Abstract: In a package strapping tool of the pusher bar type a strap foot restrainer 59 pivoted at 49 to a frame 25 carrying a strap foot 47 is swung clockwise by double-acting auxiliary piston and cylinder assembly 63 from an open position, allowing strapping to be inserted laterally between a rotary dog 50 and strap foot 47, to a closed position (FIG. 4) in which a part 60 of the restrainer 59 engages the underside 61 of the strap foot 47 to support the strap foot 47 against the pressure of the rotary dog 50. In the closed position the restrainer 59 bears against a peg 68 on a carrier, also pivoted at 49 the frame 25, for the rotary dog 50 driven by an air motor 51 and urges the dog 50 against strapping overlying the strap foot 50.

Abstract: A package strapping tool of the fluid pressure operating type embodying tensioning means for tightening a loop of strapping around a package and joining means for securing together overlapped portions of the loop. The tensioning means and the joining means are operated by hydraulic or pneumatic means wherein the initiation of the joining operation is controlled through a time delay device the timing cycle of which is started by the application of fluid pressure to the tensioning means. The time delay device is preferably of a pneumatic or hydraulic type which uses for its own operation the fluid which is suppled under pressure to operate the tool. The time delay device is preferably adjustable whereby the cycle of the tool may be varied dependent upon circumstances and the timing cycle may be started by the supply of fluid pressure to the tensioning means.