US605928A

US605928A - Device for metal straightening and cutting-off machines

Info

Publication number: US605928A
Authority: US
Publication date: 1898-06-21
Anticipated expiration: 1915-06-21

Description

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I'. B. SHUSTER. DEVICE FOR METAL STRAIGHTENING AND CUTTING-OPP MACHINES. No. 605,928. Patented June 21,1898.

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Y P. B. SHUSTER. DEVICE FOR METAL STRAIGHTENING AND CUTTING-OPF MACHINES. No. 605,928. Patented Julie 21,1898.

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' FRANKLIN B. SHUS'IER, OF NEV HAVEN, CONNECTICUT.

DEVICE FOR METAL STRAIGHTENING AND CUTTING-OFF MACHINES.

SPECIFICATION forming part of Letters Patent No. 605,928, dated J une 21, 1898.

Applicant nei my 21, 1897.

To @ZZ wiz/0771, it may concern:

Be it known that I, FRANKLIN B. SHUSTER, a citizen of the United States, and a resident of New Haven,- in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in an Electric Operating Device for Metal Straightening and Cutting-Off Machines, of which the following is a specification.

My invention relates to metal straightening and cutting-olf machines whereby the metal is straightened and cut off to a predetermined length; and it consists, essentially, in automatically governing the actions of the feeding and cutting-off mechanism by electricity, so that when the metal has been fed a certain distance or predetermined length the electric circuit will be closed by the forward end of the metal and instantly bring the feed-rolls to a standstill and .the cutting-off mechanism into operation.

In this present application the electric appliance is connected with a sheet-metal straightening and cutting-off machine for which an application forLetters Patent was liled by me June l5, 1896, Serial No. 595,518. i

My invention further consists in certain Y improvements on the said machine, to be more fully set forth in the following specification.

To enable others to understand my invention, reference is had to the accompanying drawings, in whichy Figure l represents a side elevation of the sheet-metal straightening and cutting-off machine with the electric device for operating the feeding and cutting-off mechanism attached thereto, showing also broken view of one of the table-rods. Fig. 2 is an end elevation of the machine, broken view of the tablerods, trip-plate-supporting bar, and overhead tubular supporting-shaft for the table mechanisin through a a, Fig. l. Fig. 3 is an enlarged longitudinal sectional view of the machine frame or head'through line Z) of Fig. l, showing more clearly the operation of the electric mechanism for operating the cuttingoff and feeding mechanism. Fig. Liis a detail enlarged View, partly in section, of the mechanism for operating the feed-rolls. Fig. 5 is an enlarged detail plan view of the mechanism for operating the feeding and cuttingoif mechanism, broken sectional view of the Serial No. 637,503. (No model.)

1nachine-l1ead,and broken View of the operating-shafts and the cutter balance-wheel or driving-pulley. Fig. 6 is an enlarged detail broken View of the trip-supporting rod, electrically-connected rod below the same, andv broken view of the electric wires connecting the two rods. Fig. 7 is an enlarged broken detail rear end View of the machine-head and .rearvend elevation of the electric shipping mechanism, the cutter balance-wheel or driving pulley, and standard supporting the driving-shaft of the cutting-off mechanism. Fig. 8 is an enlarged detail end elevation of one of the table-rod supports, table-supporting arms, trip-plate, supporting-hanger for same, sectional view of the rod supporting such hanger, sectional view of the two-part table, table supporting rods, and overhead tubular shaft. Fig. 9 is an enlarged broken detail View of the two-part table, showing rods laid longitudinally along the upper surface to decrease the friction incidental to the passage of the metal sheets along such table.

\Vhile,as before m entioned,the electricallyoperating feature for controlling the movements of the feeding and cutting-off mechanism is connected with a machine adapted for operating upon sheet metal, it will beunderstood that it is equally well adapted for other kinds of metal wherein it is necessary to cut the same into predetermined lengths. Therefore the gist of my present invention resides in the electrical controlling feature for operating upon all such classes of machines. rlhere are also certain improvements relating to my former application which are shown in the drawings and will be described and claimed in this present application. The other features of construction that were fully shown and described in my former application will be again reverted to in this present case merely to show the application of the electrical device to this particular machine. Its construction and operation are as follows:

l represents the machine-head; 2, the five feeding and straightening rolls, journaled in the boxes 3, located in each side of the machine-head; 4, tightening-screws therefor; 5, a tubular supporting-shaft, supporting the table-operating mechanism, one end of which is rigidly mounted in the top of the cuttingoff-press frame G, integral with the machine- ICO outside of the machine, having binding-posts 81, to which the battery-wire 82 and the pushbutton wire 83 are attached.

The latch-trip lever 85 (see Figs. 1, 5, and 7) is pivotally supported in the bracket 86 and has the spring-actuated pawl .87 at its lower end to engage with projection 88 of the electric latch. This electric latch being a familiar and well-known device for locking and unlocking a bolt engaged with a pivotally-supported catch controlled by a magnet adetailed description of such latch is not necessary, especially as it forms no part of my presentinvention. The upper end of the said trip-lever projects above the horizontal lever` 54 and between which there is a firm engagement when the said trip-lever is engaged with the electric gate-latch.

The operation of the electrical device in connection with feeding and cutting-off mechanism is as follows: Vhen the mechanism is in the position shown at Fig. 8, the feeding and straightening rolls are in operation to feed the metal-along the two-part or folding table until the end thereof engages with the trip-plate 38, causing the same to swing and bring the contact-points 48 and 49 in contact to close the circuit, whereupon the trip-lever will be instantly released-from the electric latch, and the power of the retractile spring 89, attached tothe end of lever 54, will draw the end of such lever around against the stoppin 90. This action will throwthe trip-lever 85 into the angular dotted position shown at Fig. 7 and will also throw the opposite end of lever 54 outward, so as to withdraw the rod 66`sufliciently to disengage the key 68 from its engagement with the toothed face of the hub of gear 65. The Withdrawal of this key will instantly bring the rolls to a standstill. The tilting movement of lever54, before mentioned, will also throw the lever 51 in the opposite direction, causing the forward end of such lever to strike the vertical arm 91, Fig. 5, of the bell-crank lever 92, pivotally supported to bracket 93, as shown at Fig. 7. The horizontal arm 94 of this bell-crank lever will (by the action just described) strike against the arm 95 (see also Fig. l) of the key-lever 96, pivoted to the stud 96a.v The lower end of this lever being engaged with the spring-actuated key 97, Fig. Z, will be raised sufficiently to release such key and permit it to move forward to engage with the driving-pulley 31, thereby imparting motion to the shaft 18, causing the knife 29 to move up and sever the stock. The instant this isy done the cam 17011 shaft 18 will actuate the segment-gears 19 and 20 and open the table (see dot ted lines of such open table atFig. 8) and deliver the severed sections below the machine.

As it will require one revolution of the shaft 18 to eect the cutting of the stockand return the knife to its normal lower position in readiness for another'upward stroke, the cam 50 is so placed that when the lsaid knife is descending the said cam will engage with 'roll 53 of the lever 51 and force the end of such lever away from the vertical arm 91 of the bell-crank lever 92. This operation will release the key-lever 96, and its retractile spring 97 will bring the said lever into engagement with the driving-pulley key of the cutting-off mechanism and instantly bring such mechanism to a standstill.

The tilting movement of the lever 51 (just described) will also tilt the lever 54 and through the medium of rod 66 force the key 68 into engagement with the hub of the gear 65 of the roll mechanism and set the feedingrolls again in operation. Then the outer end of the lever 54 is moved in the direction of arrow o', Fig. 8, the retractile spring 98 (see also Fig. 7) will cause the trip-lever 85 to rengage with the electric latch 88 and its opposite end brought against the said lever 54. In this manner the operation of feeding and cutting off is made continuous and automatic, it being understood that the drivingpulleys 31 and 60will always be in motion, while the gear 65 and the shaft I8 will run or remain at a standstill as required. .v

In my former application the feeding and straightening rolls and the cutting-off mechanism were automatically shifted from one to the other entirely through the medium of cams and levers, and it was impossible to stop the rotation of the feed-rolls quick enough to cut off sections to an exact length, as when the lever was released to engage with the key and withdraw it from the drivingwheel of the feed-roll mechanism the drivingwheel would continue through an unfinished vpart of its revolution until the key was engaged by the said lever and drawn back. Thus the feedingof the metal would continue, and in case of very thin stock would buckle and form. longer sections than required, and would also make such sections more or less uneven in length.

In the present arrangement the face of the hub of gear 65 is provided with any number of clutch-recesses, so that the instant the circuit is closed the key is withdrawn and the rolls stop instantly.

The object of the spring 76, Fig. 4, in the head 74 is to furnish a relief for the pressure on the levers 51 and 54 when the rod 66 is moved in toengage the key on its end With the clutch-face of the gear 65. Should the end of this key strike on the top of one of the teeth on the face of this hub and no relief be furnished, something must needs break. Therefore the spring 76 will give just enough to save the time required for the said key to fall into a groove. As before stated, this feature of controlling the movements of the feed-roll and cutting-off mechanism is applicable to any and all classes of machines where the metal is to be cut up into predetermined lengths, whether wire or sheet metal, and I hold myself at liberty to apply it to any and all such machines. v

The push-button 84 is arranged so that the.

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feed-rolls can be stopped by hand Whenever it is observed that there is a bad spot in the metal being fed along, whereupon the cutter will be brought into operation to sever the defective strip, when thc machine can continue as before. lt Will be understood that p11sl1-buttons can be placed at any convenient part of the machine when required.

It will be readily understood that while l show certain fecdin g and straightening mechanism and mechanism for cutting off sections of the stock l do not Wish to be confined to the exact details of construction shown and described. Neither do l Wish to be strictly confined to the exact details of construction shown for operating the feeding, straightening, and cutting-olf mechanism through the medium of electricity, as these constructions could be varied to suit the different machines 'to which they may be applied. lf desired, the straighteningrolls may be dispensed With and rolls used simply for feeding.

Having thus described myinvention, what l claim as new, and desire to secure by YLetters Patent, is

l. ln a machine for feeding and cutting olf metal strips or rods, into predetermined lengths, of independentlybperating feeding and cutting-ell' mechanism adapted to operate alternately, a system of electric Wires connected with a battery or other source of electrical energy, a circuit-closer adapted to be engaged by the end of the metal strip or rod and thereby close the circuit and bring the feeding mechanism to a standstill, While the cutting-off 'mechanism is operating to sever a section from such strip or rod for the purpose set forth.

2. ln a machine for feeding and cutting olf metal into predetermined lengths, of independently-operating feeding and cutting-off mechanism adapted to operate alternately, a circuit-closer adapted to close an electric cirn cuit when the metal has been fed a predetermined distance and instantly bring the feeding` mechanism to a standstill, mechanism for bringing the cutter into operation to sever a section from such metal, and mechanism for restarting the feed-rolls, for the purpose set forth. A

3. In an automatic machine for alternately feeding and cutting ol't sections from a metal strip or rod, of feeding-rolls and cutting-off mechanism, a circuit-closer adapted to close an electric circuit when the metal has been :fed a predetermined distance and instantly bring the feedrolls to a standstill, mechanism for bringing the cutter into operation to sever a section from such metal, a deliverytable over which such metal is fed, said table adapted to deliver such severed section, means for restarting the feed-rolls, for the purpose set forth.

Ll. ln an automatic machine for alternately feeding and cutting off sections from a metal strip or rod, of feeding-rolls and their operating mechanism, a cutter and its operating ceases mechanism, a delivery-table and its operateing mechanism, a system of electric Wires com nected with a source ol' electrical energy,` a circuit-closer adapted to'close the electric cir cuit when the metal has been fed a predetermined distance and instantly bring the l`eed rolls to a standstill, means for .instan tly bri nging the cutter into operation to sever a section therefrom, means for restarting the feeding-roll mechanism so as to feed forward another section, for the purpose set forth.

5. ln an automatic machine foralternate'ly feeding and cutting off sections from the cud of a metal strip or rod, of feeding-rolls and their operating mechanism, a cutter and `its operating mechanism, a delivery-table and its operating mechanism, a system of electric Wires connected with a battery or other source of electrical energy, a circuit-closer adapted to be engaged by the end of the metal strip or rod and close the electrical circuit and bring the feed-rolls to a standstill, means for bringing the cutter into operation to sever a section from such strip or rod, means for resetting and restarting said feed-rolls se as to feed Aforward another section, for the purpose set forth.

t5. In an automatic machine'for alternately feeding and cutting oil. sections from the end of a metal strip or rod, of feeding-rolls and their voperating mechanism, a cutter and its operating mechanism, a delivery-table and its operating mechanism, a system of Wires cennected with a source of electrical energy, fnlcrumed levers pivotally and adjustably conr nected together, the end of one of said levers adapted to engage with a cam on the cutter driving shaft, the other lever adapted to engage with means connected with an electric latch or other like device, means, substan tially as shown, for connecting one of saiil levers with the feed-roll-driving mechanism, a circuitcloser adapted 'to close the circuit when the metal has been fed a predeternlined distance and thereby release the levers held by the said .latch and bring the fcedrolls `to a standstill, and means for releasing the cutting-off mechanism to sever a section from the metal strip, and means for stopping said cutting-off mechanism and restarting the feed-rolls, for the purpose set forth.

7. ln an automatic machine for alternately feeding a metal strip or rod and cutting ell sections therefrom, of feeding-rolls and their operating mechanism, a cutter and its operative mechanism, a delivery-table and its operative mechanism, shipping mechanism for alternately bringing the feecling1'olls and cutting-off mechanism into operation, combined with a system of wires connected with a battery or other source of electrical energy, a circuit-closer adapted to close the circuit when the metal strip or rod has been 'fed a predetermined distance and stop the feedrolls through the medium of the said shipping mechanism and bring the cutter inte operation, said shipping mechanism adapted te re IOS driving-Gear a inion-Oear to register Wit-h b D 9 CJ D one of the feed-roll gears, a shipping-rod passing through said shaft and connected with the shipping mechanism-one end of said rod adapted to engage the said clutch-face of the loose driving-gear, a spring-buffer on such rod, for the purpose set forth.

9. The combination, in a two-part table, of a feeding and cutting-off machine for sheetmetal, of longitudinal narrow strips or rods attached to the upper surface of such table to reduce the friction of the metal sheets, and a trip-plate Whose lower edge is shaped to coliform to such strips, so that very thin metal sheets may be fed Without getting between tlie lower edge of such trip-plate and said strips, substantially as set forth.

Signed at Bridgeport, in the county of Fairiield and State of Connecticut, this 20th day of May, A. D. 1897.

' FRANKLIN B. SHUSTER.

Witnesses:

FREDERICK A. BoorH, l J oHN-B. CLAPP.