Abstract: A swing arm support housing is formed with an upper housing assembly and a lower housing assembly. Each housing assembly includes a pair of openings spaced one from the other but each formed along parallel axis. One opening of the upper housing assembly extends into but not through the housing and is of a size and configuration to be mounted on top of a lamp support post. The other opening of the upper housing assembly extends completely through the housing and is fitted proximate one of its ends with a clamping ring that has a longitudinal slit to permit distortion of the ring, proximate the slit and in a radial direction, to clamp same against the lamp swing arm or hold the swing arm in selected positions. A clamping actuator extends into the housing along an axis perpendicular to the axis of said openings and at a position proximate the second opening to coact with the clamping ring proximate its slit to compress the ring against the lamp swing arm or release the ring therefrom.

Abstract: A pharmacy-type lamp having a light source disposed at one end of a tubular swing arm the other end of which extends into a vertically disposed support tube secured to a base pedestal. The tubular support is formed from coined seam tubular stock having extra infolded edges material extending from the seam during the tubes formation to form a rib-like track within the support tube for coaction with stops coined from the material of the swing arm, at an extremity thereof disposed within the support tube, to facilitate rotation of the swing arm within the support tube while limiting such rotation to almost 360.degree.. A clutch, carried at one end of the support tube, centers the swing arm therewithin and facilitates gripping and release of the swing arm with respect to the support tube to restrict and permit movement (sliding and rotational) of the swing arm within the support tube.

Abstract: Each one of a pair of swing units, for mounting the swing arm assemblies of a swing arm lamp, is formed as a relatively short substantially tubular member having a tubular mounting end of reduced outside diameter and that is provided with a circumferential groove. The reduced end of each swing unit is received by a respective mounting seat of a vertical swing bracket which mounts both swing units for rotation about a pair of predetermined axis of rotation that are spaced and parallel one to the other. A pair of threaded bolt like members are carried by the swing bracket so that an end of each threaded member can be moved from a position wherein the end projects into its respective groove, to prevent unseating of the swing unit from the bracket, but not so as to prevent rotation thereon; to a position wherein said ends are removed from the respective grooves so that the swing units can be removed from the bracket.

Abstract: A pharmacy type lamp having a light source disposed at one end of a tubular swing arm the other end of which extends into a vertically disposed support tube secured to a base pedestal. The tubular support is formed from welded seam tubular stock having extra weld material extending from the seam during the tubes formation to form a rib-like track within the support tube for coaction with stops coined from the material of the swing arm, at an extremity thereof disposed within the support tube to facilitate rotation of the swing arm within the support tube while limiting such rotation to almost 360.degree.. A clutch, carried at one end of the support tube, centers the swing arm therewithin and facilitates gripping and release of the swing arm with respect to the support tube to restrict and permit movement (sliding and rotational) of the swing arm within the support tube.

Abstract: The swing unit, for mounting the swing arm assembly of a swing arm lamp, is formed as a relatively short substantially tubular member having a tubular mounting end of reduced outside diameter and that is provided with a circumferential groove. The reduced end of the swing unit is received by the mounting seat of a support unit which mounts same for rotation about a predetermined axis of rotation. A threaded bolt like member is carried by the support unit so that an end of the threaded member can be moved from a position with its end projecting into the groove, to prevent unseating of the swing unit from the support, but not so as to prevent rotation thereon; to a position with its end removed from the groove so that the swing unit can be removed from the support. The swing unit receives an end of a tubular swing arm of the swing arm assembly along a line which is either perpendicular to said predetermined axis of rotation or co-axial therewith.

Abstract: A lamp is provided of tubular member design with cooperative friction and sliding elements which readily interfit into the tubular members so as to be fully positional in the upward travel, as well as rotatable through substantially 360.degree.. The construction is of simplified design so as to make manufacture and assembly readily achievable.

Abstract: A lamp swivel composed of two main coaxial members, which are at least partially rotatable relative to each other. An inner pin extends from one member to a circular inner groove in the other member, the groove being coaxial with the members. However, the other member, usually composed of a metal such as brass, copper or aluminum which may be anodized, is coined so as to prevent egress of the pin from the groove. Thus the two members are semi-permanently attached to each other and can rotate, by less than 360 degrees, relative to each other. The invention is especially applicable to provide an articulated lamp mounting for a swing arm lamp or the like, the lamp swivel being a swivel connector or coupling means which provides an articulated mounting attachment for the lamp.

Abstract: A swivel joint assembly comprises a first arm member having a first end joint on one end. The end joint has an arcuate groove thereon. A second arm member has a second end joint on one end. The second joint has stop structure thereon for limiting rotational movement of said swivel joint to approximately 360.degree.. A swivel structure provides rotational movement between the first and second end joints. The swivel structure includes a fastener for securing the first and second end joints to each other. The stop element protrudes into the arcuate groove and a stop shoulder on the arcuate groove co-acts with the stop element to limit rotational movement of the swivel joint.

Abstract: A swivel assembly comprises a housing having a bore extending therethrough along a central axis. The housing has an end wall with an opening about the axis extending therethrough. A generally spherical swivel member is rotatably and swivelly disposed in the bore and includes an extension protruding through the opening. The portion of the extension within the opening is substantially smaller in transverse cross-section than the opening to permit limited swivel movement of the swivel member in the housing. The bore has first and second sections. The first section has a smaller diameter than the second section and thereby forms a wall. A stiff resilient element is provided between the wall and the swivel member for preventing movement of the spherical swivel member when subjected to a heavy load.

Abstract: A swivel joint assembly comprises a first arm member having a first end joint on one end. The end joint has an arcuate groove thereon. A second arm member has a second end joint on one end. The second joint has stop structure thereon for limiting rotational movement of said swivel joint to approximately 360.degree.. A swivel structure provides rotational movement between the first and second end joints. The swivel structure includes a fastener for securing the first and second end joints to each other. The stop element protrudes into the arcuate groove and a stop shoulder on the arcuate groove co-acts with the stop element to limit rotational movement of the swivel joint.

Abstract: A part, such as finial or the like, is molded of plastic material so that during the molding process there is formed within the part a bore having internal threads formed therein for a predetermined extent of its length and so as to terminate a predetermined distance in from the entry end into the bore from the base of the part. A circular recess, surrounding the entry end of the bore, and a number of rectangular indentations, are also formed in the base during the molding of the part; which is molded with the parting line of the molded parts in a plane that includes the axis line of the bore and the internal threads.The molding machine parts are formed to insure uniform and precise threads by locating the cavities, within which the parts are molded, all equally distant from the gate; and by forming cooling water tracks in predetermined positions with respect to the mold parts and cavities.