US1411151A - Drawing instrument - Google Patents

Description

R. D. BECKER.

DRAWING INSTRUMENT. APPLICATION FILED 05c. I6, I919. RENEWED Nov. 17.1921.

1,41 1 1 51 Patented Mar. 28, 1922.

. Drawing I p mgr'is a fulh clear,and:exact descriptlon.

UNITED: S ES PATENT" F C RUnoLPH 13mm, "or nnwyfoax; iv. Y.

inaAwINe INSTRUMENT.

lpplication-flled December 16,-1919,'Serial1(o 845,876.--Renewed November 17, 1921.

ToaZZ whom it may concern:

Be it known'that. I, RUDOLPH. "BriqKnn, a citizen of the United States,and a resident of the city of New York,1borough otMan- Jhattan, .in t the county "and State of 'New York, have invented anew and Improved Instrument, of which the followhis.invention relates to drawin .inst1'u ments, andhas forian objecttoprovide an .zimproved construction of means ;used in .drawlngovalsielther with apen or pencil.

vprovision of a deformable men'1ber and;

Anotherobject ofJtheinventi-on is to provide an instrumentfor "guiding a pen-or pencil in' drawing an oval which may be adjusted :to produce any 'form of oval de sired.

A further objeet,*morespecifically, is the means for deforming the same and then holding the member in its setposition While the scribing. instrument is guided thereby.

In the accompanying drawing:

Figure 1Zis a perspective view of an instrument disclosing an embodiment otthe invention.

Figure .2. is alongitudinal horizontal section through thelstructure shown in Figurel. j

Figure 3 isia longitudinal vertical, section through Figure 2 on line Figure 4 is a view-similar to Figure 3 eX- -cept the parts areshown collapsed or as- It will be observed plate 7 is formed with sections 8- and 9, said sections extending from the enclosure 6 to the opposite. edges of the casing whereby the ends of the resilient rule or guide 10 may slidingly fit thereover as the end of the rule 10 is provided with apertures. The guide or rule 10 is made preferablyv from some resilient metal, as for instance steel, and is provided Specification of Letters Patent.

allyto a downwardly to its lowered position.

10 in the desired. position noted that a set of an oval and when said half has Patented Mar; 25, 1922.

with graduations 11 of any desired kind,

r and I also with a number of apertures 12' at the front end for permitting the proper bowing 'ori, flexing when a comparatively small oval is to be provided, The slide 5 has the' forward end 13 extending through the guide 10 at the center to which it isriveted or otherwise rigidly secured slide moves the guide 10 will moving the slide backand forth long itudi .inally theraxis of the so that us the also niove.- By

ovalima'y be deter- 1111-11811. In order: to'vary 'oriregulate the width :ofthe' Oval the 'retaining plate 14 is .providedlhaving extensions" at each "end through which rlvets or other pivotal securing means are passed so that theplate Mmay freelyswing Within certain limits. When therparts arein the position shown inFigures 1*and'2 and it is desired to provide a wider oval plate 14 is swung upwardly until thesame is disengaged fromthe guide 10 and then-the guide. manually moved "laterpoint opposite the desired slot 16, after which the. plate 14 is again moved Itwill be notedthat the plate. It isiprovided with a number-of slots 16 forholdingithe guide It will also be graduations 17 is arranged on the upperfface of theplate ltsothat'each side of the guide will be bowed to the same extent. Asshown in the drawing the sides of theguide are bowed so as to be one inch from the center of the slide 5, while theend 18 of theguide' is 'two'inches'from the plate 14, This arrangement provides for half of been applied to an'article the entire instrument is reversed so as to make the other half of the Serial No. 515,975.

so j

oval. This will result in providing an oval two inches Wide and four inches long. Ordinarily the guide 10 and the slide 5 are grasped when the end 18 and the parts are slid back and forth until the desired size is secured, but if afine adjustment is de sired the wheel 3 is moved properly.

.When in use the parts are assembled or collapsed to the position shown in Figure 4, wherein the frame 1 acts as a casing for the slide 5, guide 10' and associate parts. If it should be desired touse the device when in. the position shown in Figure 4 the plate 14 is first raised or thrownback and the guide 10 and slide 5 grasped near point 18 and these members moved to approximately the position desired for securing the desired preventing any accidental slipping of the duce any sized and any 'fact, slightly more than instrument is then turned around desired one or any scribed comprising a sized oval, plate 14 is then lowered and the sidesof the guide 10 are inserted in the desired slots 16, after which the parts are moved back and forth as cirmimstances d emand for securing a better adjustment. fine adjustment is secured by rotating wheel 3. The device is then placed upon a construction line with the pointer 19 touching the line and the line extending longitudinally beneath the slot 20 in slide 5. ,A pencil.

or pen is thenplaced against the guide 10- and the desired mark produced. In order that an accurate oval may be secured the other half of the 22 may instrument When scribing a line.

WhatIclaimiszfi v 1. An instrument of the character described comprising a resilient strip acting as a guide, means for flexing said strip to proshaped oval, and a casing carrying said means and adapted to receive said strip when not in use. v

2. An instrument of the character demounted slotted plate at the front of the easing, a bowed strip adapted to move inand out of the casing through certain of the slots in said plate, a guiding member in said casing 'posltioned'adjacent said slotted plate,

Said guiding member being formed with a slot, a slide loosely extending through said guiding member and rigidly secured to said strip centrally thereof, and means for ad- 'justing said slide.

3. An instrument of the character described comprising a casing, a guid ng casing, a I pivotally transverse bar arranged, in the casing, a strip of flexible material having openings at the ends n'herebysaidends may slide over said bar, a pivotally mounted plate arranged at the end of the casing formed L-shaped in cross section having slots in one leg of the L adapted to accommodate said strip so as to space the sides of the strip an equal :distance from a central line, and a sliding member arranged centrally of the casing and rigidly securedv to said'strip centrally thereof, said'slide and said plate being formed with graduations.

at. An mstrument'of; theucharacter described comprising a casing, a resilient memher for forming half an oval, a slide longer than it is Wide,.having a longitudinally arrangedslot, said slide being connected with the center of saidresilientmember for vary ing the contour thereof, a pointerconnected with said casing opposite the center of said slot, andv means carried by the casing for locking the side portions of the resilient member when formed: into proper. shape.

'5."An instrument of the character described-comprising a looped member. pro-:

ducing half an oval, said looped member being resilient, a casing, a pivotally mounted plate having a number adapted to accommodate or said looped the side portions said looped member formed with a threaded jsection atthe end opposite that secured to 7 the looped member, said threaded section projecting into said enclosure, and a nut positioned on the threaded section and arranged in said enclosure whereby when the nut is rotated said slide Willbeadjusted longitudinally fo varying the curvature of the looped member. V

Y "RUDOLPH D. BECKER.

of slots therein L .75 member, a guiding bar arranged'in the casing for 'guiding-theinner ends of said looped member, said bar' having an enclosure, a slide secured-to thecenter ofv

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