US894346A - Rolling tamper. - Google Patents

Description

No. 894,846. PATENTED JULY 28, 1908. G, ROSS & s. P. DEAL.

ROLLING DAMPER. V APPLIOATION FILED JAN.31,1908.

2 SHEETSSHEBT 1.

PATENTED JULY 28,1908

G. ROSS & s. P. DEAL ROLLING TAB L FER.

APPLICATION FILED JAN. 31,. 1008.

GEORGE ROSS AND STEPHENF. DEAL, OF KANSAS CITY, MISSOURI.

ROLLING 'IAMPEP.

Specification of Letters Patent.

Patented July 28, 1908.

Application filed. January 31, 1908. Serial No. 413,708.

To all whom it may concern:

Be it known that we, GEORGE Ross and STEPHEN F. DEAL, citizens of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Rolling Tampers, of which the following is a specification.

This invention relates to rolling tampers of skeleton type whereby he earth or other substance may be tamped from the bottom upward in order to pack the same more effectually than is possible with the. ordinary tamping roller, and our object is to produce a machine of this character, constructed in sec-- tions, each section turning or rolling separately upon a common axle or shaft, which is self-cleaning and of simple, strong, durable and cheap construction.

To this end the invention consists in certain novel and peculiar features of construction and organization as hereinafter described and claimed; and in order that it may be fully understood reference is to be had to the accompanying drawings, in Wl\1Cll- Figure 1, is a side view, with the inner transporting wheel omitted, of a rolling tam pcr embodying our invention, as arranged to be moved or transported inoperativcly from one point to another. Fig. 2, is a vertical section on line 11-11 of Fig. 1. I Fig. 3, is a detail perspective view of a portion of one of the. tam ping wheels or members.

in the said drawing, 1 indicates an axle and 2 av pair of carrying wheels for convenicncc in transporting the machine from one point to another and adapted to be removed when the actual lamping operation is being performed.

3 indicatesa tongue secured byaniirvertcd- U shaped bracket 4 to the center of an arch, said arch preferably consisting of two inverted angle bars 5, pivoted at their lower ends on axle 1 and connected at their upper ends by a. bridge plate 6, this sectional arch being provided in order to permit of the proper assemblage of underlying parts here inaftcr described. I Y

Jourualml separately and each turning loosely upon the axle are the ta mping members, each member consisting ofa peripherally toothed wheel comprising a hub 7, spokes 8, rim 9, of triangular form in crossseclion and tong teeth 11) projecting outward from the oblique faces of the rim, the teeth of one face being dis osed alternately with'respect to the tcet i of the other when the wheel or member is viewed from the side.

The peripherally toothed wheels or members are arranged or assembled side by side within the arch and where the machine is of considerable width a draft bar 11 is pivotally secured at its rear end to the axle between the innermost pair of wheels or members, said draft bar beingformed at its front end by preference with an upwardly projecting arm 12 terminating in a forwardly projecting portion 13 bolted as at 14 to the tongue.

A pair of draft bars 15 are pivoted at their rear ends on the axle at the cute sides of the arch and are held upon the axle by collars 16 secured in place by set screws 17. The draft bars 15 from a point in about the same vertical plane as thefront end of the draft bar 11, converge upward and forward and are bolted at 18 to opposite sides of the tongue. I

19 is a tie rod extending through draft bars 1] and 15and engaged at its ends by nuts 20, and pivoted on the tie rod 19, at opposite sides of the draft bar 11, is a clcvis 21 to which the draft animals are hitched or other motive power is coupled, it being understood that, if a team is not used, the tongue may terminate at the front end of the draft bars It will also be noted that theclevis is so pivoted that the pull tends to lift and thus avoid the imposition of the weight of the tongue upon the necks of the team if employed.

In practice after the wheels 2 are removed, the machine .is drawn along the road or street and tamps the loose earth or other substance uniformly "from the bottom upward, that is the teeth of the tamping wheels or members being spaced apart tamp in spots and on each subsequent passage press untampcd portions down upon that previously tampcd, repeated passages of the machine thus gradually superposing and compressing together what may be termed tampcd sections or layers of the earth or other substance, so that eventually it is packed hard from the bottom upward as distinguished from the action of a plain or unbroken surfaced roller, which compresses from the top downward so that as the depth increases the density of the packed earth or other substance diminishes d ownw ardl y.

The taniping wheels or members are journaled on the axle for thc purpose of facilitat .ing the arch sectional one 1 iug the turning of the machine and also to permit the same to be turned on the crown or other part of the read without tearing it up, which is the invariable consequence of a short turn made by a Wide-toothed or other roller, as with such a toothed roller all of the teeth move together in the same direction and as its teeth at the outer side of the turn must turn or travel the longest distance there is a dragging action Which tears upthe surface of the road, and likewise in turning With a Wide smooth roller the same effect is had because the outer end has a greater distance to travel than the inner end. With the tamping ollcr having independently rotatable members this dilliculty is not encountered, as the outermost Wheels or members on the turn may turn more rapidly than the innermost to compensate for the increased distance they travel, so that in actual operation the machine tamps as it turns. It will also be noticed that When the machine is Ul'lid With. one of the Wheels or members oriuiiig the main support of the same, the

pivot, the rollers or members at oneside of the pivot turning in one directionor for Ward and those at the opposite side in the opposite direction or backward, on the axle, so that even in malcingva turn as short as contemplated in the above described action the machine will tam) rather than tear up the surface of the road. It will thus be seen that by making the Wheel or members nar row and. independently rotatable, the ma chine can be of any desired width as a Whole and yet be capable of turning easily upon earth or other substance of any character and Without injury to the same if already tamped.

The necessity of having the arch of sectional construction to permit the parts to be prop" f assembled applies of course, to the removal of said parts, as With a solid arch over the Wheels or members and upon the axle'it would be necessary to remove the latter before the members could be Withdrawn from theiroperative relation with respect to the arclfbr the latter moved from its osition over the Wheels or members. By lavside can be sli ped oil the axle to permit one or all of the W reels or members to be removed in the same man- For convenience in tamping close up to the vertical face of a curbing or Wall of greater height than. the axle, the collar 16 can be loosened and the axle slid until the end at the side corresponding to the curb or 'all is flush With the corresponding collar.

A Wheel or roller composed of a plurality of members has a further decided advantage over solid or toothed rollers in that, because of the independent rotatable action of the sections, the loose earth or substance upon which they operate cannot stick and accuturn can be made With such roller or'member' draft attachments mulate upon their peripheries and evontu allj embed the teeth to such an extent that they could not pro erly perform their tamping function, which fact is also true of a solid roller. Furthermore by having rims 9 of triangular form any earth or its equivalent picked up by the teeth and forced inward thereon is acted upon by said rim as a Wedge, this Wedge action tending to split or separate such earth and effect its dislodgment from thewheel or member.

From the above description it will be apparent that We have produced a rolling tamper possessing the features of advantage enumerated as desirable and We Wish it to be understood that We do not desire to be restricted to the exact details of construction shown and described asobvious 1nodiiications Will suggest themselves to one skilled in the art. 1

Having thus described the invention What We claim as new and, desire to secure by Letters-Patent, is:

1.'In a rolling tamper, an axle, suitable draft attachments connected thereto, and a plurality of "toothed Wheels journaled upon said axle and each consisting of a hub portion, a rim connected thereto, and a plurality of teeth surrounding and projecting outward from said rim and having their outer ends forming substantially flat tamping faces disposed approximately concentrically of their axis and adapted to perform a temp ing as distinguished from a cutting action.

2. In a rolling tamper, an axle, suitable draft attachments connected thereto, and a plurality of toothed Wheels journaled upon said axle and each consisting of a hub portion, a rim concentrically surrounding the same and of outwardly tapering or Wedge-like form, and a plurality of teeth projecting outwardly from each tapering face of the rim and having their outer ends forming substantially flat camping faces or surfaces.

3. A rolling tamper, comprising an axle, an arch pivoted thereto, a tongue secured to and projecting forwardly from the arch, a pair of draft bars pivoted at their rear ends to the' axle and extending forwardly there from and secured at their front ends to the tongue, a plurality of toothed Wheels journaled upon the axle and Within the arch, a draft bar pivoted on the axle between the innermost Wheels or members and secured at its front end to the tongue a tic-rod extending'through said draft bars forward of the Wheels or members, nuts engaging the ends of said tie rod, and a clevis bearing a pivotal relation to and projecting forward from the tie rod about midway its length. 4. In a rolling tamper, an axle, suitable plurality of toothed-Wheels journaled upon said axle and each consisting of a hub connected thereto, a

portion, a rim concentrically surrounding the same and of outwardly tapering or wedge-like form, and a plurality of teeth projecting outwardly from each tapering face of the rim and having their outer ends forming substantially flat tamping faces or surfaces, and a seat-supporting arch mounted on the axle and bridging and inclosing the.

upper portions of said Wheels.

5. A rolling tamper, comprising an axle, an arch pivoted thereto and comprising a pair of angle plates, and a'bridging plate connecting the angle plates, a tongue secured to the bridging plate, a pair of draft bars pivoted to the axle at their rear ends and secured to the tongue at their front ends, a plurality of peripherally toothed Wheels or members journaled on said axle within the arch, and carrying Wheels journaled upon the axle outward of the arch and draft bars and of greater diameter than the peripherally toothed Wheels or members.

6. A rolling tamper, comprising an axle,

an arch pivoted thereto and comprising a pair of angle plates, and a bridging plate connecting the angle plates, a tongue secured to the bridging plate, a pair of draft bars pivoted to the axle at their rear ends and secured to the tongue at their front ends, a plurality of peri herally toothed Wheels or members journafed on said axle Within the arch, a draft bar pivoted at its rear end to the axle inthe vertical plane of the longitudinal center of the tongue and secured at its front end to the latter, and a transverse tie-rod connecting the draft bars together forward of the toothed Wheels or members.

In testimony whereof We affix our signatures, in the presence of two Witnesses.

GEORGE ROSS. STEPHEN F. DEAL.

Witnesses: H. C. RODGERS,

G. Y. THORPE.

Images