US1890443A - Burnishing machine - Google Patents

Description

De@ 13 1932. 1 M. R. ANsTlcE ET AL l 1,890Q443 4 BURNISHING MACHINE Filed gan. 21, 1951 v -v sheets-Sheet 3 A Dec. 13', 1932.V M. R. ANsTlcE ET Al. .1,8904443 BURNISHING MACHINE FiledJan. 21. 195i 7 sheets-Shut" :s

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,6. C. Fossi.'

Dec. 13, 1932.

M. R. ANS-nce r-:T AL

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Dec. 13, 1932. M. R. ANsTlcE ET AL' BURNI SHING MACHINE Filed Jan. 21. 1951. -'I Sheets-smet 7 Patented Dec. 13, 1932Y UNITED STATES PATENT vo1-FICE R. ANSTICE AND' CLELANI) C. ROSS, OF ROCHESTER, NEW YORK, .ASSIGNORS TO JOSIAH ANSTICE CO.- INC., F ROCHESTER, NEW YORK BUBNISHING MACHINE App'licaun mea January 21,`1931. serial No. 510,309.-

provislon of an improved silver burnisbing machine.

A further object of the invention is the provision of an improved means or method of removing silver from the machine. Y A still further object of the invention is the provision of a. rota-ry tumbling barrel for the machine of a novel construction having novel means for starting and stopping the -rotation ofthe same. I

A still further object of the invention is the pr vision of an improved trap for the outlet of the machine tub.

Another and further object of the invention is the provision of an improved drive for the machine including a. novel form of clutch.

Other -specific objects and specific improvements incorporated in the machine forming this invention will appear from the following description and accompanying drawings.

In the draWingsy-j Figure 1" is' a perspective view of a ma? chine built in accordance with the present invention; f Y

Figure 2 is a vertical` sectional view, the machine drive not being shown;

Figure 3 is an end view, the tub and trap being shown in vertical section;

Figure 4 is an end view of the housing enclosing the machine drive;

Figure 5 is a vertical sectional view taken o the line 5 5 of Figure 4 looking in the direction indicated by arrow;

Figure 6 is a top plan view ofthe outlet trap; A

Figure 7 is aside view of the outlet trap; Figure 8 is another side view of the outlet trap Figure 9 is a detail section through a modified form of latch; Figure 10 is an elevation of the same;

Figure 11 is a perspective view of one of the burnislnng members;

Figure 12 is a longitudinal section through a modiiied form of burnishing and rinsing machine showing the tumbling barrel with a foraminous lining;

Figure 13 is a detail sectional view show-v ing the upper edges of the lining beveled `to facilitate the insertion of the lining within the tumbling barrel;

Figure 14 is aperspective view of a porner of securing a wooden lining therein;

Figure 15 is a detail longitudinal section showing the manner of securing the heads within the barrel; i

, Figure 16 is a transverse section through a. tumbling barrel provided with a composition lining;

Figure 17 is a. detail viewshowing the bolts 1f or securing the samein position'in dotted mes;

Figure 18 is an elevation of the divider in lconnection with the tumbling barrel; and

Figure 19 is an end view of the same., Describing the invention in broad terms,

Vit will be seen that a tub A is provided and supported well above the floor by a pair of legs B. Within the tub is a tumbling barrel C which is intended to be rotated by an electric motor D through suitable gearing contained within the housing E. Beyond one end of the tub A is a secondary rinsing tub F. The tumbling barrel contains a mass G of burnishingballs in which the silver H becomes buried when the machine is in operatlon. The improved outlet trap is designated as J and the improved clutch slides into the tion of a tumbling barrel showing the mansupplemental housing K supported upon the l main gear housing 4 Describing the invention and machine in more detail it will be seen that the main tub has vertical end walls 10 and short vertical side walls 11 which slant inwardly and downwardly as at 12 to meet the bottom ofthe tub 13 which bottom slants downwardly from the vertical end walls to terminate in a downwardly depending flanged opening 14 'to which the trap J is attached. Y The 'tumbling barrel C comprises a rectangular open sided center portion 1 5, the openv sides of which are closed bv the covers 16 and 17, which covers have'a-t tops 18 and tapered side walls 19. Due to the shape of the covers, the tumbling barrel in end view or cross section is of an octagonal shape.

The covers 16 and 17 are provided with arms 20 which are pivotally supported as at 21 upon struck-out portions 22 of the barrel main center portion 15. The covers'16 and 17 are pivotally supported at opposite edges of the barrel portion 15 with the result that they open invopposite directions when swung upon their pivots.

' Each cover has extending across its front edge a shaft 23 supported in ears 24 struckup from the cover. `These shafts are free to revolve in their supports and have fixed to' them two coil springs 25 which have one end 'lso 2 6 bearing against the cover, which construction causes the 'shaft 23 to rota-te against spring tension. Fixed upon the ends of the shaft beyond the barrel ends are locks or latches 27 provided with cut-out portions to form shoulders 28 adapted to engage the under side of the outwardly extending pins 29 carried by the ends of the main barrel portion 15.

kThe latches carry outwardly extending pins 30 which form handle grasps. The latches are provided with inclined inner edges 31 with the result that when the covers are forced into position, this inclined portion of the latches will ride over the pins 29 and the latches will automatically move into place under the pinsdue tothe springs 25. To release the latches, they are pulled outwardly by means of the handle grasps 30.v

To insure that the covers make a watertight closure the upper edges of the'center portion 15 of the barrel carry rubber gaskets 32 while the lower edges of the covers are grooved as at 33 for the reception of these gaskets.

The latches are provided with extended shoulders at their pivot ends to limit their travel so that they just unlatch and act as a fixed lever against the cover for lifting it wlthout putting any undue strain on the. springs.' The travel of the latches are also limited in the opposite direction so the spring tension cannot be relieved and if the cover should drop,the latches will ride over the pins and hook automatically.

.In the operation of the machine, the tumblmg barrelis filled approximately half full of a burnishing mass G which is Vcomposed of steel balls or other shaped burnishing members. Into the remaining space within the barrel the silver H is introduced. A burmshlng compound and water is also placed in the tumbling barrel.I When the barrel is rotated, a tumbling action-takes place which burnishes the silver. The length of time of the o eration is dependent upon how badly the silver is tarnished. Needles are sometimes used as a part vof the burnishi g mass, as it has been found that they will lean the highly embossed or roughened portions of the silver better than the round balls.

The barrel is provided at one end with a stub shaft 34 which is rotatably supported in a bearing 35 atone end of the tub. At its other end the barrel is provided with an elongated shaft l36, the supporting bearing for which is the gear'housing E. This shaft extends through the gear housing and through the clutch housing K and has its outer endV 37 supported in the bearing 38 formed as a part of said clutch housing.

The drive motor D is'supported upon a bracket 39 and is provided with a shaft D connected t'o a shaft 40 by a iexible coupling 40 into the gearihousing and carries a Worm gear 41 which meshes with a worm wheel 42 which is free to rotate upon the shaft 36.

This worm wheel 42 carries an attached clutch member 43. The clutch proper is in reality a double clutch and is indicated at'44. This clutch 44'is free to slide upon a key 45 of the shaft 36 and is operable through the'medium of a yoke 46 which can be actuated by the clutch handle 47. The inner face of the clutch housing K is provided with a clutch portion 48. From the description just given and by reference to Figure 5, it will kbe seen that the clutch 44 can be positioned s o that it does not engage either the worm clutch 43 or the housing clutch 48.. When so positioned, the clutch is in its neutral position and a1- though the motor may be running and the worm wheel 42 revolving, the shaft 36 is stationary. By moving the clutch 44 so'that its clutchface 49 engages the worm clutch 43, driving connection is made with the shaft 36 and the barrel is caused to rotate. By moving the clutch 44 so that its clutch face 50 engages the clutch 48 of the housing K, the shaft 36 and the barrel is locked against rotation.

This clutch construction is desirable as v mass by hand is-not only slow, but is also dangerous to the hands of the operator. It

given 1n respect to the lremoval of the silver has been found that in removing the silver,

the tinesof a fork will run beneath the finger nail of the hand of the operator and inflicty Furthermore, the burnishing mass may include va ggat manydiferent shaped burnishing mem rs, such as'sharp needles, which are also liable to both paina painful injury.'

fully and seriously injure the 'hands of the operator attempting to r'mpve the silver from the mass, piece by piece.

The metal basket L, however, solves the problem of removing the silver safely and quickly. This basket has a wire mesh bottom 51. At its sides theb'asket is provided with wire handle members 52 which extend into the opposite cover member.4 This basket is of a size and/shape to permit its insertion into the central portion of the barrel after 5 one of the covers has been lifted. The depth could `be made entirely of wire netting with` out departing from the spirit of our invention.

o In using this basketit is placed in the barrelin an inverted position and to prevent its becoming wedged by reason" of some of the balls of the mass getting between its. side Ywalls and the side walls of the barrel, the

5 handles 52 of the basket are so shaped that they will tend to push inwardly towards the center of the barrel any silver or burnishing members which might lie close against the inner surface of the barrel walls and thus facilitate the positioning of the basket in the barrel. Y

After the basket has been placed in the barrel in an inverted position as indicated in Figure 2 of the drawings, the cover is low- 5 ered and locked and the barrel is given a half rotation-by hand to bring uppermost the opposite cover which is then lifted. The han-V dles' of the basket can then be grasped and the basket pulled upwardly and out of the 0 barrel. The wire meshed bottom of the basf ket permits easy passage of the burnishing mass, but vthe mesh is ofsuch a size that the silver cannot be passed through it. Thus, it will be seen that when the basket is com- 5 pletely removed, the burnishing mass remains in thebarrel while the basket will bring outA ally of the silver originally introduced into the machine!A During .the placing of the basket in the barrel, the vclutch is positioned to 3 lock the barrel against rotation, otherwise the barrel might rock and allow the burnishing which is adapted to engage a packing 65 mass to spill into the tub. When the basket is properly positioned in the barrel and the cover locked, the clutch is moved to a neutral 5 position thus permitting a half rotation of the barrel by hand and when the barrel has been rotated to bring-the opposite cover into the upper position, the clutch is again moved to lock the barrel against rocking or rotation 0 .during the removal of the basket. l

For the purpose of convenience, the rinsing tub F is provided, which has' adjacent its upperends shoulders 54 upon which the basket is supported. When supported in this' 5 position, rlnsing water can'be poured o n the silver-in the basket to wash from it any foreign matter.

It is impossible during the operation of the machine to prevent some of the balls and needles of the burnishingfmass from falling into the tub A. Likewise some of the burnishing balls and needleslind their way into the rinsing tub as some of the balls and needles of the burnishing mass are found in the spoons and other silverarticles .removed from the barrel. The tub A can be connected by a pipe 55 with the drainage system of the' building in which the machine is used or a pail can be placed under the same and it is desirous t'o prevent the passage of any of the burnishing mass into the'sewage system as it may clog the same or into the pail and furv thermore it is not desirable to-lose any of the burnishing mass as its replacement, of course, would mean an outlay of'money. To meet this requirement the outlet 14 of the tub is provided with a trap J. The trap J comprises a casting 56 having a. passageway 57 registering with the outlet 14 of the tub. Spaced from the central passageway 57 i's a supplemental outlet bend 58 into the end 59 of whichis fitted the outlet pipe 55. This trap carries a removable U-shaped cover 60 having a bayonet slot connection4 61 with the trap, which connection supports the cap so that its vbottom 62is in spaced relation with the lower ends of the passageways 57 and 58 thus forming a space for the reception of any of the balls or other burnishing members of the burnishing mass which may" fall into the tub.

These balls and other slaped burnishing members remain in the cap due to their weight, while any water in the tub will pass outwardly through the passage 58 ipto thel outlet pipe 55 or into. a pail.

It is intended 'that a trap of similar coni struction be provided for xthe rinsing tub, although it will be obvious that the trap for the rinsing tub can be done away with by prorinsing viding the means .fon-draining the tub inio the` main tub A.

' In the construction oflatch as shown in Figures 9 and- 10, 63 indicates a portion of the tumbling barrel, 64 the cover therefor forming'a water-tight joint between the cover and barrel. Formedintegral with the cover is a bifurcated ear 66, the walls of the furcations being apertured through which extends av shaft 67 on which is mounted a handle lever 68 carrying a pivoted'bale 69 whichl is adapt- .in order to form a water tight joint.

In Figure 11 we have shown aburnishing member 71, whichv has a Vspherical ortion and a tapering portion extending om a ed to engage the curved under edge of-a lug central circular portion having tapering walls so as to provide sharp edges to facilitate the cleaning of irregular shaped silverware, but it is, of course, understood that these burnishing members can be used alone or in connection withballs, needles, or any other objects to form a burnishing mass for cleaning silver. 'A

n the modification shown in Figures 12 and 1.3, 72 indicates a tub which is provided with an outlet trap 7 3'and mounted within thetub is a tumbling barrel 74 having removable covers 7 5 and 76, said tumbling barrel being rotated by a drive mechanism 77 constructed substantially as shown in the preferred embodiment of our invention. Arranged within the tumbling barrel formed by the central portion and covers is a foraminous lining 78, preferably formed of metalso as to snugly fit the inner wall of the central portion and cover portions to form a basket for separating the silver from the burnishing members, the sides' of said lining terminating in beveled portions 79 so as to force any of the articles of silver or burnishing mem bers inwardly as the basket or lining is -being inserted within the barrel. The lining conforms to the shape of the barrel and has openings 80 forming hand openings so that when the cover is removed, ngers can be inserted through the openings in order to raise.r the .basket upwardly through the mass of silverware'and burnishing articles and the burnishing compound and water.

The lining is preferably formed of sheetmetal and has conical shaped openings formed in the lower portion thereof to preventtheron'vs of forks or an other silverware bein cleaned from passing between the lining and the inner wall of the barrel, whereby a construction is-provided which snugly its the e inner wall ofthe barrel in such a manner thatit is 'impossible for any articles of the 5silver to become caught in the foramin-ous lining when the tumbler is rotated.

This providesv a construction of basket' whichv can be insertedin the tumbling barrel through one of the cover openings and withdrawn through the other cover opening in order to separate the silver from the burnishing members and with a construction of basket as herein shown, the basket can be iny serted within the tumbling barrel before the mass of silver and burnishing articles are placed therein and can remain within the barrel as the tumbler is being rotated for cleaning the silver. After the silverware has been cleaned, by removing the cover7 5 the basket can be raised vertically so as to allow the small burnishing members to pass through the openings in the basket whereby the silver 'will be separated from the burnishing articles and can be removed therefrom without any danger of the hands being injured. The basket containing the silverware is then placed in a rinsing tank as will be hereinafter fully described.

After the articles have been cleaned and it I is desired to clean additional articles. the articles to be cleaned are then dropped into the tumbler upon the mass of burnishing articles,

lburnishing compound and liquid which has remained within the tumbling barrel and the basket is inverted and forced downwardly into position within the tumbling barrel and the cover is inserted and clamped in position been burnished, the operation can be repeat-` ed so that the silverware i's removed from the tumbling barrel and the burnishing articles will remain therein.

Arranged to one side of the tub 72 is 'a rinsing tank 81 provided with an outlet trap 82, said rinsingtank being herein shown detachably supported on the tub by a bottom support 83 and an outwardly extending flange 84 which has a downwardly extending'edge adapted to lit within the groove85 formed in the upperedge of the tub so that the rinsing tank can be attached and detached. The rinsing tank is provided Witha shoulder 86 for supporting a basket 7 8 in position there-` in, said tank having a hot water4 inlet pipe 87 and an overflow 88, the inlet 87 being below:

the normal level of water Within the rinsing tank sothat the water passing up through the foraminous basket containing the silverware will float off the dirt and foreign matter andl by moving thebasket up and down through the water, the silverware will be thoroughly rinsed.

lVhile in the drawings we have shown and described the rinsing tank detachably mounted, it, of course, could be formed integral with the tub without departing from the spirit of our invention. A

In the construction as shown in Figures 12 and 13, we provide a burnishing machineI with a'foraminous basket forming a `lining snugly fitting the inner wall of the tumbling barrel formed by the central 4portion and cover which conforms to theshape of the barrel and cover members s/o as to fit snugly lagainst the walls thereof in order to prevent any of the burnishing articles from working between the outer faces 'of the basket and the inner faces of the tumbling barrel.

This provides a construction which forms a lining which increases the life of the barrel as the basket wears instead ofthe tumbling barrel and by this construction the basket can be inserted 1through either one of the openings of the barrel which are closed by the cover members and the barrel can be rotated with the silverware and burnishing members therei and after the silverware has been cleaned, it canbe readily separated from the burnishing members and withdrawn from the barrel. This facilitates the burnishing of the silverware as after the silverware has been cleaned, it can be instantly removed -when the barrel is stopped and as the basket placing a pail under the same, the cleaning compound and liquid will drain into the pail and the burnishing articles will be caught by the trap, and therefore, we do not wish to limit ourselves to the particular construction shown, as we are aware that our improved construction of trap can be used for catching the burnishing members in connection with various constructions of burnishing machines,

Some of the features of the machine not previously described, but to which attention should bendirected are that the gear and clutch housings are grease-tight which makes it possible to ship themachine ready for use and insures a perfect lubrication of the driving means for the machine. The shape of the main tub A is such as to insure 'complete drainage. This isquite important as from time to time it is necessary to flush the barrel with water and add clanin compound. The tapering of the silver removing basket is also important as this makes it'possible to introduce the basket into the barrel easily and prevents any wedging of the basket during its removal.

In the drawings and description we have shown and described the bottom of the tub provided with 'inclined walls sloping towards fthe trap to insurethat all ofthe burnishing members, such as the balls, will move freely downwardly so that they will collect 1n the lowest part of the tub so that they can be 'barrel at the same time. The'provision of. 'division` plates for different kinds of silver readilyremoved.

Attention is also directed to the factv that departures from the present machine could be made without departing fromv the spirit.

of the invention. To rovide greater capacity more than one tub and barrel could be mountedin a line and driven off of the same motor. Furthermore, dividing plates might be utilized in the barrel to separate two or three different varieties of silver such as sugar bowls, creamers and the like, and thus permit the burnishing of them all in the 'same will be desirable as they could not all be burnished in a single compartment very successfully.

In the embodiment of our invention where a sheet metal basket isprovided for fitting snugly within the interior. of the rotary tumv bling barrel, the openings or perforatlons'of the basket are placed as close together as possible to form a foraminous surface so as to allow the burnishing members to rapidly pass 'i through the openings when the basket is raised and shaken and while in the drawings we have shown and described a particular type of opening, we lare aware that various.

changes can be made and that these openings will form a perforated surface through which the burnishing members will readily pass when the basket is raised vertically from the i tumbling barrel and which will prevent theV silverware from being caught and thrown as .the barrel is rotated.

Inn Figures 14 and 15 we show a wooden lining for a tumbling barrel formed of two sections, a cover section 100 and a main section 101, but of course, we do not wish to limit ourselves to the forming of this tumblingv barrel of only two sections, as it can be formed in the same manner as thepreferred embodiment of our invention with a main section and two cover sections. l

Arranged longitudinally within the cover I section and lmain section of thettumbling bar- -rel are staves 102 which are held in position by head sections 103 and 104 which are se-Y l cured to the end sections of the tumbling barrel by bolts 105, the heads of which arecounter-sunk. The outer sections of the staves .of the cover section and main section are removed.

Inv Figures 16 and 17 we show a tumbling' barrel formed'of a main section 108A and cover section 109 provided with a composition lining formed of rubber composition 110 free from sulphur placed on a canvas backing 111 and in securing this lining/to. the side walls vand end members of the tumbling barrel, we slit the rubber'as shown at 112 so that when the head ofthe screw for bolt 113 is passed through the slit into the body of the barrel, it can be drawn tightly -down against the `canvas backing and the rubber-slit will close itself so as to protect the head' of the bolt. `This provides a novel for-in of forming a composition lining for a tumbling barrel which can be readily inserted or removed and one y which is held in position' by bolts or screws,

the heads of which are protected by the rubber lining so as to prevent the silverware barrel and when in position within the barrel being burnished from being injured in any way.

In Figure 18 we show a divider adapted to be used in connection with a tumbling barrel formed of three discs 114, 115, and 116 connected together by rods 117, said discs being of av4 shape to conform to the contour of the are held in such a position that the burnishing compartment is formed to each side of the central disc 115. This provides a construction by means of which the divider can be readilyinserted or removed as the rods and discs can be forced down through the mass of burnishing members or withdrawn therefrom so las to provide a tumbling barrel with a: series of compartments; it, of course, being understood that by increasing the number of discs, any number of compartments can be formed in a single tumbling barrel so as to receive silverwarevof diiierent kinds to be burnished.

From the foregoing description it will be Lseen that we have provided a burnishing machine having many novel features and/ so constructedl that the silverware can be readily burnished without. injuring the same in any way.

While in the drawings we have shown a canvas backing for the rubber lining, we are aware that other material can be substituted therefor, such as a foraminous material which may be of wire mesh or perforated sheet metal.

While in the drawings and description we have shown certain details of construction, we

are aware that various changes can be made burnishing medium,l saidv barrel. having f movable covers at its opposite sides, a meshed basket of a size to snuglyfit within said barrel and adapted to be placed therein in an inverted position when one of said covers `v is raised, and means to revolve said barrel and lremove said basket from the barrel sol through the opening closed by the second' cover.

2.,.A burnishing machine for silver or the like'. comprising a rotatable barrel vcarrying a burnishingmass composed of relatively small steel balls or thel like, a mesh basket adapted to be inserted into said barrel inv an inverted position .and pulled through the mass, the mesh of said basket permitting the passage of the particles of the mass and preventing the passage of the silver, and said basket being larger at its lower than at its upper end to prevent the wedging of the basket in the barrel.

3. A burnishing machinefcomprising a receptacle, a tumbling barrel rotatably mounted therein having oppositely disposed sides closed by movable covers adapted to open in opposite directions, a foraminous basket `capable of being inserted in one opening' and withdrawn through the other opening, means for rotating said tumbling barrel and means for stopping the rotation of said barrel and positioning the openings of said bar-` rel in said receptacle in vertlcal alignment with one another. f

4. A machine for burnishing silverware with burnishing members comprising a revolubly mounted t umbling barrel having open sides, covers for closing said sides and a foraminous member adapted to be inserted through one side of said barrel and withdrawn through the other side for separating the silverware from the burnishing members in said barrel and removing only the clean silverware from within said barrel.

5. A burnishing machine comprising a tumbling barrel carrying a burnishing medium, said barrel being rotatably mounted and having oppositely disposed sides closed `by removable covers, a foraminous receptacle capable of being inserted in one opening and withdrawn` through the other opening,

means forrotating said barrel, and means for stopping the rotation of said barrel and positioning the openings of the same in vertical alignment with one another.

6. An improved method of separating silcleaning and burnishing machine wherein the silver articles arecarried in a rotatable barrel with and polished by a mass of balls or the like, comprising placing in said barrel a foraminous member ofa construction to per- 1o5` ver articles from a burnishing mass in a g mit the passage of the members of said mass and obstruct the passage of silver and rotating the barrel one-half of a revolution.

7. An improved method of separating silver articles from a burnishing mass in a cleaning'and burnishing machine wherein silver articles are carried in arotatable barrel with and polished by a mass of balls or the y like, comprising dividing said barrel into two compartments by placing therein a foraminous member of a construction to permit the passage of the members of the mass and to prevent the passage of the silver articles, and

then rotating said barrel one-half of a revolution to. collect in one barrel compartment the .burnishing mass and in the other compartment on said foraminous member the silver articles.

8. A burnlshlng machine for silver or the like, comprising a rotatable barrel carrying a burnishing mass composed of balls or the v like, a foraminous member adapted to be inserted into said barrel to divide it into tw compartments, means to rotate the barrel one-half of a revolution after the insertion of said member, and said member fpermitting the passage of the articles of the mass into the lower barrel compartment and preventing the passage of the silver into the lower barrel compartment, for the purpose described. l

9. A burnishing machine for silver or the like, comprising a rotatable barrel carrying a burnishing medium, said barrel. having movable covers at its opposite sides, a foraminous basket adapted to be placed in said barrel in an inverted position when one of said covers is moved, and means tofrevolve said, barrel and remove said basket from the bar.- rel through the opening closed by the second cover.

10. A burnishing machine comprising a rotatable tumbling barrel carrying a burnishing mass and provided with opposite disposed openings closed by covers, and a foraminous basket adapted to be inserted through one opening and withdrawn through the other opening for separatingfand removing the cleaned articles from the burnishing mass.

11. ,A machine for burnishingsilverware with burnishing members comprising a rotatably mounted tumbling barrel A having open sides, covers for .closing said sides, means for rotating said barrel'and means for stopping the rotation of said barrel with the cover members in vertical alignment .with one another, and a oraminous member adapted to be inserted through "one side of said barrel and withdrawn through the other side for separating the silverware from the burnishingvmembers in said barrel.

12. A burnishing machine comprising a rotatably mounted tumbling barrel having therein oppositely disposed sides closed by covers adapted to open in opposite directions,

a foraminous basket cap able of being inserted in one 4opening and withdrawn from the other y opening, and means for rotating said tumbling barrel. y I e l13. A burnishing machine comprising@ rotatably mounted tumbling barrel havingj oppositely disposed sides closed by movable covers adapted to open in opposite directions,

-foraminous basket capable of being inserted -1n Aone opening and withdrawn through. the

, other opening, means forrotating said tuml signatures.-

bling barrel, and means for stopping the rotation of said barrel and positioning -the openingsof said barrel in vertical alignment with one another.

In testimony whereof we hereunto aflix our MoRTiME-R R. ANSTICE. GLELAND c. Ross.

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