Abstract: An rear engine end frame for a compact wheel loader has an engine compartment with open corners behind the rear wheels of the loader. The open corners are closed by wraparound bumper corners made from relatively heavy metal castings that serve as counterweights as well as bumper corners. The bumper corners are detachably mounted to the engine compartment to permit ready access to the ends of the transversely mounted engine and to other components located in the rear corners of the engine compartment.

Abstract: Top link assemblies for a construction machine are typically used to adjust the pitch angle of a cutting edge of a blade. The present top link assembly has an elongated member and a block member connected to the blade and a frame, respectively, of the machine. The elongated member has upper and lower surfaces defined on a body portion and a pair of spaced openings therethrough. The block member has a lower surface substantially coplanar with the lower surface of the elongated member and a pair of spaced threaded openings therein substantially coaxial with the pair of openings in the elongated member. A pair of spacers having notched end portions are disposed in a stacked relationship on the upper surface of the elongated member. A pair of threaded bolts extend through the notched end portions of the spacers and the openings in the elongated member for threading into the block member, to secure the top link assembly at a first predetermined length.

Abstract: A frame assembly for an operator's compartment includes an upper roof portion, a lower base portion, and first and second side support assemblies connected between the roof portion and the base portion. Each side support assembly includes a straight part, comprised of a formed tube, and a curved part, formed as a fabricated box section having several individual wall plates. The fabricated box section curved parts are stronger than the formed tubes and are, therefore, in the area of highest stress.

Abstract: A tappet (10) for an internal combustion engine having a main body (12) and an annular rim (17) extending therefrom with a ceramic wear resisting insert (20) flush therewith and maintained therein by means of an interference fit. This tappet (10) need have a wear face (14) not as great in diameter as the distance of potential contact between a cam (16) and a wear face of infinitely extended surface. The tappet (10) yielded has a very long life and a low incidence of failure.

Abstract: An electrostatic painting system has a charged conductor (22) extending along the path of travel of article carriers (11) through a coating zone (15, 16). A plenum (33) with a perforate wall (25) extends along the length of the charged conductor and is connected with a blower (30). A unidirectional flow of air is directed across the charged conductor.

Abstract: A heat exchanger has a plurality of angularly oriented and spaced cooling cores. Closure means is provided for controllably opening and closing the space between the cores for cleaning the cores.

Abstract: An improved apparatus for machining the end walls of slant axis rotary mechanisms of the type having a base, a support pivoted on the base for rotation about a first axis, a shaft journalled on the support for rotation about a second axis nonparallel to the first axis, a work holder carried by the shaft for receiving a housing element of a slant axis rotary mechanism to have an end wall machined thereon, a tool adjacent the work holder operable to perform a machining operation on a housing element received on the work holder, a drive for rotating the shaft, and a mechanism responsive to rotation of the shaft for oscillating the support about the first axis in timed relation to rotation of the shaft.

Abstract: A rotary mechanism including a housing defining an operating chamber, a rotor journalled within the chamber, at least one seal receiving groove in the rotor, a seal within the groove, a spring within the groove and urging the seal into sealing engagement with the housing, a source of oil under pressure, and an oil conduit in fluid communication with the source and ending in an opening in the groove beneath the spring and positioned to be closed by the spring so that the spring additionally serves as a check valve opening to permit oil to enter the groove when oil under pressure is directed to the conduit and prevents pressurized gas from entering the conduit from the chamber.

Abstract: An improved slant axis rotary mechanism of the type including a housing defining a chamber having a radially outer spherical wall and a radially inner spherical wall interconnected by opposed, generally radially extending side walls. A shaft is journalled within the housing and has an angularly offset portion within the chamber. A rotor is within the chamber and journalled on the angularly offset portion. The mechanism is provided with an improved cooling system including a plurality of coolant receiving conduits in the walls in close proximity to the chamber. A thin, wear resistant layer is disposed on the walls within the chamber and interiorly of the conduits. The conduits are located closely adjacent the intersections of the side walls and the spherical walls to provide excellent cooling.

Abstract: An improved slant axis rotary mechanism including a housing defining a chamber, a shaft journalled in the housing and having an angular eccentric within the chamber and a rotor within the chamber and journalled on the eccentric. The eccentric includes a radially outwardly extending thrust collar located between the ends of the eccentric. The rotor includes a hub and a peripheral flange and is defined by a centerpiece including the flange and part of the hub and having a bearing pad embracing one side of the thrust collar. An intermediate piece is secured to the centerpiece on one side thereof and has a bearing pad embracing the other side of the thrust collar. A pair of covers each defining part of the hub, are respectively secured to the centerpiece and to the intermediate piece and partially cover the latter.

Abstract: An improved internal combustion engine including a housing defining an operating chamber having a wall, an output shaft journalled in the housing and a piston operatively associated with the shaft and movable within the housing. The piston is provided with a seal receiving groove and the groove receives both a compression seal and an oil seal. In a preferred embodiment, the groove includes a step to define a relatively deep compression seal receiving portion and a relatively shallow oil seal receiving portion.

Abstract: An improved rotary mechanism including a housing defining an operating chamber, a shaft journalled in the housing and extending through the chamber, and a rotor having plural apices journalled on the shaft and within the chamber. The rotor includes apex seal receiving grooves at its apices and piston seal receiving bores intersecting the grooves. Apex seals are disposed in the apex seal receiving grooves while piston seals are disposed in the bores. Balance pistons are disposed within the bores and abut the associated piston seals adjacent the point of intersection of the bores and the grooves and fluid passages establish fluid communication between the bores and a portion of the rotor surface remote from the corresponding apex to provide for gas energization of the piston seals either by gas pressure directly against the piston seals or indirectly through gas pressure applied to the balance pistons for all cyclic stages of operation of the mechanism.

Abstract: An improved slant axis rotary mechanism such as an engine, compressor, pump, or the like. The same includes a housing defining an operating chamber with a shaft journalled in the housing and including an angularly offset portion within the chamber. The angularly offset portion includes a generally radially extending shoulder and a unitary rotor is journalled on the angularly offset portion within the chamber. The rotor includes a central bore receiving the angularly offset portion and the bore further includes a generally radially inwardly opening groove. A plurality of thrust collar segments are disposed in the groove and extend partially out of the same into embracing relationship with the shoulder. A positioning collar is located on the shaft to sandwich the segments against the shoulder. The positioning collar defines a continuation of the angularly offset portion and journals the rotor. Means are provided for holding the positioning collar against axial and rotational movement on the shaft.

Abstract: An improved slant axis rotary mechanism such as an engine, a compressor, pump, or the like. The mechanism includes a housing defining an operating chamber and a shaft is journalled within the housing. The shaft includes an angularly offset portion within the chamber, the angularly offset portion including an outwardly opening peripheral groove. A thrust collar is disposed in the groove and a rotor is journalled on the angularly offset portion. The rotor is formed of two rotor segments secured together with the rotor segments, at their interface, including complementary groove parts clampingly receiving the thrust collar.