US2439058A - Method of making hand tools - Google Patents

Description

Aprile, 1948. L RORYAN 2,439,058

METHOD OF MAKING HAND TOOLS Filed beg. s, 1945 NVENTOR.

1 LESTER RVAYMo/vp RYAN Y fBY ATT ORNE Y Patented Apr. 6, 1948 v.1151 :ITE'D rS TATES QFLFI'CE WETHOB F `MAKING Lester Ray-mondltyan, Blymmithnionni Application :December 6, 194'5; Serial No. 633;124-' l1 Claim. 1

'This' invention relates Yto new and useful improvements inthe-.method of making 'hand tools. LThe. .objects @and I advantages Aof the invention will become :apparent -fro'm a consideration lof Athe following detailed description ltaken in connection with .the accompanyingdrawing wherein a satisfactory embodiment of the invention is shown. However, it iste be understood that the .invention is lnot limited to the details ldis-closed but includes all such variations.andfmodications ilfi) as fall within the spirit of the invention and the scope of the appended claim.

The present invention is applicable to various ihand'tools `as items of cutlery-and other devices, 'such as putty knives, screw drivers, etc. In the 'accompanying drawing the invention is zillustrated in connection with a paring4 knife ort-simin lar item. However., it is to v`be. understood that thel invention is not limited to `such an item'but appliesto various devices including a sha-nk 'or blade and a handle.

In the drawing:

Fig. 1 is a plan view showing a blank adapted to be formed into a knife;

Fig. 2 is an end elevational view of the blank of Fig. 1;

Fig. 3 is a more or less diagrammatical view showing the blank of Fig. 1 being subjected to a forming operation in conventional forming tools;

Fig. 4 is an isometric view showing the blank as formed by the tools of Fig. 3;

Fig. 5 is a view somewhat similar to Fig. 3 but showing the next forming operation;

Fig. 6 shows the article as the same as formed by the tools of Fig. 5;

Fig. '7 shows a tool performing the iinal forming operation; and

Fig. 8 is an isometric view showing the completed knife.

Referring in detail to the drawing, at I Il is generally indicated a blank, later to be formed into a paring knife or the like. This blank comprises a single piece of metal and includes an elongated central portion or shank I I and a pair of side or wing portions I2 and I3. Integral with portion II is an extension I4 here shown as in the form of a knife blade. It will be understood that the extension I4 may be in the form of any desired piece of cutlery or other tool, for example, a putty knife or the shank of fa screw driver or the like.

Side portions I2 and I3 are shown as provided at spaced points along their longitudinal edges with small ears I5 and I 6 respectively. While the portions I2 and I3 are integral with the intermediate portion'orlslmiik lil they :are adapted to dbe -ielded relativeftheretoias -alongrthe dotted f'o'ld lines fifi, fandin addition-portion I2 is adapted to rbc-'folded afs-along thefscorellines .flsand I9 while the portion lf3? isf adapted.; to doe'l raided along the score lines en and; 121?. all! as f will herea-ttermore clearly appear. .Blank I0;is'^a:iso1providejdwith ipalirsx of holes :orrecesses-t22rand .23s,frespectively adiacent the: moer pnrtionsirof Ithe "wings I2 and .1.3.-

Initial folding or formation; oflthefpontionrof the sblank Illritobeaibricated ,finto a liandle is .accomplished .by suitable: tools which may .be as outlined in .'Flig. .'llhesetoolswould includeva spring pad Zik-,a tplunger 25 and: pilots '26. AS these tools arerbroughtwagainst `t'heablank :the'flat- ,ter .is termed@ into thefshape shown inFigs` 13 and 4.. isi. the .intenmediateV par-t VIIE remains :fixed-the wing or portion lIfZl'iis oiiisetdownwardly from ftheffoldflineV If'I.. tooprovide fa portion 2-1 and then is folded sharply on the score lines I8 and I9 to provide the intermediate portion 28 and the upwardly bent portion 29.

Thus, the wing I2 is formed into an open ended hollow trough-shaped member having upwardly diverging side portions. Wing I3 is treated similarly but made into a reverse formation in that it is bent on the fold line II to provide an upwardly inclining portion 3l] and on the score lines 2D and 2I to provide the intermediate portion 3I and a downwardly diverging portion 32. Thus wing I3 becomes an inverted open ended hollow trough-shaped member with diverging side walls.

rI'he score lines I8 through 2| provide for the obtaining of sharp bends and fold lines III may be scored, if that is desired. Clearly the troughshaped members need not have inclined side wall portions but may be generally U-shaped or wholly curved as in an arc of a cir-cle or the like.

Next the formed piece of Fig. 4 may be treated as by the tools of Fig. 5 in which case the piece i-s positioned as shown at 33 by the broken lines. Then as the tool is closed the partlyl formed handle is further formed in that the wing I2 is folded over into a position at one side of the intermediate portion II while the wing I3 is folded to a position at the other side thereof, these folds taking place along the lines suggested by the dotted lines I'I in Fig. 1. Now the handle generally designated 34, is somewhat Z-shaped in transverse section as is clear from Figs. 5 and 6.

Having been formed into this Z-shape, the handle is now located between the tools 35 and 36 as in Fig. 7 and the formed side portions or wings I2 and I3 are pressed downward to bring their intermediate sections 28 and 3l into parallel relationship with one another and with the portion Il. As such Wing portions are located at opposite sides of portion or shank II the free edge of the wall portion 29 of wing I2 and the free edge of the Wall portion 32 of wing I3 are brought down against the opposite surfaces of opposite edge portions of the shank II as clearly shown in Figs. 7 and 8. During thi-s operation the small ears l and I6 may be bent into the openings 23 and 22 respectively so as to lock the Wings I2 and I3 in the desired relation to portion I I.

During this nal operation in the tools 35 andv 36 the inner and outer end portions ofthe intermediate sections 28 and 3| of the respective wings are pressed inwardly at angles as at 31 and 33 so as to close the end portions of the complete knife handle now designated 39. i

Stainless steel is a popular material for knife blades. With Such material heat setting of the completed handle portions 4! and di, formed fromthe wings I2 and I3, or welding of such portions might not be practical. handle portions are locked in place by the folding over of the small ears I5 and IS into the holes 23 and Il? respectively. The number or type of these ears is not important and in fact the ears may be caused. to lap over to hold the handle sections in place without the provision of the openings 22 and 23.

It will be apparent that the handle of the invention may be formed on articles other than knives and, in fact, the handle may be formed on various articles of cutlery and other items such asputty knives, screw drivers, etc. The handle is `made in three forming operations as suggested in the drawing and thus is inexpensive to manufacture. Further, since the handle is one piece with the shank or blade, the handle In such cases the Having thus set forth the nature of my inven-` tion, what I claim is:

The method of making an article of the character described comprising providing a blank including an elongated shank portion having an REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Y Date 336,116 Jeralds et al. Feb. 16, 1886 363,401 Lee May 24, 1887 365,819 Jordan ,Ju1y 5, 1887 942,077 Kener Dec. 7, 1909 1,080,661 Smith Dec. 9, 1913 1,376,764 Hart May 3,1921 2,116,890

Hamel May 10, 1938

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