US2060766A - Compass - Google Patents

Description

INVENTOR ATT F. WEST. JR

. COMPASS Filed Feb. 11, 1936 Nov. 10, 1936.

Patented Nov. 10, 1936 C OMIASS Francis West, In, Chilmarks, Masa, minor to Paul Zuckerman, New York, N. Y.

Application February 11, 1936, Serial No. 63,292

Claims. (Cl. 33-222) This invention relates to compasses and more particularly to so-called parallel reading compasses in which the conventional compass card is eliminated and use is made of markers so arsupported by a pivot l2 upon a suitable standard J3 for swinging movement thereon under the influence of the earths magnetic field. A South indicating rod or needle [4 extends outwardly from the supporting frame i l in the opposite direction from the North indicating needle I 0, and East and West indicating needles l5 and I6, respectively,

extend outwardly at right angles thereto.

Suitable members or markers are mounted illustrated, the North indicating needle Ill and associated rods I! are given a distinctive color such, for example, as red, which differs from the color of the remaining pointers and rods which may, for example, be white, or, if desired, that,

ranged as to indicate that the correct course is within thebowl so as to be in parallel with the 5 being steered when the magnetic element or nee- North indicating needle when the desired course is die is parallel therewith. Heretofore, compasses being steered, and be out of parallel therewith if of this type have been limited to those having flat the wrong course is being steered. As a result, a top bowls, such as bowls of cylindrical shape, brief glance at the compass to determine if the with the parallel markers formed by grid wires needleis inparallel with the cooperating markers positioned over the fiat tops of the bowls. Such is suflicient to determine whether or not the -an arrangement can not be employed for spherical proper course is being followed. As hereinafter bowl compasses because the curvature of the described, the position of the markers is set in bowl top destroys the parallelism of the markers accordance with the course to be steered. or lines except when viewed from directly 'over- As illustrated, these members are formed by a head. pair of small rods H which are secured to the 'An object of this invention is to provide a lower metallic hemisphere 6 and extend inwardly parallel reading mechanism constructed and artoward the center of the compass bowl, preferably ranged for use with spherical bowl compasses as at a plane below the plane of the North seeking well as with other types. element. The rods are parallel and preferably This and other objects which will be apparent are so spaced as to lie on opposite sides of a verto those skilled in this particular art are accomtical plane passing through the needle Ill. In the plished by means of the present invention, one illustrated embodiment, similar pairs of small rods embodiment of which is illustrated in the accoml8 are arranged to cooperate with the South indi- P y d ing in which, eating needle I4 while rods [9 cooperate with the Fig. 1 is a perspective view of a spherical bowl East indicating needle l5, and rods 20 with the compass provided with parallel reading mech- West indicating needle l6. anism constructed in accordance with one em- The compass bowl is mountedin a frame 2| bodiment of this invention. supported upon a cushion base 22, and the as- Fi 2 is a p plan V w f he mp wn sembly may be mounted in any conventional comin Fig. 1, and pass support, not shown. The frame 2| has an Fig. 3 is a transverse sectional view of the comindex 23 cooperating with the degrees marked on Bass 0 the line 3 of t Supp t the azimuth ring 8. It will, of course, be apparent vframe being omitted. that the azimuth ring can be provided with con- As illustrated, the invention is shown in connecventional compass markings if desired in place of tion with a spherical bowl compass of well known th scale of degrees, construction. 'The spherical bowl is formed with In operation -t compass b 1 ith it azian upper glass hemisphere 5 and a lower metallic muth n r rotatably adjusted in the frame 2 hemisphere 5 with which is cohhfacted the in accordance with the direction which is to be sioh chamber 7 phrhht ejfp-ahsloh and f steered, and the correct course is followed by so 40 tion of the m wlth when the l 1s fined steering as to maintain the needles of the mag- The two henhspheres are Stalled Permanently netic element in parallel with the associated gather m the present lanventlpn an azlmutb parallel rods. It will be apparent from Figs. 1 ring 8,hav1ng the usual 360 markings thereon, is and 2 that a glance only will sumce to tell a secured to the bowl as a part thereof over a sup- 5 porting flange 5 which is joined to the edge of the namgawr if the crrect coutse being steered lower hemisphere To simplifyreading the compass, when the mag- I The magnetic element includes a North indif elemenffi provided wlth more than the eating element in the form of a rod or needle in Smgle North 'f h needle m u for extending outwardly from a supporting fram ample, as the additional needles I4, I 5 and I 6, 5o

North indicating needle may be given some distinctive shape.

When a change in course is to be made, the compass bowl and associated azimuth ring. are rotatably adjusted in its frame until the degree indicating the desired course is positioned opposite the index 23. The course is then followed 7 by so steering as'to maintain the proper parallelism between the needles of the magnetic element and the parallel rods.

' The invention can be variously modified and adapted within the scope of the appended claims.

I claim:

i. A compass having a bowl, 9. North indicating needle supported in said bowl, an elongated member located within said bowl and extending alongside said needle in position to cooperate therewith to indicate a predetermined'course when said needle is in parallel with said member, and means for adi'ustably supporting-said bowl whereby the position ofsaid member can be set in accordance with a predetermined course.

2. A compass having a spherical bowl, a magnetic element supportedin said bowl including 4 a North indicating needle, a member supported on the wall ofsaid bowl and extending inwardly thereof in pcuition to cooperate with said needle to indicate a predetermined course when said needle is in parallel with said member, and means for rotatably supporting said bowl whereby 'the ber 10, 1936. Disclaimer filed June Hereb enters this disclaimer of claims 1,- Gazette June 2?, 1939.]

position of said member can'be set in accordance with a predetermined course.

3. A compass having a spherical bowl, an azi-' muth ring secured to said bowl, a North indicating element supported in said bowl, a rod mounted in said bowl and extending inwardly adjacent said element in position to cooperate therewith to indicate a predetermined course when said element is in parallel with said rod, and a frame for rotatably supportingsaid bowl and azimuth ring whereby the position of said rod can be set in accordance with the course to be steered. I

4. A compass having a bowl, a direction indicating needle mounted within said bowl, parallel rods located within said bowl on opposite sides of said needle to cooperate therewith for indicating a predetermined course when said needle is in parallel with said rods, and means for setting the position of said rods in accordance with the course to be steered.

5. A compass having a bowl, a direction indicating needle located within said bowl, parallel rods supported in said bowl and located on opposite sides of said needle to cooperate therewith for indicating a predetermined course when said needle is in parallel with said rods, an azimuth ring associated with said bowl, and means for adjustably supporting said bowl so that the positions of said rods can be set in accordance with the course to be steered.

' FRANCIS WEST. Js.

Patent dated Novem- 6, 1939, by the patentee.-

4, and 5 of said Letters Patent.

North indicating needle may be given some distinctive shape.

When a change in course is to be made, the compass bowl and associated azimuth ring. are rotatably adjusted in its frame until the degree indicating the desired course is positioned opposite the index 23. The course is then followed 7 by so steering as'to maintain the proper parallelism between the needles of the magnetic element and the parallel rods.

' The invention can be variously modified and adapted within the scope of the appended claims.

I claim:

i. A compass having a bowl, 9. North indicating needle supported in said bowl, an elongated member located within said bowl and extending alongside said needle in position to cooperate therewith to indicate a predetermined'course when said needle is in parallel with said member, and means for adi'ustably supporting-said bowl whereby the position ofsaid member can be set in accordance with a predetermined course.

2. A compass having a spherical bowl, a magnetic element supportedin said bowl including 4 a North indicating needle, a member supported on the wall ofsaid bowl and extending inwardly thereof in pcuition to cooperate with said needle to indicate a predetermined course when said needle is in parallel with said member, and means for rotatably supporting said bowl whereby 'the ber 10, 1936. Disclaimer filed June Hereb enters this disclaimer of claims 1,- Gazette June 2?, 1939.]

position of said member can'be set in accordance with a predetermined course.

3. A compass having a spherical bowl, an azi-' muth ring secured to said bowl, a North indicating element supported in said bowl, a rod mounted in said bowl and extending inwardly adjacent said element in position to cooperate therewith to indicate a predetermined course when said element is in parallel with said rod, and a frame for rotatably supportingsaid bowl and azimuth ring whereby the position of said rod can be set in accordance with the course to be steered. I

4. A compass having a bowl, a direction indicating needle mounted within said bowl, parallel rods located within said bowl on opposite sides of said needle to cooperate therewith for indicating a predetermined course when said needle is in parallel with said rods, and means for setting the position of said rods in accordance with the course to be steered.

5. A compass having a bowl, a direction indicating needle located within said bowl, parallel rods supported in said bowl and located on opposite sides of said needle to cooperate therewith for indicating a predetermined course when said needle is in parallel with said rods, an azimuth ring associated with said bowl, and means for adjustably supporting said bowl so that the positions of said rods can be set in accordance with the course to be steered.

' FRANCIS WEST. Js.

Patent dated Novem- 6, 1939, by the patentee.-

4, and 5 of said Letters Patent.

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