US1080963A - Paper file-handle. - Google Patents

Description

K. A. 0. FRINDT.

PAPER FILE HANDLE.

APPLICATION FILED AUG. 21, 1912.

PatentedDec. 9, 1913.

COLUMBIA PLANOORAPH (IO-.WASIIINOTON, D. c.

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KARL ALFRED QTT'O FRINDT, OF CHICAGO, ILLINOIS.

PAPER FILE-HANDLE.

To all whom it may concern:

Be it known that I, :KARL ALFRED O'r'ro FRINn'r, a subject of the Emperor of Germany, and a resident of Chicago, Cook county, State of Illinois, have invented cer tain new and useful Improvements in Paper FileHandles; and I do hereby declare that the following description of my said invention, taken in connection with the accompanying sheet of drawings, forms a full, clear, and exact specification, which will enable others skilled in the art to which it appertains to make and use the same.

This invention has general reference to improvements in paper file handles, and it consists, essentially, in the novel and peculiar combination of parts and details of construction, as hereinafter first fully set forth and described and then pointed out in the claims.

In the drawings already referred to, which serve to illustrate my said invention more fully, Figure 1 is a diagrammatic outline of devices employed to perform the first operation in the production of my invention. Fig. 2 illustrates the second operation partially completed. Fig. 3 is a cross section in line O O of Fig. 2. Fig. 4 is a longitudinal section of a completed file handle embody ing my invention, and Fig. 5 an elevation of the same.

Like parts are designated by corresponding characters or symbols of reference in all the figures of the drawing. v

File handles as generally -manufactured have many defects, the greatest of which is their liability to split apart when the tang of the file is driven into the handle. A cursory glance at the bench of the average machinist in the greater proportion of shops will disclose the fact that the majority of files in use are without handles, due almost entirely to the fact that after a very short period of use, the handles of present manufacture have split apart and become useless.

The object of my invention is the production of a file handle which is unsplittable even under the most severe usage, and to attain this result, I manufacture my handle from a tough, thin strip of paper rolled upon itself in a large number of successive convolutions, a film of glue being employed to cement each successive wrap of paper to that preceding.

I will now disclose the art of producing my file handle and refer to Fig. 1, in which Specification of Letters Patent.

Application filed August 21, 1912.

Patented Dec. 9, 1913.

Serial No. 716,146.

1 is a Work bench and 2 a roll of tough, thin paper supported by brackets 3 underneath said bench, the width of which paper is the equality of the length of the handle being manufactured. From the roll 3, the paper strip 4 is led upwardly through said bench and then over a small leading roller 5, after which it passes over roller (3, the lower portion of which roller is immersed in thin waterproof glue contained in a suitable glue pot 7. After being coated on one side with an application of glue from roller 6, the paper strip l passes over a stripper blade 8, which slicks off all surplus glue, leaving only a thin, even film thereon. Said strip is then led over rollers 9 and 10, the unglued face of the strip contacting with said rollers, which rollers are held apart by helical springs 11, normally in compression, to create a certain amount of tension in the strip.

From roller 10, strip 4 leads to a rapidly revolving arbor or mandrel 12, to which it is fed and permitted to wrap upon itself in successive convolutions until the largest diameter of the file handle is reached, when the strip is cut, and the now cylindrical blank 13 removed from the mandrel and set aside to dry and cure. The arbor or mandrel 12 is square in cross section for a part of its length and round for the remainder of the distance, thereby producing a core in said cylindrical blank 13, which has a core of square cross section at one end and of circular cross section at the opposite extremity.

After being tho-roughly cured and dried, the blank 13 is placed between centers 16 and 17 of an automatic gage lathe, square center 16 engaging the square core 14-, being employed as a driver for the blank. Said blank is then turned to proper external shape by a suitable turning tool, as seen in Fig. 2. In the process of turning, a shoulder 18 is formed at the end of the blank containing the square core, for the reception of a metallic ferrule 19. Said shoulder is considerably shorter than the said ferrule, so that when the latter is forced over said shoulder, the free end of the ferrule is forced into the fibrous body of the handle, which is now designated as A, thereby insuring a firmer contact of the ferrule with the shoulder and the body.

Vvhen the handle is being turned up, an axial boss 20, Fig. 2, is formed at the rear end of the handle, which boss is finally hammered flush with the surrounding surface, to close opening 15 by upsetting the fiber, as seen at 21, Fig. l. The final operation completing the handle, is the application of a coat of varnish to the exterior thereof.

It will now be observed that I produce a handle which is practically unsplittable. The square core at the front end of the handle is the *most serviceable for the receptionof the tangof a file, and, by forcing; the ferrule 19 directly into the fibrous body; the same is so tightly held in place as to:

eliminate any possibility of its becoming loose and falling off, as is the case in file;

paper file handle comprising a blank comha-ndles as now made.

In the =foregoi ng I have disclosed the art of manufacturing fi'le haindles, but I do not confine myself to file handles only. Any handle 0f circular cross section and of any size may be produced without departing from the spirit or scope of my invention.

Attention is directed to the fact *that this handle forms an extremely durable handle for carpenters tang or socket firmer chisels. In actual practice I have found that the handles cannot be split by blows applied to the striking face or end of the handle, and I have also found that practically the entire force of a :blow is itransmi tted to the chisel point, because of the non-resiliency and :intense density of the structure.

I- Ia Ving thus fully described my invention, I claim as new and desire to secure to myself by Letters Patent of the United -States: I

1. The art 0f mak-ing paper file handles which consists in Wrapping a strip of glue coated paper upon a rapidly revotvin mandrel which is partially angular and par tially round in cross section, *to produce a and a square core at the other extremity,

then turning the exterior of said blank to shape, and finally closing the end of said round core by upsetting the fiber there about.

3. As a new article of manufacture, a

posedof a single strip of :glue coated paper wrapped upon itself in a plurality of sucthroughout said blank, one :end of which core is of angular cross section and the other of round cross section.

4. As a new article of maiuifacture, a paper file handle comprising a blank composed of a single strip of glue coated paper Wrapped upon itself in a plurality successive convolut-ions and turned to proper exterior shape, there being an axial core throughout said blank, one end of wh-iohcore is of square cross section, merging into a round cross section at t-he other end, the outer extremity of said round portion of the core being closed.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

KARL ALF-RED GT' l O FRIN'DT.

In the presence of WV. HARDING, IVILLTAM O. STAR-K.

Cdpiesefth'i's patent may be dlitainefl for "fivecents each, by addressing the Commissioner of Patents, Was'lii'ligtOn, D.'C.

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