Abstract: Unique flex-lock dovetail mounting apparatus (300) is described that may be advantageously utilized for mounting radio transceivers (100) and accessories (200) in harsh environments. The housing of the radio transceiver (100) includes on one side thereof at least two channels (101 and 105) producing a dovetail. The mounting apparatus (300) includes a top plate (304); a slide plate (308) attached to the top plate (304), having on at least one end a cut-out portion (310) producing a gap (320, 321 and 322) between the cut-out portion (310) and the top plate (304), and having at least two rails (301 and 305) producing a dovetail and each adapted to insert into a corresponding one of the channels (101 and 105); and locking apparatus including a lever (306) or a thumb screw (706) coupled to the top plate (304) and the cut-out portion (310) of the slide plate (308) for flexing the cut-out portion (310) toward the top plate (304) thereby locking the rails (301 and 305) in position in the channels (101 and 105).

Abstract: An easily assembled bed structure adjustable in length and width comprises head and foot members each including a pair of side posts and parallel slidably telescoping multielement tubular cross pieces extending laterally between and separably joined at their ends to respective side posts, a pair of parallel, longitudinally extending side beams each including slidably telescoping tubular elements and separably coupled at their ends to respective posts and longitudinally spaced parallel stringers each including slidably telescoping tubular elements and separably coupled at their ends to opposite respective beams or a third longitudinally adjustable beam intermediate and parallel to the side beams extends between and is joined to the lowermost of the head and foot member cross pieces or bracket members project inwardly from the side beams for supporting a mattress. Foot pieces depend from the stringers or third beam. The components of the structure are secured in their assembled condition by separable fasteners.

Abstract: A system for supporting and deploying a rocket motor nozzle extension that is stowed in concentric overlapping relationship with the nozzle. The system includes a plurality of articulated frames having first and second pairs of links pivotally connected, respectively, to the nozzle and to the nozzle extension. Articulation for each frame is provided by a knee hinge connecting the two pairs of links at their outer ends, thereby permitting the pairs of links to swing apart. A retractable cable looped around the knee hinges of each of the frames is capable of forcing the hinges inwardly toward the nozzle and nozzle extension to force the pairs of links of each frame apart and to move the nozzle extension to a deployed position at the end of the nozzle. Retraction of the cable is accomplished by a motor driven spool on which the cable is wound.

Abstract: A mechanism (10) engageable with a threaded shaft (12) which includes a pair of nut halves (16,18) movable into and out of engagement with the shaft (12). The nut halves (16,18) are received within spaced frame plates (32,34) with one nut half (16) attached to the plates (32,34) and the other nut half (18) slidable between the plates (32,34). An elliptical cam member (44) received between the slidable nut half (18) and an end plate (36) connecting the frame plates (32,34) is operable to move the nut halves (16,18) between their engaged and disengaged positions.

Abstract: A locking ring is provided that is sized to fit about a cylindrical rod and having upper and lower edges cut away and opposed from each other along a diagonal intersecting a central axis of the ring.

Abstract: A table leg mount for attaching a table leg to a table top includes a mounting member which has an integrally formed screw shank. The mounting member is attached to the table top by a mounting plate and projects into a hollow portion on the upper end of the table leg. The screw shank passes through a hole in a resilient gripping member and engages a threaded portion on the table leg. Tightening the table leg onto the mounting member forces the gripping member to bear against a conical portion on the mounting member and to also bear against the inside of the hollow portion of the table leg thereby creating a rigid connection between the table leg, the mounting member and the table top.

Abstract: A handle rod structure of a golf ball retriever comprising a plurality of sections of telescopic tubes which can be telescopic in sequence, whereas in each two adjoining tubes, a plunger having an annular groove is provided and inserted into the inner tube. The annular groove forms an eccentric to match the annular sleeve plate which has internal eccentricity the same as that of the annular groove. The annular sleeve plate is placed in the annular groove, so that the rotation of the inner tube in one direction, causes the annular sleeve plate to tightly engage the inner wall of the outer tube, and the rotation of the inner tube in the other direction loosens the annular sleeve plate in the outer tube, thus placing the inner and outer tubes in a state such that they can freely and oppositely extend or retract, thereby achieving the actions of the multi-sectional type and length-adjustable handle rod of the retriever.

Abstract: A device for locking a rod against movement in an extending or contracting direction is disclosed. In the device, a torsion spring is provided between a cylindrical receptacle and an operating member rotatably mounted thereon. The rod member, which is inserted in the receptacle, is normally locked against movement by the torsion spring. The rod can be released from the locked state for movement in an extending or contracting direction by releasing the clamping force of the spring by turning the operating member.

Abstract: A self-locking slider mechanism for holding telescoping relatively-movable inner and outer tubular members in adjusted lengthwise position and which requires a greater force manually applied lengthwise of the members to decrease the over-all length of the members than to increase the over-all length thereof. The members can be used as a stand to provide a load-carrying capacity for the stand while still enabling adjustment of stand height with minimal effort. The slider mechanism has a body member attached to one tubular member and having an internal recess extending lengthwise thereof and opening to one side of the body with an inclined ramp plate mounted within the recess and associated with a ramp member movable therealong and which has a friction member engageable with the other tubular member.

Abstract: A telescoping support post having a bell member slide mounted thereon to engage a mouth of a musical instrument in a manner to support the instrument. The inner telescoping member has a releasable holding member eccentrically mounted thereon. This holding member has a resilient finger frictionally engaging the inner surface of the outer telescoping member to insure proper locking and release action. In addition, the holding member has cooperating stop means to limit rotation between these two positions.A similar device is operatably positioned between the bell member and the upper telescoping member so that the bell member can be adjusted vertically on the second telescoping member and held in any selected position.

Abstract: A knuckle joint assembly to fix a handle bar to a steering shaft of a velocipede, the knuckle joint includes two knuckle parts between which the handle bar is clamped with a securing sleeve being fixed to the handle bar and engaging the knuckle parts to prevent rotation of the handle bar about its longitudinal axis relative to the knuckle parts.

Abstract: A vertical post is rotatably mounted in a corner cabinet and supports a plurality of rotatable shelves which carry the cabinet door. The lower end of the post is rotatably supported by a lower bearing element which rests on a bearing member on the bottom wall of the cabinet. To enable the post and the door to be adjusted vertically, the lower bearing element is a slide supported for up and down movement in the post and having a downwardly inclined ramp on its upper end. A downwardly inclined screw extends perpendicular to the ramp and may be tightened and loosened to shift the slide downwardly and upwardly relative to the post. The head of the screw is sunk within the post to enable the shelves to be slipped onto the lower end of the post during assembly and to enable one of the shelves to pass upwardly by the location of the screw.

Abstract: Coupling assembly joining two profiled rails, more particularly for use with a shower partition, the first profiled rail having an opening extending over its entire length and an inner space. A clamping element is mounted in this inner space and has a threaded hole in which a screw threads, the second profiled rail being secured to the first profiled rail by tightening of the said screw. In order to facilitate assembly and make it possible to carry out subsequent mutual alignment of the profiled rails with little effort, there is provided that the clamping element be insertable from the side and at right angles to the longitudinal direction of the first profiled rail through the above-mentioned opening and into the inner space, one leg of the second profiled rail passing through the opening into the inner space. This leg is clamped in a gap which is formed between a bearing surface of the clamping element and a web of the first profiled rail and/or a support element.

Abstract: A fixing device for a fishing rod is used for joining a inner tube and an outer tube. The inner tube is slidably received within the outer tube and can be fixed onto the outer tube firmly. The fixing device includes a fixing piece or coupling operatively mounted on the outer tube and a packing ring made of flexible material which is urged to grasp the inner tube by the fixing piece.

Abstract: For holding a bowler's arm rigid after it is straightened, an automatically locking hinge acts between an upper strap that is worn on the upper arm and a lower strap that is worn on the forearm. The hinge has an upper hinge structure which presents a circular peripheral surface with a detent recess at one circumferential location. The hinge has a lower hinge structure with a spring-pressed locking element that snaps into the detent recess when the arm is straightened.

Abstract: A lock for a tubular telescoping support such as tripod leg includes a clamping lever for locking inner and outer members against telescoping displacement and load bearing portions interposed between the two members such that the locking force applied by the clamp is circumferentially distributed among the clamp and two load bearing portions to thereby prevent flattening of the inner tube under locking clamp force.

Abstract: A head-rest device for a vehicle seat is disclosed in which a head-rest stay mounting a head-rest in its upper portion is supported in such a manner that it can be adjusted vertically with respect to a seat back by means of a lock mechanism provided in a head-rest holder. According to the lock mechanism of the invention, a torsion lock spring is fitted into the head-rest holder through which the head-rest stay is inserted and which is fixed to the seat back. The head-rest stay can be locked relative to the head-rest holder by means of the winding force of the torsion lock spring. An operator can be rotated to rewind the torsion lock spring so as to release such locking of the head-rest stay. Thus, it is possible to adjust the vertical position of the head-rest as required.

Abstract: A releasable locking device for frictionally engaging a bar member. The device includes a cam sleeve adapted to be adjustably positioned in selected locations along the bar member. The cam sleeve has an internal surface generally conforming in shape to the external surface of the bar member entirely along its length and the internal surface of the cam sleeve normally is dimensioned the same as or larger than the bar member so as to be slidably movable along the bar member for adjustably positioning the cam sleeve in a selected location. The cam sleeve is formed of a resilient material for selective radially uniform compressed frictional engagement with the external surface of the bar member. The device also includes a pair of cam collars adapted to be operably disposed in substantially coaxial relation on the cam sleeve.

Abstract: A clamping or coupling apparatus for clamping an extension rod telescopically extendable from a tubular member includes two separate and independent clamping adjustments. The clamping apparatus is adapted to rotate freely relative to the tubular member, yet is prevented from axial movement relative to the tubular member. The extension rod is adapted to extend linearly relative to the clamping apparatus, but is prevented from rotating relative to the clamping apparatus. In this manner, a first clamping adjustment inhibits the axial movement of the extension rod relative to the clamping apparatus, so that the extension rod is prevented from axial movement and rotational movement relative to the clamping apparatus. A second clamping adjustment prevents the clamping apparatus from rotating relative to the tubular member.

Abstract: An electron microscope stage is manually movable in three orthogonal axial directions and two orthogonal rotational directions by corresponding motion transmission systems. Four of the transmission systems employ telescopic rods and a connecting pin having three resilient independently compressible sections. The pin transmits torques from one rod to the other about their longitudinal axes. One section is resiliently secured to an aperture in the inner rod, the other sections are resiliently secured to mating axial slots in the outer rod to permit relative axial displacement of the rods. The independent resilient compression of each section compensates for wear or differences in dimensions between mating surfaces while maintaining tight resilient torque coupling without backlash between the pin and the rods.

Abstract: A no drip caulking gun which includes a rigid open barrel. The caulking cartridge is inserted in the barrel. A rod is coaxially movable with the barrel. At the end of the rod a plunger is mounted. The forward motion of the plunger against the cartridge forces the caulking compound out of the cartridge, when the forward motion is stopped the built up pressure in the cartridge kicks the rod backwardly.

Abstract: The invention pertains to bedding support apparatus for supporting bed clothes above the mattress to alleviate the weight of bed clothes upon a patient. Rigid frame elements inserted under the mattress include a wire core encased in a cylindrical synthetic plastic cover. The bedding support consists of two frame elements each having coaxially aligned end portions bridged by a tubular connector into which the end sections are telescoped. Depressions are formed in the connectors extending into the connector bore whereby frictional engagement is made with the element cover permitting the width of the bedding support to be readily adjusted, and the depressions insuring frictional contact between the frame elements and tube connectors regardless of variable dimensional tolerances.

Abstract: A fluid flow system comprises a plurality of operational elements which are interconnected by rigid conduits. One type of rigid interconnecting conduit includes a statically adjustable assembly including two telescopically associated members having a combined length which is variable to accommodate objects spaced at different distances. The assembly also includes a member for clamping the relatively movable elements to provide a rigid linkage once the interconnection of the objects is made. Another type of rigid interconnecting conduit automatically compensates for distance variations under dynamic operating conditions. This dynamic coupling assembly includes two ball joints and a telescoping assembly which provide for transverse and longitudinal distance adjustments, respectively.

Abstract: In a door closing device for an upper lock a bar structure is provided for interconnecting a shaft of the door upper lock with a door wing. The bar structure includes a main arm and an adjusting arm pivotally connected to the adjusting arm. The adjusting arm is comprised of telescopically displaceable outer and inner bars which can be locked in position by a locking member. The locked position of the bars relative to each other is secured by a slidable tube surrounding the outer bar and securable to the inner bar.

Abstract: A non-rotatable telescoping support structure particularly suited for use in a pole lamp includes an outer elongated tubular member having a bore of cross section the shape of a convex polygon and an inner tubular component having an outer surface with a cross section of shape corresponding to the cross-sectional shape of the outer component bore. The inner component is slidable within the bore of the outer component but relative rotation is prevented by engagement of the corner of the inner component with the inner surface of the outer component adjacent to the corner of the outer component bore. One end of the outer component has external threads on which a split ring assembly is threaded and tightened to deter relative longitudinal movement between the inner component and the outer component.

Abstract: A regulating apparatus for a steering shaft of a steering wheel including an outer shaft rotatably mounted on a casing member, an inner shaft axially slidably mounted within the outer shaft and rotatable for transmitting rotation torque generated by rotation of the steering wheel wherein the steering wheel is mounted on the inner shaft, a locking member axially slidably mounted within the outer shaft and pivotably mounted on the inner shaft for selective engagement with the outer shaft and a control rod operatively connected to the inner shaft and the locking member for rotating the locking member so as to pressingly engage the locking member against the outer shaft.

Abstract: A back support control mechanism for a chair or the like is provided for a back support movable toward and away form a seat. Adjustable positioning of the back support with respect to the seat in an infinite number of positions in a range of movement of the back support is provided through use of a channel member fixed with respect to the seat and a pressure pad positioned within the channel member and fixed with respect to the back support. The pressure pad slides within the channel member, and a lever is coupled to the pressure pad through a spring plate.

Abstract: A fishing rod holder comprising a mounting bracket for attachment to a structural member of a boat, a tubular body member having open ends for receiving a rod handle inserted through one end and having a slot longitudinally disposed in the side thereof, mounting means for mounting the tubular body member on the mounting bracket to provide limited pivotal vertical movement with respect to the mounting bracket, a lever block mounted for limited pivotal movement with respect to the tubular member and carrying therethrough a threaded rod having a handle and a camming head with the camming head and the end of the rod projecting into the body member slot, and a tongue member having a generally semicircular cross-section disposed inside the body member and meeting and fastened at one end to the interior of the body member and covering the slot.

Abstract: First and second tubular pole members are formed of rolled sheet metal material and provided with a lock seam defining a reinforcing rib extending inwardly and longitudinally along each pole member. The second pole member has a smaller external diameter than the internal diameter of the first pole member and is telescopically received within and spaced inwardly of the inwardly extending reinforcing rib of the first pole member. The light-weight construction of the pole members permits easy manipulation of the extension handle and the lock seam reinforcing rib provides sufficient rigidity and strength to prevent lateral bending of the pole members, even when the extension handle is fully extended. A locking device is provided for permitting telescopic adjustment of the length of the extension handle and for maintaining the extension handle in the adjusted position. The locking device includes threadably interconnected first and second tubular members which are molded of plastic for economical reasons.

Abstract: The present invention includes a telescopically extendable pole including a first hollow cylindrical tube and a second cylindrical tube which is telescopically displaceable within the first tube. The arrangement for selectively locking the first and second tubes together at a fixed relative longitudinal position includes a locking member having first and second cylindrical end sections and a cylindrical center section which functions as a first camming surface. A second camming surface surrounds the first camming surface. Relative rotational displacements of the first tube with respect to the second tube causes the first camming surface to engage the second camming surface and the second camming surface to cause engagement with the inner surface of the first tube to lock the first and second tubes into a fixed relative longitudinal position.

Abstract: A lockable telescopic joint is provided wherein two telescopic members may be fixed against telescoping action by tightening a glade nut, and yet after tightening there remains a substantial degree of rotational freedom so that one telescoping member may be rotated relative to the other by hand, and yet the members will not telescopically collapse short of applying considerably more compressive force than need be exerted to rotate the members.

Abstract: The disclosure concerns a device for clamping two axially telescoping rods in a selected telescoped position, wherein the device includes a case supported at the end of the outside one of the two rods and the case encloses an annular bush wrapped around the inside one of the two rods. One side of the bush is open for defining an axial gap. Terminal flanges extend away from the bush at opposite sides of the gap. A shaft extends from the second of the terminal portions, through the first of the terminal portions and then outside the case. A two-position cam is journaled to the shaft and is shaped to engage the exterior of the case. As the cam is moved between its two positions, it selectively draws the terminal portion flanges together or permits them to move apart for selectively clamping or releasing the bush on the rod. A spring normally biases the terminal portion flanges apart.

Abstract: The innermost of two telescoping sub-portions of the steering shaft of an adjustable-length, tiltable steering column is received within the outermost shaft sub-portion, as is a wedge plug which interacts with the innermost sub-portion to wedgingly lock the linkage in adjusted, telescoped position when a threaded actuating rod is turned in one direction. The rod is interlocked with the innermost shaft sub-portion or the wedge plug to prevent relative axial movement between the rod and innermost shaft sub-portion or plug at least when the rod is turned in the other direction.

Abstract: A telescoping steering column is provided of the type wherein a wedge plug and innermost shaft portion are axially wound relatively to each other by rotation of a threaded rotatable control rod to thereby lock and release the innermost shaft portion relative to another shaft portion. First and second stop means are provided to respectively stop the control rod and the one of the two elements (innermost shaft portion or wedge plug) that is not threaded to the threaded control rod against relative axial movement in our direction and in the opposite direction. The first and second stop means allow a limited axial lost motion between the rotatable control rod and the said one element when the direction of the rotatable control rod is reversed so as to axially disengage one of the stop means and move the rod axially toward the other by the stop means.

Abstract: A free standing apparatus is disclosed herein for rollably supporting a reel of spool of cable including a pair of stanchions separated by the reel. Each stanchion is provided with a base supporting an upright post with braces and further includes a slidable, self-locking carriage for rotatably holding an axle on which the reel is carried. A releasable holding device is operably disposed on the carriage to permit selective sliding and locking of the carriage on the post.

Abstract: A bowl mop for use in cleaning toilet bowls and the like including a disposable yarn head having a slide portion slidably received in a slot on a projecting end portion of a handle. The slide is releasably retained within the slot as by engagement of a cam projection on the slide in a recess in the handle end portion to permit the disposable yarn head to be snapped off for easy disposal and replaced with a replacement head. The handle end portion extends at an angle relative to the longitudinal axis of the handle to facilitate cleaning of difficult to reach areas. Also, the handle is adjustable to different lengths for safer, faster cleaning with less bending and stooping and less operator fatigue.

Abstract: A wheeled carriage has an upright column with a laterally projecting and vertically adjustable arm thereon. The projecting end of the arm has a dove-tail connector thereon rotatably adjustable in a horizontal plane; a tubular feed screw support has a mating dove-tail part on its bottom side engageable with the connector. The end of the feed screw support has a second dove-tail connector thereon and rotatably adjustable in a vertical plane. A bracket attachable to the motor of an electric drill has a second mating dove-tail part engageable with the second connector with the shaft of the drill chuck aligned with the axis of the tubular support. Two spaced tubular chucks are mounted on opposite sides of the tubular support to receive and releasably lock anchor cables parallel to the drill. The dove-tail parts mating with the connectors have threaded recesses opening normally to connectors; and slots opening laterally and radially into the recesses.

Abstract: A foldable, portable bicycle in which the handlebar, its elongated post, the seat assembly, the pedal crank and the frame are foldable quickly and easily into a compact and regular-shaped package that is easily portable and storable, and are unfoldable with similar speed and ease into a safe, durable and comfortable bicycle that accommodates adults of normal size. The frame is designed with a low profile that is substantially the same in height and thickness as the dimensions of the wheels and their supports, and the handlebar and seat assemblies extend upwardly to normal height, but fold and collapse, along with the pedals, to substantially within the confines outlined by the folded frame.Quick release latches are provided for the handlebar post, the seat post sections, the frame hinge and the pedal hinges, and the pedal cranks are designed for effective performance and easy, compact folding.

Abstract: A batting tee comprising a base including an upper and lower base member held in substantially parallel spaced relation relative to each other by a first set of spacers disposed therebetween wherein the upper and lower base member each comprises a first and second base element normally disposed in coplanar relation relative to each other, a second set of spacers attached to the lower surface of the lower base member to support the batting tee above the ground, a substantially vertical adjustable tee member including an outer interconnecting element having an upper and lower tee element extending from opposite ends thereof, a flexible ball receiving element is coupled to the upper portion of the upper tee element, a plurality of corresponding apertures comprising a predetermined pattern are formed in the upper and lower base members to selectively receive the lower tee element thereinto vary the ball hitting position relative to the batting tee wherein the predetermined pattern comprises at least two pair of s

Abstract: A musical instrument support having a clamp for releasably coaxially securing an instrument post to a tubular floor support, or the like. The clamp includes a housing secured to the upper end of the tubular support and having an opening receiving a resilient locking body. The locking body is caused to clamp the lower end of the post inserted in a socket portion thereof by selective operation of a camming structure urging leg portions of the locking body against guide surfaces to effect the clamping operation.

Abstract: An internal locking device for telescoping tubular members and method of forming the same. The device includes an inner telescoping member, having an end formed with an annular cam groove of a selected configuration, and a cam element cooperating with said cam groove and outwardly extendable to form a releaseable lock of an outer telescoping tubular member with the inner member when the members are twisted one with the other.

Abstract: A readily assembled and detachable clamp for securing an electrical connector to a base. The clamp has a lower leg which extends horizontally and terminates in a reverse bend extending into an upper leg which from the reverse bend tapers upwardly over the lower leg to a flat portion lying over the lower leg. This portion terminates at the outer end in an upright leg which acts as a stop for the head of a screw which is threaded through a threaded hole in the flat portion of the upper leg and into engagement with the lower leg to clamp the latter to the base as well as to the electrical connector and also the upright leg provides a handle to insert and remove the clamp and align it properly in place.

Abstract: A seatpost assembly is used in combination with a tubular seat mast of a bicycle having a radial hole through an upper rearward wall of the seat mast and includes a cylindrical seatpost sized to telescope within the seat mast and defining a longitudinal slot having side walls forming opposing channels, a lock nut for receiving a bolt and positioned within the slot such that it slidably engages the opposing channels, and a threaded bolt extending through the radial hole and the rearward seat mast wall and into the slot to engage the lock nut. The bolt has a head such that, when the bolt is threaded into the lock nut, a portion of the seatpost and a portion of the seat mast are clamped together between the lock nut and bolt head to prevent movement of the seatpost relative to the seat mast.

Abstract: A longitudinally and angularly adjustable vehicle steering column has two telescopically coupled steering column parts. One part is secured to a vehicle frame for swinging motion about a horizontal axis while the other part carries the steering wheel. The steering column is supported by a two-part strut. One strut part is in engagement with the steering column and the other strut part is secured to the vehicle frame for swinging motion about a horizontal axis. The strut parts are bar-like components articulated to one another. One of the strut parts extends parallel to the steering column axis. A locking bar mounted on only one of the two said steering column parts extends substantially parallel to the column axis and projects into a clamping sleeve mounted on the other of the two steering column parts. The clamping sleeve also receives one of the strut parts. A tightening mechanism cooperates with the clamping sleeve for simultaneously immobilizing the locking bar and the strut part in the clamping sleeve.

Abstract: In a telescopically adjustable support, an axially divided elastic sleeve extends over outer and inner tubes and has projections engaging the inner tube through apertures in the outer tube. The sleeve can be tightened to the inner tube by a coupling nut. The radial length of the projections is larger than the radial spacing between the external tube faces so that additional clamping is brought about by the sleeve at a spacing from the sleeve end adjacent the inner tube, whereby clamping is effected at two spaced and separated areas to achieve a particularly rigid connection of the tubes.

Abstract: There is disclosed in the present application, a retainer for sockets especially useful in connection with socket wrenches and accessories. The retainer, which is added to a male member includes a spring-pressed lever which is depressed as the mating female member or socket is introduced over the lever and then locks into the interior of the socket with a self-energizing form of engagement to resist withdrawal until the spring pressure is overcome to release the lock.

Abstract: A structural support arrangement in which an inner pipe member is telescopically movable within an outer pipe member. The telescopic members have cross-sections of rectangular and/or square pipes. A self-actuated drive roller is held in elongated holes which are inclined to an axis of the support. The drive roller is knurled or has a roughened surface which abuts against the inner pipe member. The inner pipe member, furthermore, is grasped from behind by a roll bearing member which also serves as a back counter bearing for the drive roller. At least one supporting roller may be arranged with divided parts and extend over the width of the inner pipe member. A traverse member on the outer pipe member is movable about a vertical axis and retains a roller holder which extends between the divided portions of the supporting roller.

Abstract: A mounting pin for a pivoted damper blade is disclosed which comprises a cylindrical shaft having a cenrtrally positioned hole extending therethrough, this hole being surrounded on one side of the pin with an upstanding flat seat. This hole is longer than it is wide so that it extends longitudinally of the pin. Also, the pin at one side of the seat is formed to include longitudinal depressions which provide a plurality of circumferentially spaced arc segments which form an interrupted circle. This pin is mounted on a blade at a side margin thereof by means of a bolt extending through a hole in the blade and through the hole in the pin, and a nut is associated with the bolt, the nut locking against the flat seat of the pin. A resilient gasket is interposed between the head of the bolt and the rear face of the blade so that the bolt need not be held while the nut is tightened. Also, a locking washer is desirably interposed between the nut and the seat.

Abstract: A handle bar fixing device for a bicycle, which is used to fix a handle bar to a cylindrical holding portion attached to the utmost end of a lug provided at a handle stem. At the lug is provided a through bore which extends lengthwise of the lug, opens at one end into the holding portion and at the other end onto the stem body, and has a screw thread in part. A control member with two first and second screw threads different in pitch angle and in the direction of screw, is screwed with the through bore by way of the first screw thread. A pusher having a screw member screwable with the second screw thread is supported axially movably only to a first end portion of the through bore opening into the holding portion. The control member is rotated to force the pusher to move lengthwise of the lug so that the handle bar inserted through the holding portion may be fixed thereto.

Abstract: A draft control plate, which automatically opens or closes to provide efficient draft conditions in a furnace, is provided with both horizontal and vertical counterbalance devices which respectively permit adjustment of the initial position of the plate and the sensitivity of its movements. Initially, the plate is partially open where it remains while the furnace is operating under normal conditions. It is then capable of opening or closing in response to changes in the pressure differential across it. Preferably, the plate is horizontally mounted in an auxiliary flue channel which is adjacent to and in connection with the main flue of the furnace.