US1031195A - Feeding mechanism. - Google Patents

Description

W. PIPPERT.

FEEDING MECHANISM. APPLICATION rILfifi 002', o, 1911.

1,031,195. I Patented July 2, 1912.

3 SHEETS-SHEET 1.

l l l'llia Pip Jeri W. PIPPE'RT. FICEDING MECHANISM.

AP'PLIOATION FILED 001e, 1911.

3 SHEETS-BHBET 2.

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Patented July 2, 1912.

W. PIPPERT.

FEEDING MECHANISM.

APILIOATIOH FILED 00T.6,1911.

1,031,195, Patented July 2, 1912.

3 SHEETS-SHEET 3.

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. UNITED STATES PATENT OFFICE.

WILLIS PIPP ERT, F 'RUMFORD, MAINE, ASSIGNOR TO CONTINENTAL PAPER BAG COMPANY, OF NEW YORK, N. Y., A CORPORATION OF MAINE.

FEEDING MECHANISM.

Specification of Letters Patent.

Patented July 2 1912.

To all whom it may concern:

Be it known that I, WILLIS PIPPERT, a citi zen of the United States, and a resident of Rumford, in the county of Oxford and State of Maine, have invented certain new and useful Improvements in Feeding Mechanisms, of which the following is a specification. I

This invent-ion relates to feeding mechanism for paper bags particularly for self opening square, satchel bottom or similar bags in which one end of the bottom. thereof is folded onto the body thereof.

The object of my improvements is to furnish a mechanism of the class specified of simple construction and rapid and reliable in operation.

Other objects will appear in the description following.

The accompanying drawings illustrate the preferred form of my improvements and- Figure l is an assembled side elevation, with the front frantic removed. Fig. 2 is a plan view corresponding with Fig. 1. Figs. 3 to 7 inclusive are fragmentary side views illustrating steps in the operation of my improved machine.

In the manufacture of paper bags it is often common practice and convenient to fold the bag bottomonto the face or seamless side but if it is desired to print upon said face or seamless side after the bag is completed it is necessary to reverse the fold of the bag bottom relative to the body portion and turn the bottom onto the seam side, so as to present an entirely unbroken surface to print upon. To do this by hand is a tedious and expensive operation and I have herein illustrated means for thus reversing the bag bottom relative to the bag body in deliverin the bag from a containing hopper to the cylinder of the printin press.

Rotating impression cylinc er 3 is fixed to shaft 4 .rotatively supported in side frames 45 5, "6. Said cylinder is provided with one or more sets of grippers as 7, 7 fixed to shaft 8 pivotally mounted in cavity 9 below the face of said cylinder. Said shaft 8 projects beyond the end of said cylinder and has gear 59 1Q fixed thereto for engagement with gear 11 of segment 12 fixed to shaft 13 .pivoted in the end of said cylinder. Said segment 12 has roll 14 pivotally fixed thereto between gear 11 and pivot 13, for engagementwith fixed cam 15 coaxial with cy1inder.3. Shaft free end of said arm 16 and car 17 on the end of said cylinder is compression spring 18. By these means said grippers 7, 7 may be actuated to close and open to successively grip to said cylinder and rele'ase therefrom the underfolded end 40 ofthe paper bag bottom. Above said'cylinder I have provided means for supporting a pile of bags comprising forward lips 19, 19 and rearward lips 20, 20. Between said forward and rearwa; d lips and extending crosswise'said bags and parallel with the axis of cylinder 3 is turning bar 21 downwardly around which the bag body is drawn. Said turning bar is rigidly supported at its ends by rods 38, 38 depending from brackets 39, 39 and said bar preferably has its rear edge 22 rounded so that the bag bodies will pass around it with ease. Said bar 21. also provides a center support for the pile of bags. Adjustable sidedguides 23, 230 may beprovided if desire IVhile the normal tendency-of the underfolded end 40 of the bag bottom 41 is to spring away from said bag bottom downwardly toward the cylinder and into the path of grippers 7 7, I find that. greater certainty and precision of operation is bad by bendlng said underfolded end 40 downwardly by positioning means. For this pur- 13 has arm 16 fixed thereto and between the pose I have provided a reciprocating poker 24 slidably mounted in mortise 25 in bar 21 and adapted to be moved rearwardly and preferably downwardly for bendingsaidundcrfolded bottom end 40- toward said cylinder 3. Said poker 24 hasa wedge shaped end 26 for engaging the ba and the r arward end of said poker is sli dably supported in bracket 27 upstanding from cross bar 28.

For reciprocating poker 24 cam 29 on-shaft 30 en ages roll 31 of arm 32 fixed to shaft 33. film 320 also fixed to shaft 33, is connected to poker 24 by link 34. Spring 35 on poker 24 1s cfiicient to keep roll 31 in contact with cam 29. Shafts 30 and 4 are geared together by equal gears 36, 37 respecti vely.

The 0 eration of my improved mechanismis as fol ows: A pile of bags 50 having'been laced in position with the open ends of said a s on lips 19, and the closed or bottom ends on lips20 and their mid portions on turning bar 21, the body portions of said bags tend to sag, causing the underfolded and bottom '.tom portion 40.

a (Fig. 7

portion 40 of the bottom bag to protrude slightly from body 41 thereof (Fig. 3). The machine being then started grippers 7, 7 begin to rotate outwardly from within pocket 9 in cylinder 3 andpoker 24 moves rearwardl (to the right Fig. 4) its Wedge shape end 26 between bag body 4L1 and underfolded bottom portion 40, poking said underfolded portion downwardly 'in front of grippers '7', 7, (Fig. 4), without moving said bag body relative to the bag pile supporting means. Said grippers as they turn over toward their seats on cylinder 3 encounter the pile of bags and slightly lift that pile during the engagement, of poker end '26 with bottom portion e0, thereby affording ample room between the bagbody for the entrance of said grip pers (Fig. 5). Polier 24 now commences to withdraw and cylinder 3 has advanced until edge 48 of cavity 9'has passed into approximate coincidence with the edgeof bag-bot-' T hereupon, grippers 7, 7 descend and grip said portion 40 to cylinder 3 (Fig. .6). The bottom end of the bag is then withdrawn from lips 20 (Fig. 1) and the open end of body portion 41 is withdrawn from lips 19. That portion of body 41 near the jointure with the bottom isthen folded backwardly onto bottom portion 42 and the main body portion is led downwardly around rounded edge 22 of turning bar 21 onto cylinder 3 ready for printing with its bottom side up, relative to its previous position on the pile supporting means.

Iclaimzi 1. Feeding mechanism for paper bags whose bottoms have one end thereof folded backwardly onto their bodies respectively including in combination means for supporting a pile of bags, a moving receiving member having bag-gr1pping means there means for bending the backwardly folded end of said bag-bottom downwardly into the path of the bag-gripping means and means for moving said receiving member toward the open end of. the bag for withdrawing the bag from the pile supporting means and laying it on said moving member bottom side up relative to its pre-- vious position on the pile su porting means. "2. Feeding-mechanism for paper bags whose bottoms have one end thereof folded onto'their bodies E-respeotively, including in combination means for supporting a pile of bags, a moving receiving member having bag-gripping means thereon, means for bending the folded end of said bag-bottom downwardly into the path oftheba'g-gripping means, means for actuating the bagippin -means to grip said downwardly.

ent bag-bottom end to said receiving memher, a turning bar for the bag-body and means for movingsaidreceiving member to I(draw said bag-body around said turning 3. Feeding mechanism for paper bags whose bottoms'have one end thereof underfolded relative to their bgdies respectively,

including in combination means for supporting a pile of bags, a moving receiving .member having bag-gripping means thereon, means for bending the underfolded end of said bag-bottom downwardly into the path of the bag-gripping means, means for actuating the bag-gripping means to grip said downwardly bent bag-bottom end to said receiving member, 5 turning bar for the bag-body, means for moving said receiving member to draw said bag-body around said turning bar and for laying it on said moving member, bottom side up relative to its previous position on the pile supporting means. I

4.Feed1ng mechanism for paper bags- Whose bottoms haveone end thereof folded backwardly onto their bodies respectively, including in combination means for supporting a pile of bags, a rotating cylinder having a gripper thereon, means for bending the backwardly folded end of said bagbottom downwardly into the path of the cylinder gripper, means for actuating said gripper to grip said downwardly bent bagbottom end to said cylinder and means for rotating said cylinder toward the open end of said bag for withdrawing the bag from the pile supporting means and laying it on said moving memberbottom up relative 'to its previous position on means.

5. Feeding mechanism for paper bags the pile supporting whose bottoms have one end thereof folded onto their bodies respectively, including in combination means for supporting a pile of bags, a rotating cylindenhaving a gripper thereon, means for bendingthe folded end of said bag-bottom downwardly into the path of the cylinder gripper, means for actuating said gripper to grip said down: Wardly bent bag-bottom end to said cylin-" der, a turning-bar for rotating said cylinder for drawlng said bag body around-said turning bar and for laying it on said cylinder, bottom side up relative to its previous position on the pile supporting means.

6. Feeding mechanism for paper bags whose bottoms have one end thereof folded backwardly' onto their bodies respectively,

for the bag-body, means including in combination means for si 1pporting a pile of bags, a movingrecelvlng member having bag-gripping mean I therewithdrawing the bag from the pile supporting means and laying .it on said moving member bottom side up relative to its previous position on the pile supporting means.

7. Feeding mechanism for paper bags Whose bottoms have one end thereof folded onto their bodies respectively including in combination, means for supporting a pile of bags, a moving receiving member having bag-gripping. means thereon, means for actuating said bag-gripping means, a turning bar for ,the bag-body and means for moving said receiving member to draw said bag-body around said turning bar;

8. Feeding -mechanism for paper bags 'whose bottoms have one end thereof folded backwardly onto their bodies respectively, means for support ng a pile of bags, a moving receiving member havlng bag gripping means thereon, means for bending the backwardly folded end of said bag-bottom downwardly into the path of the bagripping means without moving the 'bagody relative to the bag pile supporting means and means for moving said receiving member toward the open end of the bag for withdrawing the bag from the pile supporting means and laying it on said moving member bottom sideup relative to its previous position on the plle supporting means.

Signed at Rumford, Maine, this 29'day of September, 1911, before two subscribing witnesses.

WILLIS PIPPERT.

Witnesses:

CLAUDE F. BROWN, LEoroLn SGHONAUER.

Gopies o! thls'patent may be obtained for five cents each, by addressing the Commissioner of latents.

. Washington, D. 0."

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