Sheldon K Kessler

US Patent:

44769733, Oct 16, 1984

Filed:

Apr 1, 1982

Appl. No.:

6/364437

Inventors:

Sheldon Kessler - Chicago IL
Vasilios Strubulis - Des Plaines IL

Assignee:

Pack-All, Inc. - Chicago IL

International Classification:

B65G 2500

US Classification:

198744

Abstract:

The apparatus for sequentially advancing a plurality of articles across a feed table to a work station includes an input station for receiving articles deposited on the feed table, a reciprocating pusher assembly adapted to engage and advance the articles across the feed table from the input station when driven in a forward direction and to disengage from the article when driven in reverse, and an air cylinder-piston drive mechanism for the pusher assembly whereby the length of stroke of the piston and the pusher assembly is selectively variable. The pusher assembly includes a plurality of removable pushers each of which is relocatable at varying intervals along the longitudinal axis of the pusher assembly, and a mechanism for laterally adjusting the position of the pusher assembly to maintain an in-line feed mode regardless of the width of the articles being advanced along the feed table.

US Patent:

46974016, Oct 6, 1987

Filed:

Nov 19, 1986

Appl. No.:

6/932334

Inventors:

Sheldon Kessler - Chicago IL
Vasilios Strubulis - Des Plaines IL

Assignee:

Pack-All, Inc. - Chicago IL

International Classification:

B65B 908

US Classification:

53459

Abstract:

An L-sealer apparatus in which the transverse arm portion of the pivotal pressure frame is provided with an adjustably-retractable cutting blade for alternatively forming bags having only three sealed sides thereof, with one side edge being left unsealed for subsequent closure by a twist-tie, and for alternatively forming conventional, completely sealed bags. A clamping element is provided for clamping the plastic film adjacent to the portion at which the cutting blade is to cut, in order to provide a clean cut. The plastic film is cut downstream or upstream of the portion being heat-sealed by the electrical heating wire provided with the transverse arm portion of the pressure frame. The cutting blade is adjustable such that its lower cutting edge may be alternately positioned below the lower edge surface of the clamping element to cut the plastic film, in order to form a bag sealed on three sides, or to raise the cutting edge of the blade above the lower edge surfaces of the clamping member, in order to provide a conventional bag completely sealed on all sides. The clamping member is mounted for relative movement with respect to the transverse arm portion of the pressure frame, with which it is floatingly mounted and urged toward the upper surface of the transverse arm portion by a plurality of spring members.