A leash guide assembly for confining the movement of a tethered animal to a limited area, but enabling controlled movement within the area along the guide assembly in opposite directions. A plurality of stationary retaining blocks provide a mount for an endless cable which defines the boundaries of the limited area. A traveler member having a hole therethrough is slidably secured along the cable and has a flange to which the tethered animal is secured. Each of the retaining blocks includes a pai...

Apparatus including a horizontally disposed line or the like supported a distance above ground or floor level and having two or more angularly related sections, as well as a shuttle device moveable along the length thereof past the support points for the adjoining sections thereof. The shuttle may be in the form of a tubular element substantially encircling the line and having a suitable side slot enabling the same to move past components of a support point, as well as end surfaces shaped to fac...

A glazing unit for removing mold separation marks from press molded glassware includes a refractory oven, sized to snugly surround a vertical stack of ware to be treated. The oven is open at the bottom and at the top to permit movement of the ware therethrough. Tangentially arranged inclined nozzles at the upper end of the oven create a downwardly directed swirling blanket of hot gases around the periphery of the stack of ware and these gases exit through passageways at the bottom of the oven. A...

A development system for an electrophotographic machine in which uncharged toner is stored in a housing having an opening. A rotatable dispensing roll is mounted in the housing opening. An overhung metering blade mounted at the housing opening meters a layer of uncharged toner onto the dispensing roll. An ion or electron charging device places a charge on the toner layer residing on the dispensing roll prior to the transportation thereof by the dispensing roll to a captive magnetic brush. The ma...

The present invention relates to a denture adhesive composition comprising mixed salts of an alkyl vinyl ether-maleic acid or anhydride copolymer and/or terpolymer with isobutylene wherein the mixed salt contains a cationic salt function comprising at least about 22.5% calcium cations, from about 15% to about 25% of zinc cations, of the total initial carboxyl groups reacted, the mixed salt containing from about 36% to about 50% free acid component. In addition the present invention relates to de...

A developing device is provided with: a developing roller for performing an electro-photography on a photosensitive body by using charged toners; a supplying roller for supplying the toners to the developing roller, the supplying roller being pushed against the developing roller so that an outer circumference of the supplying roller be deformed in a radius direction of the supplying roller; and a rotating device for rotating the supplying roller and the developing roller in directions opposite t...

A wellbore packer and slip combination for production tubing and the like comprises a plurality of slip elements that are caged together around the periphery of a cylindrical mandrel. An axially displaced actuator simultaneously engages all of the elements to ramp one end of all elements against a casing wall. After the one end of the slip and packer unit is set, further displacement of the actuator expands the other end of the elements against the casing wall. The packer and slip assembly may b...

A combination arm and leg exercising apparatus has a base member adapted to rest upon a floor and a support frame extending upwardly therefrom. The support frame has a pair of foot pedals pivotally attached thereto at one respective end of each foot pedal. A cross member attached to the upper end of the support frame has a pair of independently articulated pivotal arm handles rotatably attached to the cross-member. A pair of adjustable compressed spring tension devices are attached respectively ...

A system for controlling the supply of fuel to the burners of a glassware burn-off machine which burns off the moils from hollow glass articles. It includes means for separately controlling the supply of combustible gas and oxygen to separate superimposed cavities of double-duty burners of such a machine in which the one cavity produces a melting flame for the moil connection and the other cavity produces a more intense flame for completely severing that connection.

A rear projection screen which eliminates speckle by only linear diffuser surface motion. One of a pair of closely spaced plates of the rear projection screen is maintained fixed while the other plate is driven such that it has a linear motion relative to the fixed plate. The plates are optically transparent and have their facing surfaces etched or coated to provide adjacent diffusing surfaces. The driven screen is supported by L-shaped spring metal straps thereby providing a strong plate suppor...