Tufting of level cut pile and loop pile in the same row of stitching
AssigneeSpencer Wright Industries, Inc.
InventorsNeale Kenneth Bennett, Alan Reid
Life of this patent
Estimating the term…
Abstract
A multi-cylinder module has a common block within which the cylinders are formed and having a piston disposed within each cylinder and an output rod connected to each piston. Pressurized air acts on the piston against the bias of a corresponding spring to drive the respective rod outwardly from the module. Each rod has a coupling member which is coupled to the gate of a hook of a tufting machine having gated hooks for forming both loop and cut pile. The modules are mounted directly to the hook bar of the tufting machine and require no additional linkages between the coupling and the gate with the inherent lost motion and other inefficiencies associated with such additional linkages.
Claims9
A cylinder module for a tufting machine comprising a housing formed with a plurality of internal spaced apart cylindrical chambers, each chamber having a piston located therein and having an output rod connected to the respective piston extending from the housing, an air inlet communicating with the respective chamber for receiving pressurized air selectively to drive said piston against an internal biasing force when pressurized air is supplied through the inlet, and said housing having an integral connecting portion for receiving a connecting member for attachment to said tufting machine.
A module for a tufting machine including a plurality of hooks fastened to an oscillating hook bar, each hook having a bill and a throat with a blade therebetween, a gate oscillating with and moveable relative to each respective hook to permit loops of yarn to be released selectively from the bill or to be received onto the blade and pass to the throat, a knife driven into cooperation with each hook for severing loops of yarn that have moved to the throat, said module comprising a housing formed with a plurality of internal spaced apart cylindrical chambers, each chamber having a piston located therein and having an output rod connected to the respective piston and extending from the housing, an air inlet communicating with the respective chamber for receiving pressurized air selectively to drive said piston against an internal biasing force when pressurized air is supplied through the inlet, said housing having a connecting portion for receiving a connecting member for attachment to said hook bar, and a coupling member fastened to each output rod and to a respective gate for connecting said rod to said respective gate.
In a tufting machine comprising a plurality of hooks fastened to an oscillating hook bar, each hook having a bill and a throat with a blade therebetween, a gate oscillating with and moveable relative to each hook to permit loops of yarn to be released selectively from the bill or to be received onto the blade and passed to the throat, a knife driven into cooperation with each hook for severing loops of yarn thereon that have moved to the throat, a cylinder module including a housing formed with a plurality of air internal spaced apart cylindrical chambers, each chamber having a piston located therein and having an output rod connected to the respective piston and extending from the housing, an air inlet communicating with the respective chamber for receiving pressurized air selectively to drive said piston against an internal biasing force when pressurized air is supplied through the inlet, said housing having a connecting portion for receiving a connecting member for attachment to said hook bar, and a coupling member fastened to each output rod and to a respective gate for connecting each rod to said respective gate.
Dependencies are inferred from the claim text.