A grapple for handling logs includes a base portion connectable to a working machine portion and at least one tine connected to the base portion. The at least one tine has a protruding length from the base portion. The grapple further includes a catch arm pivotably arranged relative to the base portion. The grapple can assume configurations with different protruding lengths of the at least one tine.

A balanced cantilevered feeding apparatus for coupling with a jib, and a complementary method for its operation, configured to facilitate depositing and removing of a load through an opening in a building. The apparatus includes two spaced apart upright hoisting assemblies disposed on the jib, and a fly beam hoisted, balanced, and selectively positioned along a lateral axis by the two hoisting assemblies. A load securing member is mounted on a cantilevered extension portion of the fly beam, wherein the member extends beyond one of the two hoisting assemblies toward the building, and a counterweight is connected to the fly beam in the vicinity of another of the two hoisting assemblies.

A balanced cantilevered feeding apparatus for coupling with a jib, and a complementary method for its operation, configured to facilitate depositing and removing of a load through an opening in a building. The apparatus includes two spaced apart upright hoisting assemblies disposed on the jib, and a fly beam hoisted, balanced, and selectively positioned along a lateral axis by the two hoisting assemblies. A load securing member is mounted on a cantilevered extension portion of the fly beam, wherein the member extends beyond one of the two hoisting assemblies toward the building, and a counterweight is connected to the fly beam in the vicinity of another of the two hoisting assemblies.

A balanced cantilevered feeding apparatus for coupling with a jib, and a complementary method for its operation, configured to facilitate depositing and removing of a load through an opening in a building. The apparatus includes two spaced apart upright hoisting assemblies disposed on the jib, and a fly beam hoisted, balanced, and selectively positioned along a lateral axis by the two hoisting assemblies. A load securing member is mounted on a cantilevered extension portion of the fly beam, wherein the member extends beyond one of the two hoisting assemblies toward the building, and a counterweight is connected to the fly beam in the vicinity of another of the two hoisting assemblies.

A balanced cantilevered feeding apparatus for coupling with a jib, and a complementary method for its operation, configured to facilitate depositing and removing of a load through an opening in a building. The apparatus includes two spaced apart upright hoisting assemblies disposed on the jib, and a fly beam hoisted, balanced, and selectively positioned along a lateral axis by the two hoisting assemblies. A load securing member is mounted on a cantilevered extension portion of the fly beam, wherein the member extends beyond one of the two hoisting assemblies toward the building, and a counterweight is connected to the fly beam in the vicinity of another of the two hoisting assemblies.

A common connection apparatus for coupling a power tool to an extensible arm and a power supply, the apparatus including a tool support base designed to support a tool, and a power supply support base designed to be affixed to the end of the extensible arm. The tool support base and the power supply support base each include a plurality of power connectors, positioned for engagement when the bases are aligned. The tool support base also has an alignment stab, which is received within a channel of the power supply support base. A plurality of pins are further positioned on the tool support base, to be received in apertures of the power supply support base. By this configuration, the bases may be aligned and engaged, facilitating the transmission of power from the machinery to which the arm is affixed, to the tool.

A common connection apparatus for coupling a power tool to an extensible arm and a power supply, the apparatus including a tool support base designed to support a tool, and a power supply support base designed to be affixed to the end of the extensible arm. The tool support base and the power supply support base each include a plurality of power connectors, positioned for engagement when the bases are aligned. The tool support base also has an alignment stab, which is received within a channel of the power supply support base. A plurality of pins are further positioned on the tool support base, to be received in apertures of the power supply support base. By this configuration, the bases may be aligned and engaged, facilitating the transmission of power from the machinery to which the arm is affixed, to the tool.

A link member of a gripping assembly, which is suitable for weighing of each load during reloading, may include a rotatable gripping assembly or similar appliance mounted on the arm of a hydraulic crane, which is suitable for mounting onto a motor vehicle and then for manipulating with each load, the weight of which can be measuring during said manipulating. The link member may be provided by modifying a known link member, which is generally used for attachment of each gripping assembly, together with a rotator, to each crane arm, such that in addition to the attachment of the gripping assembly the link member may enable weighing of each load during each manipulating therewith by means of the crane and each gripping assembly, wherein the determining of each weight of the load may be performed precisely and accurately despite to movement and rotation of the load.

A holding device for use with a telescopically extensible crane boom (57) in order to keep a load handling tool (4) in a given parking position in relation to the crane boom. The holding device (1) comprises: an attachment (10) to be fixed to an end of a telescopic crane boom section of the crane boom; a tool holder (15), which is detachably mountable to the attachment (10) and configured for engagement with the tool in order to support it against the crane boom and keep it in the parking position, the tool holder being provided with a sliding member (28), through which the tool holder is configured to slidably rest against an external surface on the crane boom; and a locking mechanism (16) for locking the tool holder and the attachment to each other when the tool holder is mounted to the attachment.

A system and method for controlling a grapple is described in embodiments herein. A variable pressure control may be implemented that controls the pressure applied to a load held by the grapple. An interlock mechanism may be employed on the felling grapple that disables the operation of components of the felling grapple such as a feller. A grapple release mechanism may be activated to release the pressure applied to the load in the event of a malfunction in the felling grapple.