Abstract: A security hinge joint includes a substantially planar, flexible first member, including first and second blind hinge eyes. A second member is pivotable relative to the first member and includes at least one second open hinge eye which lies between the blind hinge eyes. A hinge pin extends through the second open hinge eye and into the first blind hinge eye. The first blind hinge eye wraps around the end of the hinge pin, enclosing the bottom of the pin when the joint is in a closed position, and is interrupted to define a lead-in slot through which the hinge pin can pass. For insertion or removal of the hinge pin, one end of the first member must be flexed out of the plane of the first member.

Abstract: A shimming system and shim assembly are provided, particularly for door guides and supports for sliding and folding doors of closets and the like. The shim assembly includes shim members having shim plates and projections of different lengths so that different shim members can be assembled in stacked relationship with one another to raise the door guide or support to a desired height. The shim members are of clear plastic material so as not to require painting, staining, or the like. Each shim member can be readily reduced to proper width and length so as to be positioned completely under the base of the door guide or support and thereby be substantially concealed. The shim plates have score grooves by which portions can be broken off to reduce the shim plate to the proper size and the shimming system includes a tool for facilitating removal of the unwanted portions beyond the score grooves.

Abstract: A novel packaged product as provided by process of contacting an article with a covering film and stretching the film until the film is severed from itself and thus clings to the surfaces of the articles. An apparatus is provided for carrying out the process.

Abstract: The hinge of the strap type is made as a connecting mechanism between the parts to be secured to the elements to be connected together. The strap comprises the cylindric selvedges each of which cooperates with at least one groove formed in at least a portion of a double part in form of a jaw and made integral with each of the elements to be assembled together, a central band in the strap having minimum width to permit free rotation of such elements relative to one another.

Abstract: This invention provides a mechanism whereby a person may open a door without touching a surface which was previously touched by others opening the same door. Mechanism are provided for advancing material beneath a sturdy door handle in such a manner that when opening the door, a persons fingers will touch only the clean, advanced material and not the handle itself.

Abstract: An improved hinge for supporting a door on a door jamb wherein the jamb leaf of the hinge is provided with an extended part having a buck pin that is offset from that part of the leaf aligned with a door edge so that the pin is insertable in an aperture provided in the strongest part of the wall behind the door jamb. The jamb leaf is secured to the door jamb by screws located at the extended part of the leaf, i.e., outside the area covered by a closed door, and a protective cover is provided to prevent access to the screws after the leaf is secured to the door jamb.

Abstract: A method and apparatus for determining the angular position of a workpiece and for positioning the same relative to at least one tool. The workpiece has at least one set of teeth. In a first measuring operation, a measuring wheel having a tooth construction is made to mesh with a set of teeth of a reference workpiece. Pulses are derived from the rotating measuring wheel and from a reference shaft which has a known gear ratio with the measuring wheel, and consequently also turns. A first phase measurement is undertaken between the pulses, the result of which is stored as the reference value. The reference workpiece is replaced with a workpiece which is to be machined and which is provided with teeth. A second phase measurement between the pulses of the reference shaft and of the measuring wheel are undertaken in a second measuring operation. The reference value of the first phase measurement is compared with the result of the second phase measurement.

Abstract: In an apparatus for closing a fireproof door, a holding device comprises a latch mechanism and a slider. The latch mechanism comprises an actuator member swingably supported in a housing which is provided with a tubular portion wherein a stopper is inserted and downwardly biased by a spring, the biasing force of the spring being adjustable by a screw which is threaded into the tubular portion. The slider is provided with an inclined surface at the front end thereof and a through-hole to receive the stopper therein. The slider is slid into the spacing formed between the actuator member and the housing with upwardly guiding the stopper by the inclined surface of the slider and the slider is locked by the stopper when it falls into the through-hole of the slider. The slider is released from the latch mechanism by swinging the actuator member or upwardly pushing the stopper against the biasing force of the spring.

Abstract: In a hinge for cabinet doors, a four-joint hinge articulation having two links and a single-arm lever pivotally mounted in the cabinet wall-related hinge part with its free end able to swing in a plane lying at right angles to the axis of the articulation and being urged under resilient bias against the cam face of a cam body disposed in the area of the wall-end pivot eye of the inner link, the cam body is journaled on an axis offset from the pivot axis of the pivot eye of the inner link, and additionally guided for displacement at a distance from the two pivot axes between the pivot eyes on opposite sides of the inner link.

Abstract: A single or opposite direction damper hinge has a casing rotatably enclosing a rotor. The rotor has a center cylindrical portion mounting a reduced outwardly projecting intermediate portion which in turn outwardly mounts a further reduced stop portion. The casing has a main inner cylindrical surface which is interrupted by an inwardly projecting reduced engagement portion. In one embodiment, all of the rotor center, intermediate and stop portions and the casing main inner surface are coaxial. The casing reduced engagement portion, however, has a larger radius than the outwardly projecting intermediate portion of the rotor and is eccentric to the rotor outer surfaces and the casing main inner cylindrical surface. In assembly for operation, the rotor is mounted coaxially in the casing with the exception of the casing engagement portion which, in this embodiment, has the larger radius and is eccentric to the rotor intermediate portion.

Abstract: A caster wherein the web of the bifurcated frame for the wheel and the carrier for the frame define a plain thrust bearing which allows the frame to swivel relative to the carrier about an axis extending at right angles to the axis of the wheel. The frame and the carrier have abutting surfaces and are held against axial movement away from each other by a ring-shaped coupling.

Abstract: A plastic part has a broad surface area for solvent bonding to another plastic part; the bonding surface has a groove, recess, or non-dissolvable portion for restricting the solvent to a narrow marginal edge area for uniform distribution. In one embodiment, a plastic hinge (FIG. 2) and two hinged members (64,66) are pivotally interconnected by the leaves. Grooves (52, 54) are formed on the mating surface of hinge halves. These grooves define and isolate marginal portions (56, 58) on the faces of the leaves from inner portions (60, 62). The grooves act as barriers to prevent penetration of a solvent, used for bonding the hinge leaves to the two hinged members, from the inner support portions of the leaves. When the solvent is injected into the area of contact between the mating plastic parts from the outer edge of each hinge element, e.g., by a syringe, it wets and dissolves the marginal portions and the underlying areas of the two hinged members but is restricted to the marginal areas by the grooves.

Abstract: A hand-operated cutting tool for cutting walling materials such as paneling and drywall. The tool has a base with a smooth, flat bottom, similar to a planing tool. Its handle is curved, attaching at at least one end of the base, and extends over the base. A cutting blade is centrally located on the base, and held in place by a blade clamp. The blade clamp is pivotably attached to the base such that the tip of the blade extends through an opening formed for that purpose in the bottom of the base, and the tip is extended and retracted by the pivoting motion of the clamp. The clamp also has attached thereto a lever arm to facilitate the pivoting. The lever arm is biased against an upstanding member which is manufactured such that the lever arm, and thus the blade tip, can assume different positions. The upstanding member has a continuous groove formed therein which winds about the member from top to bottom such that it appears as several grooves which they may correspond to several positions of the lever arm.

Abstract: A resiliently mounted dual wheel caster is provided which includes an outer body including a hub with a transverse aperture, and an inner body member pivotally mounted to the outer body and mountable to an article to be supported by the caster. A resilient shock absorbing member is disposed between the inner body and the hub of the outer body. An axle is disposed through the aperture in the hub and resilient wheels are mounted one each end of the axle. The resilient wheels and the resilient member act in series to effectively absorb shock encountered by irregularities in travelled terrain and prevent such shock from reaching the supported article.

Abstract: An energy saver door closer for use with a sliding door. A long cylindrical housing is attached to one vertical edge of the sliding door, a weight is in the cylinder and a cable connects the weight over a pulley in the top of the cylinder to an anchor in the door jam. A seal surrounds the weight so that there is a sealing contact with the housing to form a pneumatic cylinder therein. The lower part of the cylinder is provided with passageways which lets air go in or out. The upper part of the weight is provided with a valve which is always biased to the opened position but is held closed so long as the cable is taut When the cable is loose, the valve opens and air can rush out and the door will close faster.

Abstract: Gate closure apparatus for closing a gate mounted pivotably on a gate post, such apparatus for connection to the gate and gate post and for developing and storing energy upon opening of the gate, and upon release of the gate, the gate closure apparatus for releasing the energy to produce and apply torque to the gate sufficiently large to close the gate; such apparatus may include a coil spring wound in a predetermined direction and having a normal state, upon the gate opening the spring winding in a predetermined direction out of the normal condition (e.g. coiling further tightly) to develop and store the energy, and upon release of the gate, the spring unwinding and returning to the normal condition to produce and apply the torque to the gate.

Abstract: A retractable door stop comprising a body secured to a hinge assembly is described. The door stop is adapted to be pivotally secured to a door jamb on which a door is pivotally mounted. In use, the door stop is pivotable about an axis spaced from the pivot axis of the door and generally parallel thereto between an inoperative and an operative position. In the operative position of the body of the door stop engages the door at the end side to which the door hinges are secured and which abuts the door jamb when the door is closed so as to keep the door in an open position.

Abstract: A jamb plate is mounted between the jamb bracket of a conventional door closer and the door jamb to prevent the door closer from tearing away the door jamb.

Abstract: In a synthetic resin spacer having two mounting portion (1, 2) for connecting plates (10A, 15) in spaced and parallel relation to each other, one mounting portion (1) is formed integrally with the other mounting portion (2) pivotably through a hinge portion (3); the other mounting portion (2) is provided with a vertical frame (11) which is perpendicular to the plate (10A) connected to the mounting portion (2); and the vertical frame (11) is provided on the side of the hinge portion (3) with an engaging projection (11a) which is engageble with and disengageable from a side edge of the plate (15) connected to one mounting portion (1). With such construction, the two plates can be connected firmly, and the repair or maintenance and inspection of electronic parts on the plates can be done extremely easily.

Abstract: In accordance with a method and an arrangement for exchanging tool holders of a variable number, only one tool holder is brought in working position, so that only small mass is to be moved, and for the tool holder movable in working position an energy supply and a drive unit is needed, whereas the remaining tool holders are located in a storage position and/or at least one magazine.