Abstract: An extrusion die of the type particularly suited for use in underwater pelletizing of polymeric materials. The die includes a die body having a forward end face with a plurality of extrusion ports passing therethrough terminating at the forward end face. A layer of insulating material is interposed between the forward end face at the area of the extrusion ports and a subplate which is constructed from the same material as the die body. The subplate is fixedly secured to the die body so as to form a substantially integral relationship therewith. A hardened facing construction is fixedly secured to the outer end face of the subplate. Both the facing and subplate allow communication therethrough with the extrusion ports. The insulating material retards or reduces heat transfer from the heated die body to the cooled facing during an extruding operation.

Abstract: A diffusion bonding method for assembling members formed from a liquid phase system material into a monolythic structure free of flaws and distortion. Member blanks are first formed from the material as by compacting or the like and then sintered to have their full density and hardness characteristics. Following sintering, any special surface or internal features are machined into the blanks to define the members. The members are also provided with bonding surfaces adapted to be placed in mating engagement with each other. The members are placed in an assembled relationship with the bonding surfaces engaging each other to define a bonding zone. In some cases, it may also be desirable to place a weight on the assembled members to continuously urge the bonding surfaces toward engagement. In the actual bonding step, the members are heated in a vacuum environment to a temperature intermediate the melting temperatures of the material low and high melting phase components.

Abstract: A new and improved high speed snap-in type bearing retainer or cage and a bearing construction wherein the retainer includes means to effect retainer piloting and thereby enhance retainer control and stability during high speed applications while accommodating ease of retainer installation into an associated bearing construction. The retainer is of a one-piece plastic or nylon construction having a cylindrical retainer body and a plurality of ball receiving pockets positioned on one side of the body so as to extend axially outward thereof. The pockets include entrance areas at the outermost ends thereof which are defined by opposed, yieldable fingers dimensioned to capture a ball member therein. Web areas are interposed between adjacent pockets circumferentially of the retainer body and extend axially outward a distance greater than the pocket entrance areas. A first pilot rim is provided circumferentially of the retainer body to pilot against at least one of an associated inner and outer bearing race.

Abstract: A structural arrangement to restrain skewing of the individual cylindrical rollers which comprise a roller type bearing. At least one of the inner and outer bearing race defining means includes a pair of laterally spaced apart side flanges to partially capture the rollers therebetween with the opposed roller ends each associated with one of the side flanges. At least one of the side flanges is defined by a separate flange member which is selectively movable toward and away from the other side flange. This flange member is urged into engagement with the roller ends associated therewith and causes the rollers to be axially moved so that the roller other ends engage the other side flange. This relationship effects close maintenance of the rollers between the side flanges to prevent roller skewing during bearing use. The means for urging the flange member may advantageously comprise resilient or spring type biasing means as well as fluid pressure.

Abstract: A void-free electrical conductor for power cables including a stranded electrical conductor formed of a central member and a plurality of abutting peripheral conducting members, the stranded conductor having a primary layer of electrical insulation heat shrunk about the exterior thereof and having an insulation material completely filling the internal space of the conductor within the primary external electrical insulation layer, the filler insulation adapted to fill all interstices between individual conducting strands outward from the abutment points between peripheral conducting members and the area inside of the abutment points being insulated by the insulation around the central conducting member to thereby form a completely void-free filling of the space within the primary electrical insulation in order to prevent the axial flow of any liquid or gaseous substance therethrough, said primary electrical insulation layer being void-free to increase the dielectric strength of the final electrical conductor c

Abstract: A rotary cutting tool having a cylindrical body with a plurality of flutes and a cutting tool insert mounted at the end of each flute adjacent the body cutting portion end face. The cutting inserts are mounted so that insert first cutting edges are spaced slightly axially outward of the tool body and extend at least generally radially thereof. A coolant flow passage extends coaxially through the body and includes radial branches communicating with the inserts. Preferably, the coolant flow passage is open at the body cutting portion end face and the branches comprise grooved areas in the end face. Each insert includes a coolant flow channel therein extending adjacent to and coextensive with the first cutting edge. An entrance area for these channels communicates with an associated one of the branches. In the preferred arrangement, each insert includes first and second cutting edges with the second cutting edges being slightly spaced radially outward of the cutting tool body.

Abstract: An indexable insert drill particularly suited for use in machining soft metals such as aluminum or the like. The drill includes an elongated body having a drilling portion with at least one groove extending axially along a portion thereof from the drilling portion end. In one embodiment, a generally triangular cutting insert is fixedly mounted in a receiving pocket included in the groove so that in cutting presentment, the insert cutting edge extends radially of the drilling portion from an innermost end area at the drilling portion longitudinal axis to an outermost end area outwardly of the drilling portion side wall. The cutting insert is configured so that the cutting edge will have neutral lead, neutral radial rake and positive axial rake when the insert is mounted in the receiving pocket. The receiving pocket includes a back tapered side wall defining an insert retaining area for conveniently capturing a side of the cutting insert.

Abstract: An indexable insert drill having a cylindrical body with two flutes and a cutting insert mounted at the end of each flute. The cutting inserts are mounted so that each presents a cutting edge of a length less than the radius of the drill with each edge being positioned to provide negative lead and effectively neutral radial and axial rake. The first of the cutting edges intersects the longitudinal axis of the drill body and extends radially outward to an end area spaced inwardly from the circumference of the drill body. The second of the cutting edges extends from an outer end area radially outward of the drill body circumference to an inner end area radially inward of the radial outermost end of the first cutting edge. Preferably, the first cutting edge extends over two thirds of the radial dimension of the body and has an effective cutting length of at least twice that of the second cutting edge.

Abstract: An insert type end milling cutter and cutting insert for the same which facilitates metal removal. Each insert has a cutting edge which is defined by the intersection of a cutting face and a land area. The cutting face is disposed so as to have a neutral rake angle and the cutting edge itself lies in a single plane but has a generally sinusoidal configuration in a direction normal to the cutting face. The milling cutter includes a plurality of insert locating grooves which locate the inserts in a manner such that the cutting edges form straight helixes over at least a portion of the cutter length. The inserts may be reasonably retained in the locating grooves to facilitate ease of removal for repair or replacement purposes.

Abstract: A strut rod mounting assembly of the type which utilizes a pair of resilient bushings disposed on opposite sides of a vehicle frame member. A terminal end of the strut rod passes through a frame member opening and openings in the bushings with an alignment cup interposed between each bushing and the frame member. Each alignment cup includes a first cylindrical flange closely received in the frame member opening for piloting the cup itself and a second cylindrical flange closely received over an axial portion of the associated bushing outer periphery. This second cylindrical flange acts to pilot the associated bushing and thereby eliminates the need for internal piloting and pivoting means which adds high load forces on the bushing inside diameter, causes bushing pinching and abraiding and reduces the mounting assembly overall life.

Abstract: A single flute drill having a single, replaceable cutting insert which can drill from the solid, as well as being used for other single point machining operatings such as turning, internal and external diameter boring, contouring and facing. The insert is configured and related to the drill body so as to provide a single, radially extending cutting edge which has an effective neutral rake and negative lead. A specific insert structure is also provided for use in the drill. The disclosed insert comprises a solid body having parallel upper and lower faces each generally in the shape of an equilateral parallelogram and joined along their peripheral edges by side walls. One cutting edge is formed along the juncture of one side wall and the upper face and is inclined along its length toward the lower face. A second cutting edge is formed along the juncture of the lower face and a second side wall which intersects the first side wall at a corner.

Abstract: The specification and drawings disclose a collapsible tap of the type including an elongated, cylindrical body or housing having an axially extending actuating plunger mounted for selective movement longitudinally of the body. The outer end of the plunger has a generally conical portion which functions to provide camming surfaces. Suitable chaser cutting elements are mounted for radial movement in the body. Each element includes a surface in engagement with a corresponding camming surface of the plunger such that axial movement of the plunger produces radial movement of the elements. The elements are maintained in engagement with the camming surfaces by clip members which extend radially from the conical portion of the plunger with resilient, laterally directed terminal portions that engage grooves formed in the sides of the elements.

Abstract: An apparatus for opening and closing the draft hood discharge opening and vent and fuel line of a fluid fuel-fired heating device such as a domestic water heater. The disclosed apparatus includes a diaphragm-type expansible chamber fluid motor assembly positioned in the burner fuel supply line. The motor assembly is mechanically linked to a damper assembly such that the supply of pressurized fuel acts to actuate the motor for opening the damper assembly prior to the motor assembly admitting fuel to the burner. Additionally, when the supply of fuel is terminated, the motor assembly does not close the damper assembly until after the motor assembly stops fuel to the burner.

Abstract: A single flute drill having a single, replaceable cutting insert which can drill from the solid, as well as being used for other single point machining operatings such as turning, internal and external diameter boring, contouring and facing. The insert is configured and related to the drill body so as to provide a single, radially extending cutting edge which has an effective neutral rake and negative lead. A specific insert structure is also provided for use in the drill. The disclosed insert comprises a solid body having parallel upper and lower faces each generally in the shape of an equilateral parallelogram and joined along their peripheral edges by side walls. One cutting edge is formed along the juncture of one side wall and the upper face and is inclined along its length toward the lower face. A second cutting edge is formed along the juncture of the lower face and a second side wall which intersects the first side wall at a corner.

Abstract: A safe box for deposit of money or other valuables to prevent theft of same includes separable parts releasably locked together by first and second locking means respectively having key operated first and second release means. The first release means is positioned between the parts and is accessible through a limited access opening in one of the parts. The second locking means has a blocking member which blocks access to the first release means through the limited access opening and also holds the first locking means in a locked position until the second release means is operated to unlock the second locking means.

Abstract: The specification and drawings disclose an apparatus for permitting molding of components such as turbine blade assemblies and the like without the use of complex multipart molds. The disclosed apparatus comprises first and second mold halves carried by cooperating platens for relative movement toward and away from one another along a path. A connecting assembly is provided for attaching the first mold half to its respective platen in a manner which permits it to have free movement in directions perpendicular to the path and rotary movement about an axis parallel to the path. Additionally, a control assembly is provided to cause the first mold half to undergo predetermined transverse and rotary movement during movement along the path toward and away from the second mold half.

Abstract: The specification and drawings disclose an apparatus for applying icing to the vertical sides of a cylindrical cake. The disclosed apparatus comprises a vertically-extending nozzle having a narrow vertical outlet slot adapted to be opened and closed by an oscillated valve member. The outlet slot is closely spaced from a horizontal turntable driven at a selectively variable speed and adapted to rotate a cylindrical cake about its axis. Icing is supplied to the nozzle by a positive displacement pump. Control means are provided for simultaneously starting the pump and opening the valve member. The control means include an adjustable timer so that the time period of icing dispensing can be closely controlled.

Abstract: The specification and drawings disclose a manifold-type dispensing head assembly. The head assembly disclosed comprises an elongated main body adapted to be mounted horizontally and defining a longitudinally-extending main manifold chamber. A plurality of spaced discharge passages extend vertically downwardly from the main manifold chamber. Flow through the discharge passages is controlled by a first longitudinally-extending slide valve mounted in the lower surface of the main body. A dispensing outlet subassembly is releasably connected to the main body beneath the discharge passages. The subassembly includes a recess which extends longitudinally and defines a small secondary manifold chamber which receives flow from the discharge passages. Outlet or dispensing orifices extend downwardly from the secondary chamber at locations corresponding to the desired pattern of discharge. A second valve is carried in the subassembly. The second valve controls the final discharge from the dispensing orifices.

Abstract: The specification and drawings disclose an apparatus for dispensing a fine dispersion of grease into the interior of baking pans. The disclosed apparatus comprises a continuous screen belt which moves above a conveyor on which the pans are traveling. Above one run of the belt is an air chamber from which high-velocity, short-duration air jets are directed downwardly through the screen. The air jets are laid out in a pattern generally corresponding to the shape of the interior of the baking pans. Additionally, a roller and hopper assembly is provided to apply a coating of grease to the mesh so that the air passing therethrough causes the grease to be dispersed into the pans.

Abstract: An improvement in multi-flapper check valves wherein each flapper is urged toward closure by an independent spring or springs, thereby improving the valve response for closure.