Claims
- 1. A capper head for a screw closure capping machine comprising:
- a body;
- means for securing said body to a capper machine spindle having an axis;
- a chuck driving element rotatably mounted in a low friction bearing in said body with its axis of rotation coaxial with said spindle axis;
- a clutch member secured in rotationally fixed position in said body having a means for coupling said chuck driving element to rotate with said body;
- a cap chuck with a cap receiver and being affixed to said chuck driving element with limited freedom of axial movement relative thereto, said chuck and cap receiver having a generally cylindrical opening for receiving a serrated screw cap, a single, continuous internally toothed peripheral wall portion of said opening for rotationally engaging said cap and a generally annular shoulder to limit the depth of intrusion of said cap in said receiver, said toothed peripheral wail portion being substantially untapered.
- 2. Apparatus as recited in claim 1 wherein said cap receiver opening has a tapered outer portion extending no more than about one-sixth of the depth of the opening of said cap receiver.
- 3. Apparatus as recited in claim 2 wherein said toothed peripheral wall portion of said cap receiver is spaced by at least about one-third of the depth of the opening of said cap receiver from the outer opening of said cap receiver.
- 4. Apparatus as recited in claim 1 wherein said toothed peripheral wall portion of said cap receiver is spaced by at least about one-third of the depth of the opening of said cap receiver from the outer opening of said cap receiver.
- 5. Apparatus as recited in claim 4 wherein said toothed peripheral wall portion extends for no more than about one-third of the depth of the opening of said cap receiver.
- 6. Apparatus as recited In claim i wherein said toothed peripheral wall portion extends for no more than about one-third of the depth of the opening of said cap receiver.
- 7. A capper head for a screw closure capping machine comprising:
- a body;
- means for securing said body to a capper machine spindle having an axis;
- a chuck driving element rotatably mounted In said body with its axis of rotation coaxial with said spindle axis;
- a clutch member secured in rotationally fixed position In said body having a means for magnetically coupling said body to said chuck driving element;
- a cap chuck affixed to said chuck driving element, said chuck having a cap receiver with a generally cylindrical opening for receiving a serrated screw cap, a single continuous internally toothed peripheral wall portion of said opening for rotationally engaging said cap, and a shoulder forming a stop sufficiently wide to positively limit the depth of Intrusion of said cap in said receiver and to orient the cap coaxially with said chuck, said toothed peripheral wall portion being substantially untapered.
- 8. Apparatus as recited in claim 7 wherein said cap receiver opening has a tapered outer portion extending no more than about one-sixth of the depth of the opening of said cap receiver.
- 9. Apparatus as recited in claim 8 wherein said toothed peripheral wall portion of said cap receiver is spaced by at least about one-third of the depth of the opening of said cap receiver from the outer opening of said cap receiver.
- 10. Apparatus as recited in claim 7 wherein said toothed peripheral wall portion of said cap receiver is spaced by at least about one-third of the depth of the opening of said cap receiver from the outer opening of said cap receiver.
- 11. Apparatus as recited in claim 10 wherein said toothed peripheral wall portion extends for no more than about one-third of the depth of the opening of said cap receiver.
- 12. A capper head for a screw closure bottle capping machine comprising:
- a generally cylindrical body;
- means for fixedly securing said body to a capper machine spindle having an axis;
- a chuck driving element rotatably mounted in a low friction bearing in said body with its axis of rotation coaxial with said spindle axis;
- a clutch member secured in rotationally fixed position in said body having a means for magnetically coupling said body to said chuck driving element;
- a cap chuck affixed to said chuck driving element, said chuck having a cap receiver with a generally cylindrical openings for receiving a serrated screw cap, a single continuous internally toothed peripheral wall portion of said opening for rotationally engaging said cap, and a generally annular shoulder inwardly from said toothed wall portion forming a stop sufficiently wide to positively limit the depth of intrusion of said cap in said receiver and to orient the cap coaxially with said chuck, said toothed peripheral wall portion being substantially untapered and spaced by at least eight millimeters from the open end of said generally cylindrical opening.
- 13. Apparatus as recited in claim 12 wherein said cap receiver has a tapered outer portion extending no more than about one-sixth of the depth of said cap receiver.
- 14. Apparatus as recited in claim 13 wherein said toothed wall portion extends for no more than about one-third of the depth of the opening of said cap receiver.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of Wendell Martin application Ser. No. 07/787,011 filed Nov. 4, 1991 U.S. Pat. No. 5,313,765.
US Referenced Citations (23)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
787011 |
Nov 1991 |
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