US410388A

US410388A - Road-grader

Info

Publication number: US410388A
Authority: US
Publication date: 1889-09-03
Anticipated expiration: 1906-09-03

Description

(No Model.)

M. H. WALWORTH.

ROAD GRADER.

No. 410,388. I Patented Sept. 3, 1889.

WITNESSES:

" ATTORNEYS.

UNITED STATES PATENT OFFICE.

MERRITT H. \VALNVORTH, )F HILLSDALE, MICHIGAN.

ROAD-GRADER.

SPECIFICATION forming part of Letters Patent N 0. 410,388, dated September 3, 1889.

Application filed June 15, 1889- Serial No. 314,362. (No model.)

To aZZ 1071/0722. it 72mg concern:

Be it known that I, MERRITT H. -WAL- WORTH, of Ilillsdale, in the county of Hillsdale and State of Michigan, have invented a new and useful Improvement in Road-Graders, of which the following is a full, clear, and exact description.

My invention relates to an improvement in road-graders of that class in which the scraper is supported beneath a frame mounted upon wheels, and wherein the scraper is capable of vertical and lateral adjustment to throw the earth either to the right or to the left.

The object of the invention is to simplify the construction of the adjustable scraper- V supporting frame and provide a means whereby a single ring may be employed in connection with the said frame of light, durable, and economic construction.

The invention consists in the novel con struction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters and figures of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of my improvement applied to a scraper and supported from a suitable frame. Fig. 2 is a plan view of the improvement detached; and Figs. 3 and 4are sections taken, respectively, on the lines 3 3 and 4 at in Fig. 2, illustrating different ways of supporting the ring in position.

In carrying out the invention I have illustrated the scraper-supporting frame as attached to a vehicle constructed in similar manner to the vehicle described and illustrated in Letters Patent granted to S. F. VVelch, March 13, 1888, No. 379,550, and I have also illustrated in connection with the said frame the same mechanism for laterally and vertically adjusting the frame as set forth in the patent above referred to.

I desire it to be understood that the adj usting mechanism constitutes no portion of the invention, as any mechanism the equivalent of that illustrated may be employed.

My invention consists in providing a single ring 10, having a portion of its inner periphery toothed, as shown at 11, and from the under side of the said ring arms 12 are downwardly curved to an attachment with the transversely-curved scraper-blade 13, as illustrated in Fig. 1. The two bars or members A and A of a bifurcated draw bar or beam 14 are made to extend over the upper surface of the ring, and the forward end of the said draw-bar, which is upwardly curved, as illustrated at 15 in Fig. 1, is provided with an eye 16, whereby the said draw-bar is pivoted to the forward axle of the vehicle or to the tongue thereof, as illustrated at 17 in Fig. 1. To the under face of the said membersA and A of the draw-bar a transverse bar or beam 18 is rigidly secured by means of bolts, as illustrated, or by equivalent fastening devices.

The outer ends of the members of the drawbar are connected by a cross-bar 20,havinga groove or slot produced in its forward end, in which groove or slot the ring 10 is adapted to move. The ring 10 is further supported by means of brackets 21, bolted. to the under side of the draw-bar and the transverse supporting-beam 18, the brackets being secured to the under face of the several beams in such manner that a lip 22 will extend a distance under the ring, and the outer peripheral surface of the ring will contact with the bracket to a greater or less extent, as illustrated in Fig. 3.

Another form of bracket is illustrated in Fig. 4, which is particularly adapted to contact with the inner peripheral surface of the ring to support the same from the inner side. This bracket consists of an angled bar 23, one member whereof is parallel with the supporting-beam, to which it is attached, and through the beam and this parallel member of the bracket a bolt, stud, or pin 24 is projected, carrying a friction-roller 25, adapted for 0011- tact with the inner peripheral surface of the ring. The horizontal member of the bracket is sufficiently long to extend a distance beneath the ring to support the same as it is revolved. The friction-rollers assist in a measure in the revolution of the ring.

I desire it to be understood that either form of bracket may be employed, or both forms may be used at the same time, if desired, in which latter event one of the brackets shown in Fig. 3 and one of the form illustrated in Fig. 4 are attached to the draw-bar in such manner that one bracket will contact with the outer peripheral surface of the ring and the other with the inner peripheral surface of the same. The ring is revolved to throw the scraper 13 in different diagonal positions beneath the vehicle by a pinion 26, meshing with the inner toothed surface of the ring, which pinion is secured to a shaft 27, journaled in suitable bearings and carried upward preferably beyond the top of the body of the vehicle, and provided at its upper end with an attached hand-wheel 28, whereby the pinion is readily and conveniently rotated.

It will be observed that but a single ring is employed to support and carry the scraper, and that the said ring is supported by a series of short brackets arranged at intervals, thus providing a simple and light, yet economical and strong, bearing or guideway for the ring.

If in practice it is found desirable, two or more cross or supporting bars may be attached to the draw-bar. Ordinarily, however, one is sufficient.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A support for the scrapers of road-graders, consisting of a bifurcated draw-bar, one or more supporting-beams attached to the members of the draw-bar, brackets secured to the under surfaceof each of the said beams, and a ring supported by the said brackets, substantially as shown and described.

2. In a support for the scrapers of roadgraders, the combination, with a bifurcated draw-bar, one or more beams projected from the members of the said draw-bar, and brackets attached to the under side of each beam, of a ring support-ed by the said brackets and held to turn thereon, substantially as shown and described.

3. In a support for the scrapers of roadgraders, the combination, with a bifurcated draw-bar, a beam or beams extending from the members of the said draw-bar, and brackets attached to the under face of each beam, of a ring provided with an inner toothed peripheral surface supported by the said brackets and held to turn thereon, curved arms projected from the under face of the ring, and a scraper-blade attached to the said arms, and means, substantially as shown and described, for turning the ring in its bearings, as and for the purpose specified.

MERRITT H, WALWORTH. Witnesses:

M. MCINTYRE, M. L..RUssELL.