Sliding block with adjustable track positioning

Claim 2

A sliding block with adjustable track positioning comprising a prismatic body, in one face of which there is a longitudinal recess arranged to receive a rail by way of rolling elements positionable in respective tracks, said body being essentially of C-shaped cross-section comprising a central part from which two flanges extend, characterized in that in at least one of said flanges of said C-shaped cross-section there is provided a second longitudinal recess which divides it into separate portions connected together at said central part, said second recess has a cross-section in the form of an open L with its lower end facing said first recess, said second recess containing elements for adjusting the distance between said two separate portions.

Claim 3

A sliding block as claimed in claim 1, characterized in that said rolling elements are balls.

Claim 4

A sliding block as claimed in claim 1, characterized in that said rolling elements are rollers.

Claim 5

A sliding block with adjustable track positioning comprising a prismatic body, in one face of which there is a longitudinal recess arranged to receive a rail by way of rolling elements positionable in respective tracks, said body being essentially of C-shaped cross-section comprising a central part from which two flanges extend, characterized in that in at least one of said flanges of said C-shaped cross-section there is provided a second longitudinal recess which divides it into separate portions connected together at said central part, said second recess containing adjustment elements for adjusting the distance between said two separate portions, said adjustment elements comprise screws arranged transversely to said two separate portions and acting to bring said two portions further apart or closer together, said screws pass through a seat provided in a first of said two portions and are screwed into a threaded second seat in the other of said two portions, a longitudinal eccentric shaft inserted within a relative profiled housing provided in facing surfaces of said two portions and interacting with said transversely arranged screws.

Claim 6

A sliding block with adjustable track positioning comprising a prismatic body, in one face of which there is a longitudinal recess arranged to receive a rail by way of rolling elements positionable in respective tracks, said body being essentially of C-shaped cross-section comprising a central part from which two flanges extend, characterized in that in at least one of said flanges of said C-shaped cross-section there is provided a second longitudinal recess which divides it into separate portions connected together at said central part, said second recess containing adjustment elements for adjusting the distance between said two separate portions, said adjustment elements comprise screws arranged transversely to said two separate portions and acting to bring said two portions further apart or closer together, said screws pass through a seat provided in a first of said two portions and are screwed into a threaded second seat in the other of said two portions, a longitudinal eccentric shaft inserted within a relative profiled housing provided in facing surfaces of said two portions and interacting with said transversely arranged screws.

Claim 7

A sliding block as claimed in claim 4, characterized in that said shaft is provided with recesses for receiving said screws.

Claim 8

A sliding block as claimed in claim 4, characterized in that said screws are positioned within threaded seats in said other of said two portions and act against a facing surface of said first of said two portions.

Claim 9

A sliding block as claimed in claim 4, characterized in that said rolling elements are balls.

Claim 10

A sliding block as claimed in claim 4, characterized in that said rolling elements are rollers.

Claim 11

A sliding block with adjustable track positioning comprising a prismatic body, in one face of which there is a longitudinal recess arranged to receive a rail by way of rolling elements positionable in respective tracks, said body being essentially of C-shaped cross-section comprising a central part from which two flanges extend, characterized in that in at least one of said flanges of said C-shaped cross-section there is provided a second longitudinal recess which divides it into separate portions connected together at said central part, said second recess containing adjustment elements for adjusting the distance between said two separate portions, said adjustment elements comprise two wedges arranged facing each other along their inclined surfaces within profiled seats in facing surfaces of said two separate portions, elements being provided for the shifting and mutual axial positioning of said two wedges.

Claim 12

A sliding block with adjustable track positioning comprising a prismatic body, in one face of which there is a longitudinal recess arranged to receive a rail by way of rolling elements positionable in respective tracks, said body being essentially of C-shaped cross-section comprising a central part from which two flanges extend, characterized in that in at least one of said flanges of said C-shaped cross-section there is provided a second longitudinal recess which divides it into separate portions connected together at said central part, said second recess containing adjustment elements for adjusting the distance between said two separate portions, said adjustment elements comprise two wedges arranged facing each other along their inclined surfaces within profiled seats in facing surfaces of said two separate portions, elements being provided for the shifting and mutual axial positioning of said two wedges.

Claim 13

A sliding block as claimed in claim 9, characterized in that said elements for the shifting and mutual axial positioning of the two wedges comprise a pair of transverse plates, each of which is fixed at a first end to a portion of the first flange of the body of the sliding block and carries within a threaded hole a screw which acts against an end surface of one of said two wedges.

Claim 14

A sliding block as claimed in claim 9, characterized in that said elements for the shifting and mutual axial positioning of the two wedges each comprise a screw screwable into a hole provided in a portion of said first flange and acting via its head against one end of one of said wedges.

Claim 15

A sliding block as claimed in claim 9, characterized in that said rolling elements are balls.

Claim 16

A sliding block as claimed in claim 9, characterized in that said rolling elements are rollers.

Claim 17

A sliding block with adjustable track positioning comprising a prismatic body, in one face of which there is a longitudinal recess arranged to receive a rail by way of rolling elements positionable in respective tracks, said body being essentially of C-shaped cross-section comprising a central part from which two flanges extend, characterized in that in at least one of said flanges of said C-shaped cross-section there is provided a second longitudinal recess which divides it into separate portions connected together at said central part, said second recess containing adjustment elements for adjusting the distance between said two separate portions, said adjustment elements comprise a conical pin extending in a longitudinal direction and located within rounded seats provided in said facing surfaces of said two separate portions, at least one screw being provided for shifting said conical pin in a longitudinal direction.

Claim 18

A sliding block with adjustable track positioning comprising a prismatic body, in one face of which there is a longitudinal recess arranged to receive a rail by way of rolling elements positionable in respective tracks, said body being essentially of C-shaped cross-section comprising a central part from which two flanges extend, characterized in that in at least one of said flanges of said C-shaped cross-section there is provided a second longitudinal recess which divides it into separate portions connected together at said central part, said second recess containing adjustment elements for adjusting the distance between said two separate portions, said adjustment elements comprise a conical pin extending in a longitudinal direction and located within rounded seats provided in said facing surfaces of said two separate portions, at least one screw being provided for shifting said conical pin in a longitudinal direction.

Claim 19

A sliding block as claimed in claim 14, characterized in that the head of said at least one screw acts on a washer located at a transverse end of said second recess.

Claim 20

A sliding block as claimed in claim 14, characterized in that said rolling elements are balls.

Claim 21

A sliding block as claimed in claim 14, characterized in that said rolling elements are rollers.