US1547969A - Level - Google Patents

Description

Cil

Patented July 28, 1925.

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Application filed January 29, 1924. Serial No. 689,279.

To all whom t may conce/m.'

Be it known that I, JAMES W. SLADE, a citizen of the United States, residing at Poplarville, in the county of Pearl River, State of Mississippi, have invented certain new and useful Improvements in Levels; and` I do hereby declare the following to be a full, clear, and exact description 'of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in leveling devices.

One object of the invention is to provide a simple device of this character which is accurate in its operation, and which can be manufactured at a low cost.

Another object is to provide a device of this character which is capable of being used as a means for ascertaining when a surface is level, and for ascertaining the plumb of a wall, or other upright structure.

Another object is to provide a device of this character which is capable of being read from different points.

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawing.

In the drawing: Figure 1 is a side elevation of a leveling device made in accordance with the invention, and when used on a horizontal or approximately horizontal surface.

Figure 2 is an elevation of the device when used for obtaining the plumb of a vertical structure.

Figure 3 is a vertical longitudinal central sectionalview through the device.

Figure 4 is a vertical transverse sectional view on the line 4-'-4 of Figure 1.V

Referring particularly to the accompanying drawing, 10 represents a bar of suitable dimensions, formed of a single piece of wood, metal, or other material, having a transverse opening 11 cut therethrough, intermediate its length, and with a comparatively thin web 12 extending longitudinally of the bar, and across the upper portion of the opening. Disposed within the opening 11, and secured to and covering the entire length and width of the curved wall of the opening, is a metal strip 13, having transverse marks indicating degrees. The opening is slightly more than a semicircle, and having tlie 90 marks at di'ametrically opposite points on the strip 13, at the proper distance below the web 12. Formed integrally with the web 12, and depending centrally from the lower face thereof, into the opening 11, is a transverse rib or lug 14, and formed vertically through this lug, and out through the upper face of the web, are thetwo openings 15.k Disposed through these openings 15 are two ,shortl lengths of cord, wire, or other like flexible material, knots 16 being formed on their upper ends, above the web, to prevent escape therethrough, while the lower ends depend from the ylower face of the lug 14 and are secured withinV oblique openings 17, formed in the upper larger end of a triangular prismatic block 18. Within trie outer ends of these openings 17 are disposed removable screws 19, for releasably holding the cord ends. The smaller or apex endof the block 18 is arranged to traverse the markings of the plate or strip 13, to indicate the degree of inclination at which the device may be placed.

When the device is placed on its end, or with one of its longer edges against an upright structure, to ascertain whetherfor not the structure is plumb, the block will swing within the opening 11 until its apex is at or near the 90O marks, located. at the opposite sides of the upper end of the opening. At the center of the bottom of the mark is designated OO, the degree marks extending toward the right and left, to the ends of the opening, with degrees between 0 and 90. Thus the device is adapted for use in either direction, for ascertaining inclinations, and for use with either end uppermost, to ascertain the plumb of a structure.

Vhen the cords or wires wear out, or break, the screws 19 are removed, thus permitting the broken cords to be withdrawn upwardly through the openings in the web 12, and the easy substitution of new cords or wires.

lVhile I have stated that the strip 13 is formed from metal, I wish it understood that the same may be formed from celluloid, ivory, or other suitable material.

What is claimed is:

A level device lincluding an elongated body having a transverse semicrcular opening therethrough, a web extending across the upper portion of the opening and having a transverse depending lug thereon, said lug and Web having Vertical openings therethrough, a depending Weighted indicator having oblique openings extending through the opposite sides thereof and terminating in the upper and side faces of the indicator, and flexible suspending elements each having one end secured Within one of the said vertical openings and the other end secured Within one of the oblique openings in said indicator.

In testimony whereof, I aiTiX my signature, in the presence of two Witnesses.

JAMES W. SLADE. Vitnesses LEILAS T. SIMPSON, RUSSELL R. SMITH.

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