A lens system having a main photo-taking lens with a fill-in lens detachably set in between the main photo-taking lens and the image plane to change the focal length of the entire system. This fill-in lens has, from front to rear, a positive 1st lens element, a negative 2nd lens element and a positive 3rd lens element. The glass of the positive 1st lens element and the lens form and glass of the positive 3rd lens element are properly chosen to minimize the bulk and size, while still achieving im...

A fill and seal machine designed to charge liquid products into open-topped containers of predetermined configurations and dimensions and to apply closure members to such containers after the charging operation. An incrementally rotatable carrier disc disposed in communicating relation to a plurality of work stations has a plurality of circumferentially spaced dished portions that communicate with the periphery of the carrier disc, said dished portions successively receiving and transiently reta...

There has been provided, a digital circuit for interpolating the intensity values between adjacent pulsed data signals. The interpolation includes, effectively, providing a plurality of shades of gray between adjacent received data. The interpolation data is applied to the display means to effectively fill the interstices between the adjacent image lines. When thus applied, the resultant image is one of a smooth transition between adjacent analog data thereby constituting a more readily readable...

A fill pipe assembly adapted to be connected to a silo and extend from the top thereof to the lower portion for connection to a blower or the like by which the silo is filled with silage, etc. The upper end of the fill pipe has a laterally extending discharge structure and the invention primarily comprises the provision of suitable pivots and brackets which are axially aligned and intermediately spaced between the upper and lower ends of the conduit, whereby the conduit may be oscillated to move...

Apparatus employing optical means for measuring the level of a liquid or granular substance in a container under conditions when actual contact or even close proximity of the apparatus and the substance is impractical or undesirable.

A fractional-fill pipette assembly adapted to fill to a predetermined mark to obtain a desired known volume of liquid such as blood, plasma, test reagents or the like is disclosed. A means formed of a hydrophobic material is positioned within the tube bore, a predetermined distance from one end thereof so as to divide the capillary tube into two segments, one of the segments having a precise known volumetric capacity for collecting a desired known volume of liquid so that when the liquid fills t...

A manhole closure means for sealing a tank manhole aperture including an elongated strongback carrying a fill cover on its underside for covering a fill aperture in the closure means, such strongback being hinged to the manhole closure means at one side of the fill aperture for swinging movement over and onto the fill aperture in closed position. An elongated latch arm is hinged to the manhole closure means adjacent the fill aperture in a position opposite the strongback for swinging movement to...

A humidifier comprising a container having a bowl-shaped lower portion. Integral with the lower portion is an upper wall which slants upwardly and inwardly and terminates in a top having a main opening for receiving a vapor-producing head. A Baffle is integral with the upper wall and is spaced between an outlet opening and the main opening. A fill opening having a conical downwardly and inwardly tapering wall extending below the outlet opening is provided at a location diametrically opposite the...

A nucleonic fill gauge for a vessel is provided by mounting a source of radiation inside the vessel to direct radiation in all directions toward the walls of the vessel. A plurality of radiation detectors mounted on the walls around the outside of the vessel respond to radiation passing through the material in the vessel. The signals from each detector are coupled, for example, by light pipe means to a central processor which generates an output signal proportional to the amount of material in t...

A liquid fill control for an automatic washing machine which shuts off the inflow of water into a washing machine when a preselected water level has been reached. An impervious bellows is mounted within an accumulator in the washing machine, and communicates by means of a pneumatic tube with a pressure switch which controls a water inlet valve. The pressure switch is pre-set by an operator to correspond to a desired water level for the wash load, and influent water into the washing machine defle...