US1791221A

US1791221A - Miter-cut finder

Info

Publication number: US1791221A
Application number: US333850A
Authority: US
Inventors: Murray William
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-01-21
Filing date: 1929-01-21
Publication date: 1931-02-03
Anticipated expiration: 1948-02-03

Description

Feb. 3, 1931.

' w. URRAY MITER CUT FINDER Filed Jan. 21. 1929 mL/fl/W M49541! By Attorney Patented Feb. 3, 1931 J I UNITED E P TENT?foFF lcE; J

WILLIAM MURRAY, or ASTORIA,.LONG ISLAND, NEW Yon]:

MITER-CUT rinnna' Application filed J'anuary 21 1929. Serial J.fIo. 33-3,850

This invention relates to new'and useful improvements in miter cut finders or what are frequently known as miter or bevelled gauges. he primary object of this invention resides in the provision of an instrument of this character that includes generally a main stock or handle having pivotally assoiated with one end thcreof'a pair of swing ing arms or blades, the said blades being operativcly associated so as to operate in unison, said association consisting 0t intermeshing gears which gears are protected'by housings formed within the main stock or handle.

Further, an ob ect of the invention is to construct said stock or handle from a pair oi sections,each of which is so formed as to provide a stock or handle capable of entirely receiving the swinging blades when the gauge is not in use in crner that it may be conveniently carried in the pocket, and without presenting to the pocket any rough edges or protruding points. 7

Furthermore, the structure of the gauge bled for cleaning, repair or renewal purposes.

With the foregoing and other objects in view as the nature of the invention will be better understood from the following specifi- 39 cation and accompanying drawing, wherein: F igure 1 is a plan view of my improved miter cut finder, the swinging blades or arms shown in full and dotted line positions.

Figure 2 is a fragmentary longitudinal transverse section through the gauge, the said bladesor arms being in entirely closed posi-' tion.

-Figure 8 is an innerface perspectiveof one of the sections of the main stock or handle, and

Figures 4, 5 and 6 are detailed sections taken substantially upon the lines 4-4, 5 5 and 66 of Figure 2.

Now, having particular referenceto the drawing, my miter cut finder consists of the three general units of a gauge of this char act-er, that is, the main stock or handle A-and the pair of swinging blades or arms B'B. The said stock orhandle is of predetermined length, width and thickness, andin this in- 1 the channels.

screws, 9" may be provided to rigidly inter r is such as to enable it to be entirely disassemto facilitate the pivotalarrangement' of the blades withinthe stock or handle by suit- Rable pivot pins.1212. One end of these stance, is composed of a pair of mating sec-j tions 55. The opposed faces or these sections at opposite edges ofthe stock or handle are formed with blade receiving channels 66 that extend to the upper end of the sec tions-andthat terminate inspaced relation with the lower ends of the sections as clearly connect the sections of the stock or handle.

3 The upper end of each section 5 is'formed at its inner face and directly adjacent its respectivechannel 6 with a rounded gear pocket 10 that opens into the said channel,

as clearly illustrated in Figure 3. The stock attached end ofeach blade Bis rounded." Fixedto theinner faces of these blades by welding or the like, and freely rotatable Within their respective gear pockets 10 are; small gears 1111, the same having inter meshing engagement with/each other as clearly disclosed in F ignres 2 and. 4. These gears are formed centrally with openings that register with openings in the blades pinsfproj'ects slightly beyond the'stock or handle and is. equipped with a, suitable rounded head 13 to facilitate the swinging of its associated blade as well as the rotation of the gear carried by said blade, and

obviously by reason of the intermesh-ing gears a turning of the head in opposite di-, rections will bring about the simultaneous; inward orv outward swinging of the blades As disclosed by the full and dotted line positions of the blades as in Figure 1, it will be understood that the blades may be swung an to any required. angle.

In view of the foregoing description when considered in conjunction with the accompanying drawing, it will be apparent that I have provided a novel, simple and useful miter cut finder wherein the pivoted'ends of the blades are interconnected by a pair of gears, which gears are entire enclosed within the main stock or handle, so that they will be protected from dirt, dust or other matter that would prevent the proper swinging 01 the blades into or out of the stock channels.

Even though I have herein shown and de scribed the invention as consisting of certain detailed structural elements, it is nevertheless to be understood that some changes may be made therein wlthout alieeting the spirit and scope of the appended claims.

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

1. In a miter cut finder, a stock or handle consisting of a pair of mating halt sections in face to face engagement, each section being provided at its inner face with a longitudinal blade receiving channel, the channels of the sections being at opposite longitudinal edges of the stock, each section being provided at its inner being further formed at its inner face and at one end of its respective channel with a gear pocket open to the channel only, two blades pivoted to said stock, a gear attached at one end of one blade, asecond gear at' tached to the adjacent end of the other blade and meshing with said first gear, substantially as and for the purpose specified.

2. In a miter cut finder, a stock or handle consisting of a pair of mating half sections in iiace to face engagement, each section face with a longitudinal blade receiving channel, the channels of the sections being at opposite longitudinal edges of thestock, each section being further formed at its inner face and at one end of its respective channel with a gear pocket open to the channel only, two blades pivoted to said stock, a gear attached at one end of one blade, second attached at the adjacent end of the other blade and meshing with the first gear, and manipulative means associated with one of the blades whereby to cause the simultaneonsjrotation of the meshing gears and the swinging 01"- the blades. c

In testimony whereof I am): my signature. WILLIAM