US1398183A - Adjustable straightedge plumb and level - Google Patents

Description

- nrre STATES ADJUSTABLE STBAIGHTEDGE PLUMB AND LEVEL.

Specification of Letters Patent.

Patented Nov. 22, 192

Application filed April 29, 1919. Serial No. 293,542.

To all whom it may concern:

Be it known that I, PHILIP T. FAGRIE, a citizen of the United States, residing at 2003'} 1st avenue, Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Adjustable Straightedge Plumbs and Levels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable other skilled in the art to which it appertains to make and use the same.

This invention relates to a plumb and level for use by artisans and particularly to such devices which are used in connection with a straight-edge used for ascertaining the line of a horizontal or perpendicular surface as to whether the same is true;

The objects of the invention being to provide a simple and efficient combination plumb and level which may be easily at tached to any ordinary straight-edge, and preferably of such form as to be adapted to a wooden strai ht-ed e in common use 2: O

by carpenters and masons for their construction work, the device to enable the user of the straight-edge to erect his work on the lines he may desire, either level or plumb, and also to provide means whereby the instrument may be attached to such forms of straight-edge of varying thickness.

With these and other objects, for illustration I have made the accompanying drawings, of which;

Figure l representsa side elevation of the device in place;

Fig. 2 shows an end view of the device, with part of straight-edge in section;

Like numerals on the figures show like parts of the structure.

1, represents a portion of any. ordinary wooden straight-edge, with the ends broken away, and 2 the hand opening out out, and into which my device is'affixed for use.

The device is held to the straight-edge by two wings or clamps 3 and 4, by means of a bolt 5 passing through the wood and through the clamps on each side thereof, the bolt having any suitable head and nut on either end thereof. Both ends of the clamp at their upper and outer ends are turned at angles and bent to form ears 10 and 10 for a hinge connection and through which connecting pins 7 and 8 are passed, being provided with slotted head for a screwdriver as shown in Fig. 2 and a threaded portion at its other end as shown in Fig. 1, which threads into corresponding thread cut in the appropriate ear 10. Corresponding ears 9, 9, are pro;

vided on the base of the horizontal'part'6v of the level case, and pin 7 is passed through the earsof 6 and 3 similar to a pin in a door butt, thereby providing a hinge jointfor the side clamps on each side of the part 6.

The part 6 is hollowed out and an ordinary spirit vial 11 is embedded in the customary manner with plaster Paris or. other similar retaining substance and a screw plug 12 is used'to positively close thedoor over the vial, but the plug may be removed when necessary to renew the vial in case of accidental breakage, the vial being so filled with spirits or other fluid to leave the ordinary bubble 13, to enable the operator to determine the level of the sur. face upon which the device may be placed At one end of thebase 6 and rising at right angles thereto is provided a casing 14 into which is embedded a vial 15 in similar manner and in form as the other in base 6, with bubble 16, and a screw plug 17. Extending slightly beyond the upright casing 14 the base provides a footing and a similar footing at the other end of 6, through which footings are holes threaded for set screws 20, 20, provided with thumb nut heads 18, 18, and button bases 19, 19 which latter rest normally against thesurface of the lower portion of the hand hole in the straight-edge, and the operator to adjust the device so that the bubble in 11 in horizontal position is central when the straight-edge is horizontal, simply turns the screws 20, 20 up or down respectively to bring the level true.

The bubble 16 will also be in the center when the straighhedge is placed against a vertical face; the pin bolt 5 thus serving as a pivot to permit the true adjusting of the device in place.

The offset ears 10, 10 on the clamps 3 and 4 vary on each side and are greater on the first or 8. Fig. 2 shows the clamps with the ears of each turned outward in dark lines, also dotted linesir" and 1, and when in the shaded positions last described they will embrace a thicker straight-edge than in the positions shown in dark lines as 3 and 4. Other adjustments may be readily made by turning the ears of one side out in conjunction while the ears of the opposite clamp turn inward, which would furnish a space for a thickness of straight-edge between the dark lines and the shaded or dotted lines, and the varying offsetof the two sides may be utilized for varying the space as desired, the intention being that these devices may be adapted in the trade for attachment to varying thicknesses of straight-edges in use.

What I claim is:

1. The combination with a straight-edge, of clamping plates arranged upon opposite sides of the straight-edge, means for detachably connecting the plates to the straight-edge, said plates having outstandiIlg perforated ears formed thereon at the upper edges 01 said plates and an angular vial holder arranged above the upper edges of the plates and having perforated ears carried thereby and adapted to be disposed in alinement with the ears of the plates and removable ivot pins extending through the ears of both the plates and vial holder. 2. The combination with a straight-edge, of clamping plates in position upon the straight-edge, having outstanding perforated ears formed at their upper edges, the ears of one of said plates being projected farther beyond the side wall of the plate than the ears on the other plate, a vial holder arranged above the plate, having perforated ears adapted to be disposed in alinement with the ears on the plate and a movable pivot bolt arranged within said a ears of both the plate and the vial holder and means for adjusting the vial holder to conform with the face of the straight-edge.

3. The combination with a straight-edge, of clamping plates disposed upon opposite sides oi the straight-edge, having perforated ears formed upon their longitudinal edges, the ears on one plate extending outwardly farther than the ears on the other plate, a vial holder, means for hingedly connecting the vial holder with the plates and the outstanding ears on said plates being adapted for arrangement with respect to the vial holder, whereby the plates can be clamped to traight-edges oi different thicknesses.

l. The combination with a straight-edge, clamping plates secured thereto, having perforated ears formed on one edge, the ears onone of said plates extending farther beyond the face of the plate than the ears on the other plate, a vial holderdisposed adjacent the longitudinal edges of said plates, means forming connection between the vial holder and the ears on th plates, said connections being detachable, whereby the plates can be arranged for clamping engagement with straight-edges of different thicknesses.

In testimony whereof I my signature.

PHILIP T. FAGRIE.

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