US1278919A - Wagon-spring. - Google Patents

Description

M. HANsoN. wAGoN SPRING. APPLICATION [ILED 10H26. I9I7 11,?3'7'485519.v f v Pantedsept. 17.1918.

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MAGNUS HANS-0N, 0F PELICAN RAPIDS, MINNESOTA.

WAGON-SPRING.

Speccation of Letters Patent.

PatentedSept. 17, 1918.

Application filed '.Tuly 26, 1917. Serial'No. 182,976.

To all whom t may concern:

-1 Be it known thatil, MAGNUS HANsoN, citizen of the United States of America, residing at Pelican Rapids, in the county of Otter Tail and State of Minnesota, have .invented certain new and useful Improvements in Wagon-Springs, ofwhich the following is 'a specification, reference being had therein to the accompanying drawing.

This invention relates to a wagon spring and has for its principal object the production of an eflicient and novel structure which' is so formed as to-readil yield when either a light iorfa heav-'y'loadfis placed thereon.

Another object ofV this invention is the production of 'a' "wagon spring wherein :the

fiat leaf springs are connected by means-of" pivoted toggles and the levers are also connected by means of coiled springs so as to form a yieldable structure.

With these and other objects in View this invention consists in general of certain novel combinations, constructions and arrangements of parts as will be hereinafter fully described and claimed.

In the accompanying drawing:

Figure 1 is a rear elevation of the wagon spring showing the same in use.

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1.

Fig. 3 is a horizontal section taken on the line 3-3 of Fig. l.

Fig. 4 is a detail perspective view of one of the toggles.

Fig. 5 is a detail perspective view of one end of the flat spring.

Referring to the accompanying drawing by numerals it will be seen that the axle 1 is mounted upon the wheels 2, while this axle 1 supports theblock 3 carried by the tapering beam 4. The wagon bottom 5 is also provided with a depending block 6 and the spring, to be hereinafter described, is mounted in any suitable manner upon the block 3 and supports the block 6, as shown in Fig. 1.

The lower leaf spring 7 is mounted upon the block 3, while the upper leaf spring 8 is secured to the block 6 and these leaf springs 7 and 8 have bifurcated ends 9 adjacent which are formed the sleeves 10.

The levers 11 have comparatively broad bottom portions 12 in which are formed openings 13. These bottoms extend into the bifuroated ends 9 of the springs 7 and 8 so as to cause the openings 13 to register with the openings extending through the sleeves 10,;thereby-permitting pivot'bolts 14 to pass througlithegsleeves 10 and the openings 13 for'rpivotally-.connecting the levers 11 upon the en-ds'fofthe leaf springs 7 and 8. The outer-ends'o'f the levers 11 are also providedxwithfopenin'gs 15 through which the pivot .Abo'lts'f-16 extend for Apivotally connecting-thetouteriends of-the levers together as Vshow-n infFi'g 1. The inner ends of the levers.f 1&1.- are. .provided with openings 17 through `lwhich the .-'hooked ends V1&3 of the coiled- ;springs-i-l'9 extend. These coiled springs *extend in. planes ywhich intersect each other as shown in Fig. 1 so as to cause `-=oiledfsprin`g9`to connect one of the upper 4-levfers to one of the lower levers.

Consequently, the tension of the coiled springs will urge the inner ends of the levers toward each other, thereby causing the levers of each paf; toihave their inner ends spaced under normal conditions. e

-When the device herein disclosed is in use it will be seenthat the tension of the coiled springs 19 will space the inner ends of the levers apart, while the resiliency of the leaf springs 7 and 8 will cause the springs to extend evenly 'in horizontal planes when the wagon body 5 is empty. When, however, the body is carrying a load, it is obvious that the leaf springs 7 and 8 will yield and will disclose the following action: Pressure of the block 6 upon the central portion of the leaf spring 8 will cause the leaf spring to yield at its central portion, and draw downwardly upon its ends. The leaf spring 7, however, being firmly supported at its center by the block 3 will cause its ends to move downwardly. This pressure exerted upon the ends of these leaf springs will cause the pressure exerted upon the levers 11 to be an off-center pressure with respect to the pivot bolts 16. As a consequence, the inner ends of the levers will be swung toward each other, thereby drawing upon the coiled springs 19. It is, of course, obvious that the degree of yielding of the leaf springs 7 and 8 and of the coiled springs 19 will vary according to the weight of the load carried within the wagon body 5. It will be seen, however, that because of the resilient nature of the leaf springs and the tension of the coiled springs,-a structure is provided which will readily yield under allconditions and thus yieldably support the wagon body.

What is clainied is z; 1. In a device of the class described, the

combination of a pail-'of leaf springs; said leaf'springs having bifurcated ends, levers pivotally connected to each other, said levers also being pivot-.ally connected to the bifurcated ends of saidileafi'sp'rings, and springs for normally urging theyinner ends of said levers apart, said leaf springs being adapted to bemounted upona Wagon axilaaindesupw' port a wagon body'-whereby-werrhpmessirre is exerted uponsaid leaf springsisaidgleyers will be swungtoiward .closedpos'ihnnsiis aS to yieldabl support the wagohbodyafe 2. Inia combination of ,a 1 pair ofr .leaf spdingsb'said leaf springs having bifurcate formed upon, the ends"y of lsaid'leaiii spitixrgs; levers comprising elongatedgliis which are broadened at .their centrab levers .projecting within the b ategi lends ,ofv saidfnlea springs, pivotioitqa'paag through sadi ,sleeves `and' aadnievegsiifqn j j L 1 I J es esilio dans .Copies nl.' Vthi.: patentV may be ulitaixixgqfy eviee of. the class 'desebihedgithe ends, said leaf springs being adapted to be l mounted upon the axle of a wagon and support the body thereof whereby when pressure is' exerted upon the coil springs said levers `Will be swung to closed positions against lthe-tension of saidcoiled springs for yieldablg supporting the Wagon body..

In testimony whereof I hereunto affix my signature.

MAGNUs HANsoN.

Mgffnts each, by addressing the Commissioner of Patents

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