USRE1915E - Improvement in horse-rakes - Google Patents

Description

` UNITED STATES lPATENT OFFICE.

CEAS. MASON, ROBERT W. FENWICK, AND DE WITT C. LAWRENCE, OF WASH- INGTON, DISTRICT OF COLUMBIA, ASSIGNEES, BY MESN E ASSIGNMENTS,

OF HARVEY W. SABIN.

IMPROVEM ENT IN- HORSE-RAKES.

Specification forming part of Letters Patent No. 7,813, dated December 3, 1850; extended seven years; f

Reissue No. 1,915, dated March 28, 1865.

DIVISION No. 4.

To all whom it may concern:

Be it known that HARVEY W. SABIN, late of Canandaigua, in the county of Ontario and State of New York, now deceased, was the originator of certain new and usefulinventions and Improvements in Horse-Rakes, for which Letters Patent of the United States were granted him for the term ot' fourteen years from the 3d day of December, 1850, and that the said patent was duly renewed and extended for the term of seven years from and after the expiration of the first term-viz.,from December 3d, 1864-and which patent so extended was, on the 5th day of December, 1864, duly assigned to CHARLES MASON, ROBERT W. FEN- WIOK, and DE WITT U. LAWRENCE, ot' Washington city, in the District of Columbia; and we, the said CHARLES MASON, ROBERT W. FENWIOK, and DE WITT C. LAWRENOE, do hereby declare that the following isafull, clear, and exact description of the construction of that part of the invention which we designate a tubular-joint rake-tooth, reference being had to the accompanying drawings and yletters of reference marked thereon, forming part of this specification, in which- Figure 1 is a perspective view of araketooth with a tubular eye-bearing applied to it. Fig. 2 is a plan view, showing a portion of the axial shaft of the rake-teeth, and also several tubular-joint teeth arranged to articulate upon this shaft. One of the tubular joints or eye-bearings is shown in section, and a portion of one of the teeth is broken out at said joint. Fig. 3 is a vertical longitudinal section of a portion ot' a wheeled rake with tubular-joint yraketeeth arranged upon the carriage-axle.

Similar letters of reference in the several figures indicate corresponding parts.

The nature of the invention covered by this patent consists in arranging springy metal rake-teeth on their articulating and laterally bracing and supporting eye-bearings in such manner that the'attaching end ot' the teeth shall cross or intersect a vertical plane passin g longitudinally through the axis of the bearings. /v

To enable others to make and use this invention, we will proceed'to describe the same with reference to the drawings.

It is important to have rake-teeth light and springy, and at the same time firm against'lateral movement and strain when in the act of raking or' gathering hay; also, to have such teeth set or. spaced apart on their supportingshaft in order that the rake shall be light. lt

is further important to have the teeth capablev of collective and independent articulation, in order that the teeth may singly or collectively rise to pass over unyelding obstructions, and

that the gathered hay may be discharged; and

it is further very important that the teeth may be attached to the tubular bearings in such a -manner as to be capable of yielding from the points of their attachment to their gathering extremities, and at the same time be supported by a rod or axial shaft situated directly under the points where they attach to the eye-bearings.

In order, therefore, to produce a spring-rake combining the several important advantages above enumerated,thebearing Bof each tooth A is m ade of a separate piece ot' metal from that of which the tooth is made; hence the tooth may be made of narrow spring metal, while its bearing to which it is to be axed may -be made of any desired metal, and of a length l sufficient to give the tooth the. necessary lateral support and bearing upon the axial shaft.

The tooth is fixed in a secure manner` to the bearing at the highest point thereof, or in a plane which intersects a vertical plane passing longitudinally through the axes of said bearing., and thus the necessity of inserting the end of the tooth into a horizontal tube of the eye-bearing, and thereby making a portion of the tooth stili' or rigid, and consequently liable to break under pressure, is obviated. Besides this,the tooth is sustained against the downward pressure which is brought upon it at a point between its gathering extremity and its attaching end. To make the invention more plain,we will state that through its agency the attaching portion of the tooth can be made with a sprin gy nature, and thus the whole tooth, from the point of its attachment to the tubular 01' ings, and their axial shaft be-secured, but such a one as will sustain the teeth against all ordinary lateral thrusts and downward force of the pressure-bar, which is generally used to keep them to their work of gathering hay.

We have set forth the importance of maky'ing the raking contrivance of a hay-rake as light as possible; but as this must not be done at the expense ot' strength it is a matter of no little importance to secure in the same implement both strength and lightness without increasing the cost of the same. These essentials are attained by using the laterally-bracing eye-bearings and fastening the teeth to them in such lnanner that their attaching ends will cross or intersect the vertical plane of said bearings, 0r so that the weightof the forward parts of the teeth will fall directly over or on the bar upon which the bearings are placed, and upon which they articulate, and thus any pressure which may be applied between the attaching and raking ends of the teeth will lie-borne by said rod in slich manner that the breaking ot' the'teeth will seldom, if ever, occur.

The rake-teeth are represented as having their support upon the carriage-axle C of the rake in'snch manner that each tooth may articulate freely thereon.

For raising the rake-teeth collectively, a tilting frame may be arranged to articulate upon the axial shaft of the teeth, so as to operate with a downward pressure at the will of the operator upon the forward extensions of the teeth and for keeping the teeth down to their work` a. pressurefframe. may be arranged to articulate upon'k the axle and press down upon the teeth in rear of the axle. The said tilting frame and the pressure-,frame may be controlled by a hand-lever and a tripping device which articulate together upon Vthe axle.

The arrangement ot' the tilting frame, pressure-frame, lever, and other contrivances are claimed under Division No. 2 of this reissue, to which reference is made for a more particularl description thereof ;4 but these devices constitute no part of the invention claimed under this patent. I i

Whenever it is desired to have the teeth placed-orspaced a greater distance apart than the length of the eye-bearin gs will permit, rings D may be introduced between the abutting endsof the bearings, as indicated in the drawings.

The series of tubular or eye bearings for a series of spaced rake-teethare held together against longitudinal displacement on their axial sha-ft by mea-ns of stops, which in this case are the hubs of the wheels of the rakecarriage. i

In Fig.'2 the manner in which the teeth are arranged upon the axial shaft is clearlyshown, and in Fig. 3 the position of the teeth while raking is vrepresented by black lilies, and their position while discharging their load of gathered hay is shown by red lilies.

What we claim, and desire to secure by Letters Patent of the United States, is-

Arranging rake-teeth on articulating tubular laterally-bracing andvertically-supporting eye-beari'n gs, so that the attaching end of each tooth shall cross or intersect a vertical plane passing longitudinally through the axis of the bearings, substantially as described.

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

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