Abstract: A teaching device and game comprising a game board bearing instructions; marker pieces; dice for determining by lot the advancement and position of the marker pieces; reward indicator members representing "jurors" to be won or lost by each participant who, having been accused of a "crime", stands in the position of a criminal "defendant"; a variety of game elements or cards representing a variety of different criminal indictments, criminal defenses, and questions relating to various criminal and constitutional evidentiary situations, which, if answered correctly, gain reward indicators or "jurors" for the participant, the ultimate goal being to become the first participant to accumulate a predetermined number of "jurors" and thereby to be found "not guilty".

Abstract: A press and vacuum box combination for manufacturing articles from fluent, curable or hardenable material within a vacuum atmosphere, especially designed to provide access to the mold parts, optimum article handling and improved safety. The press has side frame members, a cross head lying in a horizontal plane and extending between the side frame members, an axially reciprocable ram movable between raised and lowered positions, a platen associated with the cross head and a platen associated with the ram. A mold part is associated with each of said platens, and the mold parts are arranged for movement between opened and closed positions. In the closed position, the mold parts define at least one cavity having the shape of an article to be molded in the press. One of the platens has means at one edge thereof for hingedly mounting the platen for movement between raised and lowered positions with respect to the cross head. Means are associated with the cross head for supporting the hinged mounting means.

Abstract: A mold assembly for injection molding of precision composite articles, which is particularly adapted for use in making highly precise oil seals having a rubber body bonded to a metal mounting flange.

Abstract: An apparatus for manufacturing fluid seals, which includes first and second mold parts movable along a given axis between open and closed positions. One mold part has a radially extending mold surface adapted to receive and support one surface of the flange portion of an insert to which a molded part of the seal is to be bonded, and the other mold part has a portion adapted to engage an opposite surface of the flange to hold the flange against the receiving and supporting mold surface to prevent leakage of fluid material from said cavity along the flange.

Abstract: A method of forming a fused bifocal contact lens having "no jump" characteristics at all points of the segment line separating the distant vision segment or zone from the near vision zone is disclosed. In one embodiment a cylindrical blank is rotated about a given center line and a front curve imparted thereto by moving a tool in an arc about a point radially offset from said center line, in which an opening is then cut in the center of the resulting blank of a size desired to provide a distant vision segment, in which a mass of fluid material for forming the remainder of the lens is cast in place covering at least a portion of said blank, including the front surface portion and the opening therein to form a composite blank, and in which the resulting composite blank is cut to form a contact lens such that the rear base curve thereof comprises portions of both near and far vision segments in which the front surface comprises entirely material from which the far vision portion is made.

Abstract: A disposable filter unit for use with a parts washer or the like. The filter consists of a body in the general form of a bag, made from a softenable but substantially solvent-impermeable thermoplastic material having a neck portion attached to a mounting collar. The mounting collar is a stiff but resilient element suitable for being positioned and retained within the drain opening of the parts washer, being constantly held in place by a cup or screen. The filter body has large by-pass openings in the neck, smaller openings in the upper body portion and still smaller openings in the lowermost portion. The filter acts by trapping sharp-edged or jagged particles such as slivers and filings, both on the interior surface of the bag and within the openings. Entrapment of the filtered material effectively creates a finer mesh filter, and the graduated opening sizes provide a combination filtration and settling action.

Abstract: An apparatus for molding articles, particularly those having a body portion formed from a cured material and bonded to a relatively rigid insert portion. Two mold members are arranged for relative movement along a given axis between open and closed positions. Each of the members includes surfaces at least partly directed towards each other to define in said closed position of the members, a molding cavity between the members. One of the mold members has a part for engaging a relatively rigid insert, so as to form a flash barrier on the insert when it is engaged by the mold part. The mold has surfaces for supporting the insert on at least one of its surfaces. The mold assembly includes a third mold member which is movable relative to both of the other two mold members. The moldable material from which the article is to be formed is received on one mold member, and the other member is reciprocable along a given axis and adapted to apply a predetermined closing force to the first and third members.

Abstract: An improved rotary end face mechanical seal assembly particularly adapted for intermittent use in severe service environments. The seal comprises at least one relatively stiff primary sealing ring having an axially facing, radially directed end face portion, at least a part of which, in use, engates an oppositely directed member to form a primary seal band area. The primary seal ring includes an at least partially outwardly directed seat for receiving a portion of a secondary sealing and driving member which is made from an elastomeric material, which engages the seat so as to form a secondary seal, to transmit driving torque to said primary seal, and to prevent relative rotation between the primary seal ring and the secondary sealing and driving member. The secondary member also transmits an axial end load to the primary seal face to achieve the primary seal.

Abstract: An apparatus and method for molding an article such as finished seal of known type, comprising a flexible member bonded to a rigid element. During conventional manufacture, the rigid element is clamped between upper and lower seal-forming molding elements and, in many instances, after engagement of the rigid element, continued traveling of the upper and lower molding elements toward each other is used to provide a "closed stroke". In the closed stroke operation of the present invention, the continued traveling in the closed stroke stage requires no substantial deformation or shaping of the rigid element.An apparatus and method is disclosed in which the molding elements include an outer movable, biased, annular casing engaging element, for example a ring, which is biased in an extended position. The ring is retractable against the bias during the continued travel of the molding elements in the closed stroke.