US57832A

US57832A - Improvement in coating sheet-iron with tin and other metals

Info

Publication number: US57832A
Authority: US
Publication date: 1866-09-04
Anticipated expiration: 1883-09-04

Description

2 Sheets-Sheet 1.

E. MOREWOOD.

Coating Sheet Iron with Ti'n and other Metals.

Patented Sept. 4, 1866.

N. rzrsyvs. mwum n w. wmm um n c 2 Sheets-Sheet 2. E. MOREWOOD.

Coating Sheet Iron with Tin and other Metals. No. 57,832. Patented Sept. 4,1866.

JANE/W? aid 4mm W/TA/ES s 5 if; WW

UNITED STATES PATENT OFFroE.

EDMUND MOREWOOD, OF LONDON, ENGLAND.

IMPROVEMENT IN COATING SHEET-IRON WITH TIN AND OTHER METALS.

Specification forming part of Letters Patent No. 57,832, dated September 4, 1866.

To allwhom it may concern:

Be it known that I, EDMUND MoREwooD, of Stratford, in London, England, have invented and made a certain new and useful Improvement in Coating Sheets or Pieces of Metal with Tim, Zinc, orother Metals or Alloys; and Ido hereby declare the following to be afull, clear, and exact description of my said invention, reference being had to the annexed drawings, making part of this specification, wherein- Figure 1 is a vertical longitudinal section of my improved bath or coating apparatus. Fig. 2 is an elevation of the withdrawing-rollers. Fig. 3 is a side view. Fig. 4 is an edge view of the rubbing or wiping surfaces between which the sheet of metal is passed. Figs. 5 and 6 are vertical sections of modifications in the coating apparatus.

Similar marks of reference denote the same parts.

My invention relates to an apparatus placed in the bath of coating-metal to receive the sheets or pieces of metal at one place, and convey them automatically and deliver them upward by a pair of withdrawing-rollers. By this apparatus the sheets of metal can be al lowed to remain in the bath of coating-metal the required length of time to loose the flux through which they entered, and they are delivered at a point where there are less injurious and undesirable matters in the bath than wherethe sheets are introduced.

In the drawings, W is a bath of coatingmetal, heated in any desired or convenient manner. 0 is a carriage within said bath, connected at I with the chain or belt I to the pulleys K, and to said pulleys K motion is given by any suitable mechanism, so that the carriage O can be drawn back and forth within the bath. B is a tube or slide, of a size and shape adapted to the reception of the sheet or piece of metal to be coated. At the bottom of this slide B is a latch, B, that is withdrawn by a latch, O, on said carriage O, to allow the sheet A to pass down into a receptacle or rack in O. There is a weight, 0 to each of the latches C, so that the latches will turn and not operate when the carriage is going in one direction, but they will act upon B in going the other way. Around the lower end of the slide B is a casing or receptacle, D, for

flux, that confines said flux to that part of the surface of the coating-metal.

As the carriage G passes in one direction the sheets of metal A are deposited successively in the receptacles or racks (J, provided I for them, and if desired may remain until the carriage has been drawn back and forth in the bath ofi'nel'ted coatingmetal; or said sheets or pieces of metal in aybe withdrawn (immediately on arriving below delivery-rollers F F) bymeans of a pair of hooks, D, actuated by cranks E, said hooks 1) being so placed as to take one on each side of the sheet and raise them successively to rollers F F, that withdraw the sheets. As the sheet of metal is raised it may pass between guides G and rubbing-surfaces G, that may be made as shown in Figs. 3 and 4, and. act to smooth or lessen or reduce the coating-metal and improve the surface of the sheet of metal.

The rollers F F are within a casing or bath, L, of flux, heated by hot air passing through tubes L, and clean pure metal may be supplied Within said casing and remain upon the coating-metal in the bath XV, to'give to the sheet or piece of metal a surface-coating of better metal than that in said bath WV.

In cases where it is desired to deliver the sheets from the bath WV without passing them through the wipers or rubbers G, they may be drawn outby any competent means; but the sheets will require a second operation for equalizing and improving the surface. For

this purpose I employ the apparatus shown in Fig. 5, or that shown in Fig. 6.

The sheets of metal A, having been coated with tin or terne metal, are dropped into the feeding tube or passage B, Fig. 5, and released by the catch B being withdrawn by the arm 0 of the rack (J. The rack O with the plates A are then caused to move immediately under the withdrawing-rollers F F.

On either end of the rack C, but within the bath \V, is a bar or frame acted upon by a connecting-rod to the crank E, as shown. These bars or frames rise up and carry with them the plate out of the rack 0, so as to cause the upper end of the plate to enter into the nip of the withdrawing'rollers F, by which the plate is withdrawn. T/Vhile one division of the rack has been thus emptied the other division 'nected by each arm, 0.

thereof has received a plate from the other feeding tube or passage, and the empty division is caused to pass away to receive a fresh plate from its feeding-tube, and the one containing a plate will by the same movement bebronghtunderthe withdrawing-rollers. This lateral or horizontal movement of the rack is obtained by means of the crank and connecting-rod O and l, or it may be accomplished by other suitable mechanism; or, in place of causing the plates to rise out of the rack, they may be raised to the nip of the withdrawingrollers by means of a lever and cam.

In Fig. 6 I have represented the feed-tube B, latch B, and delivery-rollers F F in combination with a revolving plate-receiver, 0, moved progressively by the hook H and (rank 1 acting upon the teeth around the hub of said plate-receiver. The latch B is discon- As it comes around. the plate A passes down into the holder G" in the bath WV.

D are arms on a shaft, H, with an arm, E to the cams D As a recess in the cam D comes around a spring acting upon the arm E causes the plate A to be raised sufficiently to be delivered by the rollers F.

It will be understood that the baths W are to contain oil, grease, or other flux, ator about the temperature of the melted coating-metal, and that the rollers F are to be kept well coated with melted coating-metal, so as to equalize and improve the coating upon the plate of metal as it is withdrawn. If desired, a coating of metal of a better quality than that first applied to the metal plate may be added by the apparatus shown in Figs. 5 and 6, either by introducing said metal in the bath \V, or supplying it above the nip of the withdrawing-rollers.

In Fig. 7 I have shown a modification of my said apparatus, in which the receptacle 0 is hung upon a shaft at the bottom, set in slides (J and by the cranks L, connecting-rods M, and cam-slots K, the receptacle 0 is moved from below the slide to a vertical position, and raised up so as to deliver-its plate to the withdrawing-rollers F F. I have shown in this Fi 7 two pairs of these withdrawingrollers and two receptacles, G, working as aforesaid.

The rollers F are to be fitted as shown in Fig. 2, so that one of them may yield to varying thicknesses in the sheet or piece of metal.

a is the axis of the roller, and b b rollers surrounding or on three sides of the axis. Said rollers I) b are covered with elastic material, in order that the axis a and the roller F may be allowed to yield.

What I claim, and desire to secure by Letters Patent, is

l. The slide B, to receive the sheet or piece of metal, to be coated, in combination with a receptacle, 0, within the bath of coatingmetal, to convey said sheet or piece of metal. to the point of delivery, substantially as specified.

2. The delivery-rollers F, in combination with the receptacle 0 and an elevating apparatus to raise the sheets or pieces of metal to the delivery rollers F, substantially as set forth.

3. Wipers or rubbers G, in combination with delivery-rollers F, to act upon the coating-metal previous to the delivery of the sheet or piece of coated metal, for the purposes and as specified.

4. A slide or receptacle in a bath of melted coating-metal to receive the sheets or pieces of metal at one place and convey them to a difi'erent place in said bath, where said sheets or pieces are delivered upward automatically from said bath, as set forth.

5. In combination with an apparatus for coating sheets or pieces of metal, substantially as described, a pair of deliveryrollers, one of which is set in yielding bearings, so as to provide for varying thicknesses of the sheets or of the coating, as set forth.

In witness whereof I have hereunto set my signature this 16th day of March, A. D. 1866.

EDMUND MOREWVOOD.

Witnesses (J. Tnonoweoon,

24 Royal Exchange, London. M. WYNN,

2* Royal Exchange, London.