US1511668A - glanzer - Google Patents

Description

@C11 14 1921. .l f L. E. GLANZER PANTOMETER lAPPARATUS Filed May 5,

FIQN

Arm/sv Patented lll,

LEON BENEDICTO GLANZER, OF BUENOS AIRES, ARGENTINA.

EANTOMETEB. APPARATUS.

Application led May 3, i920. Serial No. 378,354.

To all who/mit may ooi/cem:

Be it known that l', Leon' BnNnniUro Ghanaian, a citizen of the Argentine Republic, residing at Calle Maipu 671, Bue-nos Aires,

Argentine Republic, have invented new and useful improvements in a Pantometer Apparatus, of which the following is a specification.

rllhis invention relates to ai pantometer apparatus for determining the proportions'oi' objects seen from a distance and tor facilitating their graphic design, to any scale which may be desired.

its will hereinafter be seen, the pantometer substantially consists ot two plates,

ot any suitable material, one of which, suitably guided, is arranged to slide on the other.

ln the lower plate is formed, either by drafting or fretting,` a perfect square, at

the edges of which and on both faces of the plate are provided scales, related one to the other and based on fractions ot prime numbers. The upper or sliding plate is provided with several geometric designs, either formed by drafting or by fretting, also provided with suitably combined scales. i

By means ot this apparatus, any desired or possible proportions in any rectangle and #l0 the degree of angle or direction of any obliques may be determined.

For the better understanding of this description, illustrated detailed drawings have been annexed thereto, wherein Figure l shows a plan view of a pantometer constructed in accordance with my invention.

Figures 2 and 3 illustrate a plan view of the obverse and reverse, respectively, of the lower plate.

Figures t and 5 are similar views of the obverse and reverse ot the upper or sliding plate.

In said views, A indicates the lower plate and B the upper or sliding plate.

The plate A is provided on the obverse, confined by one ot the sides of the central square, with the scales w and b, the former of which is divided into 4 equal parts which in turn are subdivided in l/2, 1/4 and 1/8. The scale b within the same total dimensions of the former, is divided into three eoual parts and each of these latter is subdivided into l, 1/4 and l@ 0n the reverse of the same plate are seen the scales a" and b, the first of which being divided, in combination with the former scales, into live equal parts, each ofwhich has been subdivided into M2, M, and 1/8, while the second part or scale b is divided into one hundred equal parts or tractions, and each of these latter is subdivided into two fractions.

The plateB is provided, on the obverse, with a square E, adapted to be used for the reproduction of small objects situated at a great distance, both sides of the square being provided with scales combined in the same manner as a, a" and b, b.

F indicates a quadrant, formed with subdivisions so as to constitute five equal frac* tions. i

`Gr is a consecutive quadrant of F, subdivided into three equal fractions and indicating a point S which with S. C. L. indicates one seventh of the development of the circumference Reverse, F andG. Scaled graphometer.

H, quadrant.

The material employed in the construction of the pantometer may suitably be aluminium, Celluloid, papier mache or other con venient materia The operation oi the pantometer is as tol lows: For measuring an object situated at a distance, the pantoineter is interposed be tween the object and the eye, and by more or less withdrawing the saine therefrom, the largest dimension is made to coincide with the one dimension of the square opening oi' the frame A; thereupon, the plate B is made to slide to cause the second dimension of the object to coincide with the one which may result between the inner edge of the frame and the inner edge al of the plate, then upon the scale a, b, or a or b at points indicated by the edged and an edge of the frame, the relation existing between both dimensions of the object may be read; or, without moving the plate of the pantometer, by the prolon gation of two sides and the diagonal l com prised in the pantometer, the proportional rectangle may graphically be reproduced and drawn to any desired sizeby the parallels at the sides drawn from any point of the diagonal. The obliques may be repro duced in a similar way. By placing the traine oi' the pantometer parallel to the plane, the oblique is caused to coincide with an angle of the side, C in the frame A, and thereupon, by sliding the plate B till obtaining the rectangle in which said oblique will be comprised as diagonal.

kThe @magasinage ,may ne; applied wat regard 'to curves and ellipse's, by obtaining the dimensions and direction of the quadrant or rectangle withinwhich they are com-- prised. v

In connectlon wlth mixed or pollcintric p lines, the points of tangency` are determined use vdran'fing'g students in academies,

nationalv colleges, high schools and industrial schools, for measuring i'roin a distance therggeneraland partial' proportions of ob,-

jects and the exact inclines of the obliques y andcurves determined by their quadrants the @Hirse by thor rammel@vl lo erhael- Orces.' the .Banniere will; aanta'o oddly loo used o Soa'l'o of proportions aiiaclorthe graphic reproduction of all ldadeotansloo- 'I now declare that what I claim as new and desire to Soou'ro by Letters 'Potent is a 1' 'Alle baratos forv determining tho lororlotloiiso objootesooli'flom a distano@ and the'idegrees *of inclination of the obliques, oolerl'sog a pair of. relatively vadorable Sdoos' oeoo'f' Solid Sldoo bovine' rorootly 'Square' opening' therein provided with srad atioos oo its opposite @dass the @dese of "the squarek opening' being adapted 5 to be hold:` @Si to' bring ono dimension thereof condoom wie an apparent diimason of, the one@ beingobsefvod and f the second slide having oneedge provided with" graduatijons alig'gri'iedv with the 'corresponding graduations along the edge of s ai'd square opening, saidjiirstnamed' edge being a te4 'to beinoved across'said square vopen'- o. movement of* die Sooond Slide boule* eii'ected to 4pick up a second dimension of the said object between the said edge oi the second slide and the parallel edge of the square opening, the body por-tion of said second slide having a series o1c openings in the shape of geometrical figures provided with graduated edges, whereby the proportions the degrees of inclination of the obliques,

comprising a pair of relatively movable slides adapted to slide relatively to each other in. a straight line,` each oi said slides having a square opening therein provided with graduations on the opposite edges parallel to the direction of sliding, the transverse edges of said square openings boing adapted to be held so as to bring one oi said. transverse edges coincident with an apparent dimension oi the object being observed, said relative movement being effected to pick up a'second dimension ofthe. said object between a transverse edge and an edge of the other slide parallel to said transverse edge.

3. An apparatus for determining the pijoportions of objects seen from a distance, as claimed in claim 2, i'n which the body portion of one of the slides is provided with a series off openings in the shape Of' geometrical figures provided with ,graduated edges, whereby the proportions oi various shaped objects-brought into register with corresponding lines at the edges of the said openings inay be determined-'by the relative position of' one ofA the transverse edges of' the square opening in the other slide 'across a portion of one of said geolnetrically shaped openings,

LEON' 'BENEDICTO GLANZER, lVitnesses: i

A. L BELLQ, a A. Flaiano.

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