US2679119A - Auxiliary scraper and loading apron for carry-type excavating scoops - Google Patents

Description

May 25, 1954 RQBB 2,679,119

AUXILIARY SCRAPER AND LOADING APRON FOR CARRY-TYPE EXCAVATING SCOOPS Original Filed May 18, 1943 3 Sheets-Sheet l l l l l l 1 *1 LEI H l l i -&

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May 25, 1954 AUXILIARY SCRAPER AND LOADI FOR CARRY- Original Filed May 18, 1945 3 Sheets-Sheet 2 I jwuclrvfot I F5 77 052 May 25, 1954 2,679,119

F. 5, R083 AUXILIARY SCRAPER AND LOADING APRON FOR CARRY-TYPE EXCAVATING SCOOPS Original Filed May 18, 1943 3 Sheefss-Sheet 5 7 Thai 7 grvucxvvbof the relation of the various instrumentalities in" corporated therein.

Figure 3 is a rear view showing in somewhat more detail the mounting of the machine, and certain hydraulic or other suitable jack means for operating the various parts thereof.

Figure 4 is a fragmentary View of the upper forward end of one of the frame members or the machine, illustrating the portion of a closure supporting arm and stop means provided there- Figure 5 is a fragmentary sectional view taken about on the line 5-5 of Figure 4.

It should be understood that in the description of the machine which here follows, and in the claims appended, the word scraper is used to denote a member or members capable of effecting the dual functions of excavating and leveling.

Referring now particularly to Figure 1, it will be noted that the machine is mounted on rear wheels i, and front wheels 2, the rear wheels being preferably driven from a motor 32 mounted thereabove, by means of suitable transmission gearing 4, not further illustrated, but well known in the art, to rear wheels I to be more particularly described hereinafter.

The motor 3 is mounted on a suitable rear plate or deck member 6, extending transversely of the machine and adapted to have suitably fastened at its outer ends the side members 1, the same constituting the frame members of the machine. As will be noted, these frame members are substantially triangular in shape.

At the lowermost portion 8 of the substantially triangular side frame members "I, a scraper memher 9 is provided likewise extending transversely of the machine, and connected to the side members in any suitable manner. Scraper member 5 is a main or body scraper operable as the machine advances.

Just to the rear of the scarper 9, the body member ID is hinged at H so as to be raised or lowered, as desired, for dumping the contents of the body or returning the body to its dirt receiving position. The raising and lowering of the body I is effected by means of suitable jacks l2, pivotally engaged at |3 with the upper rear portion of the body member l0 and similarly pivotally engaged at M with the rear deck member 6.

Passing now to the means for supporting the front wheels 2 of the machine, it will be noted that adjacent the outer sides of the machine, and. above the wheels, suitable jacks l are provided adapted to have the piston rods I6 thereof connected in any suitable manner to the axles ii of the wheels. The jacks I5 are pivotally engaged at I8 with the upper outer sides of the frame members and in order to maintain the desired position of the wheels upon adjustment of the pistons in the jacks l5, suitable links H! are provided and pivotally engaged at with the housing of the axle I1, and similarly engaged at 2| with the frame members 1.

It will be seen, therefore, that upon actuation of the pistons in the jacks |5 by hydraulic or other suitable means, a raising and lowering of the frame members i, and thus the body I0, is accomplished. It is significant, in view of the provision of separate jacks l5 for the front wheels 2, that the front wheels may be individually controlled as to their relationship with the body l0 to properly maintain the scraper 9 in any desired adjusted position.

In order to provide the necessary fluid or air, as the case may be, the engine 3 is equipped with a power take-oil 22, as seen in Figure 2, adapted to drive a suitable pump 23 to pressurize a tank 24 adapted to deliver the necessary pressure fluid to the jacks l2 and I5. For the control of this pressure fluid, a suitable control panel 25 is pro vided, having a series of control levers 26 thereon, adapted to be actuated by the operator of the machine from the seat 2! provided on the rear deck 6.

As will be seen upon further consideration of Figure 2, the operator is provided with the necessary steering wheel 28 whereby the rear wheels I of the machine may be actuated through conventional steering controls 29, in accordance with well known automotive practice.

At this point reference is made to Figure 3 to more particularly disclose the manner of mounting the rear axle 5. The said rear axle 5 is carried in a housing 39 provided at its end with additional housings 3| adapted to enclose well known universal joint steering knuckle mechanism, and at its central portion with a known type of differential enclosed in a housing 32. Adjacent the top of the housing 32, an extension 33 is provided, adapted to be pivotally connected at 34 with a member 35 attached to the rear deck 5, whereby transverse pivotal movement of the wheels I may take place.

It should be noted, as shown in Figure 1, that the drive from the transmission gearing 4 is accomplished by means of conventional drive shaft 36 in a housing 31, suitably pivotally engaged with the housing 32, whereby the drive may be effected from the engine under the control of the shift lever 38, as shown in Figures 2 and 3.

The drive from the engine 3 to the rear axle 5 is not further here referred to by reason of its being known by those skilled in the art, and since it is of conventional construction.

Referring again to Figure 1, and likewise to Figure 4, the front closure and auxiliary scraper 39 is shown as being substantially arc-shaped in cross section, extending transversely of the machine, and being provided at its lower edge with a suitable scraper 40. The closure 39 is connected at its upper end with the arms 4|, the said arms extending rearwardly into the body portion of the machine, and being provided at the rear ends with roller elements 42, pivotally engaged at 43 with the arms 4|. These roller elements are adapted to move in rail sections 44 formed in the side frame members the said rail sections being provided with overhanging lips 45, whereby to confine the rollers 42 within the rails 44. In order to strengthen the connection of the front member 39 with the arms 4 l, suitable side members 46 are provided, the said side members likewise facilitating the operation of loading the machine, as will be hereinafter pointed out.

In order to operate the front scraper unit, suitable jack members 41 are provided, the pistons of the said jack members being pivotally engaged at 48 with the outer ends of the arms 4|. At the inner ends of the said jack members 41 suitable pivotal engagement at 49 is provided on the frame members 1. The arms 4| of the front unit are provided with cam members 50, adapted to coact with stop or abutment members 5|. The said stop members 5| are in the form of links pivoted at 52 and are provided at 53 with removable bolts, or the like, adapted to be adjusted in one or other of the holes 54 in the frame members 1, for coaction with the cams 50 upon inward movement of the scraper unit trimmer the'actiomof' the j'acksffl? during-the operation ofthe scrap'er llff Abutment members" provided-' at the-' corners or" apices of the substantially triangularmembers T, whereby'tocoa'et'with the" tro'l panelzei previously mentioned.

It may; under I able that the '-fr'ontclosure and" scraper it unit 40, be further: provided with digging teeth not illustrated; to"faci-litate the diggirigactibrioftlfe scraper 40.;

In order to further explain-the invention, ,thee operation of, the various instrumentalities.:.-heretofore referred to will be describedrin their normal sequenceof operation, it b'eing borne-in mind thatzthescrapers 9 and tdprovided-on thez iramemembersIL-and the closure 39, respectively, are adapted ,to. perform the same. functionsin ac-.: cordance with the definitionof:the--word,;scrape erff previously set forth. W

In; operation, the operatonatsthe rear ofithe machine having lowered the front end; ofetha frame 'l -intoithe position shown in full lines in Figure 1 and caused the machine to movesto the right insaidfigure, has accumulated by the action or the scraper 9 a certain amount of dirt illustrated in dotted lines, and denoted A in said figure. Having moved the machine forward to the full extent of the traction available at the rear wheels I, and the said machine no longer being capable of being moved by said traction, fluid pressure having been previously introduced at the lower ends of the jacks 4'! so that the member 393 has assumed the upper position shown in dotted lines in said figure, he thereupon actuates one of the control levers whereby to introduce fluid pressure into the upper ends of the jacks 41 and cause a downcertain conditions; be desir g? in addition to==being provided*with -the scrapen ward picking action of the member 39. This I compels the scraper 4G to engage or enter the ground, and, upon continued introduction of fluid pressure into the upper ends or" the jacks 41, an inward movement of the said scraper ill will be effected, the limit of downward movement of the said scraper being determined in accordance with the position of the bolts 53, and the links 5! of the stops shown in Figure 4.

Having engaged the scraper All with the ground, continued inward movement of the pistons of the jacks 4': will cause the members 39 and it to move towards the open end of the body, and the scraper 4a to performits scraping function, thereby scraping dirt or material and forcing it rearwardly into the body It. If, at this point, enough material has been introduced into the body It to warrant the carrying off of that dirt or material to the fill or place of deposit, this may be done, but if such is not the case, the fluid pressure may be again introduced into the lower ends of the jacks 41, and the unit 39-40 caused to move outwardly into the upper position shown in dotted lines in Figure l, and again operated to effect a picking action, if desired, and the inward scraping movement of the scraper 40 again effected.

However, it will be apparent that the material which heretofore resisted the forward movement of the scraper 9, has been removed into ing operation;

the"b'ody id, andi therefore; the"machine might again-- be" operated" under its-"- tracti've powe through the wheels "I iu'rmove forwardly ari'd cause the scraper-'9 "to' carry outf'a further scrap In other words, the front and rear scrapers may be worked alternately, if-d sired.

It will be apparent that incarrying i out the foregoing operations of the-machihe1 the body-*- is orthe machine wilhbe loaded with apayloadg, and, thereupon, t'eoperator introduces" fluid pressure inte -the upper ends of the jaclrs i ii thereby causingthe pistons therein to vg: downwardly: and'thus raise-the scraper S out of engagement with the earth or groundj the front unit 39-43 having previously been brought into' positidn to' retain-the--dirt' ortli'e materials dug up by the" scrapers "9 and- M3 by assuming a*- positi'on adjacent to 1 the scraper" 9 and closing"- closing position in front of the body lih 'arid by actuation'pfthe jacks--12, the body lib-may be 'causedto 'pivot around -the-=pi-vot i I" to dumpthe dirt or other materials out 'of 'th'ebody;

Ih' accordance wltlrw'ell known pra'ct e? the dumpingoperation may-beaccriiplis'hed t one spot, orspreading oftiiemat r ismay be faci'l'i' tated" by "suitable 'adjustrrfen -of the sc-raper" 9* withrespee't ta the Y d'epth of- 'materi'als desi-r'ed' to be spread or leveled.

It will likewise be apparent that the scraper 46 may be availed of to effect this leveling operation by rearward movement of the machine under the action of reversing the transmission drive by lever 38, or, in other words, movement of the machine to the left, as shown in Figure l, the front scraper being susceptible of adjustable positioning with respect to the ground.

An alternative method of operation of the machine may be that of operating the machine into a position adjacent the materials to be dug, and without effecting the scraping operation by the scraper 9 rely upon the independent scraping operation which may be efiected by the scraper 40, under the controls of the jacks 41, and thus a digging or excavating action may be accomplished regardless of forward movement of the machine to impart a scraping action to the scraper 9.

Another advantageous action obtainable by my construction of scraper lies in the capability of engaging the scraper by downward picking penetration, with the earth, so that when the hydraulic units A! exert rearward pull on the members 39-40, earth may be scraped into the body I0. If the scraping is hard, the member 40 can act as an anchor to assist the power unit 3 to drive the scraper 9 forward, supplementing the tractive effort of wheels 1. Otherwise, the scraper 40 may be pulled rearwards and adequately perform its independent scraping function. No supplemental traction machines to push or pull my scraper are required, and the self-contained power of the scraper is sufiicient to load it completely, and move it at high travel speed to and from the fill.

From the foregoing it will be seen that the jacks 41 form unyielding power devices by which to scraping action of the member 40 in the manner previously described. The digging action of the member 40 and its scraping operation may be effected without any adjustment of the frame 7 upwardly or downwardly in controlling such action.

If the machine is operating on an earth surface inclining downwardly transversely, the independent adjustments vertically of the wheels 2 may tilt the machine at an angle transversely about the axis 34 connecting frame 1 with the rear axle housing 32, enabling the scraper unit 39-40 to remain parallel to the surface and dig and scrape a layer of undug earth of predetermined depth for the entire transverse cutting area of the member 39-40.

The jacks 41 form unyielding power devices for causing the unit 39-40 to dig into the undug earth and maintain its earth penetrating position as it is pulled rearwardly to scrape earth into the bowl I0. The rollers 42 constitute rolling, movable or sliding connector devices movable longitudinally of the frame parts 7 in the guides 44, and pivotally connect the arms 4| to the frame.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

In a vehicle of the class described, in combination, a vehicle frame including spaced side members, travel supporting means mounted on the frame, means for propelling the vehicle, a body carried by said frame, a first scraper on said frame, means for raising and lowering at least one end of said frame whereby to raise and lower said scraper, an auxiliary scraper, spaced arms supporting said auxiliary scraper and pivotally and slidably connected with the sides of said frame, means for moving said auxiliary scraper into a position adjacent to the first scraper, an abutment provided on the frame to limit the upward pivotal movement of the auxiliary scraper, adjustable stop means provided on the frame to limit the downward movement of the auxiliary scraper, and cam means carried by the arms of he auxiliary scraper adapted to engage the stop means when the auxiliary scraper is moved into a position adjacent the first scraper.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 276,303 Sweatt Apr. 24, 1883 1,300,111 Billings Apr. 8, 1919 1,471,302 Wright et al Oct. 16, 1923 1,891,266 Le Tourneau Dec. 20, 1932 2,189,222 Rapp Feb. 6, 1940 2,198,087 Moore Apr. 23, 1940 2,249,356 Goodman July 15, 1941 2,252,763 French Aug. 19, 1941 2,306,066 Le Bleu Dec, 22, 1942 2,328,715 Drott Sept. 7, 1943 2,396,287 Robb Mar. 12, 1946 2,418,813

Anderson Apr. 15, 1947

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