US2511589A - Machine or apparatus for surfacing roads - Google Patents

Description

June 13, 195@ G.- JAEGER MACHINE 0R APPARATUS FOR SURFACING ROADS 2 Sheets-Sheet 1 Filed Nov. 27, 1944 la Hi @42- INVENTOR. Gebhara Jaeger W I arm TTORNEYS June 13, 1950 s. JAEGER MACHINE OR APPARATUS FOR SURFACING ROADS 2 Sheets-Sheet 2 Filed Nov. 27, 1944 INVENTOR. Gebhard Jaege/r WWW TOPNEYS Patented June 13, 1950 MACHINE R APPARATUS FOR SURFACING ROADS Gebhard J aeger, Columbus, Ohio, asslg'nor to The Jaeger Machine Company, Columbus, Ohio, a

corporation of Ohio Application November 27, 1944, Serial No. 565,305

6 Claims. (01. 94-45) My present invention relates to a machine or apparatus for surfacing roads, such as new roads where forms are used or for resurfacing the original road surface. It has to do more particularly with an oscillating compactor which is adapted to be associated with the screed or screed unit of any conventional type of machine or apparatus of the foregoing character.

One of the objects of my invention is to provide an oscillating compactor unit which is adapted to be used directly on the forward face or portion of a screed, such as a fixed, dead, or non-oscillating screed.

Another object of my invention is to provide a compactor of the oscillating type which is formed in two sections constituting two upright plates mounted end to end which are adapted to be moved at high speed endwise and up and down relative to one another and in unison.

A further object of my invention is to provide an improved compactor unit comprising two oscillatable plates positioned end to end, which plates are adapted to have imparted thereto end-. wise motion lengthwise of the screed, which motion results in a wiping action upon the surface to be finished.

Another object of my invention is to provide a compactor of the foregoing character capable of being oscillatable at high speed without impair-. ing the operation of the machine or apparatus of which it forms a part.

Another object of the invention is to provide a machine or apparatus of the foregoing character in which the screed and oscillating compactor are capable of adjustment angularly with relation to the road surface and wherein the screed may be readily adjusted to the desired crown.

A further object of my invention is to provide an oscillating compactor Which, in operation, serves to crowd out stones or other objects which might tend to interfere with the proper functioning or operation of the apparatus.

Another object of my invention is to provide an oscillating compactor which is associated with a screed unit and which has a pair of vertically disposed plates or blade members having endwise movement in opposite directions lengthwise of the screed to produce a wiping action upon the surface to be finished by the screed and also up and down movement at high speed to effect the compaction of the material immediately preceding the engagement of said material by the screed.

A further object of the invention is to provide an improved oscillating compactor formed in two sections capable of high speed up and down and endwise movement lengthwise of the screed in association with a screed of the dead or nonoscillating type whose forward or lead portion is higher than its rear or trailing portion.

Another object of my invention is to provide an oscillating compactor of the foregoing character which is of relatively simple construction and which may be applied to a screed with ease and facility.

Generally speaking, the machine or apparatus of my invention consists, preferably, of a power driven tractor unit, a screed unit having preferably, a non-oscillatable or dead screed drawn b the tractor unit, and an oscillating compactor formed preferably in two sections which is mounted on the forward or lead end of the screed, which sections have imparted thereto up and down and endwise movements in opposite directions in unison lengthwise of the screed, and power means preferably associated with the screed and drivingly connected through eccentric connections with the sections of the compactor to impart thereto the desired oscillating movement at high speedsuch as from approximately 1000 to 1500 R. P. M.

The foregoing and other objects and advantages of my invention will be apparent from the following description and appended claims when considered in connection with the accompanying drawings forming a part of this specification wherein like reference characters designate corresponding parts in the several views.

In said drawings:

Fig. 1 is a side elevational view, partly broken away, of a machine or apparatus embodying my invention.

Fig. 2 is an enlarged vertical sectional view, partly in elevation and partly broken away, taken substantially along the line 22 of Fig. 1, looking in the direction of the arrows.

Fig. 3 is a horizontal sectional view taken substantially along the line 33 of Fig. 2, looking inthe direction of the arrows.

Fig. 4' is an enlarged fragmentary detail perspective view illustrating the relationship of the central portion of the oscillating compactor of my invention with the material being applied to the road bed.

Fig. 5 is a detail front elevational view, partly broken away, of a fragment of the compactor and screed; and showing the compactor sections, blades or plates in their closed and lowermost position; and

Fig. 6 is a view similar to Fig. but showing the sections or portions of the oscillating compactor in different positions.

Before explaining in detail the present invention it is to be understood that the invention is not limited in its application to the details of construction sand .arrangement of parts illustrated in theaccompanying drawings, since the invention is capable of other embodiments and of being practiced or carried out in various ways. It is to be understood also that thephraseology or terminology employed herein is 'for the purpose of description and not of limitation, and it is not intended to limit' the invention claimed herei beyond the requirements" of theprior art.

Referring now particularly to the drawings, in Fig. 1 thereof there is showmas-a'whole-atlfl a power driven tractor unit, a trailing screed unit, shown as a whole at H, and an oscillating compactor unit, shown as a whole at I2.

' The: screed unit it! is connecte'dinany suitable manner to the rear end of the tractor unit i0 :so asto be -drawn:along over the surface by said tractor unit. The screed unit I I, at'its lower :portion, comprises a pair ofspaced channels (3 which carry'cross bars !l4'-which latter support adjusting rods secured at their lower ends to --angles'l-'6 carried:by thescreed member li-l. The :upperends of'the rrods- Iii-are threaded and extend through bearing sleeves BIB which are supported by the cross bars [4 and which carry nuts l e-engaging thesleeves; The rods i5landr-nuts l9 provide means for adjusting thesscreed member I'EI :to the desired crown. Additional means,

shownas a whole a't 21l, seeiFig.:3,-arezprovided at-opposite endsof' thechannelsl3iand serve to tilt or adjust the screed 'l-| angularly with relation to *the surface. The forward-or lead end: of the screed is normally higher than its rear or following portion. These adjustments and the means for effecting Ithem are substantially the same as those disclosed in the' copending applicationo'f Ober't Mandt and Arnold S. Millikin, 'Seria lNuznber 565,306, :now'-Patent'No..2A-73;961.

The screed 'IT is provided-at its forward edge with a reinforcing angle 2| which extends "the full length of the screed. The forward or upright flange of theangle 2 provides a-wear'platezfor the oscillating compactor to be discussed-in detail -blow.

The upper flanges of the channels I3 carry cross bars 22', four such being :shown in Figs. 2 and 3. Thecross bars'zz carryzat their forward ends dependingbearing brackets '23 which support pivot pins 2 Each of'ithepivot. pins 24 carries a depending flink or pendulum 25 which is conn'ected at its lower end :hy'a-pin 2'4; to the portions or sections l2a of the oscillatingtcompactor unit :2. Thus, thesections or plates 1|?a of the oscillating compactor unit are suspended t-from' the screed unit for oscillating'or pendulum-- like movement inopposite directions lengthwise o'ffthe screed l l andcrosswise 'ortransversely of the machine.

Each of the plates ormembers' [2a is'provided in its-outer "face and at its inner end with a bevelled portion P21), see particularly Fig. 4. These bevelled portions 'I2b,-when the plates [2a are moved toward one another, cooperate to crowd out stones or other objects which might tend to interfere withthe proper functioning of the apparatus.

Sui-table means is provided for oscillating the plates or members 1211 of the compactor so as to impart to said members both up and down and endwise movement. Such means, as shown, comprises an electric motor 21 mounted in suitable manner upon the channels I3. The motor shaft carries a pulley 28 which is drivingly connected with a larger pulley 29 through the medium of a drive belt or chain 30. The pulley 29- is mounted upon a horizontal :driven shaft 3| which is journalled in suitable bearings in the channels 13. The driven shaft 3| carries at its forward end a pair of cam members or eccen- .trics.32 .each.-of which has a connecting rod 33 .carrying on its outer end a concentric connection or member 34. Each of the members 34 is mounted upon a short shaft 35 carried by a bracket or support 36 which is mounted upon the upper portion of the compactor plate I2a .and secured thereto by bolts or the like 31. It will be understood that one such bracket 36 is rigidly attached to each of the plates IZa and that the eccentrics or cranks 32, 33, 34 connect the driven shaft "3| "with the =oscillatable plates-12a.

ed upon the forward end of the screed unit in anyzsuitable'manner, as b -brackets 39,'see Fig. 3. The lower end of the guard plate extends inwardly and rearwardly at 38a'and terminates adjacent the front face'of the oscillating "plates 42a. Thisguard or plate 38 serveszas means for pushing the loose material ahead and protects 'the mechanism for operating the oscillating compactor members 12a.

Floating side plates or forms 40 are mounted upon'thezmachineat opposite ends of the screed :unit lrl. lhese plates, asseen in Fig. 1,-arepprovided with vertical slots '41 with which bolts 42 "cooperate to permit them to have free up .and :dowmrrrovement-over the uneven road-surfaces at opposite sides of the'machine-beyond and adjacent to theends of-the screed unit. The plates 40 provide means movable'with the machine for de- "terrnining-.thev side-edges of-the newly laid mate- .rial. The-screed ll extends throughout the entire width or space between the forms or plates 40. With all known prior art machines wherein the screeds themselves were oscillated, the screeds could' not be long enough to bridge the space between the side plates or forms, there being spaces 'left between their ends and said 'side plates or forms. For this reason, finishing operations were required to be performed on the edgesof the new surface to correct the irregular 'or uneven edges of said surface.

The power means, namely the electric motor which is operatively connected to the plates or members |-2a of the oscillating compactor unit throughthe driving connections above-described, serves to move or oscillate the members In =endwise toward and away from one another lengthwise -of the screed H, the eccentric or crank connections and the depending support- .ing links or pendulum-like connections to the plates, imparting to said plates a combined up and down and endwise motion in unison and at high speed, the speed ranging from approximately 1000 to 1500 .R. P. M. This oscillating or swinging movement of the compactor members performs a wipingoperation on the surface of the newly laid material and the up and down movement in addition to the endwise movement causes 'a compaction of said material. As pre viousty stated, the bevelled portions l2b in their movement toward one another crowd out stones or other objects which might have a tendency'to enter :the space between ::the members IZa.

A: stationary guard plate orshield 3 B is mount- While I have shown one preferred form of mechanism for operating the oscillating compactor of my invention, it will be understood that other mechanism may be employed for elfecting the necessary and desirable oscillating movement of the plates or sections of the compactor.

Having thus described my invention, what I claim is:

1. In a road surfacing machine, a screed unit, said screed unit including a dead screed member, side form plates mounted at the ends of said screed member, compactor plates supported from said screed unit in end-to-end relationship at the forward side of said dead screed member within said side form plates for engaging and compacting material as the machine moves forwardly before the material reaches said dead screed member, supporting members suspended from said screed unit and connected to both ends of each of said compactor plates for suspending said plates for bodily swinging movement in vertical planes transversely of the machine; said compactor plates in one of their relative positions having their adjacent inner ends substantially in contact and being of such length that their outer ends are spaced from said side form plates, and means for oscillating said compactor plates to produce bodily swinging movement thereof relative to said dead screed member in the vertical planes and to cause the adjacent ends of the compactor plates to alternately move away from each other and then towards each other and to cause simultaneous movement of the outer ends of said compactor plates towards and from said side form plates.

2. Structure according to claim 1 wherein said side form plates are supported by bolt and slot connections from the screed unit for vertical floating movement directly adjacent the ends of said dead screed member.

3. Structure according to claim 1 wherein said compactor plates have cooperating beveled edges on their forward faces at their inner adjacent ends which engage stones tending to enter rearwardly between said ends and deflect them forwardly.

4. Structure according to claim 1 including a guard plate supported by the screed unit and extending from side form plate to side form plate and overlapping the upper portions of said compactor plates.

5. Structure according to claim 1 wherein the suspending means for each compactor plate includes a pendulum link at each end of each plate having its lower end pivoted thereto and its upper end pivoted to the screed unit.

6. Structure according to claim 5 including power means for oscillating the plates in unison and at high speed, a power driven shaft connected to said power means and adapted to be driven thereby, and eccentric connections between said driven shaft and each of said plates.

GEBHARD JAEGER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,306,353 Reynolds June 10, 1919 1,386,348 Maxon Aug. 2, 1921 1,467,243 Fitzgerald Sept. 4, 1923 1,619,083 Maxon Mar. 1, 1927 2,138,828 Barber Dec. 6, 1938 2,199,074 Jackson Apr. 30, 1940 2,241,299 Finley May 6, 1941 2,244,297 Heltzel June 3, 1941 2,248,247 Nichols July 8, 1941 2,254,743 Jackson Sept. 2, 1941 2,332,687 Baily Oct. 26, 1943 2,351,592 Barber .1 June 20, 1944

Images