Quotables
"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 7594683 | Pipe elevator with rotating door An elevator comprising a body having a longitudinal axis therethrough. The body is operable to at least partially surround and support a tubular member aligned with the longitudinal axis. The body also has a longitudinal opening that is sized so as to allow the tubu... | 09/29/2009 |
| 7303021 | Wellbore rig elevator systems An elevator having, in at least certain aspects, an elevator body with two opposed ends and an elevator opening in the body, a door pivotably mounted to the body for selectively closing off the elevator opening, a lock bar on the elevator body, door latch apparatus ... | 12/04/2007 |
| 6915868 | Elevator apparatus and method for running well bore tubing An elevator apparatus for manipulating well bore tubing includes a circular body having a top and a central cavity around a body axis. The cavity has a diameter allowing the collar portion of the tubing to pass longitudinally therethrough. A plurality of cavity rest... | 07/12/2005 |
| 6789827 | Multifunction drum lifter and wrench A multifunction drum lifter includes a saddle and a plurality of lift arms pivotally connected to the saddle. Each arm includes a working end having at least one lift finger for engaging the chime of a drum to lift the drum. Preferably the lift arms are three in num... | 09/14/2004 |
| 5979022 | T-bar wireline clamp A heavy duty clamp for cables or wires, and the like, said clamp having increased strength and resistance to distortion or breakage. Two overlying clamp plates, or segments, are held against relative movement by one of the plates having a shoulder member ... | 11/09/1999 |
| 5961379 | Tool grinding machine A tool grinding machine which can grind the cutting edge of a punch without disassembling the punch body from the punch assembly and further can grind the cutting edge of the upper surface shoulder portion of the die. Further, the punch and die of various... | 10/05/1999 |
| 5954378 | Lifting tool A lifting tool comprises a lifting plate having a bifurcation. A pair of guide rods extend upwardly from the lifting plate. A keeper plate is slidable on the guide rods toward and away from the lifting plate. The keeper plate has centering mechanism and t... | 09/21/1999 |
| 5033784 | Mold balancing lifting bar A method to facilitate the movement of heavy molds for use in an injection molding machine employing load bearing lugs on each mold half and a lifting bar which receives and supports the lugs and mold. In the method, the lifting tool is slid over the lugs... | 07/23/1991 |
| 4893860 | Device for gripping and suspending drill pipe stand According to the invention, the device comprises clamping elements hinged in a housing provided with a cut-out and a control system formed by a group of levers which are connected with a hoisting line. Besides, one of the levers is hinged to the housing a... | 01/16/1990 |
| 4483564 | Oil well sucker rod safety block A fail-safe knock-off block for use during the repair or servicing of oil well surface pumping equipment involving a longitudinally slotted pipe capped at each end by top and bottom pipe segments which are held in place concentric to the slotted pipe by a... | 11/20/1984 |
| 4419785 | Bolt eyelet with bolt-engaging shoulder for electrical transmission lines The invention deals with a novel bolt eyelet design for use on high voltage transmission lines used by utilities. The eyelet incorporates a shoulder in the base that automatically centers the installed bolt when the latter is tightened.... | 12/13/1983 |
| 4365925 | Manhole cover lifter A manhole cover lifter comprising an elongate inclined lever with a handle at its upper end and a fastener at its lower end for attaching to the cover of a manhole; a depending strut intermediate the ends of the lever and a pair of wheels mounted at the l... | 12/28/1982 |
| 4188141 | Butt hook for a logging choker line A butt hook having a main body defining a laterally open cavity within which is received a choker line ferrule. A sleeve on the main body is positionable therealong to open and close the cavity for release and retention of the ferrule. A winchline receivi... | 02/12/1980 |
| 4058339 | Pivotal latch for a sucker rod puller A pivotal latch for a sucker rod puller is designed to be placed on a cross-member separating a first chamber being receptive of the collar of the sucker rod and a second chamber containing the latch. Slideably disposed over the main body containing the f... | 11/15/1977 |
| 4032183 | Pipe elevator Disclosed is an elevator for handling pipe with enlarged ends by gripping the end of the pipe with the enlargement between two hinged arm pieces. In the specific embodiment shown, one arm piece fits into the end of the pipe with enlarged end in the form o... | 06/28/1977 |
| 3978607 | Snail snare A snail snare comprising a disc located beneath a cover member, the cover member including an outer annular wall having a plurality of openings therein permitting snails to move beneath the cover and gain access to pelletized poison located on the disc, a... | 09/07/1976 |
