US2220248A

US2220248A - Tool holder

Info

Publication number: US2220248A
Application number: US222980A
Authority: US
Inventors: John G Kolb
Original assignee: HOWARD HUNT PEN CO C
Current assignee: C HOWARD HUNT PEN Co; HOWARD HUNT PEN CO C
Priority date: 1938-08-04
Filing date: 1938-08-04
Publication date: 1940-11-05
Anticipated expiration: 1957-11-05

Description

Patented Nov. 5, 1940 UNITED STATES PATENT orifice TOOL HOLDER poration of/New Jersey Application August 4', 1938, Serial No. 222,980-

3 Claims.

This invention relates to an improvement in tool holder and more particularly relates to an improved form of' holder for small cutting tools, such as are used in the carving of soft wood, linoleum and the like.

It is the object of this invention to provide a novel form of tool holder more particularly adapted for holding tools the shanks of which have a form similar to that of the shanks of pen points. More particularly, this invention has as objects the provision of a tool holder which will be so constructed as to firmly and rigidly hold the shank of a tool and, at the same time, permit easy removal of the tool or of the shank if the tool be broken off.

Generally speaking, the tool holder in accordance with this invention will comprise a handle member having inserted at one end a bushing serving to support a floating pin member, which will define an annular recess within the bushing for the reception of the shank of the tool. More specically, the bushing will be provided with an internal annular ange which will serve at once as a retainer for the floating pin member and as a stop for the end of the shank of the tool. The tool will be held in the holder by dis-placement of the floating pin member, for engagement of the tool against the inside of the bushing, through the medium of a set screw.

Having generally indicated the nature and purpose of this invention, I will now proceed to a detailed description of a preferred embodiment thereof with reference to the accompanying drawing in which:

Figure 1 is a side view of a tool holder in accordance with this invention with a tool in place.

Figure 2 is a fragmentary cross-sectional view of the subject of Figure 1.

Figure 3 is a view imilar to that of Figure 2 with the tool in place.

Figure 4 is a cross-sectional view on the line 4 4, Figure 2.

Referring now to the several iigures, a indicates a handle, which may be made of wood or other suitable material and which may have the conformation as shown in Figure 1, or other desired conformation. h indicates a cutting tool, as, for example, a V-shaped gouge such as is used for the cutting of linoleurn.

Set in a bore c extending into the handle a from its forward end is a bushing d, which may be made of any suitable metal. The bushing d is provided with an internal annular flange e spaced substantially from its forward end and with an external ,annular iiange` f, which bears against the forward end of the handle a.

The external diameter of the bushing d is such that it lits snugly within the bore c in the end of handle a. Thus, the bushing d may be a driving fit in the bore c.

Within the bushing d is a pin y having a head h. The head h of the pin is loosely conned between the inner edge of the ange e and a flange formed by crimping the rear end of the bushing as shown at z'. The body of the pin g extends to theV forward end of the bushing and with the internal wall of the bushing defines an annular space y fo-r the reception of the shank Ic of the tool b, which, it will be noted, on entering into the annular space will be stopped by contact with the outer surface of flange e.

A set screw Z extends through a threaded opening in the flange f on the forward end of the bushing and is adapted, on being screwed down, to displace the pin g laterally to clamp the shank 7c of the tool b against the inner wall of th bushing.

It is believed from the above description, that the use of the tool holder in accordance with this 25 invention will be understood. However, it will be noted thatin use the shank of a tool, as the shank 1c of tool hr and which is curved similarly to the shank of a pen point, is inserted in the annular space between the pin g and the inner wall of the bushing d, generally opposite to the set screw Z. On insertion of the shank 7c of the tool b, the shank when fully inserted will be stopped by the ange e. The tool will be secured by screwing in the set screw Z, which will act to displace the pin g laterally so as to clamp the shank 7c of the tool against the wall of the bushing, all as clearly shown in Figures 2 and 3.

It will lbe noted in particular that the pin g is not fixed but floats in the bushing, being re-y tained therein by the positioning of the head h between the flange e and the crimping z' at the inner end of the bushing. The space between the flange e and the crimping i is substantially larger than the head of the pin and the pin g passes freely through the opening defined by the flange e so that the pin is loose or oating in the bushing. When the set screw is screwed in to secure the tool, the p'in g is readily displaced to clamp the shank of the tool. When it is desired to remove the tool, the set screw is screwed out, the pin g is free to float and the shank of the tool is readily removed. likewise, if the tool be broken 'off short, the shank may be readily removed by screwing out the set screw, thus freeing the pin, which readily frees the shank. It is to be noted that the shank cannot become stuck inasmuch as the annular opening :i is entirely clear and the shank cannot extend into the bushing beyond the outer edge of the annular flange e, which serves as a stop.

It is not intended that this invention shall be limited to the details of the disclosure, which are given for the purposey of illustration, inasmuch as it Will be understood that various modication in detail over the specific disclosure may be made without departing from the scope of this invention.

What I claim and desire to protect by Letters Patent is:

1. A tool holder comprising a handle member, a bore extending Within the handle member from one end, a bushing within said bore, a pin extending axially Within the bore and normally forming an annular space between its outer surface and the edge of the bushing means for securing said pin loosely Within the bushing so that the pin may be moved into engagement with the edge of the bushing substantially without exion and means engaging the pin and adapted to move it out of alignment within the bushing.

2. A tool holder comprising a handle member, a bore extending within the handle member from one end, a bushing Within said bore, a pin extending axially Within the bore and normally forming an annular space between its outer surface and the edge of the bushing, an annular ange on the internal Wall of said bushing means including said annular flange for securing said pin loosely within the bushing so that the pin may be moved into engagement with the edge of the bushing substantially Without iiexion, and means engaging the pin and adapted to move it out of alignment within the bushing.

3. A tool holder comprising a handle member, a bore extending Within the handle member from one end, a bushing extending within said bore, lan internal flange on the inner Wall of said bushing, a pin extending Within said bushing, a head on the pin, said head being loosely confined within the bushing by said internal flange whereby said pin can float therein and a. set screw threaded intosaid bushing and adapted to bear on said pin.

JOHN G. KOLB.