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| RAMPP safety pattern drive clamps, Figure No. 390 answer the need for a safe and efficient tool for the driving of pipe through drift type formations. This clamp is safe to use, whether you are driving 6” or 30”, and will stand up under the hardest blows. A set of (4) slips is utilized. To start the first joint of pipe, we can furnish round slips to grip the body of the stem or drill bar. Light driving can only be done with the round slips. After the first joint is in or clearance is obtained for the tool bit, then the flat slips for the top squares are used. When drilling or cleaning out is necessary, remove the nuts and rubbers, pick up the tools a few inches and take out the slips. Replace the auxiliary ring over the bolts and proceed to drill. The body will rest on top of the drive head. There are no projections or sharp corners to foul the drilling cable. When driving is resumed, insert the slips, replace the auxiliary ring on top of the slips, drop on the rubbers, washers and tighten the nuts with the wrench furnished. It is NOT necessary to remove these clamps from he string of tools after each driving operation. Leave them on the drive head. When the tools are removed from the pipe, they will pick up the clamps and be out of the way when another joint is set up. |
Light Pattern (Heavy pattern has 6 bolts)
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The heavy pattern and the light pattern (shown) are constructed almost alike. The metal parts are all forged steel and heat treated. There are no castings. This clamp eliminates all the delay, expense and danger common in the use of the two piece bolted type. The clamp remains tight eliminating re-tightening of large bolts high on a mast. The picture above represents the assembled clamp, whether light or heavy pattern, fastened to the top squares of the stem or drill bar. It is resting on a drive head inserted in the collar.
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When ordering, please specify the following:
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Pin and Square size
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Stem or Drill Bar diameter
Drive Clamp - Parts
Parts for heavy pattern
Parts for light pattern
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