US100104A - Improvement in horse hay-rakes - Google Patents

Description

A. B. BARNARD.

Horse Hay Rake- No.100,104.- I Patentd Feby 22,1870.

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A. BIBARNARD, OF WORCESTER, MASSACHUSETTS.

Letters Patent N 100,104, dated February 22, 1870.

IMPROVEMENT IN HORSE HAY-RAKES.

The Schedule referred to in theseLetters Patent and making part of the same.

To all whom it may concern:

Be it known that I, A. B. BARNARD, of Worcester, in the county of Worcester, and State of lliassachu setts, have invented certain new and useful Improvements in Horse-Rakes; and I do hereby declare the" Figure 1 is a side elevation of a rake-tooth, spring' and holder as applied to a rake-head, the latter being shown in transverse section;

Figure 2 is a plan of the parts shown in fig. 1.

Figure 3 is a plan of the raketooth holder; and

Figure 4 is a. perspective view of one of the two separate parts which constitute the holder.

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

The invention consists in the arrangement of the rake-tooth anl restoring-spring in relation to a twopart holder secured to the rake-head, as will be hereinai'ter described.

In the drawings A represents a rod or wire-tooth, which has applied to it a spring-B, to restore the tooth to its normal condition after it has yielded totthe extent demnnded in overriding an extraordinary obstruction.

One end of the rake-tooth A is secured to the head C of the rake by a holder to be hereinafter partic ularly described.

The spring B is likewise secured at one end to the rake-head in a manner to be explained, and its free end forms a junction with the rake-tooth ata suitable point between its ends.

The special form in which the spring is represented is merely designed to conduce to its resilient power and ciiicacy, but the shape ofthespring is susceptible of modilication.

The end of the spring which isfastened or held, is not free to give or move in any direction.

It is a flat spring, and capable of opposing considerable resistance to transverse or torsional strain.

I make the last-mentionedproperty oi the spring available in carrying out the very important object of making the spring constitute a brace to hold the tooth against lateral movement or displacement when it meets such surmount-able impediments as have a tendency to deflect the tooth sidewise.

To this end the tooth A passes through an eye at I) in the rear end of thespring l5, hence the tooth has lateral support bctween its ends as aforesaid.

The connection between the rear end of the spring and the tooth might be effected otherwise than by means of theeye b, without departing from the intrinsic principle of my invention; but it is believed the provision of the eye is the most simple and desirable method of attaining the object in view.

In 3 is shown a top view of the holder, the same being the appliance whereby the tooth A and spring B are 'fast-cned to the rake-head.

This holder is cast in two parts, D D, each of which is of the form and constructioushown in fig. 4.

A projection, (I, on the forward end of each part D is iinbedded in the top of the rake-head, and these projections serve, in conjunction with shoulders 11,

abutting against the back of the rake-head, to retain the holder in position agz'tinst any lateral foroeor strain to which it may be subjected.

A groove or channel, d, which may be semicircular in cross-section, is produced in the act of casting each of the parts D.

\Vhen these grooves are set opposite each other in securing the two parts of the holder side by side to the rake-head, they form a bolt-hole to admit the lo't E, or screw, which securely unites the rake-head anl holder.

The said bolt oi screw E also fastens to the holder, the forward end of the spring B, which is braced laterally in consequence of fitting snugly between the two parts of the'holder D.

Any uprising tendency of the spring B at its forward extremity is elfectively counteracted by the shoulders or oii'sets ll, beneath which the sides of the spring B are confined. Said shoulders, independently of the bolt E, serve to hold against vertical movement a straight portion of the spring at or near its attached end, and thus the bolt is relieved of much strain, which would have a tendency to loosen and impair the attachment.

The upward projecting lugs D D of the holder D D, converge toward their tops, so that the spring B, extending backward and upward from the shoulders at", has an additional bearing surface on each lug, as seen at d, fig. 1; thence the spring extends backward under the tooth.

The hooked end (I, of the tooth is shown in dotted lines in fig. 1. It extends more than half waj, round a neck which is formed by two bosses, (l (P, which are cast respectively upon the inner faces of the lugs D ofthc two parts ol'the holder.

Bolt-holes d, cast in the holder, extend through the bosses,- and the bolt F, which occupies the same, holds together the upper ends of the two parts of the-holder,

and at the same time keeps in contact with each other the ('llllb of the bosses d.

The bosses d may taper toward theirinuer ends, or have such other form as will adapt them use. bearing, to conform to the roundness of the tooth.

The modepf casting the two-part holder obviates the drilling of bolt-holes and sundry other difficulties that have hitherto been met with in the manufacture and application of similar devices.

The described method of constructing the spring and combining it with the tooth and holder greatly euhances the utility of the spring, and conduces to the cheapness, compactnessaud durability of the machine.

Having described my invention,

What-I claim as new herein, and desire to secure by Letters Patent, isa The arrangement of the rake-head C, the spring B attached to and passing through the divided toothholder D, and the tooth A, all constructed and operating substantially as described.

Witnesses: A. B. BARNARD.

J. H. ADAMS, THOMAS 0. SMITH.

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