US2000458A - Adzing and boring machine - Google Patents

Description

May 7, 1935. G, B. SHIPLEY ADZING AND BORING MACHINE Filed May 17, 1934 '7 Sheets-Sheet. l

WITNESSES YM W y G. B. SHIPLEY 2,000,458

ADZING AND BORING MACHINE Filed May 17, 1934 '7 Sheets-Sheet. 2

WITNE SSES M ifwum y 7, 1935. G. B. SHIPLEY 2,000,458

ADZING AND BORING MACHINE Filed May 17, 1934 7 Sheets-Sheet 3 WITNESSES I I l INVENTOR May 7, 1935. G. B s EY 2,000,458

ADZING AND BORING MACHINE Filed May 17, 1934 7 Sheets-Sheet- 4 INVENTOR v wn-zSsss n I r flaw y 1935- G. B. SHIPLEY ADZTNG AND BORING MACHINE '7 Sheets-$heet 5 7 Filed May 17, 1934 y 1935- G. B. SHIPLEY ADZING AND BORING MACHINE Filed May 1'7, 1934 7 Sheets-Sheet 6 INVENTOR WITNESSES May 7, 1935. G. B. SHIPLEY ADZING AND BORING MACHINE} Filed May 17, 1954 '7 Sheets-Sheet m vv m. M n ma m MWN aw A ii-EN. WI

.25 Another object is to provide such a machine tion.

- 30 position.

Patented May 7, 1933 2 5 UNITED STATES PATENT OFFICE ADZING AND BORING MACHINE Grant B. Shipley, Pittsburgh, Pa., assig of to" The Wood Preserving Corporation, Pittsburgh, Pa., a corporation of Delaware Application May 1'7, 1934, Serial No. 726,017

- 10 Claims. (QL 144-3) This invention relates to combined adzing and clamp-controlling valve assembly taken onthe boring machines for railroad ties and the like. line XIIXII of Fig. 10; Fig. 13 a section Tieplates having various'numbers of spike through the valve assembly taken'on the line holes in difierent positions are used with rail- XII IXIII of Fig. 12; Fig. 14 a section taken road ties. In adzing and boring ties for use on the line XIV-XIV of Fig. 12; and Fig. 15

with tie plates it is, therefore, highly desirable a diagram showing the connections between the to have a combined adzing and boring machine clamp-actuating pistons and the valves conwhich is able to provide the ties with spike trolling the supply offluid-under pressure to the holes for registering with the holes in any parpistons. 10 ticular type of tie plate that a railroad may In explaining the construction and operation specify. In such machines known heretofore of the illustrated embodiment of this combined it has frequently been necessary to install new adzing and boring machine the general strucboring heads for'changes either in position or ture and operation will first be describedbriefly, in number of the holes to be bored. Furtherand then the specific construction of the various 15 more, the boring units of these machines are locomponent parts will be explained in detail. l5 cated' in inaccessible positions from which it is Referring to Fig. 2 of'the drawings, ties l are 1 difficult to adjust them or to remove them'for I 'carried'in spaced relation by an inieed conveyor replacement or repair. 2 to elevating members 3 on which a tie is It is an object of this invention to provide a automatically deposited every time the elevators combined adzing and boring machine with indiare lowered. The elevators intermittently raise 2O vidual boring heads, each carrying a single drill successive ties to a position between the open or bitv and each being adjustable in position jaws of clamping members 4 carried by a rotor relative to the other boring heads, whereby holes or carriage 6 which rotates intermittently, the can be bored in various positions and relations. .carriage having five stations'during each revoluequipped with a suflicient number of individual The jaws are automatically closed upon the heads to bore the maximum number of holes tie, preferably by pressure fluid mechanism, and r q i ed nd whi h an b re anv-r quir dn m- Y the tie carriage then carries the tie a short disber of holes in a tie withinthis m'aximum'in any tance. and stops. While the tie is stationary it u e Object i to Provide machine in after which the carriage carries the tie a short wh ch t e ad i a d boring tools are eadily distance further to the first boring station ,where accessible o adj replacement and thetie is bored by reciprocable individually adrep justable boring tools 3. The carriage then car- 35. A S l further O j t i to D a Cembined ries the tie to the second boring station where ad ing a d bo machine Which dependable it is provided with additional bores if required.

and efficient in Operation- Before the clamping members again reach the The preferred embodiment 0f the invention elevators they release the adzed and bored tie illustrated in the accompanying drawings which-falls onto a conveyor 9 for removal from 40 which Fig. 1 is a plan view with parts broken, the machine. c :40 away; 2 is a e View taken on the line" Fromthe foregoing brief description it is seen IIII of 1; 3 an end View taken on the that this machine comprises several major parts 1 of 2; 4 a Side View of the which cooperate in the adzing and boring of rotor-driving means Shown in 1; 5 an ties fed to the machine. Each of these major enlarged view with parts broken away of the p t 1 1 now be described in detail in 45 tie-elevating means Shown in 2; order in which they become associated with a longitudina V Of an adzing tool; tie passing through'the machine, the order besection of the adzing tool taken on line VII-VII m as follows; infeed Conveyor, elevatorsfgflf 6; 3 an enlarged end View, of the riage, tie clamps, adzing units, boring units, and

elevating means taken on the line. VIII-VIII tf d conveyor. 50

.55 line,XI- -XI of Fig. 10; Fig. 12 a View? of the posed shafts ll journalled at theirends in op-;

of Fig. 2; Fig. 9 a view taken on the line IXIX of Fig. 8 with the tie removed; Fig. 10 a longif conveyor ,tudinal view of the rotor with parts in section As best shown in Figs. 1, 2 and 5,the mfeed I and parts removed; Fig. 11 a view taken on the conveyor includes a pair of horizontally (118- is adzed by reciprocable rotating adzing tools'l, 30 I veyor framework. 7 'vided with a sprocket 28 drivenby a chain 29 passing around a sprocket 3| keyed ona short -shaft-321which is journalled in pedestal bear- "ings 33-at the rear end of the machine (Figs. 2 i and 3). chain 34 passing around a sprocket 36, keyed on v the shaft, and up and over a sprocket 3'! mountposite ends of a suitable framework l2. On the ends of shafts H sprockets i3 are rigidly mounted, the sprockets carrying endless chains 14 for transporting railroad ties I from one end to the other of the conveyor. The chains are provided at predetermined intervals with outwardly projecting lugs F6 for engaging the sides of ties to properly space them apart and to push them off the rear or inner end of the conveyor.

Referring to-Figs. 3, and 8, the conveyoris driven by a chain ll passing around a sprocket I8 keyed on the inner shaft H, and a sprocket l9 keyed on a cam shaft 2i belowit. Thecam shaft is journalled at its outer end in a bearing 22 mounted on an inclined I-beam 23 which =is fastened at one end to conveyor framework 12 and at the other end to an upright channel24. The inner end of the cam shaft is journalledin a bearing 26 mounted on a horizontal I-beam 2! which projects from the inner end of 'thecon- The cam shaft is-also pro- Short shaft 32 is in turn driven by a ed on a driving shaft 38 driven by a mainpower i unit39. This unit, which is mounted'on-a base 4| at the rear of the machine, comprises'an -electricmotor and speed-reducing gearing. ''As shown in Fig. 5, cam shaft 2! is provided :adjacent' its outer bearing 22 with a cam-42 adapted to periodically lift a rocker arm 43 rigidly mounted on one end of a rocker shaft 44.

'Another rocker arm 46 (Fig. 9)'-is rigidly mounted on the opposite end' of the shaft, which in turn is pivoted at its ends in bearings 14lattached to the upper ends of the inclined I-beams 23; at opposite sides of the machine.

arm 43 has a roller 48 journalled therein for hearing against cam i2, and, when the arm-is --oscillated by the cam; rocker arm: 46 at the opposite end of the rocker shaft is oscillated:in

' unison therewith. These rocker arms are'dei signed for reciprocating tie elevators 3' vertically,

while the infeed conveyor is inmotion, in order to raise successive ties from the conveyor to tie clamps 4.

Elevators The upright I-beam is con arm by a generally U-shape strap'54 'and' an eye bolt 56' extending through an openingin the closed upper end of the strap. The open lower end of the strap is pivoted on a bracket 51' attached to the I-beam, and the upper end of the eyebolt is pivoted on the free end of the rocker arm. A coil spring 58, disposed on the eye bolt,

The long arms of the" cranks extend beyond the Y endsof the-plate and have small rollers 64 journalledin their ends, While the short arms are Rocker i "bracket for breakingthe' fall of counterweight =12 when cam 42 moves-away from rocker arm stantially as wide as the widest of railroad ties. A plurality of tie-supporting rollers 6| are pivoted on opposite sides of this plate, above which they project a short distance for carrying a tie as it is pushed thereon from the infeed conveyor 5 ivided at both ends with inwardly and upwardly --projecting-brackets 62, between which and the plate there are'pivoted bell cranks 63 (Fig. 5).

pivotally connected by links 66 to a pin 61 (Fig. 8) extending through a vertical rod 68 which is slidable axially in a collar 69 projecting from the inner face of plate59 and; also in a similar Qcollan lgmounted: on the inner-flange of I-beam 5!.

When the elevators arein their lowerposition,- the upper surface of rollers 64 is substantially-in line-with the tops of rollers 6|, as shown in dotted lines in Fig. 5, so that movement of a tie from the infeed conveyor onto the elevators is-.=not obstructed.

The lower-portion of rod-68 is'providedwith a. counterweight 12 for delayingupwardmovement of the-rod until-rollers 64 have-beenswung intofcontact-with the sides of a tie by the outer ends-of the bell cranks'whose inner-ends are .restrained bylinks 66 and the counterweighted erend of :the rod slides in an opening in a guide bracket: :13 secured to the machine foundationfl w and a pair of coil springs '14 are mounted on this roller 48 and lets the arm drop.

To vary thedistance that ties project-beyond '-:tie'clamps-- 4 so that the depth towhich"the -ties maybe adzed can'be varied,.the'height.'to which .the'elevatorscanbe raised is made'adjustable. "This is done'by means of 'stops 'lfi attached to the outer flanges of I-beams 5|iand=50 whose upward movement: is limited bywedgeshapedportions 11 of i a horizontal bar 18. I This bar is slidable through slotsin upright channels 24, and rests at its ends on brackets 19Jconnected-to :the 'outer-faces of thesechannels. As appears from Fig. 8, if the wedge'bar' is moved to the right the elevators-willbe per- .mitted'torise" farther than if it weremoved to the left.

" Tiecarriage 1.

As previously --stated, each. elevated a tie is gripped by the jawsv of-a set of clamping memties stationaryso that they can be workedupon. Referring to Figs. 1 and 10, the carriage-inis confined between the top' of the strap and a nutfon the lower end of the bolt, the spring permitting relative movement between the rocker arm and I-beam 5i when the latter is restricted in its upward movement ina'manner to be de-- scribed later. a

T0 the upper end of the inner flange of each upright I-beam 5i isattached a -plate 59-subcludes a horizontal-shaft 8lextending the full ---width of themachine and'journalled at its'ends fiparted .to litby a 3 driving unit operatingin the manner of a' Geneva wheel and mounted i on" an 'extensi'omof the baseot pedest'aI M. -As-'best lug.

shown in Figs. 4 and 10, this driving unit includes an electric motor 89 whose extended shaft is provided with a worm gear 9| meshing. with a gear 92 keyed on a horizontal shaft 93 journalled in a gear housing 94. Acrank 95 is mounted on the inner end of gear shaft 93 and is provided at its outer end with a transverse pin 96' rigidly mounted in the crank and projecting therethrough. A small roller 91 is mounted on each end of the pin.

Keyed on the end of shaft8I adjacent pin 95 is a wheel 98 provided on its outer face with a plurality of uniformly spaced radial grooves 99, each formed by av pair of parallel integral ribs IIJI which extend from the periphery of the wheel to a predetermined distance from its center. slowly revolves to the left the inner roller 91 will enter the inner end of a groove 99 and engage the right-hand rib defining that groove, whereby the wheel will be rotated until the groove is swung'to the right of gear housing 94 where the roller will leavethe inner end of the groove.

To hold the wheel absolutely stationary while the inner roller is passing from a right-hand groove over to the next succeeding groove at the left, a latching device is provided comprising a three-arm lever I02 pivotally mounted on the extended base of pedestal 84 opposite motor 89. Inner arm E03 of this lever extends under wheel 98 and is provided at its inner end with an upwardly extending lug I04 which is adapted to project into notches I96 formed in the periphery of the wheel midway between grooves 99. Lug I94 is normally biased toward the wheel by means of a counterewight I01 mounted on the outer end of the levers outer arm I08 projecting substantially horizontally from the pedestal.

To unlock the wheel when inner roller 91 is about to engage a rib I01, the inner end of upwardly projecting lever arm I09 is provided with a cam H offset toward the wheel. 'As inner roller 91 approaches a rib IOI the outer roller 91 engages this cam and depresses arm I09 until at substantially the instant the inner roller engages the rib the latch lug I04 is swung clear of notch I06 so that the wheel is free to turn. The outer roller then passes under the cam as crank 95 turns in a counterclockwise direction, and lug I09 bears against the peripherey of the rotating wheel until the next notch reaches the Counterweighted arm I08 forces the lug up into the moving notch, whereupon the wheel is again stopped and locked while the inner roller travels from its groove to the next succeeding groove at the left.

It is during the periods that the carriage shaft is held stationary by the latching mechanism just described that the adzing and boring tools operate on tiescarried by clamps 4. The numw ber of grooves and notches in wheel 98 determines the number of times the. shaft BI will be "stopped and started during one complete revo- It will be seen in Fig. 4 that as crank 95 in Fig. 12.

carrythe clamping -members '4 for simultaneously gripping the opposite ends ,of ties which are raised to them by the elevators.-

v Tie clamps The clamping members are shown in Figs. 2, 10, 11,-jall but'one of them in Fig. 10 being shown incompletely and somewhat diagram matically. There are five clamps associated with each drum in such position that each tie is simultaneously gripped by one clamp of each drum. Each jaw H4 of the'clamps'is integral with the central portion of ahollow transverse shaft II5, into the ends of which project pivot pins H6 secured in. the circular plates II2 of. a

clamp-carrying drum. At each end of shaft II5 an arm H1 projects. at substantiallyright outer end and slidably disposed at its inner end in a radial bore I23 .in shaft 8!. The piston is reciprocable in a cylinder I 24 connected to'the side plates of the drum by suitable brackets or. the'like, not shown.

It willbe understood of this construction that when the piston is forced toward the rotor shaft the yoke I I9 is carried along with it, whereby arms II I are drawn toward the carriage shaft and the outer ends of jaws I I I- are swung toward each-other. The ends of the jaws are provided withpointed dogs I26 for penetrating and securely holding ties. The piston rod is encircled by a coil spring I21 between yoke II 9 and the carriage shaft to prevent the yoke from striking the shaft if the piston is actuated with no tie between the jaws.

The pistons of all the tie clamps are forced toward shaft 8| by means of fluid underpressure, such as air, introduced to cylinders I24 preferably in the following manner. A suitable source of fluid under pressure is connected by a conduit I28 to a chamber I29 in a casting I3I mountedon the outer end of pedestal 83. The casting is'alsoprovided with an axial bore in line with a similar bore I32 in the-carriage shaft. Extending through the castings bore is a tubular member I33 closed at its outer end and having an integralcircular flange I34 at its inner end which is bolted to the end face of the carriage shaft so that the tube will rotate with the shaft. The portion of this tubular member within chamber I29 is perforated to permit the pressure fluid to enter the member, while fiuid is prevented from escaping from the chamber around the tubular member by packings I36 encircling it at both ends of the casting. V

The inner end of tubular member I33 is joined to one end of a tube I 31 which extends through bore I32 toa point between the two clamp-carrying drums, where it emerges from the shaft through a radial bore I38, as shown This end. of the tube is joined to a'closed-end tube I39 that substantially encircles shaft BI, from which tube a plurality of short pipes I4I lead to inlet valves I42 mounted on a. collar 143, keyed on the carriage shaft (Figs. 10, 12 and 13), there being one inlet valve for each cooperatingpair of tie clamps. From the opposite side ofeach inlet valve a branch pipe I44 leads to a pipe I46 that connects a cooperating pair of tieilclamps'icarried bylthectwo .idrums. From'each pipe I46 anotheril'branch'ipi e I41 leads to. an' exhaust valve I48 also :mounted on collar I43 in staggered relation to the inlet valves, whereby when the inlet valves are closed and the exhaust valves opened; pressure fluid in cylinders-I24 is allowed to escape to the atmosphere. A diagram of this pi-pi-ng arrangem'ent is shown in Fig-l5.

The manner in #which these valves are operated for controlling "the supply 'of pressure I fluid to cylinders I24 is shown in Figs; 12, 13' and 14. Connected 1 to eachinlet jvalve is a lever I49, in the bifurcated outer end of'which there is :pivotally mounted a block "I5I having a through bore, slidably disposed .in which is an 'eye bolt I52 'havinglock nuts I53 threaded on -"itsiend an'd a coil spring-I 54. encircling its'shank :between'. the block and its: eye. A pin I56 extends through the eye of the bolt and also througha lever I5'I -and one end-of a bar I58.

This 'lever is operatively' connectedtothe: ex-.

:ihaust'valve in front oflthe inlet valva andibar I58is slidably "disposed'in a slot- I59 v(Fig. 14) through the end of an arm 'I6I projectinglrigidly from collar I43 in'front of .thecexhaust valve. The barisrnormally held :againstifmovement in the arm by axspring biased plunger I62 disposed in a transverse bore 'I63'inthe arm :and bearing against one side of the'bar.

The outer end of exhaust lever I5I is bifurcatedand provided with "a small *roller I64. -When this roller encountersan obstruction'as shaft'lil revolves, theexhaust lever :isthrown 'backward, which opens the'exhaustvalve; and which, by meansof eye bolt I52 and: its encircling spring, simultaneously forces r inlet :lever I49 backward to close the inlet valve. 'Coil spring I54.all0ws relative movement between the two valve levers to assure'that thesinlet valve will be tightly closed without danger of damaging any of the parts. The"backwardlyswung"exhaust lever also pulls bar I58rearward through rigid arm I6I, the forces being sufficient to-slide thebar across plunger I62.

The valves are operated inthis-manner by means of a vertically disposed-cam I65zsecured to a bracket 87 in the path of the exhaust lever rollers and having an arcuate concave. face down-which the 'rollerstroll. .The cam is-positioned tobe struck by a roller '54,.T1Ili'01d'81 to :close an inlet valve and open an exhaust valve, after a tie. carried-by the tie'clamps-controlled by thosevalves'has been completely adzed:.and bored, and the cam. face isof suchlength that roller I64 rolls 01f its lower end before those tie clamps again stop at. the tie-receiving station :above theelevators.

For openingthe jaws of aset oftie-clamps assoon as an exhaustva-lve is opened,'the outer pins I66 connecting-piston yokes: II9 to links II8- are extended through radial slots-I61 irrthe outer circular drum plates II2 (Fig. 10) Rollers I68 are journalled on the outer ends of these ,pins where they strike and roll :oncams: I69

' valve related to'those jawsis opened,that is,

=at the-tie discharging station of the carriage. The mechanismTor-again closinganexhaust 'valve and'opening an inletv'alve, 'in order-to them to grip.

machine near'said'first station of the ties.

ragoeo rss closeza: set .oftjaws- IN on a tie "supported :in

:raisedxpositionby'the elevators,is also shown :inZ Fig.il2. It includesha bell crank I'IIfpivoted on' a bracket I.I2.attached to the lower end of 0am I65. (The long'arm of the crank has a pin 113 in its end, slidable ina slot I'I4 'in' a lever" I IG, whichilever is pivoted at its opposite end on a .rlateral extension of bracket 81. "A solenoidll'lis mounted on the side of cam I65, the core of the solenoid being connected through aicoilspring I18 to lever I16 for raising it and 'rocking the bell crank whenthe solenoid. is "energized.

."Pivoted to=the short arm of bell crank I'II 'isa lever I19 provided with a stud IBIJfor limiting its forwardmovement relative to the .crank. -.On theupper end of this lever a pawl I82 'is mounted for striking a roller I64 when the bell crank is. actuated by the solenoid, the impact moving the adjoining bar I58 in the slot inst-cooperating rigid arm NH, and simultaneously closing the associated exhaust valve and opening theassociated inlet valve. In order for thewpawl to drive the exhaust lever forward it Therefore, the

Forward movement of the lower ing' laterally from lever I19.

A timing device I81, actuated by driving shaft 38 and supported on a bracket I88 attached to the end 011 base 4I, controls the energizing of the-solenoid and also the timing of operation of carriage-rotating motor '89 in such a manner as .to..assure that the carriage stops turning just before the elevators. raise a tie to position between-the open jaws of a set of clamps 4, and that the solenoid is energized directly after the .tie is iso positioned. Consequently, when the clamping' jaws directly above the elevators are forced'togetherythere is a tie between them for Adzing units As'viewe'd in Fig. 2, the carriage assembly revolves in'a clockwise direction and includes'five pair or sets of tie'clamps, five clamps being carried byeach drum. The machine is provided with means for adzing each successive tie during the interval it isheld stationary for the first time after it has been carried away from the ele- 'vators bya set of these tie clamps. Accordingly, anadzing unit is disposed at each side ofthe Each unit includes astand 592 mounted on the machinesfoundation with its front face disposed in an inclined plane parallel to the opposing face of a tie held motionless in front of it by a set of tie clamps.

Reciprocable lengthwise of this inclined face nf'thestandis-a slide i533 provided'with rollers I94 bearing against the stand. The slide is also equipped with rollers I95 journalled at right angles to rollers I94 for engaging the outer sides of a track I9! mounted on the inclined face of the stand-which track "uides the slide'in-a -'straight li-ne and is; provided witli' fiangesISB whichproject-outward 'overrollers I94 to'hold the -'slide= on the stand.

is journalled (Figs. 6 and 7). ings the adzing shaft is provided with a plurality of knives I arranged in pairs with the knives'of each pair parallel to each other on opposite sides of the shaft to which they are clamped by cooperating blocks 202 bolted together, the pairs of knives being alternately disposed at right angles to each other. On the outer end of the adzing shaft there is keyed a pulley 203 which is rotated by a belt drive 204 driven by a'motor 208 disposed at the rear of the machine. the position of slide I93 on stand I92, by a tensioning device comprising a bell crank 207 pivoted in a bracket 208 behind the belt. The long arm of this crank is provided with a roller 289' which is constantly pressed against the belts to take up slack by a coil spring 2! compressed between the rear face of bracket 208 and the outer end of a bolt 2| I whose inner end extends into the bracket where it is pivotally connected to the short arm of the bell crank.

For reciprocating slides I93'to carry the rotating adzingknives through a tie adjacent its ends, a horizontal shaft 2 I2 is journalledat both ends in the stands I92, and a gear segment 2I3 is keyed onthis shaft inside each stand with its toothed portion projecting through a slot in the inclined face thereof. The teeth of each segment register with the teeth of a gear rack 2M mounted on the under side of the adjoining slide so that when the segment is oscillated'the slide is reciprocated on its stand. The weight of the slide and adzing tool is balanced bya counterweight 2I5 mounted on an arm 2I6 extending rearwardly from the gear segment. I The movement of segment-carrying shaft 2 I2;

'is controlled by a pair of cams, 2H. and 2I8,

mounted on shaft 38 of-power unit 39 and engaged by arms 2I9 and 220, respectively, of a three-arm bell crank journalled on a horizontal shaft MI in a cam box 222. The third arm 223 of the crank is connected by a link 224 to a lever 225 rigidly connected to shaft 2 I 2. When cam 2 l1 presses down on arm 2 I9 the third arm 223 of the crank is raised, which causes the gear segments on shaft 2 I2 to likewise rise anddraw the slides and adzing tools to the'upper ends of their supporting stands. Following this, cam 2I8 presses upward against arm 220 which reverses the movement of the connected members and forces the slides down their inclined tracks. The downwardly moving slides carrythe adzing tools through a tie held in rigid position adjacent thereto bythe carriage assembly.

Boring units After a tie has been adzed, the carriage driving unit at the side of the machine again turns the carriage to carry the next succeeding tie from the elevators to the adzing station. Simultaneously, the adzed tie is moved by the carriage to its next station where it is provided with spike-receiving holes through its adzed portions by means of a pair of boring units. Each unit includes a stand 23! disposed above the adzing units on a plate 232 extending substantially the -full width of the machine on top of the main framework. The stand has an inclined front face perpendicular to the adzed surfaceof the ing unit tracks, mounted on its inclined face-- The belts are held taut, regardless of' Areciproc'able slide '234, 'of'the same general construction as the adzing unit slides, is mount edon stand ZJI Twhereit is reciprocated by a gear segment 23E meshing with a gear rack 23'! on the under side of the slide. The gear segments for both boring units are keyed on a shaft 238 journalled in stands 23! and in a pedestal 239' mounted on plate 232 between them. This shaft is oscillated by a lever 2 whose central a. three-arm bell crank 243 journalled on shaft 22I in cam box 22 2'. The remaining two arms of the crank engage a pair of cams 244. carried by;

the shaft of power unit 39,-the rotation of the cams causing the long arm of the crank to swing back and forth in the same manner as the long arm of the bell crank connected to the adz'ing units, and thereby oscillating segment-carrying shaft 238 on its axis. 7

Each boring unit slide 234 carries a bracket 246 having its base parallel to the adzed tie with a plurality of transverse slots 24! through the base. As shown in the drawings, the upper ends of a pair of cylindrical boring heads 248 are adjustably connected to each bracket by T-bolts passing through some-of the slots 24! with their heads disposed in T-slots in the boring heads; however, brackets 246 are generally lar'geenoughto permit connecting as many as fourboring heads to each bracket. Each boring head contains a motor which drives a spindle 249 projecting from the lower end of the head and in which a bit 25I is removably secured. The bit is steadied and guided by an elongate bite guide 252 through one end of which it extends. The opposite end of the bit guide is provided with a longitudinal slot at right angles to transverse slots inthe lower end of a stand 23! tovwhich the guide is connected by bolts extending through the slots (not shown).

-' With. the boring heads connected to the head when a change in the position of the bores.

is specified, as was necessary many times here? tofore, thereby providing a saving in' time and equipment. The Weight of the slides with their boring tools is balanced by counterweights 253 mounted on arms 254 projecting rearwardly from gear segments 236.

The necessary diameter of the boring heads limits to substantially four the number of bits thatcan be simultaneously disposedwithin the area inwhich the spike holes must be bored at each end of a tie. For the same reason these bits can not always be disposed as closetogether as the holes are required to be. To overcome these limitations in number and spacing of spike holes, asecond pair of boring units is mounted on a top plate 256 at the front of the machine. These units are the same in constructionfland operation as the previously described boring units, except that they face in the opposite direction, so they will not be described in detail. The two pairs of units are connected to eachotheratrtheir topsby combined compression andv tension members: 281.

The gear-segment-carrying .shaft 251 of.:'..the;. frontpair of boring unitsis oscillated..irr.unisony with: but in:a directionwopposite to, segment-z carrying shaft238 .ofthe rear; pairr'oftboring... units. This is' accomplished .by meanssofailink 258 connecting the end of; lever, 2M,v opposite 1 thatto which link 242 is connected-,;.to one end: of a=lever 259 rigidly connected to shaft 251.

Thus: the boring tools of the two pairs of'units are-reciprocated relative to-the tie carriagein unison, but the forward boring tools act on a tiethat has already been bored by thetools at'the other end of "the machine while the lat ter are boring a tie that has just :beenadzed and .the adzing tools are adzing a tie carried to them from the elevators. The forward group: of.boring..tools are-adjusted ontheir brackets:

for boring holes as close to. the first-:bored set of holes as desired, thereby providingithe' tie with holes which'it may have been impossible. for the'rear group of tools alone to 1 bore; Of v course,- if" less than the maximum number. of holes are desired in a tie,-a sufficientnumbers of. bits .canbe disconnected from. their; boring.

heads. to leave-only; the required amount.

Outfeed conveyor .Asthe ,carriage moves a tie from. the second. boring station, theyalves associated with the-tieclamps carrying. that tieare manipulated: by" cam 65 as previously described to. release-fluid pressure fromthe cylinders connected' 'to those; .valves, and .rollers I68 engage-cams 169 randy spread the. clamping jaws apart. This releases: the completelyadzed andbored .tieheld by that particular set of vjaws and the tie slides .down

inclined skids 262,; attached, at their lower ends to. angle. iron. 88, and. onto outfeed conveyor '9.- This conveyor is. composed .of rollers 263 .jour-- nailed at their ends in bearings attachedtoan angle iron. 88 land a similar. angle iron 264attachedto theframeworkuparallel .to the. first angle iron.

Operation".

To more clearly illustrate the operation of,

this adzing and boring machine and theauto:

. matic'cooperation" of its. parts, .the passage. of

a-tie through'the machine will now be .traced.

Atie isplaced on'the endless 'infeed conveyor 2 and 'againstthe inner ends of a pair of lugs l6which"are so disposed relative to the vertical positionsof elevators 3 as toreach' the elevators when they are in their lowest positions. The movements of the infeed conveyor and elevators are coordinatedhecause they are both operated, through Sprocket chains '29 and .34 pe y; second set of bonngtoolsbemg operated in uni connecting power. unit 39 at the rear of the maandreciprocates the elevators.

by Wedge-shaped portions -11 on; bar 18 which isv moved to the right orleft;- depending on the depth to which the tie is to: be adzed.

Thetiesisraised to a position. directly between:v thefiopenzjawsrofitwo tie. clamps 4;? one zclamp: being.disposedrnearneach? end ofsthe tie. Azpairl of tie clamps isbrought .to 'rest'above-the elevae tors "every: time 'thecelevatorsz approach. .tie cari i riaget becausemotor 89, which drives the mech-.'

anisnrthat; intermittently. rotates the gcarriage,

is: connectedutotimer. I81 operated .by' power;- unit .39-,:.the: timer coordinating; the. operation;

of the'.carriagerotating-mechanismzwith that. .off the zelevators to securethewabove result; Furs 5 thermore; the tie clamp jaws at the, tie-receiving; statioxrrarev-open for-:receiving an elevated .,tier becausezthe inletvalve [42,1 which admits fluid; under. pressure to the :cylinders I24 associated:

with thosejaws; haswbeen closed just previously-10.;

by cam':|65, .the'exhaustvalve I48 in thesameo pressure" line has been opened. simultaneously; by "the same, means, and the jaws have :been: opened: by rollers 1G81engaging. cams I 69;.-

After the tie :has been'disposed between-:the ,-15..

open clamping jaws, timer l8lzinitiates '..the.1en;. ergizingqof solenoid lll,.whereby-the :openceihhaust valve 'l48xiskickedshut by bell crankulfl. The closing-movement of the exhaust valve opens."

thBzfiSSOOiflllGd inlet-valve, and. fluid under pres-2:

sure isagain admitted to cylinders i24 for close ing tlie jaws on'the tie. By this time: camjly begins: to move away from the rocker arms, which permits the elevators to lower to pick.

up: the next tie. from the infeed conveyoryand 25 l thetie carriage isturned by motorjflfl'andzwheelzi 98.;tothe. adzing station.

After the arrival of the tie at the adzingvstar tion, camfi-IB; turned by power unit 39,1.raises arm 22lluwhich,1thr.ough link1224 and gear segments 21.3, forces adzing slides:lilt downrthein inclined tracks N21. As these slides move downa- Ward; the adzing knives 2M carried thereby'and-z; continuouslyrotated by -motors' 203;. cut trans. versely. through the outer face of the tie= which isstherebyvadzedunear each, end. Theadzing: slides. are then returned to their upper 'posi-' tions by cam 21?, vand the'tie carriage :-carries.- the adzed tie' to thenext "station .whichzisthe first :boring-v station; 40

While the tieis held stationaryimthisxposition; boring slides 234 are reciprocated on their" inclined -tracks..233 by gear segments 238*which" are connected: through links 242 to .cams' 244 mounted on the driving shaft of powenunitfifit' 4 5 011i their downward .stroke the boring tools. '8; carried :by slides 234, provide each end of the tie withtone or-two bores-pas desired. Before the'machine is set in operationthe'boring. heads.- 248=-are-adjustedaontheir brackets 246:.to-provide the 'desiredspacing'and. positioning of thespike :holesto be bored in'the tie by bits 25!. Simultaneously with" the boring of this tie the next succeeding--tiex-is being adzed. The .bored. tieristherricarried by-- the carriage to the secondn boring station where the .tie is provided with: additional boressinpnthe desired positions;v this son with the first set by means of link 258 which connects rocker shafts 238 and' 251.

When the adzed and bored tie is moved-away? from'the 'secondboring station by the 'tlB'CSI-f riage; the valves-which controlthe: supply of fluid under pressure to the cylinders associated. with? the tie clamps engaging that tie, and which are mounted 'on .the center of..'carriage shaft .8 I strikencam I65.whereby they areactuatedto. per-mittheclampingjaws to be opened for. re-. leasing. the, tie carried thereby. tiefalls on outfeed conveyor 9 .by which it is removed from the-machine.

From the foregoing description it will. be ;l1l'l' derstoodthat theoperation of this combined.

adzing and .boring machine is -entirely;- auto-.75

The released 7 matic from the moment a tie is placed on the infeed conveyor until it is discharged from the machine by the outfeed conveyor. Power unit 39, at the rear of the machine on base 4!, con

trols either directly or indirectly, the operation of all cooperating parts of the machine.- It operates the infeed conveyor and the elevators and, by the cams keyed on its rotor shaft, it reciprocates the adzing and boring tools in proper timed relation to the movements of the tie carriage. Furthermore, through timer I81, power unit 33 coordinates the movements of the elevators and the tie carriage to assure proper feeding of ties to the tie clamps mounted on the carriage, and also the clamping and release of the ties.

It will thus be seen that-a combined adzing and boring machine constructed in accordance with this invention is capable of automatically. and efiiciently handling any work assigned to it, among other reasons because the machine can quickly and readily be adjusted for boring any desired number of holes within a certain maximum in any desired positions in an adzed tie without adding or changing boring heads. Furthermore, the adzing and boring tools or" this machine are disposed in positions where they are readily accessible for adjustment, replacement or repair.

According to the provisions of the patent statutes, I have explained the principle and operation of my invention, and have illustrated and described what I now consider to represent its best embodiment. However, I desire to'have it understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically illustrated and described. i

I claim: 1 l. A combined adzing and boring machine, comprising a tie carriage rotatable on a horizontal axis and provided with means for gripping ties, elevating means for supplying ties to said gripping means, means for automatically actuat-' ing the elevating means in synchronism with the movements of the carriage for supplying ties to the gripping means at regular predetermined intervals, power-actuated adzing and boring tools disposed adjacent the path of movement of said gripped ties and arranged to act successively on each tie, means for successively moving said tools into operating relation with each tie, and means'ior disengaging the gripping means from each tie after it has been adzed and bored.

2. A combined adzing and boring machine, comprising a tie carriage rotatable on a horizontal axis and provided with means for gripping ties, an endless conveyor for conveying ties into the machine, elevators for raising ties from the inner end or" the conveyor to the tie-gripping means, means for automatically actuating the elevating means in synchronism with the movements of the carriage for supplying ties to the gripping means at regular predetermined intervals, and a plurality of tie-spacing lugs con nected to the conveyor and so spaced longitudinally thereof as to deposit one tie on the elevators each time the elevators are lowered, a plurality of power-actuated adzing and boring tools arranged to adze and bore ties carried by said carriage, means for moving said tools into operating relation with the ties, and means for discharging adzed and bored ties from the carriage and machine.

3. A combined adzing and boring machine,

comprising a tie carriage mounted on a horizontal axis for rotation between a plurality of stations, a plurality of sets of tie clamps mounted on the carriage,'fluid pressure actuated means for closing said clamps, a plurality of valves mounted on the carriage for controlling supplying of fluid under pressure to said means, elec-. trically controlled means for operating the valves to cause each successive set of tie clamps to grip a tie at the lowermost station of. the carriage, means forsupplying ties to said lower.- most station, a plurality of adzing and boring tools arranged to adze and bore said ties at succeeding stations of the carriage, means for successively moving said tools into operating relation with each tie, a cam for operating the valves to permit the tie clamps to release adzed and bored ties, and means for discharging ties from the machine.

4. A combined adzing and boring machine, comprising-a tie carriage mounted on a horizontal axis for rotation between av plurality of stations, a pair of tie-clamping jaws pivotally mounted on the carriage, a cylinder mounted adjacent said pair of jaws, a piston reciprocable in the cylinder and operably connected to the jaws, a conduit for conducting fluid under pressure to the cylinder toclose said jaws, an inlet and an exhaust valve mounted on the carriage .for controlling passage of fluid through the conduit, electrically-actuated means for closing the exhaust valve and opening the inlet valve to cause said clamping jaws to grip a tie at the lowermost station of the carriage, a plurality of power-actuated adzing and boring tools adapted to adze and bore ties carried by the clamping jaws, means for successively moving said tools into operating relation with each tie,

means disposed in the path of the valves for simultaneously closing the inlet valve andopening the exhaust valve to release pressure from said cylinder, a cam mounted in fixed position adjacent the path of the jaws, and means connected to the jaws and adapted to strike thecam to open said jaws after pressure has been released from the cylinder.

-5. A combined adzing and boring machine, comprising a tie carriage mountedon a hori-' zontal axis and rotatable between a plurality of stations, a plurality of sets of tie clamps carried by the carriage in circumferentially spaced relation, vertically reciprocable means disposed beneath the carriage, means for intermittently supplying ties to said reciprocable means in its lower position, means for reciprocating said reciprocable means to raise each successive tie to a position adjacent the lowermost station of the carriage, means for causing each successive set of tie clamps to grip an elevated tie at said lowermost station whereby ties are removed from said reciprocable means by the carriage, poweractuated adzing and boring tools disposed adjacent the path of movement of said gripped conveyor foriconveying ties-into the machine,

elevators-for raising: successive ties to a position adjacent the lowermost station of the carriage, pressure fluid means for causing each successive set of tie clamps to grip an elevated tie at .said lowermost station whereby ties are re-' moved from the elevators by the carriage, power.-driven adzing and boring tools disposed'adjacent the path of movement ofjsaid gripped ties; means forsimultaneously moving said tools intooperating relation with successive ties at successive stations of the carriage, c'am means for disengaging each successive set of clamps from its tie ,afterthe-tie has been adzed and bored, and meansjor conveying released ties awayiromqthe carriage.

7. A. combined adzing and boringmachine,

to :a position adjacent the lowermost station of the carriage, a motor for actuating said conveyingrmeans and elevators, means for causing each successive set of tie clamps to grip an elevated tie-at said lowermost station whereby ties are removed" from the elevators by the carriage, power-driven adzing and boring tools disposed adjacent the path of movement of said gripped ties, a plurality of cams rotated by said motor, means operatively connecting the cams to said adzing and boring tools for simultaneously, mov

ingthe tools into operating relation with suc cessiveties at successive stations of the tie carriage, means for disengaging each successive set of tie clamps from its tie after the tie has been adzed and bored, and timing means operated by said motor for synchronizing the intermittent movement of the tie carriage with the movements of the other members. operated by the motor. r

8. A combined adzing and boring machine, comprising a tie carriage mounted for rotation'between a plurality of stationaa plurality oi sets of tie clamps mounted on the carriage, fluid pressure actuated means for closing said clamps, a plurality of valves mounted on the carriage for controlling supplying of fluid under pressure to said means, electrically controlled means, for operating the valves to cause each successive set of tie clamps to grip a tie at one of the'stations of the carriage, means for supplyingqtiesto said tie-gripping station, a, plurality of adzing' andiboring tools arranged to adze and bore said ties at succeeding stations of the carriage, means for successively moving said tools into operating relation with each tie, means for operating the valves to permit the tie clamps to release adzed and bored ties, and means-for discharging ties from the machine.

9; A combinedadzing and boring machine,

comprising a tie carriage mounted for rotation.

between a, plurality of stations, a pair of tieclamping jaws pivotally mounted on the carriage, a cylinder mounted adjacent said pair of jaws, a piston reciprocally mounted in the cylinder and operably connected to the jaws, a conduit for conducting fluid under pressure to the cylinder to close said jaws, an inlet and an exhaust valve mounted on the carriage for controlling passage of .fluid through the conduit, electrically-actuated means for closing the exhaust valve and opening the inlet valve to cause said clamping jaws to grip a tie at one of the stations of the carriage, a plurality of power-actuated adzing and boring tools adapted to adze and bore ties-carried by the clamping jaws, means for -moving said tools into operating relation with ties carried by the clamping jaws, means disposed in the path of the valves for simultaneously closing the inlet valve and opening the exhaust valve to release pressure from said cylinder, a cam mounted in fixed position adjacent the path of the jaws, and means connected to the jaws and adapted to strike the cam to open said jaws after pressure-has been released from the cylinder.

10. An adzing and boring machine, comprising l which the tie-supplying means can rise, a resilient connection between the tie-supplying means and said mechanical means whereby to permit relative movement between them when the height to which the tie-supplying means can rise is varied, adzing and boring tools disposed adjacent the path of movement of ties carried by said gripping means, means for moving said tools into operating relation with each tie, and means for disengaging the gripping means from each tie after it has been adzed and bored.

GRANT B. SHIPLEY.

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