Abstract: A toothbrush having two arms pivotally jointed with cleansing means at the other extremities of both arms. The jointed section comprises several methods for manipulating and indexing the arms relative to each other to permit brushing in various parts of the mouth. The jointed section is composed of bifurcated bridging members for one arm, and an accommodating bar at the other arm disposed to lie between the bridging members. The bridging members and bar are pivotally held together by a control pin which can be manipulated to permit one arm to move relative to the other. The bar and bridging members may be frictionally in contact with each other or can be connected thru gearing and socket devices each disposed to function through special control pins for causing the engagement and disengagement of the said gear and socket devices. Simple finger manipulation of the controlling pin causes selective indexing of the toothbrush arms relative to each other.

Abstract: The invention relates to a hinge for pivotally mounting flood lamps. The hinge includes a first and second knuckle. The first knuckle has an internally threaded socket. The second knuckle includes a first part and a second part, and the parts are interlocked for simultaneous rotation. The first part further has a rotation resisting surface facing the first knuckle. The hinge further includes a pair of shroud members, which each have counterbored aperatures therethrough and are arrange on each side of the second knuckle. There is a pair of threaded hinge pins, one each passing through a shourd member and a part of the second knuckle and threadably received in the first knuckles threaded socket. Loosening the threaded hinge pins permits relative rotation of the knuckles while tightening of the threaded hinge pins fixer the angular orientation of the hinge. The counterbores of the shrouds make difficult uninvited (i.e. vandalism) tampering of the hinge.

Abstract: An adjustable handlebar for a bicycle according to the invention comprises two handlebar members whose adjacent ends are pivotally supported by two bolts whose extended axes are crossing in front of the bicycle, gear teeth formed in the adjacent ends of the handlebar members so as to pivotally move one handlebar member by pivotally moving the other handlebar member, two sets of isosceles triangle-shaped thrust serrations at adjacent ends of the handlebar members and an upper portion of a handlebar stem, thereby anchoring the handlebar members when the bolts are tightened and moving the adjacent ends of the handlebar members away from the upper portion of the handlebar stem when the bolts are loosened and the handlebar members are rotated, and a cam and cam follower assembly having a lever for engaging and disengaging the serrations, thereby simply changing positions of handlebar members symmetrically.

Abstract: The present invention discloses a wheelstand for handicapped or immobile persons having a generally rectangular main frame rotatably supported on a ground support surface by relatively small wheels while larger wheels are rotatably mounted to the frame and manually rotated by the user in order to propel the frame. A generally planar body support structure is pivotally carried by the frame so that the angular position of the support structure can be varied with respect to the frame while still enabling the user to grip the larger wheels and propel the wheelstand.

Abstract: A spring pivot joint comprises two face plates with heavy serrations or ribs between them, both sandwiched between Belville springs or spring washers, the washers being held in a strongly stressed condition by a hollow rivet. The face plates have integral wings or tabs extending radially beyond the washers for attachment to the companion mannequin parts to be jointed. Since the rivets are hollow, a simple rod can extend through a plurality of them to hold them in coaxial alignment while being attached to the jointed mannequin parts.

Abstract: Apparatus for erection of arcuate walls of poured concrete has one or more deformable sheathings secured to turnable supports which are movably secured to one another by composite girders having alternating rigid variable-length links and fixed-length connectors which are affixed to the supports. The angular positions of the supports are changed by changing the length of the links. Locking devices are provided to hold the links against angular movement relative to the neighboring connectors when the sheathing assumes the desired shape. The locking devices can constitute separable components or they may be permanently mounted on and/or integrated into the links and/or connectors.

Abstract: An angle adjusting device for adjusting the relative positions of musical instruments, such as a bass drum and jazz tomtom. The angle adjusting device has two rods for holding the musical instruments separately. Each rod has a head which includes an annular inclined toothed portion. A wing nut mounted on one end of the axle and a lever having a cam surface for abutting against the wall of either one of the heads, through which full engagement, partial engagement and disengagement can be accurately set. Thus, rotation of one head relative to the other to adjust the angle of two rod can be implemented simply by singlehanded actuation of the lever.

Abstract: A pair of joint halves each include substantially cylindrical joint portions and end portions. Aligned openings are formed through the joint portions to receive therethrough a connecting pin which connects the joint halves together into a articulable joint. The connecting pin includes teeth on its outer surface sized to mate with teeth formed in the aligned openings of the joint halves. The connecting pin has a locked condition wherein its teeth mate with the teeth of both the joint halves and thus prevent relative rotation thereof, and an unlocked condition wherein its teeth are not in mating engagement with the teeth of one of the joint halves thus permitting relative rotation of one joint half with respect to the other. In one embodiment a spring urges the connecting pin into its locked condition and an operating button, disposed at one end of the connecting pin, facilitates movement of the pin so that its teeth move out of mating engagement with the teeth on one of the joint halves.

Abstract: A foldable bicycle frame includes a substantially vertical center tube at a mid portion of a bicycle frame, an upper center tube and a lower center tube to be partially fitted in upper and lower ends of the center tube, respectively. A front half of the bicycle frame includes the center tube and a rear half of the bicycle frame include the upper and lower center tubes, thereby enabling the front and rear halves to be folded or extended about the vertical center tube into a folded position or running position. The bicycle frame comprises radially annularly arranged continuous V-shaped teeth on connection surfaces of the upper and lower center tubes and the center tubes, and clamping means for clamping the center tube and the upper and lower center tubes in engagement with the teeth on the connection surfaces, thereby enabling the bicycle frame to be folded or extended by releasing and then clamping the center tubes.

Abstract: Exercise apparatus which includes pedaling apparatus carried on a frame, the pedaling apparatus including a first pedal on a crank arm fixed to a first shaft rotatably mounted on the frame, a second pedal on a second crank arm fixed to a second shaft rotatably mounted on the frame, both shafts having a common axis, and means for the selective angular indexing of the first crank arm relative to the second crank arm between at least a first position in which both crank arms are disposed in the same angular orientation and a second position in which the first and second crank arms extend in opposite directions from their common axis.

Abstract: A first substantially hollow, substantially hemispherical joint half is disposed adjacent a second substantially hollow substantially hemispherical joint half to form therewith a substantially spherical articulable joint. A tapered opening extends through the first joint half to receive the tapered end of a connecting pin and provide a frictional contact fit therewith. Spline like teeth are formed on the internal surface of an opening extending through said second joint half to receive spline like teeth also formed on said connecting pin to provide a sliding but not rotative fit therewith. A threaded fastener, received through said second opening and into the respective end of the connecting pin means when turned in a first predetermined direction draws in the connecting pin means to draw the joint halves together and provide a strong articulable joint with each half capable of rotating with respect to the other half about an axis through the connecting pin means.

Abstract: An improved clamp for releasably and adjustably securing accessories, such as hanger rods for parenteral solution containers, to medical tables. The clamp has a generally cylindrical body comprising two main sections arranged in axial alignment: a base section and a cup section. Annular rows of intermeshing teeth are provided along the opposing end faces of the respective sections to prevent relative rotation of those sections unless such movement is accompanied by slight axial separation. The cup section includes a chamber terminating in an enlarged end opening that rotatably receives the cylindrical shank of a first operating knob. The knob is threadedly supported upon a hollow stem which is joined at one end to the base section and which extends axially through the chamber of the cup section.

Abstract: A support knuckle for a luminaire has a first body attached to the luminaire housing and a second body which can be attached to a mounting location. The first body has a recess with peripheral teeth and a passage to the housing interior. The second body has teeth which are matable with those on the first body at various angular positions. The two bodies are held together by a threaded fastener passing through an elastomeric sleeve.

Abstract: A clutch for rigid but releasable connection of two coaxial parts of construction, preferably rotating shafts, having flanges centrally arranged at their proximate shaft ends, in which torque is transmitted by a frontal spur or cog gear. Both flanges are clasped by tension sleeves by means of radially protruding collars. The axial force arises by shrinking the tension sleeves which, in a heated condition, are radially positioned on the flanges. An advantage in connection with Cardan joints is that the external diameter of the clutch is no larger than a cross joint or universal, which can transmit the same torque.

Abstract: A soil cultivating machine comprising soil cultivating members which are rotated about upwardly extending axes and carried by a gear box which extends transversely of the intended direction of operative travel whereas behind the cultivating members a supporting roller is provided that is vertically adjustable on the gear box by means of carrying arms. Legal provisions in force in various countries limit the maximum widths of the machine for highway travel, for example, to three meters. The gear box can be limited to the prescribed dimension, by, at least at one end of the gear box, providing an end plate which extends above the gear box and pivotally engaging on the inboard side thereof a carrying arm for the roller. In this manner the outer surfaces of the two end plates for the gear box are exactly at a relative distance corresponding to the maximum width allowed while at the same time there is no sacrifice in the width along the gear box required for connecting the roller.

Abstract: A throttle valve shaft projecting from a boss on an internal combustion engine throttle body has a nut which is adjustable for establishing a selected clearance between the nut and the boss to thereby limit end float or axial displacement of the shaft. A lever or other retainer secured to the shaft has an interfering engagement with the nut to prevent rotation of the nut about the shaft and thereby maintain the selected clearance between the nut and the boss.

Abstract: A visor control having an elongated elastically deformable clamp of U-shaped cross-section with sides contacting a cylindrical pivot rod to hold the visor in position. The pivot rod has noncontinuous flats broken by lobes which align with recesses formed in the sides of the clamp. The sides of the clamp engage the edges of the flats as the rod is rotated within the clamp to provide a torque on the pivot rod as the sides abut the edge of the flats to provide snap-up action to move and hold the visor in a stored position. In a preferred embodiment of the invention, the rod includes a plurality of alternately staggered flats and lobes with the lobes positioned to selectively align with recesses in the sides of the clamp.

Abstract: A tiltable steering apparatus for vehicles is provided wherein a movable bracket is rotatably supported in a holder member of a fixed bracket, a latch member having a toothed portion engageable with teeth of the holder member is provided on the movable bracket and means are provided for positively engaging and disengaging the toothed portion of the latch member and the teeth of the holder member.

Abstract: A wheel bearing assembly driven by a universal joint is arranged to consist of two individual finish-assembled units having its components joined together so as to be easily disconnected and removable. The universal joint is formed with an outer joint member having an end face which is arranged with gear teeth engaging complementary gear teeth formed on the inner bearing ring of the wheel bearing assembly for torque transmission purposes whereby a construction having a shorter axial length may be achieved.

Abstract: The connection assembly includes two generally L-shaped brackets having arms with through bores defined in their end portions. One of the bores of the first bracket is alignable with a mounting bracket for other component of a linkage system. Similarly, one of the bores of the second L-shaped bracket is alignable with another component of the linkage system. Other bores of the L-shaped brackets are alignable with each other. A bolt is insertable through each of the pairs of aligned shafts to releasably interconnect the parts. A spring is positioned between the head of the bolt and one of the surfaces of the combined parts for exerting a biasing force tending to fix the relative positions between the parts. The connection assembly provides three adjustment axes so that an end of the linkage system can be positioned and releasably retained at any desired orientation.

Abstract: A connecting device for a toy building set includes two identical connectors, each comprising a primary tubular sleeve having a toothed rim on one end face and a secondary tubular sleeve integral with the surface of the primary sleeve. The secondary sleeve is disposed at right angles to the primary sleeve with one end face adjacent the toothed end face of the primary sleeve. The sleeves have a circular cross-section permitting rotation about a shaft, but rotation is prevented by a pair of stop rings which are frictionally and slidably mounted on the shaft and serve to clamp the sleeves together. When assembled, the two connectors are interlocked by meshing of the toothed rims.

Abstract: A pivotal spark plug connector (10) has a wire clamp part (12) and a spark plug terminal receptacle part (16) pivotably connected together and held in a desired position by a position-retaining mechanism (18) including a pair of substantially planar, circular portions (32, 34) disposed with opposed faces (40, 42) of each in abutting relation such that teeth (36, 38) formed on the opposed faces (40, 42) in the form of radially extending ridges can interengage with one another under the bias of a spring (52) or other resilient element (70, 74). The wire clamp part (12) and terminal receptacle part (16) can be positioned relative to one another under a force which overcomes the bias of the resilient element on the circular portions (32, 34) of the position-retaining mechanism (18). A boot (58) having a bore (62) of two different diameters and external serrations (68) to facilitate flexing is arrangeable over the connector for shielding it from contaminates.

Abstract: This invention is related to illumination devices and more particularly to flashlights and flashlight holding implements. A flashlight holding implement and flashlight is attached to a hat brim and enables the user to direct and adjust the angular position of the light beam, and eliminate the need for the user to hand-hold the flashlight while performing the task before him.

Abstract: Mounting means for an airfoil member for mounting the member above the roof of the cab of a tractor in order to reduce the air-drag on the trailer unit, the inclination of the airfoil member being adjustable by clampable pivot means provided in support arms. At the right hand clampable pivot point, a pair of grip washers having undulations are welded to the support arm and tube bracket and urged into light clamping contact by means of a spring washer and nut and bolt. At the left hand clampable pivot point, a pair of grip washers having undulations are likewise welded to the support arm and tube bracket, and rigidly held in engagement by means of a head having an internally threaded portion engaging with the threaded shank of a bolt, a detachable handle being provided for quick clamping, and release to thus enable the driver to release the clamping mechanism and reset the inclination of the airfoil member in minimum time and effort.

Abstract: A ratchet bearing is provided for mounting the slats in a shutter frame which incorporates directly into the bearing, by virtue of a trunion pin having a ribbed surface which rotates within a bearing collar having inwardly directed detents, a multiple detention action such that when the slat is rotationally opened or closed, the bearing will seat in one of a multiplicity of detent positions so that the shutter will not sag shut or otherwise move after it has been set.

Abstract: A walk-behind garden implement including a wheel-supported frame carrying a horizontal base member. A handle extends upwardly and rearwardly from the base member for manual guidance. A yoke of U-shaped cross section is interposed between the handle and base member. The lower end of the handle is pivoted between the side walls of the yoke for adjustment of angular elevation. The bottom wall of the yoke has a vertically extending pivot connection for side-to-side, or azimuthal, adjustment of the handle. The handle carries an arcuately arranged set of spaced recesses at its lower end and the base member is also formed with a set of recesses. A first latching member pivoted in the yoke has an upwardly projecting tooth for holding the handle rigidly at a selected elevation. A second latching member pivoted in the yoke has a downwardly projecting tooth for engaging one of the recesses in the base member so that the handle is held rigidly at a selected azimuth.

Abstract: A soil cultivating machine has a frame portion extending transversely of the intended direction of operative travel and a row of cultivating members on that portion are rotatable about upwardly extending shafts. Behind the cultivating members there is a ground-engaging support roller pivotally connected with the frame portion by means of supporting arms. A mechanism, including a screw spindle or an hydraulic ram is provided for adjusting the roller in a direction of height to vary the working level and a locking device for fixing the roller against pivotal movement relative to the frame portion is also included. The locking device includes two parts that can be clamped against one another with relatively co-operating toothings interengaged. A resilient device on a rod of the mechanism is provided to allow relative movement between the co-operating toothings at the time of clamping the parts together.

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 slack adjuster assembly for coupling a brake shaft to a power actuator comprising a bushing member fixed to the brake shaft and having an annular flange therearound and having an annular bearing surface next to the flange which carries a series of teeth on a shoulder facing toward the bearing surface, a lever having a hub member journaled on the bearing surface and having a toothed shoulder interengaging with the teeth on the flange when the hub member is moved toward the shoulder, a spring urging the hub member toward the flange to keep the teeth normally engaged, and a pawl carried in one of said members and having lugs engageable with teeth of the opposite member to separate the teeth by compressing the spring and to advance the engagement of the teeth in a direction determined by the direction of rotation of the pawl.

Abstract: A power transmission device adapted to be employed with a chain saw for providing a rotary output in a plurality of directions. The device includes a housing having an input shaft coupled with an output shaft where the input and output shafts are right angles to one another. The housing serves as the support for the driven mechanism and provides mounting flanges about both the input and output shafts. The mounting flange associated with the input shaft cooperates with a chain guideplate to adjustably mount the housing to the chain saw. By simply loosening two screws, the orientation of the output shaft relative to the chain saw can be changed by up to substantially 180 degrees. The mounting flange around the output shaft is designed to allow a 360-degree range in orientation of the driven device about an axis coincident with the axis of the output shaft.

Abstract: A ski safety device for deflecting a ski leaving its direction from crossing over to the other ski, has two brackets each movable between a normal position in which it extends upright to the respective ski, and a folded position in which it folds down toward the same with resistance. The brackets pivot in the direction of travel and about an axis which is transverse to this direction.

Abstract: A prosthetic device which is adjustable in the transverse plane includes a flanged element moldable in a plastic socket and an element having a toothed superior surface. The plastic socket is formed about the flanged element while using the toothed superior surface as a mold surface. A fastener engages the toothed superior surface and this affixes the formed socket to the toothed element. The fastener may be loosened so that incremental rotation of the toothed element relative the socket is permitted.

Abstract: Relative rotation of the two rotational members of a fuze during dynamic dition of firing are eliminated by interlocking annular, serrated, axial seating surfaces of the two members. A radially sinusoidal split ring in between radially adjacent annular recesses of the members cooperates with an inclined wall of the outer member's annular recess to provide an axial force biasing the serrated surfaces into engagement during static conditions. The split ring further serves as a locking device to hold the two members together as an assembly.

Abstract: The present invention refers to an attachment device for attaching the forward profile bar of an awning or sun-blind to hinge arms. The device comprises a shaft portion adapted to be attached to the outer end of the hinge arm and a profile portion adapted to be attached at the forward profile bar. Both portions are resiliently connected to each other and provided with guide means tending to hold the two portions in a predetermined normal position and to return them to this position when they have been brought out of the normal position.

Abstract: A tool comprising a first body, a shaft mounted to the first body and rotatable about an axis extending through the first body and which is movable longitudinally with respect to the first body, a second body mounted to the shaft, and a clamp mounted to the second body and rotatable about an axis extending through the second body.

Abstract: A device that enables selective angular positioning of the handle of a conduit bender. The device includes two opposed mounting members having serrated surfaces. They are releasably joined so that one may be selectively pivoted about an axis relative to the other. One member is operatively connected to a conduit bender handle while the other member is connected to the rigid body of the conduit bender. An offset provision is made between the handle and an adjacent mounting member. The handle can therefore be removed and located adjacent either side of the rigid body while remaining pivotal in a 360.degree. arc about the axis. A threaded member may be tightened to lock the members together.

Abstract: A truck mirror comprising a U-shaped support on which a mirror is pivotally mounted. The ends of arms of the support are pivoted to vertically spaced brackets that are adapted to be mounted on the truck. Pivot means are provided between the ends of the support arms and the brackets and comprise two members of low friction material fixed to the arms. The pivot members define a chamber in which an axially movable member is positioned. One of the pivot members has axially extending circumferentially spaced grooves therein and a movable member has complementary projections. The movable member is yieldingly urged toward the member having the grooves such that the mirror is held in angularly adjusted position but may be readily moved to a new angular position by manual manipulation.

Abstract: A locking mechanism for the height adjusting suspension system of side delivery rake is disclosed. A support trunnion bearing for the rotatable axially-adjustable height control rod of a rake has at least one crown thereon to cooperatively engage a mating washer which is biased into contact therewith by a compression suspension spring to thereby impede relative rotational movement between the rod and the bearing.

Abstract: A coupling flange on a torque transmitting shaft or the like for coupling in face-to-face relationship with a counter-flange has at least two tooth systems on its coupling surface and each system comprising a plurality of substantially parallel axially projecting teeth having inclined flanks. At least one tooth in each tooth system has a different height, spacing or shape from the other teeth in the tooth system and the tooth systems are engagable with a complementary configuration on the counter-flange so as to connect nonrotatably the flanges.

Abstract: A bearing assembly having a rolling contact bearing affixed to a housing, an outer race fixed to the housing and an inner race, wherein a driving member, the inner race and a driven member are clamped together by a through-bolt extending through the driving member, the inner bore of the inner race and the driven member. At least one end face of the inner race is provided with axially extending teeth. A stepped sleeve is placed between said one end face and the respective member at that one end face, the stepped sleeve having an axially extending projection and being deformable by engagement with the teeth for positive engagement therebetween. The respective member has a recess into which the projection extends, the stepped sleeve extending into and positively engaging the bore of the inner race.

Abstract: A swivel mount includes a support bracket including a pair of parallel swivel arms spaced apart to accommodate a loudspeaker assembly therebetween, and having coaxial openings therethrough respectively carrying therein two plunger-actuated expansion type fasteners, the expansible portions of which extend inwardly from the swivel arms. Two swivel members are respectively fixedly secured to opposite sides of the loudspeaker assembly, each having a hollow cylindrical portion receiving therein the expansible portion of the adjacent fastener for support thereon and for rotational and axial movement with respect thereto. Each swivel member carries detent teeth and is axially movable for meshing engagement thereof with complementary detent teeth on the adjacent swivel arm for preventing relative rotational movement of the swivel member and swivel arm.

Abstract: The present invention relates to a toggle joint, specially to an angular positioning device for a gripping means for gripping tongs where the movements of the tong jaws of the gripping means are regulated by a control cable whose one end is fixed in the gripping means and whose other end is connected to an operating trigger in the handle of the gripping tongs. Said device is formed as a toggle joint having two cooperating joint surfaces designed with locking means which engage one another and forming clutch couplings.

Abstract: An armrest for dental chairs and the like can be rotated 90.degree. in a horizontal plane about a vertical axis to permit easier entry and exit of a patient to and from the chair. The armrest is automatically locked at either the forward position or the 90.degree. position and is unlocked simply by lifting vertically on the armrest. A single set screw for connecting the armrest to the dental chair not only makes the armrest operable but also allows the armrest to be offered as an optional feature of the dental chair.