US109868A - Improvement in combined rules, bevels, squares, and dividers - Google Patents

Description

GEORGE G. BURGESS.

or GRAFTON, OHIO.

Letters Patent No. 109,868, dated December 6, 1870; antedated November 26, 1870.l

IMPllQVERtIEhI'I"A IN COMBINED RULES, BEVELS, SQUARES, AND. DIVIDES.

The Schedule referred to in these Letters Patent and making pari: of the same.

I, GEORGE G. Boneless, of Grafton, in the county' of Lorain and State of Ohio, have invented certain Improvements in Combined Rule, Level, Try and Bevel, Square, Dividers, and Calipers, of which the following is a specification, in which- Figures 1, 2, 3, d, 5, and 6, are perspective views.

The nature of my' invention relates to the combination of various instruments.hereinafter named, and to a new mode of making jointed or folding rules, by which one part ot' a rule and' half' a joint are mallein one solid piece of rubber, or othei` suitable material, which enables nie to make 'a-sngle jointed rule by simplynsing a. fulernm pin to hold the two rule parts together; thus dispensing with numerous rivets and various other detached parts.

',lhe following description will enable those skilled in the art to make and use my improvement:

M y rule does notcilift'er in construction from those in common use, except in the modepf making the rule and joint from a singlel solid piece of rubber, or other suitable material, as shown at tig. 1, `the (two) rule and hinge. parts are then joined together 'with a rivet, a, as shown at iig.- 2, by which much greater strength and cheapness are obtainedt .lhe try-square' part 3 is made quite thin, and nearly as long'and wide as the part of the rule to which it is secured by a rivet, I), in a cavity, o, of corresponding shape, but much deeper,'to admit other parts, ywhich admits of its being opened up to a right angle, and is` then prevented from going further by a shoulder', (l, in the cavity o, tig. 2,:xnd shoulder e-tig. 3, coming together.A l 1 f, fig. 3, is an oblong slot, which extends halor' more the length of part 3, for the purpose of' allowingl the adjustment o t tie adjoining parts on the screw to any desired point in the slotf.

Before the binding-screw gis put to its place through the siotf, tig. 3, there is placed on it a. pair of coinbined calipers and dividers, j l.; and l on, the screw g passing through .them centrally, when one piece or half' ot' the calipers and dividers ismade rigid on' the opposite end from the screw, while the other half` part s lett tree to turn on the screw g.'

The calipers and dividers are shaped nearly as shown at fig. 5, and when closed are about as Kwide and not quite as long as parts 3 and 4, which all fold up in an oblong part and are closed down into the recess o in the rule part, iig. 2.

Parts 2, 3, 4, and 5, j, k, l, m,and n, are all shown in la combined form with the screw end g and bur c'. i

The bevel try-square part, tig. 4, corresponds in size and shape with part tig. 3, with vonly a plain oblong slot, h, which extends to near either end, and is held passed 'through slots f, tig. 3 and h, fig. 4, when the try and bevel-square with the calipers anddividers *in any desired position for use or otherwise, in or ,out ot' pocket.

part, iig. i5, 'which is protected from injury, when not in use, by th'e other partot' the rulefolding over it.

is as follows: Y The try-square ready for use' by Opening part 3-to -a right angle. y.

The beveisqnare may then be usedby releasing the thumb-screw a little, when "it can be set at any desired angle and firmly held by.' the screw g.

'.Lhe calipers and dividers are,also used in tlicsamc way, the rule being an index on which the pointsv of \the"dividers rcst when using the calipers, and cioe versa. v

' Whatl claim as new, and desire to secure by Lette rs Patent, isy p A folding rule, in combination with the square and' bevel attachment, holding by means' Ot' the bindingscrew g, the combined calipers and dividers, thc whole being constructed and arranged to operate together,

substantialy. in the manner as shown and set forth.

GEORGE G. BURGESS.

itnessesz S. G. WrLMO'r, A. D. SniTH.

to its place onpart 3 by the bimling-screwg, which is v thumb-screw bnr c is screwed down, thus retaining the I also use a spirit-level, n, in the edge ot' the rule The operation vof my combined rule and instruments

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