US208104A - Improvement in glaziers square and rule - Google Patents

Description

UNIT STATES PATENT OFFICE.

JOSEPH M. KURTZ, OF WESTON, MISSOURI.

'IMPROVEMENT'IN GLAZIERS SQUARE RULE.

Specification forming part of Letters Patent No. 208,104, dated September 17, 1878; application filed August '2, 1878.

To all whom it may concern:

Be it known that I, J OSEPH M. KURTZ, of Weston, in the county of Platte and State of Missouri, have invented a new and Improved Glaziers Square and Rule, of which the following is a specification:

The object of my invention is to furnish a square for use in cutting window and picture glass to any desired size, which square shall be compact in form and capable of extension, and shall have a movable guide and stop for the edge of the glass, to prevent it from slip- Myinvention consists in a rule having inches and parts of inches marked upon it, and provided with an arm. at a right angle, to form a square. The rule or base has an extensionslide at one end, which may be clamped in position, and it is also provided with a movable guide, which may be clamped at any point on the rule, and forms a stop for the glass, while the arm of the square serves as a straight edge along which the cut is made.

In the drawing, Figure 1 is a plan view of my improved square, as laid upon a pane of glass and set for cutting the same eight inches wide, the glass being shown in dotted lines. Fig. 2 is an edge view of the square, and Fig. 3 is a side view of the guide and stop.

Similar letters of reference indicate corresponding parts.

The square is to be made of wood or metal. It consists of a rule or base, a, and a rightangled arm, b, extending from one end. The arm bis of thinner material than the rule a, and is mortised into the rule to permit the edge of a to come squarely against the glass when the arm I) is laid on the same.

Upon one side of the rule ainches and parts of inches are marked in permanent lines, and numbered from 1 upward, commencing next to the arm 12. The first inch is a full sixteenth short, to allow for the cutting-diamond, which cuts that distance outside of the straight edge.

e is an extension-slide that fits into a longitudinal mortise in rule a, at the end opposite to the arm I), and may be slid easily in and out of the mortise. It is provided with a head,

0, corresponding with a in thickness, and cont ing flush with the same at the edges.

f is a narrow plate on the end of head '6,

and projecting slightly at the edges of the head.

The surface of slide 0 is marked in inches similar to the rule (1-, commencing, next to head 6, with the number next above the last one on the rule.

9 is a serrated metal plate secured upon one edge of slide 0. h is a spring secured in a mortise in the edge of rule to adjacent to the serrated edge g, and having its free end serrated on the side toward g. i is a cam-lever pivoted in the said mortise, in such position that when it is turned down flush with rule a the cam of iwill bind the spring -h against the serrated edge g, and hold the slide a firmly.

By raising the lever t the spring is relieved, and the slide can be adjusted.

7a is the guide, which is adapted for application to the rule a or to the head 0 of the slide. It consists of a plate with flanged ends to fit over the edges of the rule a, and it is clamped to the rule by a thumb-screw, l, 'in' the flange which comes upon the outer edge of rulea, and which screw lbinds a spring, m, against the edge of the rule. It may also be clamped to the head e in a similar manner.

a is a stop projecting from guide 7s, at the inner edge of rule a. This stop may be formed with or attached to k.

If the glass is to be cutfour inches, the guide It will be clamped at the four-inch mark on a. The square is then to be laid on the glass, with the edge of rule a against one edge of the glass, and the stop it against the adjacent edge of the glass. The outer edge of arm I) will then serve as the line to cut by.

When the glass is to be cut of a length that requires the use of the slide, the latter is to be drawn out and clamped, and the guide 7; secured upon head 0, as seen in Fig.v 1. In this case the end of the rule a will be the guide for the number of inches, the guide 70 and stop a serving only as a stop for the end of the glass. Guide k is just the width of the head e, and when placed against the projecting ends of plate f, and clamped, stop n comes to the proper place for the edge of the glass.

7 Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The herein-described glaziers rule, provided with an adjustable notated slide and a guide, h k l m, secured on head e, against projecting ends of plate f, said guide having a stop, n, as and for the purpose specified.

2. The combination, with slide a, of the serrated plate g, end-serrated spring h, and the cam-lever 17, as and for the purpose set forth.

JOSEPH M. KURTZ.

Witnesses:

LOUIS P. ILKENHAUS,

MARKUS EGGERT.

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