US1023550A - Crosscut-saw gage. - Google Patents

Description

Patented Apr. 16, 1912.

Witnesses Aftorneys OOLUMIUA PIANOORAPH 60., WASHINGTON, n. c,

GEORGE A. COLVIN, OF OOQ'UILLE, OREGON.

CROSSCUT-SAW GAGE.

Specification of Letters Patent.

Patented Apr. 16, 1912.

Application filed July 18, 1911. Serial No. 639,218.

To all whom it may concern:

Be it known that I, GEORGE A. OOLVIN, a citizen of the United States, residing at Ooquille, in the county of Coos and State of Oregon, have invented a new and useful Orosscut-Saw Gage, of which the following is a specification.

This invention relates to saw gages, and particularly to cross cut saw gages.

The objects of this invention are to provide a novel saw gage which can be utilized to trim the teeth of a saw, and which is reversible in character.

Another object is to provide means for reflecting the tooth being trimmed in order that the operator may correctly trim the tooth without stooping, as is customary with present gages of this character.

Further objects will be evident from the hereinafter description.

The invention is illustrated in the accompanying drawings, in which similar reference characters indicate similar parts, and in which- Figure 1 is a face view of the gage; Fig. 2 is a top view thereof; Fig. 3 is a bottom view thereof; Fig. 4 is a central cross section thereof; and Fig. 5 is a perspective of the background.

Referring specifically to the drawings, 6

indicates a skeleton frame having laterally projecting arms 6 at each side thereof, the outer ends of which are arranged in the form of suitable arcs. Arranged centrally and longitudinally of the frame 6 are ribs or abutments 11 and 12. on the respective faces thereof. This frame 6 has central openings 9 and 10 in the sides thereof and to the ends of the arms 6 on each side of the openings 9 and 10 respectively are ar ranged flanges or strips 7 and 8, which are preferably formed of sheet steel or the like. The flanges 7 and 8 are secured to the ends of the arms 6 by screws 13, which allow for the adjustment of the flanges 7 to various arcs to accommodate various saws. On one side the edge of the flanges 7 lie in the vertical plane of the edges or outer faces of the ribs 12 and the other or longer sides of the flanges 7 project beyond the vertical plane of the edges of the ribs 11 on the other side of the frame. The position of the flanges 8 is reversed, that is, the shorter side thereof has its edge in the vertical plane of the ends of the ribs 11, while the other or longer sides project beyond the ribs 12.

A bridge 19 is secured between the inner ends of the flanges 7 over the opening 9. This bridge bears a gage screw 20 provided with a lock nut 20*, which screw can be adjusted to and from the opening 9 in accordance with the shape or level of the tooth to be trimmed, to serve as a means of gaging the same. This screw 20 is arranged on the longer sides of the flanges 7 and is-in the vertical plane of the edges of the ribs 12 and the shorter side of the flanges 8. Between the inner ends of the flanges 8 and on the inner faces of the longer sides thereof is arranged a plate 21 having an elongated longitudinally arranged slot 23 therein, which lies in the vertical plane of the ribs 12. This plate is adjustably secured to the flanges 8 by screws 22.

To one side of the frame and at the inner end of the opening 9 is hinged or pivoted at 141 a reflector frame 15 which carries a reflector or mirror 16 on the inner side thereof and is adapted to swing to and from the said opening. This reflector frame is supported in a diagonal position over the opening 9 by the stop 15 at the lower end thereof resting against the face of the frame. On the other side of the frame 6 is arranged a frame 17 carrying a white field or background 19 on the inner face thereof. This frame has projecting fingers 18 which pass through transverse holes in the bridge 19 to removably support the background away from the opening 9, the background being adjustable to and from the said opening.

In use, the gage is placed over the saw teeth which are to be trimmed, the ribs 11 and flanges 8 abutting against the sides of the saw and the flanges 7 resting on the teeth; thus the raker tooth can be brought into the opening 9, and by means of suitable implements can be trimmed and repaired, as desired, the gage screw 20 indicating the proper length and level of the tooth. The operator stands on the opposite side of the saw to which the gage is applied and by looking into the reflector or mirror, the tooth is readily seen, thus permitting the operator to trim the tooth while standing over the gage, it not being necessary to stoop over to see the tooth in under the bridge 19. The white background serves to form a con trast to bring out the shape and contour of the tooth which is reflected. This gage can then be run over the teeth to level the same and make them true. Then, by folding the reflector frame inward against the face of the frame, the gage may be reversed to bring the raker tooth Within the slot 23 for squaring or other operation.

Having described my invention, What I claim as new is:

1. In a saw gage, a frame having an opening in one side thereof, flanges secured to the frame at the sides of the opening, a bridge attached to the inner ends of the said flanges and having transverse holes therein, a gage screw carried by the bridge, a reflector hinged to one side of the frame at the inner end of the said opening and having a stop to normally hold the reflector diagonally over the opening, the reflector being foldable against the frame, and a background on the opposite side of the said opening and sWingable to and from the said opening, and a removable background monnted on the other side of the frame and adjustable to and from the said opening.

In testimony that I claim the foregoing as my own, I have hereto afliXed my signature in the presence of tWo Witnesses.

GEORGE A. GOLVIN. Vitnesses ROBERT H. ARMSTRONG, JoHNnY R. Sworronn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

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