US2474627A

US2474627A - Shock-damping verge plate

Info

Publication number: US2474627A
Application number: US764853A
Authority: US
Inventors: Howie Kenneth
Original assignee: Wildman Manufacturing Co
Current assignee: Wildman Manufacturing Co
Priority date: 1947-07-30
Filing date: 1947-07-30
Publication date: 1949-06-28
Anticipated expiration: 1966-06-28

Description

Filed July so, 1947' ww 7 2% w 4 J/ g a;

w 5 3 5 1 4 W 2 m 1 a \.2 2 m2 Patented June 28, 1949 snocx-mm'mc vnncn PLATE Kenneth Howie, Norrlstown, Pa., assignor to Wildman Mtg. (10., Norrlstown, Pa., a corporation of Pennsylvania Application July 30, 1947, Serial No. 764,853

14 Claim.

This invention relates to a verge plate structure for full-fashioned hosiery machines, and has for its primary object the provision of a shock-cushioning and damping verge plate for such a machine.

In such machines, as shown for example in my United States Patents Nos. 1,958,823 and 1,982,991, dated May and December 4, 1934,.

the jack sinkers which form the loops of yarn between the needles are driven forward against the striking edge of the verge plate at a high rate of speed by the movement of the slur cock. Where rigid metal verge plates are employed the blow of impact is so sharp that sinker vibration is engendered, and sinker breakage frequently occurs. When the impact edge of the verge plate is made light or springy to cushion the blow of the sinkers the operation becomes objectionably noisy. When non-metallic verge plates; for example, plates of cured fibre, or of fibrous phenolic condensation products such as Bakelite, are employed the butts of the sinkers cut into the front or impact edge of the verge plate very quickly and the plates have to be renewed at frequent intervals.

The present invention has for its objects severally and'interdependently the provision of an improved form of verge plate obviating the above-noted objections; the provision of a unitary verge plate having a springy striking edge integral with the main body of the plate and having shock-damping means to damp out the vibrations imparted thereto by the sinkers; the provision of an integral verge plate having cushioning and shock-damping means and adapted especially to reduce sinker breakage without producing objectionable noise in the case of a metallic type plate, and especially to reduce the cutting thereof by the sinkers in the case of a nonmetallic type plate.

With the foregoing and other objects in mind, the invention resides in the provision of a verge plate having a springily-supported striking edge effectively integral with its body and provided with rubber-like shock-damping means arranged to absorb the vibrations incident to the blows of the sinkers thereagainst, and in the novel features of construction and arrangement of parts contributing to the realization of the objects of the invention.

In the accompanying drawings of illustrative embodiments of the invention:

Fig. 1 is a diagrammatic vertical section through the sinker-head and jack-head portions of a full-fashioned knitting machine having one form of the new verge plate applied thereto.

Fig. 2 is a plan view of the verge plate thereof.

Fig. 3 is a cross-section of said plate taken on the line 33 in Fig. 2 looking in the direction of the arrows.

Figs. 4 and 5 are similar cross-sections of modified forms of the verge plate.

As is shown diagrammatically in Fig. 1, in the usual full-fashioned knitting machine the sinkers l0 are slidably supported in the sinker head, between a grooved sinker bed II and a grooved sinker cover I2. Each jack sinker II] is provided with a reenforced butt I3 having a striker surface H at its forward portion. When the sinker In is thrown forward in the sinker head by the movement imparted to the jack i=5 by the slur cock IS, the surface M of its butt l3 strikes against the striking edge of the verge plate 20 which arrests the forward movement of the sinker.

In accordance with the present invention, the verge plate 20 in the form shown in Figs. 1, 2 and 3 is of steel or brass construction and is preferably milled from a strip of the metal about fifteen and one-quarter inches long, an inch wide and one-fourth inch thick, when it is to be used in a fine guage stocking machine having a relatively thick sinker cover l2, such as that shown in the above-mentioned patents.

This verge plate 20, as shown in Fig. 2, is provided with spaced counter-bored bolt holes 2| providing for its securement to the sinker cover I! as by cap screws 22, Fig. 1. When the cover I2 is relatively thick the striking edge 23 of the verge plate 20 is depressed relative to the main body or mounting portion of the plate, to abut the sinkers at as low a level as possible.

In accordance with the present invention, in the form shown in Figs. 1, 2 and 3, the underside of the verge plate 20 is provided with a longitudinal groove 24 which thins that portion of the plate between its mounting portion and its striking edge to a thickness of about .032 of an inch to .045 of an inch and provides a relatively thin arched or offset web 25, from which the striking portion of the plate depends. The web 25 thus provides springy support for the striking edge 23 and cushions the blows of the sinker butts thereagainst. vIn addition the striking portion 23 is backed up by a body of vibrationdamping material 26. This material 26 is preferably in the form of a strip-like insert of oil and grease-resistant synthetic rubber-like material such as that presently marketed under the As is shown in Figs. 1 and 3, 'the..rubber-.-.l ike v insert 26 is held in place between the verge plate and the sinker cover l2, *whenthe verge plate is mounted. Hence no particular-mode ried be adopted for mounting the damping strip 26 in the groove 24. or special cement or otherwise, if desired.

4 the striker face 23b throughout all or a greater portion ofethe height of the plate than in the other illustrative forms, to aid in minimizing the cutting of the sinker butts into that face. The arched or offset web b which resiliently supports the overhanging portion 23b in cantilever fashion, inthis case is usually somewhat thicker than that r'ernployed in-"t'he metal plate. Thicknesses of .0'32of an inch to .060 of an inch are ,satisf-actory. The rubber-like insert 25b in this nstance cooperates with the web 25b in support- ;inggthe'strikereedge resiliently, dainps the blows of the sinkers against it and reduces the rate at whichthe'-edge".23lr is-cut into by the sinker butts. j 'Ihe-invention sfnot limited to the illustrative forms 'disclosedto exemplify the same.

It may be attached=withe=shellac In accordance with the usual practice the countersunk holes 2| are made slightly larger in diameter than the :cap screws 22-, to: provide for limited adjustment :an'd alignment of wthe verge plate: relative to' theassociated parts of' the machine, and for moving upxdftheplate when theface 23 is refinishedea'fter it ais worn. The striker edges 23 are preferably hardened,"to reduce the wear thereof. a

In the modified -"r-orm-"of Fig.='a4,s.in whichith-e corresponding parts are -indicated "by the same reference numerals coupled with'the letter ia, the construction is generally "the same except that the groove 24a,'milledlongitudinally in the underside-of the"plate1:20a,:fis of circular cross; section at both its sides. I

This results in a swebssection 'i25a whi'chzin effect is shorter thanthe :webt section' ZMFig. "3, and which is therefore less =resilientt=than Stile form of Fig. 3-if1thew'eb is .ofz' -equal1thickness. The form of Fig.3. iscpresentlytpreferred as "with this form the web-mayrbemade'somewhat thicker than the form of Fig. 4, thereby avoiding crack ing and warping'rand facilitating amanutacture.

The thickness of'theweb'r2iis'preferably' varied in different plates 'topsuit EdifiEI'BIltTOOIldlfiOIIS' in the machine 'due= to the size of yarn" being run, the width of the slots-in the-sinkerilheads, etc; Some machines run satisfactorily-widthiithis' part of the verge plate quite ."heavy; whereassother machineswhich 'seem'to be quite similar,:-require a much thinner verge :plate.- This is usually determined by theasinkerrbreakage. 'If the "machine' is breaking too'manyssinkers; this maybe obviated by changing "to "a "thinner =verge' 1 plate. In the form of 'Fig. 4,1asin 'Fig. =3,tthe"'rubberlike vibration damping insert 26a is preferably shaped to con-form' to thBE'gI OOVB "14:12 andbear against the web 250i toiabsorb the vibrations imparted by the 'rblows of :the'sinkers against the striker edge 23a.

Fig. '5 illustrates the applicationof'thez'invention to a non=metallic "verge "plate r2011. -Such non-metallic vergeplate'may be formed ofwany suitable material for example, fibre, a phenolic oondensation'product; or=-a fibrous phenolic con =densation product, as cured laminated -fabric impregnated with Bakelite'or the like. Here the corresponding'parts are indicatedby'the same reference numerals coupled with" the"-letterb. In general withthese non metallic 'materials it is desirable to keep the overhanging portion comprising the strikerface'flb'in line with the main body of the plate, as 'the material isusually-of insufficient strength to "permitextension or the overhanging portionther'ebelowas in"Figs.-"3 and 4. In addition; itis usually 'desirable to =exterid 1. A verge plate comprising a longitudinallyextending body portion having a longitudinal striking edge of hard material and having a longitudinally-extending"groovebehind its striking edge imparting springiness to said striking edge, and a-rubber-like vibration damping insert positioned in said groove. 7

2. A verge plate comprising a longitudina-lly extending" body portion having a longitudinal striking edge supported therefrom by a relatively thin arched web-like portion, said body portion and striking edge'being formed oi hard material,'and a relatively soft rubber-like vibration clampingelernentiloearing against said 'weblike portion.

3. A verge plate comprising a longitudinally extending body portion having a longitudinal striking edge supported therefrom by a relatively thin offset web-likeportiomsaid body portion'and strikingedge being formed of hard material; and a relatively soft rubberdike vibration damping element within-andsubstantially filling the off set of and bearing against said web-like portion.

'4. A-verge plate comprising a longitudinallyextending body portion "having a longitudinal strike receivingportion and a relatively thin offset supportin'g: web by which said strike-receiving portion is supported in overhanging relation from'said bodyportion, said bodyportionand striking edge being formed of hard material, and a relatively soft rubber-like'vibration damping insert back' of said strike-receiving portion.

5.-A verge plate for full-fashioned knitting machines and-the like, comprising a unitary body provided with an integral strike-receiving portion supported therefrom in overhanging-fashion by a thinned section thereof, said body portion and striking edge beingformed of hard material, and having a shock-damping insert of-relativelysoft rubber-like material-backing up said strike-receiving portion.

.6. A verge plate for a sinker type knitting machine, comprising a relatively rigid mounting portion, said plate having a striker portion of hardmaterialto receive the blows of. the sinkers, means for cushioning said blows comprising a relatively thin ofiset web portion supporting said striker portion from said mounting, portion, and means for damping the vibrations imparted by the sinker blows comprising a relatively soft. rubber-like insert. bearing against said web-like. por-e tion.

7. A vergeplate of relatively hard material having its striking'edge supported by a relatively thin springy'web and'having a relatively soft rubber-like vibration damping insert back of its striking edge.

-' "'8; "A xverge' plate "of relatively *hard material having a resilient web-like portion supporting its striking edge and defining a longitudinally-extending groove therebehind, and a relatively soft rubber-like vibration damping insert in said groove.

9. A quieted metal verge plate comprising a longitudinally-extending metal bar having a longitudinally extending groove therein between its striking edge portion and its mounting portion and which provides, flexibility in its striking edge portion, and a rubber-like vibration damping insert in said groove.

10. A non-metallic verge plate comprising a longitudinally-extending bar of machineable nonmetallic material having a longitudinallyextending groove therein between its striking edge portion and its body portion and which provides flexibility in said striking edge portion, said striking edge portion being backed up by a rubber-like shock damping body positioned in said groove.

11. A verge plate for sinker type knitting machines, having a unitary body provided with an integral hard, relatively springy impact portion and with shock-damping means in backing up contact therewith to damp out the vibrations imparted to said impact portion by the impact of the sinkers.

12. A verge plate for sinker type knitting machines having an integral hard, overhanging impact portion supported from the main body of the plate in cantilever fashion by a thinned section thereof and having an insert of oil-resistant rubber-like material underlying the said 6 thinned section and backing up said overhanging portion.

13. A metallic verge plat-e for sinker type knitting machines having an integral overhanging impact edge supported from the main body of the plate in cantilever fashion by a thinned section thereof, and having an oil-resistant rubberlike insert backing up said cantilever-supported impact edge and serving to deaden the noise of impact of the sinkers thereagainst.

14. A non-metallic verge plate having an integral overhanging impact portion supported from the main body of the plate in cantilever fashion by a thinned section thereof and having an oil-resistant rubber-like insert backing up the cantilever-supported edge and serving to cushion the impact of the sinkers thereagainst and reduce the rapidity with which they cut into said impact portion.

KENNETH HOWIE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,622,976 Schulz May 29, 1927 2,080,353 Bay et a1. May 11, 1937 2,162,660 Weisbecker June 13, 1939 2,227,403 Weisbecker Dec. 31, 1940 2,384,451 Brumbach Sept. 11, 1945 2,426,803 Weisbecker Sept. 2, 1947