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Publication numberUSRE11450 E
Publication typeGrant
Publication dateOct 23, 1894
Filing dateApr 11, 1894
Publication numberUS RE11450 E, US RE11450E, US-E-RE11450, USRE11450 E, USRE11450E
InventorsErnst F. Steck
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Calculating-rule
US RE11450 E
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

R1". s111011.r

GALGULATING RULE.'

, .1&9 I .mm

@ :RM1 am r ggg/ STATES UNITED PATENT OFFICE,

ERNST ESTECK, OF CHCAGOLILLINOIS.

yCALCU LATl NG-RU LE.

`SPEGIFIGA'LLION' forming part of Reissued Letters Patent No= 11,450, dated October 23, 1894:.

Original No. 515,97 8, dated March 6, 1894. Application for reissue led April-11, 1894. VSerial No. EOF/|182.

To @ZZ whom t may concern:

Be it known that I, ERNST F. STECK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful 1inprovements in Calculating'- Scales, of which the following-is a full, clear, and exactspecification. y

My vinvention relates to scales vor devices for calculating the superdcial area of rectangular surfaces, when two of the dimensions or the length andbreadth are known; audit is more especially designed for use as a lumbermans rule, for ascertaining the square' measure of boards.

The object of my invention is to provide a scale oi this character, which shall be of a more convenient and handy form, and to greatly reduce the dimensions of the scale, Without, however, reducing its measuring capacit-y.

\Vith these ends in view, my invention consists in certain features of novelty, by which the said objects and certain other objects hereinafter' described are accomplished, as full-y explained with reference to the accompanying drawings and more particularly pointed out in the claims.

ln the said drawings, Figure l, is a face View ofny improved scale, a portion at a .point between the ends thereof being broken away. ',ifig. 2, is a transverse section thereof, taken 'th rough the slide on theline 2--2, Fig, l. Fig. Z3, is a longitudinal section,talren on the line 3-3, Fig. l. Fig. 4, is a vieuT side of the scale embodying a modification of my invention. Fig. 5, is a longitudinal section of the same, taken on the line 55, Fin'. 1., and Fig. 6, isa transverse section of the same taken through the slide, on the line GMO, Figs. 4 and 5.

ln the drawings, wherein the same signs of reference indicate the same or like parts throughout.- tlie several views, Ais a plate or strip, composed of any suitable material, such as bone, Wood, metal, or composition, but preferably metal, which is divided iongitudinally into a number of scales corresponding 'to the number of different widths of bf or surfaces that it might be desired to measure. 'The first o these scales, B,

as shown in Fig. 3 is provided with..

of the under graduations numbered from 1 to 36, indicates .the width of the surface to be measured, and the succeeding scales, C, D, E,F, G, H, which, with a Width scale divided into thirty-six parts, as here shown, should be divided respectively into graduations numbered from l to 42, l to 4 8, l to 54, 1 to 60, l to G6, and 1 to 72. Arranged upon this plate A, and extending across the face thereof, is a slide I, provided Awith any suitable operating knob or button, J, and-having on both sides in line with the graduated scales, B, C, D, dac., aseries of numbers, which indicate the lengths of theboards to be measured. These numbers on the slide, indicate the length in feet, while the numbers on the scale B, indicate the Width in inches; and it will be seen that the spaces on the slide opposite the scales, B,

C, D, ttc., respectively, are numbered from l2 to 24, the numbers increasing successively by two, which conforms to the usual mannerof measuring lumber, as the odd feet are not counted.

scale will be readilynnderstood. The number found upon the plate A, at the point'of conjunction of the figures indicating the width and length ofthe board or surface, is the number ot square feet in that surface: lfor example: if a board be seventeen inches Wide and eighteen feet long, to ascertain the square feet in said board, itils only necessary to move the y slide until the edge thereof registers with the number 17 on the scale l5, which always indioates the Width, and then following down the column of figures on the slide to the number which indicates the length, i8, it will be found that the point of conjunction bet-veen the number 1S on the slide and the'graduations `on the rule is at 259,-, which means twenty-dv@ and one-half feet, the number of square feet A in'the board of the dimensions specified. .l

Y Y From the foregoing, 'the manner of using the The scale shown in Fig. l, is capable of measng 5 uringa board thirty-six inches Wide and twenty-our feet long, but it is very obvious that the capacity of the scale may be increased as desired, by arranging the top line ot figures closer together,so as to have graduations of the same value in. a smaller scale, but at a shorter distance apart, and rearranging the succeedsy ing rows of numbers C, 13,51, die., aceordingiy. In the prior construction essere referred (to,

IOO

-' `ze width and length, may,

V the purpose of registering with numbers on 2 1 j 11,45'ov" the scale, o'r line of numbers corresponding* intoinches, that is,vr

to the scale'B, is divided into spaces cachan inch long, but in my device, the spacesor graduations are of arbi.l

5 trary length and n eed only be suliiciently far apart or of sufficient length te aord room for placing :the numbers lindicating their values thereon. Hence, it is very evident thata scale for measuring surfaces of Agreat according to my invention, be constructed on a comparatively short strip-or plate, or upon a strip or plate not too long tobe conveniently carried about 'by-the user. r

The additional scale, K, on the slide I, is for the scales B, C, D, dac., at the extreme limit l orright-hand end of the plate, where the numeo the latter hasreachedV the limit ment in 'that-direction.

' The plate A, on its under side,

, provided at. each edge with a rabbeted porc -tion a, in which tit in-turned flanges c', formed of its movegon the side-pieces j', of the slide I, thus hold- 'ing the slide securelyl in place; with capa .bility of being readily slipped along the plate from end to end. At each end of the plate A,

preferably on the under side thereof, -is se- 3o, cured-by means of screws, 0, or otherwise, a

' blockl P, vwhich 'limits the `slide'Iand prevents the same from being slipped entirely oiat either end of the plate,

and at the same' time subserves the further 3 5 useful purpose of feet or supports, which, elevating the plate from the table or othersur-v l face uponwhich it mightbe resting when in pper'ation,

slide. Y

4e@ Inftheforin shown iu Fig. V1, the deviceisadapted for measuring surfacesfrom twelve :to twenty-four yfeet in length, but should it be (desired to increaseor. double the capacity of `the rule, as thus constructed,`the plate A and l the s lideI, may be divided into a greater nurnb'er of longitudinalscales B, C, D, (be. This,

' however, would necessarily increase the di- `mensions ofthe apparatus to a vgreater or less extent and therefore, it is preferable ltoac- 5e complish this result by providing the plate A with the graduated scales B, 0,1), rbc., on Vbot-h sides alike, as shown in Figs. 4 and'5; and inl this .event, the slide I would be prof vided on the under side, with a cross piece Q,

vvr chis also. provided at each'side with a sca e or series of numbers indicating the lengths of the boards to be measured. The -numbers on these scale's, however, should bc-` gin where the numbers of the scales onthe 6o upper. side of thel slide leave 0E; that-is to say, if the highest'number on the face o'f the #of `the scale on therunder out the extent or lengthof the sc're, as be fore described, thus doubling the capacity bers`would becovered under nthe slide when is preferably movement of the permitsfthe llfree'movement ot theV 4of the scale without increasing its dimensions. When the doublescale is used, however, the rabbeted portions a, in the plate A, employed and the slide formed into an integral rectangular loop or strap, as more clearly shown in Fig. 6, which completely surrounds theplate A. In each instance, the edges of the slide I, upon which the lengthscales are-formed, may, vif desired, be beveled or inclined downwardly, so as to bring their divisonlines R, .close to the longitudinal B, C, D, &c whereby it may be more accu'- `rately and readily determined which lines are coincident.l

In the drawings, I have represented the or cavities, S, which more readily define the divisions or graduations to which the numbers on the scales B, C, D, &c., refer; but it is quite obvious that any other mark or a heavy line at such places might also be used, or, indeed, no marks or lines at all,other than the mere graduation lines, need beused, without departing from the spirit of my invention. Itis also quite obvious, so far as the mechanical construction of my invention is concerned, thatthe :numbers on the various scales may be considered as representing yards, feet, miles orv any desired units of scales might be..employed tocalculate any other amounts, solong as the mechanical con-y struction of my invention is employed.

Having thus described my invention, what I claim asA new therein, and desire to secure byLetters Patent, is-

\ l. The combination of a plateor strip havda series of scales, and on the other side similar scales forming'a continuation of said first scales, and a double slide arranged on said plate or strip and having on one side ascale extending transversely of said plate or strip and bearing .signs or characters, adapted to register respectively with the scales'on said plate or strip, and a similar scale on the other side of said slide forming a continuation of the first said scale on said slide, substantially as set forth.

2.v In a lumbermans rule, the combination of a plate having marked thereona series of longitudinal graduated scales bearing numbers indicating width and the square meas., ure of rectangular surfaces, each of said scales beginning with the same number, but each successive scale containing more numbers than the preceding one, and a.y slide arranged on said plate and having at its edge a-scale extending transversely of the aforesaidscales and bearing numbers indicating length and 'increasing successively by two and adapted Vto' registerrespectively with the numbers of the scales` indicating width, substantially as set forth.`

having a series of longitudinally arranged' division lines of the scales r measure.; or the numbers and' graduated plate A as provided with slight indentations IOC I15 c ing formed longitudinally thereon on one side,

IIO

3. In a lumbermans rule, a plate or strip arrangedthereon Y*and having-'a transverse indicate chel square measure, beihg soar-= .y ranged a yno be substantially in une wich-the 1 Aindicating edgeof isphced-a the character indicating the Width v1 5 f vthe surfacet be measured, su,bstamsially las, Setforth. v. 1 f

scales, in combination with a Vmovableslide scale bearing ch.aract-,ersv4 indicating vlength and registering respectively with the/scales of said series, one of said longitudinal scales" having signs indicating-Width and-the'oth-ers;

-havingynumbjcrs equai respectively cothe c v v y r` k.ERST Fy square measures of surfaces whose Iengths and breadths Ycorrespcnd respectively with'` f Witnesses: i e the characters in the saidleiigth and'breadtii- Y R. ceomonuimao, i?. a H0131,

said slide'wh'en suchedge

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5230158 *Jan 21, 1993Jul 27, 1993Wall Edward MMeasuring tape
US5251382 *Mar 23, 1992Oct 12, 1993Baklund-Hellar, Inc.Tape measure for determining the centerpoint of a distance
USRE37212Dec 17, 1999Jun 12, 2001Forrest A. MarshallTape measure