USRE24155E - bornzin - Google Patents

Description

May 22, 1956 J. H. BORNZIN Re. 24,155

HYDRAULIC CONTROL. FOR BALE CHAMBER DISCHARGE OPENING I Original Filed Jan. 5, 1953 2 Sheets-Sheet 1 1? Inn in llllmllllll lfll E W i IIIIII 'IIIIIIIIIIIIIIIIIIIIIIIA VIIIIIIIIJ'I May 22, 1956 J. H. BORNZIN HYDRAULIC CONTROL FOR BALE CHAMBER DISCHARGE OPENING Y 2 Sheets-Sheet 2 Original Filed Jan. 5, 1953 fm/ezzzor James H flow/73:72

Fflunm -..........i.r....m\flNi-? 1 llfl a 0. QON MN WNN N m v James H. Bornfln, La Grange, lll., asslgnor United States Patent Oflice RM t:

- 4 tion of the star wheel. j

HYDRAULIC CONTROL FOR BALE CHAMBER Still another important .object of this invention is to DISCHARGE OPENING J #matically controlling the size of the discharge Opening of a bale forming chamber wherein fluid under pressure may be employed to contract the bale chamber discharge opening, or fluid may be bypassed or partially bypassed order to vary the degree of contraction and/or the fluid national Harvester Company, a of lerley U Organ! No. 2,718,189, dated September 20, l95! Serla1l 0. 329,555, January 5, 1953. Application for reissue November 7, 195$,Serlal No. 545,586 a ha-med with the discharge opening ay p a" 13 3m (CL 100-43 1 :Hde'pendent upon the density of thehay within the bale d in h b I forming chamber. a Matter en oaed eavy Mlle aPl 'I Other and further important objects and advantages of m "tent 'f r w gg fl m 16 this invention will become apparent from the disclosures g 12 n u e r I e in the following specification and accompanying drawings. in v; lathe drawings:

This invention relates to a new and improved hydraulic 1 is side nll Ytew of the real' P On control for bale chamber discharge opening. U r a hay 14 55 5 a reservoir depending upon of my supply a valve means in a hydraulic system for auto-' tinder pressure delivered to the contracting means may be I The control of the size of the discharge op ning of a Figure 2 is a mfional view taken on the Figure l-. hale forming chamber is important In determining the 1 1 density of the bales being made. This is particularly true Flame 3 P" enlarged fragmentary of field traversing hay balers wherein the bale in process K of g h i i Show In figure 1 and of being made is pushed or compacted against the bales Pans m won,

previously made and still within the bale forming chamber. Figure 4 is a top Plan View of a m of the device hown in Figure 3' These completed bales still within the chamber thus form as i a back pressure by reason of their resistance to discharge 5 secuonal take on M which resistance is determined by the size of the bale sure an chamber discharge owning Anyone baling hay is Figure 6 is a vertical sectional view ofthevalve means sirous of obtaining bales of uniform density so that the 32:52:: in the device of invention as shown in bales weigh substantially the same amount. Various 7 conditions of the hay being baled require various sizes Show m f' a ig g of discharge openings in order to accomplish bales of f 'f 3 y g be 1 F: uniform density, thus if the hay is damp when baling is e 9 e c m r as m en commenced there will be a greater friction between the a Inasmuch as fqrms no pan of the prcsem .F hay and the balechamber walls than when the hay is dry, "8" f f z h ti i g; end of i f ift g which very often occurs if the sun is permitted to dry am z 5. 5 f q g l e the hay for a longer period of time. It is thus apparent i argedopegmg ed t iz that the bale chamber discharge opening must have its size "fi cfmceme 9 g e e W constantly varied in order to produce bales of uniform emerging from the arse en in of bale density forming chamber 10. Hay, straw or other material to be This invention 'is directed to an automatic control for baled; g ig i f g zhim g g' m the discharge opening of a bale forming chamber and is g" f w 'a" an improvement over the patent to Raney 2,478,012. pres n ed d p g 5 e A principal object of this invention is to provide hy- 1 ls p gf an if Y g' draulic means for varying the size of a bale chamber dist e 13 F e Q charge opening I gs can in igure altwtnehoresran rater: I; An important object of this invention is the provision of 5 f g 'iz a 9 if: means engaging the hay in a bale forming chamber to thus 2 e a e c 2: er h an s f 'z 3 vary the delivery of hydraulic fluid to a means directly i z z ga zi 8 S g i f controlling'the variable discharge opening of the bale p n s be 17 h n! forming chamber. tensltonlng nfm r a ht ence tlsawarThytoczdl tleen- Another important object of this invention is to supply cm: mg nee e meansas s own at e n c a fig gz mi zggzg zn from the movement of there engage a knotting mechanism where the strand enling ends are united in a suitable knot or twist. The Still another important ob ect of this invention is to provide a combination of bale material, density feeler and needle 18 earned on an arm plvoted at 20 on the bale adapted to swing upwardly through the chamber 10 andforming chamber 10. The needle 18 is shielded by means 2323;333:2311 further important object of this in- 9 an Guam guard 21 depending bneaih the bale form vention is the provision of a hay engaging star wheel, the m3 chamber A brake member 22 formed the depth of penetration of which directly varies the vbale guard swps f chamber discharge opening and simultaneously the rotaf needle F Posmontion of this same star wheel actuates a hydraulic pump to W 8 mechamsm IS not Pcmnem t0 lobe ff a ni f h 1, h b di h Opendescribed herein but it does show the environment for the ing and/or the fluid under pressure may be bypassed to invention and provides the logical reasoning for the means' '5 arranged to bias or urge the frame member 63 into closer relationship with the top of the chamber 18 and thus urge greater penetration of the 59 within the hay 61. The spring is mounted standard 11 and is confined thereon between washers 12 and 73. A nut 14 holds the spring end washers 72 and 73 downwardly against a late 15 welded as shown at 16 and 77 to the spaced s" s: ag s g" is provided with a circlular hole or aperture 80 through which the vertical standard 11 is free to slide. The base of the standard 11 is shown at 81 and is carried to the member 82. The spring 76 thus actively urges engagement'of the hay 61 by the star wheel 59 and the depth of penetration of the star wheel, and thus concurrently the downward movement of the rectangular frame 63 is dependent upon the density of the hay 61 within the bale forming chamber and the strength of the spring. As shown in Figure 3, the hay 61 is moved through the bale forming chamber 19 in the general rearward direction as indicated by the arrow 84. It is the function of the device of this invention to automatically vary. the size of the discharge opening 12 of the bale forming chamber 19 in response to the depth of penetration of this star wheel 59.

Fluid to be used in the hydraulic system of this device is stored in a reservoir 85. This reservoir is fastened by I bolt means 86 tothe vertical portion 87 of the frame 68. A cap 88 is provided at the top of the reservoir 85 and thus fadlitates refilling of hydraulic fluid as necessary. A combination hydraulic pump and valve housing 89 is equipped withfa flange 90 around its base portion and by means of bolts 91 is fastened to the horizontal portion 82 of the frame 68. It is thus apparent that the vertical swinging movement of the rectangular frame 63 is with respect to both the vertical standard 71 around which the spring 78 is carried and also the hydraulic pump and valve housing 89. The hydraulic pump within the housing 89 is shown at 92. This pump or power converter 92 is of the reciprocating piston type and there is shown projecting therefrom a piston rod 93 which is hingedly attached at 94 to an arcuately swingable arm 95. The arm 95 is hinged at 96 to a frame member 97 hingedly carried on the combination pump and valve housing 89 and 98. LA cammed rotor 99 is fastened to the star wheel carrying shaft 62 and is arranged to rotate with the star wheel 59 as that wheel receives rotational drive by reason of movement of the hay 61 through the bale chamber and 19 of the hinged rectangular frame 63. The 1 10. A wheel 100 is journaled for rotation on the arm by means of a stub shaft 101. A ball bearing member 192 is disposed between the shaft 101 and the wheel memher 190 so that the wheel may rotate relatively free of frictional interference. The wheel 100 is adapted to ride on the outer periphery of the cam rotor 99. The wheel 198 is arranged to have continual contact with the cam periphery because of a spring 103 arranged to pull the upper end of the arm 95 rearwardly toward the end of the hinged frame 63. The spring is anchored at 104 on the upper end of the arm 95 and its rearward end at 105 on a hook member 106 which is bolted or otherwise fastened at 197 to an extension lug 108 of the hinged rectangular frame 63. The cam rotor 99 is provided with live radially extending lobes 109 which have intermediately disposed valleys 110. As the star wheel 59 and cam rotor 99 rotate in the direction of the arrow 111, the arm 95 is swung back and forth alternately as the lobes 189 engage the wheel 100 on the arm 95 and then 'vthe wheel drops down into the valley 110 by reason of the spring 193 maintaining contact of the wheel 100 with Ahe outer periphery of the cam rotor 99. This back and forth swinging movement of the arm 95 causes the purnppiston 93 to reciprocate within the pump 92 causing fluid to be drawn from the reservoir 85 through a con- 75 6 I duit 112 and by means of the valve portion 113 of the combination valve and pump 89, the fluid under pressure is thereafter delivered through either a conduit 114 to the cylinder 33 or through a conduit 115 leading back to the reservoir 85. The delivery of fluid under pressure is thus controlled by the valve mechanism 113.

The arm 95 would normally move in a arcuate path back and forth to actuate the piston rod 53 of the pump 92 but in order to compensate for the arcuate movement and to prevent binding of the mechanism, the lower end of the arm 95 is pivoted as previously stated at 96 so that this lower attaching point 96 may move slightly up and down in an arcuate path about the arm 91, so there is an absence of binding within the piston rod 93.

It should be understood that the source of power for this hydraulic pump or power converting element 92 is obtained by reason of rotation of the density measuring star wheel 59. An upwardly extending handle portion 116 is formed as an integral part of the pivoting arm 95 and thus permits the operator of this machine to manually actuate the pump 92 at certain times such as when the baling machine has been inactive for some period of time and there is an absence of fluid under pressure in the system and/or when it is desired to supplement the fluid under pressure by manually actuating the pump over and above that automatic operation by movement of the hay 61 through the bale forming chamber 19.

As best shown in Figure 6, the valve 113 is of the ball check type and includes a vertical cylindrical passage 111 within the housing 89 and a ballvalve 118 which is adapted to have vertical movement within the passage 117. A spring 19 is adapted to urge the ball valve 118 in its lower position in the passage 111 and against the ball seat 121 in the bottom thereof. The pump 92 is adapted to deliver fluid under pressure through the passage 120 into a slightly enlarged chamber 122 beneath the seat 121 in the valve block or housing 89. As shown in Figure 6, the position of the valve 118 is such that all of the fluid put under pressure by the pump 92 will be delivered to the cylinder 33. The enlarged chamber 122 is joined to the cylinder conduit 114 by a cored passage 123. Fluid is blocked from entering the vertical valve passage 117 by reason of the spring urged ball check valve 118. However, this blocking may be removed by pressures in the cylinder 33 exceeding the spring pres sure on the ball whereby the ball 118 rises and fluid is permitted to by-pass back to the fluid reservoir through the cored passage 124 to the reservoir conduit 115.

it is the object of this device to elfect a change in the forces applied by the ball closing spring 119 by the various vertical positionings of the rectangular frame 63. A cross bracket member 129 spans the sides 78 and 19 of the rectangular frame 63 in much the same manner as the plate 75. Here again the plate bracket 129 is welded at 130 and 131k) the spaced arms 78 and'79 of the frame 63. An adjustable screw member 132 threatedly engages the bracket member 129 and extends downwardly therethrough. A handle 133 is adapted to be engaged by an operator and the screw may be adjusted vertically for varying the point of contact with an upwardly extending slide member 134 from the housing 89. This slide member 134 is best shown in Figure 6 wherein it has vertical sliding movement through a threaded bushing 135 engaging the top opening 117 in the combined pump and valve housing 89. The lower end of the slide member 134 carries a cap like member 134a which fits over the top of the spring 119. When the rectangular frame 63 is in an upper position at a time when the star wheel 59 has difliculty penetrating the hay-61 there will be a minimum of spring force holding the ball 118 in engagement with the seat 121 wherein no fluid will be added to the cylinder 33 but rather the fluid is diverted through the check valve 118 and delivered back to the reservoir. Conversely when the star wheel 59 penetrates the hay 61 to a greater extent, the rectangular frame 63 .be-actuated with greater llito'begrestly making dltllcult check valve 110 so that a major portion under pressure from the pump-92 is of the discharge opening 12. -A pressure gauge 38 is attached to the conduit 114 so that the operator thedevicemayeonstantlybeawareoftheamount the 114 leading to the cylinder 33.

device of this invention is'relatively automatic to the compensating of the size of the disng of the density of the bales regardless of the condition the hay being baled. This is accomplished by the hydraulic means described which directly contracts or esthe discharge opening 12 by reason of a fluid under the source of power for which is the rotation of the hay penetrating wheel. The density of the baled hay directly controls the amount of contraction or expansion of the bale chamber dischargeopening. it should be apparent also that the responsiveness of the valve 113 may be made more or less critical by reasonofthe adjustment of the screw 132 whereby the ball valve 118 may eat upon theposition of the rectangular frame 63 on which the penetrating mechanism is all carried.

Numerous details of construction may be varied throuflrout a wide range without departing from the principles disclosed herein and], therefore, do not propose limiting the patent granted hereon otherwise than is necessitatedby the appended claims.

What is claimed is:

1. An operating mechanism for controlling the size of a bale chamber discharge opening comprising a bale forming chamber through which material to be baled is a means for directly varying the size of the bale chamber discharge opening, a supporting structure mounted on the bale forming chamber, an arm hingedly mounted on said supporting structure, a bale penetrating wheel mounted for rotation on said am, spring means biasing said arm and penetrating wheel toward engagement with said bale, whereby the bale penetrating wheel is rotated by movement of the bale material within the bale forming chamber and the depth of penetration of said wheel depends upon the density of the bale material, means driven by rotation of said penetrating wheel for actuating said means for directly varying the size of the bale chamber discharge opening and means dependent upon the degree of penetration of said bale penetrating wheel controlling the degree of actuation of said means for directly varying the size of the bale chamber discharge opening. a

2. A device as set forth in claim 1 in which the means for directly varying the size of the bale chamber discharge opening is a hydraulic means.

3. A device as set forth in claim 2 in which the means driven by rotation of said penetrating wheel comprises a lever arm pivotally mounted on said supporting struc- ,ture, a multiple lobed cam wheel driven by said penetrating wheel, means causing said lever arm to engage and follow said cam wheel whereby the lever arm rocks about its pivotal mounting, a fluid supply, a piston type hydraulic pump, link means joining said rocking lever arm to said hydraulic pump wherebyv said pistontype hydraulic pump is actuated by rotation of the bale penetrating wheel, and conduit means joining said piston type hydraulic pump'to said hydraulic means for delivery of fluid under pressure thereto.

tothecylinticrltothusdecrcaseot'contract a bale, forming chamber dependent iii or lesser fluid pressures'depend- 4. A device as set forth in claim 3 in which the means dependent upon the degree of penetration includes valve means for controlling the admission-or exhausting of fluid under-pressure to said hydraulic means.

5. A device as set forth in claim 4 in which said valve means comprises aball check valve, and spring means urging said valve toward a closed position.

said hingedly mountedarmtorvary nlthe 6.Adeviceassetforthin'clsim$inwhichthereis means interconnecting said spring means arm has a hand engaging portion to provide for manual operation of said hydraulic pump.

9. Adeviceas-setforthinclaimlihwhichthemeans driven by rotation or said penetrating wheel comprises a lever arm pivotally mounted on said supporting structure, a cam wheel driven by said penetrating wheel, means causing said lever arm to engage and follow said cam wheelwhereby the lever arm rocks about its pivotal mounting supplying a driving force for actuating said means for directly varying the size of the bale chamber discharge opening.

10. An operating mechanism for controlling the transverse size of a bale chamber comprising a bale forming chamber through which material to be baled is passed, a means for directly varying the size of the bale chamher, a supporting structure mounted on the bale forming chamber, an arm hingedly mounted on said supporting structure, a bale penetrating wheel mounted for rotation on said arm, spring means biasing said arm and penetrating wheel toward engagement with said bale,

whereby the bale penetrating wheel is rotated by rnovement of the bale material within the bale forming chamber and the depth. of penetration of said wheel depends upon the density of the bale material, means driven by said penetrating wheel for actuating said means for directly varying the size of the bale chamber, and means dependent upon the degree of penetration of said bale penetrating wheel controlling the degree of actuation of said means for directly varying the size of the bale chamber.

11. An operating mechanism for controlling the cross sectional size of a bale chamber comprising a bale forming chamber through which material to be baled is passed, a means for directly varying the size of the bale chamber, asupporting structure mounted on the bale forming chamber, an arm hingedly mounted on said suplast named means rotatably driven in response to movement of the material to be baled through said-bale forming chamber. v

12. An operating mechanism for controlling the cross sectional size of a bale chamber comprising: a bale forming chamber through which material to be baled is passed, a means for directly varying the size of the bole forming chamber, said means including a power converting element, a bale engaging member, means mounting said bale engaging member for movement into and out of said bale, means biasing said bale engaging member toward engagement with add bale, means compressing material to be baled within said bale forming chamber, and means to drive said power converting element by ma bole engaging member, ta um named means by movement of'materiai through nid bale forming chamber.

13. An operating mechanism for controlling panagc of material through a bois chamber comprising: a bcis Q Iormingehamberthmugh whichmateriaitobebeiedie passed, a mean: for directly restricting pauage of materiai through the baie forming chamber, mid meane incheding a power converting element, a baie engaging membenmearumountingeaidbaieengagingmember for movement into and out of said 'baie, mean-I biasing said baie engaging member toward engagement with said bale, means compreuing material to be baled within laid baie forming chamber, and mean: to drive laid power 10 iaet named mean: driven by movement of material through mid bale forming chamber.

Referelceecltedinlhefl leofthilpctent or the original patent UNITED STATES PATENTS 7 2,478,012 Raney Aug), 1949 2,576,184 Dodds et a! Nov. 21, 1951 converting element by nid bale engaging member, laid m 2.613.590 Gny ill 1952

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