Abstract: An improved string clamping device for racket and like stringing machines, which includes an elongated housing having spaced and opposed side walls and open opposite ends, the side walls of said housing defining opposite sides of a channel which extends through the housing from one end to the other, a pair of elongated string engaging members positioned extending lengthwise in said channel, bearing members adjacent the respective opposed side walls of said housing mounting said string engaging members for limited longitudinal and lateral movement in said channel whereby said members move closer together when moved longitudinally in one direction than when moved in the opposite direction, at least two spring members positioned extending transversely between the string engaging members at spaced locations between opposite ends thereof, said spring members normally biasing said string engaging members apart from each other and in said opposite direction of longitudinal movement, a pin member extending between an

Abstract: An improved apparatus for stringing rackets such as tennis rackets and the like including improved means for locking the racket against movement in different fixed positions during stringing to prevent loss of string tension, improved string gripping and holding means, improved bearing means for the string tensioning means to improve the accuracy thereof, improved and more universal means for clamping a racket in position on the stringing machine including means by which a greater range of racket types, sizes, and shapes can be accommodated, and improved means for adjusting the operating speed of the machine.