DAVIS V. BEOWK. 649 �aimnged, as the greater resistance on the greater number would alwaj's keep theni so; but if an even number of shoes be used, and an equal number in each row, tiien the lever would have to be locked or f astened in both of its positions. It is obviousthat other mechanical devices maybe used for shifting the shoes or hoes from a straight into a zigzag Une, or vice versa, I have devised sev- eral ways of accomplishing this movement. [The rack-bar or connecting-rod, m, may be used for this purpose, and thereby the shoes or hoes may be shifted from a straight to a zigzag line, or vioe versa, said conneeting-bar, m, being held in position, if desired, by any of the usual mechanical devices for that purpose; second, bymeans of] as, for instance, a sheave, pulley, or chain-wheel, [which] may be keyed to the end of the crank-shaft, and to this wheel or sheave a chain may be attached, and, passing around it, retend thenoe to the. lever, so that, by ivorking the leoer, [means thereof,] the same efEect wculd [can] be attained by the rack and pinion. �"Anotherplan may be as follows: A crank or cross-arms maybe placed on the turning shaft, u& bymeans of [a] Connecting' [rod or] rods which con- neot the oranks orarms with the levers, the shaft may be turned [by the oper- ator] and the shoes thus thrown into a straight or zigzag line, as may be desired; or, instead of [the crank shaft] crank-shafts to shift theshaes, the shoes may be united in sets to different bars, which may be straight, both bars being united to cross-bars or heads at their ends. Now, by shifting [the relations of] these two bars, [and by the means aforesaid, or by the con- necting-rod, m, the operator can] th^y will shift the shoes [or hoes] attached to them, and change them into the positions [position] hereinabove deseribed. ■When the hoes are set in a zigzag line, as above mentioned, and are in that position raised up, a pin, 3, in the extreme end of the shaft, d, will take against a pin, 4, in the lever. H, and thereby shifting the hoes into more nearly a straight line as they rise, or into quite a straight line, depending upon the extent to which they are raised." �Keading in the foregoing what is outside of brackets, including what is in italios, and omitting what is inside of brackets, gives the text of the specification of the original patent. The claims of the re-issue, six in number, are as follows : �"(1) The shoes or hoes of a seed-planter attached to the main frame, sub- stantially as deseribed, whereby they may be simultaneously shifted from a straight to a zigzag Une, or vice versa, by a single movement. (2) The shoes or hoes of a seed-planter attached to the main frame, substantially as de- seribed, in combinatiou with a lever, 6r its equivalent, whereby they can be shifted, at the pleasure of the operator, from a straight to a zigzag line, or vice versa. (3) The shoes or hoes of a seed-planter attached to the main frame, substantially as deseribed, in conibination with a rod, or its equivalent, whereby they can be shifted from a straight to a zigzag line, or vice. versa. (4) A series of shoes or hoes that are capable of being changed from a straight to a zigzag line, or vice vei'sa, in combination with independent levers Connecting said shoes or hoes with the lifting-bar, whereby they can be raised by the operator individually or as a whole, substantially as deseribed. (5) The shoa ��� �
