US1615013A - Takedown square - Google Patents

Description

Jan. l8-, 1927. 1,615,013

F. l. KIMBALL 4TAKEDOWN SQUARE Filed July 2l 192] i' I n w W@ lllllll.

gvwmtoc Patented Jan. 18, 1927.

UNITED STA-Tas P ATE 'l OFFICE.

FRANK I. KIMBALL, OF NEW HAVEN, CONNECTICUT, ASSLGNR TO SARGENTEI, CQIVI# PANY, OF NEW HAVEN, CONNECTICUT.

TAKEDOWN SQUARE.

Application led July; 21, 19215 My inventionrelates to carpenters squares and, more particularly, to the types of the course obvious that a square which must have two dimensions oi' considerable length is a very inconvenient tool to store away or carry. These tools have therefore' been made in such a manner that the two arms thereof may be taken apart or disassembled when not in use and when it is desired to use them again, they may be readily assembled and secured together in operative relation.-

It is oi' course essential that when the two parts are secured together they must be so arrangedy that they will accurately lie' at right angles to eachother and they must be capable oi' being secured together so rigidly that therewill be no loosenessor play between the parts.` It is, moreover, desirable that the assembling and disassembling of the partsV may be accomplished with the greatest ease and facility so that they may be taken down 'orstorage or put togethery for use with the least possible trouble and eilort.

Heretolore such squares'have been so arranged that the two parts would dovetail together, one being provided withv aslot so bevelled that the bottom portion thereof was wider than the upper por-tiony and the other part of the square being arranged' with a tongue correspondinglyl bevelle'd to lit into the slot. 7With such an arrangement it was necessary to assemble the two parts by sliding the tongue laterally into the slot as far as it would go, or until ,openings rorn'ied in the two members for the recept-ion of securing screws orthe like would register for-the reception of these screws. The parts would necessarily have to it very closely so that the sliding of the tongue into the slot was attended with some difliculty'and when the square becamev slightly dirty or corroded, considerable pressure would have to be eXe erted in order to' accomplish the` assembling ol" the parts. Likewise, when assembled, the parts were likely to rust or corrode unt-il it was extremely difficult to pul'l the tongue laterally out oi" the slot to take `down the parts. Moreover, the continual sliding in and out of the tongue would have a` tendency to wear the Aadjacent edges of the tongue and slot until the parts would no longer tit' close- Serlal No. 488,436.

ly and the arms of. the square would no longer form aneXact right angle.

One object of my invention is to provide a takedown square which may be assembled and disassembled with greater ease and facility than those known heretofore.

Y Another vobject of my inventionis to provide the arms of a take-downsquare with a tongue and a slot, respectively, so arranged thatY the tongue is adapted to be received at the top of .the slotv so that it will be very easy to place the parts in assembled relation.

Another object of my invention is to provide the-armsol1 a take-down square with al tongue and slot, respectively, soshaped that when the securing members which serve t0 secure the parts togetherare tightenedinto place, the parts of. the square ,will be drawn into close iitting relation thereby and will also be lirmly secured together..

A still further object ofl my invention is to provide a take-downA square with a v.slot and tongue connection so arranged that one of the parts may be provided with self-contained screws or screws permanently secured theretowhich serve to secure the partsin operative assembled position. `In the squares heretol'oreknown where the tongue was anranged to slide laterally into the slot, the

provision of sucl'nscrews was impossible.

Two-.these and otheri endsthe ,invention consistsinfthe novel ieatu-nes and combinations of parts4 to be hereinafter described and claimed.

Init-he accompanying Adrawings zv Fig. l isaiside elevational View ofL a takedown square embodying the principles ot my invention;

Fig. 2 is an enlarged elevational view of a1 portion oi:i one arm of the square showing the recess formed therein to receive a part of the fother arm;

F ig. 8'is an elevational View of the nemaining arm of; thesquare taken from the side opposite'A ,that` shown in Fig. l, and showing'- vthe connecting tongue ;V

Fig. 4 is a sec-tional view on line lk-l ol" Fig. 1;

Fig. 5 is a sectional view Aon line 5-5 of Fig. 1; and

Fig. l6 is an enlarged sectional view similar toFig. 5,.but.showing the. manner in'whlch the screws are secured in place.

`Tohillustratethe principles .of my invention, I have shown at 10 a take-down square which may be graduated in any desired or approved way. The square consists of the two arms 11 and 12 which are arranged at right angles to each other as usual. As may be inferred from the foregoing description, these two arms are arranged to be taken apart and are detachably secured together at a point near the angle formed thereby.

rThe arm 11 as shown in Fig. 2 is, in this instance, provided with a short right angle projection 13 extending` in the direction of the second arm of the square. This makes possible the provision of a relatively long recess or slot la. 'lhe slot 1st has its rear end somewhat oval in shape, although this may be varied, if desired, and around the edge thereof is bevelled at 15 as shown in Fig. lt is noted that the bevel extends upwardly and outwardly so that the slot or recess is wider at the top than at the bottom thereof for a purpose to be hereinafter described. rllie bottom 16 of this recess is provided with a pair of threaded openings 17 and a plain opening 18.

As shown in Fig. 8, the arm 12 of the square is provided with a tongue 19 somewhat narrower than the arm of the square, thus providing the shoulders 2O and 21 which abut, respectively, the shoulders 23 and 22 upon the arm 11 at each side of the recess 14. The tongue 19 is shaped to correspond with the shape of the recess 14C. The edge of the tongue is bevelled at 24 in a coinplementary fashion to the edge of the recess 14 so that the tongue is narrower at the bottom portion thereof than at the top.

rlfhe tongue is provided with two selfcontained screws 25, the heads of which are broadened, as shown more particularly at 26 on Fig. 6, the body passing through openings in this arm of the square and being provided with a flange 27 which is spun over upon a shoulder 28 on the square to hold the screws loosely in place. It will be obvious that while a turning motion of the screws is permitted as the shoulder 28 is loosely engaged between the broadened head 26 and the flange 27, the screw will be prevented from dropping out of the opening so that it will always be ready for use. The lower threaded portions 29 of the screws are adapted to be received in the threaded openings 17 in the bottom of the recess 14E. The tongue 19 is also provided with a dowel pin 30 which serves as an aligning and positioning pin, and is adapted to be received in the opening 18.

Vhen it is desired to assemble the two parts of the square, the tongue 19 is placed within the recess 14; by direct superposition thereupon. The dowel 30 will enter the opening 18 and the screws the openings 17. The screws are then turned to secure the parts rigidly together. It will be obvious that the turning of the screws will draw the tongue 19 down into the recess 14C and, owing to the shape of the walls of the recess and the correspondingly shaped edge of the tongue, the parts will be drawn more closely together as the screws are tightened. As there is no sliding of one edge upon the other, there will be no appreciable wear upon these edges so that the parts will always lit properly. lt will be obvious that the tighter the screws are turned, the tighter the tongue will be drawn into the beveiled recess and the more rigidly the parts will be secured together. 'i`his connection, together with the rigidity provided by the shoulders 20 and will forni an el'icient and secure means for connecting the two parts of the square, and many of the disadvantages present in squares heretofore iinown will be obviated.

lVhile l have shown and described a preferred embodiment of my invention, it will be understood that the saine is not to be limited thereto in all of its details, but is capable of many modifications and variations which fall within the spirit of the invention and within the scope of the appended claims.

lV hat l claim is:

1. In a take-down square, a pair of ineinbers adapted to be joined to extend at right angles to each other and provided respectively with a cooperating tongue and slot, one of said members being adapted to be applied to the other by direct superposition to cause the tongue to overlie the bottom of the slot, the edges of said slot being beveled to liare outwardly and the corresponding edges of the tongue being complementally beveled, and fastening members engaging the tongue and the bottom of the slot to secure the parts together and to draw the beveled edges into close engagement.

2. In a taire-down square, a pair of members adapted to be joined to extend at right angles to each other, one of said members being provided with a tongue, the other member being provided with a recess having sides iiaring outwardly from the bottom thereof to receive said tongue from the top of the recess, means engaging the tongue and the bottom of the recess to force the sides of the tongue into tight engagementwith the diverging sides of the recess and a positioning dowel pin secured on the underside of said tongue and adapted to enter an opening in the bottom of the recess.

3. In a take-down square, a pair of members adapted to be joined to extend at right angles to each other, one of said members having a projecting tongue, the other mem ber being provided with an open ended recess arranged to receive said tongue through the top of the recess', and means passing through the tongue and adapted to take into the bottom ot' the recess to draw said members together, said means being permanently secured to said tongue.

4. In a take-down square, a pair of members adapted to be detachably secured 'together, one of said members having a recess with upwardly and outwardly flaring sides, the other having a tongue with complementally beveled edges adapted to it in said recess by direct superposition of the tongue over the recessed member, and fastening screws permanently secured to one of said members and adapted to be threaded into the other to secure the parts together and draw the adjacent edges of the recess and tongue into close engagement.

In a take-down square, a pair of mem* bers adapted to be detachably secured t0- gether, one of said members having a recess and the other having a part adapted to be received therein by direct superposition of parts of said members, the edges of said part and recess being complementally beveled, and means passing through Jooth ot said members to secure them together, said means being arranged when tightened to draw said beveled edges into close contacting relation.

6. In a take-down square, a pair of members adapted to be detachably secured together, one otl said members being provided with a U-shaped recess, the other member having a correspondingly shaped tongue adapted to be received therein, the edges of said recess and tongue being` complementally beveled sothat. one part may beA applied' to the other by direct superposition, and securing means adapted to draw said edges into close engagement to prevent relative angular movement of the members.

7. In a take-down square, a pair of members adapted to be detachably secured together, one of said members being provided with a U-shaped recess, the other member having a correspondingly shaped tongue adapted to be received therein, the edges of said recess and tongue being eomplementally beveled so that one part may be applied to the other by direct superposition, and means engaging in said tongue and the bottom of said recess for drawing said edges into close engagement.

8. In a take-down square, a pair of members adapted to be detachably secured together, one of said members being provided with a recess having outwardly and upwardly fiaring sides, the other of said members having a part with downwardly and inwardly beveled edges to lit closely against said sides, and adapted to be received into said recess from the top thereof, and fastening members engaging said part and the bottom of the recess to draw said beveled edges into close engagement. Y

In witness whereof, I have hereunto set my hand this 15th day otl July, 1921.

FRANK I. KIMBALL.

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