US849155A - Gage. - Google Patents

Description

PATENTED APR. 2', 1907. A; MORRISON.

GAGE. APPLICATION FILEQAUG. 1; 1906.

UNITED STATES PATENT OFFICE.

GAGE.

Specification of Letters Patent.

ratented. April 2, 1907.

Application filed August 1,1906. Serial No. 328,798.

To all whom, it may concern:

Be it known that 1, ANDREW MORRISON, a citizen of the United States, residing at Coleman, in the county of Coleman and State of Texas, have invented new and useful Improvements in Gages, of which the following is a specification.

This invention relates to gages or measuring devices for the use of carpenters and other mechanics, the particular object of the invention being to provide a gage which may be usefully employed for the purpose of laying ofl' rafters of various dimensions without necessity for the calculations that are usually necessary in order to cut rafters at the desired angle, but which usually involve the use of the steel square, the trysquare, and the bevel.

A further object of the invention is to provide a gage or apparatus of this kind which may be conveniently clamped upon the timber that is being operated upon so that it will be held firmly in position while in use.

A further object of the invention is to provide an apparatus of the character described having a saw-guide so that the saw will be guided while the desired cut is being made.

Still further objects of the invention are to simplify and improve the construction and operation of this class of devices.

Vith these and other ends in view the invention consists in the improved construction, arrangement, and combination of parts, which will be hereinafter fully described, and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but

. that changes, alterations, and modifications within the scope of the invention may be made when desired.

In the drawings, Figure 1 is a top plan view of a gage constructed according. to the invention, a portion of the straight-edge having been broken off. Fig. 2 is a side view of that portion of the device having the straightedge. Fig. 3 is a vertical sectional view on the line 3 3, Fig. 1, showing the saw-guide in a raised position. Fig. 4 is a sectional detail view taken on the plane indicated by the lines 4 4 in Fig. 1.

Corresponding parts in the several figures 5 are denoted by like characters of reference.

The improved gage includes a base 1, hav

to engage one edge of the piece of timber,

the opposite edge of which is engaged by the flange 2, the latter and the spring-clamp 7 cooperating to secure the base 1 firmly upon the timber, as will be readily seen by reference to Fig. 4 of the drawings. It will be understood that the spring-clamp 7 will readily adapt itself to the timbers of diflerent thicknesses and that the resiliency of said spring enables the slide 4 to be moved to a position where one of the notches in said slide is firmly engaged by the pawl 6. A cross-piece 8, connecting the flanges 3, serves, in connection with the pawl 6, to prevent displacement of the slide 4. The base 1 is provided at one end with an obliquely-extending neck 9, which is reinforced by ribs 10 upon its upper side, said neck carrying a segment-plate 11, having on its upper side a segmental rib 12, Fig. 3, provided with a correspondiugly-segmental flange 13, which has been shown as being hollow or tubular, but which may be of any desired construction. Said flange serves to guide a sliding head 14, having a pivoted stop member 15, which is adapted to engage any one of the plurality of notches 16 in the flange 13 for the purpose of securing the head 14 in any position to which it may be adjusted.

Pivotally mounted upon the segmentplate 11, concentrically with the flanged rib 12, is a lug 17, with which is hingedly connected a gage-plate 18, having lugs 19 upon its upper side. A yoke 20 is hingedly connected with the lugs 19, and the side members of said yoke are connected to form a bar 21, that extends through an aperture in the head 14. Upon the latter is pivoted a pawl 22, adapted to engage any one of the plurality of notches in the yoke-bar 21. The gageplate 18 when raised to an upright position may thus be secured at various adjustments. Connected with the gage-plate is a reverselycurved arm or bar 24, provided at the edges thereof with strengthening-ribs 25, said arm constituting a saw-guide. Upon the gageplate there may be inscribed a table of measurements, as shown at 26, serving to guide in the use of the device.

The notches 16 in the flange 13 and the notch 23 in the yoke-bar 21 are formed in predetermined spaces and at predetermined intervals, so'that the gageplate may be secured when adjusted to various positions with relation to the base. It will be seen that by turning the lug 17 upon its pivot the hinged edge of the gage-plate may be adjusted at various angles with relation to the straight-edge of the base. By adjusting the gage-plate upon its hinge to a vertical position it will serve as a guide in trimming the timber upon which the device has been clamped at the desired angle. By adjusting the gage-plate at an inclination. it will serve as a guidein making a slanting cut, as will be readily understood.

This improved device is simple in construction and eflicient in operation, and it provides a device which will assist an unskilled person in accurately laying ofl and cutting rafters and similar timbers used in the construction of buildings.

Having thus described the inventiim, w hat is claimed is- 1. I11 a gage of the class described a base having a downturned flange and provided with transverse flanges on its upper side, a slide mounted between the latter flanges and having a spring-clamp at one end, and means for securing the slide at various adjustments.

2. In a gage of the class described a base having a downturned flange, a slide movable transversely upon the upper side of the base and having a springclamp at one end, a guide for said slide and means for securing the slide at various adjustments.

8. In a gage of the class described a base i havmg a downturned flange at one edge and 5 provided with upstanding transverse flanges, a notched slide movable between the latter and having a spring-clamp at one end, and a pawl pivoted between upstanding flanges and engaging the notched slide.

' 4. In a gage of the class described a base having an obliquely-extending neck carrying a segment-plate, a segmental flanged rib upon said plate, a sliding head engaging the flanged rib, a lug pivotally connected with the segment-plate, a gage-plate hingedly connected with the lug and means for adjustably connecting the gage-plate with the sliding head.

5. In a gage of the class described a base having an obliquely-extending neck carrying a segment-plate, a segmental flanged rib upon said plate, a sliding head engaging the flanged rib, means for securing the head at various adjustments upon the flanged rib, a lug pivotally connected with the segmentplate, a gage-plate hingedly connected with the lug and carrying a saw-guide, and means adjustably connecting the gage-plate with the sliding head.

6. In a gage of the class described a base having a downturned flange, adjustable clamping means cooperating with said flange to secure the base in position for operation, a segment-plate connected with the base by an obliquely-disposed neck, a gage-plate connected with the segment-plate for movement in various planes at right angles to one another, means for securing the gageplate in position at various adjustments, and a sawguide connected with the gage-plate.

In testimony whereof I afliX my signature in presence of two witnesses.

ANDREI/V MORRISON. itnesses:

J. W. VVOOD, '1. F. RoBB.

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