1
John R Bower, Charles W Hammond: Sonic apparatus and method for detecting the presence of a gaseous substance in a closed space. The Babcock & Wilcox Company, Robert J Edwards, James C Simmons, D Neil LaHaye, March 11, 1986: US04574615 (110 worldwide citation)

A method and apparatus for detecting the presence of a gaseous substance within a space bounded by an enclosure utilizes the fact that sound is not transmitted through a vacuum and is transmitted through the material of the enclosure. A sonic wave transmitter and a sonic wave receiver are engaged wi ...


2
Charles W Hammond: Sootblower apparatus. The Babcock & Wilcox Company, Harness Dickey & Pierce, January 8, 1985: US04492187 (26 worldwide citation)

A sootblower of the long retracting variety including a drive system which simultaneously rotates the lance tube as it is inserted and withdrawn from the boiler. A variable speed drive is employed to modulate the rotational speed of the lance tube in accordance with the projected distance of the lan ...


3
Charles W Hammond: Method and apparatus for removing deposits from highly heated surfaces. The Babcock & Wilcox Company, Harness Dickey & Pierce, March 12, 1985: US04503811 (21 worldwide citation)

A method and apparatus for deslagging boilers and the like while steaming, wherein a quenching-type stream of water is first applied to the outer surface of the hot slag to induce the formation of fissures by embrittlement and contraction of the slag and thereafter while the fissures are still prese ...


4
John E Nelson, Charles W Hammond, Rolland E Huston, Michael R Helton: Pulsed liquid jet-type cleaning of highly heated surfaces. The Babcock & Wilcox Company, Harness Dickey & Pierce, December 27, 1983: US04422882 (19 worldwide citation)

A method and apparatus for removing adherent deposits from high temperature surfaces such as the fire sides of the tubes of boilers while steaming is disclosed as employing a sootblower to project a moving pulsed jet of liquid against the deposits. The peak impact pressure of the jet is increased by ...


5
Charles W Hammond: Roller supporting means for long retracting sootblowers. The Babcock & Wilcox Company, Harness Dickey & Pierce, March 8, 1983: US04375710 (9 worldwide citation)

Roller-type supporting means is disclosed herein for the lance tube of a long retracting sootblower. An assembly of four rollers is mounted in a cradle structure rockable about an axis transverse to the beam of the sootblower and also swingable about a vertical axis radial to the lance tube axis. Th ...


6
Dean C Ackerman, Charles W Hammond: Roller supporting means for long retracting soot blowers. The Babcock & Wilcox Company, Harness Dickey & Pierce, November 30, 1982: US04360945 (4 worldwide citation)

Roller supporting means for the lance tube of a long travel retracting soot blower includes a pair of castering-type roller assemblies having their castering axes non-vertical. Each roller assembly is counterweighted to such extent as to substantially statically balance the assembly about its caster ...


7
Charles W Hammond, John Ross Bower: Sonic apparatus and method for detecting presence of gaseous substance in closed space. Babcock &Amp Wilcox Co, WU ZENGYONG, March 4, 1987: CN85106182

This invention utilizes the fact that sound can not propagate in a vacuum but can propagate in shell material in order to offer a method and apparatus for detecting if there exists any gaseous element inside a closed space encircled by a shell. Both the sound transmitter and the sound receiver are c ...