US2154625A

US2154625A - Apparatus for repairing and correcting levels

Info

Publication number: US2154625A
Application number: US173919A
Authority: US
Inventors: Henry J Kleineschay
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-11-10
Filing date: 1937-11-10
Publication date: 1939-04-18
Anticipated expiration: 1956-04-18

Description

April 1939. H. J. KLEINESCHAY 2,154,625

ARA US FOR REPAIRING AND CORRECTING LEVELS Filed Nov. 10, 1937 li y- {/1 56 ff K15111555 Patented Apr. 18, 1939 UNITED STATES APPARATUS FOR REPAIRING AND- CORRECTING LEVELS Henry J. Kleineschay, Fond du Lac, Wis. Application November 10, 1937, Serial No. 173,919

3 Claims.

This invention relates to a method of and apparatus for checking and repairing levels, straight edges and the like.

An important object of this invention is to provide a simple method and apparatus for supporting a level or straight edge on an adjustable support which has already been corrected by suitable means to conform to an imaginary line so that the gauge'to be corrected may be mounted thereon and corrected to conform thereto.

Another object of this invention is to provide improved means for supporting a plumb by which the apparatus may be trued.

Other objects and advantages of the invention will hereinafter become more fully apparent from the following specification of which the drawing forms a part, and wherein:

Figure 1 is a front elevational view of the invention,

Figure 2 is a side elevational view in fragment of the same,

Figure 3 is a front elevational view of the device mounted vertically,

Figure 4 is an enlarged vertical sectional View showing one unit of the invention,

Figure 5 is a horizontal sectional view on line 5-5 of Figure 4,

Figure 6 shows a clip to support a plumb for alining the apparatus, and

Figure 7 is an enlarged perspective view of the clip.

Referring more particularly to the drawing wherein like reference characters designate like or corresponding parts throughout, l designates generally a bench or other supporting surface on which is mounted the two units II of the level checking apparatus.

Units II, which are identical, each comprise a threaded bolt I2 having at one end fastening means l3 preferably in the form of a wood screw and in its opposite end a kerf or slot I4 by which the fastening means I 3 may be secured in the top of bench Ill.

Mounted on bolt I2 is a locking nut I and a sleeve type adjustable nut l6 provided at one end with a head IT. A bracket or yoke I8 is provided with the portions I9 and 20. Portion I9 as seen in Figure 5 is provided with a slot 2I to receive bolt I2. Bracket I8 is mounted on bolt I2 with portion I9 clamped between locking nut I5 and the adjusting nut I6.

The bracket I8 extends upwardly and has a threaded opening 22 in portion 20, which portion is above and in substantially the same vertical plane as portion I3 when bracket I8 is mounted lower unit II' on bolt I2. Mounted in opening 22 is a threaded clamping member 23 having at one end a knurled head 24 by which member 23 can be adjusted; and at its opposite end a reduced headed shank 25 on which is swivelly mounted'a collar 26 having a depending annular flange.

The periphery of the adjusting nut I6 is knurled so that either or both of these nuts I6 can be adjusted to a predetermined imaginary line determined by a level 21 having a spirit vial 28. After nuts I6 have been adjusted, the nuts I5 are moved up to clamp nuts I6 in adjusted position. Another level 21 can then be positioned on heads I! after which the clamping members 23 can be brought into clamping engagement with the upper edge of the level 21 to hold it in position while being checked or repaired so that the vials 28 of the levels 21 will correspond.

In Figure 3 the units II are shown mounted in vertical relationship for the purpose of testing and correcting the vials 29 mounted in openings 30 in level 21 and at right angles to vial 28. The nuts I 6 are adjusted in the same manner as heretofore explained by means of an accurate level 21 after which the vials 29 of other levels 27 may be clamped in position for checking and repairing.

In Figure 6 the units II' and nuts I5 and I6 are mounted as in Figure 3 for testing and correcting straight edges. In this case a plumb support 3I comprising a spring clip 32, is frictionally clamped to the upper nut I 6, and is provided with a reduced shank 33 which is offset upwardly from clip 32 and which is provided with a slot 34 at its free end to receive and hold the line 35 of a plumb 36. The clip 32 is positioned so that line 35 will touch the tip of head I 'I of the upper unit II' after which the is adjusted and locked so that line 35 will be likewise touching the lower nut I6 at its tip II. The units II are then ready for testing and repairing straight edges.

From the foregoing it will be seen that an apparatus has been provided by which an improved method may be employed for testing and repairing levels and straight edges which will simplify the operation and always insure accuracy in the testing.

It is to be understood that the apparatus as shown is only intended to illustrate a preferred embodiment, various changes may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed. Furthermore, it is to be understood that other means may be used to carry out the method without comprising bolt I2 departing from the spirit and scope of the invention.

I claim as my invention:

1. In a device of the class described, a screw having a reduced threaded shank at one end adapted to engage a support, an internally threaded adjustable member mounted on said screw, a nut positioned beneath said member to retain it in adjusted position, a yoke projecting upwardlyfrom said screw and having a slotted inturned end engaging the screw and clamped thereto by said adjustable member and nut, the opposite end of said yoke being bent parallel to its other end and provided with a threaded opening, and a set screw mounted in said opening'to clamp one end of a level between said set screw and adjustable member.

2. In a device for correcting and repairing levels, a supporting member having a threaded shank, a nut mounted on said shank,-a socket nut mounted on said shank above said first mentioned nut, an arm having its oppositeends bent to 'form parallelfflanges disposed atright angles adapted to be secured to a suitable support, a

socket nut adjustably positioned on the upper end of said screw, a bracket, means cooperating with said socket nut to clamp and support said bracket, a set screw adjustably mounted in the opposite end of said bracket in a plane with said socket nut to cooperate therewith in retaining one end of a spirit level in said device, said socket nut adapted to be adjusted to align the ends of the level.

HENRY J. KLEINESCHAY.