly fitted within a nonmagnetic bushing and the outer casing, an inner bushing having a radially extended bottom flange engaging with the bottom end of the inner magnet, said outer casing having a radially inwardly extending flange on its upper end to provide a top face, said inner bushing having a radially outwardly extending flange on its upper end extending outwardly over the top face of the radially inwardly extending flange of the outer casing whereby to retain the inner magnet against outward and downward displacement from the outer casing, and a punch element adjustable through the inner bushing and extendaable through the lower end of the bushing, and

Description

Patented Oct. 17, 1950 -UNITED STATES PATENT OFFICE 2,526,528 I 'MAGNETIC LAYOUT PUNCH Charles R. Zickler, Charles R..Zickler, Jr., and -Warren 0.. Zickler, Yonkers, N. Y.
ApplicaticniDeceinber 31, 1948, Serial N0. 68,636
' 2 Claims.
This invention relates to a magnetic-layout punch.
It is an object of the present invention to provide a magnetic layout punch-adapted to be placed on a fiat surface having crossed lines for the purpose of retaining a punch over the exact intersection of the lines and to retain the punch in such a manner that it is not easily movable when the hammering action is effected upon the same, and wherein the need for setting up work on a jig, to provide the desired accuracy in the locating of punch holes, is avoided.
Other objects of the present invention are to provide a magnetic layout punch which is of simple construction, inexpensive to manufacture, easy to operate, of compact and sturdy construction and emcient in operation.
For other objects and for a better undestanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which Fig. 1 is a perspective View of a magnetic .layout punch set up on a piece of sheet material and with illustration made to a hammer which is used for striking the punch.
Fig. 2 is a vertical sectional view of the magnetic layout punch as viewed on line 2-2 of Fig. 1.
Fig. 3 is a top plan view of the punch.
Referring now to the figures, l represents a flat sheet of material on which has been disposed, at different locations, crossed lines I l and I2 at the intersection of the same there is to be punched an opening or center mark for the insertion of a drill point.
My layout punch device comprises an external shell I3 having a top inwardly extending flange l4 and a bottom outwardly extending flange l5 serving as a foot portion. On this foot portion are markings l6 and aligned notches l1. These markings and notches are disposed ninety degrees apart and are adapted to be aligned with the respective crossed lines H and I2. Fitted within the external sleeve I3 is a bushing l8 of non-magnetic material containing a hollow permanent magnet I9. Within the magnet is an internal bushing 2| having an outwardly extending foot portion 22 engaging with the bottom of the magnet and an outwardly bent top flange 2 3 resting on the flange I4 of the outer sleeve I3 whereby to positively support the magnet within the outer sleeve l3. The internal bushing 2| is of non-magnetic material and receives a metal punch 24 having a pointed operating end 25 and a top knurled handle portion 26 and a striking at locate a hole in the sheet material It]. As the punch is struck and with the magnetic layout device properly located on the crossed lines H and |2, a center punch mark exactly at the crossing of the two lines is effected after which a center drill can be used to drill through the sheet material. The bottom ends of the bushings, magnet and outer casing are exactly flush with one another and smooth so that good engagement is made with the flat sheet material. The magnet will also hold the punch in place within the inner bushing 2| so that it is unnecessary to hold the punch element 24 when striking the same, providing the sheet material is magnetic. If work is being performed on non-magnetic material, the device will be held in place by hand while striking the punch element.
All parts of the punch are held together with a press fit. The inner bushing 2| can be omitted if desired, whereby to provide a less expensive construction. The punch 24 would, accordingly, ride directly through the permanent magnet H! which may have a smaller internal diameter than that shown.
It will be further understood that our invention is not limited to the embodiment shown and described in our application, and that the principle of using a base of any shape, together with proper layout aligning lines, points or incisions, to suit the particular kind of layout that one may prefer, may also be embodied in our invention.
While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claims.
Having thus set forth and disclosed the nature of our invention, what is claimed is:
1. A magnetic layout punch having an outer magnetic casing with a bottom foot portion thereon, a permanent inner magnet of hollow cylindrical shape tightly fitted within a nonmagnetic bushing and the outer casing, an inner bushing having a radially extended bottom flange engaging with the bottom end of the inner magnet, said outer casing having a radially inwardly extending flange on its upper end to provide a top face, said inner bushing having a radially outwardly extending flange on its upper end extending outwardly over the top face of the radially inwardly extending flange of the outer casing whereby to retain the inner magnet against outward and QQWnward displacement from the outer casing, and a punch element adjustable through the inner bushing and extendable through the lower end of the bushing.
2. A magnetic layout punch having an outer magnetic casing with a bottom foot portion thereon, a permanent inner magnet of hollow cylindrical shape tightly fitted within a nonmagnetic bushing and the outer casing, an inner bushing having a radially extended bottom flange engaging with the bottom end of the inner magnet, said outer casing having a radially inwardly extending flange on its upper end to provide a top face, said inner bushing having a radially outwardly extending flange on its upper end extending outwardly over the top face of the radially inwardly extending flange of the outer casing whereby to retain the inner magnet against outward and downward displacement from the outer casing, and a punch element adjustable through the inner bushing and extendaable through the lower end of the bushing, and
guide marks ninety degrees apart on the upper surface of said bottom foot portion on the outer casing, adapted to be aligned with crossed lines on a work piece.
CHARLES R. ZICKLER. CHARLES R. ZICKLER, JR.
WARREN C. ZI'CKLER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS
US68636A 1948-12-31 1948-12-31 Magnetic layout punch Expired - Lifetime US2526528A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730811A (en) * 1954-04-05 1956-01-17 Jr Noel J Gouldsmith Center punching assembly
US2809439A (en) * 1954-06-17 1957-10-15 Homer E Ringgold Centering tool
US2894273A (en) * 1954-10-04 1959-07-14 Fritschle Arthur Tool for removing type metal from type casting machine mouthpieces
US3068573A (en) * 1959-10-14 1962-12-18 James W Sidwell Hole center finder
US3978587A (en) * 1974-10-29 1976-09-07 Hilton Baugh Drafting system and apparatus
US4074432A (en) * 1976-05-24 1978-02-21 Romeo Alfieri Index cover for knock-out punch
US5465500A (en) * 1994-05-27 1995-11-14 Nammoto; Yuji Magnetic point identifier
US20070125215A1 (en) * 2005-12-01 2007-06-07 Robert Exman Apparatus for aligning a punch with a target area and method for doing the same
US20090038170A1 (en) * 2007-08-07 2009-02-12 Tung Feng Shyr Furniture And Picture Mounting Aid
US20100115781A1 (en) * 2008-11-10 2010-05-13 Norelli Louis A Hands-free measuring instrument
US20110138642A1 (en) * 2008-11-10 2011-06-16 Norelli Louis A Hands-free measuring instrument
US8943704B1 (en) * 2013-03-15 2015-02-03 William Lee Scammel Apparatus for locating fixture boxes and the like
US20160368037A1 (en) * 2015-06-22 2016-12-22 Horomo, Llc Metal punch assembly and method of use thereof
US10011007B2 (en) 2016-10-10 2018-07-03 Sumner Manufacturing Company, Llc Universal center punch

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US710257A (en) * 1902-03-24 1902-09-30 Adolph L De Leeuw Magnetic drilling-jig.
US1758959A (en) * 1928-05-07 1930-05-20 Henry W Meesel Layout centering tool
US2167103A (en) * 1939-03-23 1939-07-25 Bustamante Alberto Punch
US2333134A (en) * 1943-03-24 1943-11-02 Claude R Wickard Principal point selector
US2354862A (en) * 1943-10-08 1944-08-01 Houghton Carl Precision prick punch
US2367582A (en) * 1942-01-26 1945-01-16 Honyoust John Drilling jig scale and clamp
US2412489A (en) * 1944-05-05 1946-12-10 Bieg Herman Spot gauge

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US710257A (en) * 1902-03-24 1902-09-30 Adolph L De Leeuw Magnetic drilling-jig.
US1758959A (en) * 1928-05-07 1930-05-20 Henry W Meesel Layout centering tool
US2167103A (en) * 1939-03-23 1939-07-25 Bustamante Alberto Punch
US2367582A (en) * 1942-01-26 1945-01-16 Honyoust John Drilling jig scale and clamp
US2333134A (en) * 1943-03-24 1943-11-02 Claude R Wickard Principal point selector
US2354862A (en) * 1943-10-08 1944-08-01 Houghton Carl Precision prick punch
US2412489A (en) * 1944-05-05 1946-12-10 Bieg Herman Spot gauge

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730811A (en) * 1954-04-05 1956-01-17 Jr Noel J Gouldsmith Center punching assembly
US2809439A (en) * 1954-06-17 1957-10-15 Homer E Ringgold Centering tool
US2894273A (en) * 1954-10-04 1959-07-14 Fritschle Arthur Tool for removing type metal from type casting machine mouthpieces
US3068573A (en) * 1959-10-14 1962-12-18 James W Sidwell Hole center finder
US3978587A (en) * 1974-10-29 1976-09-07 Hilton Baugh Drafting system and apparatus
US4074432A (en) * 1976-05-24 1978-02-21 Romeo Alfieri Index cover for knock-out punch
US5465500A (en) * 1994-05-27 1995-11-14 Nammoto; Yuji Magnetic point identifier
US20070125215A1 (en) * 2005-12-01 2007-06-07 Robert Exman Apparatus for aligning a punch with a target area and method for doing the same
US20090038170A1 (en) * 2007-08-07 2009-02-12 Tung Feng Shyr Furniture And Picture Mounting Aid
US20100115781A1 (en) * 2008-11-10 2010-05-13 Norelli Louis A Hands-free measuring instrument
US7913406B2 (en) * 2008-11-10 2011-03-29 Norelli Louis A Hands-free measuring instrument
US20110138642A1 (en) * 2008-11-10 2011-06-16 Norelli Louis A Hands-free measuring instrument
US8621760B2 (en) 2008-11-10 2014-01-07 Louis A. Norelli Hands-free measuring instrument
US8943704B1 (en) * 2013-03-15 2015-02-03 William Lee Scammel Apparatus for locating fixture boxes and the like
US20160368037A1 (en) * 2015-06-22 2016-12-22 Horomo, Llc Metal punch assembly and method of use thereof
US10252315B2 (en) * 2015-06-22 2019-04-09 Horomo, Llc Metal punch assembly and method of use thereof
US10011007B2 (en) 2016-10-10 2018-07-03 Sumner Manufacturing Company, Llc Universal center punch

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