US1437864A - Springboard-supporting device - Google Patents

Description

R. B. RUP AND D. A. AND A. R. HAZELTON.

SPRINGBOARD SUPPGRTING DEVICE. APPLICATION FILED mzczs. |919.

Patented Dec. 5,-1922T'A` INVENTORS f /ascoe 9. Rape ma... .-.7 ATTORNEY Patented Bec. 5, 1932.,

unirse l Vveareni;g orifice.

y ,einen vBOSQUE B. RUPE, OF SEATTLE' AND DONALD HAZELTGN AED ALVAEI VHAIUJLTON,V

1 OF TACOMA, "WELSHINGTON.

,SPBNGBOARD-SUPEORTNG' DEVCE.

Application led December 26, 1919. Serial No. 3475`623g To all fio/wm 'it may concern.'

i he it known thatywe, `ltosoot B.v Burn, a,

TON, citizens oit the TJnited States? residing; at Tacoma, in the county oit Pierce and State lof lvashington? have invented certain new and usetul Improvementsin Spriiigboardtaupporting Devices, ot which rthe following' is a specication.

This invention relates to platforms such n oft its longitudinal axis and at a distance from the outerend of the plate 19 is a. pair ot attachments 2Q, desirably tormed ot angle bars and provided ,in their tlann'es 23 with *holes within which are pivotally engaged the kextremities otbranches 24 provided at the lower end Qta. support-ing* rod 25 whose upper end is ormedwith a hook which as known as-choppinglooards7 upon" which woodsmen stand when choppingor sawing` in telling a tree. 1

The obJect ot the invention is the provision of a strong', durableand el'licicnt de-` vice -for supportingthe board andwhich may be most conveniently vand quickly attached to or disconnected'troin a tree.

A further obj ect is to provide a board supporting structure of this character whichl may be convenient-ly swung; and secured in horizontally adgusted positions by the oper-4 transverse sectional view Lthrough Q-Z of Fig. 1; and Fig. 3 is a plan viewot thel same. f

.ln carrying out our invent-ion, we provide a bracket member comprising an upright bar element 5 connectedtrom itslower end yby a forwardly extending arm 6 with an arcuate portieri 7 termine; with thearm a, shelf ele-v ment and having at its 'extremities'laterally directed branches 8 from the outer ends of which are rearwardly directed tree penetrating points 9. y

The outer faces 10 ot the branches 8 afford shoulders to be struck by a maui or the like in-driving1 the respective points.'` The upper end of the bar element is disposed to at tord a surtacell in a plane to the rear ot the plane of the back surface 12 ot the `part of the bar element therebelow.'

A short distancebelow its otsetupper end,l the bar is provided with a hole having va lower portion j13 sutliciently largeto passy y. the head 11i-,ot ay lag screw/15 therethrough while the upper portion 16 ot such hole has width sutlicient to accommodate the screw shank.

17 `reprt-isents the chopping board proper,

`upon which is secured bybolts 18 plate19l` dispose l longitudinally. At. its inner end saidy plate is formed wlthan upwardly d1- frected pintle `element 2O which extends through an kaperlaire 21 provided in the bracket arm 6 adjacent tothe bar part 5.

Secured to the board. 11T `at opposite sides engages in an apertured lugl" providedon the hracket bar 5. y 4 i The axis et the hookA bill and the axis of the pintle 20 are rin alinement and'servel as hinge connection between the bracketand the chopping board `to atl'ord substantially horizontal swincvingincrements to the latter. The pivotal connection between the branches 2d of the' supportinffrod and the board attachments constitutes a fulcrum for the choppingboard whereby the weight oi its outer end, upon which thek arman or Sawyer stands when working. tends to retain the pintle 2O within bracket aperture 21. Included in the invention are devices for securing the board in adjusted horizontal positions and consists in the provision ot a series ott spaced notches Q8 provided in the underside ot ythe arcuate portion `Y of the bracket cooperating with a pin Q9k secured to plate 19 and having a tapering' upper end 30' arranged to' engage inv any ot the notches. To compensate for the wearing away ot the sharp end 3() ofsaid pim the latter is pro-k vided with screw threads to engage in a,

threaded hole provided in the plate 19` isr firsty iriven at a selected elevation into a tree, indicated by broken lines T in Figs. l and 3,k an'dtheupper end ofthe bracket connected to the lag screw.

The Workman then drives the points 9 into thetree untilthe board l?y ,is substantially horizontal when the bai surface l1 1 is uxtaposed with the tree. rlhe operator thereupon drives or screws the lag screw l5 into the tree until 'the upper portion of the bracket` is firmly held`v to tree.

YThe horizontal position oi the board may be regulated either from the ground or by a person upon the board by first lowering the end ofthe board in proximity 'oit' the tree so as to have the pin 30 below the level oi' the `'underside of the arcuate portion or the bracket and then swinging the board in one direction or the `other about the axes of the gintle Q0 and hook bill This may be f readil f `accorti )lished bv the operator when d c i upon the boa-rd bearing; downwim one of his feet upon the pintle 2O to disconnect the pin 30 from a notch and thereupon `swinging 4the board through Vther agency of his other foot While st'eadying himself Withghis hands against the tree. p Thus being' enabledto regulate the vboard Without 'the necessity of descending,` tothe ground is important as inA the felling of trees of large size it is requisite that lthe 'aller should occupy a number of positions during the progress of his Work,- sawing and chopping thet under cut,7 sawing on one side oli' the tree and sawing and vWedg'ing on the other side.

The device i5 of iight Weight easily handled, strong and capable of rigidly retaining c a plate rigidlT secured to said board and having an upu'aifllj-,f extending' pintle element engaging inthe shelf aperture to provide a pivotal connection between the board and the bracket member, supporting rod Connecting, the bar element with said board at a distance 'from said shelf element, and means disposed intermediate the shell? element and the connection ot' said rod with the board for securing; Vthe board in predetermined horizontal anggular positions relative to the member.

Signed at Seattle, Vashingten, this 9th day of December.` 1.919.

RCSCOE B. UIE, o DONAL A. HAZELTON. ALVAH R. HAZELTON.

Witnesses Pinnen BARNES7V Y` ELIZABETH JOHNSON.

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