US2634775A - Chisel type blade for carving tools - Google Patents

Description

April 1953 P. H. EJNSINGER 2,634,775

CHISEL TYPE BLADE FOR CARVING TOOLS Filed July 5, 1947 IN VEN TOR.

Patented Apr. 14, 1953 CHISEL TYPE.- BLADE FOR. CARV-ING TOOLS;

Philip H. Unsinger; Fremont; Ohio, assi'gnor to Unsinger. AP" Corporation, Fremont} Ohio; 2-

corporation; of. Ohio Applicationolilly 1947, S'erIaIANoL'JSQJGB 2 Claims;- Cl. 1451-4 4')'* This inventionrelatestocarvingtools and more especially to tools of: the gouge and corner chisel types for performing grooving and carving operations in woodwork or similar materials; The invention embraces the provision of" carving toolsof the chisel type that may be interchangeably inserted-in a suitable holder and which are especially adapted for hobby-craft work; model building, and thelike.

The invention further embracesthe provision of a chisel or carving'tool formedof a singlestrip of metal which isconfigurated to provide a chan-- nel-shaped operative portion and a shankportion for-med Witha rib acting as a reinforcement means Another object of'the invention is the provision of carving tools formed with shank portions which areof a shape andsize to beused interchangeably with a holder, the-tools being of a character that may be fashioned with various shapes of cutting configurations for performing many kinds of grooving or carving operations.

A' further object ofthe invention resides in the provision of means associated with a carving'tool for deflecting or diverting the cuttings away from the holder.

Still anotherobject of the invention is theprovision of carving tools which may bemade and formed from sheet metal whereby the cost of producing the tools is reduced toaminimum.

Further objectsand advantages are within the scope of this inventionsuch as relate to the arrangement, operation: and function of the related elements'of the structure; to. various details of construction and to combinations of parts, elements per se, and to economies.- of manufacture, and numerous other features. as. will be apparent from a consideration of: the specification and, drawing of a form of the invention, which may be preferred, in which:

Figure 1 is an isometric view-cf a formof tool holderadapted to support tools made in accordance; with my invention;

Figure 2is a side elevational view illustrating one form of chisel or carving tool of my invention;

Figure 3 isa top plan view of the carving tool shown in Figure 2;

Figure 4 is a front end view of the carving'tool illustrated in Figure 2;

Figure'5 is a rear view of the carving-toolshow-n in Figure 2;

Figure 6 is an isometric-view illustrating another'iorm of carving tool of myinvention show ing' the'same positioned in the chuck of a:- tool holder;

Figure 7 is a front end, view of the. tool illustratedin Figure 6;

Figure 8 is an elevational view of thecarving tra-ting another formof" carving tool of my invention;

Figure 11' isavertical sectional viewitakem substantially ontheline i l-41 ofFigure 1 0;

Figure 1' 2 a longitudinal sectional view show ing' a further form of carving-tool of my inven-- tion, and

Figure 1'3v is. a transverse sectionalview taken substantially onthe line l=3-| 3' of Figure 12.

While I have-illustrated-the forms ofmy invention as embodied in' chisels or gougesefor producing \fi-shaped or curved configurations in cross section, it isto be understoodthat tools embodying the principles of my" invention may be formed" in various: shapes toproduce other types of" grooving without departing from" the spirit of the invention.

Referringrto the 1 drawings in: detail and first to Figure. l, I have illustrated a holder--- adaptable. for supporting: the. tools of my inventiom The holdersis inclusive: of; a. body portion 1 0? adapted to slidably' receive: a button or: knob portion; I2;

The opposite end of thexbody I0: is: knurledt as: at-

I 4-, this end: of:theholder: being: provided with an:

interiorly: threaded bore: adapted. to receive: the, threaded portion: l6; of a: chuckimember lsl'. The v chuckimember; I l is :iorm'ed'lwith acentrally: distposed kerf'orslot: l8jforming-chuckjaws 24 an axialv bore: I 9; and; transversely disposed; recesses: 20, the latter beingemployediorrtheereception' off other forms of tools than those herein disclosed.v Theichuck member III is provided:with'aatapered: orfrusto-conicall3tshapedLportioniZ. Abushing.

23- surrounds theintermediate portion of: the

chuck member I1: and; has anaout'wardly" flared interiorconfiguration. co-v-extensively' arranged Wi'E-hlthe: tapered portion 22 so thatxwhen: the; portion-: 15:. of the: chuck: member: is; threaded into: the bore in: the; handle;- l0; thgfiared portion. of

bushing 23; cooperates with thevtaperedl portion:

is adapted to carve or cut V-shaped grooves? in":-

woodwork. In this form the body of the tool is of V-shaped cross section as indicated in Figure 4 and is sharpened to a cutting edge 26 by the tapered extremity 21. As particularly shown in Figures 2 and 5, the carving tool is formed with a shank portion 28 provided with two uniplanar spaced sections 29 which are joined through a longitudinally extendingrib or raised portion 30, the latter not only serving to reinforce the shank construction 28 but also functions as a positioning means when the tool is placed in the chuck I! of the holder. The body portion 25 of the tool and the shank portion 30 are joined together through an angularly disposed configuration 3| which blends the body section to the shank section asespecially shown in Figures 2 and 3. Thus the rib formation 30 is, in eifect, a prolongation of the body section providing a section having ample strength at the juncture of the shank and body portions.

Figures 6 and 7 illustrate a modified form of carving tool of the round gouge type in which the body portion 34 is configurated to a substantially semi-circular cutting edge 35 at one end and formed with a shank portion 31 at the other end portion. The shank portion 31 is of a configuration I substantially identical with that formed on the tool construction shown in Figures 2 and 3. The shank portion 31 is received in the jaws 24 of the tool holder as illustrated in Figure 6, the construction shown in Figures 2 through 5 inclusive being adapted to be held in the jaws of the holder in the same manner. The rib or ridge portion 39 is received into a longitudinally extending opening or recess i9 formed in' a jaw 24 of the chuck I1, and the rib and walls of such recess cooperate to properly position the gouge or carver in the tool holder and prevent lateral relative movement of the tool with respect to the holder. When the chuck member I! is threaded into the handle portion ll] of the tool holder, the chuck jaws 24 are urged toward one another into engagement with the uniplanar portions 40 of the tool shank 31 to prevent vertical movement of the tool with respect to the holder.

I have found that in the use of carving tools or gouges with certain types of wood, the cuttings or chips tend to follow the concave or channeled interior formation of the tool to the entrance of opening IS in the upper jaw 24 of the tool holding chuckand also tend to accumulate adjacent the chuck jaws. projection of chips or cuttings intothe recess in the upper jaw 24, or their accumulation adjacent the chuck jaws, means are provided for diverting the chips from the carving tool channel and away from the chuck jaws. As shown in Figure 8, this means is in the form of a rod or bar 43 preferably of circular cross section and tapered at its outer end as shown at 44 to provide a point or apex 45 adapted to lie in the bight or central portion of the channel of the tool configuration. The apex 45 terminates a short distance from the extremity of the body of the tool 25 as illustrated in Figure 8. In the use of this arrangement, the cuttings or chips made by the cutting edge of the tool will be diverted by the tapered portion 44 of the rod in a direction away from the chuck jaws 24.

As shown in Figure 9, the rod 43 may be utilized as an awl, prick punch or the like by inserting the same in a bushing or sleeve 41 of a dimension to he received in the recesses l9 formed in the chuck iew M-M;

In order to avoid the Figures 10 and 11 illustrate a means integrally formed in the tool configuration for diverting chips and cuttings away from the tool supporting chuck. In this construction, the tool body 25' is formed adjacent its juncture with the shank 28 with an angularly disposed or canted portion 49. The raised portion 49 is formed centrally of the tool, as shown in Figure 11, and serves to deflect chips or cuttings upwardly or laterally and away from the chuck jaws of the tool holder.

Another modification of means for diverting chips or cuttings away from the holder is illustrated in Figures 12 and 13. In this form of tool, an impediment to the passage of the chips or cuttings is placed in the bight portion of the carving tool configuration 25". I have found that the deposition of a small amount of solder or other fiuxable metal or alloy 50 in the channel configuration provides a satisfactory means of accomplishing the desired result. In the use of this form of tool, the cuttings or chips, being moved along the interior of the channel configuration, engage the impediment or abutment j 50 and are deflected upwardly or laterally so that they will not accumulate in or in front of the jaws of the tool holder. The composition comprising the abutment 50 may be applied by the use of a suitable soldering or brazing fiux to cause it to adhere to the carving tool.

through the use of suitable forming dies so that the tools may be made in large quantities at a low cost.

While I have illustrated my invention as embodied in carving tools of the corner chisel and round gouge type, it is to be understood that my invention may be embodied in tools of different cross sectional configuration following the principles of construction of the present invention.

It is apparent that, within the scope of the invention, modifications and different arrangements may be made other than is herein disclosed, and the present disclosure is illustrative merely, the invention comprehending all variations thereof.

What I claim is: I

1. A cutting tool comprising an elongated member formed of a single strip of sheet metal, said member being formed with a body portion, an intermediate portion and a shank portion, said body portion being of nonuniplanar configuration in cross-section and angularly disposed with respect to said mid-portion and having a mid section extending below the plane of its edges and the extremity of said body portion being configured to present a cutting edge; said shank portion being formed of a planar surface having a reinforcing ribrunning the full length of said surface and extending below the plane of said surface in a direction similar to that of said center section, said shank portion being angularly disposed with respect to said intermediate portion and offset With respect to said body portion, said rib terminating at the angular juncture of said shank and intermediate portion.

2. A cutting tool comprising an elongated member formed of a single strip of sheet metal having parallel lateral edges, said member being formed with a body portion, an intermediate portion and a shank portion, said portions having as their lateral edges, the lateral edges of said single strip of sheet metal, said body portion being of nonuniplanar configuration in cross-section and angularly disposed with respect to said mid-portion and having a mid-section extending below the plane of its edges and the extremity of said body portion being configured to present 5 a cutting edge; said shank portion being formed of a planar surface having a reinforcing rib running the full length of said surface and extending below the plane of said surface in a direction similar to that of said center section, said shank portion being angularly disposed with respect to said intermediate portion and offset with respect to said body portion, said rib terminating at the angular juncture of said shank and intermediate portion.

PHILIP H. UNSINGER.

6 References Cited in the file of this patent UNITED STATES PATENTS Number 15 Number Name Date Parmelee Sept. 3, 1878 Glardon-Jacquet Apr. 4, 1899 Hansson Dec. 9, 1902 McLeod May 3, 1904 Gonyea Sept. 25, 1906 Payer Oct. 6, 1931 Grumbacher Aug. 6, 1935 Walker Dec. 31, 1935 Bartol May 26, 1936 FOREIGN PATENTS Country Date Norway June 15, 1923 Great Britain Aug. 10, 1938

Images