US1220407A

US1220407A - Leveling instrument.

Info

Publication number: US1220407A
Application number: US84815A
Authority: US
Inventors: George W Fogelsong
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-01-06
Filing date: 1915-01-06
Publication date: 1917-03-27
Anticipated expiration: 1934-03-27

Description

G. W. FOGELSONG. LEVELING |NSTRUMENT. APPLICATION FILED IAN. 6. 1915.

Patented Mar. 27

Suva/nto@ N lil LEVELING INSTRUMENT.

application mea Januaye, 1915. serial No.

To all 'wiwm z't-mag/ concern.'

Be it known that I, GEORGE W. FoGELsoNG, a citizen of the United States, residing at Idaho Falls, in the county of Bonnesville and State of' Idaho, have invented certain new and useful vImprovements in Leveling Instruments, of which the following is a specification.

My invention relates to ments.

The primary object of my invention is to provide a leveling instrument of a construction which will eliminate the use of the well known spirit level which at best gives the operator but a general idea as to the true angle or verticality of the particular plane involved.

Another object of my invention is to provide a leveling instrument wherein no easily breakable parts, such as ones of glass, are unprotected, and wherein the particular angle of a plane may be ascertained by observing indicating means at the side or top of the article.

A still further object of my invention is to provide a leveling instrument which is simple in construction, eiicient in operation and durable in use and capable of being easily manufactured at low cost.

With these and other objects in view, my invention relates to such details in construction, combination and arrangement of parts, as will be illustrated in the accompanying drawings, described in the following speciiication and set forth in the claims.

Figure l illustrates an embodiment of my invention in side elevation;

Fig. 2 is a top edge or plan view of the embodiment of my invention vantage the sight opening;

Fig. 3 is a cross sectional view taken on the line 3-3 of Fig. 2,; i

Fig. 4 is a longitudinal sectional view taken on the line 4 4' of Fig. 2, and

Fig. 5 is a erspective view of my preferred form o indicator.

In .the drawings, like reference characters designate like or similar parts throughout the views.

The preferred embodiment of my invention consists of a stock 1 which has a central sight opening 2 provided therein. The opening 2 communicates with a recess 3 extending completely through the stock withln leveling instruthe recess 3 is a hollow container or Specication of Letters Patent.

showing to ad-v 1. Seated.

Patented Mar. 27, 191'?.

ses.

casing 4 which is flatly cylindrical in configuration and which is constructed of transparent material such as glass. Casing 4 flue to its cylindrical form has two side walls extending at a right angle to the

walls

5 and 6 1s a peripheral wall 4. The sa 5c walls are disposed within the recess -with their outer faces flush with the surfaces of the sides of the stock l. Provided at the center of the side walls on their inner surfaces are bearing notches 8 and 9. Opening 2 is of less width than the stoel; 1

In the casing I mount an indicator 11 which is formed a single piece of flexible wire and is provided with indicator inem bers 12 extending transversely of the stock and container and terminating short of each other. The indicator 11 has side arms 13 which are bent inwardly at 11 and outwardly and then inwardly to form bearing portions 15. embers l2 are terminations These portions 15 converging portions 17 which are connected by a transverse portion 18 on which is mounted a weight 16. On the peripheral wall fl is provided an outwardly extending neck 19 normally closed by a stopper 20 removably fas- A quantity of equilibrant or is preferably contained In order to enable the angle of the plane in question to be ascertained, suitable graduations or indications 21 are provided on the peripheral wall 4 of the casing and indications or graduations 22 are provided on either or both of the sides of the casing, to coperate with the indicator. The stock 1 is preferably cut away at 23 to provide a 13 to slide in while positionlng the container in proper posibservation through opening 2. Plates 24 may extend across the sides of the container and be fastened as by screws 25 to the stock, in order to secure the container within the stoc In assembling the parts, the container while empty has the indicator inserted through the opening at neck 19. In view of the fact that this indicator is yieldable, the arms 13 may be moved toward each other so as to render the indicator bendable to a slight width in order t0 pass through the opening at the neck. The arms 13, after the indicator is within the container, will yield away from each other at the bearing portions 15 so that the bearing portions 15 will extend into the bearing notches 8 and 9. Thus the spring action of the indicator maintains the bearing portions l5 in engagement with the notches. After the indicator has thus been inserted into the container, the equilibrant 21 is poured thereinto and the stopper 20 is I then applied to the opening of neck 19.

Thereupon the casing is moved transversely of the stock 1 so that the container will move into recess 3 and the neck 19 will move into groove 23. After the container is thus mounted, the plates 24 are screwed to the stock. As far as fastening of the container is concerned, but a single plate 24 need be provided, and this one be fastened on the side of the stock where the groove 23 opens. However in addition to serving as fastening means, the plates 24 serve as guards or shields for the container to prevent fracture, and therefore two of the plates 24 are preferably provided.

In use, the stock 1 is placed against the de- -ed surface. As the bearing portions 15 pifotally mount the indicator in the bearing recesses 8 and 9, this indicator will always seek the vertical. In Order to promptly steady the indicator, the equilibrant 21 is provided. The weight 16 is provided to maintain the indicator in a vertical position and when the indicator vibrates rapidly, the equilibrant acts on the arms 17 thereof and on the weight to quickly steady the indicator. In ascertaining the angularity of various planes, the stock of course together with the container moves relatively to the indicator whereby, the different indications at 21 and 22 will be brought opposite the members 12 so that the correct indications may be observed through the sight opening 2 or at either side of the stock.

As merely the preferred embodiment of the invention has been illustrated and described, it is to be understood that changes in the details of construction may be resorted to without departing from the spirit and scope of the invention.

Having thus described my invention what I claim is 1. A level having a frangible casing, an indicator within said casing, means to cause said indicator to seek the vertical, a stock provided with a recess in which the casing is positioned and provided with a groove, said casing having an extension for insertion of the indicator and an equilibrant, said casing being positioned in said recess, and said extension being positioned in said groove to prevent turning of the casing relative to the stock.

2. A level having an indicator casing, an indicator within said casing, astock member provided with a sight opening, a recess communicating with the sight opening, one of said members having a groove, the other of said members being provided with an eXtension, said groove extending but partly across its respective member, said casing being mounted in said recess below the sight opening, and said extension being mounted in said groove, said casing having indications on one side of the casing secured to the stock, and the said fastening member securing the casing in place with the extension in the groove and leaving substantially the said graduations only, exposed.

3. A level having a casing, said casing being provided with an opening, an indicator yieldable for insertion through said opening, means to mount the indicator interiorly of the casing, and means to cause said indicator to seek the vertical.

4. A level having a casing provided with bearing means interiorly thereof, said casing being provided with an opening, an indicator insertible through said opening, means to cause said indicator to seek the vertical, said indicator having a plurality of relatively movable arms, and means on one of said arms to engage said bearing means.

5. A level having a casing, said casing being provided with an opening, an indicator insertible through said opening into the casing, means to cause said indicator to seek the' vertical, said indicator being yieldable for contraction while passing through the opening, andmeans to mount the indicator within the casing.

6. A level having a casing, an indicator within the casing having arms, said arms being relatively yieldable and provided with indicator members at their free ends, said casing being provided with indications with which said members register during use, each of said arms being provided with a bearing portion, means to mount the bearing portions on the casing, means to weight said arms, and means to connect the arms and mount the last mentioned means.

7 A level having a casing, said casing being provided with an opening, an indicator insertible through said opening having relatively movable arms, means to weight the arms at one end, bearing portions provided on the arms, said casing being provided with means to pivotally mount said bearing portions, and an indicator member being provided on one of said arms.

8. A level having a casing, said casing being provided with an openingand with ing portions spring for pivotal mounting, and one of saidfirst mentioned arms being provided with an indicator member to register with said indications.

In testimony whereof I affix my signature 15 in presence of two witnesses.l

GEORGE W. FOGELSONG. Witnesses:

OSCAR JoHANNEsEN, L. A. HARTUT.