US2213300A - Road planer - Google Patents

Description

Sept. 3, 1940.

H. E. BOERMA ROAD PLANER Filed Nov. 21, 1938 ZSheets-Sheet J.

INVENTOR HENRY E.BOERMA BY A TTORNEYS P 1940. H. E. BOERMA 2,213,300

ROAD PLANER v Filed Nov.. 21, 1938 2 Sheets-Sheet 2 INVENTOR HENRY ,E-BOERMA BY A TTORNEYS Patented Sept. 3, 1940 UNITED STATES PATENT OFFICE ROAD PLAN ER Application November 21, 1938, Serial N 0. 241,687

6 Claims.

The invention relates to road scraping or planing machines of that type in which the scraper blade is detachably secured to the frame of the truck or other motor vehicle to extend transversely beneath the same and to be vertically and horizontally adjustable in relation thereto. It is the object of the invention to simplify and improve the construction of the attached mechanism, and to this end the invention consists in various features of construction including:

First, the means for connecting the mechanism to the vehicle frame facilitating the vertical adjustment of the same;

Second, the construction of segments around which the scraper supporting beam is angularly adjusted;

Third, the means for locking the beam to said segments in different positions of angular adjustment;

Fourth, various other specific features as hereinafter set forth.

In the drawings:

Figure 1 is a plan View of a portion of the truck frame showing my improved scraper mechanism attached thereto;

Figure 2 is an enlarged plan view of a portion of the arcuate segment around which the scraper carrying beam is angularly adjustable, together with a locking mechanism for the beam on said segment;

Figure -3 is an enlarged vertical section showving the beam segment and locking mechanism and also the vertically adjustable supporting hanger therefor;

Figure 4 is an enlarged side elevation showing the means for vertically adjusting the beam with respect to the vehicle frame;

Figures 5 and 6 are cross sections respectively on lines 5-5 and 6-6 of Figure 4.

In general construction, my improved road scraper comprises a scraper carrying beam, arcuate segments for carrying said beam and about which it is angularly adjustable, hangers for supporting said segments from the frame of the motor vehicle in vertically adjustable relation thereto, a scraper blade hinged to said beam and fluid operated mechanism for swinging the scraper on said beam and for yieldably pressing the same against the road. The beam A is preferably formed of an inverted channel bar, the upper surface of which is in contact with the arcuate segments B. These segments have attached thereto the hangers C provided with corrugated vertically extending shanks C adjacent to the side sills D of the truck or motor vehicle frame. The shanks ,C are secured to the sills by bearings E preferably clipped thereto by the hook bolts E. One member of each bearing E has a groove portion for receiving the shank C which is held in engagement therewith by a clamping cap E This cap is provided with corrugations interfitting with the corrugations of the shank C so as to firmly hold the latter in each position of vertical adjustment.

ing E through the medium of lugs E and a pivot pin E while the opposite side is clamped to the bearing by a swing bolt E and nut E engaging a slotted bearing on said cap. This arrangement permits of quickly releasing the cap when the shanks C are to be vertically adjusted and quickly reclamping the cap after such adjustment. I have also provided means for facilitating vertical adjustment of the hangers together with the load supported thereby. This is accomplished through the medium of a screw threaded hanger member E located midway between the hangers C and having it lower end connected to the segment B. A second hanger memer member E is attached to a bar E which is connected to and extends between the bearings E. With this construction when the caps are disengaged from the hanger shanks C, the segment C and its load will still be supported by the hanger members E and E raise or lower the segment after which the caps E are again clamped to hold the parts in this position. The hangers C have base flanges C The operator may then rotate the turnbuckle E so as to either The caps E are l also preferably hinged at one side to the bearwhich bear upon the upper face of the segment B and are connected thereto by bolts C preferably engaging slotted bearings in said base flanges. This construction permits of a slight adjustment of the hangers upon the segments whichfacilitates their attachment to the truck frame.

The beam A is connectedto the segments B by members F and hooked clamping bolts F. The latter embrace the opposite side flanges of the beam with the hooks engaging the lower edges of said flanges. The members F are of arcuate form having at their outer edges depending arcuate flanges F for bearing against the beam, while their inner portions F overlap the segments B and are clamped thereto by the bolts F and nuts F The beam is usually adjusted to extend at an oblique angle to the direction of travel of the truck, and it is essential that during operation it should be held rigidly in place. This I accomplish by forming the outer edge of the segments B with a series of notches B and providing the member F with a locking dog G for engagement with one of said notches. The dog G- is pivotally attached to ears G extending upward from the member F, and is also provided with a depending portion G extending through a slot in the member F into engagement with the notch B. A handle G serves to swing the dog out of engagement with the notch when it is desired to angularly adjust the beam in relation to the segment. The construction just described permits of adjusting the beam to extend at any desired angle with respect to the truck frame and to rigidly clamp it in each position of adjustment. This adjustment is further facilitated by providing the segments B with links H pivotally connected to ears H at one end of each segment and of a length to extend to the center of the beam between segments. A pin or stud bolt H pivotally connects the links to the web of the beam, thereby compelling the beam to always remain centered in relation to the segments during any angular adjustment thereabout. The members F are positioned upon the beam by forming apertures in the web thereof, which are engaged by depending pintles F The scraper which is mounted upon the beam may be of any suitable construction and attached to the beam and operated in any suitable manner. As such construction forms no part of the present invention, it is unnecessary to further describe the same, the general arrangement being similar to that shown in the patents to Price No. 1,840,820 issue-d January 12, 1932, and No. 1,865,- 587 issued July 5, 1932.

What I claim as my invention is:

1. In a road planer, the combination with a truck frame and a beam for supporting the scraper mechanism, of an arcuate segment beneath said frame about which said beam is angularly adjusted, a vertically adjustable hanger depending from said frame and supporting said segment, said hanger having a corrugated shank, a bearing on said frame for engaging said shank, and a cap for said shank in said bearing hinged to the latter and provided with corrugations interfitting the corrugations of the shank to hold the same from vertical displacement and means for clamping said cap to said bearing.

2. In a road planer, the combination with a truck frame and a beam for carrying the scraper mechanism, of a segment beneath said frame about which said beam is angularly adjusted, a hanger for supporting said segment, means for clamping said hanger in various positions of vertical adjustment, and a second hanger for supporting and vertically adjusting said segment and its load when said clamping means is released, said second hanger being formed in two sections with an intermediate turnbuckle in threaded engagement therewith.

3. In a road planer, the combination with a truck frame and a beam for carrying the scraper mechanism, of a segment beneath said frame about which said beam is angularly adjusted, a pair of hangers depending from said truck frame and supporting said segment, means for clamping said hangers in different positions of vertical adjustment, and a third hanger intermediate said pair of hangers for supporting and vertically adjusting said segment and its load when said clamping means is released, said third hanger comprising aligned threaded members and an intermediate turnbuckle.

4. In a road planer, the combination with a truck frame and a beam for carrying the scraper mechanism, of a segment beneath said frame about which said beam is angularly adjusted, a pair of hangers depending from said truck frame and supporting said segment, each hanger hav-- ing a corrugated vertically extending shank, clamping bearings for said shanks on said truck frame having an interfitting engagement therewith, and a third hanger intermediate said pair of hangers for supporting and vertically adjusting said segment and its load when said clamping bearings are released, said third hanger comprising a supporting bar extending between and secured to said clamping bearings, a pair of aligned threaded members respectively connected with said segment and supporting bar, and a turnbuckle connecting said aligned members.

5. In a road planer, the combination with a truck frame and a beam for carrying the scraper mechanism, of a segment beneath said frame about which said beam is angularly adjusted, a hanger depending from said truck frame and supporting said segment, said hanger having a corrugated vertically extending shank, and a clamping bearing for said shank having a member secured to said frame, a cap hinged to said mem-, her and provided with corrugations interfitting with the corrugations of said shank, and a swing bolt pivotally attached to said member and engageable with said cap to clamp the latter against said shank.

6. In a road planer, the combination with a truck frame and a beam for carrying the scraper mechanism, of a segment beneath said frame about which said beam is angularly adjusted, a pair of hangers depending from said truck frame and supporting said segment, means for clamping said hangers in different positions of vertical adjustment, and a third hanger intermediate said pair of hangers for supporting and vertically adjusting said segment and its load when said clamping means is released.

HENRY E. BOERMA.

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