US122216A - Improvement in bronzing-machines - Google Patents

Description

4 Sheets--Sheet I.`

(54:) Y E. F. BENTON..

Improvement in Bronzing Machines.

Patented Dec. 26,1871.

4 Sheets--Sheet 2.

E. F. BENTON.

Improvement in Bronzing Machines.

Paten-ted Dec. 26, 1871.V

4 Sheets-Sheet 3;

E. F. BENTON.

Improvement in Bronzng Machines.

Patented Dec. 26, 1871.

W'aZzZ/Qqg ed 4 Sheets--Sheet 4.

E. F. BENTON.

AImprovement in Bronzing Machines.

Patje'nted Dec. 26, 18771'.

UNITED STATES EDWARD F. BENTON, OF BUFFALO, NEW YORK.

'IMPROVEMENT `IN BRONZING-MACHINES.

Specification forming part of Letters Patent No. 122,216, dated December 26, 1871.

To all whom it may concern:

Be it known that I, EDWARD F. BENToN, of Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Bronzin g=Machines5 andIdo hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawing making a part of this application.

My invention relates to that class of machines known as bronzing-machines, and has for its object to render the operation of bronzing complete in all its details, and to prevent the waste or flying about of the bronze material; and consists, rst, in the peculiar construction and operation of the hopper 5 second, in the combination and arrangement, with the bronzing-roller, of one or more (preferably four) distributing-rollers, op erating substantially as and for the purposes hereinafter to be described; third, in making the bronze-roller capable of being automatically or by hand thrown out of gear with the other moving parts of the machine and moved away from the cylinder, and it and the distributing-rollers and hopper-cylinder remain in a state of rest when desired, as will be presently explained, fourth, in the gripers, constructed substantially as described, in combination with the cylinder and releasing-lugs, as will be more fully set forth;

fifth, in the closing-sprin gs or their equivalent-s on the backs of the griper-arms, so constructed and operated as to close the arm-holes in the periphery of the cylinder to prevent thc escape into the interior thereof' of bronze; sixth, in the combination, with the polishing and cleaning-rollers, of brushes for freeing the same of the bronze they take up from the sheet seventh, in the com- I bination, with the polishing and cleaning-rollers or any brushes for freeing superfluous bronze, of a reel or comb, as will be more fully set forth 5 eighth, in combination with the first or upper polishing and cleaning-roller and freeing-brush, of a lower or auxiliary polishing and cleaning-roller and freeing-brush, to more perfectly eifect the certain and complete cleaning of the sheet, as will be more fully described; ninth, in the superfluous bronze receptacles, constructed as described, to eifectually .prevent any return of bronze to the cylinder or cleaning-rollers; tenth,

in providing a rubber seat for the griper-blade to close upon in order that any particle or hard substance `which might get under the nblade will be embedded therein and not prevent the lsaid blade from clasping the sheet;` eleventh, in the cover or covers, constructed and applied so as to prevent the escape into the room of any bronziug material, twelfth, in the general arrangement of all the parts, as will be fully set forth hereinafter.

To enable those skilled in the art to make and use my improved machine, I will proceed to describe the construction and operation ofthe same, referring by letters to the accompanying drawing, in which- Figure 1 is an end elevation of a bronzin'gmachine embracing my improvements. Fig. 2 is a similar view at the opposite end of the machine. Fig. 3 is a vertical cross-section at the lines :c w, Fig. 1. Fig. 4f is a longitudinal vertical section in detail, showing the construction of the hopper and its rel ation to the bronzing-roller and cylinder. Fig. 5 is avertical cross-section at the line yy, Fig. 4 5 and Fig. 6 is a detail view, showing the construction and operation of the gripers and the springs for closing the arm-holes in the cylinder.

Similar letters of reference denote like parts in the several gures.

A is the frame ofthe machine, so constructed as vto form the proper bearings for all the neces-` sary journals, and adapted to rest upon a table or the floor, according to size of machine, and so formed as to provide supports for the feedingtable B. The bronzing-rollerU vis hung in adjustable bearings in the upwardly-extended portion of the frame, and on one side of the frame (which is at that end of theroller that is driven by the friction-rollers) is pivoted a raising-lever, D, which is connected, by an arm, a, to the shaft of the bronze-roller C, so that depressing the handle of the lever will raise the roller out of gear and away from the cylinderl and stop its motion as well as that ofthe revolving bronze-cylinder E, with which it is connected by a belt, b, passing around cone. c on their respective shafts. To automatically raise" the bronzing-roller from the cylinder during the travel of that part of the same not covered by the sheet l provide a rais- Y ing-platform or rail on the outer edge of the cylinder, (which may be applied in any desirable manner,) and hang from the bronzing-roller shaft or box a leg, 8, provided with a caster-wheel, 9, which, running up onto the raising-platfbrm or rail, lifts the bronze-roller oii' from the cylinder and' out of gear. The object of the spring-bearings of the bronzing-roller is to admit of this operation as well as Varying the distance between the periphery of the bronze-roller and cylinder proper, F, when working sheets of greater or less thickness, in which case, should it be necessary to raise the bronzefroller to such extent as to throw it out of gear with its driving friction-pulley, au extra rubber orfriction-tire is sprung onto the bronze-roller pulley. To raise the roller for this purpose the lever is not used, but theV cylinder is rotated the cleaning-rollers, both the upper one, O, and the lower one, O', are rotated at the same speed (that is with reference to each other) and in a direction indicated by the arrows, which is the reverseof the line of motion of the cylinder F. The shafts of these cleaning-rollers are mounted in adjustable bearings, which are controlled by adjusting-screws e e, and for the same reason that the bronzing-roller is made adjustable and the teeth of the gears are necessarily made quite long to admit of this adjustment without destroying the action of one upon the other. Mounted in the frame A, and somewhat above the center of the cleaning-rollers O O', in similar adjustable bearings, are two cleaningbrushes, l? P', which are driven from the other end ofthe machine by means of a main gear, Q, meshing into two intermediate gears, Q', which, in turn, mesh with pinions R keyed to the shafts ofthe brushes P P'; and this train of gearing is so arranged with reference to speedas to drive the brushes much faster than the cleaning-rollers `O O'. Hung in arms/'is a reel, R', which is simply two disks joined by horizontal wires arranged in the arc and a central shaft, upon which there is a small pulley, which is run by a belt, g, passing around it, and a larger pulley, h, on the shaft ofthe brush. The reel is thereby rotated in a reverse direction to that ofthe brushes and at a faster speed, and is so located that the bristles of brush will overhang the wires slightly. It will thus be seen that the 'bronze taken ofi of the cleaning-rollers O O' by the brushes P P' is effectually illipped or knocked out of said brushes Vand deposited into the receptacles S S', which are a sort of drawer, of the shape illustrated in the drawing, turned up at the rear side and having two shields, l 2, shown in dotted lines, running th'e length of the drawer, and secured to the ends thereof'. This drawer is made of tin or other ysuitable sheet metal, and the bottom and shields run up near vto the periphery-of the cleaning'- brushes (leaving j ust room for them to pass without touching) to prevent the bronze which has beenl cleaned therefrom flying back onto -the cleaningrollers after it has been fillipped or roller O' and its attendant brush are merely auxiliary to remedy any possible defect in the-cleaning by the upper one, 0; and, as a small quantity (if any) of bronze is taken up by this roller, a simple comb,`z', may be arranged to clean this brush. Alarge gear-wheel on the outside of the frame is secured to the cylinder-shaft, said wheel being of equal diameter with said cylinder, and meshing into a gear-hub on the main shaft G. The proper motion and speed are thus imparted to the cylinder F. Meshin g into this same cylindergear is an intermediate gear, T, which meshes with a smaller one, T', on the shaft of one of two small drums, U, over which are passed several tapes, which form a skeleton apron for.

carrying off into a receptacle at the foot ofthe machine, seen at V, the finished sheets as they are automatically deposited thereon, as will be presently explained. At one or more proper' points o n the periphery of the cylinder F a groove is cut longitudinally of slight depth, and then lled up with rubber to form an elasticlbed for the edge of the griper-blade to close against. The griper isshown at W, Fig. l, as closed, and on a larger scale at Fig. 6 in an open and a closed position. This griper WV is composed of a'blade the samelengthtof the cylinder F, secured vto any desirable number of arms a: x which are passed from the interiorofthe cylinder through arm-holes y, and ysecured to the blade, when they are drawn back and -pivoted to the interior surface of they cylinder, forming a fulcrum, upon which the griper is moved. The rear or inner ends 4of these arms xm :vw are turned up at right angles, as seen at 3, and have a pierced ear, 4, into which one end of a spiral spring, Z, is secured, while the other end is fastened to a similar ear, 5, secured to the interior of the cyl- 'indergv the tendency, therefore, of this spring is tokeep the griper closed down upon its elastic bed or seat; and the object of making ,this bed of rubber is that should any particle or hard substance get under the grip'er-blade at any pointit will be, embedded in the rubber, and not prevent the griper from coming down and clasping the paper it is designed tohold. Running along, and y secured to these arms @back of their centers, is a stift'ening-rod, J, passing entirely through, and

having its ends turned at a right angle, -as seen' at 4(i, which part, coming in contact with lugs 7,

projecting from the frame of the machine and at' the proper points, opens the gripers. In the drawing I have represented these lugs so located as to open the griper, to permit a sheet to be fed underit f'rom the feed-table,-(after which it closes,) and to again open when the sheet has been nished to drop it on the skeleton apron for conveying it to a proper receptacle. The arm -holes g/ are necessarily elliptical, in order that the proper movement of the arms may be allowed; and were there no-means provided to prevent it, these` I holes, when the gripers are closed, would allow bronze to drop throughthe cylinder. Toobviate this difficulty, and avoid every possibility of escape of bronze in any manner whatever, I

arrange on the back of the griper-arms small flat springs t, curvedas shown, so th. t when the griper is closed they will effectually lill up or close the arm-hole back of the Vgripers and supply the break in the periphery of the cylinder; and .when the gripers open these springs will flatten up against the back of the arms and between them and the back edge ofthe arm-holes.

Having described the construction of the machine, beginning from the feed-table and traveling in the line which the sheet would take in being bronzed and cleaned back to the feed-table, I will now describe the construction of the hopper nand spreading-rollers. The hopper is composed of an outer case or box, 7c, converging at the bottom and leaving a narrow longitudinal slit or opening for the passage of the bronze, hung in the proper bearing. In the ends of this box or ease are the journals ofthe rotating' bronze, hollow cylinder E. This cylinder, which holds the bronze, is provided with a longitudinal door,

through which the bronze is received, and the said door is fastened in any convenient manner. Several rows of little holes, seen at l, Fig. 3, running from end to end of this cylinder, and parallel to the axis, are made in the face of the` same, which are designed to drop the bronze as 4 each successive row o f holes arrives in a vertical line over the bronze-roller, and the speed of this bronze-cylinder, and consequently the amount of bronze dropped in a given time is `regulated by a cone-pulley on the shaft and run by the belt c, as heretofore explained. Oneor more slides are arranged within the hopper to regulate the flow of bronze according to the width of sheet. Arranged around the periphery of the bronzingroller C are four (more or less) spreading-rollers, lm m fm m, which effectually and evenly spread the bronze which is dropped from the hopper on the periph-ery of the plush-bronze'roller, and they atthe same time prevent the bronze from being thrown oft' at a tangent, as has heretofore been the case. The bronze-roller is 'driven through the medium of the friction-wheel n on its shaft, and the two intermediate ones, o 0, the latter ruiming in contact with the large friction-wheel A on the m'ain shaft G. `A sheet-metal cover, B, made in'sections, is so constructed as to completcly cover the working parts, and its shape `and course may be particularly followed by refe erence to Fig. l. Those parts obscured by the frame of the machine are indicated by the dotted lines composed of alternate dashes and dots, and it will be seen that any escape wh atever of bronze onto any ofthe working parts of the machine or out into the room i's prevented in the most perfect manner.

To fully understand the direction in which the several parts of the machine move, special reference is made to the arrows marked thereon.

Having described the construction, I will now describe the operation. The operative, standing in front of the feed-board, feeds the sheet under the griper, which' is open when on a level with the feed-table, and closes just before passing under the cover, clamping the sheet against the rubber' bed on the periphery of the cylinder. The sheet, having been previously sized, is carried under the bronze-roller, (which receives its supply from the hopper and has it evenly spread on its periphery by the four spreadingrollerm) when it is completely rubbed over by said roller, the bronze adhering perfectly to the sized portions of the sheetand lyin gloosely on thebalance. It is then carried under the upper wiping or cleanin g-roller, whichistravelingabout the saine speed (which is slow) with the cylinder, and the sheet is slowly and surely wiped and polished. All the superfluous bronze is carried up on the'periphery of the cleaning-roller in a direction reverse to that of the cylinders motion, and is brushed off the cleaning-roller by the rapidly-revolving brush, which in turn is cleaned by the reel, which revolves in a reverse direction and with a still faster motion, the bronze dropping down into the receptacle. The sheet then passes down to the lower or auxiliary cleaning or wiping-brush, where the same operation is performed, so that, where the character of the work requires a large amount of bronze to be used, which might not be perfectly wiped oi' and polished by the upper wiping-roller, then the defect would be remedied by this lower one. The quantity of bronze wiped by this roller being comparatively small, a simple comb is used for cleaning the brush. The sheet ished, is carried around until the griper is opened by contact with the lower lug 7, when the sheet is dropped onto the skeleton apron and carried along and deposited in the receiver V. As bevarious shafts are under control, and they are regulated atrthe will of the builder of the machine, as experience will dictate.

Having described the construction and operation of my improved bronzing-machine, what I claim as new, and desire to secure by Letters Patent, is

l. The hopper, constructed as described, when arranged with the lifting-frame of the dusting and spreading-rolls, inthe manner and for the purpose set forth.

2. The combination and arrangement, with the distributing-rollers, operating substantially as and for the purposes hereinbefore described.

3. The bronze-roller, constructed as described, in combination with the raising-lever or automatic lifting device, substantially as described, for the purposes set forth.

4. The gripers, constructed as described, in

for the purposes set forth.

5. The closing springs or the back of the griper-arins, so constructed and operating as to close the arn1-holes in the periphery ofthe cylinder to prevent the escape into the interior thereof of bronze.

same of bronze they take up from the sheet, when arranged to operate as shown and described.

having now been thoroughly cleaned and pol fore stated, the speed and lines o f motion of the bronzing-roller, of one or more (preferably four)V combination with the cylinder and releasing lugs,

their equivalent on A 6. The combination, with the polishing andV cleaning-rollers, of the brushes for freeingjthe Y 7. The combination, with the polishing and cleaning-roller, or any brushes, for freeing superfluous bronze, of a reel or comb for cleaning the same, substantially as described.

8. The combination, with the first or upper polishing and cleaning-roller and freeing-brush, of a lower or auxiliary polishing and cleaning-roller and freeing-brusl1,to more perfectly efectthe certain and complete polishing` and cleaning of the sheet, as hereinbefore setv forth.

9. The bronze-receptacles, constructed as described, With two or more shields to prevent the return of bronze to th e cylinder or cleanin g-rollers.

l0. The rubber seat on the periphery of the Witness my hand to the foregoing specification this 1st day of N ovelnber, 1871.

In the presence ofv p E. F. BENTON.

WM. C. MCINTIRE, JOHN TYLER. (54)

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