US1651830A - Angle dividers or bisecting bevels - Google Patents

Description

J. MORESHEAD ANGLE DIVIDERS OR BISECTING BEVELS Dec. 6, 192 7. 1,651,830

Filed Avril 1927 Jul 171 MU YEEHE'DC/ [1 1 vEwTm' AHUYVIE'L/ 3 pairs It has for itspurposes to provide new and Patented Dec. 6, 1927.

; erates rare at 1 ANGLE DIVIDERS on eisnorme ravens. 3

' Application filed A ril is,

-My invention relates :to improvements in tools of the type known as angle dividers or bisecting bevels'used by carpenters, cabinet makersand othertradesmen;

established" by the locating arms, embodies means for locating and holding infiXed 0S1- tion what I choose to term the third evel" blade, while and 'after'the bisectlng arms are moved to a closed or other position; to

provide anew and novel combination embodying two bisecting arms, and a third bevel blade adaptable for determining the center of any desired angle, and to simplify the procedure in establishing such center;

' to provide a novel construction providing V bevel the bisecting arms and third bevel blade.

for the locking of the third or bevel blade in any desired position while the bisecting arms are free to close or position other-wise; and to provide-the various other advantages and results made evident from the following specification. V

I accomplish the objects of my invention as shown in the accompanying drawings which form'a part of this specification and in which Figure 1 shows my assembled device in an open position with itsthird bevel blade fixed and its bisecting arms in a nearer closed ositionQ Figure 2 shows the third blade fixed and the bisecting arms closed. It is in this position that the device is adaptable for use in iron mitre boxes. Figure 3 shows a side view of my device in its closed position with a sectional iew at its hinge end to show the locking device adaptable to control the third bevel blade. Figure 4 shows the detail of the locking nut and threaded bolt on which are hinged Referring again to Figure 1, A shows the center member slotted at B so as to allow the sliding therein of the threaded screw 0,

over which is positioned an orifice in one end of each of the locating arms D and E. The nut C is adaptable to tighten and lock the arms D and E in any desired position. The opposite ends of the locating arms and are pivotally hinged by means of orlfices in said arms fitted over the pivots H and I on the bisecting arms F and G. The pin J J similarly until it also the spirit of the invention. not wish to be limited to the exact'details 1227. Serial 154,243.} a 5 .io in iiroansi nan, or 3300m M ssacrrnsni'rs, g

is; projected from the underside ofithe bi- I secting' arm G, adaptable to engage the thirdgj' evel blade K as the bisecting arm G: is

' opened, and positionv s'aidithird bevel blade so asto'exactly registerzwith-the armG; Figure 4, L shows the; p

Referring again to head of threaded bolt on whichrare hinged the bisecting arms and M shows thatIpo'rtion of; the bolt stem which isflattened to fit ausimilar shapedorifice in A to avoid-'turning as the 7 N is tightened. 0 "shows a shoulder slightly thicker than the combined Gtadaptable to pass througn' the center; post locking nut.

arms F and third bevel'blade. if

orifices in'the said arms, and to allow them free'play when the locking nut P, is tightened. I

throughout the various views.

7 I will now describe the steps required to use 'my improved device with making a cut of a given angle. Say e. g. if The hinged end of my. device is positioned in the corner and the bisecting arms F and G opened until they which join to make the corner.

As the bisecting arm opens the third bevel blade K contacts withthe' which the arm G rests. While the blades are n this position the nut N is tightened,' locking-the third bevel blade Kin position.

The bisecting arms F and. G are then closed and the center post A side of mitre-box. 7

- The cutting angle of the mitre-box is next adjusted parallel to the third bevel blade and the out then is not required.

While I have illustrated and described a I Similar letters refer to similar 'parts' contact with the sides G is openedthe prO ecting pin side against laid parallel to the made The use of dividers a mitre box in t is desired to fit a moulding into a corner; I 8O preferred construction for carrying my n vention'into efiect, this is capable'of variatlon or modification without departing from I therefore do of construction herein set forth but desire to avail myself of such variations and modifications as come within, the scope of the v pmgdcd claims.

loo

Having thus described invention I claim as'new and desire to secure by Letters Patent of the United States ofAmerica:

1. An instrument of the type described comprising an elongated base'mei'nber formed with a slot therein, three blades pivotally r of their ends pivoted to two of thelbladesi slot in thebase so mounted at a common point on one end of said base member, a pair of arms having one constituting a pair and theiremaining ends pivoted to a common means slidablein'the that Said, Pai 9f; blades connected to said arms Wil noove outwardly from the base and inwardly to thebase simultaneously and at the same relative angle With respect to the base, a pin on oneotsaid pair of blades .engagingthe remaining blade to move the same when .the pair of 1 blades are moved ;.outwardly from -the base, and meansior holdlng the said remaining blade inthe position to WhlChit has, been' moved when; the other blades arereturnedto their normal closed position. i

2. 'An instrument ,of zomprising an elongated; base member formed with aslot therein, three blades pivotally mountedat a eommonpoint on one end of the type described said" base member, a pairofarms each having one of-theirnends pivotallyeonneeted to two ofntheblades constituting a pair and the remaining, ends p voted to a common means slidable in the slot in the base so that the said pair qfgbla desponneoted to sai d arms will move outwardly from the base and'inwardlyv'to 'therbase simultaneously and at the same relative anglewith respect to the base,

a pin on one of said pair. of'bladesse-i igaging the remaining blade when the-pair of blades 4 said remaining bladeinua position col registry with the {blade flea-try ng the pm at its outermost pOSltlOIl In: testimony whereof I a-flix myisignature;

position. 140

JOHN MORESHEAD; i

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