Abstract: An adjustable mechanism including a journal portion and a non-continuous ring member that encircles the journal portion. The ring member has relatively displaceable end parts. A lever member extending in a plane normal to the axis of the journal portion is mounted through a pin on one end part and through another pin on the other end part and the lever member is swingable relative to the ring member to leverage the parts in either of opposite directions. An adjustably positioned member is provided to produce adjustably controlled displacement of the end parts of the ring member.

Abstract: A Kelly bar adapter for use with earth anchor driving machinery is disclosed. The adapter allows for pivotal connection of an earth anchor or earth anchor extension rod thereto. Thus, a vertically hanging Kelly rod may be attached to an earth anchor or its associated extension rod while the same is diagonally extending out of the ground. A tool for removing earth anchors having an integral eyelet or an eyelet which is threaded onto an earth anchor is also disclosed.

Abstract: An irreversible continuous pivotal connection between a fixed part and a movable part includes a fixed side plate fixed with respect to the fixed part and having an arcuate array of teeth, as well as a movable side plate fixed with respect to the movable part and having an arcuate array of teeth. The movable side plate is mounted parallel to the fixed side plate for rotation about a fixed common axis. A planet gear is positioned between the fixed and movable side plates, and has two external arcuate arrays of teeth with different diameters and locally meshing with the arcuate arrays of teeth of the fixed and movable side plates. An eccentric member is mounted for rotation about the fixed axis and presses on the planet gear so that rotation of the eccentric member in one direction causes epicyclic rotation of the planet gear in another direction.

Abstract: A hopper assembly has an upwardly facing mouth for receiving granular or powder materials, and structured and arranged for preventing or reducing the escape of material from the hopper. The assembly includes at least one resiliently flexible baffle extending obliquely downwards from a substantially fixed, generally horizontally extending top edge portion to a free edge portion. Another member may be provided having an edge portion in the vicinity of and extending substantially parallel to the free edge portion of the baffle. The baffle is arranged with respect to the other member such that if material to be received by the hopper assembly falls onto the baffle, the weight of the material tends to cause the baffle to deflect away from the other member, permitting the material to fall between the baffle and the other member. Being resilient, the baffle returns or tends to return to its original position.

Abstract: A leg assembly comprises a tubular member and a plurality of radial leg members which are connected to the tubular member through a connector. The connector includes a sleeve member with radial lug members. Each leg member has a forked joint end connected pivotally to each lug member. Positioning pin holes are provided in the lug member and slide openings are provided in the joint ends. Positioning pins are respectively threaded through the positioning pin holes and the slide openings. The positioning pins can be locked at a desired position so as to immobilize the leg members.

Abstract: A joint structure having first and second members each including parallel surfaces and a common pivot axis extending perpendicular to the surfaces. One of the surfaces includes an array of detents and the other surface includes an array of recesses. The detents and recesses have discrete angular positions in which they are engaged with each other and retain the joint members in discrete angular positions. The structure also includes a pivot pin having a base portion connected with the first joint member and an integral resilient portion extending into an opening with a recess having a cam surface which is formed in the second joint member. The pin has a central axis which defines the pivot axis for the joint members. The integral resilient portion of the pin includes a plurality of resilient fingers and a cam surface. The cam surfaces of the fingers and the recess of the opening cooperate to cause the fingers resiliently to bend toward the pivot axis when the first and second joint members are urged apart.

Abstract: An improved clamp fixture is provided for supporting a medical instrument or the like in a selected orientation relative to a variety of different support structures, such as an upright pole, a tabletop edge, a bed rail, etc. The clamp fixture comprises an open-sided base bracket for receiving the selected support structure to extend through the base bracket along a first axis. A clamp screw is carried by the base bracket and is adjustable to securely retain the support structure against an inner support surface of the base bracket. A frame member is mounted on the base bracket for rotation generally about a second axis perpendicular to the first axis, with a spring-loaded lock pin releasably securing the frame member in one of several preset rotational positions. At least one frame arm extends outwardly from the frame member for connection to the medical instrument or the like in a manner permitting rotation of the medical instrument about a third axis perpendicular to the first and second axes.

Abstract: The present invention relates to an improved structure of an automobile tire auxiliary device, especially relates to such a device capable of holding the tire to step up the friction force of the tire through a recess and an adjustable lug on the claw plates so that the automobile can pass through the land of snow, sand, mud and swamp or upward slope by virtue of poking the sand and earth.

Abstract: Locking structure for securing a four-bar linkage or the like on an implement in a raised position to remove an earthworking tool or row unit from ground engagement. An overcenter spring arrangement selectively biases a strap pivotally connected to one arm of the linkage toward or away from a member located on the opposite arm. When the strap is biased toward the member, raising the tool or row unit causes the strap to engage the member to prevent rocking of the linkage and thereby secure the device out of ground contact. Reversing the spring arrangement and raising the device causes the strap to move out of locking engagement with the member for normal operation. An elongated device includes pins for aiding the operator in both moving the over-center spring arrangement between positions and raising the tool or row unit.

Abstract: An upright, detachably attachable to the frame of a wheelchair, supports a vertically adjustable mounting for a service tray. The mounting includes a quick release cam for precisely locating and pivoting the service tray into and out of a position of use.

Abstract: A positioning joint for a folding ladder comprising a first joint member, a second joint member disposed between the first joint member, and a hollow shaft inserted into central holes of the first and second joint members. The joint further includes a turning plate disposed on an inner wall of a first disc portion of the first joint member, a crank-shaped strip, and a spring mounted around the hollow shaft. A push knob is inserted into the hollow shaft, and a pin is inserted into a pair of axially elongated holes in the hollow shaft and into a pin hole in the push knob. The crank-shaped strip has a pair of small projections adapted to be inserted into engaging holes of the first and second joint members as well as a pair of large projections adapted to be inserted into the first and second joint members and the turning plate. The crank-shaped strip also has a central portion fixed between the hollow shaft and the spring.

Abstract: A hinged butt joint for connecting struts to multijoint fittings used in space structures is disclosed as two end fittings pivoted together, one of which is bifurcated and the other having a cammed butt end extending between the bifurcation with a pivot pin through aligned openings so that the fittings are rotatable to a desired angular position. Nominal manufacturing tolerances are used throughout. A wedge is forcibly fitted into the base of the bifurcation when the fittings are colinear, and bonded to the base in that position during manufacture or assembly, to preclude freeplay in the joint under alternating compression and tension leads and to create a solid mechanical path though which load is transmitted and heat and electricity conducted.

Abstract: The invention relates to a locking mechanism for use with two members which are mutually rotatable about a common pivot. The two members are a platform body (4) and a leg (1) therefor which is adjustable so as to vary the height of the platform body. The locking mechanism comprises a flat surface (6) on one of the members tangential to an opposing convex cylindrical surface on the other member, the cylindrical surface being coaxial with the pivot (2). The two surfaces define therebetween a substantially V-shaped gap which accommodates a cylindrical roller (7) in tangential frictional contact with the opposing surfaces. The roller is biased by releasable biasing means (9) towards the apex of the V-shaped gap, thereby to prevent rotation of the members in a direction which tends to urge the roller towards the apex, except on release of the biasing means, and freely to permit rotation in the opposite direction.

Abstract: A quick-change coupler for the work implements of an excavator beam with an adjustable support frame (4) at the beam, said support frame receiving by means of a hook jaw a cross-pipe fixed to the tool. The hook (6) widens starting at its tip and is provided on its backside with a slanted surface (7) cooperating with a corresponding bevel (23) at the tool in order that, after the engagement between hook and cross-pipe (21) and further pivoting of the support frame (4), this support frame be automatically centered until it is locked with respect to the tool.

Abstract: A compound garden type or agricultural tool having a handle which is adapted to be fitted to a blade type of implement which is angularly adjustable for use as a spade, shovel or hoe and a fork type implement which is similarly adjustable. Additionally, the fork is adapted to be fitted with a pronged attachment which converts the fork into a rake. The adjustability feature comprises an angulated shoulder surface on the blade and fork type implements and having a projection which is operable to cooperate with a recess and a flat surface in the handle for establishing a straight, inclined, and right angled position for the particular implement engaging the handle.

Abstract: A connecting structure for a baby carriage disposed between a pair of push rods (1) and a push rod-connecting member (7) has a pair of brackets (16) extending inwardly from the push rods (1), a pair of turning shafts (17) provided on the brackets (16), a pair of sockets (18) supported by the turning shafts (17) for a folding movement of the sockets relative to the brackets (16). Each socket (18) receives one end of the push rod-connecting member (7) so that the member (7) can be rotated, around its longitudinal axis. A pair of engaging sections (19) is fixed on the push rods (1) at positions opposed to the lateral surfaces of the ends of the push rod-connecting member (7). A pair of lock control sections (20) is secured to the ends of the push rod-connecting member (7) for cooperation with the respective engaging section. For this purpose each locking section has an abutting portion (22) of relatively large radius and a clearing portion (23) of relatively small radius.

Abstract: A pair of elongated arm members are provided disposed in generally the same plane and including one pair of overlapped ends pivotally interconnected for relative swinging of the arm members about an axis generally normal to the aforementioned plane. Lock structure is shiftably supported relative to the overlapped ends of the arm members and is movable between a first active position locking the arm members in adjusted angularly displaced positions relative to each other and a second inactive position allowing at least substantially free relative angular displacement of the arm members. The ends of the arm members remote from the overlapped ends thereof include non-circular recesses formed therein for receiving nuts or bolt heads therein against rotation of the nuts or bolt heads relative to the arm members and the lock structure is shiftably supported from one of the overlapped ends of the arm members for limited displacement along the axis of relative oscillation of the arm members.

Abstract: A stay mechanism for two hingedly connected members which are moveable between a first unengaged position and a second engaged position. An arm is hingedly attached at one end to a first member. The other end of the arm has a protrusion which is resiliently held in the pocket portion of a resilient strip attached to a second member, when the members are in the second position. A camming surface, facing the pocket of the resilient strip, defines, with the pocket, a resilient enclosure for the protrusion. The protrusion may be forced to slide out of the enclosure when the two members are moved towards the first position, by the resilient deformation and opening of the pocket. The resilient strip also has an inclined portion adjacent the pocket portion which serves as a guide for the protrusion into the pocket, when it is desired to move the members from the second position into the first position.

Abstract: A device for enabling a pivotal arrangement of a tray or table top at a seat back or back portion of a passenger seat, especially a motor vehicle seat. The device is adapted to enable an adjustment of an inclination of the tray or table top as soon as the tray or table top has been pivoted into a substantially horizontal in-use position. The adjustment may be effected by toothed segments attached to the tray and back of the passenger seat or it is also possible for effecting adjusting by setscrew arrangements devised to press against a forward edge of the tray. The setscrew arrangements may be connected to one another by a drive or connecting belt so as to enable a simultaneous operation of the setscrew arrangements.

Abstract: A tilting table for a woodworking tool comprising a support member, a pair of trunnions pivotally attached to the support member for movement about a common axis, a table top attached to and supported by the trunnions, a pair of wedge blocks mounted to slidably engage the trunnions and support member, and carried on a rod having a nut threaded thereon such that inward displacement of the nut urges the wedge blocks toward each other, thereby jamming the wedge blocks between the trunnions and the support member. The wedge blocks are spring loaded such that outward displacement of the nut allows the wedge blocks to be urged outwardly from their jamming engagement, thus permitting the table top and trunnions to be pivoted relative to the support member.

Abstract: The present baby carriage has a pusher rod (2) which can be pivoted to selectively assume a back-fronting push position or a face-fronting push position with respect to the baby sitting in the baby carriage. A mechanism for changing the direction of the pusher rod (2) comprises a slider (5) slidably mounted on the pusher rod (2), a connecting member (37) having a predetermined length, its opposite ends being pivotally connected to the slider (5) and the upper end of a front leg (16), respectively, a stopper (42) mounted to be slidable along the longitudinal direction of the connecting member (37), and a stop plate (50) formed with first and second recesses (51, 52) engageable with one end (47) of the stopper (42) at different positions on its circumferential surface and fixedly mounted on the upper end of the front leg (16).

Abstract: An improved hinge for a collapsible ladder includes a pivot pin which has a sufficiently simple construction to permit it to be fabricated by die-casting on a cost-competitive basis. The simple construction is made possible by an improved axial detent arrangement for a shaft which rotates and slides within the hub and to which the hinge locking pins are secured. The detent arrangement includes a detent bore extending radially biased against the shaft. A suitable detent recess in the shaft is angularly aligned with the detent bore for each locking position of the shaft. Axial alignment of the bore and a recess is achieved by fully extending the shaft out of the hub against the restoring force of a bias spring in the hub. The recess and bias member are contoured to permit disengagement of the detent by rotation of the shaft but not by axially applied forces.

Abstract: This invention relates to a locking device applied to the supporting stand of percussion instruments, for example snare stand, tom-tom holder, cymbal stand, timbales stand and all kinds of joints of drum outfits, etc., which locking device allows the splaying angle of the two arms to be adjusted to any operable degree without the inconvenient constraint of the calibrating teeth, thereby largely simplifying the operating procedure and enhancing the practicality thereof.

Abstract: A sturdy metal folding cart is useful as a garden wheelbarrow, a wheeled dustpan, and as a stable stand for debris bags of different sizes. The cart is constructed for compact packaging and ease of assembling by a purchaser, as well as ease of folding and erecting for use. The car possesses a foldable stabilizing leg with positive locking brackets which also support the leg and form attachment points for handle components. Convenient latches for folding side and front panels are included in permanently assembled relationship with the cart.

Abstract: A scissor frame lock includes a circular plate sandwiched between the corresponding legs of the scissor frame at their point of intersection. The legs and the plate are formed with aligned openings for slidably receiving a pivot pin. One end segment of the pivot pin is bent back on itself so that the end segment bypasses the adjacent leg and extends through a second opening in the plate. The pin is biased outwardly so that when the two legs are more or less perpendicular the pin segment projects into an opening in the other frame leg to lock the legs in that orientation. The legs are folded/together by depressing the pin so as to disengage its end segment from that opening.

Abstract: A locking hinge joint includes a pair of spaced pivot supports such as a bracket of U-cross-section, a hinge member mounted for swinging movement between the supports, and a reciprocable lock mounted on the supports slidable parallel to the swing axis to and from a position in which it positively locks the hinge member against swinging. Two hinge members mounted on a single bracket can be locked simultaneously.

Abstract: A quick-disconnect coupling for fixing tools or the like to a powered arm including a base, mounting structure on the base for affixing the same to an arm, a pair of hooks having oppositely facing openings, one of the hooks being immovably mounted on the base and the other being movably mounted on the base, and a latch movably mounted on the base and engageable with the movably mounted hook for preventing movement thereof. Interengaging cam surfaces are disposed on the movably mounted hook and the latch whereby the hook may cam the latch aside while moving to a latched position and there are also provided interengaging surfaces on the movably mounted hook and the latch so that forces applied to the latch by the hook, when the hook is latched, will not tend to move the latch to release the hook.

Abstract: A lockable hinge for hingedly connecting structural members of a hinged assembly such as a folding ladder comprises two hinge parts which are pivotable with respect to a common hinge axis, a first hinge part being formed with a cylindrical protruding portion journalling in a cylindrical bore formed in the second hinge part. A locking member slidingly mounted on the first hinge part is controlled by a resiliently urged ear-shaped pivoting link adapted for selective stop-engagement with an actuating lever pivotingly mounted on said first hinge part.

Abstract: The hinge joint of a tom-tom holder for maintaining an adjustable angle relationship between a support bar mounted on a bass drum and a tom-tom holding arm adapted to hold a tom-tom comprises a housing connected to the support bar and a bushing connected to the tom-tom holding arm. A resilient band extends along the inner periphery of a cylinder defined in the housing and has one end fixedly secured in the cylinder inner surface and has the other end biased by a band fastening screw threaded in a threaded bore formed in the housing tangential to the cylinder bore. The annular projection of the bushing is received in the cylindrical opening formed by the resilient band. The annular projection and the cylinder bore are maintained in co-axial relationship by an aligning bolt and ring unit. By loosening the band fastening screw, the annular inner face of the disk portion of the bushing and the adjacent end face of the cylinder in the housing are maintained in slidable contact.

Abstract: An attachment for a standard bicycle which is installed by cutting the bicycle frame members in a substantially vertical plane and rigidly attaching a pair of hingedly connected bars to the cut ends. The bars may be welded to the bicycle frame members, or affixed at their ends to tubular members which are bolted or otherwise attached to the front and rear portions of the bicycle frame members. Movement about the hinged connection selectively places the bicycle either in the standard riding position or in a folded position with the front and rear wheels side-by-side.

Abstract: A seat recliner including seat back and cushion supports connected about a pivotal axis and positioned relative to each other against pivoting in an infinite position adjustable manner. A housing is fixed to one of the supports and defines a pair of locking surfaces extending about the pivotal axis on opposite sides thereof with curved shapes that have increasing radii from the axis in opposite directions. A pair of cam members pivotal on the housing about the axis have respective cam surfaces that oppose the locking surfaces of the housing from opposite sides of the pivotal axis with curved shapes that have increasing radii in the same direction as their associated locking surfaces. A pair of locking slides are slidably mounted on the other support in a pivotally fixed relationship.

Abstract: In an antenna for television, radio or the like, including antenna elements radiating from a boom, a self-locking hinge intermediate the ends of an antenna element for permitting folding of the element for convenient boxing, or the like and for permitting unfolding and elongation of the element for use; the hinge comprising a hinge connection that is spaced from one side of the element and a snap latch that is spaced from the opposite side of the element, thereby rigidifying and strengthening the hinge connection.