Abstract: Simultaneously oppositely rotating sheaves, or a chain fall, has a two sheaves upon a hexagonal axle. The first sheave receives a first line clockwise and the second sheave receives a second line counterclockwise. Upon turning the axle, the sheaves handle the lines oppositely. A signal unit regulates power delivered from a power unit to at least one motor. The power unit is preferably a battery or alternatively another source. The motor turns a gearbox that engages the axle cooperating with the sheaves. The chain fall includes an anti-two block per line. Preferably, a pulley has two outer plates and two inner plates on stubs with the first line in the center and the two second lines between an inner plate and an outer plate. A first plate and a spaced away second plate contain the components of the invention in compact form for usage by a crane.

Abstract: Simultaneously oppositely rotating sheaves, or a chain fall, has a two sheaves upon a hexagonal axle. The first sheave receives a first line clockwise and the second sheave receives a second line counterclockwise. Upon turning the axle, the sheaves handle the lines oppositely. A signal unit regulates power delivered from a power unit to at least one motor. The power unit is preferably a battery or alternatively another source. The motor turns a gearbox that engages the axle cooperating with the sheaves. The chain fall includes an anti-two block per line. Preferably, a pulley has two outer plates and two inner plates on stubs with the first line in the center and the two second lines between an inner plate and an outer plate. A first plate and a spaced away second plate contain the components of the invention in compact form for usage by a crane.

Abstract: A pivoting drive socket has a cylindrical body within a sleeve, studs on the sleeve, the studs fitting into a slotted bracket, and the bracket joining to a handle. The slot has an elongated, rectangular shape. The body rotates within the sleeve and has a tab upon one end that receives an external tool. The tab has a shape with at least two flat portions. The bracket permits the handle to engage the tab. The bracket has an opening reinforced by a ring that admits the tab for connection into that handle. The tab has at least two chamfers that grip the bracket during usage. The tab rotates the body which engages a pipe that fits upon a mechanism to raise and to lower trailer legs. The invention allows a trucker to use manual effort or to use power to raise or to lower trailer legs.

Abstract: A pivoting drive socket has a cylindrical body within a sleeve, studs on the sleeve, the studs fitting into a slotted bracket, and the bracket joining to a handle. The slot has an elongated, rectangular shape. The body rotates within the sleeve and has a tab upon one end that receives an external tool. The tab has a shape with at least two flat portions. The bracket permits the handle to engage the tab. The bracket has an opening reinforced by a ring that admits the tab for connection into that handle. The tab has at least two chamfers that grip the bracket during usage. The tab rotates the body which engages a pipe that fits upon a mechanism to raise and to lower trailer legs. The invention allows a trucker to use manual effort or to use power to raise or to lower trailer legs.