Abstract: In a tack seat lasting machine the wipers are moved lenthwise of the shoe and inwardly thereof under the action of a single piston-and-cylinder arrangement. For setting the appropriate "nail pattern", the action of said piston-and-cylinder arrangement is terminated by adjustable stroke limiting means, comprising a valve actuated by an abutment, the valve moving with the wipers and the abutment being adjustably positioned in the path of the valve. A further abutment, spaced from the first-mentioned abutment, controls the rest position of the wipers. The wipers are arranged symmetrically centrally of the machine, and the heel band is capable of clamping a shoe in the position in which it is presented by the operator, thereby avoiding the need to adjust the wiper for lefts and rights.

Abstract: A novel process for improving adhesion of polymeric bodies to paint coatings and substrates carrying paint coatings having the improved adhesion capability. Essentially the process involves the step of irradiating a paint coating comprising a synthetic polymer and where the coalesced residue of the paint coating has a critical surface tension of wetting of at least about 35 dynes per centimeter or less. In the preferred embodiment of the invention the paint coating is irradiated in the presence of a radiation sensitizer to increase the critical surface tension of wetting of the irradiated paint coat to about 40 dynes per centimeter or more.

Abstract: In a machine for cement lasting side portions and the heel seat of shoes, the side portions are lasted by lasting rolls and the heel seat by wiper plates. For applying adhesive, each lasting roll has an associated nozzle which applies adhesive progressively in advance of its associated lasting roll. Furthermore, when the lasting rolls reach the point of termination of side lasting, they remain in pressing engagement with the shoe bottom, but their rotation is terminated, and in this condition the nozzles continue to apply adhesive in the heel seat region. This may be achieved by merely discharging adhesive from the stationary nozzles and allowing it to run into the heel seat, or alternatively the nozzles may track bodily into the heel seat. Thereafter, the lasting rolls and nozzles are retracted and heel seat wiping can take place. The invention may also be incorporated in a machine in which the whole of the shoe bottom is lasted.

Abstract: A station for testing electrical components is provided with spaced pairs of cooperative lead-engageable contacts, these pairs being yieldingly openable to arrest a lead arriving therebetween for the test. At least one contact of each pair has an abrading edge which may be shaped to penetrate transversely any wire oxidation of the lead to obtain accurate electrical measurement though requiring only low contact force.

Abstract: In a pulling over and toe lasting machine, the pincers first grip the lasting margin above the wiping plane, whereafter the upper is tensioned about its last by upward movement of the last support, from an initial, lowered, position to a position in which the last bottom is in the wiping plane, and by downward movement of the pincers. The machine also comprises auxiliary means by which any wiper remaining in the wiping plane after the upper has been tensioned as aforesaid can be moved downwardly out of said plane so as not to impede the in-wiping movement of the wipers. When the auxiliary means is actuated, furthermore, the gripping force applied by the pincers to the upper is reduced to allow slippage of the upper in the pincers.

Abstract: A billet loader for an extrusion press having simple premeasured adjustment capabilities facilitating the sequential loading of different diameter billets into a billet container therewith without requiring difficult realignment adjustments. The billet loader comprises a head having a pair of angled support surfaces, with a third adjustable support arm therebetween, permitting simple adaptability to a plurality of billet diameters. The head also includes a shearable connection with its support arm to minimize damage in case of loader malfunction.

Abstract: A rigid, lightweight positioning system is disclosed for use with a high speed sewing machine. The positioning system includes a rigid, lightweight frame that is slidably mounted in a predefined plane. The frame is driven within the plane by a remotely located motor. A carriage is slidably mounted on the frame so as to move in a direction transverse to the direction of movement of the frame itself. This carriage is driven along its axis by a second remotely located motor. The overall arrangement of the elements within the positioning system is such as to minimize the introduction of vibration at the point of sewing.

Abstract: Method and apparatus for controlling the parameters of injection molding processes in a machine having a barrel with a plasticating chamber and a screw, rotatably and slidably disposed in said chamber, hopper means adjacent one end of said chamber communicating therewith and nozzle means disposed in the other end of said chamber communicating with a mold. Control of the injection molding process is achieved through an event recognition philosophy by sensing screw position, screw injection velocity, melt temperature, comparing the values at certain instances during the work cycle with known or desired values and using these values, changes of values and differences of values to monitor and initiate changes in the process parameters.

Abstract: Sealing means for controlling leakage of material between closely spaced apart, relatively moving coaxial annular surfaces. Essentially, leakage is controlled by providing a plurality of helical sealing channels on one of the relatively moving surfaces to resist flow of leakage liquid between the surfaces. The sealing means are particularly adaptable for controlling leakage from processing passages of rotary processing apparatus.

Abstract: Adhesive compositions comprising polyfunctional (meth)acrylate monomers, a source of free radicals, adhesion promotors which are poly(meth)acrylates having carboxylic acid groups pendant on pyromellitic acid dianhydride residues of the molecular chain and a compatible elastomer.

Abstract: Both process and apparatus are disclosed for testing arc stud welding guns. The process and apparatus are premised on generating two electric signals, the first of which occurs as a result of a switching action at the beginning of a welding operation. The second occurs when the welding stud impacts it's counter-electrode. The elapsed time between these signals is measured and used as a basis to determine the effectiveness of the arc stud welding gun. Process and apparatus are both disclosed for testing during actual and simulated arc welding.

Abstract: A leather press in which two wedges are synchronously driven to raise a lower platen in the press from an open condition to a position adjacent an upper platen of the press. The lower platen is movably mounted on a support. The support and the wedges are in slidable engagement with one another to effect a preliminary closing of the press. A plurality of pressurizable members such as hydraulic pancake cylinders may be mounted between the movable platen and the support so that the platens are secondarily urged together by the application of hydraulic pressure, to apply the required working pressure, to a leather workpiece disposed between the platens. The hydraulic pancake cylinders are arranged to be disposed over a broad area of the lower platen to efficiently provide maximum pressure thereacross.

Abstract: A shoe side or combined heel seat and side lasting machine has two side lasting assemblies, each comprising wiping elements mounted for pivotal movement, independently of adjacent elements, about first and second axes extending respectively transversely and lengthwise of the last bottom. For providing a substantially continuous wiping surface, the first axis lies in the plane of the work-engaging surface of its associated element, along the longitudinal center line thereof, when said surface lies horizontally. Also each shoe lasting assembly can pivot bodily about an axis adjacent the edge of the work-engaging surface of the most heelwardly disposed element, in the plane of its work-engaging surface. Associated with each pair of wiping elements is a clamp pad, said pad being caused clampingly to engage the shoe, while the inwiping movement of the elements continues, by operation of a common piston-and-cylinder arrangement.

Abstract: A drilling and thread forming screw is provided with means for breaking the chips produced during the drilling process. An obstruction in the form of a truncated cylindrical element having its flat end portion substantially facing the cutting edge of the cutting surface and having its cylindrical centerline perpendicular to the cutting edge is provided on the cutting surface whereby a chip formed by the drilling process is turned back into a sharp radius, causing the chip to break.

Abstract: An improved two-part adhesive system particularly adaptable for preparing multi-pane glazing units and improved spacer frames for multi-pane glazing units.

Abstract: Endwise insertion of leads projecting generally radially, or substantially in parallel, from one side of each of a plurality of interconnected electrical components is effected in rapid reliable succession. The components are sequentially fed into the head of a machine by a tape indexing mechanism. There, when aligned with a reciprocable inserter, the leads of each component after being cut to predetermined length are separated from the tape by spaced members acting transversely on the progressively guided tape.

Abstract: Presser-foot apparatus is disclosed which is capable of automatically adjusting to various levels of sewing. The presser-foot is slidably held within a housing affixed to a needle bar. The presser-foot is biased against the housing so as to move in conjunction therewith until contact is made with the workpiece. The presser-foot exerts a steady, unvarying pressure on the workpiece while the needle associated therewith continues downwardly. The presser-foot is ultimately lifted from the workpiece during the upward retraction of the needle from the workpiece.

Abstract: A cut-clinch mechanism with a movable knife that is arranged to be slidably attached to a piston rod so that when the cutting edge of the knife engages a lead-in wire, a sensor will be contacted to indicate the lead-in wire is in a proper position for cutting and clinching.

Abstract: Adjusting means for aligning the cutting plane of the knives and the surface of a perforated die plate of pelletizing apparatus including a ring having a wedge cross section adjustable between the mountings for the plate and the knives to vary the angular relation of said mountings.