Abstract: A roll rearranging apparatus is so constructed that an upper roll unit of a tension leveler can be taken in and out together with a lower roll group from a housing. In order to greatly reduce the rearranging time and improve the production efficiency by reduction of labor and the safety of work, the apparatus comprises an arm which is provided at a work side end of a roll support supporting a roll unit, the arm including a hole at a lower side thereof, and an engagement capable of being engaged with the hole of the arm and including a moving up and down mechanism.

Abstract: A bearing device for small rotary machinery having such a construction that a cylindrical bearing having therein a ball bearing is housed in a housing, made of a synthetic resin, for rotatably holding a rotating shaft having a rotor, in which a cap having a flange portion is interposed between the housing and the bearing to stably retain the rotating shaft.

Abstract: A universal physical exercising device includes in combination: a collapsable base supporting frame; a horizontal frame rotatably connected to the base supporting frame through a pair of pivot joints; an adjustable vertical frame structure with a handle member and a pair of vertical sides longitudinally pivoted to a center portion of the horizontal frame; and an elliptical pedal member with foot straps and safety belt fixed at a lower end of the vertical sides of the vertical frame structure. The base supporting frame and the horizontal frame are also provided with a plurality of detachable connecting members for holding the horizontal frame in stationary condition for allowing the vertical frame structure to be operated as a single unit while the vertical frame structure also includes a plurality of anchoring elements for being optionally connected to the horizontal frame so as to be consolidated together for performing either swinging or rotation exercises therewith.

Abstract: The speed of a motor or a moving body driven by a motor is detected by interpolating by an estimated speed, the speed between pulse signals generated by a pulse generator. The estimated speed is obtained by updating a variable representing the torque disturbance obtained by compensating for a variable representing a motor torque by a variable representing a torque disturbance synchronously with a clock pulse of a predetermined interval, and the initial value of the estimated speed and a compensatory amount of the torque disturbance is updated each time the pulse generator generates a pulse. In the prior art, the mean speed of the present pulse signal section was regarded as the initial value in the immediately following pulse signal section, while in the present invention, the real (spontaneous) speed is obtained when the pulse generator generates a pulse signal, and this real speed is regarded as the initial value of the estimated speed of the immediately following pulse signal section.

Abstract: A welding machine for foil webs which are overlapped comprises an undercarriage which includes a rectangular frame having longitudinal frame members and laterally adjustable transverse frame members with wheels supporting the frame. A welding device is positioned on the frame and it in the frame includes centering elements which may be adjustable so as to position the welding device accurately in respect to the frame. The welding device itself advantageously includes slots extending inwardly from each side into which a respective foil end is positioned and roller means which engage with one of the foils for guiding it as the undercarriage is moved over the top of the respective foils to be welded together. The undercarriage during the welding device includes a drive from the wheels to the rollers which includes a shaft assembly having a plurality of universal joints.

Abstract: A molding cavity wall (10) is made in a plurality of parts of a cheap material having a high thermal conductivity, for example a thin metal sheet (10), at least one heating device (11) is applied on the wall in direct thermal exchange relation to the external surface of the wall (10), and a thermal insulator constituted by a foam (12) of highly rigid resin is applied to the wall (10) in uniform pressure transmitting relation to said wall.

Abstract: An internal combustion engine comprising an activating chamber provided separate from a combustion chamber, a valve disposed between the activating chamber and the combustion chamber, fuel feeding means adapted to feed fuel into the interior of the activating chamber in accordance with a predetermined ignition timing sequence and valve opening and closing control means for opening the valve in accordance with the predetermined ignition timing sequence.

Abstract: A safety device on a quill with a sensing head fixably connected thereto interrupts a positioning motion of the quill in case of a collision of the sensing head. For this purpose there is fastened to the quill a mounting plate 6, on which rests a bearing plate on at least three balls 20. The sensing head is fixable to the bearing plate. Several switches and switching cams assigned to them are offset relative to the balls on the bearing plate. In case of a collision of the sensing head, the bearing plate is deflected relative to the mounting plate, thereby causing at least one switch to interrupt the driving motion of the quill.

Abstract: A recreational device for producing the thrill of a series of consecutive free falls, which includes a housing, a shock absorbing cushion throughout the bottom of the housing, an inwardly extending peripheral deck near the top of the housing arranged to provide a launching platform for allowing persons to jump into the housing, and a plurality of horizontal planar non-woven nets of elastic bands arranged at different levels within the housing with each net spanning the whole horizontal cross-section of the housing. The elastic bands are randomly arranged within each individual net so as to leave spans between the bands which are insufficiently small to prevent a person from passing through the nets without bouncing on each consecutive net, the elastic bands having an elasticity sufficient to permit persons to manually space the bands to jump from a higher net of bands to a lower net of bands.

Abstract: A device for connecting two layers of heat meltable material together comprises a toothed member which can be heated and pressed against a ribbed member with the layers of material therebetween. The toothed member includes three rows of teeth with gaps between adjacent teeth. Each row is separated by a gap thickness and the teeth have preferred widths. Thicknesses and lengths. The ribbed member has a pair of ribs that defines three grooves for receiving the three rows of teeth. Clearance is provided between the teeth and ribs while the teeth are bevelled to produce perforations in the heat meltable layers while firmly sealing the layers together around a periphery of each perforation.

Abstract: The safety lock for a barrel of automatic weapons comprises a breechblock carrier whose face facing the barrel confronts a slide. This slide is movable essentially perpendicular to the longitudinal axis of the barrel into a recess provided in the outside surface of the barrel, if the barrel is correctly locked.

Abstract: A sliding plate of a gate valve is guided in guide grooves formed in the region of a flow passage of the two-part gate valve housing. Each guide groove is bounded on both sides [upstream and downstream] by guide strips which extend into the flow channel. The guide strips have axially outwardly directed chamfers, and each such strip has a circular arcuate shaped recess. The recess, which starts at the upper entry point of the guide groove into the flow channel, extends to the lower third of the guide strip. The maximum depth of the recess is 3-5 mm less than the depth (t) of the guide groove 4b. The guide grooves 8a, 8b provide problem-free guiding of the sliding plate when said plate is moved to its closed position, particularly when said plate is moving through the lower third of the flow channel; nonetheless, the guide grooves 8a and 8b present only minimal flow resistance.

Abstract: An upright reactor for the generation of methanol comprises a cylindrical housing closed by a removable hood, where several catalyst beds, arranged one over the other and each carried by a detachable gas-permeable bottom or net, are surrounded by a cylindrical jacket of finned tubes into which open the ends of the exchanger tubes traversing the catalyst bed. According to the invention, horizontal gas-impermeable partitions are arranged below the gas-permeable bottoms or nets of the second lowest and of the next highest catalyst beds at the level of inflow or outflow openings for the gas.

Abstract: A folding baby carriage composed of an articulated tubular metal framework comprises a pair of folding sides (10) which are interconnected by means of a folding base frame (12) and by means of a steering handle (13) which is slideable with respect to the sides (10), and a seat (14) cum-backrest (15) structure fixed to a pair of frames (16, 17) articulated one to the other at an intermediate point (18) of the frame (16) which in its forward part is pivoted at (29) to the steering handle (13) and in its rear part at (25) to the sides (10) and to the base frame (12). The frame (17) is connected to the sides (10) by linkwork (30) so that the backrest (15) can be moved between an upright position and a reclined position, provision also being made between the sides (10) and the steering handle (13) for disengageable reciprocal engagement means adapted to determine in a stable manner the erected and folded positions of the baby carriage.

Abstract: A coordinate measuring machine has supporting members movable in a plurality of coordinate directions which are each made of welded steel construction. Surfaces of the supporting members are covered by sheet metal shells which are spaced by a small distance away from the supporting members and form an air space thereover. This reduces the adverse influences of temperature induced expansions and contractions.

Abstract: A method and an apparatus for sewing a waistband and applying it to a garment using a two-needle sewing machine and a blindstitch folding attachment for the waistband. A waistband is turned up to form the end of a waistband extension and is finished with a shaped seam in the region of the turnup edge. With the top sides lying one on the other, they are trimmed and then supplied by the blindstitch folding attachment to the needles spread out with the trimmed edge pointing in a feed direction. The lateral edges, turned up, are at first sewn onto the central part of the waistband while being transported backwardly. With the sewing machine stopped, a waistband beginning is clamped and extracted from a supply with the end of the waist extension moved from the folding attachment and cuffed in feed direction.

Abstract: A children's motor vehicle comprises a differentiated bearing structure consisting of a single piece moulded out of plastics material, having a generally cradle-like configuration, with a rear box-like portion and a front reticular portion, adapted to house respectively an electrical battery for supplying power to the motor and the motor itself.

Abstract: On a bicycle pedal is mounted a disc with flange elements projecting radially outward. These flange elements in conjection with inwardly projecting flange elements on the bottom or outsole of a shoe provide a bayonet joint connection that is readily established and equally readily released by axial interpositioning of the flange elements, followed by a twist. In addition, an lug is mounted on the pedal that carches in a corresponding recess in the outsole after the bayonet connection is established.

Abstract: The assembly comprises in combination a fixing bushing (3) and a machining unit (6), the bushing being adapted to receive the nose of the machining unit which comprises the nose and a body. The bushing (3) comprises at its inlet mouth (9) inner guide means (13) and outer hooking means (14) and, internally, means (18, 19) for centering the machining unit (6). The unit comprises hooking elements (27) adapted to cooperate with the hooking means (14) of the bushing and slidable means (30) for locking the hooking elements (27).