Abstract: An apparatus for the locking of a component or part free of play, especially a drive shaft in a null position, but also other elements, such as a machine part. The drive shaft can be rotated about its lengthwise axis and positioned in a predetermined rotational position. In the null position the drive shaft provided with an impact or contact element is locked by means of a first locking element constructed as a hard layer and a second locking element constructed as a resilient contact or impact member, each of which locking elements are rotatable into the rotational plane of the drive shaft. The drive shaft is locked by the locking elements in such a manner that the first locking element and the contact or impact element attached to the drive shaft as well as the second displaceably mounted locking element are successively acted upon or contacted by the action of the restoring force of a spring which is effective at the second locking element.

Abstract: The power tool has a spindle lock member rotating with the output spindle with a blocking member normally rotating with the lock member but capable of being restrained against rotation. The blocking member extends beyond the lock member and is provided with an opening through which the lock pin can project if the blocking member is at rest or rotating slowly but the opening precludes lock pin entry at normal operation speeds. The lock member has a recess of substantial angular embrace so the ends of the recess can be impacted on the lock pin.

Abstract: A parking brake mechanism for an automatic transmission having a parking gear and a parking pawl, the latter being pivoted on a transmission housing, a cam plate and a detent plate journalled rotatably on a support shaft, for rotation to preselected angular positions determined by the detent geometry, a cam surface on the cam plate registering with the pawl and forcing the pawl into engagement with the gear, preloaded spring means joining said cam plate and said detent plate together and accommodating relative displacement thereof upon rotation of said detent plate when the pawl is out of registry with a space between adjacent teeth on said gear.

Abstract: A train of tandem arranged, wheeled, refuse receptacles, pulled by a prime mover along a path, are successively moved over a dump chute to drop their contents when their discharge doors are successively tripped, the contents falling downwardly through the chute and into the entrance opening of an underground compactor. The reciprocating ram of the compactor passes the contents sidewise into the awaiting container of a refuse collection vehicle, compacting the contents therein.

Abstract: A movable member, including a first piston in a hydraulic cylinder, is biased toward a first position by a reset spring and toward a second position by a trip spring which is compressed between the first piston and a second piston in the same cylinder. The second piston is disposed for limited floating movement relative to said movable member. Hydraulic fluid under pressure is admitted into a first chamber between the first piston and the adjacent end of the cylinder, and a constricted fluid passage in the movable member enables the hydraulic fluid to flow between the first chamber and a second chamber defined by the second, floating piston and the other end of the cylinder. With equal, relatively high fluid pressure in both chambers, the trip spring is charged and the movable member is held by the reset spring in its first position.

Abstract: A hand brake for a wheeled vehicle comprises an operating shaft carried within a sleeve affixed to the frame of the vehicle to accommodate axial displacement and rotation of the shaft attendant to shifting the brake between respective braking and non-braking positions. A locking lug on the shaft is adapted to engage and secure a receiving member mounted on one of the vehicle wheels upon rotational and axial movement of the shaft into the braking position, and stops on the shaft cooperative with the sleeve to releasably secure the shaft in the respective braking and non-braking positions.

Abstract: Drafting board apparatus features a dual-spring brake to enable the angle of tilt of the drafting board to be selectively altered. Use of oppositely-coiled springs secures the board against movement, while a control linkage enables near-simultaneous release of said springs to enable adjustment of the board.

Abstract: A safety brake adapted for positively locking the crank and counter-balance weights of oil well pumping apparatus against rotation, particularly for placement and servicing of the pumping unit. In the preferred embodiment shown, a cylindrical member is bolted to a brake drum which rotates in combination with the shaft from the gear box carrying the crank and counter-balance weights. The cylindrical member has a plurality of holes disposed about its periphery. A movable engaging bar is rotatably carried on a shaft mounted to a bracket adapted for connection to the bearing cap on the gear box adjacent the brake drum. The bar contains a locking tongue for engaging the holes in the cylindrical member. The bar is rotatable from a position engaged with the cylindrical member and a position removed therefrom. A spring bias is provided to hold the bar in either of the two positions.

Abstract: A manually operable locking mechanism for an automatic transmission has a pawl which engages a toothed member connected to the transmission output shaft. The pawl is controlled for engagement and disengagement with the toothed member through a manually operated cam which moves a lock lever toward the engaged position. The lock lever, through a tension spring, urges a lock strut to enforce engagement of the pawl. On manual disengagement, the cam contacts and moves the lock strut to relieve the locking force from the pawl thus permitting disengagement of the pawl and the toothed member. The lock lever abuts the cam after disengagement to establish the relative positions of the cam, lock lever and lock strut when the disengage position is selected.

Abstract: An inertia activated locking device for a motor vehicle seat of the type having a stationary part and an adjustable part, comprising a locking gear coupled to one part, a pinion meshing with the locking gear and being supported for free movement in an arcuate slot the center of curvature of which coincides with the center of rotation of the locking gear, and an arresting member spaced apart from an end of the arcuate slot at such a distance as to allow free rotation of the pinion when the locking gear rotates at a steady speed and to engage the pinion when the locking gear is abruptly accelerated so that it takes along the pinion as far as to the end of the slot facing the arresting member.

Abstract: In a parking mechanism of an automotive automatic transmission having a park gear, a parking pawl which can mesh with the park gear, a cam mounted on an actuator rod to change the position of the pawl and an actuator support fixed to the inside of a transmission case to slidably support the actuator rod, the actuator support is produced by press-forming of a sheet metal as a one-piece member whose middle portion is shaped so as to support and guide the actuator rod and the cam with the purpose of reducing production cost. The actuator support is easily fixed to the transmission case by forming two slits in the transmission case at the stage of casting the case and inserting two end portions of the actuator support respectively into these two slits each together with a leaf spring.

Abstract: A transport mechanism for articles between a pair of conveyors includes a constantly driven drive member, a driven member and a ball and detent mechanism intercooperating between a pair of confronting surfaces of the members. The transport mechanism is mechanically phased in and out in operation in timed relation to movement of the conveyor to which articles are moved. Mechanical phasing in and out is carried out by a lever having a tooth adapted for engagement in a notch of the driven member and a wheel cooperative with a rail including a gate on the drive member. The transport mechanism is phased out of operation when the wheel enters the gate and phased in in operation when the wheel exits the gate.

Abstract: A tooth formed on a brake pawl has, at a portion facing the outer peripheral surface of a brake gear coaxially mounted on the output shaft of the transmission, first and second inclined surfaces which are bounded by an intersectional line parallel to the axis of the output shaft. The inclination angle of each surface with respect to a tangent line passing through a point where the intersectional line is in contact with a circular path swept out by the outer peripheral surface of teeth formed on the brake gear is greater than zero degrees. With this, the brake pawl is pushed way from its engaged condition due to collisions between shoulder portions of the teeth and one of the first and second inclined surfaces above a predetermined vehicle speed.

Abstract: A hinged mount for vehicle seats having reclinable backrest includes a motor driven pivot axle connected to a setting shaft for the angular position adjusting and arresting device. The shaft supports for joint rotation an axially displaceable coupling disk having on each face thereof a ring of coupling teeth. The pinion of the driving motor is in mesh with an idling gear supported on the setting shaft and a cup spring urges the coupling disk into engagement with the idling gear. In the case of accidental rotation of the setting shaft caused by inertial forces acting against the backrest in the case of an accident, for example, the coupling teeth of the coupling disk slide on the toothing of the idling gear and the teeth on the other side of the disk engage an arresting ring which is secured to the reclinable mount part.

Abstract: A device for limiting the rotation of a member rotatable about an axis extending from a base, while permitting rotation clockwise and counterclockwise through a preselected number of turns. An actuating lug is rigidly secured to the member, a disc is rotatably secured to the base, the disc having a plurality of bosses rigidly secured adjacent the periphery thereof, the bosses being spaced apart from each other in equal angular relationship, the bosses being engaged by the actuating lug to cause angular displacement of the disc upon each rotation of the member. A stop lug is rigidly secured to the base in the path of the disc bosses to engage therewith and arrest angular displacement of the disc and thereby the rotation of the member.

Abstract: A park-lock mechanism for a vehicle transmission having a rotatable gear held against rotation by a pawl movable in two directions and being free of a pivot mounting. The pawl has arcuate surfaces which are contacted by a control member, for moving the pawl in a direction radially of the gear, and there is a sliding support for the pawl and a tension spring for positioning the pawl relative to the gear. The force of rotation of the gear itself is transmitted to the pawl, after initial release of the pawl by the control member, and thus further force on the control member is only a minimal amount since the force from the gear assists the movement of the control member after that initial control member movement.

Abstract: The present wheel chair lift apparatus has a rotatable post at the front of a doorway in the side of a van. A pivotally mounted electric motor rotates this post through a pinion and gear drive at the lower end of the post. A carriage for the wheel chair lift platform is slidable up and down along this post. A vertical lead screw is coupled to the carriage through a ball nut and a lost-motion coupling. The lead screw is driven from an electric motor through a belt and pulley drive at its upper end. The belt is frictionally restrained to prevent the lift platform from coasting down when the lead screw drive motor is stopped. The lift platform has a pivoted retainer lip at its outer edge which is pulled up before the lift platform can move up or down. The lift platform has a slidable extension for enlarging its effective size when a wheel chair comes on.

Abstract: A locking mechanism is provided for an apparatus having a first member movable relative to a second member providing a plurality of spaced holes therein including: a housing secured to the first member; a lock pin extendably retractably mounted in the housing for insertion into the holes in the second member; and a powered control circuit having an actuated member movably mounted within the housing and connected to the lock pin, the actuator member providing differential force applying surfaces selectively exerting a predetermined locking force to hold the lock pin in the holes and a lower indexing force permitting substantially unrestricted relative movement between the first and second members and automatic insertion of the pin into one of the aligned holes.

Abstract: A vehicle wheel lock assembly for enabling the operator of a vehicle having a frame to lock one or more of the four wheels, at will, when the vehicle power is inoperative, which includes a normally retracted reciprocal locking rod mounted on and movable transversely of said frame adapted when advanced to interlock with a wheel. The normally retracted reciprocal actuating rod mounted on said frame for longitudinal movement. The control housing within the vehicle supports a control lever which projects from the housing and is operatively connected to the actuating rod for effecting selective reciprocal movements thereof. Gear mechanism on the frame interconnects the locking rod and the actuating rod.

Abstract: A park-lock mechanism for a transmission having a rotatable gear and a double lug latch pivotally mounted adjacent the gear and having its lugs spaced apart a distance different from that of the spacing of the teeth on the gear, whereby one of the lugs will always align with the gear teeth spacing for securing the gear against rotation. The latch is also supported on a lever which is under the influence of a control mechanism including a cam and a spring and a control rod.

Abstract: Spring-biased longitudinally movable pin means are mounted to be engageable with circumferentially spaced recesses around the inside faces of non-pivoting casters that are, in turn, positioned under the mid-portion of a rollable service cart so as to provide for an automatic braking system for such cart. Cam means provided to retract the springbiased braking pins from the caster recesses and manually operated linkage means extending from each end of the cart to connect to said cam means provide for a cart operator stationed at either end of the cart to release the braking system and thereby permit movement of the cart.

Abstract: Electrically actuated safety apparatus for automatically stopping a rotating shaft at a predetermined rotational speed and adapted for use with rotary components such as those of elevator safety brakes. The apparatus comprises a plurality of rigid, circumferentially spaced stopping blocks which rotate with the shaft, a selectively actuable stopping member, and means for automatically moving the stopping member into engagement with one of the stopping blocks or lugs when the shaft reaches a predetermined, unsafe angular velocity. Shaft velocity is electrically monitored by a proximity switch which senses the speed of the rotating stop lugs and provides an output control signal when an unsafe condition is indicated. The stopping member is shifted to a stop position in the path of the rotating stop lugs by the action of a solenoid which is responsive to the control signal from the proximity switch.