US2534440A - Beam compass - Google Patents

Description

Dec. 19, 1950 A. GUINEZ 2,534,440

BEAM COMPASS Filed July so, 1948 s Sheets-Shee t 1.-

=7 INVENTOR. ryxzionz'a fied/zz,

lllllllllllllllllLll ATTD RN EYS A. GUINEZ Dec. 19, 1950 BEAM COMPASS 3 Sheets-Sheet 2 INVENTOR. 17/770020, 62/272 a2,

Filed July 50, 1948 A mm A. GUINEZ BEAM COMPASS Dec. 19, 1950 3 Sheets-Sheet 3 Filed July so, 1948 ATTD RN EYS Patented Dec. 19, 1950 UNITED STATES PATENT OFFICE Antonio Guii ie z, New York, N. Y., assignor of forty percent to Joseph Blasig,'New York, N. Y.

Application July so, 1948, Serial No. 41,434

1 1 Claim.

This invention relates to drawing instruments used by artists, draftsmen and the like, and in particular an extended scale or beam compass wherein beam, scales, or straight edges are resiliently held together by spring clips which provide means for adjustably mounting points, scales, or angles between the elements.

The purpose of this invention is to provide a drawing instrument, including a plurality of parts, that may readily be assembled in dfierent positions for different purposes.

The usual beam compass is formed with an elongated rod or stick with an attachment including a point'and also an attachment for ho1ding a pencil secured in adjusted positions by thumb screws. The use of drawing instruments of this type is limited by the construction to describing circles and the like and as it is often desired to use adjustable means for measuring distance between points or as inside or outside calipers, it has been found desirable to construct devices of this type with straight or L-shapecl bars and resiliently hold the bars by resilient means. With this thought in mind, this invention contemplates a plurality of straight elements frictionally held together by spring clips with graduated scales, points, or angularly positioned elements clamped between the bars.

The object of this invention is, therefore, to provide means for resiliently clamping bars and the like together so that the position of one bar in relation to the other may readily be adjusted, and also that elements may be clamped between the bars.

Another object of the invention is to provide means for constructing calipers, beam compasses and measuring instruments with the use of conventional structural shapes, spring clips, points and the like.

A further object of the invention is to provide means for assembling elements now in use to form beam compasses and the like which are comparatively simple and inexpensive.

With these and other objects and advantages in view the invention consists of the new and useful combination, construction, and arrangement of parts as hereinafter more fully described, set forth in the claim appended hereto, and disclosed in the accompanying drawings forming part hereof, wherein:

Figure 1 is a view showing a side elevation of a device that may be used as a caliper including angles and points irictionally held together by a spring clip.

Figure 2 is a view showing an end elevation of the device shown in Figure 1.

Figure 3 is a cross section taken on line 3-3 of Figure 1.

Figure 4 is a view showng a side elevation similar to that shown in Figure 1 showing one of the points replaced by a pencil holding socket forminga beam compass.

Figure 5 is a cross section taken on line 5-5 of Figure 4.

Figure 6 is a view illustrating agraduated or calibrated scale resiliently held between angles by a spring clip.

Figure 7 is a view showing an end of the opposite side of the scale shown in Figure 6 with part broken away.

Figure 8 is a cross section through. the device shown in Figure 6 taken on line 8--8 of Figure 6.

Figure 9 is a plan View of a device similar to that shown in Figure 6 illustrating the use of a plurality of springclip's at difierent points on the device.

Figure 10 is 'a view of a side elevation of the device shown in Figure 9.

Figure 11 is a detail showing one end of the device shown in- Figure 9 with a point clamped between the elements.

Figure 12 is a similar view illustrating a straight edge or scale clamped between the elements.

Figure 13 is also a similar view showing a triangle or angularly disposed bar clamped between the elements.

Figure 14 is a cross section through the device showing the straight edge or scale shown in Figre 12 clamped therein.

Figure 15 is a similar section showing the point illustrated in Figure 11 or the member shown in Figure 13 clamped between the members of the device.

Figure 16 is a view illustrating a modification wherein a micrometer is positioned on one end of one member with the head thereof adapted to engage a second member slidably mounted on the former member whereby the distance between two points may be determined with the micrometer.

Figure 1'? is a view showing a side elevation of the end of the device to which the micrometer is attached with parts broken away and parts shown in section.

Figure 18 is a plan view showing one end of the device illustrated in Figure 16 with angularly disposed bars positioned therein.

Figure 19 is a similar view showing the bars extending from opposite sides of the device.

Figure 20 is a cross section taken on line 2ll20 of Figure 18.

Figure 21 is a cross section taken on line 2 I-2I of Figure 19.

Referring now to the drawings, wherein like reference characters denote corresponding parts the instrument of this invention includes, particularly as shown in Figures 1 and 2, angles I and II resiliently held together by a spring clip I2 and bars I3 and I4 having points I5 and I6 at their outer ends, which are clamped between the angles as shown.

In this design the inner ends of the bars l3 and I4 are bent at right angles providing flanges I1 and I8 which extend between the horizontally disposed legs of the angles I0 and II and the lower ends of the bars I3 and I4 are provided with shoulders I9 and respectively.

The spring clip I2 is formed with jaws and 2| with the jaws provided with ears 22 and 23 through which the jaws are pivotally connected by a pin 24. The end 25 of the jaw 20 extends vertically downward, and the end 26 of the jaw 2 I extends horizontally, as shown.

In the design shown in Figure 4 the bar I3 is replaced by an L-shaped bar 2'! that is frictionally held between the angles I0 and II by the spring clip I2 and the outer end of the bar 21 is provided with a socket 28 in which a pencil or other suitable marking element 29 is frictionally held. The upper edge of the bar 21 is provided with a flange 30 which is gripped between the flanges of the members I0 and I I.

In the design shown in Figure 6 the bars I3 and I4 are replaced by a rule, straight edge or scale 3! having a flange 32 on the upper edge and provided with graduations 33 on one side and 34 on the other as shown in Figures 6 and '7. It will be understood that the member 3i may be of any suitable length and the graduations or calibrations may represent any suitable units of measure.

In the design shown in Figures 9 and 10 the bars I3 and I4 are replaced by comparatively long angles 35 and 35 with additional spring clips 3! and 38 provided on the extending ends so that elements may be frictionally held between the angles at difierent points throughout the length thereof. The edges of the angles 35 and 36 may be provided with graduations 39 and 40 which may also be placed on both sides of the members.

This device may be used as illustrated in Figures 9 and 10 or the bars I3 and I4 may be clamped between the angles as shown in Figure 11 and the bars may be replaced by a straight edge M as shown in Figure 12 or an angularly disposed bar 42 as shown in Figure 13. The straight edge 4| is formed with a flange 43 at the center that may be gripped between the angles 35 and 36 as shown in Figure 14 and the bar 42 which may be used as a triangle is provided with a flange 44 that is clamped between the angles 35 and 36 as shown in Figure 15.

In the device illustrated in Figure 16 the angles 35 and 36 are resiliently held together by spring clips 45 which also hold bars 46 and 41 similar to the bars I3 and I4. The bars 46 and 41 are formed with flanges 48 and 49 and a spring clip similar to the clip 45 is used to clamp the bar 41 in position. This clip is omitted from the drawing for the purpose of illustration. The micrometer 50 is provided with a slot 5| which is placed over the edge of the angle 36 and with the end 52 of the head 53 of the micrometer engaging the edge 54 of the bar 41 the distance between the bars 46 and 41 may be accurately determined. It will be understood, however, that the micrometer may be mounted upon or used in connection with the angles or scales in any suitable manner.

In Figure 18 angularly positioned bars 55 and 56 with flanges 51 and 58 on the inner ends thereof are clamped between the angles 35 and 36 with spring clips which are omitted for the purpose of illustration, and in the design shown in Figure 19 the positions of the bars 55 and 56 are reversed wherein one bar extends from each side of the device. These bars are illustrated as extending on an angle of 45, and it will be understood that similar bars may be provided which will extend at difierent angles. It will also be understood that different elements may be used in combination with and frictionally held between the angles I0 and II or 35 and 36 so that the device may be used for different purposes, and it will also be understood that spring clips of any other type or design may be used.

It will also be understood that other modifications may be made in the design and arrangement of the parts Without departing from the spirit of the invention.

What is claimed is:

An instrument comprising parallel bars, a spring clip having gripping jaws and positioned with the ends of the jaws in engagement with opposite surfaces of the parallel bars for resiliently urging the bars together, and bars with flanges on one of the ends thereof and points on the other carried by the parallel bars and po sitioned with the flanges thereof frictionally secured between the parallel bars.

ANTONIO GUIfiEz.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number

Images