Method and apparatus for making end closures for shirred casing sticks
AssigneeTeepak, Inc.
InventorThomas W. Martinek
Life of this patent
Estimating the term…
Abstract
A hollow shirred casing stick is provided having the terminal pleats of one end thereof twisted into a cylindrical configuration which is implanted within said hollow stick to form an end closure. The end closure may be formed by twisting successive terminal pleats into the bore of the stick about a rotating mandrel advanced thereinto. A device is provided for forming the closure including a rotating and translating mandrel having retractable pickup means and gripping means, whereby a cylindrical closure may be formed thereabout, and the mandrel withdrawn, without disturbing the closure formed.
Claims22
A device for forming an end closure in a hollow shirred casing stick comprising:
- pickup means for engaging an end of a casing stick, said pickup means including means for deshirring casing material from the end of the casing stick and causing a twisted wall portion of the deshirred casing material to be disposed transversely of the bore of the casing stick;
- gripping means, including means for causing a twisted, substantially cylindrical portion of casing material deshirred from the end of the casing stick to be disposed within the bore of the casing stick, following said wall portion;
- means for extending said pick-up means for transferring the deshirred casing onto said gripping means and for releasing said pick-up means after such transfer;
- and
- means for progressively advancing said gripping means into the bore of the casing stick to form the end closure at least partially therein.
A device for forming an end closure in a hollow shirred casing stick comprising:
- pick-up means, comprising a carrier means and means projecting from said carrier means at one end thereof for engaging an end of a casing stick, said pickup means including means for deshirring casing material from the end of the casing stick and causing a twisted wall portion of the deshirred casing material to be disposed substantially transversely of the bore of the casing stick;
- gripping means, separate from said pickup means, including means for causing a twisted, substantially cylindrical portion of casing material deshirred from the end of the casing stick to be disposed substantially concentric with the bore of the casing stick, following said wall portion;
- means for progressively advancing said gripping means into the bore of the casing stick, whereby the end closure is formed at least partially therein;
- and means for causing said closure forming means to be withdrawn from projecting from said carrier means.
A device for closing an end of a hollow shirred stick of tubular casing comprising:
- a. pickup means adapted to engage the terminal pleats of said casing stick and deshirr the same;
- b. a mandrel having gripping means for engaging said deshirred casing material;
- c. means for rotating said pickup means subsequent to engagement with said terminal pleats to form deshirred casing material into a wall substantially transverse the bore of said casing stick.
- d. means for rotating said mandrel subsequent to said engagement of said pickup means and said terminal pleats;
- and
- e. means for disengaging said pickup means from said transverse wall subsequent to the formation thereof, whereby casing material is progressively deshirred from the end of said casing stick and wound on said mandrel.
A device for forming an end closure in a hollow shirred casing stick comprising:
- pickup means,
- gripper means,
- carrying means for said pickup and gripping means,
- deshirring means to cause said pickup means to engage said casing stick to deshirr a portion thereof into a twisted wall portion of casing material positioned in the hollow portion of the stick disposed substantially transversely of the bore of the casing,
- means to cause said pickup means to disengage from the stick and thereby effectively expose said gripping means to the wall portion of the stick to continue the deshirring by causing a continued twisting of the deshirred casing into a cylindrical twisted portion of the casing material disposed substantially concentric with the bore of the casing.
A method of forming an end closure in a hollow shirred casing stick comprising, in sequence, the steps of:
- 1. deshirring casing material from one end of the casing stick;
- 2. winding the deshirred material into a wall portion generally transverse to the bore of said casing stick;
- and
- 3. advancing said wall portion into the bore of said casing stick while winding a generally cylindrically twisted portion following said wall portion, said cylindrically twisted portion being composed of casing material deshirred from said one end of said casing stick and wound on a rotating, axially translating mandrel.
A method of forming an end closure in a hollow shirred casing stick comprising the steps of:
- 1. winding a wall portion substantially transverse to the bore of the casing stick, said wall portion being composed of casing material deshirred from one end of said casing stick;
- then
- 2. winding a generally cylindrically twisted portion following said wall portion, said cylindrical portion being composed of casing material deshirred from said one end of said casing stick and wound on a rotating mandrel;
- and
- 3. causing said portions to be advanced into the bore of said casing stick by axial translation of said mandrel during the winding of said cylindrical portion.
Dependencies are inferred from the claim text.