US653952A - Bronzing-machine. - Google Patents

Description

No. 653,952. Pa tented luly l7, I900. A. J. FOBD. BBUNZING MACHINE.

(Appl t man 7 1899) 4 Sheets-Sheat I.

(No Model.)

WITNESSES 45M A TTOHNE rs No. 653,952. Patented July I7, I900.

A. J. roan.

BRDNZING MACHINE.

(Application filed Nov. 7, 1899.)

(No Model.) 4 Sheets-Sheet 2.

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No. 653.952. Patented July 17,1900. A. J. FORD.

BBONZING MACHINE.

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No. 653,952. Patented July 17, 1900.

A. J. FORD.

BRUNZING MACHINE.

(Application filed Nov. 7, 1899.) (No Mo el.) 4 Sheais Sheet 4.

A 770m Y8 Nrrm) STATES PATENT OFFICE.

AL BERT J. FORD, OF NEW YORK, N.. Y., ASSIGNOR TO THE FUCHS & LANG- MANUFAOTURING COMPANY, OF SAME PLACE.

BRONZINGPMACHINEE.

SPECIFICATION forming part of Letters Patent No. 653,952, dated July 1'7, 1900. Application filed November 7, 1899:. Serial No. 736,093- (No model.)

To aZZ whom it may concern.-

Be it known that I, ALBERT J. FORD, a citi zen of the United States, residing in the city of New York, borough of Brooklyn, and State of New York, have invented certain new and useful Improvements in Bronzing-Machines, of which the following is a specification.

This invention relates to certain improvements in bronzing-m achines for bronzing lith ographs and other sheet articles by which the bronze-powder is uniformly distributed over the parts to be bronzed, thoroughly rubbed in, and the surplus removed from the unbronzed or bronzed parts.

The invention consists of a bronzing-machine which comprises a bronze-hopper, a distributing-roller below the same, means for feeding the sheet or plate forward, a rubbingbrush adjacent to said distributing-roller, a frame for supporting said brush, means for imparting a gyratory motion to said brush, said means comprising vertical shafts journaled in said frame and provided with eccentric portions journaled in bearings of the brush-back, a transverse shaft journaled in bearings of said frame, bevel gearing connecting the transverse and vertical shafts, means for rotating said transverse shaft, and dusting means beyond the rubbing-brush.

In the accompanying drawings, Figure 1 represents a side elevation of my improved bronzing-machine. Fig. 2 is a vertical longitudinal section of the same drawn on a larger scale. Fig. 3 is a plan view of the machine; and Fig. 4C is a detail vertical transverse section, drawn on a larger scale, on line 4 4, Fig. 2, parts being in elevation and showing the rubbing-brush.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the supporting-frame of my improved bronzingmachine for lithographs, 850. At the ingoing end of the machine is arranged an inclined feed-table B, formed of a number of parallel longitudinal slats b, on which the lithographic sheets, plates, signs, or other sheet articles to be bronzed are placed. Parallel with the inclined feed-table Bis arranged a reciprocating rod 0, which is guided in a suitable keeper (Z at the under side of the tashank on the reciprocating rod C, so that one ating parts of the bronzing-machine.

ble, said rod being connected with the shank e of a pusher D, which is reciprocated upon the feed-table and which is adjusted by its sheet after the other may be fed to the oper- The reciprocating pusher-operating rod 0 is connected by a short pivot-link c with a leverarm 0, which is fulcrumed to a transverse 6o The lever-arm O is connected above its fulcrum with a slotted connectingrod 0 which is guided byits slotted portion upon the driving-shaft S and provided with an antifriction-roller 7, that moves along a cam r on the driving-shaft S. The cam 1" is so shaped that an oscillating motion is imparted to the lever-arm C, so as to reciprocate the rod O of the pusher D to the required extent.

At the middle portion of the supportingframe of the machine is arranged a bronzehopper E, of the usual construction, which is supplied with bronze-powder, said powder being transmitted by a distributing-roller E, covered with plush or other suitable soft material, to the paper sheets or signs or tin or other metal plates that are moved over the feed-table by 'the pusher D. Intermittent or step-by-step rotary motion is imparted to the distributing-roller E by a cam and suitable transmitting mechanism from the drivingshaft S, as shown in dotted lines in Fig. 2, preferably by a ratchet-and-pawl device M, which is operated by a pivoted lever M and actuating-cam M Adjacent to the bronze-hopper E and its distributing-roller E is arranged a rubbingbrush F,which consists of two parallel brushes ff, which are attached to a suitable back f. A frame F is supported on brackets f of the side standards of the machine and is adjusted by means of set-screws f relatively to the surface to be bronzed. A gyrating motion is imparted to the rubbing-brushes f by a transverse shaft j, that is driven by a belt-andpulley transmission N N N and a gearwlieel-and-pinion transmission P P from the driving-shaft S. The shaft f transmits rotary motion by bevel-gears f f to short vertical shafts f which turn in bearings f of the frame F. The shafts f. are connected by eccentric shafts f with bearings f on the 'brush-back f, so that a gyrating motion is imparted to the same and the brushes, and thereby a rubbing action exerted on the bronzed surfaces. By the rubbing action of the brushes the bronze-powder is uniformly rubbed over the sized portions of the surfaces of the sheets and incorporated with the same. The sheet or plate is then conducted from the rubbing-brush forwardly between a series of feed-rolls G and over stationary tables g, between said feed-rolls, and is acted upon by a number of so-called dusting-rolls H, which are formed of suitable material and which remove the bronze-powder from the unsized portions of the surfaces. The feedrolls G are all turned in the same direction by means of a series of intermeshing pinion and gear wheels 0 O 0 while the dustingrolls H receive rotary motion in opposite direction thereto by means of a belt-and-pulley transmission T T, an auxiliary shaft S, to which rotary motion is transmitted from the intermediate shaft S and gear-wheels V and pinion V, as shown in Fig. 1. The transmitting gear-wheels 0 turn loosely on the shafts of the dusting-rolls H, so as not to afiect the latter. The shafts of the dusting-rolls H are supported in journal-beariu gs H which are capable of adjustment, so that the dustin -rolls can be accurately adjusted to the sheets or plates to be bronzed. The first two dusting-rolls receive direct rotary motion by a belt-and-pulley transmission from the auxiliary shaft S at one side of the machine, as shown in Fig. 1, while the remaining dusting-rolls are rotated by a beltand-pulley transmission at'the other side of the machine, but from the same auxiliary shaft. Below the last dusting-roll is arranged a second dusting-roll H, which removes any powder that may have passed to the under side of the sheet. The dusting-rolls are inclosed by a suitable sheet-metal casing I, which is hinged at its outer end at i to the end of the supporting-frame A and which is lifted into upright-position by means of a chain W whenever it is desired to obtain access to the dusting-rolls for adjusting, cleaning, or repairing the same. To the inside of the casing I are applied partitions I, that extend downwardly over the dusting-rolls, so as to prevent the bronze-powder from being passed over to the adjacent preceding dusting-roll or feed-rollers. The casing is provided at its outgoing end with an inclined wall 1 that extends toward the last set of feed-ro1ls,'as shown in Fig. 2.

The bronze-hopper, with its distributingbrush, as well as the feed-rollers and dustingrolls, are well known and I do not claim the same; but I do claim the rubbing-brush adjacent to the distributing brush and the mechanism for imparting gyrating motion thereto and by which the bronze-powder is rubbed into the sized portion of the surfaces of the sheets or plates to be printed,

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a bronzing-machine, the combination,

with the bronze-hopperand distributing roller below the same, of means for feeding the sheet or plate forward, a rubbing-brush adjacent to said distributing-roller, a frame for supporting said brush, means for imparting- ALBERT J. FORD.

Witnesses:

PAUL GOEPEL, M. H. WURTZEL.

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