US1429125A

US1429125A - Road scraper

Info

Publication number: US1429125A
Application number: US549080A
Authority: US
Inventors: David E Burns
Original assignee: HAROLD J MCKINLEY
Current assignee: HAROLD J MCKINLEY
Priority date: 1922-04-03
Filing date: 1922-04-03
Publication date: 1922-09-12
Anticipated expiration: 1939-09-12

Description

n:. E." BURNS.4 v "Row SCRARR.'

APPLICATION m50 APR, v3.13224 Patenteas'eptllwzz I L4- f muem/or @MM 4To all 'whom may cof/weite Patented sept. is, 1922.

DAVID E. BURNS, F GRAND RAPIDS, MICHIGAN, ASSIGNOR 0F N 1li-'HALF To Hamm J. MCKDLEY, GF GRAND RAPIDS, MICHIGAN.

ROAD sesame.

' applicaties 'fuedfsprn 3,

Be it known that I, Devin E. Bienne, a

` citizen of the United S-tetes of-A.n1erica, re-

' pertains-to make and use'the'snme.

siding at :Grand Rapids' in the county of Kent and State 'of Michigan,.have invented certain new/"and useful improvements 1X1 Road Scrapers; and I do hereby declare the vfollowing.to here. 4full, cleanand exact de scriptionof theinvention, such es will en able others skilled' in 'the art to 'which it ap- This invention'j'relates to improvements in road. Scrapers snfl'more particularly to such Scrapers adapted .to be attached to the rsrneof, a motor vehicle, preferably a, motor truck, and its object is to provide asc/repel' which may be quickly attached and readily A:icljustedto any ordinary type of motor truck7 which may be quickly removed when not'A in use, and which will. effectively and smoothly scrape the surface of the road over which the vehicle passes.'

The scraper blade is yieldably held against the road surface when in operative position and the device is provided with. means by which the pressure of the blade upon the road surface maybe graduated and this means is Aalso adaptedto raise the blade entirely from. the lrond surface when so Clesired. Means for raising and lowering the scraper 'cladea-nd also for adjusting the blade either parallel or angularly relative to the road surface is also provided, and the device has various other new and useful feeturcs of construction and arrangement which are hereinafter i'nore fully described and particularly pointed out inthe claims, reierence being had 'to the accompanying drawings, in which:

' Fig. lis a side elevation of a motor truck showing thefroad scraper embodying this invention attached thereto in operative position. v

Fig. 2 is a plan view, diagrammatic in nsmounted,

1922. Serial No.. 549,680..

frame of th'e' vehicle showing the: connecting A device used for this purpose.

Fig. 5 is aront elevation` ofthe scraper also showing portionsiofthe frame of the vehicle. f

Fig- 6 is an enlarged perspective .view of one of the shaft. supporting 'arms amd the adjustablebearingsmounted thereon.

= F1g. 7 is m elevation of a portion of the scraper blade and theshaft on whiohvit is spring.

Fig.l'8 illnstretes s modified A sure spring.

Fig. 9 is a transverse sectional elevation on the line 9-9 of Fig. 5. i

rxn'of presu Showing eens of the pressure Fig. 'l0 isv en enlarged transverse section through 'the roclg shaft. and Sleeve showing thejoressure spring attached there. Figli is en elevation, partly vinfsection' .and with. parts broken away,` shmvingv the tend beneath the lower surface of the frame -members ily-these frame members preferably being ofchannel construction., and clamps 6 are provided which embrace both the brackets 5 and a portion of the frame 1, andV bind.

them together by friction attained through the screws 7.

A plurality of parms 8 are attached to the l under sur-face of. the hanger board 4 and extend downward therefrom. and each erm has Aifnormted thereon. a vertically 'movable bearing block '9, each of which is provided with aclampin screw l() threaded 'in theblock and engaging the arm 8. A rock shaft 11, preferably of tubular construction', extends lcngitudinally beneath han er board being journalled in the vbearing blo ks 9. A plurality of sleeves l2 are 'located upon l the rock shaft 11, each of said sleeves being proper lattached to the rock shaft 11,

provided' with clamping screws 13 threaded in the sleeves and engaging the rock shaft, and a pressure spring 1a is coiled about each sleeve, one end of the s aring being attached to the sleeve, preferab y by being bent inward as at 15, and inserted into a hole in the" sleeve, and the other end of the'spring extends downward and rearward and is attached to the scraper blade 16 by any suitable fastening means such as' U bolts 17 similar to those illustrated.

The scraper blade attached to the rock shaft as above described is pressed against the road surface by means of the springs 14 whenthe rock shaft 11 is rotated in a direction to tighten the springs. The following described means is employed' to rotate the rock shaft 11. A worm gear segment 18 is and a worm 19 located adjacent the upper periphery of the worm gear meshes therewith being {ixed to a. shaft 2() which is journalled in bearings 21 fixed to an arm 22, the said arm having a hub 23 which surrounds therock shaft 11 and a collar 24 fixed to the rock sha-ft retains the hub 23 ,in its position adjacent the hub of the worm gear 18 and thus insures the location of the arm 2Q to retain the worm 19 in mesh with the worm gear. The forks 25 extend upward from the arm 22 embracing the hanger board 4 and retain the arm 22 in upright position.y rThe forks will not permit rotation'of the arm Q2, but they will admit the vertical movement of the rock shaft relative to the `hanger board.

A bracket Q6 is attached to the frame 1 of the vehicle near the driver-s seat and a vertical shaft 27` rotatably mounted in this bracket carries a hand -wheel 28 at its upper end, and a bevel gear 29 at its lower end. Atn-extensible shaft comprising the members 3() and 31 and having the

universal joints

32 and 33 at its `respective ends extends between the shaft 20 on which the worm is mounted and bracket 26'in which the universal joint 33 is journalled, and a bevel gear 84. meshing with the bevel gear 29 transmits the movement of the shaft to the worm 19. The member 3() of the extensible shaft telescopes within the member 31', the member 31 being provided with a plurality of holes through one of which the cotter pin 35 is inserted, the pin also passing through a hole in the member 30 to connect the two members.

The scraper as a unit assembly may be easily fastened to any ordinary motor truck by placing it beneath the frame of the truck and applying the clamps 6. to attach the bracket 5 to the frame and then attaching the bracket 26 in a position convenient to the drivers4 seat. By virtue of the universal joints 212 and 33 and the ,extensible feature of the shaft connecting them. the location 12@L which is of the bracket 26 relative to the scraper assembly may be varied within reasonable limits and yet be made to. fit and function properly. The device is installed so that the scraper blade assumes an anglecrelative to the longitudinal anis of the -Mvehicle and after it has been properly installed the scraper blade 16 is brought into contact with the road surface by rotation of the hand wheel 28 and through its members rotates the rock shaft 11 and increases the tension of the pressure spring 14 whereby the pressure of the blade against 'the road surface may be varied at will and when adjusted it will remain in this position because of thchirreversible quality of the worm and worm gear connection. vThe tension of each individual spring 14 may be regulated by rotating the sleeve 12 to whicu it is connected upon the rock shaft 11 and then clamping the sleeve yto the shaft by theset screws '13. lf it is desired to operate the'truclr for a short time without using the scraper l blade, the rock shaft may be rotated by means of the hand wheel to raise the scraper blade as Iillustrated by dotted lines in Fig. 9. 1t is also easy to remove the scraper assembly by detaching the clamps 6 and disconnecting shaft members'() and 31 and thereby re lieving the vehicle of the Weight and encumbrance of thev device when it is no-t in use.

1t is often desirable to have the scraper blade elevated more at one end than at the other, and to obtain this adjustment the vertically nfovable bearing blocks 9 may beadjusted to the desired position'upon the arms 8 and this adjustable feature also en-lI ables the blade to be adjusted to the proper height to fit vehicles of different dimensions. When the rock shaft 11 is vertically adjusted by moving the bearing blocks 9 on the arms 8, the Worm 19 and Worm gear segment 18 always remain in proper relation and the forks 25 slidc'upor down upon the hanger board 4. A V

.The modified pressure spring construction illustrated in Fig. 8 contemplates the necessity of increasing the spring pressure andutilizes a double spring 14a in place of the single spring before described, this spring 14. having a loop 14h at its middle iortion whichv is attached tothe scraper lade 16 and its respective ends each extend upward and are coiled about a sleeve fixed to the rock shaft 11 similar to the sleeves 12. The pressure springs are preferably coiled about the sleeves in the manner shown, that is one end before attached to the scraper blade, the spring thence extends diagonally upward and forward and thence i-s coiled from front to rear over and about the sleeve.

l claim:

1. A road scraper, comprising a scraper the extensible blade, a shaft above the scraper blade, a'

plurality of springs, each coiled about said shaft andfhavingone end adjustably fastened to the sha-ft' and the other end fastened to the scraper blade, means for rotatably mounting the shaft on va `vehicle and manually operable means for turning the shaft.

2. A road scraper comprising a scraper blade, a rock shaft, a plurality of springs, each coiled about said rock shaft and having one eiid adjustably attached to the rock' shaft Vand the other end' attached to-V the scraper blade, means for mounting the rock shaft on a'yehicle'and means for rotating the rock shaft. 4 l

- 3. A road scraper comprising a scraper blade, a shaft, a plurality of sleeves rotatably adjustable upon'said shaft, .a spring coiled about each sleeve and having one end attached to the sleeve and the other end attached tothe scraperblade means for ro- I tatably mounting the shaft on a vehicle and means for manually turning 4the Ishaft to raise or lower the scraper blade.

4. A road scraper comprising a scraper blade, a rock shaft, a plurality ofv sleeves rotatably adjustable' upon said rock shatt,

a .spring coiled about each sleeve having i one end attached to the sleeve and the other endv attached to the scraper blade, means for mounting the rock shaft on a vehicle, and

means for rotating the rbck shaft.-

5. A road scraper comprising a scraper blade, a shaft above the scraper blade, means for mounting the shaft on a vehicle,` and a plurality of springs each having oney end attached to the 'scraper blade and thence extendingV upwardly and in front ot the shaft and coiled, about the shaft and having its other end fastened to the shaft.

6. A road, scraper comprising a scraper blade, a shaft abovethe scraper blade, means vfor mounting the shaft on a vehicle, a plu- `rality of sleeves rotatably adjustable upon the shaft, a plurality of springs each hav' ing one end attached to the scraper blade and thence'extending upward and in front of a respective sleeve and thence coiled about t-lie sleeve -and attached thereto.

7. Inv a road scraper, a motor'vehicle having a chassis frame including parallel side 'members of channel formation. brackets located one ,under each side member having 4ends located under and against the under said worm gear segment and journalled in bracket connected to the 'hanger boardpalnd.

means tor rotating saidvvorin Jfor thepiirpose described.

'4 *l .I t). A road scraper comprisingr a hanger board, means forY attaching the hanger board to the frame of avehicle, a rock shaft mounted on thehanger board, a scraper blade mounted o'ii the rock shaft, a worm gear segment fixedto the .vock'shait` a worm meshing with said segment and ljournalled in a bracktfconnected to the hanger boa-rd, alongitudiiiallv extensible shaft connected by a universal joint to said worm, a bracket fixed to the frameof vthe motor vehicle, a manually rotatable shaft journalled in said bracket, a bevel gear on said shaft, and a second bevel gear meshing with the first beveled gear and connected by a universal joint to saidextensible shaft substantially :is and y for the purpose described.

li). A road scraper comprising allianger board, a vmeans for attaching thc hanger board to the frame of the vehicle, a plurality of arms depending fromsaid hanger board, a vertically adjustable bearing block on each arm,.a rock shaft journalled in said bearing block, a scraper blade mounted on said rock shaft, a worm gear segment fixed to said rock shaft, a biturcated arm embracing Vthe hanger board and rotatably connected tothe rock shaft, a. worm journalled in said ico' arm and meshing with the `worm gear segment, and means for rotating the Worm for the purpose described.

11. A road scraper comprising a hanger rock shaft, a. Worm gear Segment fixed'to f said roclcshaf't,l a bifurcated arm embracing the hanger board and rotatably connected to the rock shaft, a worm journalled in said arm and meshing with the worm lgear segment, a longitudinally extensible shaft' connected bya universal .joint to said worm, a bracket attached to the frame ot the veict hicle, a manually-'rotatable shaft` journalled in said bracket, a bevel gear on said shaft, a second bevel gear meshing with the first bevel gear and connected by a universal joint to the extensible shaft.

A road scraper comprising a hanger vboard` means for attaching the hanger board to the frame of a vehicle. a plurality of arms depending from said hanger board, a. vertically adjustable bearing block on each arm, a rock shaft journalled in said bearing blocks, a scraper blade beneath the rock Shaft, a plurality of sleeves rotatahly atljustable on said rock shaft. a spring coiled about each sleeve and haring one end attached to the Sleeve and the other exnl attached to thaseraper blade.

lf-LlA road scraper eoinprisin; r a hanger board, means for tletaehahly conneeting the hanger board to the traine of a vehicle. a plurality o arms lepen lin r from said hanger board, a vertically adjustahle hearing block on earl] arm, a rock shaft journalled in Said hearingV hloeli@ a scraper hlznle heneuth the rock shaft, a pluralit)Y of rotatahly atljustahle. sleeves on said rock shaft. a spring.r coiled ahout each sleeve and having-one end attached to the sleeve and the otherenll attachetl to the scraper hlatle` a vworm gear segment fixed to the rock shaft, a hifureatetl arxn elnln'aeing'the hanger hoard and rotatably eonneetetl to theI rook shaft, u worin journalled in the arln `antl meshing with the, worin Igear Segment. a longitudinall)v extensihle shaft eonneetetl 'oy a universal `iointy to the worin. a hraeltet 'fastened to the traine of the vehiele. a manually .votatahle shaft journalletl in the hlarket. a hevel rear on the shaft, aseeolnl hevelagfear meshing! with the first herel gear and :eo'nneetetl hy a universal joint to the saill extensible `Shaft,

ln testimonyv whereof 1 attix my signature.

DAVID Ef I l RNS.