US711464A - Bevel. - Google Patents

Description

N0. 7I|,464. Patented Oct. 2|, |902.

C. BODMER.

B EV E L.

(Application led Apr. 19, 1902.)

(N o Model.)

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' UNITED STATES PATENT OFFICE.

CHRISTIAN BODMER, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR OF ONE- HALF TO JUSTUS A. TRAUT, OF NEW BRITAIN, CONNECTICUT.

.BEVEL.

SPECIFICATION forming part of Letters Patent No.7711,464, dated October 21, 1902. Application filed April 19, 1902. Serial No. 103,731. (No model.)

To tu whom t nfl/tty concern: v Be it known that I, CHRISTIAN BODMER, a

citizen of the United States, residingin NewL Britain, in the county of Hartford and State of C0nnecticut,haveinvented certain new and useful Improvements in Bevels, of which theV following is a specification. i This invention relates to bevels; and it consists,substantially, in the improvements hereto inafter particularly described.

The principal object of the invention is to provide a device or instrument of this kind which may be operated with accuracy and precision, and one alsowhich is capable of t 5` being successfully applied for use in a greater number of instances than is possible with many similar devices hitherto devised.

A further object of the invention is to provide a .bevel possessing perfect balancev or zo equal distribution of the Weight of the several parts or elements thereof, and one also possessing strength and durability and susceptible of being applied and adjusted with facility and effectiveness.

A further object is to provide a device or instrument of the character specified which is not easily distorted or sprung out of alinement at the working faces thereof,and one also which may be handled with great steadiness 3o in the various applications thereof to work of different kinds.

u The above and additional objects are attained by means substantially such as are illustrated in the accompanying drawings,

wherein- Figure 1 is a view in perspective ofone form 0r embodiment of bevel-stock constructed substantially in accordance With my present improvements, and Fig. 2 is a longitudinal sectional view thereof. Fig. 3 is a transverse sectional view on the line C C, Fig. 2, looking toward the left. Fig. 4 is a similar View to Fig. l, taken from the opposite side of the bevel-stock with'the position of the latter re-` versed end for end. Fig. 5 is a plan view ofn another form of stock for' the bevel or instrument which may be employed in some instances. Fig. 6 is also a plan view representing the preferred form or embodiment of my 5o invention, the blade of the instrument being shown in an adjusted position with reference to the stock and also broken ed at the outer end. Fig. 7 is a longitudinal sectional View of Fig. 6, and Fig. 8 is a transverse sectional View of Fig. 6 on the line A A. Fig. 9 is an 55 enlarged transverse sectional view of bevel-y stock employed in the preferred form or embodiment of device, said view being taken on `the line B B, Fig. 6.

With general reference to the present sub- 6o ject of inventions it may be stated that accuracy 0r precision of operation is the end, aim, and effect of a well-constructed bevel,l as is Well known, yet many devices of this kind as hitherto devised have failed of attainment of such quality, due either to the unrened character ofthe structure (especially in bevels made entirely of metal) or else to certain imperfections of organization of the parts or elements thereof. With a bevel the 7o Weight of the parts o'r elements constituting the same should be equally balanced or distributed throughout, since the successful ap-v plication of the device-inuse depends largely upon the stability thereof` and the steadiness with which it maybe handled.`

Asillustrative 0f my presentimprovements,

I have herein represented several forms or embodiments of a bevel possessing the qualities mentioned and also having other advan- 8o tages, as will hereinafter appear. I construct the stock of a metal casting hollowed out on opposite sides to a suitable depth, (the working faces thereof' being dressed or nished off in perfect alinement,) so as to leave a relatively thin and continuous Web extending parallel with the broader sides of the stock and by means of Which web the side portions (on which are the Working faces of the stock) of the stock are connected and maintained 9o in proper rigid relationship throughout their entire length. As thus constructed the outer surfaces of the Working or operative portions of the stock are finished. off smoothly and evenly, and for the purposes of integrity and strength of structure I make no otheraltervationkof the casting from its' original form,

but preserve the skin of the metal on all other surface portions thereof intact or unbroken, more especially on both sides of the' lo;

connecting-web refer-red to, as Well as at the inner angles of the stock, Where weak points are apt to exist. The particular location of the Web permits a kerf or slot for the adjustable blade of the device to be formed in the stock by means of a saw, for instance, Without requiring the saw to be passed through very much of the material of the stock and without removing any portion of the connecting-Web for the purpose. In this way the integrity of the structure of the stock is largely preserved, and there is no tendency to distortion thereof, as might otherwise result from displacement or removal of a large proportion of the metal thereof. The said kerf or slot is formed in the side portions of the stock slightly to one side of and in a plane substantially parallel with the web, and the movable or adjustable blade is so supported as to be capable of being moved in and out entirely free of the web, so as not to wear away any of the said skin thereof. I employ suitable means for securing the blade in positions of adjustment, said means including an operating-rod extendingr lengthwise of the device, and the parts are so constructed and organized as to give the best results in practice.

Reference being had to the accompanying drawings by the designating characters marked thereon, A, Figs. 1 to 4, inclusive, represents a bevel-stock embodying the essential features of my present improvements and which in some particulars is constructed substantially the same as the bevel-stock re-` ferred to in my pending application tiled September 6, 1901, Serial No. 74,496. Said stock is constructed of a single casting hollowed out on opposite sides, as at l and 2, so as to form a relatively thin and continuous web 3, connecting the side portions 4 4 of the stock, said side portions being dressed off or finished on their outer surfaces, so as to constitute the working faces of said stock.

The skin of metal formed ou the inner surfaces of the said side portions at the time of casting, as Well as that formed on the opposite surfaces of said web, is preserved un` broken or intact, and thus is rigidity and strength imparted to the structure, especially at the web and at the angles of intersection thereof with the said side portions. I form in the side portions, from one end of the stock, a kerf or slot 5 for the accommodation and working of the usual adjustable blade, the sides of said kerf or slot extending all the Way through said side portions parallel with the web and terminating a suitable distance from the opposite end of the latter. The kerf or slot is formed means of a saw or otherimplement, audit is apparentthat comparatively a small amount of metal is required to be cut through or removed in the formation thereof and also thatno part whateverof the said web 3 is removed for the purpose. As thus constructed any suitable means may be employed in connection with the stock for securing the blade in its different positions of adjustment; but preferably I construct the stock in a manner to receive substantially the means for that purpose hereinafterspecifically referred to in connection With the embo'diment of my improved bevel shown in Figs. 6 to 9, inclusive, such means being omitted in Figs. 1 to 4, inclusive, for the purpose of more clearly indicating the construction of the stock. Thus at one side of the open end of the kerf or slot 5 a boss 8 is formed on the stock, having therein atapped or threaded opening 9, adapted to receive the threaded portion of ascrew (such as hereinafter referred to) passing through the blade, and at the other side of the said kerf or slot the stock is formed with a circular portion 10, having a boss provided with an enlarged opening 11 for the reception of the enlarged head of the screw, said boss being notched or cut out at coincident points 12 and 13 for permitting the passage of the effective end of an operating-rod, such as is hereinafter referred to in connection with Figs. 6 and 7. At a point in line with the coincident notches 12 and 13 the said circular portion is formed or provided With a beveled or inclined surface 15, constituting an operative bearing-face for the said effective end of said rod, and in the opposite end portion of the stock of the bevel au opening 16 is formed, the sides of which constitute a bearing for the opposite end of the rod. In this particular embodiment of my improved bevel-stock the unremoved metal skin on the surfaces of the Web 3 and the inner surfaces of the side portions of the stock is indicated at 18 in Fig. 3, and in order to prevent wearing away of this metal skin, such as might occur by frictional or rubbing coutact of the movable blade with the adjacent surface of the web, I so construct the kerf or slot 5 that the inner Wall 2O thereof is projected from said web at either edge of the stock, s3 as to form raised bearing-surfaces for the blade at Whatever position the latter may be brought, said raised bearing-surfaces terminating at the open end of said kerf or slot in a similarly projected or raisedflush seat 2l for the blade, said seat being integral With the web and constituting practically the inner surface of the circular portion 1l of the stock hereinbefore referred to. It Will thus be seen that the blade will be prevented from contact with the web in effecting adjustments thereof and also that the raised bearing-surfaces and seat for the blade will prevent any deflection of the latter toward the web by accidental contact With external objects. With this particular embodiment of my improved bevelstocl; provision is made for the blade on one side of the central connecting-web 3, While on the oppositeside of the latter provision is also made for a rod for coperation with the connecting devices between the blade and stock, and it will be seen that said stock possesses integrity and strength while being light in weight and also that the same is not apt to bend or Warp in use, the alinement of the Working face thereof being unimpaired IOO IIO

even under comparatively great stressv which may be brought to bear thereon. v

Reference being had `to the preferred embodiment or form of my improved bevel, as shown in Figs. to 9, inclusive, it may be stated that one of the principal purposes of the construction and organization of the elements thereof is torobtain a still better balbevels or similar instruments hitherto devised. Thus I form the stock B in this instance of a suitable casting of metal, which is hollowed out from one of the broader sides thereof to a considerable depth, as indicated at m, while from the opposite broader side the said stock is hollowed out at n to a comparatively limited depth only, the sideportions4EL 4u of the stock being connected, as in Figs. l to 4, inclusive, by means of a similar relatively thin and practically continuous web 3a, on both surfaces of which is retained the metal skin 18, formed thereon at the time of casting of the stock. In" like manner the metal skin on the inner surfaces of the side portions 4a 4a at each side of the web, as well as that at the inner angles o of intersection of said side portions with said Web, is also retained, as shown, so that the strength and rigidity of the structureare both. increased to a marked degree. In this embodiment of my invention I construct the kerf or slot V5a in the same manner as hereinbefore explained with reference to the structure shown in Figs. l to 4, and I also provide similar raised parallel bearing-surfaces 20a. 20a for the adjustable blade D, as Well as a similar Iiush or raised seat 2l for -said blade, the purpose of said raised surfaces and seat being the same as in the first embodiment. hAt the solidend of the stock corresponding to the open end 30, Fig. 7, of the kerf or slot 5a I form a tapped or threaded opening 3l in the portion 32, which is considerably less in depth or thickness 'than the portion 33 on the opposite side of said kerf or slot, the said tapped or threaded opening being for the reception of the threaded portion 34 ofa screw having an enlarged head 35, received in an enlarged circular opening 36 therefor, formed in the said solid portion 33 of the stock, the said screwhead having .therethrough a transverse threaded opening 37, in which works the threaded portions of an operating-rod E, eX- tending vthe full length of the stock between the side portions thereof of greatest depth, said rod having bearings in an opening 38 immediately adjacent to and coincident with the opening 37 in thescrewfhead, and a similar coinciding opening 39, formed in the opposite solid end portion 40 of the stock. The end 4l of the rod projects beyond the screwhead and is conical or tapered in correspondence with the beveled or inclined surface portion 42, formed on the stock in line withv the opening on said screw-head, said conicaLor tapered end of the rod being made to ride upon said vbeveled or inclined surface on proper manipulation of saidrod to draw the divided portions of the stock together to tightly bear upon the sides ofthe blade, and' thereby secure the latter to any positionto which it may be brought or adjusted. In the present embodiment of my invention I dispense with the notch 12 of Figs. l to 4, the side of the enlarged opening 36 in the end ot' the stock being closed at such point to furnish an increased'lateral bearing for the said screw-head to butt against',whereby the screw itself is not apt to becomebent or distorted,

and less strain is imposed upon the threads thereof. I may employ abridge 45, connecting the side portions 4L 4a acrosstheh'ollowedvoutside of the stock of greatest depth,.in

pensed with in most instances. It Willbe seen t from this embodiment of myinvention that in Virtue of the particular location of the operat-v ing-rod with reference to the blade ofthe inf IOO greatadvantage derivedvin this class ofdevices. 4Ihe construction and organization of the several elements of the device are also such that maximum Wear and` great integrityof structure are obtained,giving to the device the capacity or quality of accuracygandprecision,/

of Working. By making the stock of greater depth orthickness onrone side of the blade than onl the other I am enabled to ,appl-ythe device for setting od bevels fromstraight lines forming other than right angles with the surface on which the blade of the instrument is laid for marking, While that part of the said stock of least thickness or depth enables the device to beapplied to objects of compara- 1 tively limited depth. It is apparent thatI am not restricted to the precise details of conp struction and organization of elements herein illustrated and described, since variations therefrom may be made and still be Within the scope of my invention.

Having described my invention, I claim- 1. A bevel-stock constructed of a metal castv ing hollowed out at the sides and comprising a relatively thin connecting-web between the side portions on which are formed theworking faces of the stock, said sideportions having a kerf for a kblade formed thereinwith the Walls of thekerf in planes outside of Vand parallel with the surfacesof said connectingweb, said kerf extending all the Way through `said side portions and being open at one end of the stock.

2. A bevel-stock constructed With side portions or working faces and an integral substantially continuous and relatively thin connecting-Web, said side portions being formed therein with a kerf for ablade with the Walls of the kerf in planes outside of and parallel with the surfaces of said connecting-Web, said kerf extending all the way through said side portionsanrl beingopen at one endofthe stock.

3. A bevel-stock constructed of a metal casting hollowed out at the sides and comprising a relatively thin connecting-Web between the side portions on which are formed the Working faces of the stock, said side portions having a kerf for a blade formed therein With the Walls of the kerf in planes outside of and parallel With the Web, the surfaces of said Web and the innersurfaces ofthe side portions having thereon a skin of metal.

4. A bevel-stock constructed with side portions or Working faces and an integral connecting-Web, said side portions having a kerf' for a blade form ed therein With the surface of both walls of the kerf in a plane outside of and substantially parallel with the web.

5. Abevel-stock constructed ofametal casting having side portions or Working faces, and an intermediate relatively thin connecting-Web located nearer one surface of the stock than the other, the partsof said side portions of greatest depth having a kerf for a blade formed therein with the Walls of the kerf outside of and in planes parallel with said web, said kerf being open at one end of the stock.

G. AbeVel-stock constructed of a metal casting having side portions or Working faces, and an intermediate relatively thin connecting-Web'located nearer to one surface of the stock than the other, the parts of the side portions of greatest depth having a kerf for a blade formed therein With the Walls of the kerf outside of and in planes parallel with said web, and the surfaces of said web and the innersurfaces of said side portions having thereon a skin of metal, and said kerf being open at one end of the stock.

7. A bevel-stock constructed at one end for the reception of connecting devices for a blade, and having side portions or Working faces, and an intermediate connecting-web located nearer one surface of the stock than the other, the parts of said side portions of greatest depth having a kerf formed therein with the Walls of the kerf outside of and in planes parallel with said web, and the end portions of the stock being formed beyond the kerf With bearings for a rod, said kerf being open at one end of the stock.

8. A bevel-stock constructed of a metal casting adapted at one end for the reception of connecting devices for a blade,and having side portions or working faces, and an intermediate connecting-web located nearer one surface of the stock than the other, the parts of said side portions of greatest depth havinga kerf formed therein with the Walls of the kerf outside of and in planes parallel with said web, and the end portions of the stock being formed beyond the kerf With bearings for a rod, the surfaces of the web and the inner surfaces of said side portions having thereon a skin of metal retained thereon, and the kerf being open at one end of the stock.

9. A bevel comprising a stock having side portions or Working surfaces, and a relatively thin connecting-Web therefor located nearer one surface of the stock than the other, a movable blade working in a plane to one side of the web, securing devices for said blade comprising an inclined surface on the stock and a screw having a head with a transverse opening thereon, and a rodcoperating with said devices located in bearings in the stock therefor on the same side of the web as the blade.

CHRISTIAN BODMER. Witnesses:

EBEN STRONG, FRANK L. TRAUT.

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