US802544A

US802544A - Road-grading machine.

Info

Publication number: US802544A
Application number: US22038204A
Authority: US
Inventors: Roy E Adams
Original assignee: JOSEPH D ADAMS
Current assignee: JOSEPH D ADAMS
Priority date: 1904-08-11
Filing date: 1904-08-11
Publication date: 1905-10-24
Anticipated expiration: 1922-10-24

Description

No. 802,544. PATENTED OCT. 24, 1905t R. E. L J. DI ADAMS.

ROAD GRADING MACHINE.

APPLIATION FILED AUG. 11. 1904.

2 SHEETS-SHEET 1.

Roy E. Adams.

7 61 Hoz me al mnnsw. n. naman ca, mmwumcemvmns. wAsmuamujv c` No. 802.544. PATENTED OCT. 24, 1905. R. E. a J. D. ADAMS.

ROAD GRADING MACHINE.

APLroATIoN FILED AUG.11. 1904.

2 SHEETS-SHEET 2.

el Hoz/mm3 t I ROY E. ADAMS AND JOSEPH D. ADAMS, OF INDIANAPOLIS, INDIANA;

SAID ROY E. ADAMS ASSIGNOR TO SAID JOSEPH D. ADAMS.

@OAD-GRADING MACHINE..

To f/JZ 11171.07@ it may cm1/cern:

Be it known that we, Roy E. ADAMs and .los EPH D. ADAMs,citizens of the United States, residing` at Indianapolis, in the county of Marion and State of Indiana; have invented certain new and useful Improvements in Roadrading Machines, of which the following is a specification.

, In a road-grading machine the draft is materially lessened by mounting the wheels upon short stub-axles, which are in turn mounted upon horizontal axes, and providing means by which the wheels may be tipped or swung about these horizontal axes which lie in the line of movement of the vehicle, so as to counteract the side thrust of the scraper without dragging the entire machine. Such mechanism has been shown in Reissue Patent No. 10,666, dated December 1, 1885, as applied to two and three wheel vehicles; but the construction shown therein cannot be readily applied and operated upon the front wheel of a four-wheeled grader. Difliculty is also experienced in graders of the type shown in applying the pull to the scraper.

The objects of our invention are to provide an improved construction for operating the swinging axles of the front pair of wheels, to provide an improved means for applying the pulling' force to the scraper, and to provide such improvements in details of construction as may be hereinafter pointed out.

rIhe accompanying drawings illustrate our invention.

Figure 1 is a central vertical section of a road-scraper embodying our improvements; Fig. 2, a plan of the scraper and immediatelysupporting frame; Fig. 3, atransverse vertical section through the front axle; Fig. 4L, a central vertical section through the fifth-wheel, on a larger scale; Fig. a sectional detail on line 5 5 of Fig. 2, on a larger scale; Fig. 6, a detail of the turn-table, and Fig'. 7 a detail of the scraper-support.

In the drawings, 10 indicates the main frame supported at its rear by the rear axle 11 and front wheels 12 and provided at its forward end with a head 18, having a downward extension 111, which practically forms the hingbolt of the iifth-wheel. The fifth-wheel 15 is provided with a central opening' 16, which is larger at its bottom and tapered upwardly to nearly iit pin 14, thus permitting considerable Specification of Letters Patent.

Applicatll led August l1, 1904. Serial No. 220,382.

Patented Oct. 24, 1905.

tilting of the front axle without straining the parts. rI`he1ifth-wheel 15 is supported by any suitable form of front axle 17, to the opposite ends of which are pivoted upon horizontal axes in the line of movement of the vehicle stud-axles 18, upon which the ground-wheels 19 are rotatably mounted. Each of the studaxles 18 is provided with a vertical arm 20,

and the two arms 2O are connected by a link' 21, carrying a segmental rack 22, which meshes with a pinion 23, carried by a shaft 24, rotatably mounted in suitable bearings on the front axle 17. The construction of the front axle thus far described is similar to the construction of the rear axle described and claimed in the patent previously mentioned; butin order to adapt this construction for use in a front axle the followingadditions are necessary: Secured to shaft 24 is a worm-wheel 25, which meshes with a worm 9.6, carried by a vertical shaft 27, journaled in suitable bearings on the front axle 17. Journaled in the center of head 13 and passing through the center of stud 14 is a vertical shaft Q8. rIhe upper end of shaft Q8 is provided with a bevel-gear 29, which meshes with a pinion 30, carried by the forward end of a shaft 31, which shaft is mounted in suitable bearings on the main frame and carried back to a point adjacent the rear of the machine, where it is provided with a crank 32 in convenient position for 0peration by the single operator. Ihe lower end ofA shaft 28 is connected with the Lipper end of shaft 27 by a longitudinally-extensible universal joint. A yoke 33 is pivoted on a horizontal axis to the upper end of shaft 27. Pivoted to the upper end of yoke 33 at right angles to the axis between shaft 27 and yoke 83 is a square shaft 34, the upper end of which telescopes within the square tubular shaft 35. The upper end of shaft 35 is in turn pivoted upon a horizontal axis, preferably at right angles to the axis between shaft 34 and yoke 33, to the lower end of the yoke 36, the upper end of which is in turn pivoted to the lower end of shaft 28 upon a horizontal axis at right angles to the axis between said yoke and the tubular shaft By this means the front axle 17 is perfectly free to swing upon a vertical axis and also to be twisted to the full extent of the lost motion between stud 14 and the fifth-wheel 15 and yet permit the easy swinging of the stud-shafts18 upon their hori- IOO zontal axes at any time by a proper movement of the crank 32. rIhe rear wheels are mounted in the manner described in the patent already mentioned and are independently adjustable.

Forming part of head 13 is a rear yoke extension 13', which carries avertical pin 40, to which is loosely pivoted the forward end of a frame 41. Frame 41 extends back and is provided at its rear end with a downwardly and rearwardly projecting finger or arm 42, which is projected through a carrier 43, transversely adjustable upon a track 44. The rear end of the frame 41 is supported by means of a pair of vertical links 45, (only one of which is shown,) and each of these links is supported upon a crank 46, carried by a shaft 47, which at its rear end is provided with a worm-wheel 48, with which meshes a worm 49, carried by a shaft 50, provided with a large hand-wheel 51, by means of which crank 46 may be swung so as to thus raise and lower the rear end of frame 41. Frame 41 carries near its rear end a'downwardly-projecting stud 52, upon which is loosely pivoted a turn-table 53, said turntable being provided with a flange 54, beneath which extend suitable hangers 55, carrying supporting-rollers 56. The turn-table 53 is very loosely pivoted upon pin 52, and the pin 52 is only intended to take the side thrust of the parts now to be described.

Secured to the under side of table 53 is a frame 57, which forms a diametrical cord for a semicircular pull-bar, composed of an outer plate 58 and an inner parallel plate 59, the two plates being' connected at short intervals by horizontal radial struts 69. The inner plate 59 lies against a post 61, erected from a bracket 62, which is secured at its ends to the frame 41 and passes beneath the semicircular bar. Projecting through post 61 is a horizontal slidable locking-bolt 63, which is adapted to enter any one of a series of notches 64, formed in the lower edge of the plate 59. Pivoted at 65 upon bracket 62 is a bell-crank lever 66, at the elbow of which is pivoted one end of a link 67, the opposite end of said link being pivoted to the bolt 63. Bolt 63 is normally urged forward by a spring 68, and lever 66 has its free end connected to the forward end of a rod 69, which extends back to a point convenient of access of the operator, the arrangement being such that when rod 69 is pulled backward from the position shown in the drawings the heel of the bell-crank lever will be thrown back of and below the pivotal axis 65, and thus prevent the bolt 63 from being accidentally driven forward by the spring 68. Turn-table 53 is provided on its upper side with a segmental gear 70,into which meshes a pinion 71, carried by a shaft 72, rotatably mounted in suitable bearings in frame 41. Similarly mounted on frame 10 and convenient to access by the operator is a shaft 73, and the forward end of this shaft is connected by a longitudinally-extensiblc universal joint 74, similar to the joint between

shafts

27 and 28, with the rear end of shaft 72.

The ends of the two plates 58 and 59 are curved downwardly and joined at their lower ends, and the scraper 74 is pivoted upon a horizontal axis to the lower ends of these plates. In order that the scraper 74 may have a wide rang'e of adjustment, as indicated by dotted lines in Fig. 7, I pivot adjacent each pair of plates 58 and 59 a pair of

links

75 and 76, one of which is shorter than and is nested within the other. The link 75 is provided with a plurality of transverse openings, any one of which may be brought into register with openings 77, formed through the plates 59 69, and adapted to receive a pin 78. The link 75 is of considerable length and rests upon a cross-bar 79. rIhe other link 76 is provided with a toe 76', which prevents itfrom dropping too low and holds it in position to enter freely between a cross-bar 79 and a lower cross-bar 80, so that when the scraper is turned up nearly square in a position where the long links would no longer serve as adequate supports for the scraper the short link will come into action. The cross bars 79 might be omitted and the long link 75 used in connection with the lower holes 81; but in that case these long links would project behind 9 the scraper to such an extent that with the scraper on a sharp horizontal angle the link at the forward end of the scraper would project out beyond the wheels and be likely to be broken off. By providing the two links and the cross-bar 79 the long links are thrown up nearly vertical when the scraper is in its highest position and when the short links come into position for use. The short link is nested within the longer link in such manner that it cannot pass entirely through the link. so that the shorter link cannot become misplaced, but is always in position to enter immediately above the cross-bar 80.

In operation the pull of the team is transmitted through the fifth-wheel to head 13 and from thence through pin 40, frame 41, and post 61 directly to the arc 58 59 60, so that the pull of the team is exerted directly upon the scraper instead of through the supporting turn-table, thus producing a very durable construction. The scraper may be set at any desired angle by withdrawing bolt 63 and turning shaft 73 in the desired direction.

IVe claim as our invention'-V 1. In a road-scraper, the combination with the main frame, and an axle pivoted thereon upon a vertical axis, of a pair of stud-axles pivoted upon said axle upon substantially horizontal axes, supportingwheelsjourn aled upon said stud-axles, and means extending back along the main frame for swinging said studaxles and holding the same in desired positions of adjustment, said means being operable in various horizontal positions of the axle.

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ITIS

2. In a road-scraper, the combination with .the main frame, and an axle pivoted thereon zontal axes, supporting-Wheels journaled upon said stud-axles, a link connecting' said studaxles for simultaneous movement, a vertical shaft passing axially through the vertical pivotal connection between the main frame and mainl axle, and intermediate driving connections composed in part of auniversal joint between said vertical shaft and the link connecting the stud-axles.

3. In a road-scraper, the combination with the main frame, an Vaxle pivoted thereon upon a vertical axis, oi a pair of stud-axles pivoted upon said axle upon substantially horizontal axes, supporting-wheels journaled upon said stud-axles, a link connecting Said stud-axles for simultaneous movement, a vertical shaft passing` axially through the vertical pivotal connection between the main trame and main axle, and intermediate driving connections composed in part ot a longitudinally-exten-l sible universal joint between said vertical shaft and the link connecting the stud-axles.

I. In a road-scraper, the combination with the main frame, ci' a turn-table carried thereby, a scraper carried by said turn-table, a horizontal arc-bar carried by said turn-table, a driving-post carried by the frame and arranged to engage the arc-bar to drive the same, and means for holding the scraper in desired positions of angular adjustment.

5. In a road-scraper, the combination with the main frame, of a turn-table carried thereby, a scraper carried by said turn-table, a horizontal arc-bar carried by said turn-table composed of a pair o'l5 substantially parallel plates and intermediate struts, a drivingpost carried by the frame and arranged to engage the arc-bar to drive the same, and means for holding the scraper in desired positions of angular adjustment.

6. In a road-scraper, the combination with the main frame, of a turn-table carried thereby, a scraper carried by said turn-table, a horizontal arc-bar carried by said turn-table, a driving-post carried by the frame and arranged to engage the arc-bar to drive the same, a bolt arranged to engage said arc-bar, a bellcrank 66, a link 67 connecting said bell-crank and bolt, and means for operating the bellcrank.

7. In a road-scraper, the combination with the mainframe, of a turn-table carried thereby, a scraper carried by said turn-table, a horizontal arc-bar composed of a pair of substantially parallel plates and intermediate struts carried by said turn-table, a driving-post carried by the frame and arranged to engage the arc-bar to drive the same, a bolt arranged to engage said arc-bar, a bell-crank 66, a link 67 connecting said bell-crank and bolt, and means for operating the bell-crank.

8. In a road-scraper, the combination with the main frame, of a supplemental frame 4i. pivoted upon a vertical axis to said main frame, a turn-table loosely supported upon said su j pleinental frame, and carrying a substantially horizontal arc-bar, a scraper carried by said turn-table, a driving-post carried by said supplemental 'frame behind and in engagement with said arc-bars, and means for holding the turn-table in desired positions ol angular adjustment.

9. In a road-scraper, the combination with the main frame, of a supplemental 'frame 41- pivoted upon a vertical axis to said main frame, a turn-table loosely supported upon said supplemental frame, and carrying a substantially horizontal arc-bar composed of a pair of substantially parallel plates and intermediate struts, a scraper carried by said turntable, a driving-post carried by said supplemental iframe behind and in engagement with said arc-bar, and means for holding theturntable in desired positions of angular adjustment.

10. In a road-scraper, the combination with a suitable supporting-trame, oll a scraperblade pivoted thereto, a pair of associated links, one longer than the other, pivoted to the upper edge of said blade, a supporting-bar carried by the frame and supporting the longer of said links, and means adjacent said bar for holding each of said links in various positions of adjustment, for the purpose set -forth.

11. In a road-scraper, the combination with a suitable supporting frame, of a scraperblade pivoted thereto, a pair of links, one shorter than and nested within the other, a pair of cross-bars carried by said supportingframe and each forming a support for one of said links, and means for holding the links in various positions of adjustment with relation. to the frame.

In witness whereof we have hereunto set our hands and seals, at Indianapolis, Indiana, this 15th day of July, A. D. 1904.

ROY E. ADAMS. [L. s.] JGSEPI-I D. ADAMS. [1.. s]

Witnesses: ARTHUR M. Hoon,

JAMES A. WALsH.

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