Abstract: A door closer for a sliding screen or door which can be vertically mounted on the vertical non-movable frame of a doorway. A tension cord extends inwardly from the door-opening to be secured to the inboard end of a sliding screen or door whereby automatically to pull the screen or door across said opening. The closer does not obstruct the opening when said screen or door is in open position.

Abstract: A stabilizing disc for farm equipment used in muddy fields or loose soil which has a circular plate-like body with a centering ring of one diameter fastened to, and extending away from, one side of the disc and a second centering ring of different diameter secured to, and extending away from, the other face of the disc. Both centered rings are concentric with the outer edge of the disc, and a plurality of fastening members are arranged within the centering rings for securing the disc to the wheels of crop-harvesting equipment.

Abstract: The invention relates to a textile web made of woven or knitted fabric which includes essentially longitudinally processed continuous mixed fiber or bi-component threads in relation to the course of the web, with a first type of fiber which forms the substantial portion of the threads or loops running in the direction of the web and which can be thermoplastically formed or separated at a first raised temperature, and with a second type of fiber which forms a smaller part of the threads or loops running in the direction of the web and is essentially structurally unchangeable during the first raised temperature.

Abstract: A coverstock for disposable sanitary absorbent products is described. It comprises a non-woven web having a body-contacting surface and a material-contacting surface. The web is partially impregnated in selected areas with a fluid-repellent material such as a hot-melt adhesive. The penetration of the repellent material extends from the material-contacting surface, a distance toward the body-contacting surface at least 5% and not more than 95% of the thickness of the web so that the body-contacting surface is free of fluid-repellent material, and so that the material-contacting surface can be secured to the material by application of heat and without any additional adhesive material. A disposable absorbent pad made with the coverstock material, and the process for making the coverstock material and the pad are also disclosed.

Abstract: A sail maneuverable through the rotation of a rolling and unrolling structure to which the sail is anchored along an anchorage edge. A sheath surrounds the rolling structure and engages the sail at opposite sides along a coupling line spaced from the anchorage edge. The sheath and that intermediate portion of the sail between the coupling line and the anchorage edge being shaped so that when the sail is unrolled the sheath stretches out, retaining the intermediate portion within the end zones unstretched, causing the sail to take a bellying or fat-sail arrangement. At the beginning of rolling, the sail is pulled back into the intermediate portion and progressively also into the end zones, thereby assuming a flat-sail arrangement.

Abstract: A helm steering wheel for a sea-going vessel is mounted on the back of the wheel-support so that the instruments on the support are fully visible and not obstructed by the passing of the spokes of the wheel. The wheel is in the shape of a concave dish and rotates on an axle which is mounted in the support so that the support is between the wheel-hub and the operator and positioned so that the rim of the wheel is closely adjacent the operator standing in front of the support.

Abstract: A baby bed is described which includes an air mattress connected to a bubble chamber consisting of a partially-filled container of fluid through which air is discharged and from which an arhythmic supply of air is supplied to the air mattress so that the surface of the mattress vibrates in an arhythmic fashion to prevent apnea.

Abstract: The present sailboat sail has extremely high aerodynamic efficiency. The sail has a bifurcated forward edge, the forward ends (17A) of each of which is carried by a footing rope (45) in a track of a vertical stay (22); a fairing (44) is arranged to wrap around the leading edge of a mast (3), and the fairing has a pair of trailing edges (44A), each of which has a footing rope also disposed to be connected to said vertical stays (22); the stays (22) can be separated by a spacer (42) to control the aerodynamic disposition of the trailing edges (44A) of the fairing (44) and the leading edges (17A) of the bifurcated portion of the sail; an enlargement member (46) may be disposed between the inside of the leading edge of the fairing and the outside of the leading edge of the mast further to improve the aerodynamic disposition of the fairing and sail.

Abstract: A stop-mechanism is disclosed for use with a document feeder which itself supplies documents to-be-copied onto a glass top. The stop-mechanism includes a flag which is disposed in contact with the glass top of the copy machine and which is actuated by the document to-be-copied as it is discharged onto the glass top of the copier by the document feeder.

Abstract: A drive mechanism is disclosed for a document feeder which is used in supplying documents to-be-copied onto the glass top of a copy machine.The drive mechanism includes a set of feed wheels which remove the document to-be-copied from a document support and by rotating in one direction move the document to-be-copied against a set of drive wheels. The drive wheels, when rotated in one direction, move the document onto the glass top of a document copier against a stop, where the document is copied. Thereupon the drive wheels rotate in the opposite direction to remove the copied document from the glass top of a copying machine and deposit the copied document into a receiving tray.

Abstract: A drop sheet feeder for mounting above the platen of a printing apparatus has a plurality of upstanding trays moved by a tray shifting device to release individual sheets of paper stored therebetween. The platen drive of the printing apparatus is operatively connected with the drop sheet feeder to release the individual sheets of material sequentially. A sheet feeding device of the drop sheet feeder is operatively engageable with the released sheet of sheet material to feed the sheet into engagement with the insert portion of the feed path about the platen of the printing apparatus. The drop sheet feeder can be used to feed individual sheets of material, multi-part form sets or envelopes.

Abstract: A continuous elastic ribbon is fed to a diaper assembly station in a stretched condition while, at the same time, an adhesive is continuously applied to the elastic ribbon. Simultaneously, absorbent batts, as well as webs of moisture-impervious batt sheet material and moisture-impervious top-sheet material are fed to the diaper assembly station. Further, and simultaneously, while the webs are traveling to the assembly station, the quantity of the adhesive applied to the elastic ribbon is changed so that there is substantially less adhesive in pre-determined isolated portions of the stretched elastic ribbon. At the assembly station, a stretched elastic ribbon is adhered to the moisture-impervious backsheet web along portions of the elastic ribbon which intervene the selected areas of the web while lesser quantities of the adhesive are located.

Abstract: In the present invention, a frame, mounted above the platen of a typewriter or a word processing machine, supports a drive roller in contact with the platen. This drive roller is also in contact with a tray-moving mechanism, supported above the drive roller. A plurality of trays carried in the frame are supported above the platen so as to hold sheets of paper or envelopes vertically between trays and in alignment with the sheet insert side of the platen. When the platen is turned backward, the drive roller actuates the tray-moving mechanism, causing a tray to move, separating it from the next adjacent tray and permitting a sheet of paper which had been placed therebetween to drop into position against the platen. Thus the sheets are fed automatically against the platen when the platen rotation is reversed.

Abstract: The towel cabinet of the present invention includes a first compartment for storing and dispensing clean, unused paper towels, and a second storage compartment for receiving and storing used paper towels. The two compartments are connected by a manual control which, when actuated, opens a door in the first compartment to permit a clean towel to be exposed and removed and at the same time actuates a panel in the second compartment which compresses used towels into the second compartment. An elevator is provided in the second compartment for adjusting the floorplate of the second compartment as more and more towels are compacted into it, and a corridor is provided between the door in the first compartment and the panel in the second compartment into which the clean towels are dispensed and disposed for retrieval by the operator and into which the used towel is discharged for movement by the panel into the second compartment.

Abstract: A surgical suture is described which consists of a monofilament core and a braided sheath surrounding the core. The sheath and the core are temporarily secured together at one end so that the core acts as a stiffener for the sheath during the surgical procedure. After the core and sheath are detached, the core is removed from the sheath and discarded, whereupon the sheath becomes flexible and easy to tie into a secure knot.

Abstract: In the high speed rewinder of the present invention a parent roll of paper unwinds from a back-stand to feed a wide web of paper to a perforator, web separator, core-feeder and log rewinder. The perforator includes a stationary ledger blade and a rotating knife-blade roll which cut lines of perforations across the web. The web separator includes a pair of operatively opposed rolls rotating in synchronism, one of which has a spiral groove therein and the other of which has means arranged to force the web of paper into the groove to tear the web within the groove. A secondary winder roll is disposed in spaced relation to the first winder roll. The secondary winder roll can be slowed down to cause the core to advance between the first and second winder roll. A diameter control means is disposed near the secondary winder roll to limit the outer diameter of the finished log of paper.

Abstract: A solar energy concentrating collector has a concave parabolic reflective member supported on a plurality of shaped support assemblages, which are parabolically shaped on the top and extend transversely in a direction perpendicular to the axis of the collector.Each assemblage has a vertical planar support and also a flexible member. The flexible member has a top for supporting the reflective member and an appendage affixed to the top and extending away therefrom into operative engagement with the vertical planar support.The top of the flexible member can be moved against a template having a parabolically shaped bottom surface. The space between the top of the flexible member and the top edge of the planar support is bridged by the vertical downwardly extending appendages which are fastened to the support after the top has been properly positioned. The flexible member thus provides a correct concave upper surface having a parabolic shape that matches the accuracy of the template.

Abstract: A microwave energy concentrating collector having a concave paraboloid reflector surface supported on a plurality of shaped supports, said supports being parabollically shaped on the top edge and extending radially from a circle near the axis of revolution of the paraboloid to its periphery, and arranged to coact with a reference means. The reference means may, in some embodiments, be equidistant from the central axis. In others, it may be a radially extending reference.The reference means insures accurate placement of reflector components for high accuracy focusing after assembly. It may be an indentation on the bottom edge of the supports coacting with an abutment, or it may be a vertical edge of the support coacting with an abutment. In other embodiments, the abutment may be an overhead template having a bottom edge which is parabolic in shape, said template being accurately located with respect to a horizontal reference so as to form an abutment for the parabolic shaped support.

Abstract: An electric heating apparatus for softening and molding fillet wax strips used in foundry molds and castings includes a housing supporting a plurality of electric radiant heaters, such as lamps, above a platform for holding strips of fillet wax during preheating. An electronic control circuit is provided in the housing for varying the heat output of the radiant heaters and includes a thermostat located between the heater and the platform for limiting the temperature to prevent melting of the wax strips. Electrically heat fillet-forming tools, supported in holder on the housing during non-use periods, are provided for forming the preheated wax strips after application thereof to a mold. The tools are provided with ball-shaped tips and the housing is provided with a separate adjustable electronic control circuits for each tool so that the heat output of each tool can be adjusted to a temperature appropriate to the particular wax being worked and the size of the ball-shaped tip.