Abstract: A base pad for supporting heavy, vibrating machinery with minimal environmental pollution, the pad including a peripheral frame of rigid beams, a grid of reenforcing rods extending across the interior of the peripheral frame between the beams, and a cementitious filler within the peripheral frame. Flanged channel beams extend across the peripheral frame in spaced pairs and form a series of spaced anchor slots opening upwardly through the cementitious material, and also form liquid drains beneath the slots. The drains communicate through openings through the beams with aligned discharge spouts secured to the beams. A plurality of intercommunicating, peripheral, upwardly opening V-gutters are disposed in the cementitious filler adjacent the peripheral frame beams, and are connected to drain liquid into the liquid drains.

Abstract: A muffler for muffling engine operating sounds and including a cylindrical shell closed at opposite ends by double-walled closure caps. The space within the shell is partitioned into three axially contiguous chambers. A gas charging pipe projects through one end of the shell and axially within the shell, and has two pairs of facing discharge elbows for discharging gas from the charging pipe at locations in the first of the chambers. A first pair of gas transfer pipes extends from the first chamber into the central chamber to points of opposed gas discharge. A second pair of gas transfer pipes extends from the central chamber into the third or discharge chamber, and from this location, the gas passes out of the muffler via a discharge pipe.

Abstract: A base pad for supporting heavy, vibrating machinery with minimal environmental pollution, the pad including a peripheral frame of rigid beams, a grid of reenforcing rods extending across the interior of the peripheral frame between the beams, and a cementitious filler within the peripheral frame. Flanged channel beams extend across the peripheral frame in spaced pairs and form a series of spaced anchor slots opening upwardly through the cementitious material, and also form liquid drains beneath the slots. The drains communicate through openings through the beams with aligned discharge spouts secured to the beams. A plurality of intercommunicating, peripheral, unwardly opening V-gutters are disposed in the cementitious filler adjacent the peripheral frame beams, and are connected to drain liquid into the liquid drains.

Abstract: A muffler for muffling engine operating sound and including a double-walled cylindrical shell closed at opposite ends by double-walled closure caps. The space between the shell walls is filled with sound-absorbing solid particles. The shell is partitioned into three axially contiguous chambers. A gas charging pipe projects through one closure cap and axially within the shell, and has two pairs of facing discharge elbows for discharging gas from the charging pipe at locations in the first chamber. A first pair of gas transfer pipes extends from the first chamber into the central chamber to points of opposed gas discharge. A second pair of gas transfer pipes extends from the central chamber into the third or discharge chamber, and from this location, the gas passes out of the muffler via a discharge pipe.