Patent GB-191127300-A (GB)
Title: Improvements in Hay-making Machinery.
Inventor: MAW PERCIVAL TRENTHAM
IPC: A01D78/00
Filed: 1911-12-06
Granted: 1912-12-05
Abstract: 27,300. Maw, P. T. Dec. 6. [Cognate Application, 5834/12]. Haymaking. - Relates to swath-turners and sidedelivery rakes in which the tines are controlled by parallel eccentric disks or spiders coupled together by cranked rods. In the adjustable and reversible swath - turner shown in Fig. 1, two turning mechanisms A, B are mounted in frames c<2> hung on the axle c and s u p p o r t e d by castorwheels c<3>. The eccentric disks N, N' are connected by c o u p l i n g - r o d s f cranked horizontally or vertically and arranged parallel to the line of draught. The disks are driven by gearing d, d<1>, d' which is reversed by moving the sleeves d' and wheels d, d' along the axle into engagement with collars d<4>. Mounted on the rods f are cranked horizontal bars g having parallel ends at rightangles to the line of draught. The bars may be vertically adjustable. On the ends g<1> are longitudinally, vertically, and laterally adjustable rakes which are parallel or nearly parallel to the line of draught and revolve round different axes. The rakes carried by any one coupling - rod are at different distances from the axle and from the side of the machine. They may be parallel to the axle. The swath-turner may be converted into a sidedelivery rake by turning the bars g through 180 degrees about their own axes parallel or at rightangles to the line of draught or to the disks, and then turning the rake heads T through 180 degrees about their own axes and moving them to the ends of the bars g, more rakes being detachably mounted on the bars g. The mechanism B may be turned over the axle c and connected to the frame c<5> of the horse shafts. One of the mechanisms may be placed at various distances from the axle and in front of or behind the other. In a modified machine, two sets of long rake-carrying bars g are mounted on one set of long bent coupling-rods f, the ends of which are parallel to the line of draught for considerable lengths. Extra tines may be mounted on the coupling-rods. The frame may be strengthened by a removable cross-brace, and the whole mechanism may be turned over the main axle, horse shafts being connected to the castorwheet. In the swath-turner shown in Fig. 4, tines are mounted directly on the ends of coupling-rods f cranked at the centre. The two sets of tines are parallel or inclined to the line of draught and pass round different axes. In another modification, the rake heads are mounted on straight oblique bars instead of cranked bars. In another convertible machine, the tines are mounted directly on straight oblique bars reversibly mounted on the coupling- rods, and they revolve round a common axis. The rakes of one mechanism overlap laterally the rakes of the other. The rake-carrying bars may be adjustable vertically. The tines may be mounted on hollow tubes which may be turned over, and the rake heads may be provided with adjustable tubular or hinged extensions. The rake-carrying bars need not be movable; and rakes may be arranged on the coupling-rods, which may be oblique. Figs. 9 and 10 show means for mounting the carrying- bars g and rake heads T. The bars g are bolted to sleeves g<2> which are adjustably fixed on the rods f by bolts g<5> engaging collars g<3>. In a modification, the bar g is normally prevented from turning in a fixed bearing by a square shoulder, but may be rotated after withdrawing a pin or catch and moving laterally. The rakehead T is rotably mounted in a bearing t<1>, and is fixed at any angle by bolts engaging collars t<2>, or by means of a many-sided collar normally held in place in the bearing t<1> by a pin or catch. The bearing t<1> is provided with a series of holes t<6> for vertical adjustment on the bar g, and is laterally adjusted by means of a bolt t<3> and holes g<8>; or it may be secured in notches in the bar g by a catch. The centre part of each rake-carrier g may be omitted and the parallel parts g<1> separately hinged to the rod f so that they may be turned about vertical axes. The rear rakes ,may be higher than the others, and at a different angle. To obviate turning over, the rakes may have double tines with prongs at an angle of 180 degrees. Guards may be provided. According to the Provisional Specifications, the tine or rake carrying bars may be set at various angles to the line of draught, and may be turned on their own axes; and the rakes may be adjusted angularly relatively to the line of draught. Specifications 12,874/03, 1164/07, 812/08, and 13,491/10 are referred to.