US769978A - Wood-graining machine. - Google Patents

Description

No. 769,978. PATENTED SEPT. 13, 1904. B. W. AUGUSTINE.

WOOD GRAINING MACHINE.

APPLICATION FILED MAR. 10. 1903.

N0 MODEL.

z INVENTOR.

UNITED STATES Patented September 13, 1904.

PATENT Orrrcn.

WOdD-GRAINING MACHINE.

SPECIFICATION forming part of Letters Patent No. 769,978, dated September 13, 1904.

Application filed March 10, 1903.

To all whont it may concern.-

Be it known that I, BERNARD W. AUGUSTINE, a citizen of the United States, residing at 1000 Pacific avenue, in the city of Alameda, county of Alameda, and State of California, have invented certain new and useful Improvements in Wood-Graining Machines; andIdohereby declare the following to be a full, clear, and exact description of the said invention, such as will enable others skilled in the art to which it most nearly appertains to make, use, and practice the same.

This invention relates to improvements in wood-graining machines; and it consists of the novel construction and combination of the parts.

The object of this invention is to facilitate the taking of impressions of the grains of decorative woods and transferring the impressions upon the surface of baser woods, tin, or any affinitive surface. Heretofore this process has consisted in flooding the surface of a dressed board of the grain to be imitated with" a sizing of the desired color, then scraping off the surplus, leaving the capillary interstices of the grain filled. The grain impression is obtained by passing a roller witha sensitive surface, such as gelatin or compounds thereof, over the surface of the grain-board. The sizing in the grain adhering to the surface of the resilient roller gives thereto a negative impression of the grain, which may in turn be transferred to any surface having an aflinity therefor. r

In accomplishing the objects of this invention the construction consists, broadly, in substituting for the flat grain-board a veneer glued to the periphery of a roller capable of rotation. The sizing being applied to the surface of the grain-roller by a feed-roll (of printers feed-roll material or the like) or a rotary brush partially submerged in the sizing contained in a pan below the surplus sizing is removed by a scraper held constantly against the rotating surface of the roller.

In the drawings, Figure l is a side elevation of a machine constructed in accordance with this invention. Fig. 2 is a plan view from above of the same. i

In detail the construction consists of the B driven by the pulley B Serial No. 147,176. (No model.)

grain-roller A, having the veneer A glued thereto and journaled in the boxes m on the supporting-frame X. To facilitate the ready removal and substitution of the roller A, it is provided with the sockets A A The former is provided with the slot A to engage the pin B through the stub end of the driving-shaft The roller A is supported on the opposite side by the stubshaft B engaging the socket A and fixed therein by the set-screw A". The pin B is controlled by the screw B threaded in the bracket B and swiveled in the end of the pin in such a manner that the pin B may be forced in and out of the socket A are readily changeable when it is desired to substitute dilferent grains to be imitated.

The sizing is contained in the pan B, situated below the grain-roller and which extends forward under the scraper to catch the drippage therefrom. The sizing is fed to the surface of the veneer A by the feed-roll C, partially submerged in the contents of the pan B and mounted between the arms G, pivoted at C on either side of the machine. The feed roll is held in yielding contact with the roller A by the contraction of the spring 0 on the opposite side of the fulcrum C The surplus sizing is removed by the scraper D, preferably of leather, set'at a tangent to the roller A and in a direction opposing the direction of the travel of the same, which prevents any sizing crowding under the scraper. The scraper is set in the backing D, which is bolted between the lower ends of the levers D fulcrumed at D on either side of the machine. The scraper is held to the surface of the veneer by the tension of the spring D*, which tension is controlled by the hand-wheel D", threaded on the rod D and operating behind the bracket D on the frame X. The scraper must not be permitted to rest against the veneer during the inoperativeness of the machine, the sizing sets leaving a mark on the veneer Where the scraper has adhered thereto. To readily throw the scraper into and out of operation, the levers D are provided with the pawls D", which seat in the notched quadrant D to lock the scraper in any desired position.

The operation of the machine is as follows:

Thus the rollers Prcsuming the pan to be filled with transfer liquid, it is obvious that the rotation of the roller A in contact with the feed-roll C will cause the latter to carry the liquid to the surface of the roller, from which the surplus will be scraped back into the pan by the scraper i D. The exposed surface of the roller A presents a constantly-primed surface to the transfer-rollers presented thereto. To facilitate the handling of the transfer-rollers E, the frame X is extended beyond the roller A. Upon this extension the handles E can rest. The transfer-roller E consists of adrum, upon the periphery of which the sensitive coating E is fixed, the gap E being left as a startingpoint in applying the roller to the veneer. After receiving the impression the roller E is passed over the surface to which the imitation grain is to be applied, leaving the impression thereon. After each transfer the roller E is cleaned in gasolene or a suitable solvent, which prepares its surface for a new negative.

For long strips of surface requiring a transfer-roller of large diameter and corresponding weight the frame X can be extended over the table upon which the surface to be imitated rests, thus avoiding the necessity of lifting the heavier rollers. The small rollers can be applied to the surface of the roller A at any desired point, oblique grains being 0btained by passing the roller obliquely across the grain-surface.

Having thus described this invention, What is claimed, and desired to be secured by Letters Patent, is

, 1. In a machine of the class described, the combination with a suitable frame, of a rotatable grain roller mounted thereon, a pan adapted to hold a printing liquid, yielding means for applying the liquid to said grainroller, means for removing the surplus liquid from the graihroller, means whereby said removing means is positively held out of contact therewith, and means for regulating the tension of said removing means.

2. In a machine of the class described, the combination with a suitable frame, of a rotatable grain-roller, a pan under said grainroller adapted to contain a printing liquid, a feed-roller held in yielding contact with said grain-roller, a scraper normally held in contact with said grain-roller, means for regulating the tension of said scraper on the grainroller, means for adjusting the last-named means, and independent means whereby the scraper is rendered inoperative.

3. In a machine of the class described, the combination with a suitable frame, of a grainroller rotatably mounted therein, a pan under said roller adapted to contain a printing liquid, afeed-roller adapted to supply said grain-roller with the liquid, a scraper adapted to remove the surplus liquid from said grain-roller, a spring connected to said scraper for holding it in yielding contact with said grain-roller, means for adjusting the tension of said spring, and means independent of said adjusting means for rendering said scraper'inoperative against the action of the spring.

4. In a machine of the class described, the combination with a grain-roller, means for supplying aprinting fluid to said grain-roller, means for scraping the surplus fluid from said roller, means whereby the tension of the scraping means against the roller is adjusted, and means independent of said tension means whereby the scraping means is positively held out of engagement with the roller.

5. In a machine of the class described, the combination with a suitable frame, journalboxes on said frame, and stub-shafts operating in said journal-boxes, of a grain-wheel, sockets mounted thereon, a bracket on said frame, and means operating in the bracket to hold the stub-shafts in engagement with the sockets.

*6. In a machine of the class described, the

combination with a suitable frame, journalboxes on said frame, and stub-shafts operating in said journal-boxes, of a grain-wheel, sockets mounted thereon, one of which is provided with a slot, a pin on one of said stubshafts adapted to engage said slot, and means engaging the end of the opposite stub-shaft whereby said pin is held in engagement with the slot.

In testimony whereof I have hereunto set my hand this 2d day of February, 1903.

BERNARD w. AUGUSTINE.

Witnesses:

BALDWIN VALE, V. BERKA.

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