US2497386A - Bar stock marking machine - Google Patents

Description

2 Sheets-Sheet l www.

C. A. ZAROBSKY BARSTOCK MARKING MACHINE Feb. 14, 1950 Filed Nov. 22, 1943 Feb. 14, 1950 c. A. zARoBsKY BARsTocx MARKING MACHINE 2 Sheets-Sheet 2 Filed Nov. 22, 1945 Patented Feb. 14, 1.9540

UNITED STATES PATENT OFFICE The Parker 'Appliance Company,

Cleveland,

Ohio, a corporation of Ohio Application November 22, 1943, Serial No. 511,337

4 Claims.

The invention relates generally to marking devices and primarily seeks to provide a novel, power driven machine structure for rapidly and efficiently marking bar stock so that when the stock is subsequently cut into small pieces incident to the manufacture of units of which valve, coupling or fitting elements, rings, sleeves, `collars or like elements constitute examples, said units each will have impressed thereon identifying markings assuring the purchasing public as to the origin or other standards of the product, material specications or end use designations.

It was the practice in the past' to hand mark bar stock for the purpose stated, as by daubing identifying colors thereon, but such practices caused trouble in the working of the stock in forging dies or automatic machines and have become obsolete. Machines have been provided heretofore for marking bar stock, but such machines have been limited in efficiency and popularity because of slowness of operation, lack of clearness and uniformity in the marking effected thereby, lack of adaptability to the marking of different types and sizes of stock, or due to the complicated nature thereof and resultant high cost and dii'lculty in handling. It is the purpose of the present invention to provide a simple and economically constructed machine in which all objectionable features of the nature stated are avoided.

In its more detailed nature the invention seeks to provide a novel machine structure of the character stated in which the bar stock to be marked is fed rapidly between marking rolls which preferably impress the desired marking along opposite sides or faces of the rapidly travelling stock, means being provided for yieldably pressing one said roll toward the other for applying yieldable pressure effective to compensate for any slight inaccuracies in the straightness or size of said stock.

Another object of the invention is to provide a machine of the character stated in which'is included means for adjusting the spaced relation of the marking rolls without disturbing the means for yieldably pressing one said roll toward the other.

Another object of the invention is to provide a machine of thecharacter stated in which the opposed marking rolls are flanked by two rotary supporting and driving rolls each opposed by a grooved and springv pressed roll, said spring pressed rolls being adjustable toward and from the Ydriving rolls without disturbing the pres- ,sure applying devices.

Another object of the invention is to provide a machine of the character stated in which the driving rolls and one of the marking rolls have spur gears secured thereto and an idler gear is interposed between and meshes with the marking roll secured gear and the gear attached to the driving roll at each side of said marking roll, driving power being applied to the gear connected train at the position of driving roll farthest along in the direction of feed travel of the .bar stock thereby to eliminate back lash and assure that both driving rolls will effectively drive the bar stock.

Another object of the invention is to provide in combination with the bar stock supporting and driving devices, novel means for registering the footage of bar stock marked in the machine, and means for adjusting the position of said registering .means incident to the adaptation of the machine for the marking of different sizes of bar stock.

With the above and other objects in View that will hereinafter appear, the nature of the invention will be more fully understood by following the detailed description, the appended claims and the several views illustrated in the accompanying drawings.

In the drawings,

Figure 1 is a fragmentary left side elevation illustrating the marking machine, parts being broken away and in section.

Figure 2 is a Vertical cross section taken on line 2-2 on Figure 1.

Figure 3 is a fragmentary vertical cross section taken through the mounting of one of the presser rolls.

Figure 4 is a fragmentary vertical cross section taken at the position of one of the idler shafts.

Figure 5 is a fragmentary vertical cross section illustrating onev of the beam spacing bolt equipments.

In the example of embodiment of the invention herein disclosed there are included a feed-in table or support, portion A, on which the 'bar stock is supported as it is being fed into the marking machine proper, generally designated B, wherein the marking means and also the stock moving or feeding means is incorporated, and the feedaway table or support, generally designated C, on which the bar stock is supported as it is being fed away after having been properly marked in the machine B.

The feed-in table or support A includes a pair of parallel space support beams 5, which are supported as at 6 on the frame of the machine proper B and by other suitable supporting standards (not shown). Between the beams are mounted a plurality of bar stock support rolls 1, and at spaced intervals certain of said rolls are provided with spaced guide collars 8, for properly guiding the bar stock to the feeding and marking devices in the marking machine. The guide co1- lars are .adjustablysecured on\therolls 1, as at 9, so that the lateral spacing thereof rnayvbe varied to accommodate bar stock of different sizes, assuming, of course, that the shape of bar:-

stock illustrated in the drawings is maintained.

The machine proper includes a support frame comprising transverse table.=beams:. II), and sup'- porting standards I I. Themachine frame-also includes transverse suport extensions I2 whereon is mounted a driving unit includinga,motor I3. The drive shaft I4 of the motor is'coupld with a speed control gearingmunit I5 of any approved type. The drive or power out-put shaft I6 of the. unit. I5fextends. in -parallehrelationg to;` the motor/shaft I4: but .in the opposite direction, toward .the bar. stock. feedaway'.

TwoL channel beams..v I'I'-Y are. secured-' as-.at- I8 upon the table beams I0, said beams II being held/yin parallel space-relations `byvb'olts4 I9 and interposedspacer sleeves 2 0, in theV manner best illustrated in Figures -2pand5 oi the drawings. The beams II have their upright body webs arranged back to, backainspacedmelation as shown in Figure 2 with their upper and lower flanges, designated ,.I'I and I'I respectively, directed ,outwardly. The upright body webs of the channel beams are equipped with -3sets .of verticaLaligned slots erguida-ways .2 I,: andgineach aligned set of guideeways there. is mounted ;a. ;v.sli'de block 22.. See..Figures 1-'and 12;. An :adjustor screw 23 is. rotatably Linsertedxinl a. bore. .24 the A-upper surface .fof` 1 eachv block. and :securednagainst:ziende" wise imovement.. in. :the .bor-e. -by annular groove and pin connection 25. Each screw 23 extends upwardly-through .a thread. bore v26 in.a bar 2'I lying -.transversely across. the :beamsll' .in the upper anges I'l.:.of the'manner clearly illustrated infFigures 1 and.2,1and:it.Willberobvious thatby rotating ,the vscrews-.23 .-the'respective slide blocks 22 can be lifted or lowerediin'ithezslcts 12 Iin .which they are mounted.

Two L bolts .28y epass -upwardly *.throughatliel top ange I'Ifof the. .beam IfIoverlying thebar stock I feed-away and throughthefendfof each barv2'l overlying said beam, and .asingle .bolt 2 9;` extends upwardly through the top flangeI'I'Lsof theother beam. I l; and through thesend 'of .eaehgbar/ overlyingsthe same. Compression springs 3Q surround the several bolts 28 and 29 between the upper surfaces of. the bars 2'I and theadjustablenuts or.,ab utment` heads .3l 1;mour.1;ted.on .;the bolts and; serve. todyieldably. press/ the. bars andthe adiustably attaehed..b10cks v22y downwardly.. `A casing walli 32 may be provided andrgaghingeudly mQlld CQY?? 3.3.- 3115.5. f il@ :utilized .t0 Y1C10he adjustor-screwsm23- and thebolts 28 29 against inadvertent. Contact... Y

Beneath veach set fof guide slots 21|, the beams I1L have'aiixedthereto a'rbearing. sleeve 34 'and a .,sr'rvaller-l 'bearing sleeve .35', kaxially aligned..vwith theirst; mentioned bearing. sleeve. Eachset of 'ligped 'bearing sleeves 3 4; 3 5V servesV to: rotatably su. ont a shaft 3.6.. Each shaft 36. ishe'l'd against endzwisemovement byan ailxedfhead siiabururig the end 'ofthe sleeve 34; and by a removablehead `38n abutting the end vof the nrespectivesleeve.i355. Smlaretsisi Sleeves rotatablygsupnri twill-v termediateV Avidler shafts 39,' and, all of v.the 'shafts 3B, 39 have like diameter spur gears 40 secured thereon between the larger diameter part thereof in the sleeve 34 and the adjacent ends of the smaller sleeves on the smaller ends of said shafts. The gears 40 intermesh in the manner clearly illustrated in Figure 1 of the drawings.

The end-most shafts 36 are equipped with bar stock supporti-ngroll extensions' 4I, and the cenltral"slfr'aftrv 36-h'as a marking 'roll 42 removably secured thereon as at 43. See Figure 2. The marking roll is equipped with a marking periphery 44, and it is to be understood that the marking rolls may be selectively mounted so as to -provideithe particular type of marking desired during azparticul-ar setup of the machine.

At theffarfend'of the machine, that is at the endltowardwhichlthe bar stock is fed, the shaft 36'is extended as at 45 and is coupled as at 46 with vfthe/"drive shaft or power out-put connection I6. By thus connecting the drive shaft of the variable speed: lreducer unity IIif-to;` the"v extreme left handsha-ft 3E *as viexved'in ligure- 1, all the. back lash and :free-.playin the=g1ear train 4I).is;takerr,up whenytheiirstV roll 4I` drives the bar.: In .this manner:both.-rojlls.-4I andthe -ma-rking. rol-1142 serve ttofu'nge the bar stocki` jthrough the1machine. Obviously,` if `,the i-rst'vrollfindicated atgthe-v .right in; VFi-g-ureifl l Were-connected to- `the powershaft, thenfonlygthefjiflrst roll would serve t0 urge the bar l stock f .throu'ght :the :machine tbecausenof back;.lash; in.the geartrainfland the markingroll: 42and-:the otheridrive-froll: 4 I lwould idlewithout .aidingginf-urging the bar vstock through themachina .Thercentrally disposedvslide blockw22 is equipped withiafbearingesleevef in'whichfafshaft-fis f1eely1'otatable.;. The shafft .48 -has :aflmarking roll 4 9 removably secured thereon vin position for overlying andA opposing the previously desrbedsmarkinecrell A25.. marknegrollsf andlcgopera indentine the desired-identiiyinezimarking. ngthe. umani-1f i. andx lower .faces of. the-bar ,stQck.-S in;.the=manner clearly illus'- trated inieure,

. Each 0f;.t11e.-11^1.v ;1 .remainineaorz ndS1-ideab1oQkS 22hasa shaft 50;'.afxeditheretcfnwha-manner clearly illustrated inirieure -Bf .and onfeach said Shaft. is a .groeyed.-.=presser 1f01g1v V5I .removably @ustedes-at V52;. It to, be understoodfthat the presser rolls 5I can be replaced V,bypther Dresser rollsof insurer-shape? fori-engaging Y:and guiding barstock Stef:vanwsshapesandenes, thus .Serving to perectlycalien the. rapidly travelliuabanstpck. Wittig-the marking rolls 142,649.1 xbetweeng-whicbasaidestock .'felft.Y It will befeh- ViOuS. .thetthe feeding-.movement iszimpartedfto the. .bar- 'Astock by the opposing feed-,roll sets v4 I 5I... In the.machine.:hreina'described, .t Stck .we :be/.fed and marked at the .reise f eeteer. heenweg; large sleepers '0.f.-h.erd irletls are being marked, and at speeds-up 19,000- feet perghour when smaller and-softer... ars are being .Ordemgl regisier fthe amount Qf- .-br;;t'. =.k .foetasegaked min machine.- thereis. v.nlefili @registering 'device 153 which iS.- mountedf on. a support arm 54, pivoted as"v at 55 bn one ofthe beams l1 irl. ilf1e-menr1erx1eerly illustres Figure The-arm Senese. .Crali'xieesi. which engages an .adjustab1e,.screw 5l.,Y In practice, thefsc'rew V51 adj'slte'dfo that when no bar stockl is being .fed through the machine the under "surface'iofftle "wli'el '58"wil1'rest approximately'ief. b'lwthe level towhich it ,'is lifted byV Contact v'with' the driving "b'r stock,

Thus the Wheel 58 will move up approximately 15; of an inch when the driven bar stock first engages it. This providesfor a little movement of the wheel to compensate for slight inaccuracies in the straightness or size of the bar stock. The wheel is held in engagement with the bar stock by its own weight and the weight of the footage registering device 53.

The feed-away table or support C comprises a pair of parallel spaced support beams 59 which are supported as at 60 on the marking machine framing and upon suitable support standards (not shown), and these beams also mount a plurality of bar stock support rolls 6| in the manner illustrated in Figures 1 and 2 ofthe drawings.

In adjusting the machine for marking a particular size and shape of bar stock, the bar stock which is to be marked is inserted between the idling rolls I and the driving rolls 52, and the screws 23 associated with the idler roll-carrying slide blocks 22, are turned until the idler rolls 5l contact said bar stock. The screws 23 are then given an extra turn to cause the idler rolls 5| to grip the bar stock under spring pressure. This extra turn of each screw causes the rectangular bars 21 on top of the upper ilanges I1 of the channel beams I1 to rise slightly from the channels in the manner clearly illustrated in Figure 2. This type of grip on the bar stock permits slight variations in the bar stock size without aiecting the penetration of the high grade hardened steel marking dies 49, 42 because the spring pressure maintaining the rolls 5I in contact with the bar stock remains substantially constant for slight variations in bar stock size. It is to be understood, of course, that the upper or adjustably mounted marking die 49 is adjusted in the same manner.

When the machine has been adjusted as described above, bar stock to be marked is fed over the feed-in table A, properly guided by the spaced collars 8, and is inserted between the opposing idler and driving roll sets 5|, 4I and between the opposing marking dies or rolls 49, 42, so as to be marked on both sides, that is on and along the top and bottom surfaces by said dies. The marking on the bar stock is such that when the stock is cut and machined into tting, valve or other unit elements, at least one unit of marking will appear on each element or piece. The frictional engagement between the rolls 4l and the bar stock serves to drive the bar stock through the machine while the desired markings are being indented thereon.

The simplicity of operation and set-up are outstanding features in the marking machine herein described. It requires but a moment to change the high grade hardened steel marking dies or rolls or to replace the idler and presser rolls 5l so as to change their shape and size according to the type of stock to be marked. It will be obvious also that the speed of operation of the machine can be varied at will.

It is understood that the @tails of construction of the cooperating parts can be variously changed without departing from the spirit and scope of the invention, as dened in the appended claims.

I claim:

1. In a bar stock marking machine, power driven gripping roll means for feeding the bar stock in the direction of its length, a rotary roll in supporting engagement with the travelling stock at one side thereof, a frame member, a

guideway on said framena.v slide block slideable iii said guideway toward or from said roll, a presser bar, screw means attached to said block and threaded through said bar and adjustable to positively move the block toward or from said roll and from or toward said bar, spring means` urging said bar and block toward said roll, and a marking roll rotatably supported on said block inposition for engaging said stock at its opposite. side and directly opposing the first mentioned roll.

2. In a bar stock marking machine, two bar stock supporting and moving rolls spaced along the direction of travel of the bar stock, a marking roll disposed beneath the travelling bar stock and with its axis in a plane between said stock supporting and moving rolls in position for engaging and marking the face of the bar stock engaged by said stock supporting and moving rolls, a spring pressed marking roll engaging the stock at the side thereof opposite the side supported on said stock supporting and moving rollsI and directly opposing the rst mentioned marking roll, a train of intermeshing spur gears connecting the first mentioned marking roll and the stock supporting and moving rolls in driving relation, and means for driving the stock supporting and moving roll last to be engaged by the bar stock.

3. In a bar stock marking machine, two bar stock supporting and moving rolls spaced along the direction of travel of the bar stock, a marking roll engaging the stock at the side thereof opposite the side supported on said stock supporting and moving rolls and with its axis in a plane between said stock supporting and moving rolls. a marking roll engaging the stock in direct opposition to the rst mentioned marking roll, and a stock guiding and presser roll for engaging the stock in direct opposition to each feeding roll, a. frame member, a slide block rotatably supporting each said presser roll and the rst mentioned marking roll for movement of adjustment toward or from the path of travel of the bar stock, a presser bar associated with each said block, screw means attached to each said block and threaded through the associated bar and adjustable to positively move the attached block toward or from the path of travel of the bar stock or from or toward said associated bar and spring means urging each said bar toward the path of travel of the bar stock to yieldably press the associated presser rolls or marking roll against said stock.

4. In a bar stock marking machine, two bar stock supporting and moving rolls spaced along the direction of travel of the bar stock, a marking roll engaging the stock at the side thereof opposite the side supported on said stock supporting and moving rolls and with its axis in a plane between said stock supporting and moving rolls, a marking roll engaging the stock in direct opposition to the rst mentioned marking roll. and a stock guiding and presser roll for engaging the stock in direct opposition to each feeding roll, a pair of frame members disposed in parallel spaced relation with iianges oppositely directed, a slide block rotatably supporting each said presser roll and the rst mentioned marking roll laterally of one said frame member, the blocks being slidably mounted between said frame members, a presser bar traversing the frame member flanges over each block, an adjustor screw attached to each block and threaded through the associated bar and adjustable to positively move the attached block toward or from-th@ am of travels. oxhebmf. stock. 6x" from, or -txcmrami` sad assccaciedf Y twm compression sprmgs. overlying. theend on each-ban safer the flangiay `V'n1,am:est, the 'presser` andL -boek carried marker romand. alsmgle' compressionspring averly-ng'the' end oveachs barvoverhe other fram-ge,Q said` springsA canstaintlyurgfing" the bars toward. lthe path ot travel offthe'v'baristoekto yeldably press the -associated.k presser wmfor markingrolI- vaxfgainst said' steak.

CHARLES A. ZAROBSKY.

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