US65631A - Improvement in combination squares - Google Patents

Description

D.- A. B. BAILEY.

Combination Square.

Patented June 11, 1867.

No. 65,631. x

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D. A. B. B-AlLEY, OF ST. JOHNSBURY, VE'RMONT.

Lettcm Patent No. 65,631, dated June 11,1867.

IMPROVEMENT IN COMBINATION SQUARES.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, D. A. B. BAILEY, of St. Johnshury, in the county of Caledonia, and State of Vermont, have invented a new and useful Improvement in Combination Square; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings forming part of this specification.

My invention consistsin attaching to the ordinary steel square a triangular-shaped frame, made toslide upon the square, and to which is attached by a hinge at one end an adjustable face for the square in such a manner that it is made to rest upon the squareat any desired angle; and also in the combination of parts, whereby they are made to serve many useful purposes, as will be hereinafter described.

Figure 1 represents a side view of the square and parts attached.

Figure 2 is a'section through the line :0 z, fig. 1.

Figure 3 is a section through the line y y of fig.

Figure 4 is a view of the back side, with a portion of the sliding-frame cut away to show the square.

Similar letters of reference indicatelike parts.

A represents thesquare. B is the sliding-frame, triangular in shape, with two of the sides ofthe triangle cut away on the top at a; the lower portion is seen in dotted lines. In the shoulders of the part cut away there are slots, as seen at b 6, through which the square passes. C is a set-screw, which holds the frame in any desired position on the square. The partB of the triangle stands always at a right angle with the square. l) is the face which is hinged to the frame or top of B at d. E is a sliding-circle, attached to D. The centre of the circle is thejoint 0?. f is a set-screw, attached to B, whose hcad bears upon the circle and holds it in any desired position. As the face D stands, as seen in the drawing, it forms a trying-square, or stands at right angles with A. When it is thrown out, as seen in red lines, it forms, with the square, 21. bevel, which may be adjusted to any desired angle, and held by the set-screwf. g g are points, one of which is attachedto.v

the face D, and the other to the angle of the frame B. They turn on set-screws h h, and fold up when not in use, as seenat h. These points-form compasses. Theset-screwshold them fastwhen they are used, and also when they are folded. The face-piece D has a long slot through which the square passes. This slot is seen in. fig. 3 at J, with'the square in the upper portion. This long slot is necessary to allow the face to be adjusted to any desired angle on the square. The various uses to which this combination is adapted will readily suggestthemselves to mechanics.

' Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The frame B B, the face pieces'D, the circle and the points gg, the whole constructed, arranged, and held in position substantially as herein shown and described, in combination with the square for the purposes set forth. I

D. A. B. BAILEY.

Witnesses:

W. N. RANDALL, SIAS RANDALL, 2d.

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