William Cole Mercer
Engineering at Yorktown St, Houston, TX

License number
Louisiana EI.0018316
Issued Date
Jun 2, 1998
Category
Civil Engineer
Address
Address
2412 Yorktown St APT 270, Houston, TX 77056

Professional information

William Mercer Photo 1

High-Speed Transplanter For Seedlings Attached To Tape

US Patent:
6305303, Oct 23, 2001
Filed:
May 7, 1999
Appl. No.:
9/307500
Inventors:
Malcolm E. Wright - Baton Rouge LA
Leslie L. Davis - Prairieville LA
Brent C. Gros - Slidell LA
Stephen C. LeJeune - Gonzales LA
William C. Mercer - Houston TX
Assignee:
Board of Supervisors of Louisana State University and Agriculture and
Mechnical College - Baton Rouge LA
International Classification:
A01C 1102
US Classification:
111100
Abstract:
An automated transplanter has been designed for seedlings previously loaded and correctly spaced on a low tensile-strength, biodegradable tape wound on a spool. The transplanter design allowed for rapid planting of the tape with the attached seedlings while minimizing the tension placed on the tape. The design linked the unspooling of the tape directly to the ground speed of the tractor and provides for an anti-backlash mechanism to prevent the spool from free-wheeling when the tractor speed slowed quickly. Using this design, synthetic seedlings attached to a low tensile-strength tape were successfully planted at speeds up to 7. 5 mph.


William Mercer Photo 2

Pipe Welding Apparatus

US Patent:
4331278, May 25, 1982
Filed:
Oct 24, 1979
Appl. No.:
6/087778
Inventors:
Charles R. Sherer - Houston TX
William R. Mercer - Houston TX
International Classification:
B23K 3702
US Classification:
228 29
Abstract:
Apparatus comprising a frame disposable in spaced relationship about a pipe uses a ring mounted thereon for carrying a welding head around the pipe. A welding torch is provided on the head for movement into the welding area to form a weld about the pipe during rotation of the ring.