US1196240A - Leveling instrument. - Google Patents

Description

l. HUSBY. LEVELING INSTRUMENT. APPLICATION FILI-:D AUG. I2, 1914.

g Patented Aug. ,29, 1916.

INGrVAR HUSBY, 0F ST. PAUL, MINNESOTA.

LEVELING INSTRUMENT.

Specification of Letters Patent.

Patented Aug. 2Q?. 19113.

Application filed August 12, 1914. Serial No. 856,368.

To all whom t may concern:

Be it known that I, lNcvAR HUSBY, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State oi' Minnesota, have invented certain new and useiiul Improvements in Leveling Instruments, of which the following is a specification.

My invention relates to an instrument for obtaining levels, and is particularly applicable to a general practical use by persons obtaining drainage lines and levels particularly on farms and gardens.

The full objects and advantages ot' my invention will appear in connection with the detailed description thereof and are particularly pointed out in the claim.

1n the drawings illustrating the application of my invention in one form, Figure 1 is an elevation view showing the manner of using my appliance. Fig. 2 is a face view oi' the device. Figs. 3 to 6, inclusive, are enlarged sectional detail views of parts of the device.

As shown, l provide an upright member 10 having upon the lower end thereof a foot extension 11 and oiiset portions 12, 13 turned in the opposite direction from the foot portion 11. The upright 10 is provided with a longitudinal groove 14 in which is countersunk a glass tube 15 which projects through the cap 13 and has a right-angled bend 16 adjacent the foot 11 between side guard members 17 and 13. The bend 16 may be slightly expanded at its center, as best shown in Fig. 3, and has applied thereto a rubber tube 19, which tube is of a desired length, a suitable length being ii'fty ieet. Extending through the apertures in extensions 12, 13

is an iron spindle 2O pointed at its lower end 21 and being tted with a handheld 22 at its upper end. The upright 10 is held in adjusted position on spindle 20 by means of a pair ot' collars 23 and 24 below and above eX- tensions 12, 13, respectively7 said collars being held in the desired adjusted position by means of set-screws 25, as best shown in Figs. 3 and 6. The lower portion ot' the glass tube 15 is held in position upon member 10 by means of a keeper-bar 26. rlhe front of the bar 10 is graduated in any desired manv -The pointed portion 21 of one of said members is driven into the ground until the foot 11 rests flush with the surface; the other member is moved to the point at which a relative level rating is to be taken and also has its spindle 21 driven into the ground until the foot 11 is flush therewith. The glass tube 15 and the connected rubber tube 19 are partially illed with water and a level indicated by the dotted line 30 in Fig. 1, is shown by the tops of the column of water in the respective tubes. By taking the ditierence in the ratings of these columns of water from the scale on the member 10 the difference in level between the two foot members 11 is obtained. rlie length oi' the member 10 may be varied as desired and the position of the member upon the spindle 20 may be adjusted in accordance with the work being done. It the soil is very hard it may be desirable to have the front foot 11 quite close to the point 21, and in any event diiierent tubes 15 may be employed so that where the radiant is sharp the cilective leveling capacity of the tube may be increased.

The simplicity and eiiiciency of my device will be apparent. With it a farmer or mechanic having no scientific or mathematical knowledge may readily and accurately lay out a grade for a ditch drain pile or other drainage purposes or ior leveling a lawn or field. The latter use is particularly desirable where irrigation is employed and where it is necessary to have a proper slope to the land.

I claim:

A leveling instrument comprising a pair of graduated uprights, glass tubes in said uprights, a flexible rubber connecter for the glass tubes, there being water in the tubes so that the level thereof will show in the glass tube alongside said graduations, lugs at the top of said uprights extending backward from the glass tubes, feet on the bottom ofsaid uprights extending beyond the ground, the depth of insertion being varisaine on all sides, holes in said lugs, correable through said collars. 1D sponding holes in said feet below the holes In testimony whereof:I I ailix my signature in said lugs, pointed metallic spindles in said in presence of two witnesses.

` holes, collars with set screws on said spindles INGVAR HUSBY.

:for securing the saine, and hand holes on the Witnesses: tops of said spindles for carrying the levels F. A. WHITELEY, and for inserting said spindles into the H. A. BOWMAN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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