![]() Since the weight of the house will be divided by all the bottle jacks, 12-ton jacks should be sufficient for most houses. If you’re leveling a pier-and-beam house, you’ll need to get under the house with up to four bottle jacks for a small house, or more for a larger one. For example, if you need a bottle jack for a 40,000-pound dump truck, 40,000 divided by 2,000 equals 20 tons, so you will need a 20-ton bottle jack to lift that truck. ![]() Since many items are measured in pounds, you will need to know the equivalence. The capacity of bottle jacks is always given in tons. All hydraulic jacks since then, including bottle jacks, are variations of his original design. ![]() Richard Dudgeon is credited with taking out the first patent on a hydraulic jack on July 8, 1851. ![]()
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