NOV' l2» 1946~ s. G. wAsHBuRN AUTOMATIC IMPLEMENT LÍFT ÍFÜR FLOWS med nay 27, 1944 v Patented Nov. 12. 1946 2,411,072 sArEs PATENT orifice AUTDMATIC 2,411,072 LEMENT LIFT FOR PLQWS Selden G. Washburn, Goodwin, S. Dak. ‘ Application May 27, 1944, Serial No. 537,686 1 3 Claims. (El. 97---74) This invention relates to agricultural plows, and has special reference .to one that ~might aptly be 2 mediate of the beam d and the encompassing bracket 9 provided for the purpose. This bear-- referred to as a beamless plow. ing also functions as the fulcrum for the leg dur ing its rocking movement. The stock of which this leg 5--5 is formed, is' thereto when engaging obstructing objects such preferably of round iron to more closely iit into as large stones or `the like while plowing. the opposite sides of the sheave 8, and .to limit Another object is to provide such auxiliary sup the lowermost permanent Working position of the porting means of as simple and durable construc plow, the cross-bar member is formed interme tion as possible. 10 diate of the opposed spaced members 5-5 of the Other objects and advantages may appear in leg and spaning said space so that when the plow -the further description of .the invention. has traveled to its downward limit, the cross-bar Referring now to the accompanying drawing. l@ will rest Ádirectly upon the sheaye 8. forming part of .this application and in which like As control and auxiliary support for the plow reference numerals indicate like parts: l _ 15 I have provided the sort of toggle connection in» Fig. l is a side elevation of a two-bottom gang cluding the major bracing members H--l l, one or sulliey plow embodying the invention and of which is pivotally attached at its lowermost showing one of the plows as being in danger of forward end to the member t of the chassis as at engagement with an obstruction, asa large stone I2, and the other attached as at.32 to the mem or other object, and automatically jumping up 20 ber 2 of the chassis, while the opposite ends of - and over it. these braces are pivotally attached as at I3 to the Fig. 2 is a top plan view of'Fig. 1. upper arched end of the leg 5--5 land-beyond Fig. 3 is an enlarged rear elevation of the toggle which point i3 lthey extend somewhat as at it equipment for one of the plows, and where they pivotally carry as at l5 the arm i8 Fig. ‘i is a horizontal sectional view on the line 25 connected at ll to the long arm i8 of the bell ß-fl of Fig. 1 illustrating the cooperation be ' crank lever, the opposite or short >arm` being illus tween the guiding sheave holder and the leg of trated at I9 and the lever pivoted as :at 2li be one of the plows. ` . ` tween the upright spaced and iixed members In the drawing, I, 2, 3, and Il represent coopera 2|-2I rigidly supported upon the rearmost .ter .tive parts of one form of practical rigid metal 30 minal of the beam è of the chassis. chassis 4for .the two-bottom sulkey which is pref This bell-crank lever controls the raising and erably made of angle or channel bars commonly lowering of lthe plow either automatically or by used for such purposes. ' hand and for which latter purpose, the forward The following description will be confined prin end of lthe chassis is equipped with any suitable cipally to the near raised plow, which it is form of hand lever 22 therefor, which of course, thought, will adequately cover the instant inven must be' always set with sufficient slack in its tion as the equipment for a diiferent assembly of connection to the short arm I9 of the bell-crank bottoms may vary considerably in chassis con control lever to permit the automatic functioning struction. of the plow when normally at work, such yieldable ' Now, in place of a beam disposed usually hori 40 connection may be in the form of a chain as zontally and above the plow or plows proper for shown at 23 or a longitudinally slotted bar, not drawing same through the ground, the chassis above referred to, provides such means, and the Now .the power for the automatic functioning plow is equipped to function at will, to a, limited of the plow is provided by the relatively strong extent at least, independently of the action of 45 contractile helical spring 24 installed within the the chassis. leash 40 which is attached at one end .to the for To accomplish this, I have> provided the elon ward end of .the chassis as at 25 and at its oppo gated open link-like leg 5_5 fixed as at B-B to site end to the depending quadrant 2B fixed to the heel of the landside 1 of _the plow, said leg the under side of »the arm I8 of the bell-crank being reciprocably as well as rockably attached 50 lever, this quadrant being for convenient selec tive adjustment of the >tension of the spring 25. to one beam oi’ .the chassis, which in this instance, as we are describing only the nearer one oi’ the Obviously, this spring must be of suilicient plows shown, is the beam 4. This pivotal sup y strength and normal tautness to hold the arm I8 port comprises the roller or sheave-lilre member in its lowermost vertical position >when it and the 8 loosely jcurnaled within an odset bearing inter 55 arm I6 are Jackkniied together as shown in con The principal object is to provide means for support of a plow that will alleviate the abuse shown. , ' ì 2,411,072 3 4 . nection with the other plow in the drawing» that 'is at work, and at which time the pivotal con nection IB is slightly rearwardly oi' the stationary pivotal point'Zll in the support 2 I-2 I . - Thus any upward stress at the upper ends of and according to circumstances and does not form any part of this invention. While I haveshown and described one form of specific novel toggle mechanism for permitting automatic action of, a plow to prevent its being the Ibraces Il-i I, for example, byy the colter 30 damaged when an obstruction is encountered, engaging an obstruction as shown in Fig. 1 of , it is to -be understood that the same may be varied materially without departing from the spirit of the drawing, will tend to open the- jackknifed ‘ the invention as set forth’ in the appended claims. attitude of theltoggle members just described and 4 ‘ permit'the plow to jump over the obstruction 10 What I claim is: 1. In automatic release means for a plow; a engaged, thence instantly, by gravity, and aid of supporting chassis'for said plow, a vertically re-. the spring 24, return to its work in the furrow. ciprocal rockable beam for said plow carried by 'As a colter for such a plow, I prefer to use the said chassis and supporting salti plow depend disk or roller type, as shown at 30, which may have, as here illustrated, a double supporting 15 ingly therefrom, a roller bearing within and for said beam, carried by said chassis, a colter car arm :ii-3l attached pivotally and externally ried by said chassis and beam and operable with of the braces iI-II and upon the same pivot said plow, and means 'associated with said plow therewith as at I3, thus simplifying the toggle and colter to cause the colter, when engaging connection and making it susceptible to func tioning by the action of the colter as well as 20 an obstruction in advance of said plow, to lift the possibly by the action of the plow. These colter supporting arms 3i-3I latter over said obstruction. are ‘ » 2. I_n combination; a frame-like chassis, a plow `supported by said chassis, an open verticallyV movable beam supporting Asaid plow from said termined distance above or forwardly beyond the 26 chassis, a rotatable bearing carried by said chas sis forming the connection of said beam with point of the plow. depending upon the type of said chassis to permit said vertical movement, a plowing being done and/or the nature of the land lever pivotally attached'at one end to the for 'beingv worked. tethered as at 35 to the leg 5-5 of the plow so that the colter can not move beyond a prede - ward end of said chassis and adjacent the oppo Th‘ese colter supporting arms are also yieldably attached to the brace Ii above same by means 30 site end pivotally attached to the upper end of said beam, compound toggle means pivotally at of the contractile helical spring’36, these arms also having an auxiliary limiting attachment as at 31 whereby to insure upward or jumping ac . tached at the extreme rearmost end of said lever and supported by said chassis and manually op- - erable fromvthe forward end thereof for rais ing and lowering said plow, a colter supporting tion of the plow as well as the colter after the latter has engaged a material obstruction that otherwise might have done damage. It so happens that in the construction of a said lever and said beam, and contractile spring two-bottom chassis as shown, it is advantageous l means connecting said colter arm with said beam arm'plvoted at its upper end at the union of - I to normally keep said colter ahead of said plow to utilize portions of the toggle bracing in coop eratively uniting parts of the chassis, and to 40 whereby when said plow and colter are in normal working position and said colter contacts an ob- ’ which end, one of the braces Il between which struction in advance of said plow, said plow and the uppermost arcuate end of the plow leg 6-5 colter will automatically be raised away from said is pivoted, extends diagonally forwardly over to obstruction. ' the other side member 2 of the chassis, and piv 3. In a plow and chassis therefor of the char otally attached thereto at 3g as previously stated.v acter described; ' means including a reciprocal A similar brace 33 functions in alike manner beam rigidly fixed to said plow and a colter sus . for the lowered or working plow and is brought over diagonally therefrom and pivotally attached '. pended from the upper end of said beam and op erable in advance of said plow for automatically as at 3l to the side member 4 of the chassis, thus stabilizing the latter lstructure materially as well 50 raising same from injuriously contacting an ob struction in the furrow ‘being made by said plow, as adding support for the plows._ said means furtherv characterized vby being piv There is suggested at 4I means for attachment otally guided from the forward end of said chassis. ' to a tractor or other power for pulling the sulky, _it being obvious that this would vary> considerably . SELDEN G. WASHBURN.