US1579702A

US1579702A - Ruler

Info

Publication number: US1579702A
Application number: US637872A
Authority: US
Inventors: Gottschalk Otto
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-05-09
Filing date: 1923-05-09
Publication date: 1926-04-06
Anticipated expiration: 1943-04-06

Description

April 6 A1926.

Fie hay 9, 192s 2 shuts-sheet 1 ,LN mx y N k. R w Q i ---Jv .l NM fil I kl .bn\ Q k ,SNN k 5 \W 4 h,

April 6 ,1926.

O.l GOTTSCHALK RULER F'iledMay 9, 19.25

2 Shegts-Sheet 2 nocntoz 4 Snowy:

' Patented Apr. 6, 1.926.

i OTTO GOTTSCHALK, OFB

" 1,57a7az` 1 UENosr A'Inasjjnaemrma.

' mp'pneation med-mare Tof'aZZ wltomwz't may 'oncem i Be Ait Ilmovvn Dthat BI, '@T'ro l *strument :especially f'de'signed for the IneV f 'or/:elastic ourvevof a be loads.

ment for drawing curves.

fohanical `calcul ation ot4 values such as fstresses and strains, bending moments, point of irl-- flection in complicated structural'designs. V The primary Iobj ect of the linvferitiony is to i'profvide an instr-militent which maybe `used for the determination y'of'-.t\he 'influencey line am, "under certain #Another objectofthe 'invent-ion is'lto provide device of"y this character including a @flexiblemevmberI-andf ai-plu'ralityfo adjustable supports engaging thek vflexible Y member, -Whereby Vthe supports vv.may be adjusted to bend the llexible member in a mannerfto infsubjfeetedto"cervnother object isato `provide aninstru-v A With" the' `foregoing' and other: {ob} eots liii -vieW which will' appear asfthe "description .proceedsgthe invention resides in theeombinationA and arrangement vot' parts and in `the detailS of 'c'ons'tructi'ony hereinafter de# Y `scribed :and claimed, 'it bein'g understood that Changes in i the" precise embodiment f "of "the invention'j'zlierein' 'd1sclosed,`;may lbe lma'de vWithin thescope oi' 'what is claimed,Without fde'parting from Ythe spirit 'of the'i'nvel'ition.

- invention.

"Figure '"1 is' `a ltraiganental"plan viewl of .ra device constructed in accordance with 'the Figure 2 is a ,sectionalV vieu7 taken Aon line Q "2"otF1gure'l. v

"fleXibl-emember in' fonej position-'and disclosying fthe-fline/of deformation. e

Figure fvisfa lplan view disclosing 'the flexible member as movedto a-lpositien y'to illi'istrateano'ther line of deformation.

lFigure 7 is am'odilied ormf. ad f bar and flexible men'iberA engaging :dev-ice.

. Gro-'T'rsoi'aaLK,`

a citizen of Argentina, residing-iat-Buenos justa-ble y Y y Athe same may ,belmovedfto:y set up'ia` bindingv 110 kFigure *18j is another modifiedk form ofthe i1ive"nt-ion.` v

i Figure :#9 fis afurtlier =-the"inventi01i. Y .a -f i"Referring: fto rtlie=fdravvinfgs in"detail-,9the-150 fdevi'cel includes :aL body portion-Grinder sec` tion `5avhieh visrelatively longf and' formed With cu'tlf-oL-itfportionsv in onefsurface thereoif, 1and"disposed-adjacent -to its y sidefedges,v ,.-de- -fningarib'sf'.y e y -A Vlll85' '#lklmiiitediforl movement #longitudinally yof the body portionn are' a plurality-cicatr- KArages 'yeaeliI of @Wh-ich beingfprovided'vvith downwardly Band :inwardly extended'flanges ASithatfy engage thef under surfaces 1 fof the 70 `flanges y6y "to :secure the 'carriagesft'othe body f5.' .As shoivn, fthe upper, surfaces'- of lt'hese ftlanges are formed `with upwardly fand in- `:Wiardfly extended Han-gesy9-that lie in' ispaced rela-tion with the r'upper lsurface oil-the body? 75 portion 5 tog prov'idefguidewaysefor the `Vmovf-'ablebars i110.k u. f

'As shown jby/Fi-gl rtlresebars llOfare zadj'ustablef *with :respect -to they carriages;V and -1.movie ltransversely of Vthevbody'flg'ortion= 55e Se- *80 -fcuringr'serewsi 11 beingrY-providefd and 2de'- fsgnedffto extelidf through portions of @the carriage-to fContactwvith @the 4body ipo'rtion t 'or "rulersection 5 to "secure the-:bars in `=their '.zlpesfiitionsofvfadjuetment, v 95 #Secured -toy veae`li-bar IOfds v.a :rib .llgfdisv posed in'termediateth de: edges, of the 'bar 10;ionefend'eacl line lto illustrate 2ali-ne 'of deformation of a beam. I gf A 1 1 e. Pulleys indicated at141'arelsupportedf-ad- :jacentto'roneedge l ythe-body portion 510i? f fthe-rule tand disposed fon oppositesidesvof 95 the bar =l`0 "associated therewith.' Y VAnpulley "15' yis carried by'. Veach bar `v`l0, the` pulleys` beringf L"designed lto 1accommodate the`==cord f 16 l 'Whicli: fmoves tliereover; the arrangement-pff i 1 the.pulleyshbein'g such as to 'cause the cord 100 lmember 16 "to yexert''a': p'ullizon' the: members yl() Wli'ena l'pull lias'b'een exerted@ on the cord Y '1.16 by meansofthel 'ei'glits' 17F secu1ed;a't-tlie fjendsf:='said'cord. A. 'y I if :Inorderthatrtlie' carriages 7 and y*barsllO5 "lO Wil'lybe ilie'ldiagainstanovement,f after they 'shave .-beenf properly adjusted, setserewsf ,11 -"areiprovided7 which 'have theirinner ends'.

"contacting vwith; the 1 body lp'ortien g5 Where action between the carriages, members 10 and body portion 5.

The ribs 11 are formed with teeth 18 disposed on the upper surfaces thereof, which teeth may be used in connection with gears mounted above the carriages 7, whereby the bars 10 may be adjusted in a horizontal direction.

As shown by Fig. 7 of the drawings, a bar is indicated at 25, which bar is provided with an arm 26 at its outer end, which arm is pivotally connected to the bar 25 at 27.

The outer end of the arm 26 as shown by Fig` 7 extends downwardly and supports the bars 28 that are disposed in spaced relation with each other to grip the flexible member 29 therebetween. ln the form of the invention illustrated in Fig. 8, a pair of bars 30 are pivotally supported at the outer end of the bar 31 as at 32, the bars 30 being designed to grip a flexible member 33 therebetween.

From the foregoing it will be seen that the flexible member when supported by the adjustable means as shown by Figs. 7 and 8 of the drawings, may be held at various angles with respect to the bar supporting the same.

In the form of the invention as shown by Fig. 9 of the drawings, it will be noted that the movable bars 40 may be adjusted at angles with respect to the body portion 41 on which body portion is positioned a carriage 42 which is of a modified form.

The carriage 42 is formed with suitable flanges embracing portions ofthe body portion 41, the bolt 43 that extends through the body portion 41 and bar 40 being designed to secure the bar 40 to the body portion 41.

An elongated opening 44 is provided in the bar 40 to accommodate the bolt 43 and permit of such adjustment of the bar 40 with res ect to the body portion 41.

n the use of the device, reference will be had to F ig. 1 of the drawings, wherein the line indicated at A represents a beam line which is laid out in a suitable scale preferably on millimeter paper. The bars 10 are now adjusted to bring the outer ends of the ribs 11 to positions directly over the line, whereupon the flexible member 13 is passed between the fingers 12 and adjusted to a position directly over the line. To ascertain the elastic curves for the bearing pressure. certain bars 10 are secured against movement with respect to the support while the remaining bars 10 are free to move under the weight of the weights 17 carried at the ends of the flexible members 16. p

Since portions of the flexible cord 16 are positioned over the pulleys 14 and 15 with weights 17 secured thereto, it is obvious that the weights 17 tension flexible cord 16 and the movable members 10 are moved, and

member 13 is bent until the weight 17 Vand the tension of the member y13 are balanced,

thereby defining a curved line to illustrate a line of deformation of a beam.

To further illustrate the use of the device,

let A-B be a straight continuous horizontal beam over supports 1, 2 and 3 loaded in the second span viz, between supports 2 and 3 with a concentrated load P and if' it is desired to know the reaction R2 upon support 2 and R, at support 1, the flexible member 13 is placed over the axis of the beam AB, holding it at the points of support by means or" the slides of the device as indicated by the drawings.

In order to lind R2 we displace the second slide from the left any distance, for example, distance 8 in vertical direction to AB. The flexible member 13 will bend automatically into the elastic curve C. At load P the ordinate of the obtained curve is y, then we have immediately the reaction produced Yby rrnr.

diately RZ: g-,P negative because y is on the opposite side of axis A-B'with relation to the displacement s.

Having thus described the invention, what is claimed as new is 1. 1n a device ot the character described, an elongated body portion, a plurality of carriages movable longitudinally of the body portion, bars movable transversely of. the carriages and supported thereby, ribs formed on the bars and having ends extended beyond the bars, fingers on the extended ends of the ribs, a substantially wide flexible member adapted to be held between the fingers, said bars adapted to be moved to bend the flexible member, and means for securing the bars in their positions of adj ustment.

2. 1n a device of the character described,

an elongated body portion, carriages movable longitudinally of the body portion, members movable transversely of the carriages, a flexible member adaptedV to be gripped by the movable members to bend the iiexible member at various points, means for securing the movable members to the carriages, and means for securing the carriages to the body portion.

3. 1n a device ot the character described, an elongated body portion, carriages movable llongitudinally of the body portion, lata 1,579,702" f f erally movable members mounted on. the

carriages, gripping members on the laterally movable members, a flexible member.V

adapted to be gripped by the gripping meinbers, said movable members adapted to be 'Y adjusted to bend the, flexible member, means A*for securing the movable niembersin their positions of adjustment, and means for securing the carriages to the body portion.

4. ln a device of the character described,

an elongated body portion, a carriage mov- Y able longitudinallyr yof the body portion, movable members mounted.V on the carriages, and: adapted to be adjusted laterally with respectV to the body portion, a flexible member, means for gripping lthe flexible member and transmitting movement of the movable members to bend the flexible meinber,means ,l 5. In a device of thel character described, an elongated body portion, carriages mounted for longitudinal adjustment on the body portion, laterally movable members having pass over the rollers to exert a-pull on the l movable members, andfweights at'V the ends ofthe cord for tensioning the cord.

my own, I have hereto affixed my signature.-

OTTO GOTTSCHALK.

Vfor automatically moving'the laterally mov- ,l able members.

In testimony that I claim the foregoing as f l