Patent GB-999701-A (GB)
Title: Improvements in or relating to tedders
IPC: H01J37/305
Filed: 1962-08-23
Abstract: 999,701. Haymaking machines. C. VAN DER LELY N.V. Aug. 23, 1962 [Sept. 1, 1961; July 18, 1962], No. 32505/62. Heading A1F. In a tedder, of the type having a tined body 8 rotatable about a horizontal axis transverse to the direction of motion, the body is at least 2 metres long so that it can work two swaths simultaneously, and is arranged to co-operate with guide members 27, 27A, 36, 37 mounted behind the body so tha the crop can be discharged into a single swath, or into two swaths, of a width less than the strip of ground worked by the machine. The main frame is U- shaped in plan with two rearwardlyextending limbs 2, 3 on which are mounted vertically adjustable swivel-wheels 5, the planes of rotation of which are lockable by means of sectors 6. The machine is towed by a tractor through a drawbar 16 swing- able about a vertical pin 17 and lockable by a pin 19 and detent 18. The tractor drives the body 8 through a gearbox 13 and belting (not shown) in a housing 12. Mounted above the front portion of the body is an arcuate hood 20 concentric with the body, the hood having segmental endplates (not shown), both the hood and the end-plates being supported by oblique pillars 21 upstanding from the limbs 2, 3 of the frame. Mounted in brackets 24 on the pillars 21 are guide-members 27 or 27A, comprising rods 39 arranged fanwise. The guide-members are adjustable in various directions and can be locked by pin and sector members 26, 30. When the machine discharges a single swath two wide guides 27 are used, but when two swaths are discharged, short guides 27A co-operate with a pair of central guides 36, 37 similarly mounted in a bracket 33, these guides being shown retracted in Fig. 1. Instead of alternative end-guides 27, 27A the endguides may be composite and each have an extension 40 slidably bolted to it, the extension having further rods 41 which can be slid out to extend the guide-member when long guides are required. In another modification (Fig. 5, not shown) the alternative guides 27, 27A are mounted 180 degrees apart about vertical pivots on the pillars 21. In Fig. 6 the guides comprise flat plates pivoted about vertical pivots 62 on the pillars 21, the outer guides 72, 73 having pivoted-flap extensions 74 which can be swung out to produce the large guides. In this construction the machine is rigidly attached to tractor hitch-links 60 but can be swung into an oblique position (shown dotted) for transport. In a further modification (Fig. 10, not shown) the rods of the guide-members may be covered by detachable plates to render them impenetrable by grass-fragments. In yet another modification (Fig. 11, not shown) the rods forming the long guides 27 are bent so that the uppermost rods extend obliquely but the lowermost rods extend substantially parallel to the rotor-axis. In this construction, the long guides 27 are clipped on to the short guides so that their tines extend through and beyond the short-guide tines. Specifications 999,702, 999,703, 999,704, 999,705, 999,706 and 999,707 are referred to. Reference has been directed by the Comptroller to Specification 937,905.