Page:Federal Reporter, 1st Series, Volume 9.djvu/845

830 FEDERAL EBPOBTEB. �Vangundy, and Pratt, and the model of Whiteley. I read frcm the specifications of Vangundy's patent of 18G4 this extract : �"The central portion of the front bar, D, (tbat is, the arched coupling-bar,) is bent upwards so as to pass over the tops of the rows of growing coni or other grain without injuring the crop, and the rear bar, E, is forked for the same purpose." �Nor was the idea of a jointed beam-yoke or axle which would allow one plow to advance to a limited extent without the other new to Schroeder, Eichholtz, Norton, Pattee, or Poling. Constant made provision for it by the pivoting of his beam-yoke to the beam, as shown in his model, thereby securing the evener motion of Schroeder and Eichholtz, or parallel-rule motion of Norton and Pattee. �Vangundy made express provision for it in his specifications, as follows : �"As the retaining pins, c c c c, act as pivots, the longitudinal playing of the ends of the bar, D, upon the pins, 6 6, permit, to a certain degree, the inde- pendeut movement of the two draught-bearas in parallel Unes, whilst a similar play of the ends of the bars E and F, upon their retaining pins, c c, within the slots in the share-beams, B B', permit the end of either draught-beam to be elevated or depressed independent of the other." �So that here is express provision for the independent action of each plow to a certain extent, and provision also for the lateral and vertical movement which is shown in the patents of the complainants. �Pratt says, in his specifications : �"The invention consists in Connecting together two plow-beams, arranged in such a manner that each beam will have an independent movement, or one to a certain extent independent of the other, whereby the implement is placed TOore under the control of the operator than usual, and managed with less labor and with less fatigue to the team." �>fC •!* T* T* n* V T* •!• �«One draught animal is attached to each beam, A, and it will be seen from the above description that each beam. A, in consequence of being connected by the cross-bars, D D, as shown, is allowed a certain independent movement longitudinally, and may therefore be managed and operated with facility in case of meeting with obstructions, and the implement is not so liable to be strained or raclied as when ths rigid frames are used, nor the team so much fatigued." �" In plowing or cultivating corn I remove the bars, D D, and put on curved metal bars, H, as shown in figure 3." �Here we have, in the Pratt device, all of the subatantial idea shown in Schroeder; that is, the connection of the plow-beams by a ��� �