Abstract: The present invention relates to an improved spacer assembly for use in an electrostatic precipitator. The electrostatic precipitator collects solid particles carried by a flue gas from a source of combustion. The precipitator includes a plurality of spaced parallel plates for collecting the above mentioned particles by electrostatic attraction of the particles to the plates. Each of the plates has a plurality of stiffeners extending outward from the respective plate. Each stiffener is opposite a like stiffener on the opposed plate. A plurality of spacer assemblies is positioned between opposed plates to hold the plates in a flat attitude and to maintain adjacent surfaces of opposed plates equidistantly spaced from one another. Each of the spacer assemblies includes a spacer having opposite ends abutting a pair of opposed parallel plates adjacent to the respective stiffeners of the plates. An upright is connected to the spacer.

Abstract: A rapper for use in vibrating parts of an electrostatic precipitator by utilizing an impact force. An anvil is connected to a part of an electrostatic precipitator, such as, a section of electrodes either discharge electrodes or collecting plates or electrodes. A striker is engageable with an impact force on the anvil for vibrating the anvil as a result of the striker applying an impact force to the anvil. The vibration of the anvil is transmitted to the part. An elongated connector has one end connected to the striker. Crank means is connected to the elongated connector for raising the striker above the anvil and allowing the striker to drop into impact engagement with the anvil vibrating the anvil and the part of the electrostatic precipitator.

Abstract: This invention relates to an adjustable buttress for use in an electrostatic precipitator for spacing an end plate from a portion of a precipitator housing. The adjustable buttress is selectively positionable between a portion of an electrostatic precipitator housing and an end plate which is on one end of a plurality of plates in the electrostatic precipitator. The adjustable buttress engages the end plate for positioning the end plate a selected distance from the housing. The adjustable buttress includes an axle. A pair of arms is pivotally mounted on the axle. A rail is connected to each of the arms, and a buttress contact is mounted on each of the rails. The buttress contacts define a contact plane. A positioning device is connected to the rails for selectively moving the rails relative to each other to determine selectively the distance between the rails and thereby the distance between the axle and the contact plane for selectively holding the end plate a selected distance from the housing.

Abstract: The present invention relates to an improved construction for an electrostatic precipitator. An electrostatic precipitator collects solid particles carried by a flue gas from a source of combustion. The precipitator includes a plurality of spaced parallel plates for collecting solid particles from a flue gas by electrostatic attraction of the solid particles to the plates. A second plurality of elongated electrodes is positioned among the plates. Each of the electrodes is mounted between a pair of adjacent plates. A third plurality of identical spacers is positioned between adjacent plates. The spacers are pivotally mounted on each of one of a pair of adjacent plates. The spacers are positioned substantially parallel to the respective plate so that the plates may be handled with ease during installation.

Abstract: The present invention relates to an improved construction for an electrostatic precipitator having ladder bar spacers. The electrostatic precipitator collects solid particles carried by a flue gas from a source of combustion. The precipitator includes a plurality of spaced plates for collecting solid particles from the flue gas by electrostatic attraction of the solid particles to the plates. A second plurality of elongated electrodes is positioned among the plates. Each of the electrodes is mounted between a pair of adjacent plates. Each of the electrodes is parallel to the other electrodes and is parallel to the plates. A third plurality of ladder bars is positioned between adjacent plates to hold the plates in a flat attitude and to maintain adjacent surfaces of adjacent plates substantially equidistantly spaced from one another. Each of the ladder bars has a connector bar secured to one of the pair of adjacent surfaces. Each of the ladder bars has a fourth plurality of holder bars.

Abstract: The present invention relates to an improved construction for an electrostatic precipitator. The electrostatic precipitator collects solid particles carried by a flue gas from a source of combustion. The precipitator includes a plurality of spaced plates for collecting solid particles from the flue gas by electrostatic attraction of the solid particles to the plates. A plurality of elongated electrodes is positioned among the plates. Each of the electrodes is mounted between a pair of adjacent plates. Each of the electrodes is parallel to the other electrodes and is parallel to the plates. A plurality of identical spacers is positioned between adjacent plates to hold the plates in a flat attitude and to maintain adjacent surfaces of adjacent plates equidistantly spaced from one another. Each of the spacers is an elongated single unitary member and has one end fixed to a surface of one of a pair of adjacent surfaces of the plates and the other end abutting the other of the adjacent surfaces.

Abstract: A piece part, such as a flat metal contact spring (12), is mounted between two plastic details (11 and 25), so that an end portion of the spring 12 projects from the mounting details. One of the details, such as a base member 11, has a cavity 17 within which the spring is placed so that a mounting section (12A) fits within the cavity. The second detail, such as a thermoplastic locking insert 25, includes a finger 25B adapted to fit in the cavity adjacent to the spring section (12A). The insert is provided with pointed energy directors (30 and 31) arranged so that the members can be heated and compressed together, and the directors melt to weld the parts together. The insert and/or the base member is formed with slots (33) so positioned that portions of the molten plastic are forced to flow into the slots during the process so as to encapsulate the mounting section of the spring or other piece part in the plastic.

Abstract: The present invention relates to an improved construction for an electrostatic precipitator having ladder bar spacers. The electrostatic precipitator collects solid particles carried by a flue gas from a source of combustion. The precipitator includes a plurality of spaced plates for collecting solid particles from the flue gas by electrostatic attraction of the solid particles to the plates. A second plurality of elongated electrodes is positioned among the plates. Each of the electrodes is mounted between a pair of adjacent plates. Each of the electrodes is parallel to the other electrodes and is parallel to the plates. A third plurality of ladder bars is positioned between adjacent plates to hold the plates in a flat attitude and to maintain adjacent surfaces of adjacent plates substantially equidistantly spaced from one another. Each of the ladder bars has a connector bar secured to one of the pair of adjacent surfaces. Each of the ladder bars has a fourth plurality of holder bars.