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Publication numberUS911846 A
Publication typeGrant
Publication dateFeb 9, 1909
Filing dateDec 14, 1907
Priority dateDec 14, 1907
Publication numberUS 911846 A, US 911846A, US-A-911846, US911846 A, US911846A
InventorsWilbert J Shuart
Original AssigneeWilbert J Shuart
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Separable square.
US 911846 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


Patented Feb. 9; 19.09.

. p e e L. :VN

f THE Nokkls Ptrzlls co., WAsmNmaN, n. c




Specification of Letters Patent.

Patented Feb. 9, 1909.

Application led December 14, 1907.' Serial No. 406,426.

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` whichit appertains to make and use the same, reference being had to the accompanying drawings, and to the iguresof referencey marked thereon, which form a part of this specification. Y

This invention relates to new and useful improvements in squares, and consists in the construction and' arrangement of parts hereinafter fully set forth and claimed.

The object of the invention is to produce a square for artiticers wherein the arrangement is such as to enable the Vright angle parts of the square to be readily se arated so that they may be placed side by side for convenience in packing the implement in a tool box or for shipping, provisionbeing made for securing the parts together in a manner to retain themroperly in place without interfering with t euse of the imv lement.

The above object is Vattained y the structure illustrated in the accompanying drawings, in which-f y Figure 1 is a plan view of a square involving my invention, parts being broken away. Fig. 2 is a similar v1ew showing the right angle members detached. Fig. 3 is an exaggerated longitudinal section as on line 3-3 of Fig. 1. Fig. 4 is an exaggerated transverse section as on line 4--4 of Fig. 1. Fig. 5 is a fragmentary view in perspective, showing the members of the square detached, the graduations being omitted therefrom. Fig. 6 is an exaggerated transverse section ason line 6*-6 of Fig. 1.

Referring to the characters of reference 1 designates the wide blade or member of the square, and 2 the relatively narrow blade or member. Projecting at right angles from the member 1 are the opposed arms 3 having between them the longitudinally extending tapered slot 4, said arms lying in the plane of the member '1 and having at their outer ends the tenons 5. Projecting centrally into the slot 4 from the member 1 is a spring catch 6 which lies in the plane of the arms 3 and which for the greater portion of its length is one-half the thickness of the material of the square, the outer end of said catch being equal in thickness to the thickness of the l .of the se arable"parts of the square together, as ereinafter explained. The inner edge of each of the arms 3 is provided witha groove, and the opposite edges of the tenons 5 are also grooved for purposes hereinafter explained.

The member 2 ofthe square is provided at its inner end with a projecting ta ered blade 9 adapted to enter the tapered s ot between the arms 3, and having marginal tongues 10 adapted to enter the grooves lin the inner edges of said arms, as clearly shown in Fig. 4. The inner end of the blade 9 is rovided with a longitudinal recess 1l equa in depth to half the thickness of said blade adapted to receive the spring catch 6, said blade having Yat the terminal of said recess an aperture 12 into which the enlarged end of the spring ycatch is adapted to enter and the margin of which is adapted to be engaged by the shoulder 7 of said catch to lock said parts together. At the base of the blade 9 of the member 2 are the mortises 13 into which the tenons 5 on the outer ends of the arms 3 are adapted to enter, the marginal projections 14 of the member 2 having the tongues 15 lwhich enter the outer marginal grooves in the tenonsv 5 and in the outer ends of the arms 3.' j To join the parts or members of the square, the blade 9 of the member 2 is inserted longitudinally into the slot between the arms 3 of the member 1, the marginal tongues of the blade 9 entering the grooves inthe edges of said arms and the spring catch 6 engaging and lying in the recess 11 and aperture 12 in said blade, whereby the members of the square become rigidly locked together in the same plane. The tenons 5 on the arms 3 enterin the mortises at the base of the tongue of t e member 2 prevent the spreading of said arms 3 and assist in securely locking all of the parts in alinement, thereby obviating any projecting part to interfere with the use of the square. By this means of uniting the parts or members of the square, they become rigidly joined at right angles in a manner to enable them to be readily detached or separated, when desired.

To separate the parts of the square, it is only necessary to spring the catch 6 out-A wardly so as to disengage the shoulder 7 at the'end thereof from the aperture l2, when said parts may be detached by drawing longitudinally upon the part 2.

By this arrangement the right angle members of the square may be readily separated, enabling the square to be easily placed in a tool box without any part thereof projecting from said box, obviating the necessity of cutting a slit in the tool box for the protrusion of the end of the square, as commonly practiced.

Having thus fully set vforth my invention, what I claim as new and desire to secure by Letters Patent, is

A square consisting of separable parts, one part having opposed arms projecting at right angles therefrom in the plane thereof, said arms having marginal grooves, the other part having a projecting blade in alineinent therewith adapted to enter between said arms and having marginal tongues which enter the grooves thereof, a spring catch one part having opposed arms projecting at right angles therefrom in the saine plane,

.and inclined on their inner edges to forni a tapered opening between them and a spring` tongue extending between said arms in the plane thereof, the other part having an extending tapered blade adapted to enter between said arms, means for preventing lateral movement between the arnis and blade, the end of said blade having a recess to receive said spring tongue.

In testimony whereof l sign this specilication in the presence of two witnesses.

WlLBEl-T J. SrilUi-"tlt". itnesses O. B. BAENZIGER, G. HOWLETT.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4416040 *May 29, 1981Nov 22, 1983John Alan EnterprisesWeaving loom with interchangeable sections
US4550230 *Oct 18, 1982Oct 29, 1985International Jensen IncorporatedSpeaker grille with snap-in fastener system
US4916577 *Dec 20, 1988Apr 10, 1990Grumman Aerospace CorporationMethod of mounting removable modules
Cooperative ClassificationF16B5/0642, G05G1/12