USRE1914E - Improvement in horse-rakes - Google Patents

Description

UNITED STATES OHAs. MASON, ROBERT W. EENWIOK, AND DE WITT o. LAWRENCE, OE WASH- PATENT OFFICE.

INGTON, DISTRICT OF COLUMBIA, ASSIGNEES, BY MESNE ASSIGNMENTS,

OF HARVEY W. SABIN.

IMPROVEMENT IN HORSE-RAKES.

Specification forming part of Letters Patent No. 7,813, dated Decenlber, 1350; extended seven years;

Reissue No. 1,914, dated March 2d, 1865.

DIVISION 3.

and extended for the term of seven years from and after the expiration of the first term-viz., from December 3, 18M-and which patent so extended was, on the 5th day of December, 1864, duly assigned to CHARLES MASON, ROB- ERT W. FENWIOK, and DE WITT- C. LAW- RENCE, of Washington city, in the District of Columbia; and we, the said CHARLES MASON,

ROBERT W. FENWIOK, and DE WITT G. LAW- RENCE, do hereby declare that the following is a full, clear, and exact description of the construction of that part of the invention for applying pressure to rake-teeth, reference being had to the accompanying drawings and lety ters of reference marked thereon, forming a part of this speeication, in which- Figure 1 is a plan view of a rake, showing the improvement herein claimed applied to it. Fig. 2 is a vertical longitudinal section of the same.

Similar letters of reference in the two iigures refer to corresponding parts.

The nature of the invention covered by this patent consists, first, in rake-teeth which are springs in themselves, as will be hereinafter described, in connection with pressure applied, at the will of the operator,'to them at a point in rear of that where they are hung, so. that while pressure is exerted upon the teeth they have a chance to yield or spring between the point of applying the pressure and their gathering extremities, and thus, while the teeth are held down to their work, they singly or collectively may spring up over obstructions and again resume their proper position without injury to themselves, as the great length of their springing capacity-to wit., from the point of pressure to their raking ends-admits of a considerable elevation of their gathering- Y points without danger of breakage from undue strain upon them.

It consists, second, in rake-teeth which are springs in themselves, as will be hereinafter described, and constructed and arranged so as to articulate independently or collectivelyy on their axial support, in combination with press? ure applied to theln, at the will of the operator, at a point which is in rear of their point of articulation.

rlo enable others skilledin the art to make and use this invention, we will proceed to describe, in connection with the drawings, one

particular way in which the same maybe done.

In the accompanying drawings, A is a supporting axle; B B, two transporting-wheels, one of which is made fast upon the axle, so as to rotate with it; C C, shafts or thills; D I), rake-teeth articulating on the axle; E, a tilting frame for elevating the teeth, and F an oscillating frame for pressing-down the teeth.

Both these frames articulate independently ot" each other on the axle A.

J is a hand-lever fastened to a hub of a disk, G, which articulates on the axle A. This lever extends back over the oscillating pressureframe F, and with it the operator may exert the requisite pressure upon the said pressureframe to keep the rake-teeth down to their work. The disk Cr above mentioned has a pin, d, near its circumference, which, when. the hand-lever J is raised by the operator, depresses the tilting frame E, and'causes it to press against the forward ends of all the teeth, and. thereby elevate their raking ends. When the lever is released the parts all assume their Original position on account of the superior weight of the rear portion of the rake.

K is a bar arranged on the rear extensions ofthe thills in rear of the axle, and serving as a support for all the rake-teeth, and also as a clearer to the same as they rise to discharge their gathered load of hay.

The rake-teeth D are made of springy metal from their gathering extremities to their axis of motion, in order that they shall possess a yielding capacity between their articulating points and their gathering extremities, or from the point where the pressure-frame F rests upon them to theirv ends, which touch the ground. In the drawings, Fig. 2, we have shown a raketooth in twocouditions while subjected to the downward pressure of the frame F. The condition shown by black lines is the one it re-v mains in when not obstructed by anything more than the light yielding hay which is being gathered, and the condition shown by red lines is the one it is caused to assume when a more formidable or unyieldin g obstacle comes in its path. From inspection of this figure of the drawings, it will be seen that the teeth have a yielding capacity from their gatheringpoints to the point where the pressure is applied, and therefore they are capable of springing up and back to a sufficient extent for passing over anycommon obstructions in hay-fields without requiring the pressure upon them to he removed.

Itis veryimportant to have pressure applied to each of the rake-teeth in rear of their supporting-axis, in order to keep the whole seriesdown to their work; but -in using such pressnre upon teeth it is either necessary to have the operator constantly on the lookout for obstructions which are liable to break the teeth, so that at the proper moment he may elevate them to clear such obstructionsv or make provision in the teeth themselves for passing over the same. This provision in the teeth themselves in connection with a pressure device, which is applied at the Will of the operator, as above described, is the feature of invention herein claimed, the same being an improvement over the plans heretofore devised, wherein the teeth themselves are not made with a yielding capacity from the point of applying pressure to their gathering ends, or, in other words, where rake-teeth are attached to rigid stocks and springs are applied on top of said stocks and under a pressure-bar, or where the pressure which keeps the teeth down is constantly applied and not under the control of the operator, as is the case when auxiliary springs are connected to the teeth for the purpose of keeping them to their work. The raketeeth have each an independent articulation ou their support by means of eye-bearings, which move with them on their support. By this arrangement any one of the teeth may be allowed to rise independently ofthe others when a stump or other dangerous obstacle comes in its path, the pressure-frame of course being allowed to rise when such rising of a single tooth occurs. When a tooth or two or more teeth thus rise the other teeth may remain down to their work. The advantages of having independent articulation and collective articulation in the teeth While not under pressure, in connection with springing capacity while under pressure, are thus secured. p

Having described one practical mechanical contrivance for carrying out the invention herein -set forth, what we claim as new, and desire to secure by Letters Patent of the United States, isf 1. The application of pressure at the will of the operator to metallic spring rake-teeth which are so constructed as to have a spring action within themselves from their gathering ends to the point (or forward thereof) where the pressure is applied to hold them down to their work, substantially as herein described.

2. The combination of independently-articulating rake-teeth which are springs within themselves and a pressure contrivance which is under the control of the operator, substau tiall y as and for the purposes herein described.

CHAS. MASON. ROBERT W. FENWICK. DE WITT C. LAWRENCE. Witnesses R.. T. CAMPBELL, E. SCHAFER.

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