Abstract: A piston for an internal combustion engine, having a combustion chamber with an overhanging lip formed by resistant metal insert anchored in the piston by means of members extending from the insert and embedded in the piston material. A portion of the free end of each member is located in a cool portion of the piston and mechanically keyed therein and is preferably also metallurgically bonded to the piston material in order to prevent the insert being loosened during service.

Abstract: A hand control arrangement for a hydrostatic transmission having a single manually actuated control to vary the driving direction and speed of the transmission and wherein the movement of the hand control lever is limited to a predetermined path making it possible for the operator to sense various speed levels of the transmission.

Abstract: A control assembly for a vehicle transmission comprising a control member pivotable about a first axis between at least two discrete positions for selecting different drive speeds of the transmission and about a second axis between two outer positions and an intermediate position for selecting forward, reverse and neutral drive conditions respectively.

Abstract: A method of manufacturing a piston for an internal combustion engine in which a cast-in insert comprising a combustion chamber lip and a piston ring carrier joined by radial limbs is secured against loosening in service by spraying metal or cermet into a peripheral groove partially in the ring carrier and partially in the piston body a band firmly bonded to the carrier and the body. The carrier may be castellated to interlock with the piston material.

Abstract: A fabricated corner structure having a single piece outer member and two piece inner member construction for receiving tubular members generally perpendicular to each other encompassed by the inner and outer members with a vertical support member perpendicular to the tubular members welded to the outer member. The three tubular members form the corner of a ROPS structure.

Abstract: For use in ROPS, a square section tube-type truss or support is reinforced by a round-section tube which fits snuggly into the first tube (or vice versa). The reinforcement enables the use of only one roll-over frame and the use of the same cab assemblies on light and heavy machines.

Abstract: In a vehicle a safety frame and a cab, the cab entirely enclosing a personnel compartment is supported within the safety frame by resilient support members while the frame is rigidly mounted on the vehicle. Each of the support members includes at least one layer of elastomeric material secured between each of the leg members of the cab panel adjacent thereto for resiliently supporting the cab on the leg members such that in one embodiment the elastomeric material of each support member is loaded only in shear by the cab and in both compression and shear in a second embodiment, and the support members are in a plane containing the center of gravity of the operator and cab.

Abstract: A hinge assembly for the hood of a vehicle engine compartment which applies a spring force to counterbalance the weight of the hood so that the hood moves to an initial open position without the assistance of manual effort and can be moved from the initially open position through an arc greater than 90 degrees with a substantially constant manual force.

Abstract: An engine has a swingable hood with an exhaust stack and air inlet drain cap mounted thereon for swinging therewith which are operative with a muffler outlet and an air cleaner inlet, respectively, when the hood is in an operative position enclosing the engine of a vehicle on which the hood is mounted. A deflector is located between the muffler and air cleaner and oriented to deflect cooling air for the muffler to exhaust vents and the stack which stack forms an annulus around the muffler outlet to give a jet pump type action to enhance the draft for the stack which entrains the effluent from the muffler outlet while at the same time providing a radiant and convective heat shield for the air cleaner.

Abstract: In a crawler vehicle having a rear housing or frame: a pair of hydrostatic transmission pumps located on the center line of the crawler are connected to a pair of motors arranged along the transverse axis by a manifold to form a cruciform unit. The cruciform unit is mounted in the rear housing.

Abstract: A control module for tractors in which the various controls for operating the tractor are supported in a group for convenient operation by the operator of the tractor and may be installed as a unit in the tractor relative to an operator station that is flexibly supported relative to the main body of the tractor. The various controls are resiliently and flexibly connected to control various devices making up the unsuspended main body of the tractor. The tractor may have either an enclosed cab or an open platform forming an operator station resiliently mounted to the unsuspended main body of the tractor to inhibit the transmission of vibration, shock loads and noise, and the module is supported from the station to minimize relative movement between the operator and the controls. The controls are connected by flexible means serving to dampen the transmission of vibrations and the like from the unsuspended main body of the tractor.

Abstract: Linkage for supporting a mower beneath a tractor, having first and second pairs of interconnected links and with the first pair pivotally mounted at their forward ends to the front axle of tractor and rockable about a fore and aft horizontally disposed axis. The second pair of links is connected to the frame of the tractor. Foot pedal means connected to the linkage adjusts height of mower in opposition to force of spring means attached to linkage and frame which tends to urge linkage into folded condition beneath tractor frame. Rocking action of front axle through linkage causes mower to follow ground contour to provide an even cut.

Abstract: Two blades of the cutter blade assembly are pivotally mounted separately by means of a coupler on opposite sides of a drive shaft and move to an extended position by centrifugal force. Upon one blade striking an inseverable object both blades are caused to move to a retracted position. In moving from the extended position to the retracted position the impacted blade coacts with the opposite blade to move the latter to a retracted position.

Abstract: A office chair having an endless, rigid frame of metal supporting a seat and backrest in which the metal frame has a generally U-shaped configuration with curved surfaces facing a viewer and with engaged, complementary portions of the frame, seat and backrest not only accurately locating the components relative to each other for assembly, but also concealing the unfinished edged of upholstery material and maintaining it tightly and at the same time covering portions of the frame to conceal its massiveness.

Abstract: A synchronizing mechanism for change speed gears using a friction energized synchronizer ring which is operable through stop and locking members to prevent collapse of the synchronizer ring until synchronism occurs, also employs a cup member to contain the synchronizer ring for the purpose of freeing the same from adverse frictional effects.

Abstract: This specification describes a multiple throw selector apparatus for use in change speed gearing which includes speed ratio shift rails to engage synchronized clutches and a range lever which engages an unsynchronized clutch. The range shift rail is moved between its various operative positions directly by a selector member. The ratio shift rails are actuated by the selector member through a pivoted link thereby increasing mechanism advantage between control lever and ratio shift rails.

Abstract: This specification discloses a transmission clutch brake for use in a torque delivery gear system. A rotatable clutch disc driven by an input shaft and selectively engageable by a pressure plate carries a pair of plates. The plates embrace a brake plate carrying friction material on opposite faces thereof. Upon disengagement of the pressure disc from the clutch plate one of said plates of said pair is moved axially relative to the other thereof in a clamping manner to grip the brake plate against rotation. The latter brake plate is connected to a stationary splined hub utilizing a snap ring. The ring acts as a torsion spring and permits limited slight rotation of the brake plate and clutch disc clamped thereto as well as the input shaft to facilitate meshing of gears of the transmission.