US1039076A - Framing-tool. - Google Patents

Description

M. F. ADKINQ.

FRAMING TOOL.

APPLICATION FILED Nov. 9, 1909.

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Speeioation o! Letters Patent.

Patented Sept. 24,1912.

Application led November 9, 1909. Serial No. 527,006.

To all whom it may concern:

Be it known that I, MARIAN F. Anxms, a citizen of the United States residin at Ranger, in the county of Lincoln and tate of West Virginia, have invented certain new and useful Im rovenieiits in Framing-Tools; and I do here iy declare the following to be a full, clear, and exact description yof the invention, suoli as will enable others skilled in the art to which it appertains to make and use the saine.

My invention relates to new and useful improvements in framing tools and especially to the class used for measuring in connection with the pitch and slope of roofs and an object of m device is to provide a tool havin a sca e for determining the angles of tie frame-work used in construet ing a roof.

A further object of m device is to provide'a compact form which may be readil carried in a carpenters chest and a stil further object is to provide a device which may be utilized to determine bevels and angles.

A still further object is to rovide e. device having a previously calcu ated scale so arranged as to be within sight of the operator at all times.

These and other objects will bemore particularly referred to in the following specification and claims.

In the accompanying drawings formin a part of this application, Figure 1 is a gop plan view showing the various working parts of the tool, and Fig. 2 is a transverse section taken on the line 2-2 of Fi .1.

Referring to the drawings in whic similar reference numerals designate correspondin parts throughout the several views, 1 is what ma be termed as the handle of my device consistin of lates 2 and 8 made of any preferre material such as wood, metal, or the like, and secured together along their ed es at a ri ht an le to each other. Along tie outer ace o each of the said plates 2 and 8, respectively, 'are tables of conversion factores and 5, the p urpose of which will be hereinafter more particularly described'l 1..'

, One end oteaehlofthep and 17,; respecarm i 8, while. the. slot -7 isl likewise e adapted to receive a similar arm 9 said arms having f scales marked on one edge thereof. The

1ates2 andv 'is .mining the length o arms 8 and 9 are pivotally secured in each 0f thesaidslots 6 and 7 by means of the thumb screws 10 and 11, said thumb screws not only forming a pivot for each of the arms, but also securin r them firmly in cngagement with lthe pates 2 and 3. The arms 9 and 8 are pivotally secured to brace rods 12 and 18, respectively, the other ends of said brace rods being secured to indicatin slides 14 and 15, respectively. When no -in use, the arms and brace rods nia` be moved into the channels 6 and 7 provided in the plates 2 and 3, respectively. The indicating slides 14 and 15 are secured to the brace rods 12 and 18, reslpectively, by means ofthuinb screws 10 and 7, said slides being adapted to move longitudinally in the channels 18 and 1:9 which extend substantially one-half the length of each of the plate members.

The scale 4, by means of which the lengths of the various rafters are determined, includes both angles of the handle, and extends lfrom one end to about midway the len th of the handle. The scale 5 also inclu es both angles of the handle. This last scale, however, is divided or duplicated, bcingthe" sameupon each an le. The scale 5 is used for determining t e cuts of the' ends of the rafters, as will later be more clearlyunderstood.

It being understood that the width of the building is known and also the desired pitch is the length of common rafters. The proper figure upon this scale multiplied by one-half the width of the building (whateyer the'width of the building may be) will give the len h of the common rafters.

O is the ength of hip or `valley rafters, this scale being indicated by the letters LHV. These fi ures multiplied by half the .width of the bui ding the same as in deterf the common rafters, -will-give'the length ofthe hip or valley Dis a scale for, determining the length of the first jack or cripple rafter, s aced sixteen inches on centers, and is in cated by the letters LFJ. The figures of this scale representing the exact length ofthe first jack rafter for the different rises of roof, tlie rufter to be` spaced sixteen inches on centers. Y

. E is a scale for-.- determining the length of the first jack or`cripple rafter 'spaced two feeton centers and is marked'by theletters LFJ, same as the previous scale and also read 'in -tliesame manner. :,ff'.

tioned,'the different', cuts of all-'rafters-in a roof `runnin,g--*from two inches-rise to the foot-run, to and includin sixteen` inches 1 rise to'the fuot'jrunf'may e readily deter-A mined, as willnowbe described. f

Theplumb cutsfor comm'on' rafters .for the sixteen different pitches of roof may be readily determined -uponthe row of figures marked F by raisin'gtlie arm to correspond with the mark re resentng the pitch of roof desired, as will e clea'rly understood, this' row of figuresibeingfmarked PC, whichl means plumb cut of common rafters.

G is a row of figures for determining-the foot cut of common rafters.` By raisingthe arm "to correspond with the mark v:ving

the pitch desired, the proper cut will e iii-i dicated on the row of fi e of figures is designated y the letters FC.

res G, which 'row H represents the plumb cut for hip or valley rafters. i Byraising'the arin to {cor-` respond with the mark --representing"ft-he` pitch of roof desiredythe'indicatingvslide connected with the arm-willy oint tol'the numbers representing the lum lcutiforthe hip or valley rafters. T erowofffigures' representingr the various -plumb cutsis marked PHV. f I

I represents the foot cut of hip or-valley rafters. By raisin the arm corresponda" to the pitch of roo desired, the foot cut o? hip or valley rafters will be indicated the row of figures marked FHV.

J represents tlierow of figures for'determining the side cut of jac side cut is indicated byraisineither arm of the two to correspond wi lthe mark representing the pitch of roof desired. This row of fi ires is marked SJ, whichl means side cut o jack or crip le rafter..J

rafter, which of the braces 12 and 1 3 point to an'dindicate. the pitch of the lroof, vthe 'positions and l 0 1- serres-eas# warner sagiviagtrpiamb hicirisjthe'pitchfmorer inasmuc 1 g readily adapted to the various requirements of common rafter. Now we have the plumb cut for the. jack rafter. Next we will raise the other arm of the tool to correspond with the-mark 8 representing the .side cut of jack rafter. The tool is then laced on the timber-to be cut, with the p ates 2 and 3 each a ainst a side thereof, the timber marked aong the outeredge of the tirst arm to indicate the plumb cut, and along the outer edge of the second arm to indicate the side cut of By-fmeans ofthe scale, previously'menthe jack rafter. Either arm of the tool inav thenbe raised to correspond with the mark for obtainin the foot cut of the rafter, the

tool reverse and the timber marked along the outer edge of the arm to indicate the foot cut of the `iack rafter, as will be clearly understood. The raising of either arm to determine the various cuts is possible on account of the scale 5 being the saine upon both an les of the tool.

It wi be understood that when the tool is in position on the timber, the latter may be readily marked for the various cuts by drawin a pencil or the like along the outer ed es o the adjusted arms 8 and 9.

n obtaining the various adjustments of the arms, braces and indicating slides, the latter, as will be understood, are moved brackwa'rdly or forwardly along the channels "18ffand v19, respectively, the thumb screws 16 and 17 being'r tightened when the slides are in the Proper positions. The manner o locating the- arms 8 and 9 prmit the tool to be used as a square or a vel. l'It is therefore seen ":hat the possi- 'bilities of the various uses to which this tool ma be put are many in number and, as Ait is a compact devlce and in .constructingfroofs or the like, persons having need for such a device will no doubt` ap reciate its value.

; *rom the above description it will be apreciated that a simple, inex ensive article avii'iga wide range of uti' provi ed.

ity, has been What I claim is: 1'. The herein described device, comprising the combination with a handle com posed-of twoplates secured together along "their edges at a right angle to each other r It will be understoo that the inner edges i and'each havinga slot in one end thereofof a pairof arms pivotally secured in said slotsand adapted to rotate therein, means to Iiixedly secure each of said arms in their adjusted positions, brace rods, one end of each'of said brace rods beine pivotally sccured near the pivotal ends of said arms, the

pivotallyl:v secured to. 'a'n indicating means, s'aidfrplatesjhaving channels tlierein',""said ilneaxis beinge'n agedand adapteiin'isaid channe s anda scale on eating. means.

otherend of each of said"b'race rods being,r

2. In a new article of manufacture, a pair of plates ositioned at right angles to each other, eac of said plates having a slot therein, a air of arms pivotall secured and adapte to rotate one in eac of said slots, means for securing saidarms in fixed relation to4 each of said corresponding plates, a brace rod pivotallv secure to one edge of each of said arms, t e op osite edge thereof being marked with a sca e each of said lates having a channel extending longtu inally from one end'thereof su stantially half the length thereof, indicating slides desi ed to move laterally one in eac of the sai channels, the free end of each of said brace rods being pivotally secured to one of the said slides whereby each of MARIAN F. ADKIN S.

Witnesses:

T. B. HATFIELD, lWM. PLUMLEY.

Copies of this patent may be obtained for dve cents esoh, by sddx'essing the Commissioner of Iatents, Washington, D. 0.

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