US2006809A - Longitude position finder - Google Patents

Description

July 2 1935.

E. KLOHT LONGITUDE POSITION FINDER Filed July 14, 19:3

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ATTORNEY Patented July 2, 1935 I I UNITED STATES PATENT OFFICE I 2,006,809 LONGITUDE rosrrIoN, FINDER Ernest Kloht, New York, N. Y.

Application July 14, 1933, Serial No. 680,363

3 Claims. (01. s3-1) The main object of this invention is to pro- Vernier 26 is mounted on the inner edge 23 of vide a device for accurately determining the the sector I and is deformed to lie flat upon the longitude location of a ship, of which the device graduated face 2'! of the are 20. is part of the equipment, when given the latitude. An altitude are 28 cooperates with the remain- 5 Another object of the invention is to provide a ing members and has graduations 29 from zero 5 device for locating and charting the longitude of 30 to 90 degrees near the lower end and from zero a ship when the latitude and sun declination are to 20 degrees at the upper end. The lower curved given. end of this altitude arc is pivotally secured to a. The above and other objects will become ap- Vernier carriage 3! by a pin 32. The carriage 3| parent in the description below, in which charis provided with a vernier blade 33 upon which 10 acters of reference refer to like-named parts in graduations 34 are inscribed. A locking carriage the drawing. 35 is coupled to the Vernier carriage 3| by a Referring briefly to the drawing, Figure 1 is a threaded adjusting screw 36 which latter enfront elevational view of the finder. gages both the Vernier and locking carriage.

Figure 2 is a side elevational View of Figure 1. The adjusting screw has a knurled enlargement 15 Figure 3 is a top plan view of Figure l. 31 thereon which is engaged by the fingers when Figure 4 is a cross sectional view through one adjustment is to be made. of the sectors showing the means for locking the The: sector I5 has a vernier carriage 38 thereon Vernier carriage in place. which is adjustably coupled to a locking carriage Figure 5 is a bottom plan view'of two cooper- 39 by an adjusting screw 4%. Said Vernier car- 20 ating sectors showing their relation. riage 38 is coupled pivotally to a second vernier Referring in detail to the drawing, the numercarriage 4| which latter rides on the inner edge al I!) indicates a flat semi-circular half ring over of the altitude are 28 and said Vernier carriage approximately one half Whose face arcuate gradis equipped with a locking carriage 42 and aduations from 0 degrees to 80 are graduated and justing screw 43. The carriage 38 and 4| are 25 are indicated by the numeral II. The zero gradpivotally coupled by a hinge pin 44. uation I2 is located centrally on the ring. The On the reverse sides of the altitude are 28, ends of the half ring it) are squarely recessed at r to and Sector emu-ate Channels 45 a e l3 as shown in Figure 3. On one side of the cutformed. All of the Vernier and locking carriages out portions I3 the face of the ring ends in are p v d w h k ys 6 w h ar i t gral 30 has tapering surfaces I4 which permit the fold With their related parts a register in the chaning over to a 15 degree angle of a cooperating neiS All Of the locking a es 35, 39 and semi-circular sector l5. The open ends of the 45 have threaded apertures 47 in which the sector l5 are recessed at l6 so as to match the threaded Shanks 43 0f knurled locking s rews 49 ends of the ring It. The ends of the sector 15 are insertedand ring ID are mutually pivoted to each other T device iS p tO determine the 10ngiby pins n in such fashion as to permit the sectud n wh c a p is located at the e i tor [5 to swing to a position super-imposed over readingeXemplei y Setting the eamage the ring it. This sector is graduated over its en- 33 at 42 d s 26 m u a d s ttin th 0 tire face, the graduations l8 increasing on both ve n e at 3 degrees 44 minutes on t e dsides of the zero graduation I!) which occurs uations 011 member and Setting the V n e 38 at the centre of the 5991301; at 17 degrees 53 minutes south, the reading on Aligned with the zero graduation l2 one end of the e 29 Will be 49 degrees 34 utes, Wh c an are 20 is removably fixed to the inner marwill Intimate the longitude of h p- Th ginal edge 2| of the ring In and rises arcuately adu on a 20 register longitude. altl- 45 from the latter. The opposite end of the are 20 d are registers t altitude of e m is adapted t Sljdably pass through rectangmar rlng l0 registers the latitude and sector l5 indiopen channel 22 formed in the inner marginal Oates; the decline/01011- edge 23 of the sector l5. Adjacent one side of It 15 to he noted that eeltaln an n o m the channel a tapering pocket 25 is formed. The and eonstnictieh y be made W t departing 50 intersection of the pocket and channel is at the from the Spirit D O the V t center of thickness of the sector and the reading I claim: d

of the graduations is made from this position. 1. A semi-circular flat band, a. semi-circular The graduations occur on one face of the are 20 declination sector, said band and sector being and are indicated by the numeral 24. A curved graduated and mutually -fie band 55 ing its hinged ends tapered for swinging declinarising above said sector, apivotally' joined pair ofverniers engaging said altitude arc and sector, a Vernier carriage riding on'said band having said altitude arc pivotally secured thereto and means for guiding and locking said verniers on said cooperating members. V

V 2.'A-semi-circular fiat band, a semi-circular declination sector, said band and sector being graduated and mutually hinged, said band tapering at the outer corners to-adaptthe declination sector to swing to an angle of fifteen degrees with respect to said band, a graduated altitudearc movably joined to said band and rising above said sector, a pivotally joined pair of verniers engaging said' altitude arc and sector,;a Vernier carriage riding on said band having said altitude arc pivotally secured thereto and a curved channel on said ,band, sector and altitude are for guiding said verniers around said cooperating members, and means for locking said verniers in any desired position. i V

3. A' semi-circular flat band, a. semi-circular declination sector, said band and sector being graduated and. mutually hinged, a graduated altitude arc movably joined to said band and rising above said sector, a pivotally joined pair oi verniers engaging said altitude arc and sector, a vemier carriage riding on said band having said altitude arc pivotally secured thereto and a curved channel on said band, sector andaltitude are for guiding said verniers around said cooperating members, locking carriages engaging said sector band and altitude arc and partly registering in said channels, locking screws for securing said carriages, and Vernier adjusting screws engaging said verniers and carriages to adjust the former.

ERNEST KLOHT. 20

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