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The polyspastos, when worked by four men at both sides of the winch, could readily lift 3,000 kg (6,600 lb) (3 ropes x 5 pulleys x 4 men x 50 kg or 110 lb = 3,000 kg or 6,600 lb). If the winch was replaced by a treadwheel, the maximum load could be doubled to 6,000 kg (13,000 lb) at only half the crew, since the treadwheel possesses a much ...
Harbor Freight Tools, commonly referred to as Harbor Freight, is an American privately held tool and equipment retailer, headquartered in Calabasas, California. It operates a chain of retail stores, as well as an e-commerce business. The company employs over 28,000 people in the United States, [5] and has over 1,500 locations in 48 states. [6] [7]
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Shocking doorbell camera footage has captured the moment a garbage truck exploded and injured a firefighter and two police officers in Illinois on Friday, Dec 6.
The boy’s mother was knocked under the cab and the still-spinning wheel was on top of the kid’s leg, a tourist visiting from Oregon told ABC 7.. The tourist and others nearby then dropped what ...
A simple dumbwaiter is a movable frame in a shaft, dropped by a rope on a pulley, guided by rails; most dumbwaiters have a shaft, cart, and capacity smaller than those of passenger elevators, usually 45 to 450 kg (100 to 992 lbs.) [2] Before electric motors were added in the 1920s, dumbwaiters were controlled manually by ropes on pulleys.
Reviewed by Dietitian Maria Laura Haddad-Garcia. Diet culture can have us believe that in order to lose weight, we need to eat fancy "superfoods" and eliminate completely healthy foods, like ones ...
[5] [11] The updated Odysseus includes a welded aluminum frame that can lift more than 4,000 lb (1,800 kg) in its payload tray. [6] Additional updates to equipment and structures have resulted in an increase in the mass, which is now 5,500 lb (2,495 kg). The yellow float has been retained, and a blue stripe bearing the name Odysseus has been ...