| 摘要 |
1,092,541. Seats. JOHN DEERE-LANZ A.G. Dec. 14, 1964 [Dec. 13, 1963; Oct. 13, 1964], No. 50858/64. Headings A4B and A4J. A vehicle seat assembly comprises two seat frame plates 3 connected by an axle 5 about which a seat 7 is pivotable. A backrest is provided consisting of rods 10 rotatable about a movable shaft 13 which projects through plates 3. The seat is movable from a seating position which may be angularly adjusted to an upright position behind the backrest. A back pad 12 is adjustable along the rods 10. The angular position of the backrest may be adjusted. For this purpose each rod 10 is formed with a bearing 17, Figs. 2 and 3 (not shown) having a cam surface (18), (19) engageable by a bolt 20 secured to shaft 13. A lever 21 fixed to shaft 13 may be actuated to cause bolt 20 to slide down cam surface 18, (19) and release the clamping engagement of the teeth of a toothed segment (14) fixed to plate 3 with the teeth of a counter profile (15) of bearing (17). The backrest is'then freely pivotable into the required angular position where it may be clamped by upward movement of lever 21. In a modification, Fig. 4, seat 7 is pivotally mounted on frame 3 by linkages 25, 26. The backrest has pivots 28 rotatably engaged in vertical slots 29 in frame plates 3 and in plates 30. The backrest is angularly adjusted by lifting it to release pins 33 in the backrest from notches 32 formed in plates 30, turning the backrest about pivots 28 and then lowering it to engage pins 33 in notches 32. |
