Hermetic type rotary compressor with silencer means

A horizontal hermetic type rotary compressor to be used in a refrigerator, air conditioner, or the like comprises an outer hermetic casing provided at both ends with suction and discharge pipes for a gaseous refrigerant, a compression device contained in the casing and a motor operatively connected to the compression device in the casing. The compression device has a cylinder body on both sides of which main and sub-bearings are attached and a silencer is provided for the cylinder body. The silencer comprises a plurality of silencer chambers formed in casting in the cylinder body at portions outside of the peripheries of the bearings and communicated with each other and a pair of cover plates secured to the cylinder body by tubular rivets so as to hermetically seal openings of the silencer chambers on both sides of the cylinder body.