US79034A - Richabd uken and john walker - Google Patents

Description

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RICHARDUREN AND JOHN WALKER; on Ho'GHTo`N,MIGHIGANQSIcNoRe.

A To THnMsnLvEs AND JoHN UREN, or 'run 'SAME PM@v o l Le'ttersPatent No. 79,034,7dated Jme`16, 1868.

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' TO ALL WHOM IT. MAY CONCERN:

Be it known ther.` we, Riemen UnrN. and .Tomi WALKER, of Houghton, `in the county of Houghton, 4und State of'Michi-ga'n, have invented o. new and improved Stamping or Quartz-Crushingll/iachine; and we do hereby declare that the following 'is s full, clear, and exact' description thereof, which'ir'iilenable others skilled in-the crt 'to make und use'the same, reference boing ,hnd'hto the accompanying drawings, forming part ofthis specilication. v

Our improved stamping or 'quarts-crushing machine is' of Vthat class wherein the pistouis connectedfdirectly to the stamp-heed, without the intervention ofc driving-shaft and crank, .in which it is desirable/ to operate the stump soth'at it may have cvarinble throw. of the stamp effected by an automatic valve-movement; and consists# First, in providing supplementary cylinders and pistons, at euch end of the main cylinder, to'uct as cushions, against whichA the'force of 'the stcl'mp-pistoii mcy be expended without damage, whenever, from any cause, the piston-will b e forced against the ends of the steam-cylinder. Second, in providing a variable automatic cut-off to. regulate the amount of stesm ndmitted'to the cylinder for raising the hammer orstemp. i Third, in `prcvidingarx adjustable outlet, 'which ninybe so graduated as to regulate the discharge ,of water and pulver-ined ore from the machino,' Fourth, inproviding the stamp-hond withunage of such shape as to throw the water aua pulverised ore j fjagainst the screens, in a menn'e'umore readily to seperate the ore sind; discharge the pulverised portion'froxii tho v .machine. e Fifth', in providing, through thebottomof the mortar, an outlet for those particles of ore which do not' become suiiiciently pulverized to' pass through-'the screens; and which' usually in 'the machines, as now con- ,1- structedfbecome packedin 'the mor'tsrs so as to be diiicult'to remove. v- V.` Having described the nature of our invention, we will proceedtodescribeits construction and operation, reference being ha'd 'to the accompanying drawings, in 'which- Figurel represents a front 'elevutiorn 'Figure 2 representen. side: elevatioml'oueof the supporting-posts .being removed. Figure 3 represents svertici section of thec'yliuder 'and valve-chest on line e e. Figure 4 representen vertical section on' line d b oil-iig. 6. Figure 5 representen4 vertical section on lne'c of tiig.6 Figure @represents a section o nlin'e'ol al', showings pien of thc mortar. Similar letters of referenceindicate like parte. A is the supporting-frame, consisting of two horizontal sills, supported upon a suitable bed, from. which rise two vertical posts, connected together by suitable cross-ties, betweenwhich posts the machine'is secured. Y B is the mortar; G, the verticnl stamp-shaft, which is secured-to the piston-rod, E, by meansoi thejiianged coupling, D, and which carriee,ct its lower end, within the mortar, the stump C.

G is the 'steamecyl'ind-er 3 H and H are the supplementary cylinders.A F. is the piston', to whichvthe .piston-rod E is secured. '-N and N are val'vechests,.in which thel rotary valves, 0 and O', are 'aricngedto eilect the opening and closing of the induction and'eductionlports, as will be hereinafter shown. t

9 and 10 nre steam-pipes, affording communication between the boiler and supplementery. cylinders H und. H. -1-1 and 12 are check-valves inthe same. The diameter of these cylinders and their pistone-is' greater than the diameter of the mein cylinder and piston, v K a'nd Kl ajre'tw cross-bars, forming e yoke-when connectedl together' by the vertical nids K, to which yoke the supplementary pstonJ'is connected by its piston-rod. l

Lis a connecting-bar, to which the rods L andi? of the'supplementnry piston J! are secured, alsorforming eiyoke, t f

h is avortical oscillating-shaft, supported at its lower end by one of the crosssties of the frame, and at its upper end in the projecting end of. the bracket, R. z' is an adjustable cani-.on shaft h. 'zc s'a iixed Vcam upon vthe same shaft. y is a crank, secured tothe cam 'zand to the shaft It.v :lh'is crankis connected to the crank ':n one end of the roch-Shaftsx byV the connecting-rod 'y'.

The horizontalr'ockshaft S is supported at one end in beariiigs in the bracketlt', andlat the otherend in bearings in the bracket R, and has secured to itsv end, near the bracket R, a. crank, l, which is connected to th o valve-stems P and P by mcans'of the conneeting-rods W and W andcranlcsQond Q.

On thei'ocli-sha'ft S, insi`dc of tlic bracket R, are lsecuredh-crank, Y a nda cam, p; Toi theouter end ofthe u crank Y is securedtlie uppeivend of lthe 'springt by means of connectingdod u. The lower end of spring t .is secured tothe'horizontal rock-shaft 7'. The said shaft r has a bearing in one of the supporting-posts of the machine, and 'at its end, opposite to' that-towhich the spring is secured, carries a'segment of a disk, which has, near its periphery, a curvedslot, through which slot a set-screw works', by which means the vtensione?. the

` spring t may be adjusted.

Projecting upward fromI the top of-tlie l-ixioi'tzir B isa rod, m, which,"a't its'upper end, passes through the spring mand is held down to the spring n by means of a nntion its upper end above the said spring.' Through the outer end of spring n-works the verticall spring-catc'lio, whichr is secured .in its place by thc guide Z. Around the lower portion of the said spring-catchl oiis arranged a'coilod spring', which hasn constant tend- .ency to force it upward. Near the upper end of -tlie springt-catch it has a projection, which. extendsal short distance inthe line of tr'avcl'of the cam p, and is curved to a circumference equal to that describedby the outer Q end of'y the said cum p, the upper end ofthe vertical portion and the outer end of the curved projection consti-i.4

tilting a' doublecatcli.

va is a horizontal shaft, 'suppoi'ted 'in bearings upon tlie supporting-posts, to vwhich is secured the carni about midway between the pos'ts. At one cnd'is secured the crank c, to the outer end of which are coniincted"Y the valve-rod d and valve cl.

j' is a water-tank, which receives its supply throughthe gaugecock g. Within the. said tank is a oat,

which is connected to. the levery by the'bentirod le.' The said lever 7' hasl a fulcrum at Vone 'cud in the bracket R', and is forked :itv the other cud, so as to take into, the annulargroovein the adjustable cam Oniieference'to figs. d andz, 19 represents the adjustable outlets, which, in this example, consist of ordinary stop-cocks, but which may be made in any/suitable manner; 18 represents the screens, one of which is arranged inA front of e'ach ofthe outlets; QDshows an aperture, through, which the' ore end wa'ter maybeconveyed to the mortar; c2 represents a flange upon the top ofthe stamp, the under side of-which is curved, so that when it is plunged down into the water, the latter will be thrown violently against the sc'reei'is; 21 shows an .l

aperture, passing outward from the centre of the bottom oi' the mortar; 22 represents a slide, for closingor opening the vsaid aperture; 23 represents n. spring-bed, upon which the `mortar rests, of suiiicient iiexibility to allow it to yield under the blows of the stamp.

The operation of our machine is as follows: v i The posiitionoi` the pistonV being that represented inig. 3, steam will be admitted below it, causingt, vtogether with the piston-rod and stamp, to ascend until the upper face arrives at a position ncarlyon a level with the inductionport 13, and the upperportion of thc coupling D nearly to thelower cross-bar K1 of theyoke'. Diiringthe ascent te this point, the couplingd? comes in contact with the cam z', s c as' to cause a partial revolution ofthe rockJshafth, whichl communicates a similar movement to the roch-shaft S, through its connec.- tion with the same. The camp on the shaft S is, by the same movement, caused to' pass over the projecting j upper end of the spring-catch oz, which is forced np,- by the spiral spring q, behind the end of the said cam or tappctp. The same movement of rock-shaft S' operates theya'lves O and O tosiich an extent that the valve 0 shuts off the admission of steam below the piston. The piston is continued in its ascent'by the expansion 'of the steam already in the cylinder, during which further ascent the .oouplingD comesi'n contact with the 'cam w,

also on tho'rock-shaft 7i, causing, through the same connections, a further oscillationof shaft S, moving the l camp beyond the end ofthe curved projection onthe spring-catch 0,.when it is again forced up behind the end of the cam by the spiral springv g. The cam rests againstfthis projection until the lesceut of the stamp.A

By this second movement of the shaft S, `thc valvcO is again moved,`so as to open communication between t the induction-port 14 and the ezhaust-portl, and the valve O is movcd so as to open communication, through the induction-port 13, with the-upper end of the cylinder and the boiler. The valves are held in this position, v

by the springgcatcli o2 and cam p, against the action of the' spring t, until the-stamp hnsdcseended upon theore b v Y n 4 a i `in the mortnr,"wliich it does with such force :is will deflect the spring-bcd of-the mortar in a downward d iiection,

by which operation the rod m communicates a downward movement to tho'spring-catcli ce through the spring 7i,

.and disengages the said catchfrdm the cam y, when the spring t throws the valves back to the original position', tb shown in'iig. 3, when steam will again be admitted below the piston, and the operation continued as long 'as'- it may be desired. To avoid the damaging ed'ect of thepiston striking the uppor'or lower cylinderrhead, as is often the case iti-machines of this class, wherein the movement of the piston is not governed by a crank and connecting-rod, We have provided the 'supplementary cylinders H H and pistons J and J.

When the piston,l in its upward increment, has received an impetus greater than is suiiicient to elevate it to' 'thc proper height, and just before it would strike against' the supplementary piston J, the coupling D will etrike the lower cross-bar K1 of the yo'ke, which communicates motion to the piston J in an upward direction in the cylinder M, which is filled with steam of an even pressure of that 1n the boiler: The check-valve 11 prevents the escape of the steam, and causes it to act as e cushion, completely overcoming the action of the piston F,

without domage or train to the machine.

In the downward movement ofx the piston and shaft, the same operation takes place when Athe coupling striiresthe connecting-bar L of the lower yoke.

In the operation of stamping-mills and forge-hammers, having an automatic valvc-attachment, it is very often the ease that, by reasonof the variable height of tliem'ss upon which the hammer or stamppis operating, and fromother causes, theaction of the valves will be also' variable. Th'eoperatiou ofthe mechanism which I have prvidd'to overcome this dieulty is as follows: l

'I he sliding com is placed upon the shaft IL, so as to slide freely up and down thereon. Its positionv on the shaft it isrgovernecl by the height of the water in the tankf, acting through the lloat Z, bent roti 7c, and lever je The cam b onthe shaft a is'arranged at such n position that when the'piston iscarried too high, the' coupling D comes in contact with cam b, oscillating; the shaft a, so as to raise the valve 2' and allow the water to escape, by which means the cam is brought'to-a lower position on the shaft h, andis operated by the coupling D in its next ascent at an earlier period of the saine to close the valve O'. p

. Onthe' other hand, `when thepston F does no t rise high enough, the valve e will not be raised so as to allow the water to escape, so that the constant supply will raise'tlie float` and oax'n z', and the admission of steam' will be cut oli' at a later period of the ascent. l Y

The operation of the ange c"z of the stamphead C', by'reasoun of its curved formation of the under side, is such as to greatly facilitate the discharge of the pulverized ore, by splashing' the water and pulvcrized orc directly against tho screens. y

By meanspof the adjustable apertures for the escape of theore, it may be so regulated as to pass oil' only so fast as it is delivered through the screens bythe action of the stamp,'efl"ectiug a very material saving in the quantity of water to be supplied tothe mill.

In the 'stamping-mills now in use avery serious diilionlty is-encountered,'by reason of those larger portions of ore, which-do not becouie suflioiently pulverized to pass voil] through thc screens,becomng packed .together in the bottom of themortur, the` removal of'wbich requires th'cstoppage ofthe niill, and considerable labor in taking out the screens, and the loosening of thc `compact 'massby the applicationl of the pick and crow-bar.

Non', all this diiculty iseomplctely obviated in ourmacliinebythe arrangenient,uf.- vthegdischerging-aperture underneath the stamp, so that such large particles will be forced into' and through the same by the action of the stamp, the slide 22 being withdrawn vfrom time to time'as the aperture'becomes full. V

' Having thus described the construction and operation of our invention, what we claim, and desire to-secugze by Letters Patent, is v 1. The supplementary cylinders H H' and pistons J J', in combination with` the cylinder G, piston F. vstomp G, and coupling'l),` substantially as described for the purpose specified. 2. The supplementary pistons J and J', iu combination with the yokes K Kl, L, stamp C, and coupling D, substantially as described for the purpose speeicd'. Y

3. The rock-shaft h, adjustable cams e', fixed 'cam x, and arm y, in combination with the coupling D and stamp 0,-substautially as described forthe purpose spccihed. p p

4. The crank-shaft S, cam p, connecting-rods W W', and valves O Q', in oombination'with the rock-shafth, eainsj z, coupling D, and stamp C, substantia-llyjas described for the purpose specified. Y

5. The'brolret R', lever j, and floats l, in combination with the cam z', stauifpC, and coupling D,`substantially asdescribed furthe purpose specliedi i 6. The horizontal shaft a, cam la, valve 2', and val'vcrodd, in combina-tion with the coupling lD, substan-V tially as described for the purpose speciliecl. Y

i 7. The combinationV of the springbed 23; ro"d'm, spring n, spring-catch o, tappet p, arms Y u, und spring t, substantially as described for the purpose specilied. A l

rlhe above specification of ourinvention signerlby us, this fourth day of February, 1867. A

l A t RICHARD URE'N, Witnesses: y JOHN WALKER. .Turnus HARMAN, A Cms. R., ZonN.

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