US247582A - Bronzing-machine - Google Patents

Description

(No Model.)

' 2 Sheets-Sheet 1. J. F. SARGENT.

BRONZING MACHINE.

Patented Sept. 27, 1881.

Inventor f/ %WM n1 D. (L

(No Model.) 2 Sheets-Sheet 2.

J. P. SARGENT.

BRONZING MACHINE.

No. 247,582. Patented Sept. 27,1881,

M/z'in eacs e5, Invent 01 div/7 M P N. PETERS. Pmmumo m hnr, Watllmglnn. 0.1:.

UNITED STATES PATENT OFFICE.

JOSEPH F. SARGENT, OF WORCESTER, MASSACHUSETTS.

BRONZlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 247,582, dated September 27, 1881.

Application filed July 15, 1881.

To all whom it may concern:

Be it known that I, J osEPH F. SARGENT,0f Worcester, in the countyof Worcester and State of Massachusetts, have invented certain new and useful Improvements in Bronzing- Machines andI declare the following to be a description of my said invention sufficiently full, clear, and exact to enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a partof this specification.

This invention relates to certain improvements in the construction of machines for applying bronze or other fine powderv to the surface of printed cards or sheets of paper and forsimilarpurposes,theobject ofmysaidinvention being to provide an efficient and practical mechanism adapted for use on small or large sheets without requiring special adjustment for the particular sheets to be operated upon; also, to afford convenient facilities for taking up the surplus bronze-powder; also, to perfect and simplify the operative mechanism, and to furnish devices for feeding'and distributing the bronze in a thorough and economic manner. I attain these objects bymechanism constructed and organized for operation as shown in the accompanying drawings and herein described, the particular subject matter claimed being hereinafter definitely specified.

In the drawings, Figure 1 represents a plan view of my improved bronzing-machine, the top casing being shown in section. Fig. 2 is a longitudinal vertical section at the position indicated by line as w on Fig. 1. Fig. 3 is a vertical sectional view of the feeding devices for applying the bronze to the printed sheets, drawn to a larger scale. Fig. 4 is an end view of the machine, showing the gears, and with dotted lines showing the positions of bands at the opposite end of the machine for operating the several rolls and brushes. Fig. 5is avertical section on a larger scale, showing details of constrnctionof one of the brushing devices. Fig. 6 is a longitudinal Vertical section of one of the brush devices at the position indicated by line 51 g on Fig. 5, andFig. 7 is a bottom View of one of the brushing devices.

In the construction, A denotes the frame or casing for supporting the operating parts. B

13, upon which it'rolls.

(No model.)

indicates the endless carrier or cylinderon which the cards or sheets are supported and carried forward in the machine while undergoing the bronzing operation. E is thefeedtable, and D the delivery or flyi table whereon the sheets are deposited when finished.

F indicates the feed-hopper in which the supply of bronze is placed. The sides of said hopper are hinged at or neartheir upper corners,as at f, and are connected by bolts F,

having thumb-nuts, so that said sides can be in Fig. 3, with a slow movement, by belt from v the cylinder-shaft, or otherwise.

The end supports, F, of the hopper F and roll F are made tapering downward, and are fitted to corresponding recesses in the frame A, so that the parts can be readily removed from the machine when desired, first raising thecover a, which closes down upon the top of the hopper and ends F in the manner illus trated. After removing the hopper and delivery-roll F the distributing-roll G can be taken up from position, as the end pieces, F are made to form or to rest upon the bearingcaps of its journals. 1 I

The distribu'tin g-roll G has a surface of chamois leather, or other soft material of similar nature, and is arranged to have surface movement corresponding to the carrier or cylinder It is driven by gear G, which meshes with the cylinder-gear B.-

The contact-surfaces of the rolls F and G move at different speeds, causing the bronze to be transferred to and spread upon the roll G in an even manner and all small bunches or lumps of bronze crushed and leveled on the surface of said roll.

For'retaining the sheets upon the carrier I employ two or more series of strings or carrierbands, H and K, said strings being arranged in close series or about one-half inch (more or 1ess)apart, and extending around the respective brushes I and J, with suitable guiding-rolls,

and brushing devices can be employed, if desired, each constructed and arranged in relation to the last, substantially as those herein shown, the diameter of the cylinder 13 being proportioned to meet the requirements of the same.

The guiding-rolls m m are covered with a soft orelastic material, and are given movement to correspond with the movement of the carrier-surface, so that the strings H K and cylinder B act together for carrying forward the printed sheets beneath the cleaning and polishing brushes I J. The several strings being arranged near to each other enables the machine to operate as readily on a small card as on a broad sheet, so that work of all sizes within the maximum limit can be run through the machine without regard to the order of feeding, in the several sizes.

The guide-rolls m andm may be geared to the cylinder in the manner shown, or otherwise operated at the proper speed.

The brushes I and J may be formed of goathair or similar suitable material, and said brushes are mounted in cases or drawers 1 J, which are provided with a central opening, through which the brush works, and with receptacles or side grooves, 8, into which the sur plus bronze taken up by the brushes is deposited.

A bar, 1', is arranged within the case for freeing the brush from bronze by contact with the ends of the hairs or bristles. The cases completely inclose the brushing devices, and they are supported in the frame A in such manner that they can readily be withdrawn from the machine and the deposited bronze removed through suitable opening, Z, in their ends, when desired.

The brushes are revolved at high speed in the direction indicated by'arrows, Figs. 2 and 5, by means of bands from the pulley M of the driving-shaft M, as shown in Fig. l and by dotted lines, Fig. 4'.

The journal-boxes of the brushes and guiding-rolls may be made adjustable, so that the parts can be properly set in relation to the surface of the carrier or cylinder, and the bars i may be arranged to adjust toward or from the brushes, as desired.

The distributing-roll G and feed devices may also be made adjustable toward or from the cylinder, and adjustable partitions may be used in the feed-hopper when it is desired to spread the bronze only part the width of the machine.

A brush, N, may be arranged at the lower part of the frame for cleaning the surface of the cylinder B. The cylinder B is operated by a pinion on the driving-shaft M, which meshes with the gear B on the cylinder-shaft.

The frame A is inclosed to retain the dust, and has a draw, A, in the lower part and a hinged cover, A at the top. The upper portion of the frame, which supports the several rolls and brush devices, is hinged to the lower portion, as at a so that said upper portion can be turned back for opening the machine along the surface of the carrier, or along the line traversed by the sheets on their way through the machine. Hence if anything interferes with the progress of the sheet it can readily be removed from the machine by sim ply throwing off the bands which drive the brushes and raising the upper portion of the frame and mechanism supported thereby.

In the operation of the machine the cards or sheets previously printed with the proper sizing in the ordinary manner are fed into the machine from the table E between the surfaces of the endless carrier or cylinder B and the roll G, which latter acts as a feed-roll, and also transfers a coating of bronze to the surface of the sheets. The sheet then passes beneath the first brush, which removes the surplus bronze, except such as may be held under the strings or bands H, and possibly a small amount that escapes the brush.

It then passes under the second brush, J, (the cords K occupying spaces cleaned by the first brush,) and said second brush removes the bronze that was retained by the cords or bands H, or any remaining on the unsized surface of the sheet. The sheet is then released from the cylinder and directed to fall on the fly-board D by the guide (I.

The brush N may not be required with ordinary thin paper; but when runningthick cards a little bronze may find lodgment on the cylinder along the edges of the cards, as the brushes cannot work into the small angle sufficiently close to perfectly clear it. In this case the lower brush, N, is useful to keep the surface of the carrier perfectly clean.

The machine can be quickly cleaned up by removing the hopper F and roll G, and then starting the machine.

If it is desired to give the work an extra polishing, it can be run through after the roll G is removed.

This machine is simple and quick in its action, is neat and convenient for use, and will operate on very small cards with the same facility as with large sheets. The bronze is not subjected to agitation, and but little bronze is put onto the sheets except such as adheres to the sized surface, and the consequent amount of dust set in motion is comparatively slight. Hence it works with great economy in the use IIS - with an endless carrier or cylinder, of two or v of bronze, while the brushes can readily be removed for relieving them and their cases from the bronze-powder collected therein.

If desired, two distributing-rolls, G, may be employed, both working in contact with the roll F or with each other and with the cylinder B; also, if desired, an endless belt could be employed in lieu of the cylinder. I prefer, however,the construction shown and described.

In practice the frame A may be made with an exterior skeleton of metal for supporting thejournal-bearing, and with a separate inside lining or casing of sheet metal or other suitable material for forming the inclosingcase to retain the dust; or, if preferred, the

sides may be cast whole, and the top, front,

and rear be put on in the manner of lagging, or otherwise.

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

1. In a bronzing-machine, the combination,

more series of strings or sheet-retainin g bands arranged at short intervals apart across the surface of said carrier, with the bands or strings of one series located to Work at positions intermediate to those of the other series, substantially as hereinbei'ore set forth.

2. The combination, with the cylinder or carrier B, of the brushes I and J, the sheet-retaining strings H- and K, arranged in interacting series, and the string guiding-rolls m, m, and. n, substantially as and for the purposes set 3. The combination, with the frame A and carrier B, of the revolving brushes separately mounted in inclosing-cases, which are adapted for removal from the frame, in the manner described.

4. The drawer-cases I J, for containing and supporting the revoluble brushes, constructed with the central bottom opening, side receptacles or grooves, s, and clearing-bars i, as described, in combination with the frame and sheet-carrying mechanism in a bronzing -machine, substantially as and for the purposes set forth;

5. The removable end supports, F carrying the feed-hopper F and delivering-roll F in combination with the distributing-roll G and frame A, substantially as described.

6. The inclosed frame A, constructed substantially as shown and described, with its upper portion, which supports the feeding and brushing mechanisms, hinged, as at M, to its lower portion, in which is mounted the carriercylinder B, for the purpose set forth.

7. The combination of the cylinder B, provided with gear B, the driving-shaft M, having pinion and belt-wheel M, the brushes IJ, the bronze-feediu g rolls F and G, and the string guiding-rolls m m, with their several operating gears and belts, arranged in the manner substantially as shown and described.

Witness my hand this 9th day of July, A. D. 1881.

JOSEPH F. SARGENT.

Witnesses:

OHAs. H. BURLEIGH, GEO. M. REED.

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