US1432855A - Rotary scraper - Google Patents

Description

E D HARRIS JR ROJARY SCRAPER.

APPLICATION FILED 05c. 13, I919. 1,432,855..

I Patented Oct. 24, 11922.

2 SHEETS-SHED x.

E. 1:]. HEFII'i'LIK w oz E. D. HARRIS, JR. RQTARY SCRAPER. APPLICATION FILED DEC. 13', 1919.

Patented Oct 24, 1922.

2 SHEETSSHEE'I 2.

I KINVENTOR.

Patented Get. 24, 1922.

Elma an:

EBENEZER D. HARE/IS, J 1 OF DENVER, COLORADO.

ROTARY SCRAPER.

Application filed December 13, 1919. Serial No. 844,509.

useful Improvements in Rotary Scrapers;. and I do declare the following to be a full,

clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accom panying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in scrapers of the class used in connection with road work and excavation, and of the class which are drawn by horses or traction, which are hitched or connected to drawbars with which the scoop is provided, handles extending rearwardly for use by the operator or man in charge.

My object is'to provide a construction of this-class in which the scoop or body member is pivotally connected, both with the drawbars and the handles in the rear.

the drawbars and handles being so connected with the scoop or body that normally there is a tendency for the scraper when loading to tip forward by reason of the engagement of the front edge of the scoop with the ground. In'order to overcome this normal tendency, a latch construction operable from the handles or from a single-bar extending re'arwardly, and carrying means for releasing spring-actuated latches, which normally lock the shovel or body member against rotary movement, is provided. In this event, it is only necessary to release the latches which maintain the scoop in the loading position, in order to allow the latter to dump, which will be automatically accomplished. If it should be desired, the 0perator may lift slightly upon the handles or handle before releasing the latches, but it is the intention to have the dumping absolutely automatic when the latches are released.

Again, these same latches engage notches or recesses in parts stationary with the scoop when the latter is in the dumped position, but as the heavier part of the scoop is then forward, the latter will move into the loadingposition as soon as the latches are released for'the purpose. In this way it is necessary only for the operator to attend to the releasing of the latches, since these latches are spring-actuated and automatically return to the latched position as soon as the scoop is properly arranged or positioned.

Having briefly outlined my improvement, I'will proceed to describe the same in detail, reference being made to the accompanying drawing, in which is illustrated an embodiment thereof. In this drawing:

Fig. 1 is a perspective view of a scraper equipped with my improvement, showing the same in the loading position.

Fig. 2 is a similar view, showing the same in the dumped position.

Fig. 3 is a perspective view, illustrating a modified form of construction.

Fig. 4 is a side elevation on a larger scale than Figs. 1 and 2, looking at one side of the scraper, which is largely broken away.

Fig. 5, is a section taken on the line 5-5 Fig. 4, viewed in the direction of the arrows.

Fig. 6 is a section taken on the line 66, Fig. 5, looking toward the right.

Referring first to the form of construction shown in Figs. 1, 2, and 4 to 6, inclusive, let the numeral 5 designate the scoop or body of the scraper, each side 6 of which is pro vided with a sort of hub 7, having parts 8 and 9 on opposite sides which are provided with notches 10, adapted to receive latches 12, with which rods 13 are provided, these rods being spring-actuated to normally maintain the latches in engagement with the notches in the parts 8 or 9, as the case may be. Asshown in the drawing, the rods 13 are mounted on handles 14, each rod being connected with a handpiece 15, pivotally connected as shown at 16 with the adjacent handle bar 14. Each rod 13 passes through a perforated guide 17, fast on the handlebar, and is provided with a stop 18, which is also perforated to allow the rod to pass through the stop as well as the guide 17 on the handle bar. A spiral spring 19 is located between the stop and the guide, whereby the rod is spring-actuated, to hold the latch 12 in position to engage the recess 10 of the part 8 or 9, according to the position of the scoop, as heretofore explained. The forward extremities of the handle bars 14, as well as the rear extremities of the drawbarsfQO, are pivotally connected with journals 21, with which the discs 7 are provided. As shown in the drawing, the rear extremities of the drawhars are provided with housings 23, which have inwardly proiecting parts 24: and 25, between which the forward extremities 26 of the hand-bars are located, thus limiting the movement of the hand-bars with reference to the drawbars. It should be understood, however, that the parts 2% and do not extend into the path of the parts 8 and 9 or the discs 7, since the parts 7, 8 and 9 rotate with the scoop. As shown in the drawing, the parts 8 and 9 are cast integral with the discs 7, but extend l aterally slightly beyond the disc, as best illustrated in 5. This is for the purpose of allowing ample room for the latch rods 13, the inner portions of the handle bars being bent outwardly, as shown at 27, the bent parts being perforated to receive the latch rods, the bent parts 27 being in alignment with the members 8 and 9, containing the notches 10. In this form of construction the scoop will maintain the position illustrated in Fig. 1 until it is loaded. and as soon as this occurs the operator will press the handpieces 15. carried by the handle bars, sutliciently to release the latches 1.2 when the scoop will move to the dumped or unloaded position (see Fig. 2). As soon as this,occurs the latches 12 will engage the notches or recesses 10 of the parts 9, when the scoop will be locked in the dumped position, and may be moved along in this position until it is desired that it should assume the loading position, when the operator will again press the handpieces 15 toward the handle bars, which will release the latches and the scoop will return automatically to the loading position by virtue of the fact thatthe scoop portion forward of the journals when in the dumpingposition is heavier than that in the rear. However, if it should be necessary at any time. either when the scoop is in-the loading or dumped position, the "movement of the scoop may be facilitated or helped by lifting slightly upon the hand bars before releasing the latches.

In the form of construction shown in Fig. ployed. The scoop 29, however, is provided with a ll-shaped frame 30, consisting of a top-bar 31, and two downwardly extending or vertically disposed parts 32, having offsets 33 perforated to receive rods 3 .1., which carry latches which engage either of two notches 35, formed in discs 'or reinforced parts 36, with which the opposite sides of the scoop are provided. The lower portions 37 of the parts 32 are-pivotally connected with journals 38, formed on the notched members 36. The draw-bars 39 are also pivotally connected with the said journals. The rear ends of the draw-bars 39 have :a housing 4.0, equipped with projections 41 and 42, between which the parts 37 .ezgtend,

a single hand-bar 28 only is em allowing a limited play for the said parts between the said projections. The upper extremities of the latch rods 34 are pivotally connected with arms 43 of bell crank levers, which are fulcrunied as shown at 44, their opposite arms 45 being respectively connected with rods d6, whose inner extremities respectively pivotally engage arms 47 and 48 of a lever 49, pivotally connected with the top part 31 of the frame. 30. A rod 50 is pivotally connected with a third arm 51 of the lever 49, the outer extremity of the rod 50 being .pivotally connected as shown at 52, with a handpiece 57, the latter being pivotally connected with the handbar 28, as shown at 58. This rod passes through a guide lugbt, fast on the bar .28, the rod being provided with a stop 55 between which and the guide aspirail spring 56 is located. This spring serves to maintain the lever .49 and the levers 4A in such position as to maintain the latches in en.- gag'ement with either set :of notches 35 of the parts 86. i I

rlssuming that the scoop is in the loaded position (see Fig. 3 when it is desired to dump it. the handpiece 57 is pressed toward the handbar, which movement actuates the rod 50 to release the latches through the Finedium of the mechanism heretofore described. The scoop will'then assume the dumped position, when the latches will re-engage another set of recesses 35. Then, when it is desired that the scoop should assume the loading position, the handpiece 5? is again actuated when :the scoop will automatically assume the proper position.

It may be assumed that the latches 0f the construction shown in Fig. '3 are substantially the same as in the other formofconstruction, reference being made particularly to 6 where the lower extremities of the latch rods are provided with latches 12. The two sets of recesses 35 will be required in the form of construction shown in Fig. 3, the same as in the other forms 'of construction.

I claim r 1. A. scraper having a scoop whose opposite sides are provided with parts having journals, pull-liars pivotally connected with said journals, hand bars also pivotallyconnected with the journals, the rear extremr ties of the pull-bars having housings provided with parts extending laterally there from on opposite sides-of the handbars to limit the independent movement of the latter 'in both directions.

2. Ascraper havinga scoop whose oppos side parts are provided with parts having journals, .pull bars pivotallyconnected with said journals,'a U-shaped bar pivotally con nected with the journals, -a.-lost motion .connection between the endsof the ,pull .harand the ends of the .U-shaped bar, rmembers isecured to the opposite sides of the scoop and provided with oppositely disposed notches,

'sarin actuated latches normall en a in l c y a: c

said notches, and rods carried by the said U shaped bar and connected. in operative relation with the latches for releasing purposes.

3. 'A scraper having a scoop whose opposite parts are provided with parts having journals, pull bars pivotally connected with said journals, a U-shaped bar pivotally connected with the journals, a lost motion connection between the ends of the pull loar and the ends of the U-shaped bar, members secured to the opposite sides of the scoop and provided with oppositely disposed notches, spring actuated latches normally engaging said notches, rods carried by the said U- shaped bar and connected in operative relation with the latches for releasing purposes, and a lever secured to said 'U-shaped bar and extending rearwardly of the scraper, said lever being provided with means for operaating said latches.

In testimony whereof I affiX my signature.

EBENEZER D. HARRIS, JR.

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