USRE2032E - Improvement in horse-rakes - Google Patents

Description

PATENT OFFICE.

ARIEL n. s PnoU'r, o F HUGHESVILLENPENNSYLVANIA.

IMPROVEMENT |N HORSE-RAKES.

Specification formingpurt of Letters Patent No. 45,942, dated J annary 17,1965; Reissue No. 1.032,v dated July 1s, 1865.

`To all whom 'it may concern: y

Be it known that I, ARIEL B. SPRoU'r, of Hughesville, in the county of Lycoming and State ot'Peunsylvania, have invented a new and nsel'ul Improvement in Horse-Rake Teeth, and in the manner of attaching the saine; and l do hereby declare the'following to be a full and exact description of thas-ame, reference heing had lto the accompanying` drawings, making part of this specification, in which-.-

Figure lA is a plan of a. portion of a rake illustrating myinvention. Fig. 2 is a sectional elevation ofthe same, the section being taken in the line cva'. Fig. 3 is a perspective view ot' my improved fastening device by which the tooth is attached to the frame. Fig. 4 is a view of onoef my Acurved teeth.

Similar letters of reference indicate correv sponding parts in the several figures. l

This invention consists, first, in so forming the body of the tooth as to adapt it to wit-hstand a much greater tensional strain; second, in au improved manner ofimparting the net-essaryl elasticity to the spring, and at the same time providing for its more ready attachment; third, in a device which admits otl the attach. meut of the tooth without the employment of screws, nails. or other appliances.

1n order that others skilled in the art to which my invention appertains ma v be en' ahled to fullyr understand and use the same, l will proceed to describe its construction and operation. I

1n the accompanyingdrawings, A A A may represent a series of teeth1 which ol' course are designed to be curved in customary manner, as in Fig. 4. rlhese teeth may be constructed in angular form, as represented, the volume ot' metal ot which they are composed gradually increasing toward the Ainside or in the direction ot' the part to which the tensional force is applied. By constructing the body of the tooth in this manner it is manifest that it is in ade ca pahle of withstanding a much greater strain than teeth containing the same amount ot' metal made round or in any other form hitherto given to the teeth of horsc-rakes, for the reason that bodies begin to break at the weaker points, it being evident that the pcriphery of a round tooth affords a good startiugpoint for a break in the event of a forciand outer periphery.

out'so' as'to foi-in in one pecetbrrewitkratf spring, A', which adapts the tooth to conform aline drawn through the tooth, following its curvature, and equidistant between its inner and outer periphery. This general feature complied with, the conformation or outline of the teeth might vary so lou'g as they fnlll the conditions of my claim, having a greater amount of metal ou the inside of the central line of said teeth, midway between its inner Each tooth A is drawn to the undnlations of the ground, and to rise and pass over any obstacles with which it may come in contact. Besides imparting the requisite elasticity to the tooth, the spring A constitutes means for attaching the same, as will he presently explained.

C C C represent plates ot' metal, formed each with a flange, c, which is let into the frame D of the rake in the manner shown, thus rendering the respective plates capable ofA being tirmlysecured in position by means ofa single screw, c.

If desired, a single mortise may be niade'iu the frame l) for the reception of each flange c; or, if desired, a single continuous groove may be made in the frame, in which the lianges ot' Yall the plates may be inserted.

Formed or cast in one piece with the respective plates G is a standard, C', from and at right angles to which projects what may be termed a. cylindrical spool, (J2, the form of which is more clearly illustrated in llig. 3. In each spool-O2 is formed a recess, c2, and a slot or groove, c3. The spring A', heilig coiled in the manner represented in Fig. 2, is slipped over the spool G2, so as to cause its end to occupy the recess c2, which operation is greatly facilitated by the provision ofthe sltitc3,tl1rough which is passed'the tianged ordetlected end a of the spring A. The end a ofthe spring A', having entered the recess c2, is moved upward therein, by the elasticity of the spring, as far as the limits of the recess will permit, when said spring A and tooth A are securely fastened in position, the'tooth resting on the transverse bar D of the frame and confined by the ordinary staple, D.

Should it be necessary at any time to detach anyone of the rake-teeth, this can be 'done by merely withdrawing the screw c'.

Rake-teeth-of the above construction are simple as well as durable, may be employed with great advantage, and manufactured at little cost.

Iam aware that it has been proposed to make rake-teeth of a tubular character, and, further, by the removal of a portion of the periphery or exterior longitudinally, to make them of a U shape, viewed in transverse section; but I do not claim either of these forms. My rake-tooth is so constructed with sides which are in the main of a trilateral character (unless by the removal of' the angles the sides are merged into a curve) that a longitudinal section following the curve of the tooth and midway between the inner and outer lines of curvature of the tooth will not divide the` tooth into more than two pieces-that is, it will cut through metal at all points from side to sideofthe tooth. This would not be the case were it of U-shaped form, as the-two upper limbs(as the cross-section appearswhen shown thus, U).wou|d be divided from the bow or lower portion and from each other partially orentirely, depending upon whether the U shape became merged into a more solid forni at some other poin t.' It is not mydesign that any curve in the sides ofthe tooth (viewed in cross-section) shall penetrate as far as thecenter of the circle circumscribng the said section; but it is my design that the widest p0rtion of the tooth shall be inside of the'line of 2 n moan section above described,and I intend the term inside to refer to that portion of the tooth which is on the inner side of the cui-ve, viewing the tooth as a whole, in side elevation, as

in its place in the machine of whichit forma` a part.

What I claim as new, and desire to secure by Letters Patent. is-

A1. Independently of the shape of the sides. which are, however, in the main of a trilateral character, viewed in cross-section,) unless by the remova of the angles the sides are merged into a curve, a tooth so constructed that on being divided by alongitudinal section which follows thecurvatnre of thei'ntooth at. a'pointA midway between the inner and outer lines of said curvature the greater amount ot' metal and `the widest portion ot' the tooth shall be on the inner side of said curved section, subthe attachment of the spring A', in the manner set forth.

The above specification ofmy improvement ilu horse-rakes signed this 16th day 'ot"March,` 86 y Witnesses :l

CHARLES D. SMITH, VEDWARD H.v K NIGHn A@ B. sPRoUT.'

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