US1366878A - Adjustable square and bevel - Google Patents

Description

B.F .CURRY. ADJUSTABLE SQUARE AND BEVEL. APPLICATION FILED 061113. 19l9.

1,366,878. I Patented Jan. 25,1921.

2 SHEETS-SHEET I.

B. F. CURRY.

ADJUSTABLE SQUARE AND BEVEL.

APPLXCATION FILED OCT-13. I919.

Jw. A 1

m z w UNITED STATES BENJAMIN F. CURRY; OF POMONA, CALIFORNIA.

ADJUSTABLE SQUARE AIl'D BEVEL.

Specification of Letters Patent.

Patented Jan. 25, 1921.

Application filed October 13', 1919. seriainaeaoas's.

To all who 12bit may concern:

Be it known that I, BENJAMIN F. CURRY, a citizen of the United States, residing at Pomona, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Adjustables Squares and Bevels; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to adjustable angle measuring tools, and more particularly to an improved adjustable square and bevel.

One object of this invention is to provide an. improved device of this character which has broad working faces or planes which are adjustable to any desired angle with relation. to one another so that the tool is especially useful in connection with a miter box so as to enable the user to quickly and easily lay out and saw or cut a strip of molding at any angle desired.

A, further object is to provide an improved tool of this character which is ex.- ccedingly strong, rigid, durable, convenient and accurate, and which may be manufao turcd at a comparatively low cost.

Other objects and advantages may be come apparent to persons who read the following details of description in connection with the accompanying drawings in which:

Figure 1 is a top plan view of my improved tool in connection with a miterbox.

Fig. 2 is atop plan view of the device showing the same in another relation to the miter box for; laying out a different angle without changing the angle of the miter box or of the angle measuring tool. Fig. 3 shows the device in closed position. j

Fig. 4 is a sectional view along the line i e of Fig. 1. a

Fig. 5 is a sectional view along the line 5 5 of Fig. 4.

Fig. 6 is a sectional view along the line 6-45 of Fig. 5. j Fig. 7 isa perspective view illustrating one of the main'bars which are pivotally coimected'together to produce the diiferent angles. j

Fig. 8 is a top plan view illustrating the device somewhat modified by the use of an attachment or the exchange of links.

Referring to these drawings in detail, in which similar reference characters correing in threaded engagement with the end of the link 6 which interlaps with the link 7, thls screw extending through the contiguous end ofthe link 7, but not being in threaded engagement therewith so that this screwserves as a pivot which connects the links 6 and 7 to one another and to the bar 3. This thumb-screw 9 also extends through a slot 10 which extends through one of the two walls between which a channel is formed in the side opposite to the working face 11, it being understood that each of the bars 3 and 4. is thus formed with a channel on one side and a working face 11 onthc opposite side. The enascr the links 6 and 7 extend into these channels, so that the heads oi the screws 9 bind against the outer surfaces of the channel wallsand secure the links 6 and 7 in different ad-- j usted positions. In this connection it should be understoodthat while one of the screws 9 is adjustable along a slot 10, the other screw is adjustable alonga slot 12 of the bar Al. One end of thehalr 6 is cured by a fixed pivot or screw 13 to this bar 4".- From the toregoing description, it will be seen that the device is susceptible of an infinite number of very accurate adj ustments. However, the range of adjustment is somewhat limited, as this particular lorm of the device is intended principally for use in connection with miter boxes and its range is not required to be great because it is intended for use as a compleinental device in connection with the 15 degree angle of the miter box, although. it

may be used in connection with the other angles of the miter box. In this c nnection attention might be directed to the fact that ordinary known adjustable miter bo:.es are usually limited to a tow angles most generally in use. such as degrees, degrees, etc., and therefore, if the strip 2 i is placed parallel with the sides of the water 2, and sawed or cut at the 45 degree plane or the miter box, the 15 degrees is added to the 45 degrees so that the angle 2" is 60 degrees to the long edge of the strip 2. Obviously, by adjusting the device to different angles the angles 2 and 2 will be changed accordingly.

In orderthat this device may be useful as v a square and may also be used to lay out angles greater than 15 degrees. an attachment is provided for use in lieuoi the links 6' and 7 This attachment is illust 'ated at 1d in Fig. 8, the same being a link which is longer-than the linksG and 7. By removing the links 6 and? and attaching the link ll toth'e thumb-screws 9 and 13,115; shown in full lines in Fig. 8, then opening the cevice until the thumb-screw 9 reaches the end of the slot 10 nearest .the pivot 5, this stops the device in the position for forming a- ,right angle or square. By attaching the pivot or screw 13 to the bar a through an aperture 4? and pivotally connecting the link 14 thereto, asshown in full lines in 'Fig. 8.

the bar 4 may be swung into alinelnent with the bar 3 (as illustrated in dotted lines) or to any intermediate position Although I have described this embodiment of my invention very specifically, it is not intended to limit the invention to these exact details of construction and arrangement, but changes may be made within the scope of the inventive ideas as implied and claimed.

lVhat Iclaim as my invention is:

1'. A combination square and bevel comprising arms pivotally connected, links .pivotally connected With each other and slidably connected with one of said bars, one of the links being pivotally connected with the second bar and the second link pivotally and slidably connected with the second bar.

2. The combination of a bar having a slot extending therealong, a second bar having one end pivotally connected t the lirsl bar and having a slot extending therealong. a thumb-screw extending through the slot of the first bar, a pair of links, each link having one end interlapped with one end of the other link and pivotally connected together by said thumb screw, one of said links being pivotally secured to the second bar, and a screw extending through the slot of said second bar and engaged with the other link of said pair. said screws being effective to secure said links in different adjustments along said slots and therel'iy cure said bars at different angles.

3. In an adjustable tool oi the character described, a pair of bars hinged to one another and each having a plane broad working surface and a channel extending therealong on the side opposite to said work ing sur race, one oi said bars having a. wall oi the channel formed with a longitinlinally extending slot, :1 link having one end in the channel of the longitudinally slotted bar. a thumb screw threaded insaid end of the link and having a head to engage with the slotted wall for securing this endoi the link in different adjusted positions, the other end of the link extending into the channel of the other bar and. being pivotally connected to'this bar, a second link. and a second thumb-screw, said second link having one end interlapped with the first said link and pirotally secured thereto by the first said thumb-screw, the other end of the. said second link being adjustably secured to the bar which is pivotally connected to the bar having said longitudinally extending slot therein.

In testimony whereof I have hereunto set my hand.

BENJAMIN F. CURRY.

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