Abstract: A tubing connector for connecting lengths of round or square tubing includes a base block with an integrally molded connecting arm. Additional connecting arms are connected to the base block by screws which extend through a hollow bore in the connecting arm and an aperture in an end face of the connecting arm. The screws are threadably received in the base block.

Abstract: This mast and boom carrier combination consists primarily of a bow member and a stern member, having a multiple number of openings, for receiving different sizes of masts and booms, and it is designed for wheeled carrier use in transporting a sailing vessel.

Abstract: A multiple link transmission chain composed of interconnected identical links, having identical ends which are angularly disposed with respect to each other by 90 degrees in relation to the longitudinal axis.

Abstract: An indestructible handle for a mop or broom or the like comprises a tubular steel handle member with a solid steel plug mounted in the end thereof and protruding out of the end. The exterior of the steel plug is provided with a modified Acme thread that fits a standard thread on a push broom. The outer end of the steel plug includes a threaded opening such that it can fit on a threaded handle attachment stud on a mop frame. A plastic sleeve encases the handle member. The steel plug is mounted in the end of the handle member by crimping the handle member over the portion of the plug extending into the handle member at three equally spaced points around the handle. The threads on the plug extend into the handle, and crimping tools having a plurality of pointed projections thereon at each of the three crimping positions crimp the tubular member so that the tube is crimped inwardly between the threads of the plug, thus holding the plug in the end of the tubular member.

Abstract: A fire detector comprising a socket and a detector head with an electric circuit therein. The socket is provided with couplings for voluntarily defining the structure of an engaging portion thereof to designate a detector head to be coupled and each engaging portion of the detector heads have a specific structure to engage with the engaging portion defined by the couplings. Hence, no detector head other than the designated detector head can be coupled to the socket plate.

Abstract: A hand and guard rail system has a clamp member made up of two identical elements which have semi-circular sectional portions at right angles to one another. The elements co-operate in clamping so that each portion forms a tubular portion to locate a pair of tubular rail members at right angles to each other.

Abstract: An anchor drive coupler for use in interconnecting an earth anchor with the drive mechanism used for embedding the anchor deeply into the ground, the coupler includes a sleeve, having upper and lower closure plates rigidly secured therewith, and an adapter connects with the upper plate for securement of the coupler with the drive mechanism, while the upper portion of the earth anchor is pinned to the said sleeve or a lower adapter secured therewith, for furnishing interconnection between the drive mechanism and the earth anchor so that driving torque will be transmitted for effecting a deep penetration of the anchor into the ground during its installation.

Abstract: The invention relates to a fixing device for securing any part to a holding member. The fixing device comprises spreadable means in a hole or bore formed in the holding member on the one hand, and on the other hand spreading means. An actuating means is provided to drive the spreading means into the spreadable means so that depending on the length of penetration of the spreading means thereinto the fixing device can be blocked on the holding member and accommodates any thickness variations of said holding member. The invention is used to secure by means of a screw or rivet any part on a holding member such as a panel.

Abstract: A pushbutton tuner wherein a core slide for causing cores to move in-and-out of coils, respectively, has a rack formed at one end thereof and a fine tuning operating mechanism mounted on an auxiliary mechanism baseplate has a pinion meshable with the rack, which tuner is characterized in that the core slide has, at another end thereof, an extended portion formed with another rack symmetrical with the aforesaid rack so as to allow the fine tuning operating mechanism to be mounted on either end of the core slide.

Abstract: A head band has two ball and socket joints spaced apart by a distance approximately equal to the human interocular distance, said joints including balls each of which is bored non-circularly to receive a retaining rod arranged to be passed selectively through and axially adjustable in the bore in one of said balls, said retaining rod being provided with a clamping device at its free end for receiving and clamping an endoscope.

Abstract: The present invention provides a latch assembly carriable on a tubing string extendible into a subterranean well, the latch assembly being selectively engageable between upper and lower sections of the tubing string. The latch assembly comprises an outer housing and an inner body, with latching means carried on one of the housing and the body for selectively securing the latch apparatus to the lower section. Latch engaging means are carried on the other of the housing and the body and the lower tubing section for selective co-engagement between the latching means, the lower tubing section, and one of the housing and the body. Piston means are on one of the housing and the body and have a piston head with first and second piston chambers between the piston head.

Abstract: A dual ball towing hitch utilizes a first ball member having a first base support portion and a second ball member having a second base support portion which are connected to each other and a vehicle towbar by a common stud engaging each ball member through its support portion. The stud passes through a hole in the towbar whereby the base support portion of each ball member frictionally engages the towbar on opposite sides thereof. A hole in each ball member is adapted to receive a torque wrench and a counter-torque bar, respectively, to tighten the ball members to a predetermined frictional torque.

Abstract: A cycle seat clamp for selectively securing a cycle seat having a saddle and a truss to support posts having differing sizes is comprised of a first receptacle for receiving a support post of one size, a second receptacle connected to the first receptacle for receiving a support post of a second size, and a compression member for compressing one of the receptacles against a received support post to secure the cycle seat thereon. Also disclosed is a cycle seat comprising a clamp of the foregoing type.

Abstract: A mechanic's lifting device comprising a circular ring-shaped supporting member having an annular load-bearing wall dimensioned for engagement by a lifting hook or the like. A plurality of threaded studs are mounted on and extend radially outward from the wall for threading into an object to be lifted. The studs are positioned in circumferentially spaced relation on the wall. There are a plurality of hook engageable areas disposed in diametrically opposed relation to the studs with one such area diametrically opposed to each of the studs.

Abstract: A structural element of an assembly kit is proposed which is connectable with at least two further structural elements by respective differently dimensioned connecting elements each of which is associated with one of the further structural elements. The first-mentioned structural element has a body part having at least one undercut groove including two different undercut portions. One of the undercut portions of the undercut groove of the first-mentioned structural element is adapted to receive a section of the connecting element associated with one of the further structural elements, whereas the other different undercut portion of the groove of the first-mentioned structural element is adapted to receive a section of the connecting element associated with the other of the further structural elements. The portions of the groove of the first-mentioned structural elements may have a transverse dimension increasing in the direction towards an interior of this structural element.

Abstract: A fine adjusting mechanism for a number of individual filling units of a high-speed filling machine, operated in tandem from a common drive, which provides an adjustable lost motion between a common drive bar and the pivotal connection with the piston rod of a respective filling unit; the lost motion is adjustable by screwing an adjusting member more or less into the path of the sliding movements of a bearing member sliding in an elongated slot of a swivel member.

Abstract: A modular toy building assembly having a plurality of polygonal substantially plate like panel members and a plurality of connecting members is disclosed for forming subjectively determined toy structures. The polygonal panel members can include triangular, rectangular, hexagonal and octagonal members and are provided with a pair of apertures substantially adjacent to each of their side edges. The connecting members can incorporate a living hinge which is capable of a large number of repetitive flexing motions and which divides the connecting member into two portions. A pair of mounting posts which are complimentary to the pairs of apertures in the polygonal panel members, are located on each portion. Dependant on the relative positioning of the connecting members with respect to the panel members, the mounting posts can be press fitted into the apertures and the panel members can be optionally interconnected in a rigid planar or variable angular configuration.

Abstract: An adapter for attaching a radiator cooling fan to a water pump of an internal combustion engine, the adapter having spaced rear and front walls for attachment to the water pump and fan respectively with recesses extending radially into the body of the adapter between these walls for reception of a wrench used in securing the rear wall to the pump, and with these recesses being separated by radial projections securing the front and rear walls together, and with additional openings being provided in the front wall for passing a wrench rearwardly through that wall when necessary.

Abstract: A rollbar safety frame for an agricultural or industrial tractor comprises two uprights joined at their upper ends by a cross-member, and is adjustable so that it may fit different types of tractor. The frame is adjustable at its upper end, its lower end, or both. For adjustment at the upper end, the cross member is securable between the uprights such that the distance therebetween is adjustable. For adjustment at the lower end, each upright carries a securing plate provided with means for adjusting the relative positions of securing bolts transversely of an axle about which the uprights are secured. The safety frame may, if desired, be hinged at a central portion such that, when secured to a tractor, it may be folded.

Abstract: A shaft adapter for a fan motor, and the like, has an elongated configuration with a shaft receiving socket provided in at least one end of the adapter. By cutting away at least a portion of the end of the adapter provided with the socket so as to form a flat portion communicating with the socket and form a flat portion defining a slot, the shaft adapter can be employed with shafts and fan blade hubs provided with flats, set screws, keys, and the like.

Abstract: A bicycle sprocket wheel comprises a toothed outer annular member molded of a tough nylon plastic and a centrally disposed metal spider having a plurality of radial arms attached to the sides of the annular member to add structural rigidity thereto. The teeth of the annular member are formed with straight front and back faces and with sharp corners at the roots thereof. Such a construction reduces the cost of the mold used for molding the annular member since the cavity needed therein for the teeth can be simply machined by use of straight and circular cuts. The inner radial edge of the annular member is shaped by an insert in the mold to form sets of circumferentially spaced arcs, the arcs of each set having a common radius different from the other sets to accomodate spiders having arms of different radial lengths.

Abstract: A coil is wound on a hollow plastic bobbin and mounted in a U-shaped ferromagnetic frame, there being a pair of aligned bosses on opposite sides of the bobbin bore at one end thereof fitting into cooperating slots in the frame. A ferromagnetic core is axially movable within the hollow bobbin and is urged away from the bottom of the frame by a leaf spring. A compact plastic housing covers the bobbin, coil, and the upper portion of the frame, and electric terminals, mounted in pockets at the top of the bobbin, project through slots in the housing to the exterior. Portions of the bobbin are extruded into openings in the base of the terminals to hold them in place, and a pair of tabs on the bobbin interact with slots in the housing, and posts on the inside corners of the housing form abutments to prevent over-insertion of the tabs in the slots. A hook on the bottom of the frame is shaped to be engageable with an opening in external support elements of differing thickness to facilitate installation.

Abstract: The present invention provides a convertible connector for coupling a plurality of elongated members having open or socket-like ends which may be either circular or polygonal in transverse, internal cross section. In a preferred embodiment of this invention, the connector includes a base portion from which at least two integrally formed legs extend. The end of each leg adjacent the base is of a transverse cross section that may receive a member having either a circular or a polygonally shaped transverse, internal cross section. The end portion of each leg spaced from the base portion has a polygonal transverse cross section that is integral to the remainder of each leg by means of a severable or frangible neck. Thus, when members having a circular open or socket-like end are to be mounted on the connector, the polygonal ends of the legs are broken off.

Abstract: The disclosure relates to a connector joint that consists of separable elements that may be either locked in axial alignment or permitted to pivot relative to each other. The preferred embodiment disclosed utilizes a tubular receiving sleeve with a radius flared socket as one element and tubular pin carrying housing having a partially spherical head of a size corresponding to that of the sleeve.

Abstract: An adaptor capable of being mounted to the drive hubs of a vehicle to allow the vehicle to roll freely without rotation of the drive hubs or drive train. The adaptor includes an adaptor spindle which can be directly mounted to the drive hub using the wheel studs. A free-wheeling hub is mounted onto the adaptor spindle and includes a stud flange and studs providing an identical attachment pattern to that of the drive hub. The wheel of the vehicle may therefore be mounted on the free-wheeling hub such that the vehicle may be towed without injury to the drive line.

Abstract: A power tool driven by a vehicle wheel hub characterized by a removable mounting means which comprises a plurality of lug extenders adapted for removal attachment to the existing lugs which normally retain the wheel on the vehicle. The lug extenders are arranged to utilize various existing lug bolt nuts such that they are universally adaptable to various models of vehicle sizes and configurations.

Abstract: The present invention provides a convertible connector for coupling a plurality of elongated members having open or socket-like ends which may be either circular or polygonal in transverse, internal cross section. In a preferred embodiment of this invention, the connector includes a base portion from which at least two integrally formed legs extend. The end of each leg adjacent the base is of a transverse cross section that may receive a member having either a circular or a polygonally shaped transverse, internal cross section. The end portion of each leg spaced from the base portion has a polygonal transverse cross section that is integral to the remainder of each leg by means of a severable or frangible neck. Thus, when members having a circular open or socket-like end are to be mounted on the connector, the polygonal ends of the legs are broken off.

Abstract: An agricultural tractor as a rearwardly extending drawbar and a rearward PTO output shaft connectible to an input drive shaft on a trailing PTO driven implement through a telescoping drive assembly, which includes front and rear universal joints. The drawbar is connected to the implement tongue through a hitch adapter which provides articulation between the tractor and the implement about a vertical axis that is equidistant from the two universal joints, so that the universal joints articulate at equal angles when the tractor is turned relative to the implement. The hitch adapter includes a housing having top and bottom walls, a vertical pin being insertable into vertically aligned bores in the top and bottom walls and into a vertical bore in the drawbar to connect the hitch adapter to the drawbar, the adapter having a vertical pivot element rearwardly of the pin for pivotal connection to the forward end of the implement tongue.

Abstract: A pipe coupler has a pair of gripping members with corresponding angularly displaced channels and planar webs. The gripping members are adapted to clasp the pipes between corresponding channels with the gripping members in a spaced apart relationship. Means are also provided for cooperation with the webs to draw the gripping members into closer spaced apart relationship so as to rigidly secure the pipes in the channels.

Abstract: An arbor is provided for use with different size power tool chuck jaws and has a main body section of enlarged cross section relative to a shank of the arbor. The shank and main body section have a plurality of grooves therein with each groove longitudinally extending the length of the shank and into the adjoining main body section to define a continuous chuck jaw engaging surface which in the main body section of the arbor is of enlarged circumferential dimension relative to that of the shank drive surface for engaging different size chuck jaws in non-slipping positive driving relation.

Abstract: A secondary handhole is placed in a small excavation in the ground to a depth where its cover is at ground level. It is a comparatively lightweight, portable, substantially strong and essentially unitary structure, which is shipped ready for installation at an excavation site. It provides a protective housing for secondary cable connections of underground electrical utlities and assures their prompt location by observing its ground surface level cover. The secondary handhole, in one embodiment made of fiberglass, has a three-sided rectangular body, with two sides being spaced by a reinforcing cross member extending across the bottom. There are vertical notches in the body at its open end, which extend from the top to a point just below the midline of the body to receive a removable gate extending between the two sides at an elevation higher than the location of the reinforcing cross member.