Abstract: An optical device for modifying a light distribution is made of transparent material and includes a front wall constituting a front portion, a coupling portion for connecting to a light source system, and side walls between the coupling portion and the front portion. The front wall is configured to let through a first part of light emitted by the light source, and the side walls are configured to let through a second part of the light. The side walls have grooves that refract at least 80% of the second part of the light obliquely rearwards with respect to a direction from the coupling portion to the front portion. Thus, the optical device can be used for illuminating both a floor and a ceiling so that light emitted to unwanted directions and potentially causing glare can be kept at a low level.

Abstract: A modular apparatus to enable users to multiply the number of objects being supported by a single trailer hitch receiver which installs into a trailer hitch receiver, which can be connected to an automobile, or which rests independently on stands positioned underneath the apparatus, forming a three dimensional array of interconnected mounting brackets used to support objects above the ground with a plurality of configurations possible wherein the user can vary the width, length and height of the array by adjusting the modular components within the limits of the modular component.

Abstract: An improved page holder comprising a clamp (10R) attached to a self-retracting reel (14), the latter being set at a predetermined tension to retain pages without prohibiting page turning, and having a tension adjustment dial (16) at its lower end. The reel (14) dispenses a monofilament (18) which extends across the reading matter (19) and attaches to a second clamp (10L). Thus the page holder can be applied in a variety of settings, and retains various reading matter (19) against wind, drafts, and the closing tendency of bound books, while enabling manual page turning.

Abstract: An improved workpiece carrier for transfer machines includes a frame, a plurality of upright support members, and a rack and pinion arrangement for adjusting the vertical position of the support members simultaneously with respect to the frame. A horizontally extending transfer bar is provided, and a plurality of carrier brackets are secured to the support member and in turn receive and support the transfer bar such as to permit free horizontal movement of the transfer bar in its long direction, while restraining movement of the transfer bar in directions perpendicular to its long direction. Affixed to the transfer bar are housing elements which include gripping devices for locating and retaining workpieces.

Abstract: A fracturing tool for connecting rods has a first and second body prepared from material with a grain direction, each body having a semi-cylindrical protuberance with an axis substantially parallel with the grain of the material. The two protuberances together define a substantially cylindrical mandrel which can be placed within the large bore of a connecting rod which is to be cracked. The bodies are mounted so that one of them is slidable toward and away from the other in a direction perpendicular to the axis of the mandrel. The method of making the tool includes mounting the bodies on a rotary table having an axis of rotation coaxial with that of the mandrel. The rotary table rotates while a grinding wheel finish grinds the mandrel surface.

Abstract: A precision depth spindle is mounted to rotate within a cartridge but is restrained against axial movement with respect to the cartridge. The cartridge is mounted for axial sliding movement within a housing, but cannot rotate with respect to the housing. A tool chuck is fixed to one end of the spindle for movement with the spindle, the tool chuck supporting a cutting tool. A spindle stop is mounted to the tool chuck and can rotate with respect to the chuck. This allows the spindle stop to be maintained stationary while the tool chuck and the cutting tool rotate. The spindle stop is finely adjustable axially with respect to the tool chuck, thus determining the depth to which the cutting tool will enter a workpiece. The cartridge has a limited axial motion range with respect to the housing, and both the spindle and cartridge are urged toward the workpiece with respect to the housing by a suitable spring or pressure means.