Abstract: A glove blocking apparatus comprises a heated mandrel which consists of first and second separate glove receiving members. The glove receiving members can be moved between a first adjacent closed position and a second mutually separated position by power means. A glove to be blocked is mounted over the mandrel with the glove receiving members in their adjacent, closed position, and then the glove receiving members move to their separated position to stretch the glove. Stop means are provided to define the second, separate position so as to assist in determining the final size of the glove. There may be one such apparatus for stretching the palm portion of the glove in an endwise direction, and a second such apparatus provided with finger stall receiving formations, for stretching the glove and the finger stalls thereof in the face-to-face direction.

Abstract: A dispenser for a roll of strip comprising a casing in which is disposed a roll of strip. Pivotally connected to the casing is a cover. At the strip exit opening is a passage through which advances the free end of the roll of strip. Disposed in the passage for the advancing free end of the roll of strip is an upwardly extending indexing member. The indexing member is formed with a tip having oppositely sloping sections. The roll of strip is formed with diagonal slits. The diagonal slits are alternately, oppositely directed. The indexing member penetrates each slit successively through the alternately penetrable sections of the top of the indexing member. An operator applying a downward force to the free end of the roll of strip severs the free end thereof successively along each successive slit by means of sharp edges at the base of the indexing member.

Abstract: In order to removably yet reliably assemble the frame parts, endless belt and sprocket of a document tractor, holes are provided in the hub of one of the frame parts which provide a guide platform for the endless belt which has pins engageable with perforations on the document to be metered. Flexible rods in registry with these holes extend from the other frame part. Latches on the outer ends of these rods engage the outsides of the holes when the rods move into latching engagement as the frame parts are brought together. The tractor may be disassembled by manually deflecting the rods to release the latches.

Abstract: A system for mounting a motor driving a motor capstan includes a single flexible metal sheet which includes four bends along four spaced parallel flexure lines. The four flexure lines divide the sheet into five sections, including first and second end sections, first and second leg sections adjacent to the first and second end sections, respectively, and a motor support section disposed between the first and second leg sections. The first and second end sections are attached to a rigid support surface. The first and second leg sections have flanges to provide structural strength. The first and second leg sections are oriented at downward angles from the rigidly mounted surface. The motor support section is approximately parallel to the rigid mounting surface and includes an opening therein for accommodating the motor.

Abstract: The present invention relates to a self-closing propellant charge package adapted for use with a gravity operated loading device of a power-actuated tool. The package comprises a tubular body having one end at least partially closed, the other end being open. A portion of the body adjacent the open end is deformed for holding the charges, it being possible to cancel the deformation of this portion to allow passage for the charges. More specifically, at least one cut-out is provided in the deformable portion, the portion being maintained in a deformed state by a resilient ring or other means.

Abstract: A machine for the attachment of rivets, buttons, or the like, particularly to clothing pieces, with an upper tool and a lower tool and with magazine chambers for upper and lower parts, from which chambers the upper and lower parts, respectively, are brought via feed rails into the region of the working position. The magazine chambers are arranged floor-like one above the other. A single slide is coordinated to both chambers, the slide being moved up and down in front of the rear wall of the chambers. On its front wide face the slide is equipped with stroke and sorting ledges which are inclined downwardly in the direction of one of the side walls. In the upper position the ledges lie flush in alignment with the discharge openings of the magazine chambers - side walls.

Abstract: An electric stapler comprising: a staple bending table; a main arm having a staple push-out blade at the forward edge thereof and supported turnably at the rear edge thereof; a sub-arm turnably supported by said main arm at a position other than the support point for rotation of said main arm; and a drive mechanism connected turnably to said sub-arm at a position more forward with respect to the support point of said sub-arm and imparting a rotary force in one direction to said sub-arm.

Abstract: An improved soldering device is provided, one that is structured for the reception of and use with a new cartridge that is a self-contained supply of solder. When the cartridge is inserted within the soldering device, an operator, using only one hand, is able to advance the solder from out of the cartridge and to a location in close proximity with the soldering tip of the device. With that same single hand, the operator can energize the heating element to supply heat to the soldering tip. The advancing and energizing structure permits the device to remain energized throughout the advancing operation or, optionally, to smoothly effect an intermittent energization and deenergization of the heating element to reduce the total quantity of heat supplied to the soldering tip even while the solder is being advanced.

Abstract: A blank is provided for a cup-shaped container to be fabricated of cardboard or the like. The container is of a type comprising substantially rectangular sides which extend upwardly from a bottom and which include rounded corners of the upper edge thereof and an edge flange which projects obliquely downwardly at an angle along the sides. The blank is formed as an integral unit comprising outwardly extending sides which are intergral with a bottom portion and which include a portion that is at least partially bowed when the blank is formed into the container and forms part of the edge flange of the formed container. The edge flange itself comprises an edge flange strip and a reinforcing strip defined by a pair of fold lines in the sides of the blank.

Abstract: Container having a tubular main body consisting of a plurality of rectangular panels hinged together to give a polygonal cross-section, which body can be collapsed to a flat condition.

Abstract: An attendant-controlled terminal, operating under the control of a conventional microprocessor, monitors and controls remote fuel pumping units, combines fuel sale information with information concerning additional sales keyboarded by the attendant, accepts customer account information recorded on a credit card, verifies that the identified account is in good standing, and prints a credit card receipt for signature by the customer, the receipt being printed in an optically-readable format compatible with conventional automated invoice processing equipment.

Abstract: A mixed air conditioning controller is formed as a factory assembled and adjusted unit in a compact housing, with simple and direct input/output field connectors. Various temperature and humidity input devices are field connected to produce a sequenced control of the air dampers and mechanical cooling and heating devices, as well as auxiliary devices. The controller includes a primary input related to room demand, an outside air temperature input, with an interlocked control to the damper, a fan status input, a minimum air supply control and a by-pass switch having a low limit input. The logic network connecting the input/output includes pneumatic switching, pressure selecting and comparing devices of a diaphragm-controlled-orifice construction connected to function as fluidic repeaters, pressure regulating valves and pressure isolating and switching devices. The controller includes a conditioning channel and a damper channel.

Abstract: A temperature control system for monitoring and controlling a zone supplied with low-pressure steam is disclosed. The system utilizes a series of balanced Wheatstone bridges to provide a variety of automatic and manual control techniques to maintain temperature in the zone. Means are also provided to obtain direct readings of temperature, rate at which heat is being supplied, and the position and movement of a steam control valve which is utilized as a heat metering apparatus. The bridge leg outputs are permanently connected by high impedance coupling circuits which act as voltage dividers to obtain the required resultant control signals. High impedance coupling eliminates the need for control circuit balancing, thereby minimizing required calibrations in actual field use. The sole balancing calibration is with each sensor leg to a centered bridge leg.

Abstract: An adjustable snow making tower wherein the placement of manufactured snow on ski slopes may be regulated. The tower comprises a support pole having the bottom end anchored in the ground and an elongated conduit having air and water supply lines connected to the bottom thereof and air and water discharge nozzle means at the top thereof which is provided to make snow in freezing ambient temperatures. The bottom of this conduit is pivotally connected to the support pole adjacent to the bottom thereof for pivoting the conduit in a vertical plane for adjustment of snow placement on the ground surface. A slide guide is secured to the support pole adjacent the top end and is slidably engageable with the conduit to guide the pivotal movements thereof and limit the extremes of pivotal movement thereof for proper placement of manufactured snow on the ski slope, particularly in response to wind conditions.

Abstract: Plasma spraying apparatus is provided with means for selective release of carrier gas for the coating powder prior to the injection of the powder into the plasma stream. The gas release is effected by one or two apertured tube wall portions associated with a closure sleeve slidable on the tube or by a swirl chamber with a lateral gas outlet provided with a filter and a regulating valve.

Abstract: A low volume spray device for irrigation systems has a lower tubular end portion that is beveled to facilitate its insertion into a plastic conduit. Its upper end forms a nozzle portion with a small orifice and a deflector that controls the spray pattern. The device is preferably molded from plastic material so as to be inexpensive yet long lasting.

Abstract: In an irrigation hose which is produced by melt-sticking double thermoplastic resin film in a plane along longitudinal parallel lines so as to form 2 to 3 passages, one a supply passage and others being constant pressure passages, the supply passage being connected to each constant pressure passage by communicating holes which are formed by non-melt-stuck portions spaced in the melt-stuck line between both passages, and the constant pressure passage having water-irrigating holes which are formed by non-melt-stuck portions spaced in an outside melt-stuck line thereof, the improvement which comprises making small melt-stuck portions in the vicinity of the communicating holes and/or water-irrigating holes.

Abstract: A liquid spray jet assembly is disclosed destined particularly for use in dust and debris laden conditions such as on the cutting heads of mineral mining machines. The assembly comprises a housing for securing to a piece of apparatus, a jet which is a push fit into the interior of the housing and a resilient seating between the jet and a part of the housing. The seating is made from a compressible material and is so compressed by the jet when positioned in the housing that the restoring force causes part of the jet to bear against a surface of the housing facing towards the seating so holding the jet within the housing. The housing and the jet have communicating passages for the passage of liquid therethrough. Use of a push fit avoids the previously used screw threaded communications and makes jet replacement an extremely simple operation.

Abstract: Apparatus for building up and repairing a refractory lining of an industrial oven or like hot-running vessel comprises a disc rotatable in a horizontal plane in either direction for centrifugally depositing a granular refractory material on a portion of the lining to be built up or repaired, a conduit having an outlet opening above the disc for feeding the granular material thereto, and a drive shaft for the disc and for mixing and conveying elements for the granular material in the conduit, these elements being capable of conveying the granular material to the rotatable disc in either one of the selected directions of rotation of the disc.

Abstract: A method for recovering plastics which is easy in working and effective in separation of materials. The method comprises the steps of: heating multilayer plastic articles, immediately crushing the heated plastic articles by means of shearing, impact or tearing force and peeling the layers of the plastic articles into small pieces of respective component layer materials, and separating the crushed and peeled pieces of materials into the respective component layer materials, thereby recovering the component layer materials in separated state.

Abstract: Process and apparatus are provided for disintegrating waste paper containing metallic and similar particulate material appreciably heavier than the paper, and separating the heavier material from an aqueous slurry of disintegrated paper fibers and particles by centrifugal force and gravity settling, comprising disintegrating waste paper in the presence of water while imparting a vortical flow to the resulting slurry of a velocity sufficient to throw relatively heavy particulate material towards the outer periphery of the resulting vortex while lighter waste paper fibers and particles move towards the inner periphery of the vortex; establishing a relatively quiescent zone below the outer periphery of the vortex; permitting the heavier particulate material in that zone to settle out and collect; and withdrawing a slurry of waste paper fibers and particles from an inner peripheral portion of the vortex relatively free from heavier particulate material.

Abstract: A beater mill comprising a cylindrical housing which accomodates a rotor carrying at least two arcuately spaced groups of beaters, the beaters from group to group being axially offset, the cylindrical jacket of the housing being formed as a peripheral sectional screen, an axial inlet for material to be milled being provided adjacent the rotor axis, the rotor arms being formed as fan blades and the said inlet including a distributor means for the air and material taken in through the inlet.

Abstract: In a food processor with a power base and lid-covered bowl, a cutting disc is rotated by a shaft extending into and terminating in the bowl, and structure is provided to reverse the shaft rotation on selection. In this general arrangement, an improvement is provided in the cutting disc comprising a first cutting member on the disc surface facing in the direction of the selected shaft rotation and a second cutting member is provided on the same disc surface facing opposite the first cutting member with the cutting members being substantially diametrically opposite for dynamic balance. The cutting members are preferably on different levels on the disc surface with slanted ramps connecting the levels. The arrangement is such that one of the cutting members performs a cutting operation when the disc is rotated in one direction while the other member is rendered inoperative and, on shaft reversal, the other member performs the cutting operation while the one member becomes inoperative.

Abstract: A pair of cooperable rotatable discs of differing shape are supported in a housing for crushing hard and/or abrasive materials. A first one of the discs is planar in shape and is horizontally supported for rotation about a vertical axis. The cooperating disc is of conical shape, and is movable toward and away from the first disc along a second oblique axis, and is also supported for rotation in the housing about such oblique axis. Material to be crushed is deposited on the horizontal surface of the first disc, and after being crushed between the discs is carried by the first disc to be swept into the bottom of the crusher housing by means of a first rake or comb located above the upper material-bearing surface of the first disc. A second rake affixed to the lower surface of the first disc aids in discharging the crushed material from the bottom of the housing through an outlet chute.

Abstract: Method and apparatus for controlling the refining of fibrous lignocellulose pulp material in which the pulp stock or grist is conveyed into a cylindrical stationary drum and propelled therein in a linear direction in a pulsating fashion by a co-axial rotor comprising a plurality of impellers which attack the grist in a wedging action as it is compacted by the centrifugal force of rotation and pushed ahead of the leading edges of the impellers and thus inducing in the grist internal frictional shear forces while it is forced through a gap defined between the terminal edges of the impellers and a series of shear members arranged axially along the interior surface of the drum. The impellers are detachably and adjustably anchored in slots in the peripheral wall of the drum to vary the gap clearance.

Abstract: The winding forms of a 2-pole stator winder located most remotely from the wire sources are encompassed within a wire control device that restricts outward ballooning of the wires from the winding head. The wire control device is movable to a position remote from the winding forms to permit removal of the winding forms from the winding area.

Abstract: A recoiler for use in a slitting line upon which multiple strands of slit material are wound. The recoiler includes a rotatable drum having expandable side walls which are shiftable between expanded and retracted positions during drum rotation.

Abstract: Winding device for metal strips, in which the metal strip is braked between two rollers which are pressed against one another. One of the rollers has a larger angle of wrap for the metal strip of at least 75.degree. and the other roller has a smaller angle of wrap for the metal strip of 45.degree. at maximum. The one roller with the larger wrap includes material on its periphery having a coefficient of friction for the material which is at least 20% lower relative to the braked metal strip than the coefficient of friction of the peripheral material of the other roller with the smaller amount of wrap.

Abstract: A brake control system for an unwinder is provided which measures the line speed of the moving web and the rpm of the roll and produces electrical output signals proportional to each which signals are operated upon to produce a main brake control signal to apply a braking force proportional to the roll diameter as it is constantly decreasing, and a further output signal which is proportional to the energy in the roll so that additional braking force modification will occur during acceleration and deceleration of the web in order to maintain essentially constant web tension. An additional feedback from a web tension measuring device is also provided which adjusts the braking force to produce an actual tension equal to the desired tension which has been included in the main braking force output signal proportional to the roll diameter.

Abstract: A wing mounted retractable aircraft undercarriage with a trailing wheel or wheels comprising a rigid leg casing, pivotally mounted on the wing about a retraction axis, a rocking lever pivoted on the leg casing, supporting the wheel or wheels and mounting the lower pivot connection of a shock absorber located behind the leg casing, an upper pivot connection of the shock absorber to a lever, which lever is pivotable on the leg casing about an articulation axis which is distinct from the retraction axis, a rod of fixed length pivoted at one end to the lever and at the other end to a fixed position on the wing, so that upon retraction of the undercarriage by the action of a retraction jack, the rod causes rotation of the lever with respect to the leg casing, which rotation, by traction of the expanded shock absorber causes pivoting, with respect to the leg casing, of the rocking lever mounting the wheel or wheels towards the retraction axis, and thus an overall shortening of the undercarriage.

Abstract: A plug type door for a pressurizable aircraft fuselage is mounted by a door hinge assembly for swinging movement into and out of a door opening in the fuselage. The door is composed of three segments that are hinged to each other so that the door can be folded from a fully closed position in which the three segments are serially arranged to completely cover the door opening, into an unplugged position in which the three segments are oriented in a generally Z-shaped configuration. Stop members are mounted on the fuselage adjacent the door opening and cooperate with corresponding stop members on the door to plug or secure the door in the door opening when the door is in a closed position. The stop members on the door and the door opening deregister as the door is folded to free the door for outward swinging movement about the hinge assembly.

Abstract: A support system which enables a rain gutter to be inverted and emptied of debris includes a link pivoted at its rear end to a bracket attached to a building, and at its front end to the gutter. The gutter can pivot about the front end of the link to an inverted position. In its normal position the gutter rests on support arms extending outwardly from the building underneath the gutter. The support system is usable with all commercially available gutters.

Abstract: A support rack adapted for suspending a flexible plastic bag having diametrically opposed handles in an open condition while simultaneously buttressing the bag to facilitate the loading of articles therein comprises a skeletal, open frame including back support means and confronting side support means for receiving a bag to be supported. The back and side support means are arranged to define a confinement boundary for the back and side panels of the bag and have dimensions generally corresponding to the height and width dimensions of the bag when opened. The rack further comprises bag suspending means carried by each side support means arranged to receive the bag handles for maintaining the bag in a suspended, opened condition. A rack mounting means projects rearwardly from the back support means and has pendant coupling means for mounting the rack along the top edge of a horizontally disposed support member.

Abstract: The tripod (10) comprises an equipment support (12), three legs (14, 16) pivotally secured to the support, a center post (22) extending from the support and between the legs, and three stabilizer links (28) secured respectively between the legs and the center post. Gross adjustment is first made for each leg by adjusting the position of the end of its stabilizer link with respect to the leg. Thereafter, fine adjustments are made by rotating a turnbuckle (44) in the stabilizer link which lengthens or shortens the link to change the geometry of the triangle formed by the leg, the center post, and the stabilizer link. A slider bearing (54) is attached between each of the legs and its respective foot pad (56). Since the foot pads have previously been firmly set into the ground, when the geometry change occurs, the slider bearing permits relative sliding between the leg and the foot pad without causing physical movement of the foot pad.

Abstract: A leg is coupled to one half of the connecting structure, e.g. a detachable seat, via screw engagement and the latter is coupled, via wedge engagement to be established by projections formed thereon, to the other half of the connecting structure, e.g. a fixed seat, mounted to the bottom of a massive body such as a keyboard musical instrument, a larger sized television set and a heavy table. Registration of the leg at the correct position and the above-described wedge engagement are carried out simply by sliding the one seat against the other seat with alleviated trouble in the collimation work, reduced damage on the thread construction and stabilized support for the massive body.

Abstract: A reading stand for use in the bathtub on which is mounted a transparent waterproof container that holds the reading material and which has clips that are used to turn the pages without wetting them.

Abstract: The one-piece easel-support member comprises attachment means for attachment to the back of a picture frame, a stand hingedly connected to the attachment means, a flap, and a link hingedly interconnected to the attachment means and to the flap. The easel-support member also comprises latching structure which includes one latching element on the flap and two latching elements on the stand. The latching element on the flap is engageable with one of the elements on the stand to place the easel-support member in its storage position. The flap latching element is also engageable with the other latching element on the stand to place the easel-support member in its use position.

Abstract: A security nut and hook assembly compatible with pipe-type car top carriers in order to prevent inadvertent and unauthorized removal of a payload from such a carrier includes a hook-forming element arranged for engaging a rail of the car top carrier. A clamp engages with the hook-forming member for securing a payload to the rail of the carrier, with a retainer attachable to the hook-forming member and the clamp for biasing the clamp against the rail of the carrier while simultaneously retaining the entire assembly on the carrier rail.

Abstract: A vibration-absorbing mount with hydraulic damping, especially for mounting an internal-combustion engine upon a vehicle chassis, comprises a housing subdivided internally by an elastic wall which is connected with the force-transmitting member of the mount and is formed with an orifice enabling fluid to pass between the two chambers. For small pressure differentials, the pressure equalization between the two chambers is effected substantially by transfer of fluid through the orifice while large pressure differentials, representing high frequency oscillations, are damped primarily by deformation of the movable wall.

Abstract: A blow mold for producing bottles or similar hollow containers from parisons of synthetic plastic material comprises two mirror-symmetrically arranged blow mold halves movable toward and away from each other between a closed and an open position. Each of the mold halves includes an outer mold part and an inner mold part guided for independent movement relative to the outer mold part in an endless inner face of the latter, the inner mold part having a concave end face which forms together with an adjacent portion of said inner face of the corresponding outer mold part in the closed position of the mold half of the mold cavity for forming a bottle. Each of the concave end faces of the inner mold part may also be provided with an island-shaped sharp edged projection aligned with and engaging in the closed position of the mold a corresponding projection on the inner mold part of the other mold half for forming a grip opening in the bottle.

Abstract: A valve arrangement having a housing with an inlet for pressurized fluid and an outlet. A chamber is provided in the housing having a flexible diaphragm therein dividing the chamber into a control chamber and a pressure chamber. The pressure chamber and the control chamber are each connected in fluid circuit with the pressurized fluid supplied to the inlet through a constant cross section throttle opening. An analogue pressure regulator is provided for maintaining the pressure of the pressurized fluid in the control chamber constant independent of pressure variations in the pressure of the pressurized fluid. The analogue pressure regulator includes a control opening providing fluid communication from the control chamber to the outlet and a pivotally supported armature movable into and out of blocking relation with the control opening.

Abstract: A portable add-on actuator module for use with a wireline cutting surface safety valve to provide supplemental energy for closing and simultaneously cutting a wireline extending through the surface safety valve in the event of an emergency. The unit includes a spring loaded locking collet assembly arranged to engage a locking recess within the stem of a surface safety valve so that the spring force may be added to normal valve closing forces such as line pressure and valve stem springs to supplement such forces for insuring the cutting by the surface valve member of a wireline extending through the member. The actuator module has a body which rests on the safety valve body without the use of any connecting structure. The module also includes structure for hydraulically compressing the spring for connecting the module on a safety valve and for hydraulically shifting the latching collet assembly to a disengaging condition for releasing the module from a safety valve.

Abstract: A valve having a plunger with opposite end sections of equal diameter, a control section of lesser diameter and a valve member. One end section extends from the inlet chamber through a seal to the exterior of the valve, and the other end section extends from the outlet chamber through a seal to the exterior of the valve. The inlet and outlet chambers are connected by a central bore having a diameter equal to that of the plunger end sections. The central section of the plunger extends through the central bore. The valve member seats against one end of the central bore to close the valve. Because of the equal diameters of the axial bores of the end sections and the central bore, the force exerted on the plunger by fluid pressure in the valve are balanced regardless of the plunger position, i.e., open, closed, or at any intermediate position.

Abstract: A battens system for raising and lowering sceneries or other loads on a stage is disclosed. The system comprises a support, a roller upon which at least one cable supporting a scenery is wound, a bearing assembly secured to the support for rotatably mounting the roller and including inclined bearings for longitudinally moving such roller at each turn by a distance equal to the pitch of the cable wound on or unwound from the roller, and a drive for rotating such roller.

Abstract: A portable winch having a drum and ratchet wheel mounted upon a frame for rotation about an axis, and a hand lever pivoted upon the frame for rotation about the axis. A tension-transmitting cable is wound upon the drum, and a releasable stop pawl is pivotally mounted upon the frame and engages the ratchet wheel for permitting unidirectional rotation of the drum. A ratchet dog is pivoted upon the hand lever for movement between an operative position engageable with the ratchet wheel and an inoperative position clearing the rachet wheel during pivoting of the hand lever about the axis. A coil spring is fixed to the hand lever and extends transversely of the dog projection, the coil spring selectively engaging one side of the dog projection for biasing the ratchet dog into the operative position, and selectively engaging the opposite side of the dog projection for biasing the ratchet dog into the inoperative position.

Abstract: A workbench has a pair of rigid wooden work plates bridging and fixed to a pair of transverse support elements from which extend legs constituting a foldable stand. The work plates are each formed with a plurality of throughgoing bores into which pegs of a clamp and holding blocks may fit, these pegs being smaller than the bores so that the blocks and clamp tip when acted upon parallel to the work surface. The faces of the blocks and clamp are inclined to be perpendicular to the work surface when the pegs are thus tipped. The legs of the stand can fold parallel to each other and flat against the work table when the workbench is not in use.

Abstract: An exercising apparatus is similar in its mode of action to a trampoline, and uses a flexible semi-rigid and elongated sheet which may be made of plastic or metal. A frictional pad is provided to avoid slipping as the user bounces on the apparatus. The flexible sheet may be supported at both ends either by a structure which is secured to both ends of the elongated flexible sheet, or by supports upon which it rests. In order to accommodate both heavy and light persons, and persons who want more vigorous bouncing action than those who desire less bounce, the apparatus is provided with various arrangements for increasing or decreasing the deflection versus force characteristic. In one species of the invention the underside of the elongated flexible sheet is provided with a number of grooves for selectively engaging the underlying support either closer or farther away from the end of the sheet.

Abstract: At the time of a twist or a bone fracture of the ankle it is necessary after the plastering to reeducate the ankle motions. In the present invention, a footrest is fastened on a base and may pivot on the base by means of a ball-and-socket joint. Various settings allow this pivoting to be progressive and measured so that the patient or the doctor may follow the reeducation progress, day by day.

Abstract: A gymnastics and game apparatus formed of a plurality of large-scale structural members made of a plastic material in a box-shaped elongate configuration having patterns of recesses in the form of mortise openings and grooves in at least two opposite longitudinal lateral walls, and plug connectors for interconnecting structural members or attaching various elements such as bars, rods or the like to the structural members, the plug connectors having a configuration mating the mortises and grooves on the structural members.

Abstract: An improved exercising apparatus specifically designed to permit, in a single compact unit, barbell type, lifting exercises as well as pull type, muscle toning exercises. Incrementally selectable, vertically movable weights are raised and lowered either by the exertion of vertical straight line forces on a vertically adjustable body engaging means removably connected to a vertically movable carriage which is directly coupled with the weights, or alternatively by the exertion of pull type forces on a second body engaging means coupled with the weights through a system of pulleys which reduces the amount of force required to raise the weights by a predetermined amount.