Abstract: A twist tie made of two dissimilar polymers forming a composite tying material that may be twisted upon itself forming a closure for a bag, container or bundle. A flat elongated ribbon like thermoplastic substrate (20) has a thermoplastic monofilament (28) disposed generally in the middle of one side and is bonded in place forming a homogeneous joint (40). Another configuration of the monofilament utilizes a pre-formed irregular shape singly or in opposed pairs. A second embodiment utilizes a ribbon of paper (26) laminated underneath the substrate.

Abstract: A twist tie made of two dissimilar polymers forming a composite tying material that may be twisted upon itself forming a closure for a bag, container or bundle. A flat elongated ribbon like thermoplastic substrate (20) has a thermoplastic monofilament (28) disposed generally in the middle of one side and is bonded in place forming a homogeneous joint (40). Another configuration of the monofilament utilizes a pre-formed irregular shape singly or in opposed pairs. A second embodiment utilizes a ribbon of paper (26) laminated underneath the substrate.

Abstract: The improvement to the tying apparatus consists of an intermittent rotatable pneumatic drive to operate the apparatus in place of the electric drive system. The pneumatic drive includes a rotary actuator (20) with a gear arrangement and one-way clutch (26) that provides the 360 degree rotation required to operate the apparatus. A control valve (36) with a single pilot control energizes the actuator clockwise for functional operation and counterclockwise to reset, ready for a subsequent operation. A roller actuated limit valve (42) is in communication with the apparatus program plate and, when mechanically triggered, energizes the pilot portion of the control valve, driving the program plate a full 360 degrees, completing a functional operation of encircling, gathering, twisting and cutting tie material around an article, such as a bag, sack, or other like-open mouth articles.

Abstract: A hand held portable twist tie apparatus which has a frame (20), a drive motor (44) and controls. A set of reduction drive gears (68) reduce the motor speed and drive a gear cluster with turntable (74). A twister (94) is rotated by a drive train (114) that intermeshes at the proper time with the gear cluster. A spring loaded shuttling carriage (126) slides along the twister and contains arms (130) that swing around the product and guide twist tie material (76) to enclose the product to be tied. A feed transport arm (142) advances the tie material and cuts it to the appropriate length for complete encircling, tightening and twisting by the above elements. A housing (208) and shield (210) cover the moving parts and a reel holder (194) mounted on top of the housing accepts a roll of tie material to supply the apparatus. A handle (218) provides a grip for one handed operation and power is supplied by a battery (48), or power converter (58).

Abstract: A method for the precision alignment of bearings and, more particularly, a method of installing sleeve bearings relative to other parts of the apparatus assembly or to other bearings in a manner that will assure the accurate alignment of the axis of the bearing bore. The method comprises the steps of pressing the bearing into an outer sleeve, sizing the inner diameter of the bearing bore, precisely setting the bearing-sleeve assembly on a guide shaft within the housing bore and filling the gap between the sleeve and housing bore with an adhesive.

Abstract: An improved technique for the assembly of motors of the type having a printed armature that rotates in a flat, annular air gap between a magnet assembly and a magnetic flux plate, wherein the size of the air gap is accurately maintained at preselected value. In one embodiment of the invention, a precision shim, having a thickness the same as the preselected air gap size, is placed on a flat work surface, the magnet assembly is placed on the shim, and a motor housing is placed over the magnet assembly and shim. An epoxy fill in the housing is compressed as the housing is pressed down over the magnet assembly until a reference surface on the housing contacts the work surface. In an alternate embodiment of the invention, an inner flux plate is formed to include a plurality of tines, so shaped and sized that, when the inner flux plate and the magnet assembly are bonded together and inserted in the housing, the tines provide for a force fit in the housing.

Abstract: Shock-resistant tape transport apparatus of the type which has supply and take-up reels that are driven by surface engagement of a capstan with the outermost layer of tape on each reel. Each reel is journaled in a separate pivot arm carriage that is urged pivotally toward the capstan, to maintain the surface engagement as the tape is driven from one reel to the other. Resistance to shock and vibration is achieved by providing each carriage with a counterweight to balance the mass of the corresponding tape reel, and with a pivotal mounting that automatically moves the pivot point of the carriage to compensate for changes in the mass of the reel as the tape is moved from one reel to the other.

Abstract: The present invention relates generally to a transducer positioning and adjusting apparatus and, more particularly, to an improved system for accurately and reproducibly positioning a transducer head in vertical relationship to a series of parallel horizontal tracks on a recording medium such as magnetic video tape. The apparatus comprises a frame upon which the elements of the system are mounted and with respect to which they are vertically aligned. A cam having a plurality of horizontally planar steps formed about its upper surface is rotatably mounted upon said frame and a vertically moveable bearing post, which is secured at one end to the transducer head, is held in continuous contact with the stepping surfaces formed on the cam. A ball bearing which contacts the underside of the cam substantially beneath the stepping surface upon which the bearing post is held in contact is utilized to support the cam on the mounting frame and maintain said stepping surface in precise vertical alignment therewith.