Dispensing fold improvement for a clip separator

• US 4,874,158 A
• Filed: 06/20/1988
• Issued: 10/17/1989
• Est. Priority Date: 06/20/1988
• Status: Expired due to Term

• Current Assignee: C.G. Bretting Manufacturing Co., Inc.
• Original Assignee: C.G. Bretting Manufacturing Co., Inc.
• Inventors: Retzloff, Timm G.
• Primary Examiner(s): Garrett, Robert E.
• Assistant Examiner(s): NEWHOLM, THERESE
• Application Number:
  US07/209,220
• Time in Patent Office: 484 Days
• Field of Search: 270/32, 270/39, 270/40, 270/41, 270/42, 270/55, 270/57, 270/58, 270/21.1, 270/52.5, 493/409-412, 493/416-417, 493/429-430
• US Class Current: 270/39.02
• CPC Class Codes: B65H 2404/692 Chute, e.g. inclined surface on which material slides by gravity
• CPC Class Codes: B65H 2701/1924 Napkins or tissues, e.g. dressings, toweling, serviettes, kitchen paper and compresses
• CPC Class Codes: B65H 29/56 for stripping from elements or machines for electrographic machines G03G
• CPC Class Codes: B65H 29/58 Article switches or diverters
• CPC Class Codes: B65H 31/32 Auxiliary devices for receiving articles during removal of a completed pile
• CPC Class Codes: B65H 45/24 Interfolding sheets, e.g. cigarette or toilet papers

Abstract

Method and apparatus for forming a dispensing fold for a clip or predetermined number of interfolded sheets from a continuously building interfolding process having first and second opposed dispensing fold fingers operable between actuated and deactutated positions to engage a mediate portion of a depending layer of the bottommost sheet from the interfolding process stack to form a dispensing fold.

Claims

1. A method of forming a dispensing fold for a clip of a predetermined number of interfolded sheets from a continuously building interfolding process stack comprising the steps of:

a. continuously interfolding and supporting a plurality of individual sheets on a stack supporting means at a package building station to form an interfolding process stack along a principal axis with one layer of the interfolded sheets depending freely from the bottom of the stack below the stack supporting means;

b. advancing a first dispensing fold finger lateral to the principal axis to an actuated position wherein a leading edge of the first dispensing fold finger is in contact with a mediate portion of the depending layer; and

c. advancing a second dispensing fold finger lateral to the principal axis to an actuated position overlapping and subjacent the first dispensing fold finger in its actuated position such that the depending layer is folded against the first dispensing fold finger.

2. The method of claim 1 further comprising the steps of:

d. retracting the first dispensing fold finger to a deactuated position clear of the interfolding process stack;

e. advancing a package build finger to support the folded depending layer; and

f. retracting the second dispensing fold finger to a deactuated position clear of the interfolding process stack.

3. The method of claim 2 further comprising the step of:

g. inserting a clip having a sheet with a dispensing fold formed therein into an inverted carton such that when the carton and clip are returned to an upright position the dispensing fold is accessible to a person seeking to withdraw a first sheet from the carton.

4. The method of claim 2 wherein the package build finger is advanced in a direction lateral to the principal axis of the stack.

5. The method of claim 4 wherein the package build finger is further advanced in a direction parallel to the stack principal axis.

6. Apparatus for forming a dispensing fold in one sheet of a stack of interfolded laminar sheets comprising:

a. slack supporting means for supporting a stack of laminar sheets during an interfolding process along a principal axis such that the lowermost sheet of the stack has a layer depending freely below the stack supporting means;

b. first dispensing fold finger means projecting in a first direction transverse to the principal axis and movable between an actuated and a deactuated position for contacting a first side of a mediate region of the depending layer in the actuated position and for providing clearance to the depending layer in the deactuated position; and

c. second dispensing fold finger means projecting in a second direction generally opposite to the first direction and movable between an actuated and a deactuated position for contacting a second side of the mediate region of the depending layer in the actuated position and for providing clearance to the depending layer in the deactuated position;

such that the depending layer is folded in the mediate region when the first and second dispensing fold fingers are moved to their respective actuated positions.

7. The apparatus of claim 6 wherein the first and second dispensing fold fingers are each movable in a direction generally perpendicular to the stack principal axis.

8. The apparatus of claim 6 wherein the stack supporting means comprises a platform count finger.

9. The apparatus of claim 6 further comprising:

d. package build finger means for supporting the depending layer after a dispensing fold is formed therein.

10. The apparatus of claim 6 wherein the first and second dispensing fold fingers are longitudinally offset from each other along the stack principal axis.

11. The apparatus of claim 10 wherein the first dispensing fold finger is intermediate the stack supporting means and the second dispensing fold finger when the first and second dispensing fold fingers are in their respective actuated positions.

12. The apparatus of claim 11 wherein the layer depends from a first side of the stack and the first dispensing fold finger projects toward the principal axis from the first side of the stack.

13. The apparatus of claim 12 wherein the stack has a second side opposite the first side and the second dispensing fold finger projects toward the principal axis from the second side of the stack.

14. A dispensing fold forming improvement for apparatus of the type having an interfolding table for supporting continuous building of a stack of interfolded laminar products, and a platform count finger selectively interposable above the table after a predetermined number of laminar products have been interfolded into the stack for supporting the continued building of the interfolded laminar products into a new stack with a layer of the lowermost laminar product depending freely from the platform count finger when the interfolding table is moved away from the platform count finger, the improvement in combination therewith comprising:

first and second dispensing fold finger means

i. extending transversely towards and longitudinally offset from each other,

ii. selectively positionable below the platform count finger, and

iii. transversely movable to engage opposite sides of the depending layer at a mediate region thereof for forming a dispensing fold therein.