A process and apparatus for preventing melanosis in shellfish which are to be preserved for freezing are disclosed in which shellfish in a container are covered with an aqueous solution of an innocuous acid, such as citric acid, and the interior of the container is pressurized with carbon dioxide at a predetermined pressure and for a predetermined time. As a result, carbonic anhydride and citric acid penetrate the bodies of the shellfish to preserve the fish and prevent melanosis.

In a dispensing nozzle used for dispensing solely one or the other of two liquid fuel components, and also for dispensing various blends of the two components, contamination of one component by the other, when dispensing solely said one component, is prevented by utilizing a manually-controllable shut-off valve for the other component, in the nozzle body. A detachable nozzle reducing extension, which must be used in order to dispense solely said one component into specially-equipped automobiles ...

A snake bite preventing device comprises thigh protecting material adapted to be removably affixed to the thigh of the wearer. Leg protecting material is adapted to be removably affixed to the leg of the wearer. Foot protecting material is adapted to be removably affixed to the foot of the wearer. Flexible material is affixed to and extends between the thigh proteting material and the leg protecting material.

A method and apparatus for preventing displacement of molds during casting is described. The mold securing device has a plurality of spaced horizontally disposed rollers which define a horizontal path along which a mold may progress during the casting process. Spaced vertically disposed rollers are provided on each side of at least a portion of the path, the vertical and horizontal rollers together defining a space through which the mold passes as it moves along the path. A plurality of vertical...

A noise preventing shock absorber adapted for silently absorbing the sound due to noise sources, as when moving machine parts engage mating surfaces and decelerate to zero velocity within a short travel distance or stroke. The shock absorber includes a unitary resilient member having an annular force-receiving surface on the lower end thereof and a force-receiving surface on the upper end thereof which is disposed radially within and axially spaced apart from the lower force-receiving surface, a...

An improved backflow preventing valve having an inlet passage opening to an intermediate chamber via an improved inlet check valve with the intermediate chamber opening to an outlet passage via an improved outlet check valve. A diaphragm chamber communicates with the intermediate chamber having a diaphragm therein dividing the diaphragm chamber into an inlet pressure portion opening into the inlet passage and an intermediate pressure portion opening to the intermediate chamber. An exhaust passag...

A muffler-separator connected to the exhaust pipe of an engine includes a tubular elongated casing divided into chambers by baffles extended alternately from opposite walls of the casing leaving a space at the free edge of each baffle for the passage of products of combustion from chamber to chamber; the baffles are parallel and are inclined toward the intake end of the casing; the volume of the chamber at the intake end is about three times the combined volume of all the combustion chambers of ...

A device for preventing a tape cartridge from springing out from the cartridge entryway of a tape player upon cartridge ejection operation. This device includes a sliding member having one end provided with a roller projection into the cartridge entryway. The sliding member is adapted to slide on an inclined face so that the amount of the roller projecting into the cartridge entryway will increase as the roller and sliding member moves toward the insertion opening of the cartridge entryway, wher...

Method and apparatus are disclosed for preventing sores on animals such as horses, caused by saddles and the like. A pad is constructed from a synthetic pile fabric by attaching together two portions of the fabric in a back-to-back relationship. The pad is placed between a harness device and the animal to permit limited relative movements between the device and the animal to substantially reduce frictional rubbing movements against the animal's hide, while permitting air circulation between the ...

A reflex camera having a film chamber for supporting a film cassette having a film unit therein in position for exposure and a motor driven spread roller assembly mounted in position to receive an exposed film unit therebetween as it is being advanced from the film cassette and spread a processing fluid across an element of the film unit to initiate the formation of a visible image therein. During viewing of the subject through the camera's objective, an opaque shade or curtain having an exposur...