US1171764A - Process for making tools. - Google Patents

Description

H. B. 6L C. A. BARDAEN.

PROCESS FOR MAKING TOOLS.

APPLICATION FILED Nov. 19, 1914.

THE COLUMNA PLANOGRAPH co1. WASHINGTON, D. c.

UNITED sTATEs PATENT OFFICE.

HENnY B. BAEDEN AND oLIrroRn A. BAEDEN, or WALLIivGFoRD, VERMONT.

PROCESS FOR MAKING TOLS.

Application filed November 19, 1914. Serial No.7872,926.

United States, residing at l/Vallingford, in

the county of Rutland and` State of Ver# Y mont, have invented newand useful lmprovements 1n Processes for Making Tools,

of which the following is a specication. Y

This invention relates to improvementsin the processfor making tools. Y

The object of the vinvention is to provide an improved process for making tools such,

-in two `parts which ltwo parts are subse-V for instance, as rakes, hoes,.forks or the like constructedV of sheet metal having-a shank ormed integral with the.V work member, but

quently welded tog l, ther `their entire lengths to form a solid shank.

The invention consists in the combination and arrangement of parts whereby the above objects and certain other objects hereinafter appearingr may be attained, .as set forth in the following specilication and particularly pointed out in the claims. i

Referring to they'drawings:Y Figure l is a side elevation of a strip of sheet metal illustrating in full lines Vthe outline vof one type of tool which may be producedfrom said sheet metal, the dotted lines in said figure illustratingthe manner in which portions of said sheet metal are partially detached from thefstrp and bent outwardly to form a shank. Fig. 2 is a section taken on linel 2-#2 of Fig. .1. Fig. 3 is a front eleva-l tion of a tool, preferably a rake,.which has beenformed in accordance with the-process embodying this invention,the stem of said rake being shown straight or as it appears just before it is bent to lit a handle. Fig. l is a side elevation of a rake embodying our invention, the shank of said rake having been bent into a position to receivel the handle. Fig. 5 is a plan view of a'stripy of sheet metal which has been rolleddouble in order that Vtwo rakes may VbeV simultaneously formeditherefrom with the teeth of'one rake being cut from the material between the teeth of the otherv rake.v Fig. 6 is an end elevation of the strip of metalillustrated in Fig. 5. Fig. 7 is a plan .view ofa strip vof sheet metal slightly .different in form'from that illustrated ,in the preceding igures. This form of metal vis particularly adapted for the construction of hoes or like tools and the designof a finished hoelis shownin dot- Speccaton of Letters Patent. I PaielflgefiliFeb,` 15 ,11916,

ted'lines in connection with said ligure.

Y. Fig. 8 is anend elevation of the metall strip illustrated in Fig. 7 .Fig.9 is a side eleva-V tion of the finished tool as illustrated .inV

dottedV lines Fig. 7.y Fig. 10 illustrates another form of sheet metal fromwhich certaintools may be constructed, the type of tool to which l.this form is best. adapted' is illustrated in dotted lines in said figure.

Fig. 11 is a section taken on the line 11-11 of F 1g. 10. Fig. 12 is a side elevation'of one type of tool adaptedrto be constructedv from the form .of metal illustratedin Figs. 10 .i

andll. v Y Y Y Like numerals refer to like parts throughout the several views of the drawings.

i To accomplish the results desired and in the simplest and. most Azpractical vrmanner, the.

metal froinrwhich ythe tools, are tobeconstructedj is preparedk in sheets or strips, the

`cross sectionsof Vwhich may be variedfac! Vcording tothe type of tool to be constructedV therefrom. YThe preferred method of formingi'said sheetmaterial is byk Vrolling the metal intov long strips,which'may b e subse quently: cut into short lengths just long tially symmetrically disposed'along one edge of said strip with the `flat, face thereofV outermost, *fromV Vwhich enlargement theV strip Y gradually decreases in thickness toward thel 'oppositefedge' 16 andof the desired'taperjto enough for a singlev tool, vor said strips mayV produce a tooth of the correct formation. The next step in the operation of constructf ing a tool, or more 'especially a rake, istoy place the strip between suitable dies and stampingfrom said strip theiwork memberV as Shown .at 17, Fig. 1. If the'strip of metal 14 is longerfthan'the tool' which isbeing formed, the operation justV referred to seve'rs said tool frorntheremaining portion there# of and mayV at the same time form the teeth 18 of the; tool, provided said tool is a rake. Simultaneously withV this, said dies pref-' 1 erably detach therib or enlargement 15 from opposite ends ofthe strip constituting the work member ofsaid tool inwardly 'to points 19` adjacent lto the Acenter of said work member; The portions of said ribf15 y Vthe amount of said stripnecessary to "formw which are Y.thus detached and marked 2O ar then bent outwardly laterally relatively-t the edge 21 of the work member or in plane containing said strip and in the direction indicated by the dotted lines, F ig; 1. The next step in the operation is to bend said detached portions until the fia-t faces thereof contact with each other and weld the same in this relation, as shown in Fig. 3, thus forming a solid shank 22 integral with the work member 17 of the rake. The shank may then be bent relative to the work member 17 in` any direction desired, but preferably as shown in Fig. 4 into a position to receive the handle thereof.`

1f desired the rough or sharp corners produced by the stamping `operation may be removed by the sand blast method, or any other suitable nishing process. 1n the majority of rakes it is desirable that the shank 22 be cylindrical or substantially'cylindrical in cross section and this may be accomplished by producing the rib or enlargement 15 in a semi-cylindrical form, as illustrated in Fig. 2', the flat face outermost, thus when the strips 2O are detached and drawn together as in Fig. 2 and. 'the welding process completed the finished shank will be substantially cylindrical.`

1n forming tined implements from sheet metal there must necessarily be a small amount of wasted "material, due to the sections which are removed to form said tines.

duced by making the strip of metal 14a little wider as at E23, Fig. 5*, and for-ming lon said strip ribs Q4, 24 along opposite sides thereof, whilel the teeth 25 of oney ofthe work members is stamped yfrom the waste material between the teeth 25 of the other member, as Fig. 5 indicates. The Shanks of the rakes in this form are constructed in thesame manner as that described in connection with Fig. 1.

In Figs. 7,8 and 9, 26 illustrates a strip of sheet metal which is rolled, preferably wedge-shaped. The thickest side of said strip is severed along the lines 27, 27 from the opposite ends of said strip inwardly to points 2S and the severed portions Q9 formed thereby are bent outwardly as iIrF ig. 1 to form a shank, said strips being welded to* gether alongl their entire lengths. From this strip sod cutters, hoes or spades maybe formed and in all of the tools referred to it is preferable that the central portionor juncture of the shank with the bla de be reinforced. :[tr is for this purpose therefore that this strip is first rolled in tapered form. The detached portions Q9 are not as long as the finished shank will be,but are much, larger in diameter` permitting the same to be drawn out until the desired lengthv and diameter have been obtained and the shankafterward bent in the desired shape. Previous to the thel ` "the edges to form a blade 30, leaving the This waste may however be materially Vrebending of said shank the strip of` metal 26 is placed beneath thehammer and thinned out from the central portion thereof toward centrall'fportion 31 reinforced Aas indicated by the dotted lines 32, while the sides of said blade 30, from said reinforced portionroutwardly, are of substantially uniform thick# ness, as indicated in Fig. 9. rFhe blade is then trimmed. to the desired shape and pol-- ished by any of the numerous finishing processes.

1n Figs. 10 and 11 is illustrated another manner of producingl a hoe or the like. 1n this form the strip of sheet metal 33 is provided with anv enlargement 34e extending` substantiallylengthwise through the center of said strip, said enlargement being substantially larger in diameter than-the lfinished ,f

shank will be.` The first step in the operation for this type of 'strip is in partially detaching portions of saidv enlargement ffrom trated in Fig. 10 beyond the dotted 'lines-l illustrating the finished shape of the tool, afterwhich said bladefis trimmed to .said dotted lines and 'finished as in the previous` cases and. the shank bent at the desired angle relatively to the blade, one form of whichv is shown in Fig. 12. 'n

Y k1t will be evident tothose skilledk in the art that much material will bev saved bfy forming the shanksof ytools in the manner hereinbefo're described. and that a much stronger and more durable implement may bey constructed.

Having` thus described our invention whatwe claim andrdesire by Letters Patent to secure is:

1. A process for making tools which consists in forming a strip of metal with a -rib extending along one edge thereof, theniri detaching said rib from-said strip inwardly from opposite directions substantially to the center thereof, then in bending said ,detacned portions into contact with each other and then in welding said portions together their entire lengths to .forma solid shank.

2. A process: for making tools which con-` sists informing la strip of metal with.` an en-y largement, then in stamping said strip to forma work memberland to'sever said eny largement from opposite directions inwardly substantially to the center of said strip, then in bending the severed portions of said i enlargement outwardly and into contact f with each other, and then in welding said severed portions together their entire engths to form a solid shank.

3. A process for making tools which conwith each other to form a cylindrical shank, and then in welding said flat faces together. Y

4. A process for making tools which consists in forming a strip of metal having an enlargement symmetrically disposed along one edge of said strip, then in placing said strip` between dies toform teeth thereon and to sever said enlargement from opposite endsl of said strip inwardly to points adjacent to the center thereof, then in vbending.

the severed portions of said strip outwardly in the plane of said strip and into Contact with each other, and then in welding said severedportions together to form aV solid Shallk. Y'

In testimony whereof we have hereunto set our hands in witnesses. Y Y

. HENRY B. BARDEN. CLIFFORD A. BARDEN. Witnesses: Y'

MARGARET E. HORN, SYDNEY E., TAFT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, C.

presence of two subscribing 'Y

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