US1407960A - Method of making knobs - Google Patents

Description

- c. P. SWICK AND F. 0. KRANTYZ.

METHOD OF MAKING mass,

I PatenizedfFeb. 2s, 1922; 16-

v and Fannie O. KnANrz, citizens of the Un itc d States, residing respectively, at

v, oompanyingidrawings.

State 016' Connecticut, and atjOakvillfe, in .said county and State ha ve inventeda u certain new and .useful Method of" Making" "against rotation in theinoperative position.

em ltncmounqsssrononsro AMERICAN RINGCQMPANEDF WATEVRBUR'YQ commie-1 'ou'r n ooitronh'i ronor oonnnocbrou'r.

' METHOD on MAKING-intone.

1,407,960. 7 I V r.a licafion fiieiisxine 1e,v To air whom a my mm! 2 Be it known I hat we, CHARLES P. rS WICK Waterbur in the county of Newv Haven and Knobs, of whic'h the following: is ,a specifica tion, reference being'had therein; to :the ac- Our invention relates to a new and Vim-v pi'oyedwrnethod ofiiia'king knobspr the like, "r rern gnore particularly to the typeof metal knobs thatv are Idesigned tojbe held 1 Iti s the object" of thisiinyention, among other things, to produce by our method a knob of this character that will haveintemoreprojections of any desired shape that gralprojections upon the contactffa'c e therer of. produced by means that insures'oneor' may or may not be uniformin shape, and

consists in the method of making knobs sub;

stantially as hereinafter described. and more,

numerals of reference designate like parts iformed knob and still attached to the bar out of which it is constructed; and illustratring one. of the stepsof our method;

each having a solid base integral with the knobitseli. p p I ,1 p To these and other ends, our invention particularly pointed out inthe claims. 7

Referring to thedrawings :in which. like.

in the several figures Flgure 1 isian elevation of a partially;

Figure 2 isan end iew thereof;

Figure 3 is afragmentary endview. of one formpf tool for operating upon'the contact 7; face ofthe knob; M A p Figure 4 is a fragmentary View of thecompleted knob, and aaseotional view of a pairiof -kdies, for holding the knob during one of the operations of our process;

Figure 5 is a fragmentary View of the lower end of one form of tool for producing projections upon the knob;

Figure 6 is a View of the contact face of the completed knob; and

Figure 7 is a modified form of tool.

The type of knob such as is shown in the drawing and described herein to illustrate our invention is such as is generally used for Specification of Letters Patent;

. prongsithereon Aintegra the knob is connected, 1

from a bar 10 of me't ies." s "a, fl "p'jfiu'; orifthefiike', in

though, of course, it is not limited thereto.

thereontliat-theyi haue nosolid zbaser Our invention is largely designed to produce a solid turned knob with projections 01' 9s nifo m in s a e t ize or. no s si s red, .andeach having; a sol d base and ,ta-'

pered so as to more readily faQilitatethe; en-

Knj ft saipe. s lul ielli-f i fi d mea ti eihe eir d; Sh pe-.1 A; k ob. so turned butinotsevrered from the bar is, shown 111 Figure 1 anddesignatedrby the numerals '11 counse -the illustration discloses" only one of the many shapes in-whichthese knobsbe n Incom s ees 12' Qii b p v d nii hie p ejee ing i e l3 whichistapered on both sidesto its outer l4 andthe basejupon eachsidepgof the ring lBis provided with recesses loand:

16 which are below the contact-face A centralrecess 17 isia lso provided'in the base i ei dell drill fe -th ope in 8 t e which isfsubs'equ'ently threaded as shown in r w is no form of tool (byiwhichthe base .of -the knob can be formed substantially asabove -desoribed ,is shown in Figure 3 and designated by the numeral; 19 the,,diameter, of

which. may beyaried as, desired. 7 ;After the. kn b l e fo med and ha ed fro th b r it i held weenl-e ,p zmf i si an df2l with the ring 13 1 projecting beyond t rf r lhereefa 'Aitoe 2,: e nae e rality of recesses 23 therein corresponding in shape with the finished projections or prongs 24 and substantially in cross-section the same size and shape as the cross-section of the ring 13 is now brought up against the knob and such portions of the ringl3 as lie between the-recess 23 in the tool 22 are compressed or flattened out. The remaining portions of said ring form the projections or prongs 24 which as shown are of substantially uniform size and sh p have a solid Patented, Fem-2e; 1922,.

/ What has been heretofore impossible topr'cywde/Witha solid turned knob isaneans I upon the contact facelthereof gto preuentyits rotation, without attaohingauiz ili ary parts thereto or so forming projecting gparts e1 by. turni g a portions 1 t er wi h, t ese betrance thereof into the surface rwithj which base and are pointed toward the top. By

varying the shape of the sides of the ring 13 or the recesses 23 in the tool 22, or both,

"the shape of the prongs can also be changed from those herein shown. Eight projections or prongs 24 are shown in the drawings, but

. it is obvious that a quarter or less number can be formed equally aswell. 1

The face of the tool v22, may if desired, be' 'pr'ov'idedwith a ring 25, having the recesses 23 therein, the diameter thereof being such as to permit its enteringthe recesses 15 and16 without any portion of the total engaging the contact face 12.

If the metal in'the ring 13 has a tendency to flow outwardly by the action ofthe tool 22 thereon the recesses 15 and 16 accommodate this movement so that upon completion of the knob the contact surface 12 is straight and all displaced metal is below the face thereof.' I j While wehave shown in the drawin a knob out from a solid bar, our metho is equally applicable to a cast; knob, a ring 13 being turned or tuned up upon the contact face thereof.

" 1 Minor changes and alterations maybe made w thin our invention'aside from those herein suggested and we would therefore have it understood thatwe do not limit our selves to the exact construction herein'show'n and described, but claim all thatfalls fairly within the spirit and scope of our invention} l the contact face thereof, and thencompress' -W hat we claim is our invention, and desire to secure by Letters Patent, is:

1. A method of making knobs or the like, which consists in forming a projection upon "'inga portion of saidypro'ection, the non compressed portion thereo forming one or more prongs. 1 I s a 2. Afmethod of makingknob's or the like,

whichconsists in forming a projection upon the contact face thereof, then compressing a .portion of said projections, and shaping the remaining {P01131011 to form one or more prongs. Y

" i 3. A method of making knobs or thelike,

"which'consists in forming a projection upon the contact facethereof, one or more sides" *of which formfaces of the rong or prongs "hereinafter mentioned, and t en compressing a 'portioii' of said projectiom'the non-com-" pressed portlon thereof forming-one or. more a prongs p 4. A method of making knobs or the like,

which consists in forming a projection upon.

5. A method of making knobs or the like,

which consists in forming a projecting ring upon the contact face thereof and then compressing a portion of said ring,tl ie noncompressed portion thereof forming one or more pron which consists informing a projecting ring upon the'contact face thereof-and then compressing a portion of said ring,thenon-compressed portion thereof forming one ormore prongs, equally distant from the center fof said knob upon said contact face. f

7. A method of makin" knobsor the like, which consists informing a projecting ring upon the contact face with flaring j sides which terminate and join ata' point upon the outer edgeiof said ring, andthentcom 6. A method of making. knobs ortheglike,

pressing a portionof said ring; the' nonf compressed portion forming one. o1" more '81 A method of maklng knobs or the like,

which consists in forming a projectingring upon the contact face thereof sides whichtaper toward each-other awa'y' 'from "the said contact face, I then compressing a portion of said ring, the non-compressed portion forming one or more prongs; two sides thereof being formed from the'sides of said ring and the others bein formed so as to taper outwardly during t e'compression of said ring.

' 9. A method of making knobs o'rthe likef which consists in forming a projectingring upon the contact face thereofandthencompressing a portlon of said rang, the non-compressedportionforming one or more prongs, which BIBPOIIItGCl at their outer ends, a por tion of thetapered sides being originally-the sides of sa d ring and the other sides being formed during the compression thereof.

' In testimony-whereof we have hereunto ailixed our signatures.

1 CHARLES P: sWioK. FRAN o. KRANTZ.

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