US1848288A

US1848288A - Metal cutting machine

Info

Publication number: US1848288A
Application number: US290537A
Authority: US
Inventors: William H Welch
Original assignee: COOHRANE BLY Co
Current assignee: COOHRANE BLY Co; COOHRANE-BLY Co
Priority date: 1928-07-05
Filing date: 1928-07-05
Publication date: 1932-03-08
Anticipated expiration: 1949-03-08

Description

March 8, 1932.

w. H. WELQH METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet l R O T N E V m March 8, 1932. w H, w c 1,848,288

METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet Lg "will March 8, 1932. w. H. WELCH METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet 3 INVENTO mzwwim/zzcib BY I A I v y? I:

I /ZZ5ATTONEY March 8, 1932. w. H. WELCH METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Shet 4 L's ATTOR March 8, 1932;

W. H. WELCH METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet 5 March "8, 1932,

W. H. WELCH METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet 6 H lNVEN lz'sAT RNE March 8, 1932. w. H. WELCH 1,848,288

METAL CUTTING MACHINE Filed duly'ij, 1928 8 Sheets-Sheet 7 March 8. 1932. w, WELCH 1,848,288

METAL CUTTING MACHINE Filed July 5, 1928 8 Sheets-Sheet 8 1&1

WZZZLI'EZZ vide an improved machine of the class de-. scribed enibodying'means for support nge' Patented Mar. 8, 1 932 NITED?STATES PATENT o-Frlcze; f i.

on noonns'rnie NEW YORK, AssIGN'on 'm'o sweethearts-601v:-

rAnzcor: noonnsrnn, NEW Yonx, A coerce-Arron or NEWYORK I oil-Twine MACHINE",

= I jA p ilioation 'filed' my 5, 1928.- Serial -No.'290,537-.

signed to facilitate the handling and eiitting' of bar niziterielo r the lilreinto sections of various lengths: with rapidity and accuracy and at a min mum cost. V

A further object of the invention is toproplurality of bars, sl1a'fts,-or'the' like in "2.5 senibled position at aloedlng. station for quick delivery to one or more trucks" or car riers arranged to feed the bars to the severing means at a cutting station step by step, and

further to provide receiving'trucks or holder's fort-he severed sections, designed to .advzin'ce the ilatter to one or moreunloading stations, together with operating devices for the several mechanisms and selective control clutch devices designed to control the opere at ing devices.

A still further ob ect of the invention is to provide improved Work recelvlng, conveying zind unloading mechanism designed toquielp I lv'faeilitatethe handling'and unloading of 7 clutch mechanism for controlling theopere- 'tion of the elevators on the unloading trucks the work before and after the cutting operation's.

2; further object is to'providean'iinproved selective clutch mechanism for controlling th'e've'rious operating parts provided for hgindling the Work. Y 7

To thesefand other ends the invention resides in certain improvements and: combinations of parts; all as Willbe hereinafter more fully described. the novel features being pointed out in the claims at the end of the V specification;

In the drawings 2 Fig. 1' isle diagrammaticplan illustrating one embodiment of the invention;

Fig. 2 is an end elevation as viewed from the right of Fig. 1;

Fig. 3is afront elevetion'of the machineshown inFig. 11; e v

dis a fregnientarysideielevation'of a power operated truck for receiving and disthe severed sei'ctions'of the work chhrgin'g i hers -Fi 'f5 is a fragmentary pert sectional elevation of one of -the"trucks showing the means for locking it in various positions,

uponthe track; 1

' Fig. 6 is an end elevation of the truck shown in Fig. i with the clamping meansfor the Work applied thereto;

1 7 is a similar view showing the work elevating means raised to positionjto efieet dischar' e of the'work from the truck .l a a i F g. '8 1s a fragmentary part sectional plan of the Work support and the olutoh mechanism for controllingthe moveinents of the truck and thereon;

Fig. 9 isa sectional elevation taken on'li ne -Fig .f10 is .an enlarged part sectional-elevation' takenon line 10 l0 of Fig.8; J

Fig. 11 is {a sectional plan taken on line 1l .11 ,of Fig. 10 showing the'euto natic the 'WOIfk elevating means.

gear drivenmeans for returning the eleva-,

tor control clutch to; normal position Fig. 12 is a.detgiiled perspective view of' slide blok shown in,

the screw actuated Fig. '11; v I

Fig; 13 is aseetionel elevation throughthe taken on'line 13 -13""of Fig. 8; e I V V Fig. 14 is a transverse) sectional elevation through the clutch housing taken on line llt l'l of Fig. '13 i Fig. 15 is a sectional elevation taken on an enlarged scale showing the expanding inea'ns for one of the. clutch bands lndicz'ited 1n F1 -.1-3,'and

Fig; 19* is 'a 1'1fendzelevetion of one otthe worliho1ding"trucks."- I

Similar reference numerals throughouttlie se'verel indie'zatethe same 1 parts.

The; present inventionenibodies generally a. poiverdrive'n saw 01 cutter,-move'dto'antl from operating posltio'nfto sever'se'ctions theidesired lengths "from the barniaterml,

held temporarily by suitable supporting means, to which they are presented by trucks orrcarriers arranged to be advanced step by step on a track located at one side of the work support. At the opposite side of the work support is a second track having mounted thereon one or more work receiving and unloading trucks or carriers, normally occupying a position at which they will receive the projecting ends of the bars to be severed. The trucks are adapted, after each cutting operation is completed, to be advanced preferably by power means associated with the trucks to a position from which the sections will be discharged by ,gravity to an inclined platform. The platform preferably comprises a plurality of hinged sections or closures overlying receivingcompartments for the sections, into anyone of which the sections can be directed by raising the closure therefor. One of the unloading trucks is power operated and is under the control of the selective clutch mechanism. Thesame is true of one of the work advancing or delivery trucks, to which the bars are fed by gravity from an inclined support disposed adjacent the track on which the trucks are arranged to travel. As shown,

only one of the delivery trucks is power op erated, the others being moved by the weight of the work thereon, which is suilicicntly heavy to effect advancement of the same during movement of the power truck. The bars are clamped on the power truck and when the latter is advanced the ends of the bars are projected through the work support to a position at which the portions to be severed project within the V-openings of the receiving and unloading trucks. The severed sections are preferably clamped within one of the receiving trucks, after which said trucks are advanced to the unloading station, one by the power means provided and the other by the weight of the severed sections thereon. The clamping means is then removed and the elevating means operated to raise or lift the sections to a point at which they will be dis charged for movement by gravity on the inelined platform into one of the compartments provided therebeneath.

Referring to the drawings, represents a base having thereon at one end a. V-shaped work holding block or supportll. Secured on the base at one side of the block is a support 12 for anupstanding bracket 13 having a plurality of rearwardly extending arms 14 overlying the V-shaped work support. The

arms are each providedwith a clamping screw 15 and the lower ends of the screws are provided with enlargedwork engaging members,

not shown, which overlie the V-shaped work support and serve to firmly clamp the work in position when'the screws are properly adjusted. Between two of the clamping. screws the support 11 is provided with a transverse ter whereby to effect severing of the desired number of sections from'the bars 23, which preferably constitute relatively long lengths of shafting to be cut up in equal or varying relatively short lengths as desired. However, the bars whether of metal or other material may be of varying shapes in cross section and may be cut in various lengths. The feed screw 22 is also driven by the motor through suitable driving means, not shown. The main operating shaft for the driving mechanism within the housing is indicated at 24 (Fig. 2), its outer end being journalled in an upstanding arm 25 suitably secured to the base 10. The shaft 24 is preferably driven by a chain and sprocket drive connected with the motor shaft and enclosed in a housing 26.

At the left side of the cutting mechanism as viewed in Figs. 1 and 2 is an inclined stand or platform 27 upon which the shafting or bars 23 are placed, ready for discharge by gravityto the trucks or

carriers

28 and 29 shown at the left of Fig. 3, each of which has an upstanding V-shaped work receiving block 30. The power operated truck 28 is provided with detachable side members 27 which are designed to be interchangeably secured to the tracks 29. A yoke 28 is pivoted to one of the side members and is connected with the other by a removable pin 29. A clamping screw 30* is threaded through the yoke for clamping the work within the V-shaped block 30. The shafts are held upon the inclined platform27 by detachable pins 31, which when removed permit the shafts to roll downwardly into the upstanding V-shaped portions of the trucks- The trucks at this time are positioned at suitable points opposite the inclined platform and at such distances apart as to insure an approximate equalization of the load thereon. The trucks are preferably of the four-wheel type, the wheels being indicated at 32 and arranged to travel upon a suitable track, preferably comprising a pair of rails 33 supported at the desired height by a plurality of standards 34, which are preferably connected by cross-tie members, one of which is indicated at 35 in Fig. 1; The, inner ends of the rails are carried by suitable supports 36 onthe base 10 as shown in Fig. 1. The

work advancing trucks

28 and 29 are similar in construction, the only difference being that the power operated truck 28 has a downwardly extending portion 37 with'which is feeaes:

suitably connected theupperiflight of a sprocket chain 38 disposed centrally of and;

between the-rails The chain at the outer end of the track travels on a sprocket 39 sup ported bysuitabl'e means carried by the cross tie member of the outerstandard 34. r The chain at its inner end engages a. sprocket 40 on shaft 41 journalled in suitable bearings 42. The shaft adjacent its forward end care ries a sprocket 43 on-whichtravels a driving ch 44 driven by a sprocket 45 onashaft 46' journalled-in suitable bearings 47 on the gear box which houses the clutch mechanism hereinafter described.

Thennloading trucks or carriers for receiving and unloading the severed sections of the bars are indicated generally "at 49 and CID 50, the former preferably comprising the power operated truck and the latter being I moved ..therewith simultaneously by the weight thereon of the severed sections of the bars. 'The

trucks

49 and 50 are also of the foiir wheel type, the wheels 51 of which are mounted on a suitable track preferably comprising a: pair of rails 52,'the inner ends of which are carried by'suitable iporoshei on thebase 10. A number of Heshaped stand ards or frames 54serv'e to'support said rails at different points as indicated in Figs. 2 and it The truck 49, asstated above, is preferably power operated between the unloading station and the point which it occupies when in position to receive the overhangingends of the bars projecting through the work support 11 in position to be severed by the cutter. The truck 50 may be manually or otherwise adjusted to the correct position upon the erly accommodate lengths to be cut fronrtne bars.

track with respect to the power. truck, whereby it will be the proper dlstance from the I latter to receive its share of the weight of the several sections severed from the bar material at each operation of the cutter. 'The weight on the truck 50 will be sufficient toadvance it to the unloading station when the power truck is shifted from receiving to unloading position. By mounting the unloading trucks for independent movement on the track, one

can'be adjusted relative to another to propsectionsv of The trucks 49 and 50fwhen unload-ed, as

hereinafter set forth, discharge the severed sections of the bars at the receiving station for movement by gravity to one or another of the several compartments 55 of a stand or platform indicated generally at 56 inFigs; l

and 2, which may be'constructed in any suitable manner. The compartments 55 are each.

closed by a door 57 hinged at its rear side'to the frameworkof the stand a's-shown inFig.

2.; Each compartment 55may be filled by 7 opening the door thereto. and allowing the severed bar sections to roll therein when d1scharged from the unloading trucks. I

different The trucks '49 and 50 are similar .in constructionand a description ofone will suffice forthe other, the'power truck 49 differing;

from the truck 50"only in that it is connected with power operated means for moving it back and forth onthe track. It also carries a clamping device for the work which may be applied to theatruck50 if desired, or if preferred, bot-h trucks may be provided with Y the same type of clamping device.

The truck 49 comprises a base 58 having trunnions at its opposite sides on which the" wheels 51 are journalled for travel on the rails 52 as shown in Figs. 6 and 7. Mounted V on the base 58 is a 'V-shaped block or body59 having opposed

inclined portions

60 and 61 for receiving the severed bar sections 62a as shown in Fig. 6. The blocker body 59-ca're ries atone side thereof a housing 62 for a gear 63 on a shaft 64 journa'lled in the walls" of the housing, A guideway' 65 is formed in the block-for the reception of a rack bar 66, the teeth ofwhich meshwi'th those of the gear 63, An elevator or'ejecto'r 67 is bolted to one side of he rack bar for movement thereby from the 1 normal position-shown in r flange or plate portion 7 3 rigid on and proice-ting rearwardly from the block 59 into substantial alinement with the doors of the platform shown in Fig. 2, so that in raising the elevator to the position shown in Fig.

'2- the severed sections 62 will roll down the incline 78for'deliveryinto one or the other. of the compartments 55 depending on. which .of the doors 5'? is in raised position. It will be understood that while the elevator is being raised the inclined portion 71 thereof will cause the severed sections 62 whichlie on the inclined face 61, to travel upwardly thereon while at the same time the reinaining sections will also be elevated and all willbe brought to the position at which they'can be discharged by gravity down the incline 73 to the receiving stand or platform.

The ends of the bars 23am clamped upon the power truck or holder 49 when both,

trucks or holders are in position to receive" sald ends, which are projected through the work support llto the right of thesa'iv or cutter indicated in Fig. 1. The bars will at the' same time be clamped within the V'- shaped work support 11 on both sides of the slot-l6 by thecl'amping screws 15; 7 After said" ends' have been severed t-he ewei--e erated truck or holder is I moved to the;

for

position shown in Fig. 1 during which time the truck or holder 50 will be moved by the weight of the load thereon and upon removing the clamping yoke 7 1 of the power operated truck 49 the elevators can be operated to raise the severed sections which will be discharged from the unloading trucks as stated above.

The

work holding trucks

28 and 29 will then be-advanced another step to project the bars through the V shaped support 11 into the V-blocks of the

trucks

49 and 50, and the saw is then advanced to again sever sections of the desired lengths from the bars. It will beunderstood that the bars 23 will be held upon the trucks '28 and 29 by one or more of the clamping devices shown in Fig. 19. However, only one is provided and this is car ried by the power truck 28.

The work clamping device shown in Fig. 6 is of the quickdetachable type and comprises a yoke-shaped member 7 4, having an operating handle at its front end. and being forked at its rear end to receive a supporting member 76 to which it is pivoted at 77 for a limited rocking movement about the axis of the pivot. The lower end of the member7 6 is provided with an inwardly projecting lug 78 adapted to interlock with a correspondingly shaped lug 79 on the truck body 59 as shown in Fig. 6. A shelf-like member 80 projects rearwardly from the block 59" and forms a rest for the lower end of the member 76 when positioningit for engagement with the lug 79. The forward end of the pivoted member 74 is provided with an inwardly projecting lug 81 adapted to engage under a lug 82 on the block 59 when the clamping device is in the position shown in Fig. 6'. A screw 83 is threaded through the yoke 74 and carries on its lower end a work engaging member 84 for clamping the work within the V-shaped block. The head 85 of the screw is adapted to receive a suitable wrench for turning the screw which tends to elevate the yoke 74 thereby tightly drawing the lugs 78 and 81 into engagement with the lugs7 9 and 82 respectively. The yoke 7 4 is recessed at 83a to permit the up-, per end of the member 76 to swing into the recess against the action of a spring 8466 which tends to hold the parts in the position shown. In detaching the clamping device, the clamping member 84- is first loosened by turning the screw 83 a slight amount after which the member 76 is free to drop to the shelf 80 and the lug 81 into lowered position to a seat 85 on the top of the gear housing 62. By gripping the handle 7 5 the operator can at the same time pull the yoke for wardly and swing it upwardly to effect its release from the body of the truck.

The elevators are raised by means of the powershaft 86 extending longitudinally between the rails 52 and journalled in a pair of bearings 87 depending from the base block 58 of each unloading truck. A sprocket 88 is keyed on the shaft between the lugs 87 and carries a sprocket chain 89, which drives the sprocket 90 on the shaft 64, which drives the gear 63 meshing with the teeth of the rack .66 whereby the elevators 67 are raised and lowered. The sprocket 88 while being keyed upon the power shaft 86 for rotation in opposite directions thereby is free to slide longitudinally of the shaft since the key or spline is free to travel within the groove 91 of the shaft. The shaft at its outer end is journalled in a suitable bearing member 92 extending transversely of the rails 52 as shown in Fig. 1. The inner end of the shaft is journalled in a suitable bearing 93 on a bracket 94 bolted to a base plate 95 extending beneath the rails 52 and also the gear box 48. The plate 95 is supported by a pair of frame members 96 as shown in Figs. 9 and 10. The shaft 86 carries a worm wheel 97 meshing with a worm 98 on a transverse shaft 99 journalled in a bearing 94a of the bracket 94 and having on its inner end a gear 100 keyed on the shaft 99, Fig. 10, and driven by means hereinafter described.

The means for moving the power truck 49 between the work receiving and unloading stations comprises preferably a chain 101 connected by a bolt 102 to the bottom of one of the depending bearings 87 for the power shaft 86 as shown in Fig. 4. The chain at the outer end of the track 52 is supported by a sprocket 103 journalled on a bracket 104 supported by the outer standard 5 1, Figs. 1 and 3. At the inner end of the track the chain engages a driving sprocket 105 on a short transverse shaft 106 journalled in the bearing portion 9 a of the bracket 94, Figs. 8 and 10, and having at its front end a gear 107 driven by one of the clutch mechanisms hereinafter described.

The clutch drive for raising and lowering the elevators of the

trucks

49 and 50, through operation of the power shaft 86, the worm shaft 99 and the gear 100 thereon will now be described. The gear 100 meshes with an idler 108 on a main drive shaft 109 having its opposite ends journalled in suitable bearings on opposite side walls of the gear box 48 as shown in Fig. 13. The idler 108 is driven by a gear 110 fixed on a shaft 111 having its opposite ends journalled in suitable hearings on said walls. 1 The shaft 111 carries a pair of

gears

112 and 113 loosely mounted thereon and adapted to be continuously driven as hereinafter set forth. The clutch for connecting gear 112 with shaft 111 serves to rotate the latter in one direction to effect raising of the elevators through rotation of the idler 108 andgear 100 on the worm shaft'99. The gear 113 when clutched with the shaftllll will rotate the latter-in an 7 opposite direction to lower the elevators.-

through reverse operation ofsgears 1210, 108. and 100.

i Each ofthe gears 1512 and1131is provided with a clutch bard 114 disposed wit was gear and split ioated' in Fig. 13'to receive engant jaws 115 disposed-be tween the split ends or the band and pivoted at 1] 16 to swing Joutwardly when the wedge shaped member 11'? is forced th'erebetween,

said jaws being held "spaced apart by a pin 118 to pernntithereduced end ofathe wedge: to enter the opening between the paws.

It will be understood that the clutch parts.

associated with the gear"'1-13 are the same as those for the gear 112 shown in 18;.

and that the left hand end ot the wedge shown in this figure will 'operatethe lett handk clutch band in themanner explained above. The pins 116 and 1'18are suitably secured in the ends 01" driving member 119 keyedjon the shaft ll and having its ends. encircling the 1111118 of the

gears

112 and 113 as shown in Fig. 13. r A sliding 'spooloroperatinginelnher 120 islzeyedupon and mounted for back and forth niovement on the driving member 119 to eii ect nlovernentlof thewedge' '11-? whereby to] clutch either of the gears to the driving member depending on I whether 1 or not it is desired to raise or lOWQTAthQ-tflidi elevators; The wedge ll'i'aildthe pivoted jaws" rest on a flattened portion 121 of the driving member and the wedgeis disposed within the spool and secured thereto byscrews 122 as shown in Figs. 13 and-18;

The gear 112 is continuouslydriven-bya pinion 123 on theldr'ive shaft 109, and the" 113 is continuously driven by' a'pinion 124 on a shaft 125 havinga-gear 126 continnously driven'by gear 12'Z-on the drive shaft 109 ,Figs. 13 and '16. It will be seen, thereiore,-that movement of the spool 120 to the right as viewed 1n F 13 willefiectrocanse'it to rotate in a reverse direction to i ectlowering of the elevators;

. The spool is operated by a lever 128 pivoted 2113129 to a bracket 130 on thegear box48.

The lower end of the lever engages a slide 131 having ajtongue 132 projecting'intothe groove of the spool 120 to effect back and "lever is that movement of the spool to'the left cnitch the gear 113 to the shaft 111 and forth movement thereof when the moved in opposite direct-1011s.

The clutch for controlling niovementof the work advancing truck 28 back and. forth on its track andthe one for controlling the back and forth niove nentof the-unloading truck siiniiair construction tothefclutch above described. v t1 ese clutch mechanisms willnot therefore be required; but a description will be given of the gearing for each ands-thecontrollevers tat onof theshait 111 to raise the-elevators. a

A detailed descriptionot therefor. i The relative positions of the three separate clutches is-best shown in Fig. 14. e Theunloading truck drive will first bodescribed, it being-rememberedthatthis truck is moved :back and forth by the chain 101' on sprocket 105 which isf-keyed to shaft 103 hav ing aeear 107 thereon. Thegear 107 meshes with the gear 133 011 ashaft 13parallelin'g shaft 111. 'This shaft carries gears 135 and corresponding respectively to gears 112 and113 shown in Fig.13.- Gear 135-is driven by the pinion 123 on shaft 109 and gear 1136- by a p nion 137' On-a shaft 138 havingifixed thercona gearz139 meshingwith and'driv'en;

itsfront. end a sprocket 1146101. driving a Y chainlt? which in i'turn-drives a sprocket 1 18 on 'shaft435TFigs. 8 was: Shaft 46 carries a sprocket 415' servingt-o drive chain 44- 611 gaging the sprocket 43 on'shaft'l-l which-carries the'sprocket 40 for driving the'chain 38. The shaft. has loosely mounted thereon two gears corresponding to gears 1121 and'113,' oneot which-is'indicatedat 149-in' Fig. .14, this gear being in mesh "with. and driven by pinion ction 123:0nshait1095 The other gear is indicated at 150in Fig. 15 and is driven'by apinionf151 on ashaitf1520n which is fixeda gear 153 driven by gear 127 onthe drive shaft 109; Gears. 149 and 150yare rotated continuously onshaft145 andiare alternately coupledthere with "by-a clutchsirnilar; to that shown in Figs. 13and 18Wl1i0l1 is operated by a lever leetpivote'd at 155 and having its lower end pivotallygconnected with-a slide 156 carrying an inwardly projecting tongue 157 engaging in the groove of a, clutch operating i spool similar to that shown at 120 in Fig. 1

- The-drive shaft 109 has secured therOnijf sprocket 158 driren by a chain'159 whichin turnis driven by a sprocket .160 on the; shaft 161 of an electric motor'162 showninEigs. 1 and 3. A housing 163 is provided forgen closing said chain and sprockets-as, shown-in S bnt is omittedin Fig. 1. w e in order to permit of the shifting unloading truck -19 by manually/operated means when desired the clutch driven shaft 134- is provided with a sprocket16 1 on its frontend to bedriven by achain 165 which initurn is driven by a sprocket 166 on a shaft 167 journalled in a sleeve bearing 168 on the of the I gear box 48, Fig. 10. The shaft 167 has on itsenda crank 169 carrying a pin 170 arranged to take into any one of a series of holes, not shown, formed in the outer face of the head 171 which is rigid on the shaft. A spring 172 serves to normally hold the crank in the position shown in Fig. 10 but when it is desired to rotate shaft 167, the crank will be forced inwardly to move the pin 170 into one of the holes in the head 171 and the operator will then turn the crank to effect rotation of the shaft 134 to rotate gear 133 on its rear end which in turn will rotate gear 107, shaft 106 and sprocket 105 for driving chain 101.

For effecting manual operation of the chain38 which is connected with the work advancing truck 28, shaft 41 is provided with the same operating parts shown for effecting rotation of the shaft 167, namely, the crank 169, pin 170, head 171 and spring 172.

A safety stop mechanism is provided for limiting the up and down movement of the elevator 67 on the trucks 49 and which automatically effects reversal of the shaft 86 when the elevators reach their extreme positions as shown in Figs. 6 and 7. The automatic clutch releasing mechanism is shown in Figs. 11 and 13 and comprises a pinion 173 on the front end of shaft 111 which meshes with an idler 174 on a bearing 175 carried by a bracket 176 suitably connected with the gearbox 48. The idler 174' meshes with a gear 177 on a feed screw 178 journalled at its outer end in a bearing carried by the bracket '17 6 and having its inner end threaded into a nut 179 disposed in a pocket 180 of a slide 181 guided by the bracket 130 on which the lever 128 is pivoted, as shown in Figs. 10 and 11. The slide is provided with openings 182 at the opposite ends of the nut 179 for the reception of the screw.

The slide has a longitudinally extending slot 183 through which the lever 128 projects. At the opposite ends ofthe slot are adjustable set screws 184'and 185 which are'adapted to engage the opposite edges of the lever 128 to return the same to normal clutch release position. In the operation of this de vice, if the lower end of the lever 128 is moved to the right from the position shown in Fig. 13 to couple gear 112 with shaft 111,

the latter will rotate pinion 173 idler 174 and gear 177 to turn screw 178 in a direction to move the slide 181 to the left. 1Vhile the operator is holding the lever to maintain the clutch in coupled position with respect to gear 112, the set screw 185 will be advancing toward the lever and by the time the elevator reaches its uppermost position, the screw will have engaged and returned the lever to normal position, thus effecting release of the clutch. The slide 181 will then 'be in reverse position from that shown in Fig. 13. If the lever is then moved in the opposite direction to effect lowering of the elevator, the clutch will couple gear 113 with shaft 111 to reverse the operation of the same whereby to lower the elevator to the position shown in Fig. 6. Reverse rotation of the shaft 111 will drive the pinion 173 in a direction to effect reversal of the screw 178 and the set screw 184 will then be advanced by the slide 181 to automatically return the lever to normal clutch releasing position. In this way the elevator is prevented from passing or moving beyond predetermined limits in its up and down movement.

-Means is provided for clamping the work advancing trucks 29 and the unloadingtruck 50 to their respective tracks when they are adjusted to the desired positions. This means is indicated in Fig. 5 and comprises a clamp 186 adapted to engage the under side of the head of the rail as shown. A clamping screw 187 extends through the member 186 and is threaded into a member 188 suitably, secured to the lower portion of the truck 50 at one side thereof as shown. The head of the screw 187 is preferably squared to receive a wrench 189 for tightening and loosening the screw when desired. Similar clamping devices may be readily applied to the work advancing trucks 29 shown at the left of Fig. 3.

In the operation of the machine, the

trucks

28 and 29 are spaced 9. suitable distance apart to receive the bars or shafting 23, the desired number ofwhich are allowed to roll into the V-shaped holders on the trucks upon removal of the pins 31 from the platform 27, Fig. 1. The yoke 28 is then swung into position and the screw 30 is turned to clamp the bars within the V-holders 30; The

trucks

49 and 50 are moved to position to receive the ends of the bars which project through the V-shaped work support 11 when the

trucks

28 and 29 are advanced to the proper position on the rails 33. Operation of truck is effected upon moving clutch lever 154 to connect the shaft 145 with the driving means for the chain 38 whereby the power truck 28 is advanced and likewise the trucks 29 by the weight of the load thereon as explained above. When the bars have been advanced to project the proper distance through the support 11 the clamping screws 15 are turned to' clamp the bars within the support and at the same time operation of the screw 83 may be effected to clamp the projecting portions of the bars within the power truck 49. The motor 20 is then started and the slide 18 advanced to move the motor driven saw into engagement with the bars. As soon as the cutting operation is completed and the power truck 49 moved to its destination the clamping meanson the power truck 49 is released to free the severed sections within the V-shaped holder thereon. Lever 140 is then operated to connect the clutch on shaft 134 with the latter wherebyxto operate the driving meanstor the chain l01which is connectedwith and serves to move the power truck 49 back and forth between receiving and discharging positions. In moving the truck lll-tounloading position truck 50 will be advanced by the weight'of the load thereon as,eXpla-ined'above.- When the trucks have traveled to a position opposite the platform 56 the clutch is release'd'to discontinue operation of the chain 101. One of, the closures 57 is thenraised so that'the severed sec- Zions-62 may roll into the compartmentfio beneath said closure In operating the elevators on trucks 4:9 and to unload the sections, lever 128' is moved to couple the clutch on shaft 111 which serves to operate the driving mechanism for shaft 86,- which will move the elevators to the unloading position shown in Fig. 7 The clampin means on truck 49-has previously "been released and the sections are free to be discharged onto the platform '56; By the time the elevator reaches its uppermost position the clutch on shaftlll will be automatically movedto neutral position by themech anism. shown in Figs. 11 and 13 and described above. The

clutch-on shaft-111 is. then moved to reverse posltionand the elevators are lowered to the POSltlQII shown in F1 '6; On reaching this position the safety means will-again operate automatically to move the-clutch to neutral position as describe'dabove. 1

It {will be understoodthatthe term, bar material and the-like, employed in the claims is'used in a broad sense and is Zintended to applyto any and all kinds 'ofm'aterial fromwhich sections can be outwith a 'inachine o thepresent type."

, Thezpower truck 28 is the outside 'of the auxiliary support trucks 29 at or near the end ot' the track so thatthe bars can be clamped'near their extreme ends. The power truck 28 being outside of the auxiliary trucks will be limited in its movement toward the work support 11. However when it approachesuts limits of travel the work can then be clamped in the power truck 49 and the latter employed to convey the work through the machine "for severingby the cutting means.

The clutch mechanism cribed herein serves to control the movements both of the power. trucks 2S and 49 onthe opposite tracks and the movement of the elevators, the raising andlowering operations or are automatically discontinued at the proper tlme, by'a. portion of the clutch mechanism itself as described herein. It will be seen,

therefore, that all of the operations relating to the movement of the work between the different stations by the different power units areaiiorded by the single operating motor 162 and that the control is afforded by unitary clutch mechanism which isautousually placed on.

matic with respect to certain 'o f the opera-' tions. J

One particular advantage of a machine of this type is that the operations can be effected without having to wait for the service of a loading crane which may be engaged in delivering materials at other points at the n time it is desired to perform the operations of severing the sections from the stock. In other words, the platform can be stocked up from'time to time when the crane is not being used for other purposes and the machine operated When desired to complete the severing' and delivering operations, the latter taking place at any point desired along the track'52, as for example, at thestation 56 where the severed sections are discharged by the elevators for delivery to any of the several different compartments beneath the adjustable platform 57. i

I claim as my invention:

In a metal cutting machine, a base, a cutter thereon for severing sect ons from bars or the like, a support for holding the bars during the cut-tine operations, mean for a d vancing t is 1 are step by step to the support, a track, a truck movable on the track and arranged at one point to receive the portions to be severed from the bars in advance or" the severing operations, means for moving the truck to and from said point, a shaft on which the truck is free to slide when moved upon the track an elevator on the truck for lifting the severed sections to eii'ect discharge of the same from the truck, raising means for the elevator operated by s id shaft driving meansfor said shaft including a reversible clutch, and means operated by a portion of the driving means, adapted to automatically move the clutch from both operating posi tions to neutral position when the elevator reaches its extreme upper and lower positions,

a a chain andspr. lret drive between said shafts whereby the ii st mentioned shaft is made. to drive the 7 means for effecting reverse r tation o'i' the drive shaftto raise and lower the elevator;

means for movlngfthe .truclrbaclrand V tort-hon the track. 1

3.- in combination; a b'ase, a cutter mounted thereon. for severing sections from a work piece, atra'ck at one side of the base, truck for recei'ving theportions of the workto be' second mentioned shaft,

severed in advance of the sever-in operations arranged to travel on the track to andfrom receiving position, an cleva'ter cur; ed by the truck for lifting the secticas to oiiect dis charge ofthe same from the track, a drive shaft paralleling the track and on which the truck is free to slide when moved. back and forth on the track, means arranged to be driven by the shaft in an position oi he truck to raise and lower the elevator, driv mechanism for the shaft including a reve sible clutch, safety means operate; by t ne driving mechanism adapted to automatically move the clutch to neutral position when the elevator reaches predetermined lillliLS in its up and down movement, means for moving the truck back and forth on the track, and means for feeding the work to the cutter.

4. In a machine for cutting sections from bar material. or the like, a work support, cutting means for severing sections from the bars, a track at one side of aid cutting means, a work supporting truck comprising a recessed body for receiving the bars in advance of the severing operations and having wheels for supporting the body arranged to travel on the track, a bearing on the body, a rotary drive shaft journalled in the bearing, the latter being free to slide on the shaitt when the truck is moved back and forth on the track a rack bar mounted for vertical. movement on the body, a shaftjournailea on too body having a gear meshing with the teeth of the rack bar, sprockets on said shafts, a chain connecting q said sprockets, the sprocket on the first mentioned shaft being free to slide thereon and arranged to be moved by the truck when traveling on the track, an elevator for the sections connected witn the rack bar and arranged to effect discharge of the sections from the truck upon rotation of the shaft in one direction, driving means for the shaft and means for movin g the truck upon the traclc 5, A machine for severing sections from bar material and the like, comprising a work holder, cut-ting means for the work, carrying means for the severed sections arranged to advance them toa predetermined point and stationarily supported for holding the material during the severing operations, an ejector on the carrying means for discharging the severed sections therefrom at said point, power driven means, mechanism for moving the carrying means arranged to be actuated by the power driven means, actuating means for the ejector including a clutch arranged to be connected with the power driven means for operation thereby and means responsive to the power driven means for automatically disconnecting the clutch when the ejector is moved to apredetermined position upon the carrying means.

6. A machine for severing sections from bar materlal and the like, comprising a work holder, cutting means, reciprocably mounted carrying means for conveying the sections from the cutting mean arranged to receivethe portions of the material to be severed in advanceof the severing operations, a device for ejecting the sections from the carrying means movable in opposite directions thereon, mechanism for reciprocating the carrying means, power driven means for operating said mechanism and operating means for the ejecting device including reversible driving means arranged to be connected with the power driven means for reverse operation thereby.

7. A machine for severing sections from bar material and the like, comprising a work holder, cutting means, carrying means for conveying the sections from the cutting means arranged to support the portion of the material to be cut during the cutting operations, a reciprocally mounted ejector for the sections movable between predetermined positions on the carrying means, mechanism for moving the carrying means to and from receiving position, power driven means for operating said mechanism, reversible operating means for the ejector including spaced driving elements arranged to be individually connected with said power driven means, a coupling movable from a neutral position to connect either of the driving elements with said power driven means and means operated by said power driven means arrangedto return the coupling to neutral position subsequent to movement of the ejector from either of said predetermined positions to the other. 8. A machine for severing sections from .bar material and the like, comprising a work holder, means for advancing the material step by step to the holder, cutting means carrying means for conveying the sections from the severing means stationarily supported in position to receive the sections when severed, an ejector for the work movable between predetermined positions upon the carrying means, mechanism for moving the carrying means in opposite directions to and from said receiving position, power driven means, reversible operating means for the ejector including spaced driving elements arranged to be individually connected with said power driven means, a coupling movable from a neutral position to connect either of the driving elements with said power driven means and means operated by said power driven means arrangedto return the coupling to neutral position subsequent to movement of the ejector from either of said predetermined positions to the other.

9. 1X machine tor severing sections from bar material and the like, comprisinga base including holding means for the work, severing means for the work, means at one side of the holding means for advancing the work thereto for support thereby during the severing operations, a carriage at the opposite side of the holding means arranged to support that portion of the work to be severed during operation of the severing means, means for moving the carriagein a direction away from the work receiving position to a predetermined position when the sections have been severed, elevating means on the car riage for :moving the severed sections to effect their discharge from the carriage when the latter is at said predetermined position, constantly driven power means, reversible operating means for raising and lowering the elevating means arranged to be driven by said power means", and means responsive to a portion of said reversible operating means serving to discontinue operation of said i reversible means by said power means when the elevating means approaches the limits of its up and down movements.

10. A machine for severingsections from bar material and. the like, comprising sup porting means for the work, means for severing the sections from the work, carrying means for the severed sections arranged to 5 support the portions to be severed during operation of the severing means, means for moving the carrying means to andfromposition to receive and support said portions, an ejector on said carrying means for the severed sections movable back and forth between predetermined limits, constantly driven power means, operating means arranged for connection with said power means to move the ejector back and forth between said limits in a predetermined position of the carrying means, and means arranged to be actuated by a portion of the ejector operating means to discontinue operation of the same when the ejector approaches said limits.

11. A machine for severing sections from bar material and the like comprising supporting means for the work, means for severing the sections from the work, a carrier for the severed sections arranged to receive the portions of the work to be severed in advance of the severing operations, a support for the carrier upon which the latter is movable to and from said work receiving position, means for moving the carrier upon said support,

an ejector on the carrier for the severed sections movable back and forth between predetermined limits, a reversible shaft upon which the carrier is free to move longitudi nally, means arranged to be actuated by the shaft for moving the ejector between said limits, constantly driven power means, reversible operating means for said shaft ar-' ranged for connection with said power means for operation thereby in opposite directions,

and means controlled by said reversible operating means arranged to discontinue operation of the latter when the ejector approaches its limits of movement.

WILLIAM WELOH,