US700304A - Combined rule and square. - Google Patents

Description

No. 700,304. n Patented May 20, |902.

n F. J'. ITUMBS. COMBINED RULE AND SUUARE.

(Application led July 29, 1901,)

(No Model.)

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f Falls, in the county of Flathead and State of Mont-ana, have invented certain new and use?` UNITEDA YSTATEsl PATENT" FRANK J. cooMBs, or ooLnivLiAfrALLs, Mon-TANA.

COM BIN En uut-E AN D SQUARE.

SPECIFICATION forming part of Letters'ratenr No. 7oo,3o4, dateeMay 2o, 1902.

Application inea my 29, 1901. serial Naf/0,111. un, man.)

To all wiz/0771,11?? may concern/f Be it known that I, FRANK J. CooMBs,a citizen of the United States, residing at Columbia ful Improvements in a Combined Rule and Square; andl do declare the following to bek a l'ull, clear, and exact description ot' the in`y vention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to a combined rule The object-ofthe invention is'to provide a device of this characterwhich may be used as an ordinaryfolding foot-rule, atry-square,

or a miter-sqnare,'and'which'shall be simple of construction, durable in use, and compar-r atively inexpensiveof production. f

With these andother objects in view the invention'consists of certain novel features of construction, combination, and arrangement.

of parts, which will be hereinafter more'fully described, and particularly pointed out in the appended clai`m.' l

In the accompanyingdrawings,Figure lis -a side elevation ofza two-foot rule, illustrating the application of the invention. Fig. 2 is a view illustratingthe rule in its folded position, one of the outer legsofthe rule being shown in full lines to form atry-square andin'dotted lines toforin4 a miterlsq'u'are, the angle of the said miter beingan acute angle.

Fig. 3 is a similarview; showing the `outer leg4 in full lines lto forni avtry-s'quare and in dotted lines to form a miter-square,the angle of the miter-sqnare being an obtuse angle;v Fig. 4 is a detail perspective viewl ofthe notched head, and Fig. 5 is a longitudinal sectional view through theinnerendjof thatleg'of the rule which forms the blade of the square and' showing the bolt seated in one of thenotches of the notched head. 1

'Referring' to the drawings, l and 2 denote the-inner hinged legs ot' an ordinary two-foot rule, and 3 and 4 represent the outer legs hinged to the outer ends ofv said inner legs l and 2. Tothe inner leglis hinged a bosser extension 5, having ahead 13, provided with a series of notches, preferably three. Formed at the union or intersection of the boss and its head is a double angular shoulderb, conends ot' which is interposed and connected the rss leg or member/t ofthe rule,which is provided wit-h a recess therein, in which is seated a spring b. 'A latch 17, having a lug a, and a bolt 0,2 are alsoseated in the recess, the lug'be-l ing provided with'a pin a', which extendsfinto the'coils of the spring, so as to retain the same .l

in pro'perposition. The plate 10 is provided" 165 E" with a slot, through which passes a projection 17 ofthe latch'l, by meansof which theboltv 1 a2 of said latch, as shown in Fig. 5, is'adapted to accurately engage or disengageja'ny o ne otv l v :the notches in the boss when required. The

inner endsof theA plates 10 andvllf are spaced`vv` notchesin the head ofthegboss. f` When it is desired touseth'e device as a lapart and made in vsemicircular shape, vbe`\` tween which ispivotally mounted the headof the boss 5, the said sem'icircular-'shapedends' Y I kof the plates being adapted to abut against 'the vertical circular-shaped shoulders and co-v aot together Wherebyto adjust the member 4 l -of the rule at different angles by means'ot the bolt of the latch' registering with the square, the parts are narranged as shown in vmiter-square to lay oft" a`line atan acnteanfulllines in Fig. 2--thatiswtoy say, withfthe vdicator swung at. rig-ht angl'estosaidleg. 'ji When it is desiredjto vuse thedevice as a gle, the indicator isadjusted toy the position shown in dotted lines in Fig. 2, in whichadi justment of theindicator it is held in itsposition by the boltengagingoneof kthe notches' of thehead-boss.

When it isv desired tolayo 3, which brings the indicator to the position as a try-square the bolt may beAVithdrawn amlte'rfatanif. obtuse angle, the boss isswung .outwardly` from lthe position shown in full linesin Fig.l

. 95` shown in dotted linesin Fig. V. When this position, if it isde'sired to use thedevice l `from its notch and the indicator lmoved to the positionas shown'in funnnesin Fig. e. we I It will thus `be seenthat Ifhave adapted an ordinary two-'foot rule to the layingoft of lIniy ters and squares without materially increas- 1 ing the cost of production, and thereby I am enabled from a single tool or instrument to l cal and partly curved, and an outer member secure, in addition to its function as a rule, three separate and distinct functions-to wit, the laying oit of work'at right angles, at acute angles, and at obtuse angles.

From the foregoing description, taken in connection with the accompanying drawings, the construction, mode of operation, and advantages of my inventionwill be readily understood without requiring a more extended explanation.

Various changes in the form, proportion, and details of construction may be made within the scope of the invention without departing from the spirit or sacrificing any ot' the advantages thereof.

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

The combination with an ordinary two-foot rule having on the outer end of one of its hinged members a boss with a notched head, and shoulders on opposite sides of the head formed at the intersection of said boss and` said head, the shoulders being partly vertiof the rule having at its inner portion a recess a spring-latch with a bolt mounted in the recess, of an indicator consisting of two plates with curved inner ends secured to the inner end of the outer member of the rule, a rectangular opening in one of the plates for the passage ot a projection of the latch to operate the latch so that the bolt thereof will coact with the notches of the head of the boss, and the inner curved ends of the plates of the indicator pivoted on opposite sides of the head of the boss whereby said vertical and curved shoulders formed at the intersection ot' the boss and its head coaet with the curved ends of the plates and the inner Vertical edge walls thereof, substantially as specitied.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FRANK J. COOMBS.

WVitnesses:

THnoDoRE CHRISTENSEN, LEWIS PETERSON.

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