Abstract: A globe unit includes a globe element having basic geographical indicia thereon and which is supported on a stand unit. The globe unit further includes a plurality of hemispherical covers, each of which has markings thereon which depict geographic, historic, political or scientific information. The covers are releasably mounted on the globe element by means of a tab on the globe element frictionally engaging the covers adjacent to slots in the covers.

Abstract: An arterial cannula which includes a diverting side hole which simultaneously perfuses blood to the body and the lower extremity. Two barbs on the cannula exterior position the diverting hole just inside the blood vessel and prevent the back wall of the blood vessel from blocking the diverting hole. A transparent flash chamber on the proximal end of the cannula provides a visual indication of the entrance of the diverting side hole into the blood vessel. When the diverting hole enters the blood vessel, blood immediately fills the flash chamber.

Abstract: A display device of the matrix type utilizes coincident current selection of display elements by the provision of row conductors (R) activating row electromagnets (D) and column conductors (C) activating column electromagnets (H). Each display element includes a rotatable vane (S) which is stable in open and closed positions and a permanent magnet (M) co-operates with the electromagnet (D) to urge the vane (S) into the appropriate position.A clutch member in the form of a bar (L) extending from the vane (S) contacts the pole face of an electromagnetic (H) which, when activated, serves to inhibit movement of the vane irrespective of activation of the row electromagnet (D). Thus by pulsing the display row-by-row, the state of the display elements can be set by selective inhibiting of movement in coincident manner of the appropriate vanes (S) by pulsing the respective column conductors.

Abstract: A dentistry kit for tooth extraction consisting of a vise-type grip member having a joint member engaged by a forked end of a lever whose convexly curved fulcrum surface rests against a planar base plate located on teeth adjacent to the extracted tooth. The connection between the grip member and the lever is thus of the type generally resembling an angularly loose swivel joint. The grip member has two hemispherical tips, for engaging correspondingly shaped indentations drilled in the buccal and lingual side of the tooth. The tool set combines a virtually ultimate simplicity of the elements, resulting in an easy cleaning and disinfection, with an improved operation mainly due to the fact that the extreme pull force can be delicately gauged, while the direction of the force can also be changed by displacing the point of contact between the fulcrum and the base plate.

Abstract: A sulky hitch in the form of a generally wishbone-shaped or Y-shaped assembly having two rearwardly diverging tubular members attached to the cut-off forward ends of the conventional shafts of a sulky, upwardly and inwardly curving portions contoured to the hind quarter area of a horse and a forwardly and downwardly extending member attached to an upstanding post on the forward portion of the horse's back.