Fence support structure, especially for equestrian show jumping

A fence support structure, especially for equestrian show jumping, comprising upright post means (3) for supporting horizontal bar means (4) forming an obstacle, obstacle holding means (11) including adjustment means (15, 20) for securing said obstacle holding means to said upright post means, comprising in combination sectional first rail type guide means (5) operatively associated with said upright post means (3) alongside the side thereof facing said obstacle holding means (11), said obstacle holding means including second guide means (12) for slidably engaging said first rail type guide means for sliding up and down said upright post means (3), each of said first and second guide means including interlocking means (9, 10, 12) for holding the obstacle support means against disengagement from the first rail type guide means in a horizontal direction as defined by said bar means (4), said sectional first rail type guide means (5) comprising a row of aligned holes (7), said adjustment means (15, 20) including bolt means (15, 20) movable relative to said adjustment means and fitting into any one of said holes, spring bias means (14) operatively arranged between said bolt means and said obstacle holding means for normally biasing said bolt means to engage into one of said holes, whereby the obstacle holding means are held at an elevation along said upright post means substantially as determined by the engaged hole, and whereby said obstacle holding means are adjustable along said upright post means when said bolt means are withdrawn from said engaged hole, whereby the side of the upright post means facing away from said obstacle holding means remains free of any obstructions.