US676053A - Chisel. - Google Patents

Description

No. 676.053. Patented lune Il, I90l. M. SPORLEDER.

CHISEL.

(Application led Def:4 24, 1900 (No Model.) 3 Sheets-Sheet I,

Patented lune Il, |90I. M. SPURLEDER.

No. 676,053. Patented lune Il, I90l. M. SPURLEDER.

CHISEL.

(Application filed Dec. 24, 1900 (No Model.) 3 Sheets-Sheet 3.

@T6/diaet? QpMee/a, 190mm l l f l vzhfargeys UNITED STATES PATENT OEEICE.

MICHAEL SPORLEDER, OF COLORADO CITY, COLORADO, ASSIGNOR OF ONE- IIALF TO THOMAS M. MAI'ION, OF SAME PLACE.

CHISEL.

SPECIFICATION forming part of Letters Patent N o. 676,053, dated June 1 1, 1901. Application filed December 24,1900 Serial No.4(),967. (No model.)

T @ZZ whom, t may concern:

Be it known that I, MICHAEL SPORLEDEE, a citizen of the United States, residing at Colorado City, in the county of El Paso and State of Colorado, have invented a new and useful Chisel, of which the following is a specification.

This invention relates to a plug-cutting chisel for use in general carpentry, car-buildlo ing, and other work to which it may be applicable; and the object of the same is to provide a tool that will readily cut or form a recess to receive the head of a screw, nail, bolt, or the like and preserve the removed plug of x5 Wood intact in the tool or form it by a separate tool and reset it in the recess to make a flush fitting with the body or remaining portion of the material operated upon and fully cover and conceal the head of the screw, nail, 2o bolt, or the like in a more durable and satisfactory manner than by the ordinary filling operation with putty or other similar substance.

The invention consists in the construction and arrangement of the several parts, which will be more fully hereinafter described and claimed.

In the drawings, Figure 1 is a transverse vertical section of a tool or chisel and a portion of the handle therefor embodying the 3o features of the invention. Fig. 2 is an elevation of the parts shown by Fig. l. Fig. 3 is a transverse vertical section of a portion of the improved device, showing a slight modification. Fig. -f is a transverse vertical section of the lower extremity of the improved device, showing a further modification wherein a single cutter is employed. Fig. 5 is a transverse vertical section of a further-modified form of the improved device, showing a 4o double reversible construction. Fig. 6 is a sectional elevation of a device similar to that shown by Fig. 5 and embodying a further modification in the construction shown by the latter figure. Fig. 7 is a detail perspective view of one of the plunger pressureheads used in the two forms shown by Figs. 5 and (5. Fig. 8 is a sectional elevation of a further-modified and simple form of the improved device embodying the same principle 5o of operation. Fig. 9 is a horizontal section taken in the plane of the line 9 9, Fig. 8. Fig.

10 is a transverse vertical section of the form of the device shown by Fig. 8, showing a further modification. Fig. 11 is a transverse vertical section of the improved device,shoW 55 ing a still further modification. Fig. 12 is a horizontal section taken in the plane of the line 12 12, Fig. 1l.

Similar numerals of reference are employed to indicate corresponding parts in the several 6o views.

The numeral l, Figs. 1 and 2, designates a stock having an upper downwardly-converged socket 2 in which is fitted a chisel or other tooth handle. The precise form of the socket and the handle is not essential to the practical operation of the invention; but the forms shown are believed to be the simplest. The stock has a bore 3 extending therethrough and has its lower extremity flared outwardly 7o to form an upwardly-converged seat 4, to frictionally receive a reversible cutter 5, having an intermediate body portion 6 of a diameter equal to the maximum diameter of the said seat, and from said body the cutter tapers toward opposite ends to provide opposite engaging portions 7 to fit into the said seat and capable of removal from the latter. At opposite extremities of the cutter are tubular cutting- terminals 8 and 9, the termi- 8o nal 8 being larger in diameter than the terminal 9. The said terminals both have straight bores 10 and ll extending therefrom and communicate at an intermediate point and provide an opening entirely through the cutter, the bore 10 having a diametrieal extent approximately equal to the outside diameter of the terminal 9, so that a plug cut by the terminal S will snugly fit and fill a recess formed by the terminal 9. In the upper 9c portion of the bore of the stock is a presser 12, having a cylindrical body 13,With a screwsocket 14 extending longitudinally thereof, and an upper convex head 15, forming ashoulder in relation to said body. Surrounding the body 13, between a shoulder 16 of the bore of the stock and the said head l5, is a spring 17, which operates to hold the presser at an elevated position in accordance with a preliminary adjustment and to always return loo said presser to its normal position when the latter is freed of applied force. In the socket l-t the upper enlarged screw-threaded end 1S of a plunger l0 is adjustably mounted and extends through the bores 10 and 1l of the cutter 5, the adjustment ot the plunger being such that when a full downward stroke thereof has terminated the lower end will be in direct alincment with the surrounding cutting edge of either one of the tubular cuttingterminals 8 or 9 and in accordance with the arrangement of the said terminals in relation to the stock. A lever 2t) extends transversely through suitable slots 2l and 22 in the stock, above the inner shoulder 1G of the latter, the said lever being fulcrumed at one end in the slot 22 and freely movable in the other slot 2l. The lever 20 intermediately bears on the head l5 ot the presser, and by exerting a down ward force thereon the said presser and plunger carried thereby will be driven downwardly for expelling a plug against the action of the spring 17, and as soon as the lever is released the parts will be automatically returned to normal position. The stock is also formed with an aperture 23 to give access t0 theinterior thereof for the insertion of a suitable implement to start the cutter in the event that it sticks, and the terminals 8 and 9 can be exteriorly shouldered, as shown, to control the depth of penetration of the same. the degree of penetration being changeable at will to suit different classes ot work or in proportion to the general dimensions of the cutter as an entirety.

The modiiied form of the device shown by Fig. 3 is in all respects and details similar to the tool just described, except that only one slot 24 is formed in the upper portion ot' the stock and the operating-lever 25 is intermediately fulcrumed in said slot and has its inner extremity bearing on the head of the presser, so that the latter and the plunger connected thereto may be pressed downwardly by an upward pull on the lever.

The modification shown by Fig. t will have the same features in generalot the forms herctofore set forth, except that the cutter 2G has a single tubularcutting-terminal27, and illustrating the intent to also have a tool or chisel of the class described wherein one stock will be supplied with a plurality ot cutters having cutting-terminals of different dimensions and one easily substituted for another in forming recesses having different sizes, the cuttingterminals of the several cutters being graded in accordance with a scale of measurement. The terms illustrated by Figs. 5 and 0 embody the same principle, that disclosed by Fig. G being a slight modilication et the construction shown by Fig. 5. In this instance the stoel; 1 has an Opening 2S therein near its lower end and has thereon a catch-spring 2f), with an inwardly-deflected lower end 30 freely movable through the said opening; but in other respects the structure of the said stoel; is the same as that heretofore set forth, except that it is flared toward its lower end. In the said stock a reversible holder 3l is removably held and has opposite terminal-engaging portions 32, which are tapered correspondingly to and adapted to frictionally tit in the lower eX- tremity of the stock, and as an additional means ot securement and safeguard against accidental disengagement of the holder from the stock each tapered portion is formed with shouldered recesses 323 to receive the inwardly-deflected lower end 30 ot the catchspring 25). The holder has a bore 3i extending longitudinallyv therethrough and formed with terminal flares 35 to frictionally receive the tapered head ends 3G of cutters 37 and 38, having tubular cutting-terminals 3.() and 40, which have the same proportionate relation as to size as the cutting-terminals shown by Fig. l and for precisely the same purpose. 'l`he bores of the cutters extend completely therethrough, and in each cutter a plunger 41 is movably mounted and of a dimension proportionate thereto. The inner extremities et the plungers are formed with screw-threads 42 and adjustably itted in screw-threaded sockets -tf ot pressers it, between which and the inner ends ot` the cutters springs t5 are located and surround the plungers in a free manner. lt will he understood that the springs operate to retract the plungers to normal iudrawn position in the holder, and the inner opposed ends ot the pressers t4 are convexed and have projected between them and in contact therewith the broadened end or extremity 46 ot' an operating-lever i7, [ulcrumed at one side of the holder and extended outwardly far enough to provide a convenient grip for operating the lever. The lever is 0perated by an upward pull to force either of the plungers downwardly into expelling position, and to accommodate the operation thereof the holder has a slot i8 formed therein, which is dared toward one side. As shown hy Fig. t5, the recesses are termed by circumterentially grooving the holder, so that an engagement with the catch-spring can be obtained at any circumferential peint without requiring a precise disposition of the parts to accomplish this end. When it is desired to separate the engaged end of the holder, the catch-spring is drawn outwardly to release the lower deflected end thereof from the adjacent recess. Thc construction shown by Fig. t3 embodies a single form ot presser 49 ot elongated form, having the inner screwthreaded ends of the plungers adj ustably attached to the opposite extremities thereof, and through a slot 50 in the said presser the lever, similar to the lever i7, extends and has operative contact with the upper and lower centrally-extending or curved end walls 5l. The operation ot this modified device is in all respects similar to that shown by Fig. 5.

Figs. 8 and show a simpliiied form of a device embodying the saine principle, and in this instance the stock 52 is ot elongated form and has a iowerterminal lateral deflection 53, having a seat-opening 5t vertically disposed therein and flaring toward its lower portion.

Removably mounted in the said seat is a cutter 55, similar to that shown by Fig. 5, and in said cutter a plunger 56 is loosely mounted and is provided with an elongated slot 57, through which extends a pin 58 to prevent separation of the plunger from the cutter, but permits free movement of the plunger downwardly to a complete operative position.

The upper end of the plunger is provided with a head 58 to receive the blow or impact of a hammer or other implement to dislodge the plug from the cutter-terminal. The form shown by Fig. l0 is similar to that shown by Figs. 8 and 9; but the plunger 59 is formed with an elongated elliptical slot G0 to provide laterally-projecting spring' members (3l to frictionally bear on the bore of the cutter and prevent too loose movement of the plunger in the latter, but easily operated to perform its expelling operation by a blow or pressure delivered or applied to the head end thereof.

The form of the improved device shown by Figs. ll and l2 embodies means of a modied nature for operating the plunger 62, the remaining parts being the same as those heretofore described, except that the stock is provided with an upper vertically-disposed slot 63. On the upper screw-threaded end G4 of the plunger a laterally-projecting head G5 is adjustably mounted and moves in and is extended through and beyond the outer margin of the slot 63, so that it can be struck or pressed downwardly against the action or resistance of a coiled spring 6G, surrounding the plunger andinterposed between the inner end of the cutter and the lower face of the head 65.

In all the forms of the device set forth the tubular cutting-terminals can be sharpened from the outside and inside, one mode being preferable in some constructions and the other mode in the remaining constructions. It will be obvious, however, that the operation of sharpening will be preferably carried on from the exterior or on the exterior surfaces of the tubular cutting-terminals, and the several forms of adjustment for the plungers are to compensate for the shortening of the tubular cutting extremities of the cutters and always maintain the same relation between the cutters and the plungers and to have the said plungers move through the cutters to such an extent as to fully expel the plug, particularly when returning the plugs to the recesses as fillings therefor.

The salient features and advantages derived from the present construction of device and its various modifications are that when the plug is cut by any one of the same it is compressed and can be retained in the cutter ready for resetting in the recess and accurately positioned in the latter by expelling the same regularly by means of the plunger to `form a flush surface with the material in which the nail, screw, bolt, or the like has been placed and countersunk through the medium of the recess formed. Thus the grain of the wood can be better continued to receive a polish or finish on the exterior and have the points of introduction of the said fastening devices less apparent from the exterior and a more durable than putty or analogous filling material ordinarily used. Another advantage is that therecess may be formed by one tool and the plug cut from a separate piece of material of a similar nature by another tool of complementary dimensions to accurately fit in the said recess. Another advantage is the ease of removing and substituting different tools or of quickly bringing tools of different dimensions into operative position in the same stock to accommodate different sizes of fasteningheads embedded in the recesses formed. The comparative simplicity of the several devices is also essentially important, not only fromastaudpoint of economical manufacture, but also from the important consideration of expeditiously accomplishing the work. Instead of having the cutters frictionally engage the stock or holder terminals the correlative engaging surfaces may be formed with screw-threads, or other separable means of connection with a similarend in view may be adopted. In addition to the modifications fully disclosed further changes in the proportions, size, form, and minor details may bc resorted to without departing from the principlc of the invention.

In the use of the single cutter heretofore set forth in common work the recess for the plug is made by the nail-head when driven under the surface or can be made uniform by the nail set employed in countersinking the nail-head, and the cutter in this instance is adapted to form the plugs to lill the recesses where a number of nails are driven.

Having thus described the invention, what is claimed as new is- 1. The combination with a stock, of multiple cutters adapted to be mounted in changeable relation to the lower extremity of the stock for forming a recess adapted tohave a removable plug compressed into one expelled therefrom into a recess made by the other, the outer surface of the cutting-terminal of the cutter being beveled, and a plunger wholly inclosed within the stock and movable through the cutters.

2. A chisel of the class described having a reversible cutter with tubular extremities of different diameters and adapted to have a plug cut by one of the latter compressed and retained therein, and a plunger movable through said tubular extremities for expelling said plug and causing it to fit a recess of a corresponding size formed by the other extremity of the cutter as a filling for the said recess.

3. A tool comprising a portable stock,tubu lar cutting devices mounted in changeable relation to one extremity thereof, and a single plunger carried by the stock for operation through either of the cutting devices, the cut- IOO IIO

ting ends of said devices having different diameters.

4. A tool comprising a stock, a reversible cutter having tubular cutting-terminals, and an adjustable plunger movable in the said terminals.

5. A tool comprising a portable stock, a holder reversibly mounted in said stock, tubular cutters removably mounted in the opposite extremities of the holder, and a single plunger to operate as an expelling means for both cutters.

6. A tool comprising a portable stock, a holder, reversibly mounted in said stock, tubular cutters removably mounted in the opposite extremities of the holder, the cuttingterminal of one cutter having an inside diameter equal to the outside diameter of the other, and a single plunger to operate as an expelling means for both cutters.

7. A tool comprising a stock, a tubular cutter mounted in said stock, an expelling device for cooperation with said cutter, and a presser to receive the operating pressure for the plunger to which the latter is adjustably connected, said expelling device and presser being within the stock.

8. A tool comprising a stock, a tubular cutter therein, a plunger movably mounted in relation to the cutter, a presser adjustably connected to the plunger,said plunger and presser being inclosed Within the stock and a lever for engaging the presser.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two Witnesses.

MICHAEL SPORLEDER.

\Vitnesses:

CHAs. L. CUNNINGHAM, E. ANTHONY BoTT.

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