US 3875811 A
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I United States Patent 1 H 1 3,875,811
Fuller Apr. 8, 1975 1 MULTIPLE-WAY VlBRATOR 3.269.193 8/1966 Tsuchiya et al mm 3. 9 74  Inventor: Oliver C. Fuller, Woodstock. Ill. 966 68 Bodme FOREIGN PATENTS ()R APPLICATIONS  Assigneez Evans Products Company,
Transporation sy [)ivisions hill) l r i i r r Des Plaines. Ill. Primur Examiner-Wesley S. Ratliff. Jr  Filed; Aug. 21, I973 A'Imrney, Agent, or Firm-Bede" and Burgess  Appl. No.1 390,190
 ABSTRACT 52 us. Cl. 74/61 A vibrator mechanism is prvvided which y be used 51 Int. Cl. Fl6h 33/00 for y P p Such 88 Screening aggregates driv-  Field of Search. 74/61 87 ing P Casings actuating trenching plows More particularly the mechanism contemplates changing the  References Ci directions of the vibratory oscillations from a straight UNITED STATES PATENTS line reciprocation to a figure eight" motion, and also changing the plane in which these motions occur. 2,516.335 7/[950 Ncvln, Sr. et al 74/61 3000.278 9/]961 Kaltcncgger 74/6] 3 Claims, 3 Drawing Figures MULTIPLE-WAY VIBRATOR SUMMARY OF THE INVENTION A typical construction of the mechanism involves paralled shafts geared to each other and mounting individual eccentric weights, the weight or weights on at least one shaft being shiftable axially relative to the weight or weights or the other shaft, and the shafts being adjustable angularly with respect to each other by disengaging and reingaging their gears.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a framing or base plate mounting the vibratory elements.
FIG. 2 is a fragmentary top view corresponding to a portion of FIG. 1 but with the parts shifted to provide a different vibratory movement.
FIG. 3 is a section on line 33 of FIG. 1.
DETAILED DESCRIPTION The base 1 mounts pairs of bearings 2, 2 and 4, 4 for parallel shafts 6. 7 respectively carrying interengaged equal gears 9, l keyed to the left-hand ends of the shafts. A pulley II on the other end of shaft 6 is driven by a motor (not shown). An eccentric weight comprising weight members 13 spaced apart longitudinally of shaft 6 is keyed to shaft 6, and an eccentric weitht 14 is keyed to shaft 7.
Rotation of pulley ll rotates the shafts and weights to set up reciprocal thrusts in base 1 which are transmitted as vibrations to the plow or other equipment upon which it is mounted. Gear 9 is pressed by spring 18 against a collar 17 on the left-hand end of shaft 6 where it meshes with gear and rotates the latter and the weights mounted thereon.
By compressing spring 18. gear 9 may be shifted to disengage gear [0 and may be rotated angularly any de sired amount to vary the angular relation of weight l3, l4 to each other and when the gear is released spring 18 thrusts gear 9 into mesh with gear 10 in the new angular relation.
Weight 14 is shiftable lengthwise of shaft 7 and may be positioned as desired so as to be in centered relation to weights 13 or to be positioned closer to one of bearings 4.
A shaft 19 is rotatably mounted in bearings 2 on the base plate and threaded through yoke 15, the termininals 16 of which embrace weight 14 and are apertured to slidably receive shaft 7, thus providing for ready adjustment of weights l4 longitudinally of shaft 7 and relative to weights 13. To facilitate rotation of shaft 19 it is provided at its ends with knurled knobs 20.
With the weights disposed as shown it is a simple matter to vary the vibratory thrust of the mechanism or to vary the vibration from a straight line reciprocation or to introduce stipulated increments of figure eight movements in the plane of the base plate.
1. A vibrating mechanism comprising a base memher, two shafts side by side with individual spaced jourmals on said base member, interengaged gears on said shafts, eccentric weights carried on said shafts, the gear on one shaft being movable axially of that shaft to disengage the gears to provide for relative rotation of the shafts whereby the weight on one shaft is shiftable angularly about the axis thereofirrespective of the weight on the other shaft. and yielding means for reengaging the shafts after their simultaneous rotation.
2. A vibrating mechanism as described in claim I in which the weight on one shaft comprises separate weight members spaced apart lengthwise of the shaft and the weight on the other shaft is positioned between said separate weight members and is shiftable in opposite directions longitudinally of the shaft relative to the spaced weight members on the first shaft.
3. A vibrating mechanism as described in claim 2 including a threaded shaft rotatably journaled on said base member parallel to said other shaft. a yoke threadably mounted on said threaded shaft and having term inals embracing said weight on said other shaft for shifting said weight longitudinally of said other shaft responsive to rotation of said threaded shaft.
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