WILLIAM W RAWSTRON
Engineering in Northborough, MA
License number
Massachusetts 13293
Issued Date
Aug 11, 1960
Expiration Date
Jun 30, 2018
Type
Mechanical Engineer
Address
Address
Northborough, MA 01532
Professional information
Tank Bottom Internal Valve Housing
US Patent:
4016907, Apr 12, 1977
Filed:
Oct 31, 1975
Appl. No.:
5/627692
Inventors:
William W. Rawstron - Northboro MA
Assignee:
Jamesbury Corporation - Worcester MA
International Classification:
F16L 5500, F16K 122
US Classification:
137797
Abstract:
Disclosed is a tank bottom internal valve housing. A low profile valve housing with a valve such as a butterfly valve and a means for opening and closing the valve is assembled to a saddle on the tank bottom by a number of bolts located around the periphery of the valve housing and engaging in threaded blind holes in the tank saddle. A discharge nozzle is mounted on the lower face of the valve housing in such a way that the discharge nozzle mounting can be sheared away from the rest of the assembly during, for instance, an accident without affecting the integrity of the valve housing itself. This can be accomplished, on one hand, by using the same bolts for common mounting of the discharge nozzle, valve assembly and saddle with the bolts having a grooved portion between the valve assembly and discharge nozzle and/or a "keying effect" provided by a detent or protrusion on one of the parts consisting of the saddle and valve assembly and a mating recess for accommodating the detent is provided on the other of the parts. Another alternative of the invention contemplates utilizing bolts of smaller diameter to mount the discharge nozzle to the valve assembly than are used to mount the valve assembly to the tank saddle.
Butterfly Valve
US Patent:
4817916, Apr 4, 1989
Filed:
Nov 20, 1987
Appl. No.:
7/123417
Inventors:
William W. Rawstron - Northboro MA
Assignee:
Jamesbury Corporation - Worcester MA
International Classification:
F16K 122
US Classification:
251163
Abstract:
A butterfly valve wherein at least one cam is mounted on the valve shaft and located in a cam chamber associated with the valve disc. The cam cooperates with the cam chamber to rotate the valve disc between an open position and a closed position in alignment with and spaced from the valve seat at which point further rotation of the disc is prevented by stop means. The cam then further cooperates with the cam chamber to force the valve disc linearly into a seated position in engagement with the valve seat. Belleville springs engage the cam and force the valve disc away from engagement with the valve seat. A normal 90. degree. valve actuator may be used.