US1068124A - Compound instrument. - Google Patents

Description

G. F. HALL.

COMPOUND INSTRUMENT.

APPLIUATION FILED AUG. 21, 1912.

1,068, 124. Patented July 22, 1913.

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G. P. HALL. COMPOUND INSTRUMENT.

APPLICATION FILED AUG. 21, 1912.

Patented July 22, 1913.

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WITNESSES:31 30 36 41 4o 39 a INVENTOR LE EQI E F. H5111 COLUMBIA PLANOGHAPH CD..\VASHINGTON GEORGE l5. HALL, OF NEW'ARK, NEW JER$EY, ASSIGNOR OF ONE-HALF T0 GEORGE E. BILL, OF EAST ORANGE, NEW JERSEY.

COMPOUND INSTRUMENT.

Specification of Letters Patent.

Patented July 22, 1913.

Application filed August 21, 1919 Serial No. 716,16

To all whom it may concern lie it known that l, GEORGE F. l'lALL, a citizen of the United. States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful ln'iprovements in Compound lnstruments; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to characters of reference marked thereon, which form a part of this specification.

The present invention relates, generally, to improvements in compound instruments, and the invention refers, more particularly, to a combined l -square, protractor, bevel and triangle, arranged so as to be capable of adjustment in different angles.

The invention has for its primary object to provide a simple and easily manufactured device of the character above forth, the same being capable of use for many purposes, such a square and bevel, a draftsmans triangle and section lining instru ment, and many like purposes.

Another object of the present invention is to provide in a device of the character describ d, means whereby the same can be used in combination with the ordinary T-square, an example of such use being the application of the device to a i -square for producing a guide for section lining at angles not embra :ed by the ordinary forms of triangles.

A. still furth r object of this invention is to provide in a device of the character described, a novel and positive means whicl'i is quickly and easily operated to loci; in any desired adji'isted relation to each other the movable or adjustable parts of the device.

()ther objects of the present invention, and other uses to which it may be adapted, will be readily understood from an inspection of the accomymnying drawings, as well as from the following detailed description of the said invention.

The invention consis s, primarily, in the novel and simple construction of compound instrument hereinafter set forth, and the invention consists, furthermore, in the novel arrangements and combinations of the various parts, as well as in the details of the construction thereof, all of which will be hereinafter more fully described in the following speclfication and then finally embodied in the clauses of the claim which are appended to and which form an essential part of this specification.

The invention is clearly illustrated in the accompanying drawings, in which 2- Figure 1 is a plan view of the novel compound instrument as applied in use with an ordinary 'l -sqnare. Fig. 2 is asin'iilar plan view, illustrating by dotted representation the adj ustlnent of the movable or adjustable part of-the device. Fig. 3 is a cetail transverse section of the movable or adjustable head of the device, said view being drawn on an enlarged scale. Fig. -l is a detail bot tom view of a portion of the instrument illustrating the pivotal connection of said movable or adjustable head with the main body of the device, and showing the rear face of the locking means. Fig. 5 a detail longitudinal sect-ion, enlarged, of the locking means for securing the movable or adjustable head in a desired adjusted relation to the main body of the device. llig. (3 is a plan view of a slightly modified form of locking means; and Fig. 7 is a loi'igitudinal section of the same.

Similar characters of reference are em ployed in all of the above described views, to indicate corresponding parts.

Referring now to the several figures of the said drawings, the referencecharacter 1 indicates the complete compound instrument made according to and embodying the principles of the present invention, the same comprising a main body-portion 2 provided with a straight edge 3, and having a suit-- able measuring scale a located along said straight edge 3, said scale comprising any desirable spacodivisions or graiduat-ions. Extending from one end of said main bodyportion 2, and preferably at an angle of forty-five degrees therefrom, is an arm 5. Pivotally-connected, by means of a pivotstud 6, with the free end of said arm 5 is an adjustable head, coin n'ising a pair of platemembe 7 and 7, which are superimposed one above the other but spaced slightly apart from each other, by means of an interl'nediate block or plate 8 to which said platc-members T and T are riveted or otherwise secured. Said intermediate block or plate 8 is of considerably less length than the lengths of said plate-members, so that the intervening space between the latter, adjacent to their ends, is free or open thus permitting the said plate- members 7 and 7 5 t straddle the said arm at one end and the main body-portion 2 at the other. The free ends of said plate- members 7 and 7 which overlap, said main body-portion 2, are preferably beveled or cut so as to form a 1 finder or pointer-member 9, which serves, in connection therewith a proper protractor or scale of degrees 10 arranged upon the face of said main body portion 2, to indicate the adjustment of said head in desired angles with relation to said main body-portion 2 and its arm 5.

The upper plate-member 7 is provided, at ,its inner longitudinal edge, with an upwardly projecting longitudinal rib 11, the

same extending at right angles to said platemember 7; and, in like manner, the lower plate-member 7 is also provided, at both its inner and outer longitudinal edges,'with upwardly projecting longitudinal ribs 12 and 13 respectively, the same extending at right angles to said plate-member 7. The respective ribs 11 and 12 serve to position the instrument on the work, when the same is used, for example as a bevel, T-square or the like, and the rib 13 serves to position the instrument against the edge of a T-square, as A in Fig. 1, when using said instrument in such connection. Furthermore, the ribs 12 and 13 projecting from the surface of said plate-member 7, and being of the same height, serve to level said instrument, and hold the same above the drawing paper, or slightly spaced away from the paper, so that the body of the instrument does not cont-act with the paper, a feature of great advantage when using the instrument as an aid in drafting section lining upon a drawing, since the work can be covered without danger of smutting, rubbing or blotting, as

will be readily understood.

In order to lock said head in any desired adjusted position with relation to said main body-portion 2 and said arm 5, the following novel means is provided :The pivotstud 6 is provided at one end with a headpiece let which is cupped out or concaved on its under side, as at 15, thus providing at the marginal edges of said head-piece a sharp gripping edge 16 which contacts With the surface of said plate-member 7 Said pivotstud 6 is provided, adjacent to its free end with exterior screw-threads 17. Connected with said screw-threads 17 of said pivot-stud 6 by means of its interiorly 6O screw-threaded perforation 18 is a lock-nut member 19, the same being cupped out or concaved on its under side, as at 20, thus providing a sharp gripping edge 21 which contacts with the surface of said plate-memher 7. Extending outwardly from said lock-nut member 19 is a lever-arm 22 provided at its free end with an upturned finger-piece 23 whereby said arm 22 may be manipulated to tighten or loosen said lock nutmember. To adjust said head, said lever-arm 22 is moved in one direction whereby said lock-nut member 19 is turned upon said screwthread 17 of said pivotstud 6 to loosen the same. The said head is then swung upon said pivot-stud into the desired position, whereupon said lever-arm is moved in an opposite direction, tightening said nut-lock member 19 and causing the respective separated plate- members 7 and 7 to be engaged by the gripping edges 16 and 21 of the respective parts 1d and 19, thereby forcing into frictional or binding engagement with the opposite sides of said arm 5, the respective plate- members 7 and 7, the said gripping edges 16 and 21 by biting the surfaces of the respective platemembers 7 and 7 preventing any accidental disarrangement of the said locking means when thus brought into locking or holding ngag ment.

As it may be desired to remove said head from its connection with said main bodyportion 2 and its arm 5, thesaid head-piece of said pivot-stud 6 is provided with a pair of suitably disposed spanner-wrench receiving holes or depressions 24:, by means of which said. pivot-stud may be removed from its connection with said lock-nut member 19, and thus from its pivot-providing relation to said head and arm The said main body-portion 2 is further provided with diamond shaped perforations 25, the same being located opposite the main divisional points of the graduated scale 1. These perforations serve as a means for striking arcs, circles or the like, since by inserting a sharp instrument, such as a brad-awl, in one perforation and a pencil or marking instrument in another, the latter may be caused to strike the desired are or circle. The diamond-shapedperforation is provided since it provides a wedge-like edge or means for holding the instrument, no matter in which direction the movement of striking the are or circle takes place, thus firmly holding said instrument and insuring a mathematically correct are or circle and an evenly described line indicating the same, free from waves or irregularities.

Referring now more particularly to Figs. 6 and 7 of the accompanying drawings, there is illustrated therein a slightly modified form of locking means for securing the head of the instrument in desired adjusted relation to the main body-portion. In the said Figs. 6 and 7, the main body-portion is indicated by the reference-character 26, the arm connected therewith by the reference-character 27, and the respective platemembers forming the adjustable head by the reference- characters 28 and 28, the general construction and related connection of said thus referred to parts being the same as hereinabove described in connection with the main or preferred construction of the novel instrument comprisingthis invention. Said head is pivotally connected with said arm 27 by means of a pivot-stud 29 provided with a head-piece 30 the under surface 31 of which is suitably inclined. The shank of said pivot-stud 29 is provided with suitable screw-threads 32 whereby a nutpiece 33 is connected therewith, said not piece being cupped out or concaved on its under side, as at 84:, thus providing at the marginal edges of said nut-piece a sharp gripping edge 35 which contacts with the surface of said plateanember 2S. Slidably arranged upon the surface of said platemember 28 is a wedge-block or lock-piece 36, the same being provided with a slotted end or cut out portion 87 adapted to straddle said pivot-stud shank and thus permit said wedge-block or locl -piece to be introduced between said head-piece 30 of said pivot-stud 29 and said plateanember 2S. Pivotally mounted in connection with the head formed by said plate- members 28 and 28 by means of its journal-studs 38 is a rotatable member 39 provided with an outwardly projecting arm 4E0. Pivotally connected with the free end of said arm 40 and connected in like manner at its opposite end with said wedge-block or lock-piece 36 is a connecting link-member ll. Extending from said rotatable-member 89, in substantially an opposite direction to that of the arm 40, is a lever-arm 42 provided at its free end with a turned-up finger-piece 4.3 for manipulating the same. As will be clearly understood from an inspection of Figs. 6 and 7 of the drawings, when said rotatable member 89 is turned in a proper direction by the lever-arm 42, it tends to straighten the toggle formed by the arm 4-0 and its connecting link-member 41, and thereby forces forward said wedge-block or lock'piece 36 which has the tendency to exert a pull upon said pivot-stud 29, binding in rigidly held or locked engagement said nut-piece 33 and plate-member 28 and said wedge-block or lock-piece 36 and platemember 28 with the free end of said arm 27, thus firmly locking the head in adjusted relation to said main body-portion 26.

It will be clearly apparent, that the compound instrument above described is readily and quickly adjustable, and securely maintained in its adjusted positions, and that the same is readily adapted to the performance of many functions and operations both in building and construction work, as Well as in drafting and similar work.

I am aware that changes may be made in the various arrangements and combinations of the several parts without departing from the scope of my present invention. Hence, I do not limit my invention to the exact arrangei'nents and combinations of the parts as herein described and illustrated in the accompanying drawings, nor do ll confine myself to the exact details of the construction of the said parts.

I claim 1. A compound instrument connprising a main bodyportion provided with an angularly extending arm, an adjustable head pivotally connected with said arm and having its free end straddling said main bodyportion, ribs projecting in opposite direc tions from the inner niarginal'edges of said head, and a rib projecting from the outer marginal edge of the under side of said head, said last-mentioned. rib serving to position said instrument for use in connection with a T-square, substantially as and for the purposes set forth.

2. A compound instrument comprising main body-portion provided with an angularly extending arm, an adjustable head pivotally connected with said arm and having its free end straddling said main bodyportion, ribs projecting in opposite directions from the inner marginal edges of said head, and a rib jn'ojecting from the outer marginal edge of the under side of said head, said last-mentioned rib serving to position said instrun'ient for use in connection with a T-square, and locking means for securing said head in desired adjusted rela tion to said main body-portion and its angularly extending arm, substantially as and for the purposes set forth.

3. A compound instrument comprising a main body-portion provided with an angularly extending arm forn'led integral with said main b j dy-portion at the one end thereof, and a head pivotally connected at one end with said arm, said head comprising a pair of plate-members registered one with the other, an intermediate plate for securing said plate-1neinbers in spaced-apart relation to each other to provide intervei'iing spaces between the ends of said plate-members so that one end of the latter will straddle said main body-portion in movable relation thereto and the other end will straddle said angularly extending arm in pivoted relation thereto, an outwardly extending guide-rib connected with the inner marginal or go of the upper of said plate-members, an outwardly extending guide-rib connected with the inner marginal edge of the lower of said platemembers, and an outwardly extending guide-rib connected with the outer marginal edge of said lower platemember, said last-mentioned guide-rib serving to position said instrument for use in connection with a 'l'stmare, substantially as and for the purposes set forth.

4. A compound instrument comprising a main body-portion provided with an angularly extending arm formed integral with said main body-portion at the one end thereof, and a head pivotally connected at its one end with said arm, said head comprising a pair of plate-members superimposed and alined one with the other, an intermediate plate for securing said plate-members in spaced-apart relation to each other to provide spaces between the ends of said plate-members so that one end of the head will straddle said main body-portion in movable relation thereto and the other end will straddle said angularly extending arm in pivoted relation thereto, an outwardly extending guiderib connected to and alined with the inner marginal edge of the upper of said plate-members, an outwardly extending guide-rib connected with the inner marginal edge of the lower of said plate-members, an outwardly extending guide-rib connected with the outer marginal edge of said lower plate-member, said last-mentioned guide-rib serving to position said instrument for use in connection with a T-square, and locking means for securing said head in desired adjusted relation to said main bodyportion and its angularly extending arm, substantially as and for the purposes set forth.

5. A compound instrument comprising a main bodyportion provided with an angularly extending arm formed integral with said main body-portion at the one end thereof, and a head pivotally connected at its one end with said arm, said head comprising a pair of platemembers registered one with the other, an intermediate plate for securing said plate-members in spaced-apart relation to each other to provide intervening spaces between the ends of said plate-1nembers so that one end of the latter will straddle said main body-portion in movable relation thereto and the other end will straddle said angularly extending arm in pivoted relation thereto, an outwardly extending guide-rib connected with the inner marginal edge of the upper of said plate-members, an outwardly extending guide-rib connected with the inner marginal edge of the lower of said plate-members, an outwardly extending guide rib connected with the outer marginal edge of said lower plate-member, said lastmentioned guide-rib serving to position said instrument for use in connection with a T- square, and locking means for securing said head in desired adjusted relation to said main body-portion and its angularly extending arm, comprising a screw-threaded pivotstud, a head-piece connected with said pivotstud, said head-piece being cupped out on its under side to provide a sharp marginal grip ping edge engaging one of said plate-members, a nut-piece provided with an interiorly screw-threaded perforation adapted to receive said screw-threaded pivot-stud, said nut-piece being cupped out on its under side to provide a sharp marginal gripping edge engaging the other or opposite of said platemembers, and a lever-arm connected with said nut-piece for tightening or loosening the same to draw the ends of said respective plate-members into rigid frictional holding engagement with said angularly extending arm, substantially as and for the purposes set forth.

6. A compound instrument comprising a main body-portion provided with an angularly extending arm formed integral with said main body-portion at the one end thereof, and a head pivotally connected at its one end with said arm, said head comprising a pair of plate-members superimposed and alined one with the other, an intermediate plate for securing said plate-members in spaced-apart relation to each other to provide intervening spaces between the ends of said plate-members so that one end of the latter will straddle said main body-portion in movable relation thereto and the other end will straddle said angularly extending arm in pivoted relation thereto, an outwardly extending guide-rib connected with the inner marginal edge of the upper of said platemembers, an outwardly extending guide-rib connected with the inner marginal edge of the lower of said plate-members, an outwardly extending guide rib connected with an outer marginal edge of said lower platemember, said last-mentioned guide-rib serving to position said instrument for use in connection with a T-square, and means for forcing the ends of said respective platemembers into rigid frictional holding engagement with said angularly extending arm to secure said head in desired adjusted relation to said main body-portion, substantially as and for the purposes set forth.

7 A compound instrument comprising a main body provided with an angularly extending arm, an adjustable head provided with one end adapted to straddle said arm in pivoted relation therewith and an opposite end adapted to straddle said main bodyportion in slidable relation therewith, and means for forcing the first-mentioned straddling end of said head in rigid frictional holding engagement with said angularly extending arm to secure said head in desired adjusted relation to said main body-portion, comprising a screw-threaded pivot-stud, a head-piece connected with said pivot-stud, said head-piece being cupped out on its under side to provide a sharp marginal gripping edge engaging one side of said straddling end of said head, a nut-piece provided with an interiorly screw-threaded perforation adapted to receive said screw-threaded pivotstud, said nut-piece being cupped out on its under side to provide a sharp marginal set forth above I have hereunto set my hand gmppmg edge engaglng the opposlte slde of thls 20th day of August 1912.

eaid straddling end. of said head, and a lever GEORGE F. HALL. arm connected with said nut-piece for ma- \Nitnesses: is nipulating the same. FREDK. C. FRAENTZEL,

In testimony, that I claim the invention FRED'K. H. W. FRAENTZEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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