US677678A - Machine for coloring or powdering lithographic or other transfer sheets. - Google Patents

Description

' Patemd luly 2.19m. H. MICHAUD. MACHINE FOR GULORING 0R POWDERING LITHOGRAPHIC 0R OTHER TRANSFER SHEETS.

(Application led Nov. 20, 1900.)

V(No Model.)

2 Sheds-Sheet I.

tu: uanms PETERS oo.. PHoTaLrmo.. wAsumoToN. D'. c,

No. 677,678. Patented July 2, |901.

H. MICHAUD.

MACHINE FR COLORING 0R POWDERING LITHGRAPHIC 0R UTHER TRANSFER SHEETS.

(Application ld Nov. 20, 1900.) (No Model.) 2 Sheets-Sheet 2.

'mt mams rmns co.. Pwmou'fno.. wAsHmaYon, u. cy

UNITED STATES' 4PATEINIT OFFICE HENRI MIOIIAUD, OE LIMOGES, FRANCE, AssIGNOR TO THE POTTERs DECORATIVE SUPPLY COMPANY, LIMITED, OE I-IANLEY, ENGLAND.

MACHINE FOR COLORING R POWDERING LITHOGRAPHIC OR O THER TRANSFER SHEETS.

SPECIFICATION forming part of Letters Patent N. 67 7,678, dated July 2, 1901. Application filed November 20,1900. Serial No. 37,126. (No model.)

To rtZZ whom it may concern,.-

Beit known that I, HENRI MIOHAUD,a citizen of France, residing at St. Lonard, Limoges, France, have invented a new and useful Machine for Coloring or Powdering Lithographie or other Transfer Sheets, of which the following is a full, clear, and exact descriptlion, and for which I have made application for patent in France on the 9th day of May, v1900, and Iny assignees have made applications for patents in Great Britain on the 18th day of October, 1900, and in Germany on the 29th day of October, 1900.

Chromo lithographie or other transfer sheets employed in the decoration of pottery are powdered by hand with the aid of brushes,

which have the grave inconvenience of diffusing in the atmosphere a powder which is dangerous for the health of the operatives. In order to obviate this inconvenience, on the one hand, and to effect a great industrial production, on the other hand, a machine having continuous action has been devised, which is constructed and operates in the following manner.

The invention is illustrated in the accompanying drawings, in which-2 Figure l is a side view,- and Fig. 2 is a plan, of the machine.

a is the machine-framing.

h is a wood cylinder which receives and draws forward the sheets of chromo-transfers. This cylinder is mounted in bearings a', carried by the machine-frame.

c c are endless tapes or bands which are carried by and caused torevolve around two rollers c o2, preferably of wood. These tapes or bands move at the same surface speed as that of the cylinderb. The sheets of chromotransfers are placed by hand on these tapes or bands and are fed by the latter to the cylinder b.

d is a wood table fixed within the space inclosed by the tapes or bands c c.

e e are a series of color-retaining brushes, the supports or backs of whichare mounted in fixed guides a2 and are capable of adjustment in the latter by means of screws e'.

ff are elastic rollers, preferably of gelatin, which are caused to press the transfersheets upon the cylinder b with elastic pressure obtained and regulated by means of springs f2 and nuts f3 acting upon their screw-threaded carriers.

gis a steel blade or doctor which bears against the roller f to collect the excess of color on the surface of said'roller.'

h is one of a number of springs, the free ends of which bear against the surface of the cylinderb 'and act to detach the transfersheets therefrom and cause them to pass into the box or receiver i.

j is a wood roller rotating in the same di rection as the cylinder b, but preferably at a slightly-greater surface speed than the latter. This roller ,7' receives the sheets immediately they are detached from the cylinder h and prevents them from buckling.

la is the main driving-shaft, which is fitted with fast and loose pulleys lo' k2 and a toothed wheel 7c3. This latter gears with a toothed Wheel Z, fixed on a counter-shaft Z, which by a toothed wheel Z3, gearing with a toothed wheel c3, gives motion to the roller c', and consequently to the tapes or bands c and roller c2. A toothed wheel Z2, fixed on the counter-shaft Z, gives motion to the cylinder b.

The machine operates in the following manner: The transfer-sheets are placed in succession on the tapes or bands c c in such Inanner that the first sheet covers the second v by a few centimeters, and so on. When the machine is in motion, the sheets are in succession drawn forward by the action of the gelatin rollers ff' acting by spring-pressure against the cylinder b. .The 'first brush e furnishes the mass of powder, and the succeeding brushes equalize it and retain the excess, the surplus being collected by the steel blade or doctor g. The gelatin rollers ff become impregnated with powder and fix it energetically on the drawings on the sheets to be powdered. The transfer-sheets are in succession detached from the cylinder Z7 by the springs h. Said sheets are then acted upon by the roller j to prevent buckling and are automatically delivered to the box or receiver i.

What I claim as my invention, and desire to secure by Letters Patent, :is-

1. In a machine for powdering transfer- ICO sheets, the combination of a rotating cylinder, a number of fixed brushes arranged across said cylinder to spread the powder on the sheets, a spring-pressed elastic rollerarranged intermediate of a pair of said brushes, and a spring-pressed elastic roller arranged beyond the last brush, such elastic rollers acting against the cylinder to draw forward the sheets and press the powder on the latter, substantially as set forth.

sheets, the combination of a rotating cylinder and spring-pressed elastic rollers-acting against such cylinder to draw forward the transfer-sheets, revolving endless tapes or bands passing around rollers to feed the trans;

Ifer-sheets tofthe cylinder, aseries of brushes tol apply and spread the` powder over such sheets, a steel blade or doctor to collect the excess of color on the surface of the last elastic roller, a series of springs acting against the cylinder to detach the sheets therefrom, a jroller to prevent the buckling of said sheets, and a box or receiver intowhich the sheets are automatically and continuously delivered,

:substantially as herein set forth. 2. In a machine for powdering transfer- In testimony whereof I affix my signature -in presence 'of two witnesses.

HENRIV MICHAUD. Witnesses IMBERTHABONNILLE, LEONET, Aa

Images