US987144A - Die for perforating can-tops. - Google Patents

Die for perforating can-tops. Download PDF

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Publication number
US987144A
US987144A US1909497877A US987144A US 987144 A US987144 A US 987144A US 1909497877 A US1909497877 A US 1909497877A US 987144 A US987144 A US 987144A
Authority
US
United States
Prior art keywords
plunger
die
plungers
perforating
tops
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
Inventor
John H Kuechenmiester
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.)
St Louis Paper Can & Tube Co
Original Assignee
St Louis Paper Can & Tube Co
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 St Louis Paper Can & Tube Co filed Critical St Louis Paper Can & Tube Co
Priority to US1909497877 priority Critical patent/US987144A/en
Application granted granted Critical
Publication of US987144A publication Critical patent/US987144A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
    • B21D45/006Stripping-off devices
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/202With product handling means
    • Y10T83/209Including means to replace product in base material after cutting
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/202With product handling means
    • Y10T83/2092Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096Means to move product out of contact with tool
    • Y10T83/2135Moving stripper timed with tool stroke
    • Y10T83/215Carried by moving tool element or its support
    • Y10T83/2155Stripper biased against product
    • Y10T83/2159By spring means
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8821With simple rectilinear reciprocating motion only
    • Y10T83/8828Plural tools with same drive means
    • Y10T83/8831Plural distinct cutting edges on same support

Description

Patented Mar. 21, 1911.
J; H. KUEGHENMIESTER. DIE FOR PERFORATING CAN TOPS. APPLICATION FILED MAY 24, 1909.
ABBY.
s rnsP ENT OFFICE.
Joan E. nuncnnnmn'srnn, or s'r.
LOUIS, MISSOURI, "ASSIGNOR TO ST. LOUIS PAPER CAN & TUBE COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.
DIE FOR PEBPORATING CAN-TOPS.
Specification of Letters Patent.
Patented Mar. 21, 1911.
Application filed May 24, 1969. Serial No. 497,877.
I To all whom it may concern:
Beit known that I, JOHN H. KUnoHnn- Mins'rnn, a citizen of the United States, residlng at St. Louis, Missouri, have invented a certaln new and useful Improvement in pressed. Fig. 4 is a similar view showing the plungers on the lower die raised.
This inven ion relates to a new and useful improvement in dies-for perforating tops for cans and the like,the object belng to have the perforated disks, which are removed by the upper die, restored by the plunger operating under the lower die. In this manner, the burred edges of the perforated openings and of the pieces of'mate-.
rial removed from said openings constitute a fastening orholdlng means to retain said severed P16698111 said openings. The can top with these pieces in position can be used as an imperforate can top, retaining the contents of the can intact. When it is desired to sift the contents of the can through the perforated openings, may be employed to force the severed pieces into the can, thereby exposing the perforated openings and enabling the contents of the can to be sifted therethrough.
In the drawings, 1 indicates a table or support upon which is arranged a female die 2. This female die is surrounded by marginal flanges 3 which serve as a guide to center the can top 4 on the female die.
5 is a rod threaded into the support 1 and carrying a plate 6 at its lower end, above which is a yielding device, in this instance in the form ofa rubber body 7, but which may be in the form of a heavyspring if desired. Within the rubber body 7 is a follower or washer 8.
9 is a plunger head having a lower plunger 10 secured therein and movable therewith. This head 9 and its carried plunger slide vertically on the rod 5 and are scend, as shown in Fig. 2.
a pointed instrument spring 7 in such position that the upper ends of the plunger 10 are flush with the upper surface of the female die 2.
11 is the upper plunger, to the lower end of which is secured by a suitable bolt 12 the upper plunger head 13. In this upper plunger head are plungers 14. On the upper plunger head is a strlpping plate 15 whose marginal flanges l5 are slotted so as to receive guiding screws 16'. A spring 17 holds the stripping plate in its lowered position so that its lower face will be flush with the lower ends of the upper plungers. The spring 17 is accommodated in a centrally formed opening 17 in the plunger head 13, and the plungers 14: are disposed around said spring and chamber. The spring 17, it will be observed, bears centrally upon the stripping plate 15.
The operation of the device is as follows: The support 1 is mounted in appropriate manner and the upper plunger is carried by a. vertically reciprocating bar or arm in a manner well known in punching machinery. The can top is arranged in position and the apparatus causes the upper plunger to de- The stripping plate contacts with the cam top and holds the same firmly in position, after which a continued downward movement of the upper plunger the female die. This downward movement of the upper plunger causes the lower plunnormally held lifted by the rubber or other forces the plunging rods 1 1 downwardly, punching out portions of the can top, forcing them into the openings in ger to be depressed, as shown in Fig. 3. 'It
is only necessary to completely sever the punched portions of the can top,
under restraint however, until it reaches the position shown in Fig. 4 wherein it will be seen that the force under the lower plunger has restored them to their normal position in which the portions removed from the can top have been replaced. The upper plunger must, of course, ,be restrained so as to offer after which 7 the upper plunger is permitted to rise, still upper plungers are wholly housed. Nhen the upper plungers have been lifted a sufficient distance, the punched can top may be removed and a new'blank inserted in position for another operation,
The plungers l0 and 14 respectively are preferably provided with threaded portions by virtue of which they may be adjusted vertically to take up Wear, especially when the corners thereof become rounded and it is necessary to regrind their ends for the purpose of sharpening them. The lower end of rod 5 is threaded a suflicient distance so that the spring follower 6 may be adjusted on said rod to regulate the compression of said spring and thereby vary the force under the lower plungers as required by different thicknesses of metal in the can top operated upon.
Having thus described my invention, what I claim is:
In a die for perforating can tops and replacing the material removed from said perforations, the combination of a female die on which said can top is arranged, a marginal flange around said female die, extending beyond the same to form a guide for the can top, an upper plunger having perforating plunger-s performing said perforations, a stripping plate through which said perforating plungers pass, having a marginal flange placed around said upper plunger, a spring interposed between said plunger and said stripping plate, a lower plunger head having replacing plungers in line with said upper plungers and yielding means under said lower plunger head for restoring the same after they are displaced by the upper plungers.
In testimony whereof I hereunto affix my signature in the presence of two witnesses,
' this 21st day of May, 1909.
J OHN H. KUECHENMIESTER. Witnesses:
ALMA GEBHART,
LENORE CLARK. i.
US1909497877 1909-05-24 1909-05-24 Die for perforating can-tops. Expired - Lifetime US987144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1909497877 US987144A (en) 1909-05-24 1909-05-24 Die for perforating can-tops.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1909497877 US987144A (en) 1909-05-24 1909-05-24 Die for perforating can-tops.

Publications (1)

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US987144A true US987144A (en) 1911-03-21

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US1909497877 Expired - Lifetime US987144A (en) 1909-05-24 1909-05-24 Die for perforating can-tops.

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839955A (en) * 1954-10-29 1958-06-24 Western Electric Co Article-working apparatus
US3296905A (en) * 1965-01-08 1967-01-10 John S Killaly Compressive stripping unit and indexing type nibbling punch for turret punch presses and the like
US4118968A (en) * 1975-10-16 1978-10-10 Tridan Tool & Machine, Inc. Self cleaning progressive fin die with improved stripping means
US4785655A (en) * 1987-01-05 1988-11-22 General Electric Company Method and arrangement for producing knockouts for electrical equipment cabinets

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839955A (en) * 1954-10-29 1958-06-24 Western Electric Co Article-working apparatus
US3296905A (en) * 1965-01-08 1967-01-10 John S Killaly Compressive stripping unit and indexing type nibbling punch for turret punch presses and the like
US4118968A (en) * 1975-10-16 1978-10-10 Tridan Tool & Machine, Inc. Self cleaning progressive fin die with improved stripping means
US4785655A (en) * 1987-01-05 1988-11-22 General Electric Company Method and arrangement for producing knockouts for electrical equipment cabinets

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