US1254879A - Mower. - Google Patents

Description

1. BoHMKEn.

mwen. APPLICATION rFILED lIl ll. I4. UIL

,010.. f N L 'lowering the finger bar,

UNITED sTATEs PigrENr OFFICE..

JOHN C. BOHMKER, 0F BRADLEY, ILLINOIS, yASSIG'NCJB. TO SEARS, ROEBUCK AyNDI COMPANY, 0F CHICAGO, ILLINOIS, A

CGRPORATIDN OF NEW YORK.

MOWEB.

Appunti@ mea mmh 14, 1917.

To i ll whom itmay coment.'

E a it lin/own that 4I, JOHN C. BOHMKER, a citi'zflenE df the United' States, residing at Bradley, in the county of Kankakee and State of Illinois, have invented certain new and useful Improvements in Mowers, of which the following isa specification/f This invention relates to improvements upon mowers of thetype having a main or primary framework to which the tongue and the seat support are rigidly attached, and a secondary frame pivotally connected to the main or primary frame, the finger bar being hinged to the secondary frame.

Among the objects of the invention are to provide improved means for raising and to provide an improved manner of supporting the yoke to which ,the finger bar is pivoted, and torproviden,. a'n` improved arrangement of the second'ry frame whereby increased traction is obtained.

In the accompanying drawings, Figure 1 is a fragmentary side elevation of a mower embodying the features of my invention. Fig. 2 is a fragmental front elevation of the mechanism for lifting the finger bar. Fig. Sie a section through the tongue. Fig. 4 is a fragmental plan view of the machine.A l

-In the drawing, the main or primary frame is indicated at 1, said fra-mecomprisf ing a tubular portion lor sleeve 2 through which the axle 4 extends. 5 denotes one of tliedrive wheels. seat` support (not shown) are rigidly attached to themain frame 1. The secondary lll5 Aframe-consists of three bars 6, 7 and 8. The vstubbleward vend of-the front bar 6 has a ball-and-soc'ket connection atv 9 with the main frarn`e`1. -The opposite end portion of the rigldly connected to the for- Ward'end of the push bar 7 by`ineans of a bracket or casting 10. The rear end of the push par 7 is pivpted at 11 tol an arm.12 which is ri id Withthe tubular portion 2 of the main 'graine and rojects downwardly from .said tubular portion. The bar 8'is rigidly 'secured to the bars 6 and 7 by means of the brackets 13 and 14 and serves to'brace the secondary frame. Any ordinary or suit-J able means may be provided for raising the secondary frame to-.lift the cutting mechanism'off the ound when desired.-

A yoke 15 1s pivotally mounted upon the Specification at Letters Patent.

The tongue 1 and the' the main frame 1 Patented J an. 29, 1918,'. serial No. 154,665. i

grassward end of the bar 6, said yokehavlng a front -arm 15i and a rear arm 15b that serve pivotally to support the shoe 16 for' the finger bar 16.4 As shown in Fig. 4, the sleeve 17 of the yoke has an aperture 18 therein through which the bracketl 10 projects. By thus forming an opening in the sleeve 17, it becomes possible to locate the bracket 10 close to the extreme end of the liar, wherebythe bar 6 is effectively sup-. ported against bending stresses, and great strength is obtained. The stubbleward end o'f the sleeve 17 lies belweenthe brackets lil and 14.

The means for raising and lowering the finger bar comprises an arm 19 fixed 'to'and extending upwardly from vthe shoe 16 ata point forward of the front arm 15k1 of the yoke 15. The upper end of said' arm-is connected by means of a chain or other suitable flexible connection 20 to a windinglsegment 21 which is pivoted upon the forward end of the brace The segment 21 extends toward the shoe 16. When the lingervbar is being raised, the chain 20 fis pulleddown under the segment 21. As best shown in Fig. 2, the periphery of the segment 21 is not concentric with the axis 8 but is so shaped as todepress the chain 2 as Well as wind or bend the chain -over the periphery of the segment. Rigid with the segment 21 is -an arm 22 which extends apf proximately dialnetrically opposite to the segment 21 and is connected by means cfa chain or other suitable'flexible connection'23 with a lug 24 on a bell crank 25 fixed vto a shaft 26 which is rotatably mounted upon the tongue 1". Thebell crank25 has a segmental winding portion chain 23 is bent as the bell crank is swung upwardly. Normally the'lug and the wind-v ing portion27 extend fora sdly fromlthe axis 26 of the bell crank 25. The bell crank l25, comprises a forwardly and upwardly4 eX- tending portion which' is connectedat 28 to aV hand lever 29 by means of a linkl 30, said hand lever being pivotally mounted upon in'gerlbar. is in operative 241s in approximately the horizontal plane of the axis 26 so that turning movementvv 'of- --cause the Iin'ger bar yrearwardly of the bell cranl'c25. Referring to Fig. 1:Whe n theA position, the point bar 8 in front of the front bar 6'.

27 over which the eatiid with reference to the axis 2G that the liant] lever' 2*.) has eflicienl leverage on the hell crank in raising the lattr'r. AIt desired1 the hand lever 29 may be locked in adjusted position in an ordinary or suitable manner, as', for exam i e, by means of a detent 31 en gaging a locking segment 32a.

A coiled tension spring 33 is attached at one end to a pin 34 on the winding segment 2l. 'lhe other end of the spring is connected to a rod 35 which extends slidably through a lug 36 on the bar 6. 37 is a nut turned on the screw-tlu'eaded end of the rod and bearing against the lug 3G. 'lhc spring 33 serves to counterlmlance a portion of the Weight of the finger har and the parts supported by said bar. The finger har is further counterbalanced by means of a coiled tension spring 38 connected at one end to an arm 39 fixed to the shaft 2t and at its other end to a lug 40 on the main frame l. By properly adjusting the mu iT 1hr springs 33 and 38 will counterbalance the linger bar to such an extent that said har will simply float over the ground. The linger har is thus prevented from dragging upon the ground whereby side draft is avoidmh and the power necessary to pull the linger bar along the ground is saved. By reason of the employment of the winding segments 2l and 26, the finger bar may lic lifted from its operative position to an approximately vertical position without au inconvenient 41, I'place upon the` amount of movement of the hand lever 29, the counterbalancing ofthe finger bar being preserved throughout the lifting movement.

It will be apparent from Fig. 1 that the lug 12 is of such length that. the pushing bar 7 of'the secondary frame extends substantially horizontally. Resistance to the advance of the cutting mechanism acting through the push rod 7 thereforelnis no tendency to lift the wheels from the ground 'and thus reduce their traction.

The shaft 26 is journaled in a plate 41 which is mounted on the tongue la: To provide a firm and durable seat for the vplate Y tongue 1f tw'o angle irons'42 fitting over the upper corners of extending longitudinally thereof. The4 angle irons 42 'iay be secured to the tongue 1 in any suitable manner, as, for example, by means of screws 43. The plate 41 is seated directly upon the angleirons 42 and is secured in place by means of a U-bolt or shackle 44 that extendsv from one corner of the plate 414 down around'the tongue and up to the diagonally- `opposite corner of the plate.- To assist 1n Vward arm and a rear ners opposite to those engaged by the U-bolt 4i are provided with downwaidly-extending lugs At6 that bear against the angle irons 42.

A cam 47 on the hand lever 29 is arranged to engage a rocker arm L18 on the main frame to throw out the clutch (not shown) when the finger bar has reached a degree of elevation rendering any further operation of the cutting mechanism impractical.

The draft connection may be of any suitable character. The preferred construction comprisesl a. drauwhar -19 connected-at its rear end to a lug 5() on the lower side of the tongue 1I relatively near the axle. The doubletree or other draft ap liance is, connected to the forward end o the draw-bar l0. Said drawbar is supported near its forward end hy means of a strap or loop ol depending from the tongue 12Y l claim as my invention:

l4 A mower having, in combination, a main frame.r a tongue secured to the main frame. a secondary frame comprising a front bar pivoted to the main frame, a push bar pivoted to the main frame and rigidly connected to the front bar, and a brace har rig idly connected to the front bar and the push har and extending forwardly of the front liar, a yoke mounted on the front bar and having a forward armv and a rear arm, ashoe pivoted to said arms, a finger har rigidly connected to the shoe, an arm extending upwardly from the shoe forward of the front arm of the yoke, a winding segment pivoted upon the forward end of the brace bar in front of the front bar and extending toward the shoe, a ex'rble, conneet-ion attached at one end to the upwardly extendino' arm and at its otherend to the lower site of the winding segment, an arm fixed to the winding seg-ment and extending substantially opposite to the Segment, a bell crank pivotally mounted upon the tongue and having a portion which normally extends forwardly of the axis of the hell crank, a. iexible connection between said forwardly extending portion of the bell crank and-the arm attached to the winding segment, a hand lever. pivoted on the vmain frame, said bell crank having a portion which normally extends lupwardly and for.

a secondary, frame comprising a front bar and a pu'sh bar pivoted to the mainframe and rigidly connected together, a yoke mounted on the front bar and having a for arm. a shoe pivoted to said arms, a finger bar rigidly connected to the shoe, an arm extending upwardly from the shoe forward of the frontvarm of the yoke, a winding segment pivoted upon the `secondary frame in front ofthe front bar and extending toward the shoe, a flexible connection attachedat` one end to the upextending substantially opposite to the segmet, a bell crank pivotally mounted upon the tongue and having a portion which normally extends Vforwardly of the axis of the' bell crank, a flexible connection between said forwardllymr e arm'attached to the winding seg-4 extending portion'of the bell crank and t ment, a hand lever pivoted4 on the main i frame rearwardly of the bell crank, said bell n crank having a/portion which normally ex tends upwardly and forwardly of the axis of the bell crank, and a connection between the hand lever and said upwardly and forwardly extending portion of the bell crank.

3. A mower having, in combination, a main frame, a tongue secured tothe main frame, a secondary frame comprising a front bar and a push bar pivoted to the main frame and rigidly connectedtogether, a yoke mounted Von the front bar and having a for ward arm and a. rear arm, a shoe p1voted to `said arms, a linger bar rigidly connected to the shoe, an arm extending upwardly from the shoe forward of the front arm of the yoke, a' winding segment pivoted upon the `secondary frame in front of the front bar "and extending towardA the shoe, a flexible connection attached at one endu to the upv `wardl .to theil extending arm and at its other end ower side of the windingsegment, an arm fixed to the Winding segment and, extending substantially opposite to the ,seg-

l ment, a bell crank pivotally mounted upon the tongue and having a portion which nor- 'mally extends forwardly of the axis of the A bell crank, a flexible connect-ion between said forwardly extending portion of the `bell crank and the arm-attached to the winding segment, a lever pivoted on the main frame,

l and-a connection betweenthe lever and the hellfcrank.

4. A mowe'r having, in combination, a main frame, a secondary frame swingingly connected to the main frame, a finger bar pivotcd to the secondary frame, ai winding segment pivoed on the secondary 'frame and extending toward the finger bar, un arm fixed to the segment and extending in substantially the opposite direction, a flexible connection between the winding segment and the finger har, a bell crank pivoted on the mainframe, a flexible connection between .said arm and thebell crank, a lever on the main frame and connected to the bell crank for lifting the latter, a spring connected to the bellcrank, said spring being connected `to the main frame, and a spring connected bar, a. member connecting tends at one end to the winding segment and adjustably connected at its other endto` the secondary' frame, said springs coperating to counterbalance the finger bar. p

5.A mower having, in combination, 'a inain frame, a secondary lframe, swingingly connected to" the main frame, a finger bar pivoted 4to'the secondary qiframe, winding segment pivoted on one of said framespand extending towardvthe finger bar, an arm fixed to the segment and extending in su-bstantially the `opposite direction, a flexible connection between said arm and the finger bar, a bell crank pivoted on the main frame, a flexible connection between the winding segment `and the bell crank, a leveron the main frame and connected tothe bell crank for lifting tlielatter, a spring connected to the bell crank, and a spring connected. to the winding segment, said springs cooperating to coimterbalance the finger bar, `6. Aemower having, in combination,` a main frame comprising a tubular portion,

an axle extending through `said portion,` a

said lug, said push barextending approxi mately horizontally when,` the secondary frame is in operative position. y

7. A mower "having, in combination, a main frame, a. secondary frame comprising a front bar and a push bar, the stubbleward end of the front bar beingvmovably connected to the main frame, the grassward end ot' the front bar being connected to the forward end of the push bar, a lug extending downwardly from the main frame, the rear end of the push bar being pivoted to said lug, said push bar extending approximately hor'- izontally when the secondary frame is in operative position. Y i

8. A mower having, in combination, a mainframe, a secondary 'frere swingingly connected to the main fra the secondary frame comprising a front and a push grassward end ard e-nd of the d upon the front of said. connecting of the front bar to the push bar, and a yoke n bar at opposite en n'iember.

A mower having, in` combination, a main frame, n secondary frame swingingly connected to the lmain trame, the secondary frame comprising a front bar and another bar, a member connecting said bars, and a yoke pivotally supported upon the grassward end of the front bar, said yoke having an opening through which said member ex- 10. mower having, in combination, a tongueangle irons fitting over the corners -of said tongue and extending longitudinally ther of, al plate seated on said angle irons,

,af U-bolt engaging kdi'agonally-oppositc corners of said plate and extending around the 1 tongue, lugs on the other two corners of the plate extending downwardl angle irons, and studs on sai plate extending into openings in said angle irons' to pre-- vgage the angle irons and prevent turning of the plate, and a U-bolt engaging said platel and .extending around the tongue.

13. A mower having, in comblnation, a

' 0- tongue, a late, a U-bolt engaging said plateV and exten ing around the tongue, and means to prevent the plate from turning with reference to the tongue. l

14. A mower havin in combination, a main frame, a secon ary frame, a yoke mounted o@ the secondary frame, aV shoe besidey saidy over the corners pivoted `to the yoke, an arm extending upwardly from the shoe, a winding segment pvoted upon the secondary frame and exf tending toward the shoe, a llexble connection `attached at one end to the arm and at its other end `to they lower side of the winding segment, an arm fixed to the winding segment and extending Substantially opposite to these ment, `a bell crank piv'otally l supported wit i reference to the main frame,

a flexible connection between saidbell crank and the second mentioned arm, a lever on the main frame, and a connection between the lever and said bell crank for swinging the bell crank to pull the first mentioned flexible connection down. below the axis of the winding segment,

15, A mower having, in combination, a main frame, a front bar pivoted tothe main frame, a push bar pivoted to the main -.fran1e, a bracketrigidly uniting the forward end of the push bar and the grassward end of the front bar, a brace bar connected at its rear end to the push bar, a bracket connecting the forward portion of the brace bar to the front bar, and a yoke having a` sleeve rotatably mounted upon the grass ward end of the front har, said sleeve having an openin 'therein through which the first nientione bracket projects, `the stubbleward end of said sleeve lying between said brackets.

In testimony whereof I have hereunto set my hand. -v Y I JOHN C. -BOHMKER

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