Valve spring compressor

A tool for compression of a spring comprising, in combination:

• a yoke including a medial throughbore defining a longitudinal axis, said yoke further including first, second and third radial slots extending outwardly from the axis, said first and third slots generally in linear alignment transverse to the axis;
• a first spring engaging leg slidably mounted in the first slot;
• a second spring engaging leg slidably mounted in the third slot;
• a drive rod mounted for axial movement in the throughbore;
• an anvil positioned between the first and second legs and connected to the drive rod for axial movement in response to axial movement of the drive rod;
• a first guide arm having one end attached to the first leg;
• a second guide arm having one end attached to the second leg;
• said first and second arms each having a second end rotationally joined together;
• and
• a centering pin connected to at least one of said arms, said centering pin slidably positioned in the second slot, said second slot intermediate the first and third slots, said centering pin generally parallel to the axis whereby the movement of the centering pin in the second slot imparts proportional movement of the first and second legs in the first and third slots to thereby adjust the spacing of the legs.