Abstract: A pipe mold for centrifugally casting pipe is disclosed. The pipe mold according to the present invention is made by depositing weld material on a rigid shell. The rigid shell is obtained by forming a flat plate into a cylinder and welding the resultant seam. Additional rigid shells can be circumferentially welded together to obtain a desired length. The welded seams are areas of weakness called metallurgical notches. To eliminate the metallurgical notches, weld material is deposited on the shell. In one embodiment, weld material is deposited on the outside of the shell. The shell then is machined away. The resultant pipe mold has a total wall thickness comprising weld material and is free of metallurgical notches. In addition, the need for furnace heat-treatment to achieve properties in the weld material can be eliminated.

Abstract: Apparatus for crimping of a moving web is provided, the web having a plurality of holes formed therethrough along a line defined thereon in the direction of movement of the web, each of the holes being separated from a preceding hole by a substantial uniform distance. A holder for mounting a plurality of crimp blades is secured to a shaft for rotation thereby, and the blades are mounted to the holder body in predetermined fixed locations. An anvil is also provided, mounted to a second shaft for rotation thereby. The anvil body includes at least one annular groove defined around its outer surface for receiving the cutting edges of the blades, counter-rotation of the holder and anvil with the moving web therebetween causing insertion of each blade at least partially through the web and into the groove, and subsequent withdrawal of the blade, thereby crimping the web.

Abstract: The present is a machine for forming an inside-outside Bliss-type H-divider shipping container. It is based on an adaptation of a Moen or similar type single cycle container former. These machines employ a split mandrel which is generally in the form of a rectangular prism approximating the inner dimensions of the container. The H-divider portion of the container is held within the mandrel while the body portion is erected thereabout. Opposed plows mounted on the mandrel are adapted to fold what will become interior flaps joined to the end walls. These plows are located so that at the assembly point of the container they are entirely within the confines of the outer boundaries of the mandrel. Located in this position, they cause no interference with the erection of the body portion of the container.

Abstract: In a cartoning machine, apparatus for erecting a carton. The apparatus includes a channel-shaped element having spaced parallel walls and suction cups between the walls of the channel-shaped element. The channel-shaped element engages a carton in a magazine. The suction cups draw the carton into the area between the walls of the channel-shaped element and in so doing cause the carton to open.

Abstract: An improved method of warm folding polymeric sheet material and apparatus for accomplishing the method. The method involves applying conductive heat to both sides of the material prior to folding and is accomplished in steps including: (a) positioning the sheet material; (b) positioning a mandrel plate so as to define a fold line for the sheet material; (c) positioning an exterior heater against the material along the fold line; (d) positioning an interior heater element against the material opposite the exterior heater; (e) and (f) applying preselected amounts of heat to the fold line area through the heaters; (g) retracting the interior heater; (h) mechanically folding the sheet material along a fold line; and (i) annealing the fold by applying additional heat through the exterior heater. The process may also be augmented by adding additional steps.The primary use of the invention is in folding polyvinyl chloride jackets for use in enclosing floppy disks.

Abstract: A flail tube cutter having an elongated cutting head circumscribed by a generally circular cutting blade, a means of rotating this cutting head, and a flexible shaft for coupling the cutting head to the rotating means is disclosed herein. The circular cutting blade of the cutting head includes a serration for defining two cutting teeth. Additionally, the cutting head includes a top portion located above the cutting blade for increasing the impact force of these cutting teeth against the inside wall of the tube being cut. The flail tube cutter of the invention provides a fast-acting tube cutter having a relatively small diameter which is easily snaked through tubes having local restrictions caused by either dents or internally mounted sleeves.

Abstract: A method and machine for folding of foldable articles such as cloth, linens, etc., which is capable of performing various different types of folds in any article regardless of the dimensions of the article. When utilized in combination with a second identical machine and a conveyor to carry the article from a first machine to a second machine, in a direction on the same horizontal plane as, but perpendicular to, that of the first machine, this invention is capable of producing transversal, as well as horizontal, folds without having to dismantle or otherwise alter the structures of the machines.

Abstract: A method and apparatus for manufacturing paper sheets having an appearance of being hand-made, the method comprising the steps of forming watermarks on a continuous web along longitudinal and transverse zones spaced according to the width and length of the paper sheets, drying the continuous web, crushing longitudinal and transverse regions of the dried continuous web within the watermarked longitudinal and transverse zones, respectively, tearing and separating the dried continuous web along the longitudinal and transverse crushed regions, respectively.

Abstract: A pencil sharpener which includes a sliding safety shield preventing operation of the sharpener with the pencil drawer removed and further preventing a pencil to be inserted into the sharpener so as to actuate the cutter assembly unless the shavings drawer is in its fully closed position. In addition a stop for a positive stop of the sharpening process is provided in transverse relation to the cutter assembly aperture so as to impinge upon the cutter assembly and stop the cutter assembly at a zero clearance position with a holder therefor, so as to prohibit the formation of a burr or other irregularity on the pencil point.

Abstract: A plastic bag opening device has a flexible U-shaped member which can be slipped over the slit edge of a plastic bag. Multilayer adhesive strips are affixed to the inside of the ends of the U-shaped member so as to contact the sides of the plastic bag when the U-shaped member is forced to a closed position. As the U-shaped member is flexed to an open position the sides of the bag adhere to the adhesive substance on the end of each exposed layer so that the sides of the bag are pulled apart from each other.

Abstract: A pair of work rolls is provided in a strip mill of the type having one or more back-up rolls for each work roll. Each work roll comprises a tubular body having an axial bore of uniform diameter throughout its length. The exterior surface of the tubular body has a cylindrical roll face of uniform diameter, terminating at its ends in neck portions of lesser diameter. The ends of the body are closed by removable fluid-tight plugs. A cylindrical mandrel of the same length as the roll face is mounted in the bore of each work roll and normally has an interference fit therein. The mandrels of the upper and lower work rolls are relieved at opposite ends. The remainder of the work roll bore at either end of the mandrel defines a pair of volumes in each work roll, filled with hydraulic fluid and individually controllable as to hydraulic pressure. When a strip is to be rolled, the mandrel of each roll is shifted to align its relief with one of the strip edges.

Abstract: The method and apparatus are for bending or straightening a material such as a rail. A simple form of the apparatus comprises two spaced contact members for contacting the rail, and a rail lifting member located between these points arranged to lift the rail between the two points, the lifting member being arranged to engage the head of the rail. A preferred method comprises applying a load to the material and, while the load is applied, continuously or periodically measuring the load applied and the displacement of the material relative to the datum, establishing from the measurements a load at which the plastic component of the total deformation measured is equal to the predetermined deformation from the datum, and then removing the load.

Abstract: An apparatus for transferring a relatively flat object from a first station to a second station includes a support for the object at the first station, a substantially closed housing, and a piston disposed therein for sliding movement from a normal position to an activated position. An actuator extends through the housing and is integrally formed with the piston for sliding movement thereby. Compressed air is selectively directed into the housing for movement of the piston to the activated position, whereby the actuator strikes a blow edgewise of the object for propelling it toward the second station along a predetermined path. A pair of fingers disposed at the second station define therebetween a portion of the path along which an incoming object enters the second station. Each finger includes a path wall having an end surface extending generally inwardly from the finger for blocking the object path for halting object movement.

Abstract: A capping head for the rotary application of a cap on a container wherein a housing adapted to be secured to a rotary spindle rotatably carries a chuck of minimal inertial mass in coaxial alignment with the spindle and an improved nonfrictional magnetic clutch transmits torque from the rotating housing to the chuck to drive the chuck in rotation and thereby carry out a capping operation.

Abstract: A conveyor system is for a shot peening machine of the type which includes blast wheels which are capable of propelling shot generally downwardly into a critical blast region for shot peening a plurality of springs passing therethrough. The springs are supported on horizontally extending spinner rolls within the critical blast region to be capable of being conveyed along a horizontal peening path therethrough. The conveyor system includes a plurality of finger elements extending horizontally into the critical blast region above the spinner rolls and transversely of the peening path. Each finger element includes a first end for making contact with one of the springs and a second end which is secured to and supported by a continuous chain located remotely of the critical blast region. The finger elements are mounted on the chain a predetermined distance apart to be capable of receiving a single spring therebetween.

Abstract: A method and apparatus for joining fittings, particularly wooden stair rail fittings. The apparatus includes a mitre jig and a double slot jig. The mitre jig has a base with a curved bed for supporting the fitting to be cut. A wall is used with the base that has on it a scale for indicating the angle of incline of the stair being worked with. A recess in the wall accommodates a saw and a slot in the wall receives the saw blade. The fitting is placed on the base with its seam aligned with the particular indication for the stair's angle of incline. A saw is then used to cut the fitting. The double slot jig is used to cut slots into the ends of fittings for joining them. The double slot jig has a base, a tray, a double-bladed cutting apparatus, and a frame. The tray supports the fitting to be cut and is movable on the base. Appropriate stops are used to correctly position the fitting on the base and to limit the movement of the tray on the base. A drill with double circular blades can be used.

Abstract: A tandem rolling mill having a plurality of stands with each stand having a pair of work rolls and a pair of backup rolls. A downstream roll stand has work rolls of reduced diameter and backup rolls of increased diameter with respect to an upstream stand preferably at least a major number of downstream stands have reduced diameter work rolls and enlarged diameter work rolls with respect to an upstream stand. The center-to-center spacing between work rolls and backup rolls decreases in a downstream direction and the length of the rolls increases from stand-to-stand in a downstream direction.

Abstract: A tool for applying the margins of a metal foil strip which is adhesively bonded to the edge of a glass article onto the broad surfaces of the article comprises a handle having a pair of elongated arms merging into the handle and extending therefrom to straddle the edge of the article. The flanks have guide surfaces inclined to the longitudinal dimension of the tool to ride upon the edge of the article and surfaces which press the marginal portion of the strip onto the broad surfaces of the glass.

Abstract: A rafter cutting template and guide for laying out each type of roof rafter for a selected roof pitch given the zero pitch length of the rafter. The template includes a body portion and wing means attached thereto. The body portion is shaped so that each end includes the necessary angles so that its edges can be used for marking the plumb cut line, seat cut and tail lines for each of the types of rafters that that end is designed to lay-out for the selected roof pitch. The body portion also includes means for converting the zero pitch length of each type rafter to the actual length for the selected pitch of the roof. The wing means is affixed perpendicularly to the top edge of the body portion and fulfills two functions.

Abstract: The present invention relates generally to numerically controlled contour machining, and particularly to an apparatus and method for performing such operations on a "bar-type" horizontal boring mill using the spindle bar to vary the cutting radius of the rotating cutting tool and the machine table to feed the workpiece toward the cutting tool.