US969319A - Drill-feeding mechanism. - Google Patents

Description

D. s. WAUGH.

` DRILL IEEDING MBCHAIIISIIL` nrmcnxox FILED rm. ze, moa. I Y

1^ Patented Sept. 6, 1910.

' Hanns-amm' 1.

" `n. s. WAUGH.

DRILL FEEDRG MBCHANISH. l Y

Patented sept 6,1910.

allunga* atto/nus,

3 SHEETS-SHEET 3.

mwfhw mi, xe l is Tonnen sfratgnsragnnr OFFICE,

DANIEL SHAW WAUGH, 0F DENVER, COLOBADC, ASSIGNOR TO THE DENVER ROCK DRILL & MACHINERY COMPANY, OF- DENVER, COLORADO. A. CORPORATION OF CoLoRADo.

To all whom it may concern: f

Be it knowinthat I, Daniel. SHAw lVAUon, a citizen of the United States, residing at Denver inthe countv of Denver and State of Colorado, have. invented a new and useful Drill-Feeding Mechanism, of which the following is a specification- This invention relates more'particular-l)r to In the. use ot these mechanisms, when the.

drill or other instrument is being operated downwardly,v the. pressure of the. ytltiid oper ated feeding .means and the weight of the mechanism may be .so great that, considerable diftioulty evperieueed in ettecting the necessary turning nioven'ients, and one. of the iinportant objects of the present invention is to provide means for producing a variable pressure. upon the motor` said means being?r so arranged that when the workinzgr hlow is delivered. the desired holding pressure yis secured, and this pressure is relieved sittlictently dur'- ing..r the return stroke to permit the drill or other device to he turned.

Another object is to provide an arraugenient in which certain et the elements pertorm a plurality of' functions. and the various operations are controlled by a. single valve. thus greatlysimplifying the mechanism and also n'oducing an appa atus that can be .success olly operated bv an unskilled workman.

An emlmdiinent of the invention that is at present considered the preferable one is illustrated in the accoinpanyingr drawings, and is described in the followingr specification. but it will be evident by reference to the anpended claims that the invention is b v no means limited to thc strut-ture disclosed alid that the same. ma)v be materially modified and changed without departing' from the spirit or scope of said ii:\en1ion.

In the drawings:-l`ioure l is a' longitudinal Sectional view through the structure,

DRILLQFEEDING MECHANISM.

Specification of Letters Patent.

I Application filed February 29, 1908. Serial Ho. 418,520.

Patented sept. o, 191e.'

showing the feeding;r means in' inoperative position. Fig. 2 a longitudinal sectional view at right angles to Fig. l. Fig. 3 is a longitudinal sectional view thatis; diagrammatic in its` character illustratingr more partlcularlv the pressure controlling mechanism. Fig. l is a cross' lsectional view on an enlarged scale through the controlling valve. i l 1.". 5 is a cross sectional view on an enlarged l scale and. on the line 5 5 of Fig. l. Fig. tt' is a cross sectional view ou an enlarged lscale and on the line G-t of Fig. Figc. T is a side elevation on an enlarged scale of the controlling valve. Figs. 'S 4and Si are sectional views on the line 8S of Fig. si. butshowing the controllingr valve in different po-` sitions. Fig. l0 is a `sectional view on the line 10 -10 of Fig. 4. Fig 11 is a diag-rammatic. view illustratingr the arrangementy of ports;

Similar reference numerals designate. corresponding parts in all the figures of the drawings. f

In the en'ihodiment illustrated, the motor for the drill or other instrtnnent, is designated geueralltY h v the reference numeral il. and the motive fluid operated feedingT means is in like. manner designated bythe reference .numeral 1:2. The'inotor comprises zt cylinder 13 within which operates a reciprocatory piston il. this piston ope ating against a tappet device'l located in `one end of the cylinder and operating against' a drill 16 or other instrument. that is tilted in a suitable chuck carried b the free end. of the c-Vlinder. Y i

The motive fluid feedingF means consists of a cylinder l5 located' in aliuciuent with the cylinder lll and having a reeiprocatory piston'arranged therein. This` piston, as shown. more particularly in Vig. 2 consists ot' a head l2) havin one end recesscd,as shown at it) turecelvc a packing disk or. -asher 1 formed of leather or other suitable mateiial. cated :igriina the-packing washer 91. and a pin 223. earried b v the, head 19,A parses through the washer Ll. and is eng-aged with the. waflier QL. i. holding screw "ll passing through the washer. is threaded into the 105 secured to the outer end ot' the c vlinder 11.9

.\ holding washer 22 is loloo run,...

and terminates in' a. spur or pointl 27. The cylinders 13 and 18 are connected by a body or connection 28 integral `with the head 29 of the motor cylinder 13, the body or connection 28 bein fitted within the c linder 18 and suitab y clamped thereto y a split collar 30. The portion of said body or connection within the cylinder, vhas a recess 31 into `which the-head 25 is movable when the piston moves to its innermost position,

and an annular internal groove or seal; 32

arrange-u within the socket 31, has therein a split holding washer 33 that frietionally en' gages the head to hold the-piston and Apiston rod or stern in their innermost sitions, when the parts are inactive an the `drill liszvlieing transported from place to place.r y

The body or connection 28, which constitutes the connection between the two cylfaders, is provided with a transversely disl posed tapered valve seat 31 in which is 'rotatably mounted a master controlling valve 35, the smaller end of said valve projecting suitable means.

from one sideof the body orconnection and having a suitable operating device 36 secured thereto by a pin 3f? or by any It will be noted by reference to Figs. 1 and 4 that the lar er end of the valve terminates short of the arger end of the seat, which is internally threaded, as illustrated ai 38. A nipple 39, screwed into V said threaded end of the seat, has a supply channel 40 that communicates with said end, and a pipe 41, leading from any suitable source o' supply of motive fluid under pressure communicates with the channel 40. By

- this arrangement, the pressure of the air is directed against thelarger end of the valve and serves to keep it firmly seated.

The means for effecting the operation of the piston 11 bvthe motive fluid supply through the pipeu41, need not beset forth in.

detail partially because said means constitutes tie subject-matter of a. separate application, tiled March 24, 1908, Serial No.

422,895 and partially because, in so far asl f lateral 'port 48, communicating with said recess, 1s movable into and out of register with the port 46. Another port 47", leading from the chamber 42, has communication with a snp ly channel 48 leading to a oint behim. the piston 14, communication etween the port 47" and channel 48* being g v f o sessie controlled by the reciprocatory valve'44, andsaid ,valve also constitutes means :tor con- .trolling the exhaust.v With this structure when the port 48 is registered with the port 46, motive fluid supply, preferably air under pressure supplied through the pipe 41, will effect the reciprocation of the piston 14,'and

`said piston striking the tappet 15,' will effect a relative'reciprocation between said tap t and the cylinder 13. The drill or other 1nstrument, as 16 therefor located in the chuck 17, will therefore receive the force of the blows delivered by the piston 14.

A port 49 leads from the valve seat 44 to the interior of the cylinder 18 through the recess or seat 31,\and a port 50, leading from the recess 47 in the end of the valve 35, has its end movable into and outo register with saidort 49 so that thermotive fluid can be supp ed to' the cylinder 18,v and against the inner end of the piston. ,The

valve 35 also has an exhaust channel 51,

that. is movable into regidor with the port 49 and entends throu h the projecting end of said valve. It wil thus be evident that der 18, in order to. force the piston outthe same.. This will be evident by referby turning the valve' 35, either the supply port 50 or the exhaust port 51 may bel -brought into communication with the cylin-V ence to Figs. 8 and 9. Furthermore when the supply port 50 is in communication with vj not e brought into communication with the supply port 46.,` For instance therefore, if

the port 49, the supply port 48 may ormaythe ports Piland 50 are brought into communication without opening communication between the orts 48 and 46, then the piston rod 25 will moved outwardly before the Amotor is set in operation.' On the other hand, if the ports 49 and 50 and the ports 48 and 46 are simultaneously registered,

then the motor will be operated, and a constant pressure maintained against the piston of the feeding means.

- As already suggested in the preliminary portion of the specification, when the motor 1s in certain positions,` or if the pressure of vthe motive fluid is'great enough, diliiculty may be experienced in turning a drill. To avoid this, means are provided for varying the pressure, in the present embodiment, the pressure being relieved during the return stroke of the piston. To this end, it will` be noted particularly by reference to Figs.

' 3 and 4.'- that the cylinder 13 is provided with a motive fluid conducting channel 52, which leads to the valve seat 34, and has a plurality of ports 53 and 54 communicating with a portion of the bore of the cylinder 13, in The connecwhich the tappet 15 operates. tion 28 between the cylinders 13 and 18 is provided with another port 55 that communicates with the valve seat and the cylin- 969,319 i i 1 V '3 ler 1H, :ont the ralro 35 has a channel 5G, which eonstitutes the means of communica- -ion between theV channel and port 55 when said valve 35 is in a .)n't'deterininetl position. A motive vtlnid sulipl)v ehannel fr? isfalso formed in the cylinder lil and the rotura-Lion fit", said channel T. us shonn in Fig. CS. leading front the valve seat andino'- inn ports arranged iu `Hthstantiallr the sante plata-s1 with the porte. .52%. supply port itt), iorxned in the taire 255, ronnnnnitutes at one end with the reet-ss 4T in the end of said taire, and hits its other end xnot'ahle into retrist'ernith the eltanuel 57% when the ehannel .'i of the ralre connects the channel .3:2 and the port .7.3. This arangenient is seein-ed when theA supply port 48 of the valve regi-ters with the port 4G. through which iiiotive iuid is supplied to the motor. An

exiansit thannel 60 is furthermore formed in the t-.vhntler 13. and as shown 1n Fig-r. 2,

onnnnni ales with the exhaust port ttl for the nit-ttor.' This channel has its inlet end inthe Yorin of a port 62 that is in line with the por; :'Yt ot' the. eli-anne] 52. as shown in Fig. il. .ts already stated, Fig. 3 is some- "what diagrannnatie in its character, in order 'to illustrate the association of the different ports. As a matter of fart, the channels antlf are not diainetrieally opposite, and the exhaust' port trl does not open di rettili tl'irough the side of the eylint'ler. but the operation ot' the strueture rCan he tuade nuwe-plain livr reftnenee to said figure. lt. is to he observed that the. tappet v is provided with annular {fro-'wes 53 and l(il. the groove (i3 rttgistering will' the ports" 53 and .'.^f alten the tappt-l niort-s outvardly with tvl git-etto the evinnler` under the arti-n tt lnpiston l l. .1nd thtl lgro we (it bringingV the mais and 6; into ronnnunieation when lthetappet isin its innermost position.

'i'lse operation 'oi' the lntz'ltnuistn nt:t lie lairjs de-=uriht1l as follows. `dhen the aplpuntos; is not in use'. the pist-zn in tit fred I tlitrlt-r )N is prefuraltlt plat-ed in i;- in ttt-i =-'t p.'-ition il: wliitli vase. Ille lte-t=l 2f will he grasped 5') the holding' asin-r Il. and f'onsetpteot't the pare maintain-l in t't`la`tirt'i-t' intra-mhhrelntior. upwardl'i' t-nt-ntlin ole with this tir-:chine the point or .spur iii ol the pis-ton sterf. ."'J is plm-ed again# a plan: or cleer support :tt the hrolter distant-e troni the rorlt overhead.

the suppl)v port .'-tt into t-omrmjoieettion nith the port lll. nlivrenpon the all'. admitted fn tl'tt tylilttltl' lf". lll I'Utl't tin [listturzab werdly und l'ringz 'the dri?" t np to th'l roalr. A further rotation ,.-tl the salve will tiring;l theport l. into ennainnnirationtith 'f in :lrillingi the port -lt and thus adntit the air to che .motor so that the piston l-l will he rrripro-l eateil. striking the'tappet 1T. the hlor wing thus communicated to the-drill steel 16. 6

The operator rotates the'xnarhine hy means of suituhle handles. one of which is shown at 64a, thus turniner the drill while thentotive fluid feeding means always holds sain ,drill to its work. vat-diy extending hole with the nutehine, there is often so uint-h pressure against the roelt tine to t-.oinhined weight of the nntth'ine and the pressure of the feedingr means, that said machine :annot he readily rotated h v 7 hand.

\\'liene\'er surh a condition occurs. the valve 3? is given a further rotation. .rhieh will bring,r the ports 4S and lt into full register, at 'the `saine tinte. bringing the port. and Channel 5T into register and ron- 80 netttngr the channel 52 and port h t' ni xaus ot' the .channel 5G at the same time -arr \'in f the ports 1.2 andt) ont of eonnnnnieatton.v "hen 'the parts are in this position. hoth In drilling a downthe ports .-31 and are out of register with 85 the port 4t). Then so arranged and the tappet 15 is in its innermost position. as illustrated in Fig. 3. it will Vhe evident' that the. airin the cylinder l5' can exhaust through the port 5:3, tht` channel .'tt', the 90 hannel 52. the port 5l. the groove ttl, port tizi and channel (to. When. however.- the piston delivers its workingF hlon' against the tappet 15, a relative inoventent between the eylinder lll and thetappet 15 is etl'eeted. ln 95` other words, either the tappet 15 moved outwardly. or. 'the e'vl'i'nder moved rearwardly. This therefore tat-ries the groove (il ont of register n 'ith thtl ports 5l and (32.k

cutting otl' the exhaust front the cylinder 1N.v 100 but the saine uio.' 'ntent brings 'the groove tti-l into alinexnent with one el' the sets ot' ports 55S and 5s. The result is tltat motive tluitl Iiouing through tltrhannri 5l'. will pass Alnerltanisnris oht'ained at the 'tinte the lilou" thronglh the ports 5h'. the `:groove tihztnd 105".v

is delivered to the drill. :tn-l as soon as the' 110 piston tl tarts haelt. the tappet l5 returns. agrain opt-ningl the exhaust :ind relieving the presauie t that the ran-Laien' van turn the drill. lt' will thus hf. eviden-I; that the presure in the feeding '.nvcl I... in is automativ :illy regulated h the movi-nient vi' the tapprl. whit-h in tnrn is moyrfl h t' the pif-ton and l\ the vilvration ot the machine mused 'ny said piston. ln, this muClfitie. wenn@ :tre pret'eraiiir provided iter peas-.titiller tle ilott' oi' *water or air into the drill hole to than the vnt'iing tw-ret'rom. To this end. a snpv plv pipe 4.37 is' t'iopl: \'ed. whirl! is ronnetted 1.o the ripple Ill). and 'oininunnaies with tl-.e rhannel tjt in said nipple. 'l`hi-Y haunt-l rontnntnittes with 'anwlu'r eltannel t?? iu in t.\'lln.ler ll tlm( ltmlsto :t t'lmlllllt'l (is pet. 15 is provided with ports (39 vcommunieating with the chamber 68 and with a bore 70 formed in the drill steel lt. y

From 'the foregoing, it' is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art.. without farther description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction, may oe .resofted to Without departing from the s irig. or sacrificing any of the advantages of t e nvention. i

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is f 1. In a structure of the character set forth, the combination with a motor, of motive fluid operated feeding means for the motor, means for supplying motive fluid to the -feeding means to move'feinotor Ato its work, and means associated Withthe supplying means and automatically erated by the motor for governing said supp y.

2. In a struct-ure of the-character set forth, the combination with as'inotoig ofv motive f fluid operated feeding means for said motor,

means for i directing motive duid to the feeding means and means controlled by the operation of the vmotor and associated with the directing means for controlling the supply of motive fluid to the feeding means.

3. In a structure of the character set forth, the combination with a motor, of motive fluid operated feeding mea-ns for said motor, means for supplying motive fluid to the feeding means to move the motor to its work :1nd exhausting said motive fluid from the feeding means and means controlled by the ing means.

operation of the motor for controlling ythe exhaust of said motive fluid from the eed- '4. In a structure of the character set forth, the combination with a motor including :i reciprocatorypiston, of fluid operated feeding means connected to the motor and com prising a cylinder and a piston operating in the cylinder, of means for supplying rnotive fluid to the cylinder for moving the piston to its work, and means controlled by the motor piston and associated with the supplying means for controlling said supply of motive fluid. V

5. In a structure of' the character set forth, the combination with a motor including a reciproczitory piston and a vtool-engaging tiippet operated by the piston, of fluid op erated lfeeding means connected to the motor and comprising a cylinder and a piston operating iii the cylinder, and means for controlling the operation of the feeding piston, including a motive fluid conducting channel controlled by the tappet.

6. In a structure of the character set forth, tlie combination with a motor, of fluid operated vfeeding' means for the motoryand means for' :fz: iplying motive {luid-to-y the.' feedingIr inc nis including a motive fluid port,

said motor including n device movable across the port for controlling the same.

. 7. In a structure of the character set forth, the combination with a motor, f {luidop-V crated feeling. means therefor, und means for supplying motive fluid to the feeding iin-:ins including a motive fluid conducting channel, said motor includingan automatic-,- Y

ally operated device havingnieans for controlling the supply and exhaust of' motive tlnid through the channel.

` 8. In :i structure of the character set forth,

the'combination with a iiiotor'including a cylinder and a lirico inoi'ahly mounted in 'the c lindcr. ol' *'ccding moansconnected to the motor :ind comprising :i f.i \liiidcr :ind a piston operating in the cylinder, said motor cylinder having'a motive fluid conducting channel thf-.tcoinmunicates with the interior inder.' said motor cylinder having a motive A Y fluid conducting channel that c-'.iiininnicates with the interior ot' the feeding cylinder. a supply channel and :in exhaust channel, the movable device of the motor lisffin for bringingY the supply channel ant the eX- hanst channel into communication with said motive fluid conducting channel,

,10. In a structure f the character set; forth, the combination with a motor, includmeans .k

ing a cylinder, a piston, and a tappct device n loperated by the piston, of leerling nit-ans connected to the motor and comprising :i cylinder, and a piston operating in the cylinder, said motor cylinder having a motive fluid conducting channel that communicates with the interior of the feeding cylinder, being also provided with :i supply channel, vand an exhaust channel. the :appt-t of the motor having moansl for bringing the sup-y j ply channel and thc exhaust channel alterf nately into mmmuiiication with the conduct# jing channel.l Y

Il. In a structure of the character set lic `i forth, the combination with a motor includ- Y -ing a cylinder, u rcciprocal'ory tappct oper ating in the cylinder and a reciprocatory piston operating againstv the tappet, of a. 'Y i feeding cylinder connected to the motor Ycyl'- inder. :ind a piston operating in the feeding cylinder, said motor cylinder having a mo tive fluid conducting channel that communicates with the interior of the feedin cyliiider and also haring a supply charme and isc worltinjuIr stroke of the motor, and Iraans for an exhaust rhannel, the tappet being ploaut'omatieally relievinfr such pressure dur- 65 vided with ports that respei-,tivcly bring the ing the return stroke o the u'totor. supply channel and the exhant channel into 16. 1n a structure of.' thev character sul; `(-.ornnnzniofttion with the motive luid con forth, the eomhination with a motor cont- '5 dueting eltannel upon tho reeiprocation of prising a cylinder and a rcciprocatory piai f said tappet. I tou operating therein, ol feeding means for 70 1'2. 1n a structureof the character set the motor comprising a cylinder and a pisforth` the combination with a motor inrrludton operating therein, means for conducting! ing,lr a. cylinder, anda device morality mouutmotivo fluid to the cylinder of the, feeding f ed in the cylinder, ot feeding means coumeans to niovc the motor to its work. und fr ff' heated to the motor and vcouit'uisingg-' a. cylinautomatic moans for contrt'illing said Suf 75 de' and a piston operating in the cylinder.l plv of motive fluid and maintaining the Y saidY motor oylinder having a motive fluid pressure thereof in the cylinder wht-u tho l oondueting channel that rounnunieates with motor pistou completes its operative stroke the interior of the feeding means. a supply and relievingl .Qutgh pressure during;r the rekChannel and an exhauat channel, the Inovturn 'stroke of said piston. I 80 f ahle device ot' the motor having means for 1T. In a structura of the, character set bringing the aupply channel, andthe exhaust forth, the combination with a motor com- Channel` into eomniuuieatiou with said inoprisiug a cylinder and a reciproa-atoutv pisn tire ttuid conductingchannel, and a common ton oneratitngr therein, of foot-ling means for l valve for controlling the-supply of motive the motor comprising a cylinder and a pis- 85 Huid tothe, motor and to the suppiy ohanneh ton operating therein, means for Condat-ting' Q v .t5-i. ln a. Structure of the char-ader avt, motive fluid to the cylinder of the feedingr forth, thecomliination with a motor c vlitrtueansito move the motor to its work, and de anda feeding cylinder. of aeonneetion automatic means: operated hy the lnot'or pisf hutwetn the. qvlinders, -aid miuuertion hat tot: for controlling Said Supply of motive Q0 ingr :t valve seat and a port leading troni the liuid and niautaiuin; r the prewure theteol' I vulve sont to the feeding olvliuder. the motor in the cylinder when tht: tnotor iiaton co ul Cyliflfhl living provided with a Ianpply t-han plvtes its operative -"t1-olie and re ioving .-.ut h

nel andl a motive Huid. conducting t-hannel preaaure. dnriugr the return stroke ot said that also connuunit'ate; with the Valve Seat. piston. S5

the connection furilwrmore haring a aupif'. In a Structure` of the characteihsotf ply port. for delivering motivo iuid to the forth. the combinationwith a motor ineludf motor cylinder, means tor supplying inotiie iin"t a reciprocatory piston, of ttuid operated v fluid to the valve seat., a rotary Valve located feeding meansl for the. motor, a conduit for l iu the seat. and controlling the. various ports amply-ingr mot-ive fluid to the feeding means 100 `and channels` the motor cylinder furtherto hold the motor to its wtfln and rontt-olf more having an exhaust charnel, a piston ling means for the motive thn! supply oporn Operating in the feeding Cylinder; a piston ating across the, ronduit and automatieally n 140 operating;r inthe motor c vlint'ler, and a tap'- operated by the. motor. v

' pet nnivalily mounted in the motor cylinder 19. In a strnt'ture, uI thtl rharatzter svt 105 ,i and opt-,rated by the pistou` said tappet. heforth; the tannhnatiou with a motor iutlud ing provided wit-h annular grooves for iut'r a reciproeatory piston, ot' fluid o ierated f hringing ino motive fluid supply channel feeding moana for the motor, means orsupand -exhaust channel into communication pt t'ing,r n'iotive. tiuid to the feeding means;l l

with the motive (luid conducting channel tu hold'the motor to itsfwork and exhaust- 110 alternately upon the; reciproeation of the ing the same from the feeding tneanS, and f tappet. controllinglr means for the motive fluid supi 1st. Tn a structuli'of the charactersetply and exhaust operated by the, motor forth` thel combination with a rcciprocatmv pistou. Y motor. of fluid operated feet'tingrneanf.there.- 20. in a Structure of the character set *115.

for. means for supt'il'vinrt motive fluid to the forth, the combination with a motor, of fluid ,`feudin;1 means to hold tho motor to its operated feeding means for the lnotor, and work. and n'teans for autounttivally relieving automatic 1nean ft alternately admitting the prenant-e of Iut-h inotive tluid at eat-h motivo fluid to and oxhauSting it. from tho Sql-0k@ of um mim- {eedingnteans while the motor is in opera- 120 i 15. In a structure of the t-haraoter set titi-n. l forth, the ootnhination wh' .r reciprot-atwry' 2l. In a structure of the character setmotor, of fluid operated few ting means. tht-reforth. the continuation with a motor, oftluid for. means for snliplyinp :nativo Huid to the operated teet'ling means for the, motor, and tending' moana to holdA the motor to it automatic tnt-ans operated h v the motor for 125 wnrlt. means for `ecnritugI a holdin; r pressure alternati-lv admitting' mot-ive Huid to and i ot' motive, tiuid at. the completion of the exhausting it from the. feeditui,r means whiloY the motor is in operation.

22. In a Structure of the character set.

' forth, the combina ion with a motor, of Huid operated feeding meansfor the motor, and

means for automaticallyY angl periodically varying the motive fluid peseur'e in the feeding `means While the motor 1s 1n Vopere.-

23. kIn' a structure of the '-oI-iai'acter set forth, the combination with a motor, of uid operated feeding means for the motor, and a tool-operating tappet operated by the motor and constituting means for governing the supply of motive Huid to the feeding means. n

24. In a structure of the character set forth, the Combination with a motor including'aeylnder ande piston operating in the cylinder, 'of fluid operated feedi11g means for the motor, a motive fiuid conduit havi in sections located in different walls of the c y inder and yeon'imunicating \vith the feeding means, and a tooi .operating tnppet opthe communication between the the conduit.

In testimony, that' I claim the foregoing as my own, I have hereto af'lxednxy s1gneture in the presence oi two witnesses.

, DANIEL SHAW AWAUGrH. 'itnesses: f t l W. H. LEONARD, H. E. Hfuuuo.

sections o Aernted by the motor piston and controllin A

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