Патент USA US2135382код для вставки
Nçv. 1, 1938. l c. F. rsLooMl ' ROD WEEDER Filed sept. 29, 1957 2,135,382 ' Nov. 1 , 1938. _ c. F. BLo'oM I 2,135,382 ROD WEEDER Filed Sept. 29, 1957 ILLLlkt mm. Z Sheets-Shea?I 2 Patented Nov. 1, 1938 4 2,135,382 ? »UNITED STATES ‘ REISSUED PATENT OFFICE 2,135,382 ROD WEEDER Charles F. Bloom, Vancouver, Wash. Application September 29, 1937, Serial No. 166,401 8 Claims. My invention relates to rod Weeders, and is par- - ticularly related to the mechanism for driving the rod. The primary object of the invention is to encase all driving parts within housings that will not gather foreign matter such as Weeds, etc., while the machine is in operation. S Another object of the invention is to eliminate ` universal joints and moving parts that would be exposed to the dirt and dust associated with the operation of the machine. A further object of the invention is to encase all working parts wthin a grease filled housing. And a still further object of the invention is to permit free and independent movement of the 2 secured underneath and rigidly thereto. A weeder rod 3 is journaled within the shoes 3A, and end of the shaft 6 by cap screw IIIA. The‘hous ing 8 is mounted to the frame I indirectly through the upright bar I I. The bar I I contacts the roll ers I2, I3, I4, I5 and I6, said rollers hold the bar il in a vertical position and permit the bar to work freely up and down between said rollers. The operation of the bar between these rollers is an important feature of this invention as I have ’ found that the free operation vertically of the machine. In the operation of rod weeders a great deal driving wheel vdepends upon free movement of the bar Ii within the above described guide rollers. of foreign matter, such as weeds, dirt, vines, and . bearing surfaces 3B provide bearings within the shoes 3A. A floating drive wheel 4 having a spin dle 6 secured to the Wheel by flange 'I is mounted oi to the housing 8 within bearings 9 and retained thereto by the flange Iû, which is secured to the driving mechanism relative to the frame of the O dust are encountered and it has been my experi ence that machines having open parts, as chains Referring to Figure 8, the rollers I5 and I6 are so positioned as to take the backward strain of foreign matter, therefore I have employed a flex ible cable drive from a driving mechanism entirely encased, so that no foreign matter will be tangled the driving wheel Il when the frame is moved towards the left. The shoulders ISA and I'I that support the spindles of the rollers I2 and I4 pro vide a .guide for the bar II in the opposite direc 25 therein. tion as there are no strain or stress in this direc and gears, give a great deal of trouble due to this . . rEhe cable is so arranged in connection with my mechanism that weeds andvines, due to the di rection of rotation and weave of the cable will O not become entangled thereabout. I have also found that the driving mechanism for driving the rod should work independent and freely of the frame of the machine, so that uneven surfaces will not affect the depth of the rod. In my new and improved rod weeder I find that placing the transit wheels behind the frame of th machine is most desirable. ' Referring to the drawings: Figure 1 is a fragmentary plan view of my new and improved drive for rod Weeders. Figure 2 is a front sectional view, taken on line 2_2 of Figure 1. Figure 3 is an end sectional view taken on line 3_3 of Figure 1, looking in the direction indi cated, parts broken away for convenience of illus tration. ' Figure 4 is a plan view of another preferred form of embodiment of a drive Wheel hook-up. Figure 5 is a fragmentary front View of the C drive wheel mechanism shown in Figure 4. Figure 6 is a detail view, partially in section, illustrating how the cable floats within the drive gear. Cl (Cl. 97-42) In the drawings: I is the frame of the Weeder having goose-necks tion. A beveled ‘driving gear I8 is fixedly se cured to the shaft or spindle Ii and drives the driven beveled gear i9, having hub 20 freely re volving within the bearing 20A. 'I'he cable 2I is ñxedly secured within the housing 20 at its one end and is securely mounted to the rod 3 at 22. The cable 2l therefore provides a flexible drive between the rod 3 and the gear I9. In the operation of this drive as the drive Wheel 35 4 contacts uneven surfaces it is permitted to work up and down freely with reference to the frame of the weeder driving the rod 3 through the gears I8, I9 and'ilexible shaft 2|.. All gears run within a closed housing 8 within a bath of oil. It will be noted that the housing 8 is protected by the rim 4A of the driving Wheel 4 thus prevent ing the entanglement of foreign matter about this mechanism. In operation this is a very im 45 nortant feature. Referring to Figure 4, I show the upright bar I I connected to the main frame I by four par allel connecting links 26 permitting the wheel 4 to float up and down over uneven surfaces rela tive to- the Weeder. These parallel bars are an chored to theframe I by the adjustable brackets 25 secured to the frame by fastening bolts 2l. These brackets are adjustable relative to the frame. One end of the parallel bars is pivotally mounted to the brackets 25 at 28, suitable shoul 55 2 2,135,382 der spacers being used to permit free movement of the bars. 'I'he opposite end of the parallel bars is pivotally mounted to the upright bar || at 29 VVand are clamped thereto with shoulder spacersfpermitting free movement of' the bars. Y Thisrparallelbanmovement is a Well known prin ground wheel having an annular rim, a housing supported Within the rim, gearing arranged in said housing, and a flexible drive element hav ing limited longitudinal play with respect to one of the gears and extended beyond the gears for connection to aweeder rod. 4. A rod Weeder including a frame, a weeder~ ciple which I have adapted to my drive Wheel in connection with my rod weeder. Referring to Figure 6, the gear I9 which drives 10 the cable 2|Vhas a hub 20. The end of the cable rod mounted for rotation in the frame, a ground wheel including an axle,`a housing, supported on 2| terminates in a, square nut 30 which floats in by the axle, a ñexible shaft connected to one of the space 3| Within the hub 20 providing for free said gearing .andV extending through and con iloating action of the drive cable 2|, when the nected to the weeder rod, and members extend ing from the housing and connected with the frame to permit limited free vertical movement of the 'ground wheel with respect to the frame. ’ parallel bars work up and down over the ground surfaces. `A retaining- washer or cap 32 pre vents the nut 30 from coming out of the hub 20, this cap is held in place by cap screws 33. Sup the axle, gearing Within `the housing and driven 5. A rod We'eder including a frame, a Weeder porting wheels for' supporting the rod vWeeder rod mounted for rotation in the frame, a ground may be used for certain type of Work, I haveY wheel including an axle, a housing supported on shown their'. relative positions by dotted lines. 4 the axle, gearing within the housing and driven I do not wish to be limited to this particular by the axle, a flexible shaft connected’for limited form >ofembodiment as other mechanical com free longitudinal play» to oneof said gearing and binations could be used stillY coming Within the extending through andV connected to the weeder scope of the claims to follow. rod, and members extending from the housing What is claimedto be new is: 1. A rod we`eder including a'frame, a weeding and connected with the frame to permit limited lrod mounted for rotation in the frame, a ground free vertical movement of theground wheel with - > supporting Wheel, a connection between the respect to the frame. v, ~ 6. A construction as defined inclaim 4, Where wheel and frame permitting relatively free ver tical play` of the wheel relative to the frame, and in the members include _a vertical bar and a weeder -rod driving means actuated by a ground housing on the frame through which the barv is wheel and vconnected to the 'weeder rod, said arranged to slide, and'rneans within the frame driving means including an appropriate Ylength housing for guiding the bar during and reducing v » of flexible shafting, said ilexible shafting having the friction of Vits movement. 7. A construction as d_eñned in claim 4, where limited free longitudinal play with respect to the in the members include a bar connected to the wheel driving mechanism: `2. A rod weeder including a frame, a. weeding housing, a second housing connected .to the rod rotatably mounted in the frame, a ground wheel for the frame, a connection intermediate 40 thewheel and frame to permit relative vertical play of the wheel with respect to _the frame, gear ing operated Vby aground Wheel, and a flexible shaft operatedby theYV gearing and connected to the weeder rod, the flexible shaft being mounted ,for limited free longitudinal play with respect to the gearing. 3. A Weeder rod driving means including a 'n . frame through which latter housing the bar ex tends, rollers in the second housing for guiding , the bar in movement, >and vmeans in the second „ housing for preventing tilting ofthe bar. 8. A construction as deñnedin cla-im 4, where in the members include bars arranged in par allel pairs connected at one end for' pivotal move ment to the housing and at the opposite end for „ pivotal movement to the frame. _ CHARLES F. BLOOM.