Abstract: A gas meter in which the index and register thereof is directly housed within the main gas chamber of the meter itself. An integrally molded plastic cover which is visually transparent provides the means for mounting the index and in part forms the gas chamber. The index register is visible through the cover.

Abstract: A vessel for use with a closure member of type having a telltale therein for tamper indication and movable in first and second opposite senses relative to said vessel for joinder and removal. The vessel comprises the customary neck terminating in a vessel mouth and defining surface extent circumscribing the mouth and inclusive of vessel sealing surface and the neck has the typical threads for closure member securing thereon. In accordance with the invention, the vessel surface extent is adapted for engaging the telltale and is configured to effect first and second different engagements therewith respectively in the course of the first and second sense movements. With such facility, the vessel permits the telltale to be moved into closure relation with the sealing surface and to be selectively positively restrained from movement relative to the mouth in the initial phase of the second closure member movement.

Abstract: A tank cap for closing the filling port of a fuel or lubricating oil tank of a power-driven portable machine such as a chain saw. The tank cap is made of a transparent plastic material and is provided with a protrusion protruding outwardly from the main surface of the tank cap. The cavity formed in the protrusion is communicated with the tank filling port so that the fuel or lubricating oil is allowed to come into this cavity. Consequently, the fuel or lubricating oil level can be visually checked from all directions around the tank cap.

Abstract: A puzzle assembly having a plurality of pieces which are identical and which interfit without interlocking are assembled in a recess of the base of a container and the container is closed by a cover hinged to the base. When the cover is closed, the puzzle pieces are disposed between top and bottom walls formed respectively on the cover and the base. The pieces are made of a resiliently yieldable material and their normal thickness is greater than the spacing between the walls when the cover is closed so that the pieces are clamped between the walls and are held against sliding even though only some of the pieces have been assembled. The puzzle has a design on both sides and the top and bottom walls are transparent so that both designs may be viewed with the cover closed.

Abstract: A protective cover arrangement for a computer or a similar machine which has a panel provided with an opening through which access may be had to switches or similar control or actuating devices, this opening being surrounded at least along a part of its periphery by an inwardly extending flange, includes a cover and a clip member on which the cover is mounted for pivoting and which is clampingly mounted on the flange. The clip member includes two arms which clampingly confine the flange between themselves. One of the arms is provided on a clip component, while the other arm is a portion of a hinge component that is mounted on the clip component for adjustment of its position relative thereto, by two screws passing through orifices at least some of which are elongated to provide for the adjustment. Another hinge component is connected to the cover and is pivotably mounted on the first-mentioned hinge component by a pivot pin.

Abstract: There is provided a tamper evident container seal comprising a normally transparent polymer film which can be rendered translucent by stretching and transparent by relaxing. There is also provided a polymer film useful as a seal of the same type of film which bears an image which is not readily visible when the film is relaxed, but becomes readily visible when the film is stretched.

Abstract: A frypan lid comprises an upper transparent plastic cover and a lower heat resistant plastic collar fixedly connected to the transparent cover and adapted to fit on a rim of the frying pan. The collar acts as a heat insulating body between the cover and the frying pan so as to prevent heat generated by the frying pan during use from adversely affecting the cover. The frypan lid prevents grease or the like from spattering out over the area immediately surrounding the pan, while at the same time enabling one to view the contents of the pan. Since both the cover and collar are made of plastics, the lid is also light-weight and practically non-breakable.

Abstract: An amusement device consists of a box-like structure having a transparent lid which may be opened through the proper positioning of a plurality of tumblers contained on an exterior face of the structure. The transparent lid is of a spring biased construction to facilitate its opening once the proper combination on the tumblers has been set, and a troll-like figurine is releaseable from an interior portion of the structure upon an opening of the lid. If desired, the troll may be provided with an award deliverable to the bearer. Further, the combination required to open the structure is changeable through the use of selectively positionable gears associated with the tumblers.

Abstract: A pinball machine having multi-level playfields with a transparent window mounted in at least an upper level playfield to allow observation therethrough to a lower level playfield. The window is mounted on a ledge in an opening in the upper level playfield with compressible rings and screws extending through the window, rings and ledge to compress said rings until the window is in the same plane as said playfield.

Abstract: A machine for mixing and cooling batches of dry powder ingredients and water comprising, a horizontal mixing cylinder open at one end and having a rotary mixer in the cylinder. Refrigerating mechanism is provided for cooling the walls of the cylinder and for maintaining the mixing cylinder temperature in a range below 45.degree. F. and above 32.degree. F., a door for closing said one end of the cylinder. The mixing cylinder has a dry powder ingredient inlet passage extending through the cylindrical side wall at the top of the cylinder at a location spaced from said one end. The door has a mix dispensing outlet communicating with the lower portion of the cylinder and a dispensing valve for controlling flow through the dispensing outlet and the door has a water inlet communicating with the upper portion of the cylinder and a funnel at the outside of the door extending upwardly to a level above the cylinder.

Abstract: The invention is related to a reservoir tank receiving liquid therein and having a peep hole in a side wall for visually inspecting the interior of the tank. The peep hole is formed by a cup-shaped member having a transparent bottom wall, a cylindrical side wall sealingly fitted into an opening formed in the side wall of the reservoir tank, and a plurality of retaining portions formed adjacent the open end portion of the cup-shaped member for engagement with the peripheral edge of the opening.

Abstract: A soft, flexible cover which is adapted to be attached over the open top of a container has a transparent section for viewing the contents of a container with which the cover is used, a filter section for removing entrained matter from air entering the container, and a tubular section for sealable attachment to a suction tube extending therethrough into the container.

Abstract: The center portion of the lid for a high speed food processing apparatus is flexible, preferably transparent and is supported by a rigid lid support member. The outer portion of the lid is stiff so that the center portion acts as a spring when compressed by the support member onto the edge of the bowl of the food processing apparatus.

Abstract: A screw-on child resistant double cap closure in which the inner screw cap has printing and coloration on the exterior surface of its crown and the cover is transparent. The cover and the screw cap include two halves of a selectively engagable, normally disengaged, torque coupling.

Abstract: A container for prepackaging materials, as for example silver alloy and mercury for dental amalgam, which must be kept separate until just prior to combination and use is disclosed which comprises two chambers. During storage of the materials, the two chambers are separated by a barrier to prevent mixing of the ingredients therein. Combination of the ingredients is effected by twisting the top portion of the container to align a conduit therein with an opening in the barrier between the two chambers. After the material in the upper chamber flows into the lower chamber, the top portion is twisted back to close off the opening and the materials are mixed together by agitating the container.

Abstract: A sight glass assembly comprising a housing having an opening therethrough, the opening having an enlarged section providing a shoulder, a face plate having an opening registered with the opening in the housing, mounted on the housing in opposed relation to the shoulder, a lens disposed in the enlarged section of the opening in the housing and interposed between the shoulder and the face plate, a resilient packing disposed in the enlarged section of the opening in the housing, between the lens and the housing structure, said face plate having a flange portion projecting into the enlarged section of said housing opening and engaging said resilient packing, and means for securing said face plate to said housing to apply a compressive force on the packing, causing the packing to expand laterally to provide a compressive force about the periphery of the lens.