US597778A - Tin plating and polishing machine - Google Patents

Description

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N. D. LEWIS. TIN PLATING AND POLISHING MACHINE.

No. 597,778. Patented Jan. 25, I898.

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N. D. LEWIS.

TIN PLATING AND POLISHING MACHINE.

No. 597,778. Patented Jan. 25, 1898.

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TIN PLATING AND POLISHING MACHINE. No. 597,778. Patented Jan. 25, 1898.

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UNITED STATES NATHANIEL D. LEWIS,

FETCH P TENT or 'JOLIET, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 597,778, dated January 25, 1898.

Application filed April 6, 1897. Serial No! 631,003. (No model.)

To (tZZ whom it may concern.-

Be it known that I, NATHANIEL D. LEWIS, a citizen of the United States of America, residing at Joliet, in the county of Will and State of Illinois, have invented certain new and useful Improvements in Tin Plating and Polishing Machines, of which the following is a specification, reference being had therein to the accompanying drawings, and the letters and figures of reference thereon, forming a part of this specification, and in which- Fignre 1 is a top plan of the apparatus, omitting the transfer-frame and its mechanism, above line H H of Figs. 4 and 5. Figs. 2 and'3 are enlarged views of the cam-and-lever mechanism for operating the rack located inthe pot for receiving the plates. Fig. 4 is a side elevation of the apparatus. Fig. 5 is a central longitudinal section of the apparatus. Fig. 6 is a vertical cross-sectional elevation of the apparatus, taken approximately on lines E E of Fig. 5, looking in the direction of the arrow and showing a cross-rack mechanism located to the left of said line. Fig. 7 is a detail view showing one end portion of one of the magnet carriers or conveyers, a portion being broken away to show its interior soft-iron core and wire coil surrounding said core, and showing its journal carried in an insulated box of one of the endless sprocketchains, and showing a spring-plunger of said journal in electric contact with a contactplate of the machine to make the electric circuit. Fig. 8 is a detail View showinga crosssection of one of the magnets and looking toward the lower part of one of the contactplates for engaging a spring-plunger in the journal of said magnet. View showing the side of one end of one of the magnets and showing its journal provided with a springplunger for contact with one of the contact-plates of the machine. Fig. 10 is a side view of a section of one of the endlesscarrier sprocket-chains, showing one of its insulated boxes; and Fig. 11 is a perspective view showing a portion of the lower part of the tinning-pot and showing the rack mechanism for receiving plates and the tilting mechanism for tilting forward plates to the gripping-rolls.

This invention relates to certain improve ments in an apparatus for automatically coat- Fig. 9 is a detail The object of this invention is to combine mechanism for use in the manufacture of tin and terne plates so that the operation of conveying the plates to the tinning-pot, of dipping the plates into the molten metal in said pot, of discharging them from said potand passing them through compression-rolls, of transferring them to a polishing device, and of polishing and finally discharging them from the apparatus becomes automatic, and so that the apparatus may be attended by unskilled labor, and thus cheapen ing the production of tin and terne plates.

. Referring to the drawings, 0 represents a pair of endless-sprocket-chain carriers for carrying the plates P to be tinned and mounted, respectively, on sprocket-wheels '7 and 8, secured, respectively, on shafts 5 and 6, the shaft 5 being jonrnaled in proper boxes on the upper ends of the standards 3, and the shaft 6 being journaled in proper boxes on the upper ends of the brackets 4, attachedto the side of the pct 12 for holding the molten tinning material. A pair of guide-tables 1 1 are located, one on either side of the said endlesschain carriers 9, and are secured on the crossbeams 2 2. Said tables are curved downward at their inner ends, as shown at 2', so as to extend down a distance into the pct 12 to form guides for the plate to be tinned. The shaft 6 has secured on it a pair of cam-wheels 68, located, respectively, one next the outer side of the boxes of said shaft, andhas also secured on ita pair of cam-wheels 69, one arranged next the inner side of the boxes of said shaft, as shown in Fig. l. The cam-wheels 68 respec tively bear upon their upper part the arms 22 through the medium of their wrist-rollers 70, as shown particularly in Figs. 1 and 2. The inner ends of said arms are pivotally connected to brackets 4 at one side of said cams, while their opposite or outer ends are connected to a rack 18, located in the tinningpot 12, as shown particularly in Figs. 1, 5, and 6, through the medium of the links 20 20. Rotation of the cams 68 will oscillate arms 22 and through their connection with said rack 18 will cause said rack to have V81" tical movement in the tinning-pot 12. A

similar pair of arms 23 23, arranged next the inner sides of the boxes of shaft 6 and piv.,

otally connected at their inner ends to the brackets 4, rest upon the upper part of the, cams 69, respectively, through the medium of their wrist-rollers 71, as shown particularly in Figs. 1 and 3. The outer ends of said arms 23 23 are respectively connected with the cranks 49 49 of a rock-shat t 47, located in the pct 12, as shown particularly in Figs. 1, 5,

and 6. Said rock-shaft is provided with a series of fingers 48. Rotation of the cams 69 will cause vibration of said fingers for the purpose of bearing against the side of a plate P to betinnedwhen it is resting in the car-. riage or rack 18, as shown in Fig. 5, to throw its upper partover, so when rack 18 moves upward the plate P will be'directed by a guide 17 to the train of grip-rolls 14.

The drive-shaft is shown at 58 and has secured on it the drive-pulley 62, a worm 59, and a gear-wheel 63, that meshes with gearwheel 64 on shaft 65 for, driving the polishing-wheels D. I

53, is a shaft for driving the gripping-rolls 1a through the medium of the train of gears 51, as shown particularly in Figs. 1 and 6.

Said shaft has secured on it the Worm-wheel 54 for meshing with worm 59 on shaft 58 and has also secured on its outer end the sprocketwheels and 56, the sprocket-wheel 56 being connected with a sprocket-wheel 11 on the outer extending end of shaft 6 and the sprocket wheel 55 being connected with sprocket-wheel 57 on the outer end of shaft 28, which drives the endless chains 29, 'carry ing the electromagnets 30.

14 are a set of gripping-rolls that receive the plate P as it is carried upward out of the pot 1.2 by the rack 18 and bring it into contact with one of the electromagnets 30, carried by the endless chains 29, which electromagnets attract the plates sufficiently to carry them over to the polishing devices. Said endless chains 29 are carried on sprocket-wheels 27, journaled on studs of transfer-frame 24, and on sprocket-wheels 27, secured on shaft 28, by which shaft said endless chains are driven. The electromagnets 30 are carried by said chains 29 and are constructed of metal tubes closed at each end by means of heads 34, having extending journals 31 fitting boXes in said chains. Said boxes are provided with bushings forming insulators 80, (shown in Figs. 7 and 10,) in which said journals 31 are boXedfor the purpose of insulating said journals from the said chains 29, said journals being screw-threaded on their inner endsso as to screw into an insulation-thimble 35, as shown in Fig. '7, so as to insulate them from the electromagnets 30. Said magnets are' provided with a central longitudinal soft-iron core 36, around which is placed a coil of wire the two ends of which are respectively connected through the medium of the insulated wires 37 with the magnetjournals, as shown in Figs. 7, 8, and 9. The journals 31 of said magnets 30 are bored out on their outer ends for a short distance for the reception of a spring-plunger 32, seated on a coil-spring 33, which plunger is intended to have contact with the insulated guide-frames 25, secured to the transfenframe 24: by means of insulatin'g-studs 39, assho'wn in Fig. '7. The coilsprings 33 springpress said plungers out against said guide-frame for the purpose of closing the electric circuit through said magnets 30 While said plungers are in contact with said guide-frame, and the said guide- ,frame is of suchform, as shown in Fig. 5, that said plungers are in contact therewith con stantly except when crossing the lower part of transfer-frame25. The lower ends of said guideframe 25 are respectively connected with the wire 40, which forms the line-wire leading to some source of electric supply. The plates P in their descent at the rear of the transfer-frame 24'engage a tilting guide 42 (shown in Fig. 5 and also in Fig. 1) for conducting theloweredge of the sheet into peripheral catches on the polishing-wheels D, which in their revolution pass the sheet through polishing material. The said polishing-wheels'and the polishing material being old, no further description of them is deemed necessary.

If desired, thepolishing devices may be omitted altogether, as the machine is operative for the purpose of tinning and transferring the plates to a table or any other kind of polishing devices, if necessary, so that the polishing devices are not really a part of this invention when it is not desired to polish the sheets.

The electromagnets 30, instead of being made of tubes, as shown, may be made of any other devices so they will perform the service shown. It is intended that said electromagnets shall not rotate" so as to drop the plate. 'Oneof theirjournals may be made of such formth'at it will not rotate. .The magnets 30 are magnetized by induction from the coil 38, which for'ins'a part of'the circuit.

In operation power is applied to the bandwheel 62 on shaft 58, which through its connection with the other shafts 65, 53, and 6 drives all the parts of the machine. The plates to be tinned and polished are first placed on the endless. carrier-chains 9 abut- 'ting their cross-bars 10 and so their sides lie upontlie tables 1, as shown in Fig. 1. They are carried forward over the downwardlycui-ved ends 2 of said tables until they drop into the rack 18 19, which at that time is intended to be above the position in which it is shown in Fig. 5 as far as the cam-andlever mechanism 20 22 68 will elevate it. Descent of said rack to the position shown in Fig. 1 causes the plate to be immersed in the tinning material in the pot 12, which pot is intended to have a furnace under it to melt the material in it. The lower edge of the plate P is intended to stand between and be said rack, While its upper end is intended to I be engaged. by the fingers 48 of rock-shaft e7 to throw it over, so when it is moved upward it will pass under the guide 17 and be conducted to the gripping-rolls 14, by means of which it is carried to the electromagnets and by them is carried over to be delivered to the polishing devices, as stated, and after going through the polishing process be delivered from the machine.

Having thus described my invention, what I claim as new, and desire to secure by Let ters Patent, is as follows, to wit:

1. In a machine for automatically coating tin and terne plates, the combination of an endless carrier for conducting the plate to the tinning-pot, the tinning-pot, a rack arranged within said pot and the means for operating said rack to immerse said plate in the tinning material and for delivering it to a train of grippingrolls, the oscillating fingers arranged in said pot above said rack and means for operating said fingers to tilt the plate forward, the train of gripping-rolls for receiving the plate from said rack, the electromagnet arranged to receive the plate from said rolls and consisting of the tube having a central soft-iron core surrounded by a Wire coil for intermittently magnetizing said magnet, the endless-chaincarriers for carrying said magnets, and the polishing devices all arranged to operate substantially as and for the purpose set forth.

2. In a machine for automatically coating tin and terne plates, the combination of the tinning devices, a carrier having a series of magnets arranged to successively come in contact With the plate or sheet and convey it to the point of delivery, and the means for demagnetizing said magnets to cause them to drop the plates substantially as and for purpose set forth.

3. In a machine for automatically coating tin and terne plates, the combination of the carrier having a series of magnets, for receiving the plate from the tinning-pot, the tinning-pot and its plate-delivering devices arranged forward of and in position to deliver plates to the magnets, the polishing devices arranged at the rear of said magnetcarrier andin position to receive plates therefrom, and the means for demagnetizing said magnets all arranged to operate substantially as and for the purpose set forth.

4. In a machine for automatically coating tin and terne plates, the combination of the endless carrier-chains 9 arranged to convey plates to the tinning-pot, guide-tables lhaving their inner ends curved downward into the pot and arranged With said carrier-chains between them, the tinning-pot 12, the reciprocating rack 18, 19 arranged in the lower part of said pot, the tilting rack 47, 48 arranged in said pot immediately above rack 18, 19, the means for operating said racks, the compression feed-rolls 14 arranged in the upper part of said pot above said racks, the guide 17 for guiding plates to said rolls, the carrier having a series of magnets 36, and the means for demagnetizing said magnets all arranged to operate substantially as and for the purpose set forth.

5. In a machine for automatically coating tin and terne plates the combination of the tinning-pot 12, the endless carrier-chains 9 arranged to deliver plates to said pot, shafts 5 and 6 for carrying said chains, cams 68 and 69 arranged on shaft 6, rack 18, 19 arranged in the lower part of said pot, arms 22 resting between their ends on cams 68, links 20 for connecting the outer free ends of said arms and said rack, arms 23 resting between their ends on cams 69, rock-shaft 47 arranged in said pot above rack 18, 19, and having fingers 4:8, and having cranks 49 links 21 for connecting the outer free end of arms 23 with said cranks .49 all arranged to operate substantially as and for the purpose set forth.

6. In amachine for coating tin and terne plates, the combination of the tinning-pot, the means for passing plates into and out of said pot, the carriers having a series of magnets arranged to receive the plates from the pot and conduct them to the point of delivery, and the means for demagnetizing said magnets, all arranged to operate substantially as and for the purpose set forth.

NATHANIEL D. LEWVIS.

Witnesses:

F. T. JENKINS, D. Tnnvon LEWIs.

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