Search patents:
Folding portable gin pole
Folding portable gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US2557192
June l9, 1951 G, D, ESTER 2,557,192. FOLDING PORTABLE GIN POLE Filed Feb. '7, 1949 /4 Y INVENTOR. 49 GROVER 0. LE/STER 4o I BY Patented June F3, ...
Portable gin pole
Portable gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US2128712
j A. J. NEFF PORTABLE GIN POLE Aug. 30, 1938. Filed Sept. 22, 1936 6 Sheets- Sheet 1 Aug. 30, 1938. A, J NEFF 2,128,712. ( PORTABLE GIN POLE Filed ...
Portable gin pole structure
Portable gin pole structure
Filed: January 1st, 1970 [Granted]
Patent Number: US1828973
1931- G. D. LEISTER PORTABLE GIN POLE STRUCTURE Filed May 1. 1929 IVIENTOR BY W W A TTORNE Y Patent d Oct. 27, 1931 ATENT OFFICE onovnnn .
Portable oil well mast with folding gin pole
Portable oil well mast with folding gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US2787344
April 2, 1957 H. J. WOOLSLAYER ETAL 2,787,344. PORTABLE OIL WELL MAST WITH FOLDING GIN POLE Filed Feb. 10, 1954 3 Sheets-Sheet 1 5 R k m K N ...
Oil-well utility gin pole
Oil-well utility gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US1632935
June 21, 1927 ,935 C. E. T U RNER ET AL OIL WELL UTILITY GIN POLE Filed ... The objects of our invention are as follows: First, to provide a'portable. gin pole.
Portable oil well derrick
Portable oil well derrick
Filed: January 1st, 1970 [Granted]
Patent Number: US2656023
3 is an enlarged fragmentary rear view of the upper portion of the gin pole and the ... A splice connection for a portable oil well derrick that has a gin pole and a ...
Oil well mast gin pole
Oil well mast gin pole
Filed: January 1st, 1970 [Granted]
Patent Number: US2780325
Before the mast can be raised, the gin pole has to be raised because the cable that pulls up .... Sep 12, 1946, May 31, 1949, Moore Dewey R, Portable derrick.
Portable oil well derrick
Portable oil well derrick
Filed: January 1st, 1970 [Granted]
Patent Number: US2863530
(Cl. 189-l1) This invention relates to portable oil well derricks, and more particularly to those that are swung up to upright position with the help of a gin pole.