US917296A - Can-blank-forming machine. - Google Patents

Description

S. L C. H. HOCKEY. CAN BLANK FORMING MACHINE. APPLIOATION FILED`AUG.B,1907.

Patented Apr. 6, 1909. 8 SHEETS-SHEET l.

Illfllllllunmltu rs S. L C. H. HOCKEY. CAN BLANK PORMING MACHINE.

APPLICATION FILED .\lm..1no1.

Patented Apr. 6, 1909.

s. & C. H. HOOKBY. CAN BLAK PORMING MACHINE.

APPLOATION TILED AUG.

Patented Apr. 6, 1909.

B SHEETS-SHEET 3.

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u L y@ s. 55 C. H. HQOKEY. GAN'BLANK FORMING MACHINE.

APPLICATION FILED AUG. 8,1907.

Patented Apr. 6, 1909.

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S. & C. H. HOKEY.

GAN BLANK FORMING MACHINE. ATPLIOATION FILED AUG. a, 1901.

Patented Apr. 6, i909.

8 SHBETB-SHEET 6.

TIE E S. & C. H. HOOKEY. CAN BLANK PORMING MACHINE. APPLICATION FILED AUG. 8,1907.

917,296. l Patented Apr. 6, 1909.

8 SHEETS-SHEET 6.

T I E 1 1 @un mtu rs s www Ho okay s. L C. H.,H00KEY. GAN BLANK FORMING MACHINE.

APPLICATION FILED AUG.8.1907.

917,296. Patented Apr. 6, 1909.

a SHEETS-SHEET 7.

lune-murs,

S. & C. H. HOOKEY. CAN BLANK FORMING MACHINE.

APPLICATION FILED AUG; B, 1907. 91 7,296 Patented Apr. 6, 1909. 8 SHEETS-SHEET 8.

Hf. L Www 'ummm SAMUEL HooKEY AND cnARLEs'H-.nooimn on WYANDQTTE, MICHIGAN.

, aannam-Pennine MACHINE.

specificatiqnof Letters' Patent.

Patented p rn 6,1600'. 3.

Application med A ugust 8, 1907. Serial No. '$37,577.

To all whom 'it cfmcem: 7

Be a'known that we, smULHooK/af remains after the is a plan view of our can-blank to 1S on still larger scale.

.line 4-4 of- Fig. 1.

United States, residing at Wyandotte, in the county of Wayne and State of ltliclii'g'aLn.,

have invented a new and useful Can-Blanka s ecication.

- ur invention relates to means foi" cutting'. can blanks andbending one end of each ready lead tothe secondary drives afts 2 and.. t is .necessary that these connections. betWeenth'e main and secondary shafts shall be fer-.the body' forming machine, and itcon'- sists in a novel shearing mechanism, a novel feed tocarry the sheets o'f metal under the shears and the blanks from the shears to the Abending mechanism', in novel mechanism for bending an 'end 'of eacli of the blanks, andi'n the novel-ejectiug means for the 'strip that blanks have been cut from vthe sheet.

lt -furtlicr consists 'p whereby the different feeding Lineansarereiidered yieldable' to accommodate unequal widthsand lengths, and also` that in case of accident, breakage is avoided as' far as posoperator upon the horizontal bladesIOjCFi.

12)- by which itissupportedabove the fee of the' same.

lt further consists in novel details of construction, fully' described'.` in -the ,following specification and particularly pointed -out in tie'claims.,

In the accompanyingdrawings, Figure 1 orming machine. Fig. 2 is an elevation of the left sideV and Fig. 3 an 'elevation of the right'side o the same. Fig. 4 is a cross section on the Fig. 5 a plan of the feeding-mechanism for the sheets of material,

the table being omitted. Fig. 6 is a view. ofl the feeding mechanism which' carries the" blanks from the shears to the bending mech.- anisni\vith the table removed. Figs. 7 and' S are views from the front of the blankbending mechanism. Figs. 9 and 1 0 are views from the right and front of .the shears. Fig. l1 is a' detail of -a safety device. isan ex lanatory diagram of the sheet grippers. 11 ig. 13 is a front elevation of the sheet clamps operating mechanism. Figs. I4 to 1S are details. Figs. 1, 2, 3, 6, 7, and 8 are on the same scale, Figs. 4, 5, 9, 10, 12 and 13 on another, somewhat larger,- an'd Figs. 1 5

adapted to cut four 4can blanks from a one end' of the blank, and e'ect the same from the machine into' the a jacent can body seamer.

' These controlla parts throughout the several views. t

- The machine s hown m the drawin is 'eet eject the strip that remains, Abend The .mczanism.-+The drivingshaft' I of the machine is driven 'in desired* manner, andfrom it, s rocketcliains vmeans' vorthe secondary .shafts'may be' ein.-

ort a -table 5, and--cross'bars 6 an cured to the to of. the table. Aare bearin 8 for; the-.contro ers' '9. -See- 'Figs. I an 2. are cross-sha led in. .cross-- Sirriilar reference characters refer te. like The 'sheetfeed'ing means-.Q-The'les'd mpesection and the'sheet of metal is laid-by the' 'ing mechanism until the previous sheetv has passed through the shears. The controllers thenturininwardl emitting the sheet to vfall to the table, wlii e at the same time, the

vertical blades 11 assume the position previouslyT` occupied by thehorizontal blades I0, 'but being above the sheet, prevent it from rising.

Ratchet wheels 12 are' secured on the ver I6 to the lever arm 19 on the shaft 2U.

A second lever 21 on this shaft projects horizontally and dependingv from. it is an' actuating link 23,'lield between the cam 24 and the collar 22', both secured to tlieshaft'25. The

link 23'caries a pin 50. which slides-inthe" cam groove 51 in this cam, so that at each revolution of the shaft 25, that is, at each 'cycle of the machine, the controllers will turn through one fourth of a revolution.

The shaft 2'5 is supported by the cross bars.

6 and on its right end is securedl a sprocket Wheel 26 which has four times the number los I, of teetlibf' the sprocket wheel 27 on the secondary shaft 2, so that the shaft 2 revolves four times witheach cycle of the machine.

On the shaft is secured a disk 30 provided with a cam slot on' each side. 'Pivoted on the shaft 31 mounted on the cross-bars 7 is a. slotted lever .32, which has-.af in- 33 that travels in th ycam s lot on tlerig t side of the disk 30. .f rackets 34 'and 35 project from the front and rear of lthe legs 4 and carri); guide/rods 36. Onthe front portion of t e se rls-a saddle 3f/ is slidable, and a pin 42 m/.unted on the lower sidethereof is connecte/d to the lever 32 by the'link 39. A

lever, comprising' ,the upright arm 40, is. *mounted on the horizontal pin 38 carried by the saddle 37. A stii` spring 43 under the free end ofthe arm 41 holds the button 44 at the upper?l end of the arm 41 forward.

` during the time the portion 47 of the cam slotppasses the pin, vthe button 44 moving forward .a -short distance to relieve the blank frompressure which might otherwise cause p oor shearing. This retrograde movement of'the button -44 -occurs immediatelyr after the pressers 87 have engaged the sheet as hereinafter described he next portion 48 a ain moves the'button 44rearward the widt 1 of one blank, and the portion 49 brings the button to starting position. The sheet `has .then been moved two steps by this mechanism -and the pusher has returned to normal position. During the. time the pusher has been returning, the `sheet makes two more moves under the guidance of the following described mechanism. On the oppositeside of the disk 30 is a similar leh ver 53, pivoted on the shaft 31, and having a pin 54 that engages ina second cam slot 52 on the opposite side of the disk 30 as indicated -by dotted lines. To the bottom of the table 5 are secured two pairs of uides 55 each' ead 56, to which are pivoted the feeders 57. The arms 58 of the feeders connect to the v.vertical arms 59 on the cross-head 60 by means of links 61. A link 62 connects the upper end of the lever 53 tothe cross-head 60. As the pin 54 travels in the cam slot 52,

- thelever 53 will have al1-intermittent movement corresponding to that of the lever 32, but because of the positions of the cam slots, the vlever 53 wilbmcve one feeding step toward the rear while the lever 32 moves for- -the 'sheet its fourth step.

of ywhich supports a cross-.

`strip or edge of the original sheet.

lever 5 3 will move forward a short 'distance while awaiting thev shearing of the third blank, then move rearwardlyvagain to move of metal is being fed to the she/ar by the but- .ton 44,.it rests on the table 55. The feeders 57 must then be beneath'the surface.

They are' therefore so? ormed (see Fig. 4) that when returning, the push on the lower end of the lever/arms 58 depresses the rear ends hen the sheet of the feeders, as 'shown in full lines in Fig,

4, while a pull on the link 61 elevates-these ends out of the slots 63 in the table 5, as indicated by dotted lines. The bolt 64 controls the` amount the end can be elevated. The pins 65 forming these ends are spring held, similarto the .construction'shown in Fig. 11.

The sheare-Secured on each side of the table 5 are side-bars 66 of theshear frame. Lugs 67 rojectfrom the Asides of the table 5 and gui e the collars 68 on the screws 69 which engage the lugs 70 on these side-bars -to\ adjust the same, and with them, -the shears. lThe shear frames have T shaped slotted ends 7.1, forming uides, in which are munted 4the adjustable iners 72.- Secured on the shaft 2'are the cams 73 and collars 74 (Figs. 9 and 10). Shears actuating plates carry rollers 76, which engage the cams, and have slots through which the shaft 2 passes, these lates each being held in vertical position y a cam and a collar 74. The` upper ends of t e plates are bent and to each is attached la stem 78, passi thro h a bracket 79 mountedon a croslslgbar 6 o frame of the machine. The stems 78 are attachedat their upper ends to the shear Ayoke 80, Which is ou ided in thel slotted ends 71' of the shear ames. Springs 81, rest on' the brackets 79 to hold the shear yoke elevated. In Fig. --9 the leftshear frame is removed and part of the table 5 is in cross section.- -The stationary shear member 82 is mounted in the end ofthe table 5. The blade 83 is mounted on the shear yoke 80. A plate 84 is mounted on this oke and earries pins 85 and brackets 36. mounted on the 'pins 85 and carry rods 88 which are'slidable through the brackets 86. Springs 89 tend to hold the pressers down. As' the pressers arein advance of the shears the ressers 87 are (Fig. 10) they will contact with the metal y The trimming e 'eaten-After the last blank has been sheare there remains a narrow To remove this we provide avslot 92 in the right shear frame (Fig. 2) through which the -strip may be 'ejected- 4Through a similar slot 93 in the other frame (Fig. 15) is'slidable an ejector rod 94. This rod is connected at one end to. the upper end of the leverA 95,

. ejected through the opening 92. 15

mounted on the frame at 96,.V (Figs. 1 and 3) which lever has a beveled head 97 at its lower end, which head presses against the face ofL the cam 24 .under pressure o f the spring 98. Whenever the opening 99 registers with this head,' the spring 98 will throw the rodv94 to the-right and the head 97 to the left into this ope 99 and the Waste strip of, sheet metal 1n thepath of `-the rod. 94, will be hears equalizerzReferring to Figs. 3, 9 and 10, a cam 100' will be noticed-on the shaft 2, which cam is adapted to engage the roller 101 on the plate 102.. This plate has a .slot 103 lthrough which the shaft v2 passes.'

The upper end of this plate connects to the stem 104 which passes through the bracket 105. A crossbar 106 is secured to this stem -104 and carries the side-rods 107,l which also pass through t-he bracket 105, and which carry the springs 108. These springs are adapted to produce considerable pressure between the roller 101 and cam 100.

' It willabe noticed that the cam 100 is gen` erally concentric, having only a short depression, and that this depression is opposite the. high points of the 'cams 73.` When the cams 73 cause the shear blade 83 to reach its lowest limit, thereby putting the springs 81 under the greatest stress, roller 101 will descend, assisting in turning the shaft 2. .When the rollers 76 have passed the highest points on. the cams 73, the springs 81 will assist'inturns -which also revolve at the same rate as Shafts 2 and 3. Referring now to Figs.6 and 8, the shaft 114 carries'cam -disk 115 having a slot`116 in which slot .the pin 117 on the link, 118 is adapted to travel. The opposite end of the link connects -to the arm 119 of a bellcrank-lever 'mounted on the -pin 120, the other arm 122 of the lever connecting to the gross bar 121 by means of. the link 123. Aruid'es 124a secured to the table 124 support 129 formi the slidable hooked conveyers 125 which are' connected to the cross-bar 121 at one end; f and have upt-urncd arms 126 at the other. I

of the arm 158.

(See Fig. 15

Secured to tho front edge of table 124 is a bracket 1 30 which also connects to, 'the rear l can blanks.

y917,296' i f 8 edge of the table-5. This bracket is slotted to permit the upturnedarms 126 of theblank conveyers to pass across. On this bracket 'are secured the guides 131 which engage the ends -of the blanks when the move across, keeping them in position. langes tend'inwar y and rearwardlyand the blank is thereby prevented from springing up when moved to the rear by the arms 126. I

.When the shears are cutti off a blank,

the end s 126 will be at the pos1tiou shown in' Fig, 15. 'Ihe blank falls and rests on the.

' bracket 130.'v 'The arms 126begin't'o move to the rear assoon as the shear blade 83 has reached the end of :its operative movement, ca 'nig the blank to the rear and placing it onrih; ange 132 ofa ixe'd su port 133, and on the lange134 of the -movab e Support 135. A vertical guide 136 on the front of this movable support insures a proper position for the blank.

The width of the blank is controlled by the .position of the bai-'1140, positioned by the pins 141 carried bythe brackets`142 projectmg from the shear frames. lSprings 143 between the bar 140 and thebrackets' 142 re- 'ventinju1"`y. The springs 143'are stiffer-t an 'the springswhch position-the feeders 44 and 57 so that the sheets willl always be of the desired width. l. Owing to. this bar 140,v the portions of the guides 131 ex- Iso' blanks will always f all' properly onto the bracketv 130.'

It sometimes 'happens that 'the blanks hangbetweenthe bar 'and the edge of the table 5. To prevent this, we mount the .ends of the bar in slides 200 which are carried by the guides 202 secured to the brackets 142, which are slotted to permit the ends of the bar-1.40 .to pass through. On the ends of the shear yoke 80 we secure the plate cams 201 which at each movement of the shear yoke will engage the ends of the slides 200 and force back the bar 140, permitting the blank .to fall freely. The spring 143 returns the bar to normal position. Y

The blank bendingmechanis'nf-It is desirable to curve one end of the can blank hefore it is passed to a -body seaming machine; To do this we secure a cam on the shaft f3, and adjacentto it mount a plate: 151 (Fig.

17) having, a downwardly extending guide finger. 152, a laterally extending operating inger'153, and a pin 154 to travel in theeam slot 155. The nger 153 fits between the jaws at the end' of the arm 156 on the shaft 157, which shaft also carries the arms 158 and 159.

' Mounted in bearings at thel left odge of th(l table 124 is a shaft. 160, having an arm 161 secured thereto with its outer ond in the path On its forward end is mounted the movable support. 135 for the A spring 162 connects the arm Vinder. end ofthe blank as it ,lies onthe iianges 132 down that ling the guide for the that in Fig. 8, carrying 161 to the bracket 163 andfnorm'ally holds the movable carrier 135 in the pcsitibn shown in Fig. 8. o 'i The outer end of the arm 159'carries a presser 165 in the formof a section of a cyl- Thiaisv adapted to contact withjone and 134- of the supports, and press end against the en d of the ejector. Just be'- fore the presser 165 has reached. `the lovver endet its movement', the arm 1581engages the arm l` 161, su-'inging outwardA theysupport 135. and permitting .the blankV to `fall onto Aidhe .formed in the manner show'n in Fig. 14. A

shoe '170 is secured.to the end of the plate,-

,c andpiiroteduto the shoe is a latch 171 having in position.

`carries a pin 193 .205 held in sleeves a lip 172. The lateli' is normally' held'in position by the spring' 176 .on the pin-175 carried by the bracket'174. Any unusual obstructionwhich may )revent the finished blank from being ejected will cause the blank to press back-the lip 172 to the )osition indicated by the dotted lines, which will permit tpe blank to slide up alongthe face of the s 10e.

Connected to one of the pins 168 is a.' link 179, consisting of a sleeve 180', a rod 181 slide able therein, a p in 182 fixed in the sleeve and passing through the slot 183 inthe rod, and a still spring 184 to normally hold the-parts Any extraordinary stress Will cause the link to shorten and so avoid break- 'lhe richt end of the link 179 isconnectcd tothe end of the arm 185 of a bcll-crank-lever mounted on the pin 186, the other arm 187 being? rounded and passing through a pin 188 held in a'sleevc 189 at the end of aplatc 190. rThis plate isheld between the collar 191and cam disk 192 on the shaft 3 (Fig. 1) and that engages the cam slot 194, (Fig. 18). The operation of this cam causes the arm 185 to move the eiector back and forth across the machine -after each dcpression ofthe arm 1 59 to bend the end ofthe can blanks.

A blank after being curved by the presser 165 may Ajump back, as this ipresser acts very much like a hammer, an( toprevent. this, we provide the pointed, spring held pins 206, which pins will proiect over the blanks after they are bent. The pins, being spring held, will move out of shown in Fig. 7 to:

' f the ivay of theu shoe'170 as it moves to eject the blank.

Operation-idle operator places a sheet of metal on the horizontal Hang-,es 10 of the controllers. I'hen the machine has linished shearing the previous. sheet, the controllers t`urn-and de )osit the sheet on the table 5. The npwar y projectingv lingers 207 are guides for the sheet. The button 44 moves vtvvo steps to the rear, each step equaling the desired ,Width of a blank. The cross bar 140. prevents the sheet moving too far. "While the .sheet ismaking these steps and stops, the

ars also` perform'their function, cutting oif..,theiblanks.-,l -As the. shear blade 83 dewhich obviates the further necessity of the cross -,bar 140,which is' accordingly moved to Athe realfby means .permitting the 'shearcd blanks to fall freely to the bracket 130. The button 44 having moved the sheet two steps, it stops, and lcturns to -the front end of the table. pins, no\vengage toward the rear by tvvo steps, separated by a rest, during which rest the pins recede While the shears cut of a blank. After the second the sheet. and move it- 'of the cam plates 201, thus step, the feeders 57 return to normal position below the top'of thetable. The narrowstrip remaining'on thetable 5 is' ejected by the rod 94N From eighty to ninety blanks can be cut out each,'rnim1te by this mechanism.' As fast as 'the blanks are cut, they fall onto the bracket and are carried across onto the supports 132 and 134., The lever 159 swings down, striking the right'end of the blank a sharp blow with its partly-cylindrical end 165, bending the blank to the desired form. The arm 135 swings out at the same time so4 the blank vmay rest on'the plate 166 and bc ejected by means of the lever and its connected mechanism. l.

Having now explained our imp rovcmel its, what we claim as our invention and desire to v`secure by Letters Patent isc-- 1.1Thc combination of shears .for sheet metal, a table on which the sheet metal may be supported, a feeding` device adapted to move the sheet -toward the shears, and a second feeding; device adapted to move the sheet toward the shears after the'lirst feeding device has complet-edits stroke and is returning to original position.

2. rThe combination, of shears for sheetrnetal comprisilu,- stationary and movable cutters, a table on which the sheet metal may be sup wrt-ed, a feeding device n-ojccting above'tlie table and adapted to feed the sheet to the shears, land a second feeding device normallyr below the level of the tablcand adapted to project and `feed thc sheet altcr the first feedingdevice has ceased to act.

3. rlhc combination with shears comprising stationary and movable cutters, ot' a table for supporting sheet metal, a feeding iio , the feeding devices connected to -each lever strip remaining on said y table after the y 'tween said steps, and means to operate said shears comprising cutters, of a .table upon which said shearsare' mounted, a shaft of intermittent movements.

.4. rl'he combination -With sheet-metal mounted below -said table, cams mounted on said shaft, leversl operated by the said cams, and feeding devices connected to said levers,

beingadapted to independentlyT move the sheet totvardthe shear.

5. The combination, of a table, shears mounted upon the end ofthe same comprising stationary and movable cutters, controllers'revolubly mounted at the sides of the table and comprising revoluble iiuted inem* bers, means to intermittently revolve said controllers, and feeding devices projecting through said table when in operative position for successively moving said sheetto the shears. 1 f j 6. The combination of a table to support sheets of metal,l shears adjustably mounted on said table and comprising a stationary cutter, a vertically movable yoke, a cutter secured thereto, pressers -adjustably mounted; on said yoke, and springs engaging said pressers and adapted to hold them below the lower yedge of the movable cutter, whereby said pressers will engage the sheet metal and hold the same down on the table during the cutting operation..

7. The combination with a table, of shears mountedthereon, means to ,feed sheet-metal plates to said shears, and a spring operated rod for ejecting the Waste shearing operations havebeen com leted.

8. The combination of atab e, sheetmetal shears mounted thereon, feeding mechanism for moving a sheet of metal two steps toward the shears and permitting a shearing operation between 'said stepsa second feeding mechanism for feeding theA sheet two additional steps toward the shears and permitting a shearing operation beshears four times during the complete operations of the feeding mechanism.

9. The combination of a shaft, shears 'driven thereby, a second shaft driven by said first at a fraction of the speed of the first, a feeding device for moving sheetnie-tal plates intermittently to the shears, a second feeding device for intermittently feeding the "-,sheet to the shears after the operation ofi, the first feeding device has been completed, said shears operating at the end of cach feeding step, and a cam secured to said second shaft for .operating said 10. The combination of a table, a shear member secured thereto, a shaft mounted below said table, camsv mounted on said shaft, a shear yoke mounted for vertical movement, a shear member secured thereto, means secured to said yoke and adapted to engage said cams whereby said cams may operate said shear yoke, springs to elevate said yoke, an auxiliarycam mounted onsaid shaft, a spring pressed device for engaging said cam,

said auxiliary cam being so proportioned that said cam engaging device will assist the shaft in actuating said shear yoke 1n its operative stroke, and resist the action of said shaft on the return stroke of the shear yoke.

' 11. The combination of a table, a frame mounted thereon', shears mounted in the frame, a laterally movable bar slidably mounted in the frame, springs to so hold the bar as to determine the length of the article to. be sheared, and means-to move said bar laterally andaaay from the article to be shear-ed. A

12. The combination ofa table, shearV frames secured thereto, a shear yoke mounted in said frames, a bar slidably mounted in said frame andnormally positioned to determine the lengthA of the articles to be sheared, and

. cams mounted on the yoke to force back said bar. I

13. In' a can blank machine, the combination ofl a table,v shears mounted thereon, f

means for intermittently feeding sheets of metal to said shears, said feeding means receding durin the shearing operation, a second set of feeding means to move said sheet metal in a similar intermittent manner, means to operate each set of feeding means independently of the other, and means to convey the can blanks from the shear.

14. In a can blank machine, the combina tiony ofa table, shears mounted thereon, two sets of longitudinally movable means for feeding sheets of metal to the shears, the feeding means of each set `receding before the operation of the other set, means to operate each set of feeding means independently of the other, an ejector for the waste material, and means to actuate the ejector after the completion of the operation of both sets of feeding means.

15. In a can blank machine, the combination of a table, shears mounted transversely thereto, means to feed sheet-nietal longitudinally of the table to said shears, means to longitudinally convey the blanks Ifrom the shears, means to bend one end of the blanks,

and transversely operating means to eject the blanks from the side of the machine.

second half of the die mounted above the rst, a conveyer to carry the blanks from the shears onto the ejector, andv driving means to first operate the shears, then operate the conveyer to carry the blank between the dies5 then operate the upper die to bend one end of the blank, and then operate the ejector to carry the blank out of the machine.

In testimony whereof, We have signed 10 this specification inthe presence of two subscrlblng wltnesses.

' SAMUEL HOCKEY. CHARLES H. HOCKEY Witnesses: l

JOHN F. MOINERNEY, RICHARD CMEIALMQ.

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