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Publication numberUS1309969 A
Publication typeGrant
Publication dateJul 15, 1919
Filing dateJan 30, 1919
Publication numberUS 1309969 A, US 1309969A, US-A-1309969, US1309969 A, US1309969A
InventorsEarl M. Sterry
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Planograph co
US 1309969 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




1 09,969. Patented July 15, 1919.


lNVENTOR Ea re M lief/f R o T N E V N Patented July 15, 1919.




Patented July 15, 1919.





Specification of Letters Patent.

Application filed January 30, 1919. Serial No. 273,979.

To all whom it may concern Be it lmown that I, EARL M. STERRY, a citizen of the United States, residing at Buford, in the county of Rio Blanco and State of Colorado, have invented certain new and useful Improvements in Plowing-Machines, of which the following is a specification. I

This invention relates to plows, and more especially to spaders; and one object of the f device is to provide means for preventing the breaking of the shovels in case they strike a stone; another object is to provide 7 means for converting the machine into a cultivator or a sage bush grubber.

Yet another object is to provide meansfor swinging the shovels out of position to engage the earth, as when the machine is .to be moved from. place to place.

1 Other objects will appear in the following specification and claims, and reference is made to the drawings, wherein.:

Figure'l. is a side elevation of this machine complete, 1

Fig. 2 is a plan view, 1 Fig. 3is a cross section on the line 33 Figs. 4: and 5 are vertical sectional details 1 of the shovel standards in two positions, a Fig. 6 is a sectional detail ofone of the bearings thereof, Y 7

1 Fig. :7 is a fragmentary detail of the pawl releasing mechanism. 7 Mounted on wheels 1 is a frame 2 carryf 5 ingpreferably a seat 3 and a motor 4 just L in rear of the same, and the motor shaft is connected by sprockets and belt 5'with a i crank shaft 6 having a plurality of oppositely disposed cranks as perhaps best seen 7 in Fig. 2. This view shows but four of the 5. cranks, but it will be understood that a 1 greater number maybe employed if desired. The shaft'is mounted inbearings 7 on the 5 frame 2,and-just inside of the same hangers e 8 are also mounted on said shaft, their lower ends carrying a skeleton structure 10 which supports a transverse dirt board 11 standing preferably between the rear wheels. From 5 the structure l0rods '12" rise intoibarrels- 13 connected at their upper ends at 14 to the .2 frame, and within these barrels are springs indicated at 15 so that the rods and barrels may'telescope to a certain extent when the "parts are connected as seen in Fig. 1. This r a little "so that when the shovels (deperinits thei entire skeleton structure. to.

scribed below) strike any hard obstruction they may yield upward and forward rather than being broken. Ropes 16 are also carried upward from said structure 10 and wound on drums 17 carried on a shaft 18 ournaled in the frame, and one end of this shaft has a ratchet wheel 19 engaged by a finger 20 at the inner end of a pawl 21 which is fixed at 22 to the frame 2. The

shaft 18 is fast through the ratchet, outside of which it carries a cam 25 underlying the pawl 21 as best seen in Fig. 7 and beyond the cam the shaft is cranked asseen at 26. The flat face of the cam is disposed toward the crank so that when the latter hangs pendant as seen in this view the finger is ralsed out of engagement with the ratchet wheel, but when the crank 26 is thrown up as seen in Fig. 1 the finger is allowed to engage the ratchet wheel. Thus when the parts stand normal, the rope 16 is not so fastened that it may not pay out in case the skeleton structure swingsto the rear :1 little as permitted by the spring 15 in the barrel 13. When it is desired to swing this skeleton structure up under the frame and out of the way, as when the machine is to be transported from place to place, the barrel is disconnected at the point 14: from the frame 2 and the-rope 16 wound upon the drum by means of the crankhandle, the pawl finally coming to rest as shown in Fig. 1 so that the finger engages the ratchet wheel. P V

The hangers, 8 support another crank Patented July 15, 1919. l

shaft 36 whose cranks are equal in number and disposed in parallelism with those in the upper crank shaft 6. On each two superposed cranks is mounted a shovel standaid 30 as best seen in Figs. 4 and 5. This standard is composed of a strip; of metal bent into U form, its bend, 31 passing over the upper crank 6 and a block 32 under lying this crank and making a complete bear.- ing. The arms of the U-shapedstrip passes astride the lower crank and ablock 33 underlies it. Clips 34 connect thearms at several points, and bolts 35 connect them near their lower ends and clamp between them the shank 56 of a shovel whose blade is indicated at 37, the blade preferably standing slightly oblique to theshank? Finally, coiled expansive springs are interposed between the two; bearings and between the lower bearing and the shank, as indicated by the numerals 38 and 39.

In order that the lower crank shaft may revolve simultaneously with theuppercr-ank shaft, the two shafts are connected by sprocket wheels and a possible that, under the exigencies of a case and the stresses to which the machlne' is subjected, and especially in view of the fact that the several standards may flex a little within their length, the cranks will not always be in strict parallelismjand for the purpose ofpermitting parts to yield a little I interposel the expansive springs 38 and 39 above and below the'intermediate bearing for the lower crankshaft in each standard. One end of the upper crank shaft is herein shown as carrying a flywheel 41', The parts are illustrated in the drawings asthey are set for producing spading, and'the shovels revolve in the direction of the arrow indicatedon Fig. 1 and of course will re volve fasterthan the wheels and at -their lowest points will descend lower than the surface of the earth. If desired certain'iof the shovels may be removedifrom the stand ards'so that the machinejbecomes a' cultivator and will dig astride a rowifit is V tor on said frame; of a crank shaft mounted.

in hearings on the frame, a pair of hangers guided accurately along, the same. B'yf'r'e- 'versing the shovels within the frame, the device may be used'as a vsage brush'grubber;

' I and by changing the shape'of theblades' many other uses; can be given to the ma chine. Y

The foregoing description and the drawings have reference to what may be considered the preferred, or approved, form of my invention; It is to be understood that I' 'maymake such changes in construction and arrangement and combination of'parts, materials, dimensiOna-etcetera, as'may'prove expedientand fall within the scopeof the appended claims.

j Havingthu's fully described my invention, what'I claim asnew and desire'to secure by Letters Patent, is 1 r V '1. In a spading plow, the combination with a frame mounted on" wheel's-,jand a mopendant from the; crank shaft, a second tor on saidframe of a crankshaft mounted; V inbearings on the frame, a pair of hangers crank'shaft'mounted in the hangers, connec tions between the shafts to cause them to rotate in unison, connectionsbetween the upper shaft and the motor, upright stand? ards each having two bearings mounted on p superposed 7 lower ends;

cranks, and 1 shovels at their 7 In a I spading plow, the combination with aframe mounted on wheels,-and a mo pendant] from the crankshaft, a second 7 crank shaft mo'unted in the 'hangersy-con' nections between the shafts to cause-themfto chain indicated broadly at 40, and in Fig. 3 two of these connecting elements are shown. Yet lt 1s in said: membersIf rotate in unison, connections between the -upper. shaft and-'the motor, a skeletonstructure carried by'the lower ends of said hangers, a dirt board carried by said structure,

means for swinging said structure forward and: backward, upright standards each hav- -ing two bearings mounted on-superposed cranks, and shovels at their lower ends.

3. In a spading plow, the combination with a frame, mounted on wheels, a motor on the frame,'a= crankshaft journaled im the frame and connected with the motor, hang ers pivoted on said shaft, a second crank" shaft carried-by thehan'gers, and a plurality of shovels- Whose standards are mounted on' superposed crank s; of'a skeleton structure carried by the lower ends of said hangers,'a' dirt board'at the rear'jof said structure, rods rising from its front end and each entering a barrel, detachable connections between the barrel; and-frame, and a spring within the barrel for cushioning the movementsof rod, for the: purp'ose set forth.-

4:]In a spading plow", the combination i with a frame mounted on wheelsya' motoron the frame, a crank shaft journaled in' the frame; and connected with the motor, hangs ers pivoted Onsa-idshafQa secondshaftcara riedfby the hangers, and a' plurality of shovf 1 .795 posed cranks; of a skeleton stru'cturecarried;

els whose standards-'aremounted on super by the'lower endsflofsaid hangers, a dirt structure, yielding. connections between their upper ends and the frame, ropes rising from' said structure, and a drum'monnted on'the frame forjwindin'g' on said ropes,.-Iforthe V purpose'setforth v, t p I V v 5.'In a' spadi'ng plow, the combination with aframe: mounted onwheels; a motor 7 board at the rear end of said structure, rods jrislng from the forward portion of said ios on said frame, hangers; pivotally; Supported from the frame, upper and lower parallel V crank shafts 'mounted in said hangers, means for connecting the shafts toicanse-then to rotate in unison, connections" between. one

shaft andsaidmotor, jand pl'ows whose.

standards are mounted on superposed .c'ranks e;

of askeleton structure: at the-lower ends of f? l V 5" rear portion of saldqstructlmegiropes lead said -hangers,.;a Idirt :board' carriedjby the ing from T its front. portionupward; af shaft on the-frame having drums on which? said" ropes are 'vlvc iund, andimeans for locking, this f shaft against rotation, for the; purpo1se;set

In a ispading fwithaframexmounted onwheels andcarry ing a motor; a in-er hangerspivotal'l mountedonsaidframe,ithe*spading mech nism supported by said hangera andi coniiec 1 'tions between said mechanism and motorglof f telescopic members i connectingi itlfef lower i .endsef thehangers 'with 'theEframe, springs us e ea he: md a ments of the hangers forward and back swinging the hangers and the spading mechanism upward under the frame when the telescopic elements are detached therefrom.

7. In a spading plow, the combination with a pair of crank shafts and means for revolving them simultaneously and in unison; of a shovel whose standard embraces like cranks on the two shafts, a bearing at one end of the standard on the upper shaft,

a shovel at the lower end of the standard, a bearing for the lower shaft at the midlength of the standard, and springs above and below the last-named bearing, for the purpose set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

EARL M. STERRY. Witnesses:


r 1 Copies 01' this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2659285 *Dec 15, 1950Nov 17, 1953Burr Gordon APivoted blade cultivator
US5048617 *Apr 12, 1990Sep 17, 1991Haven Robert MHand-held tiller machine
U.S. Classification172/88, 89/1.13, 172/117, 172/89, 172/96
Cooperative ClassificationA01B11/00