US1761605A - Road-scraper attachment for trucks - Google Patents

Description

June 3, 1930. E. A. WEEKS ROAD SCRAPER ATTACHMENT FOR TRUCKS 2 Sheets-Sheet 1 Filed Nov. 28, 1928 INVENTOR 6/7266? fl. Mani d 'ATTORNEYS June 3, 1930. E. A. WEEKS 1,761,605

ROAD SCRAPER ATTACHMENT FOR TRUCKS Filed Nov. 28, 1928 2 Sheets-Sheet .2

' Patented June 3, 1930 UNITED STATES PATENT OFFICE ERNEST A. WEEKS, F KALAMAZOO, MICHIGAN, ASSIGNOR T0 ROOT SPRING SCRAPER COMPANY OF KALAMAZOO, MICHIGAN ROAD-SCRAPER ATTACHMENT FOR TRUCKS Application filed November 28, 1928. Serial No. 322,553.

This invention relates to improvements in a road scraper attachment for trucks.

The objects of the invention are: First, to provide such a structure which is readily attached and adjustable for height.

Second, to provide an improved pivoting means with attaching clamps.

Third. to provide improved means of centering the attachment.

Further objects and objects pertaining to details and economies of construction and operation will definitely appear from the detailed description to follow. The invention is defined in the claims.

A preferred embodiment of my invention is illustrated in the accompanying drawing, in which:

Fig. l is a side perspective view of part of a truck chassis with my improved scraper attachment in place, portions being indicated by dotted lines. a

Fig. 2 is a plan view of the parts of the chassis and attachment appearing in Fig. 1

showing the curved attachment segments at each side of the chassis, a portion of the cab being broken away to show details.

Fig. 3 is a detail perspective view showing the suspension brackets and'the curved side section in separated relation, one of the side beams only being shown.

Fig. 4 is an enlarged detail elevation view of the forward hanger appearing in Fig. 1 and the attaching end plate of the segment showing details and showing the adjusting means.

Fig. 5 is a detail elevation view from the left hand side of Fig. 4, the adjusting brackets and certain details being indicated by dotted lines.

Fig. 6 is an enlarged detail of the adjustable clamp means for the hanger board partly in section on line 66 of Figs. 2 and 7.

Fig. 7 is an enlarged detail sectional view on line 77 of Figs. 2 and 6, showing the clamping bolts.

The parts will be identified by their numerals of reference which are the same in all the views.

1,1 are the side beams of a truck frame or chassis. 2 is the cross team. 8 the cab and 4, 4 are hangers on which are adjustably'suspended the curved angle bar supporting segments 5, 5. j

6 is a detachable supporting beam or hanger board for the scraper, 7 is the scraper and 8 is the scraper rockshaft. 9 is the hydraulic cylinder for actuating the scraper. 10 and 11 are clamps for clamping the hanger board 6 to the supporting segment 5.

12 is the cable radius connection for maintaining the beam substantially central while it is being adjusted on the segments or reversed.

The hangers 4 are each secured by clamp bolts 41 and cross piece 42 to the side rail 1,,by bolts 41 through one limb of the angle iron constituting the hanger. The hangers each contain slotted holes 43 to facilitate the adjustment and are provided with angle ad justing brackets 44 secured thereto by bolts 45 and containing vertical bolt holes 46 for the adjusting bolts 47.

The supporting segments 5 are angle structural steel bent in the arc of a circle with the horizontal rim outward. These are provided with attaching plates 51 at each end which are perforated at 52 for attachment by the attaching bolts 53 to the hanger 4. An angle bracket 55 is secured to each end plate 51 and has vertical bolt hole 56 to receive the adjusting bolt 47 by which means the adjustment and exact level of the supporting segment is secured, no matter what the angle of the side beam of the chassis may be. These side beams are usually on an incline, being lowest at the front.

The detachable supporting beam 6 is secured by'its opposite ends to the segment 5 by main clamp 10 which has a hook 101 which engages outwardly over the vertical limb of the segment 5. It is securely clamped by bolt 102 having its nut 103 at the top. Clamp bolt 102 is disposed in a slotted hole 61 in the beam 6. A toe clamp 11 is secured in place by a pair of bolts 111 through holes 62 in the beam 6. These bolts are yolked together by bar 112which engages the nuts 113 on the lower ends of the bolts, the bolts being provided with square heads 114 for adjustment and attachmenti The beam 6 is maintained centrally during adjustment by the radius cable or connection 12 which is secured by suitable eyes 121 to the forward ends of the supporting segment 5. It passes through loop 122 secured by bolt 123 at substantially the center of the beam 6.

It will be seen that the beam can thus be very readily adjusted, it being maintained at the center by this connection. The cable 12 plays slightly through the eye 122 to permit movement and avoid binding. Bars may be used in place of the cable.

I will not describe in detail the hydraulic means for actuating the scraper because that is made the subject matter of a concurrent application.

My improvements pertain to the matters of adjustment, the matter of maintaining the adjustable beam central in its relation during adjustment or reversal and the formation of the parts in such a way that they will have the required strength for the heavy work of a scraper. I am aware that the curved segment broadly as appears in this drawing are old and I do not wish to be understood as claiming the same. I wish to claim the structure specifically as pointed out in the appended claims.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a scraper attachment for a truck chassis, the combination of detachable hangers. having slotted holes therein, brackets on said. hangers with adjusting bolts therethrough for adjusting the elevation of the scraper attachment, curved angle bar segments having end plates for attachment to the said hangers, brackets on said attaching plates disposed for cooperating with said adjusting bolts through the brackets on the hangers, a scraper comprising a supporting beam with a scraper pivotally connected thereto, hook clamps within the segments for attachment of the beam to the angle bar segments, toe clamps at the outside for clamping the outside thereof, and an equalizing radius cable connected to the forward ends of the said segments with loop connection centrally of said beam, coacting as specified.

2. In a scraper attachment for a truck chassis, the combination of detachable hangers having slotted, holes therein, brackets on said hangers with adjusting bolts therethrough for adjusting the elevation of the scraper attachment, curved angle bar segments having end plates for attachment to the. said hangers, brackets on said attaching plates disposed for cooperating with said adjusting bolts through the brackets on the hangers, a scraper comprising a supporting beam with a scraper pivotally connected thereto, hook clamps within the segments for attachment of the beam tothe angle bar segments, and toe clamps at the outside for clamping the outside thereof, coacting as specified.

3. In a scraper attachment for a truck chassis, the combination of detachable hangers, curved angle bar segments having end plates for attachment to the said hangers, a supporting beam with a scraper pivotally connected thereto, hook clamps within the segments for attaolnnent of the beam to the angle bar segments, and toe clanips at the outside for clamping the outside thereof, coacting as specified.

4. In a scraper attachment for a truck chassis, the combination of detachable hangers having slotted holes therein, brackets on said hangers with adjusting bolts therethrough for adjusting the elevation of the scraper attachment, curved angle bar segments having end plates for attachment to the said hangers, brackets on said attaching plates disposed for cooperating with said adjusting bolts through the brackets on the hangers, and a scraper comprising a supporting beam with a scraper pivotally connected thereto carried by said segments, coacting as specified.

5. In a scraper attachment for a truck chassis, the combination of suitable hangers, curved segments at each side of the body, a hanger beam with adjusting clamps for securing to the said segments, and a radius cable connected to the forward ends of the said segments and by a suitable eye to the center part of the hanger beam, as specified.

6. In a scraper attachment for a truck chassis, the combination of curved segments at each side of the chassis, a hanger beam with scraper carried by the said segments and adjustable thereon, and a radial connection from the said segments to the center of said hanger beam to guide the same when adjusting the angle thereof to the said chassis, as specified.

In witness whereof I have hereunto set my hand.

ERNEST A. IVEEKS.

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