US808482A - Buffing-machine. - Google Patents

Description

No. 808,482. PATENTED DEC. 26, 1905.

' J. M. SBLLMAYER.

BUFPING MACHINE.

APPLICATION FILED my e, 1903.

3 SHEETS-SHEET 1.

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Inventor- W I Q/MWy/ xi. A ttbrney- Nm 808,482. PATENTED DEC. 26, 1905.

J. M. SELLMAYER. BUFFING MACHINE.

APPLICATION FILED JUNE 8. 1903. 3 SHEETs SHEET 2' 8L Attorne I PATENTED DEC. 26, 1905. J; M. SELLMAYER. BUFPING MACHINE.

APPLICATION FILED JUNE 8, 1903.

3 SHEETS-SHEET 3.

Witnesses. Inventore? Attorney U'Nrrn era res PATENT orrrcn.

BUFFlNG-IVIACHINE.

Specification of Letters Patent.

latented Dec. 26, 1905.

Application filed June 8, 1903. Serial No. 160,490.

To (all whom it Wan/y concern:

Be it known that I, JOHN M. SELLMAYER, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Buffing- Machines; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference-numerals marked thereon.

My present invention relates to improvernents in buffing or polishing machines,

the present embodiment being particularly adapted for polishing sheet-metal articles, such as the tops of coffeepots, &c., and has for its object the production of a machine of this character wherein may be employed a plurality of work-supports or heads carried upon a rotary table or support the position of which may be adjusted both vertically and angularly without interrupting the operation of the machine and wherein the rotary motion of the table or support is transmitted to the work-supports or heads to cause rotation thereof in a reverse direction to that of said table or support.

Another object of my said invention is to provide a buffing-wheel stand particularly adapted for use in connection with the worksupport before mentioned in which the arbor carrying the buffing-wheels is capable of longitudinal motion and wherein the vertical position of said arbor may be adjusted to meet the conditions of varying requirements.

Other features of novelty and advantage will be hereinafter more fully explained, and pointed out in the claims hereunto annexed.

In the drawings, Figure 1 represents a front elevation of a machine embodying my said invention, parts being broken away for clearness in illustration. Fig. 2 is a side elevation of the same. Fig. 3 represents a section upon the line 3 3 of Fig. 1 looking in the direction of the arrows. Fig. 4 is a plan view of the buffing-table, parts being broken away to more fully illustrate the parts. Fig. 5 is a detail view, partly in section, of the elevating-gear for the buffing-wheel arbor. Fig. 6 is a detached view of the retaining-guard for the buffing-table, and Fig. 7 represents a transverse section upon the line 7 7 of Fig. l with parts omitted.

In the views the same numerals of reference designate similar parts.

In the present embodiment of my invention 1 designates the main supporting-frame of the machine of any preferred construction, upon the lower portion of which are provided trunnion-bearings 2 3, upon which are j0ur naled the bearings 4 5, respectively, of the secondary frame 6. Journaled in the trunnion-bearings 3 upon the main frame and mounted concentrically with the secondary frame 6 is a main driving-shaft 7, carrying upon its outer end the belt-pulley 8, preferably flanged, as shown, and upon the inner end of this driving-shaft 7 is rigidly secured the bevel-gear 9, the inner extremity of said shaft beyond the gear 9' being supported in a bearing 10, carried by the spacing-arm 11 adjacent the bearings 4 5 upon the secondary frame 6. Adjacent the drivingulley 8 and in alinement therewith is a be t-tightening pulley 12, journaled upon the bell-crank 13, pivoted at 14 to the main frame 1, to which the sliding lever 15 is connected at the point 16, a series of notches 17 17 being provided near the operating end of said lever adapted to engage the stationary stop 18 upon the frame 1. By adjusting the position of the pulley 12 through the lever 15 the slack in the belt may be eliminated to any desired degree.

At the-upper portion of the main frame and upon each side thereof are formed a pair of curved slots 19 19, each forming a sector of a circle struck from the center of motion of the secondary frame 6. In other words, they lie in the path of a circle struck from the center of the trunnion-bearings 2 3, upon which the secondary frame 6 is pivotally mounted. Passing through each of these slots 19 is an adjusting-screw 20, by means of which the relative position of the main frame 1 and the secondary frame 6 may be adjustably secured. Extending outwardly from the main frame 1 is a bracket or supporting-arm 21, provided upon its upper end with a bearing 22, in which the screw 23 is revolubly mounted. This screw 23 is provided at one end with the hand-wheel 24, abutting against one side of the arm 21, and with the collar 25, abutting against the other side thereof, to prevent longitudinal movement of said screw 23. The opposite end of said screw 23 is screw-threaded and passes through the screwthreaded block 26, pivotally supported to permit rotation thereof about its horizontal axis by the set-screws 27 27, screw-threaded into the stationary bracket or support 28 upon the under side of the top of the frame 6,

check-nuts 29 29 being provided for retaining said screws 27 27 in their adjusted position. By such a construction it will be understood that by operating the screw 23 through the hand-wheel 24 the secondary frame 6 may be caused to assume an angular position upon either side of the vertical, the set-screws being employed for rigidly securing said frame in its adjusted position.

Upon the top of the secondary frame 6 is formed a supporting-plate 30, perforated at 31 31., and beneath which are secured the guides 32. Into these guides 32 3.2 of the secondary frame 6 are slidingly fitted the guide-rods 33 33, secured to the under side of the supporting-plate 34. To the upper side of this support 34 is rigidly secured the annular flange 35, provided upon its inner surface with an internal gear 36. The upper edge of this annular flange 35 is recessed, as at 37, and into this recess is adapted to fit the annular table 38, the edge 58 thereof overlapping to exclude the entrance of dust or other foreign matter beneath the said table. This table 38 is revolubly fitted upon the supporting-flange 35 and is provided with a plurality of recesses 39 beneath which extend the bearings 4O 40 upon the undersidcof the table 38. Resting in each recess 39 upon the upper side of the table 38 is awork-support or head 41, provided with a depending stem 42, passing through the extended bearing 40 and carrying at its lower end a pinion. 43, meshing with the internal gear 36. Passing through each of these buffing-heads is an ejecting-pin 44, the head of which preferably lies flush with the upper surface of the head 41, the lower extremity extending below said gearpinion. 43. Above the upper side of the supporting-plate 34 is located a curved camplate 46, lying in a path directly beneath the path of the lower ends of the pins 44, said plate 46 being pivotally secured at one end to the pivot-block 47. Beneath the free end of this cam-plate 46 is adapted to normally rest the lever 4S,pivoted at its inner end upon the pin 49, the free end 50 of this lever extendingoutside the inclosing parts, by means of which the same maybe shifted into the position indicated by dotted lines in Fig. 4. Then this lever 48 occupies this position, the cam-plate 46 will occupy the position indicated by dotted lines in F ig. 3, and thereby causing each pin 44 carried by the worksupport 41 to rise up into the position as indicated by the dotted lines in Fig. 3. As each of the work-supports 41 is adapted to carry an article to be polished, it is obvious that the rising of said pins will lift the articles, thereby facilitating their removal from the work-supports without interrupting the operation of the machine. The lever 48, however, will normally occupy the position indicated in full lines in Figs. 3 and 4.

Depending centrally from the table 38 is an extended bearing 51., in which is rigidly secured the upper end of the vertically-dis posed shaft 52, any suitable means being adopted-such as a key and check-nut, as shown for holding the parts in fixed relation. This shaft 52 is provided upon its lower portion. with. an elongated keyway or slot 53, in which rests the key 54, carried by the bevel-gear 55, slidingly mounted upon said shaft, whereby motion may be transmitted from said gear 55 to said shaft irrespective of the longitudinal position of said gear relativelyto said shaft. This bevel-gear 55 meshes with the bevel-gear 9 upon the driving-shaft 7 and is confined from upward motion by the adjustable tln'ust-bearing plate 56, held by bolts or other suitable means to the stationary support 57, carried by the secondary frame 6. )ownward thrust of said gear is taken up by the thrust-bearing plate 58, mounted upon the stationary support 11 of the secondary frame 6. Therefore it will be obvious that motion of the driving shaft 7 will be transmitted through the l.)evelgears 9 and 55 to the vertical shaft 52, causing the supporting table 38, rigidly mounted upon the upper end thereof, to rotate. As this table 38, carrying the worksupports 41., rotates, the pinions 43, carried upon said worksupports and meshing with the stationary internal gear 36,will be caused. to rotate in z. direction opposite to the direction of rotation of said supprating-tab]e, a f ature the utility of which will hereinafter more fully appear. At the same time the ejecting-pins 44, passing through the work-supports, will normally remain in their lowermost position, the lever 48 beneath the caneplate 46 i'iormally resting in the position shown in full lines in Figs. 3 and 4. However, when the polishing operation has been completed. upon the objects upon the worksupports the lever 48 is shifted into the position indicated by dotted lines in Fig. 4, causing the cam-plate 46 to assume the position indicated by dotted lines in Fig. 3, and as each pin 44 reaches the cam-plate they will be elevated successively, thereby lifting the object upon the work-support, from which position they may be readily removed by an attendant, or, if preferred, automatic mechanism may be employed for this purpose.

In order to prevent the articles operated upon from being displaced under the action of the buffing-wheels, to be hereinafter described, one or more guards 59, curved, as shown in Fig. 4, and resting directly above the work-supports, may be employed. This guard 59 may be held at its outer end by a clamping member 60, provided with a clamping-screw 61 for retaining the same in adjusted position. This clamping member 60 is provided with a depending stem 62, slidingly mounted in the guiding-arms 63 63 of a bracket 64, carried upon the side of the supthe downward motion of said stem 62.

porting-table, a set-collar 65, provided with a set-screw 66, being provided immediately adjacent the lower arm 63 of said bracket and against which said collar abuts to limit Interposed between the upper side of this setcollar 65 and the lower surface of the upper arm 63 of the clamp 64 is a helical spring 67, the normal tendency of which is to retain said clamp in its lowermost position, and consequently hold the guard 59 down upon the bufling-heads 41. When articles of a different height are placed upon the work-supports 41, the height of the guard 59 may be varied by adjusting the set-collar 65 upon the stem 62, the yielding pressure exerted by the spring 67 and the limit of movement of the clamping device being unaffected by the adjustment.

To enable work of a varying nature to be operated upon to the best advantage and to prevent displacement under the action of the bufling-wheels by changing the relative angle between the work and the wheels, an adjustment has been provided, as hereinbefore described, whereby the secondary frame 6, carrying the supporting-table, may be moved to and retained .in any desired position relatively to the vertical. Vertical adjustment for the supporting-table carrying the work-supports may also be employed, and in the present embodiment the hollow screw 68 is loosely mounted over the vertical shaft 52, being rigidly secured at its upper end by the flange 69 to the under side of the supportingplate 34. Meshing with the thread upon this screw 68 is an internally-threaded wormwheel 70. This worm-wheel 70 is confined in its upward motion by the thrust-bearing plate 71, secured to the plate 30, the down ward thrust of said worm-wheel being received upon the lower thrust-bearing plate 72, mounted upon the support 73, carried by the secondary frame 6, an elongated sleeve 74 being provided upon said bearing-plate 72, forming a guide for the screw 68. Meshing with the teeth upon the worm-wheel 70 is a worm-screw 75, carried by the shaft 76, mounted at its inner end in bearings 77 77 and supported at its outer end by the bearing 78, carried by the top plate 30 of the secondary frame, whereby relative motion between the main and secondary frames will not destroy the mesh between said wormwheel 7 O and the worm 75. A hand-wheel 79 may be provided upon the outer end of the worm-shaft 7 6, by means of which the parts may be operated. Thus it will be seen that by rotating the hand-wheel 79 in the proper direction the worm 75, meshing with the worm-wheel 70, in turn acts upon the screw 68, causing the support carrying the work-supports to be elevated or depressedto any height desired within reasonable limits without interrupting the operation of the machine. The work-supporting table will be frame 6 are mounted concentrically in the main frame 1, relative motion about this common center will not affect the mesh of the gears 9 and 55. Therefore rotation of the hand-wheel 24, supported by the main frame, will cause the screw 23 to act upon the screwthreaded member 26, carried by the secondary frame, causing said secondary frame to assume any desired position upon either side of the vertical without interrupting the operation of the machine.

Located adjacent the supporting-table is the buffing-wheel stand, which in the present embodiment of my inventioncompri ses the stationary standards 80 80, each provided with the vertical bore 81, through which pass the vertically-disposed pedestals 82 82, each pedestal being provided upon its upper end with a journal boX 83 83. Passing through both of these journal-boxes 83 83 is an arbor 84, carrying upon one end thereof the buffing-wheels 85 of the usual or any preferred type and provided with a drivingpulley 86 and a loose pulley 86 of any suitable character. Upon the opposite end of the arbor 84 are provided the stationary collars 87 87, between which the collar 88 is loosely interposed. Pivotally connected to this collar 88 through the trunnion-bearing screws 89 is the trunnion-bracket 90, secured by the set-screw 91 to the guiderod 92. This guiderod 92 is slidingly mounted in the guiding member 93, supported by the trunnion-bearing 94. At the upper portion of this guiding member 93 is a collar 95, adapted to be held in an adjusted position upon the member 93 by the set-screw 96. Secured to this collar 95 is a pin 97, passing through the slot 98 in the rod 99, said rod 99 being slidingly mounted in bearings 100 100 upon the standards 80 80.

101 is an operating lever pivoted at its lower end at the point102 and provided with an elongated slot 103, in which rests the pin 104, carried by the stop 105 upon the sliding rod 99. By shifting this operating-lever 101 in either direction the arbor 84, carrying the bufling-wheels 85, is shifted longitudinally in its journal-boxes 83, causing the buffingwheels 85 to occupy any desired position upon the rotary table or support, continued motion of said lever to the left withdrawing the buffing-wheels from the tables and throwing the belt upon the loose pulley 86 Elevating and depressing mechanism is also provided for this arbor 84 and in the present embodiment comprises the pinions 106 106, both rigidly secured upon the shaft 107, suitably journaled in the standards 80. Meshing with said pinions 107 are the rack-teeth ITO 108, formed upon each of the pedestals 82 82, whereby rotation of said pinions 1 07 will cause the elevation or depression of the pedestals 82, carrying the arbor 84. Rotation of the shaft 107 is effected through the worm-wheel 109, mounted thereon, with which the worm 110 upon the shaft 111 meshes, a hand-wheel 112 being provided, through which motion may be imparted to said worm-shaft.

I/Vhile I have shown but one buffing-stand in Fig. 1, it will of course be understood that two or more buHing-stands, each carrying any desired number of bufling-wheels, may be provided for operating either separately or simultaneously upon the work carried upon the work table or support.

In operation power is applied to the buffingwheels through the driving pulley 86 (the lever 101 having been shifted to the po sition shown in Fig. 1) and to the work table or support through the driving-pulley 8, the belt-tightening pulley 12 being ad.- justed to relieve the driving-belt of excessive slack. From the driving-pulley 8 power will be transmitted through the drivingshaft 7 and through the bevel-gears 9 and 55 to the vertical shaft 52, which in turn trans mits its motion to the rotary table 38, carrying the work-supports 41, revolubly mounted therein. By the rotation of the table 38 the pinions 43, provided upon each of the worksupports and engaging the fixed internal gear 36, will be rotated, the direction of rotation of the heads being in a reverse direction to the motion ofthe said table 38. The height of the rotary table may now be adjusted through the operation of the hand. wheel 79, and the angular position of said table upon either side of the vertical may be adjusted through operation of the hand-wheel 24, as hereinbefore fully described. Therefore it will be understood that the rotary table carrying the work-supports or heads maybe operated continuously, the articles being placed upon. the work-supports or heads and removed after being ejected by the pins 44, acted upon by the cam-plate 46, controlled in its action by the lever 48, without interrupting the operation of the machine. During the operation of removing and placing the forms or articles to be polished upon the buffing-table or for setting up the machine for different classes of work the lever 101 may be swung to the left, Fig. 1, causing the bufling-wheels to swing clear of the table, and should it be desired to discontinue the operation of the machine the said lever 101 will be shifted until the belt changes to the loose pulley 86", when the ro tation of the buffing-wheels will cease.

In providing a machine of this character it will be obvious to those skilled in the art that the possibilities in work of varying requirements is pratically unlimited. At the same time the construction and arrangement of the parts combine to produce a machine of the maximum rigidity, with. a corresponding reduction in the weight of the parts and in the cost of manufacture.

In the present embodiment of my inven tion I have illustrated for convenience of description a machine particularly adapted to be employed in buffing, burnishing, or polishing sheet-metal articles, such as coffeepots or can-covers and the like, the work-supports 41 being so shaped that said covers will snugly fit over them to produce sufficient frietion as to be retained in position thereon and to take up the rotary motion of said sup ports. This retaining action will of course be supplemented by the guards 59 while the work is being operated upon by the buffingwheels or other tools that may be em loyed. However, it will be understood that I do not limit myself specifically to a buffing or pol ishing machine and that the work-supports may be varied in their shape or configuration to securely hold articles of different shapes or characteristics and to successively bring them into position to be operated upon by a tool of any suitable character, all of which will come within. the province of my invention.

\Vhile I have embodied my invention in the form herein shown and described, it will be understood that I do not limit myself to such form nor to the uses to which the machine may be applicable, as certain parts may be omitted or added to and certain modifications and changes might suggest themselves to those skilled in the art, all of which changes and modifications could be made without departing from the spirit of my invention.

I claim as my invention 1. In a machine of the character described, the combination with a stand, and an operating-tool carried thereby, of a supportingtable, a plurality of work-supports thereon, and means for adjusting and retaining the table in different vertical positions relatively to the tool.

2. In a machine of the character described, the combination with a stand, and an operating-tool carried thereby, of a revoluble supportingtable, a plurality of circularlyarranged Work-supports thereon, and means between said tool and table.

3. In a machine of the character described, the combination with a stand, and an operating-tool carried thereby, or a work-support ing table, a plurality of work-supports thereon, and means for effecting a vertical and angular adjustment of the relation of said tool and table.

4-. In a machine of the character described, the combination with a stand and an operating-tool carried thereby, of an angularlyadjustable table, work-supports revolubly l mounted thereon, and means interposed befor effecting a relative angular adjustment tween said table and supports for imparting rotary motion from said table to the work supports.

5. In a machine of the character described, the combination with a stand and an operating-tool carried thereby, of a rotary table, and a non-rotatable support carried on an angularly-adjustable frame, work-supporting heads revolubly mounted thereon, and means for transmittingi'motion from said table to said heads.

6. In a machine of the character described, the combination with a stand, and an oper ating-tool carried thereby, of a rotary table,

work-supports revolubly mounted thereon, and means for effecting a vertical adjustment of said table.

7. In a machine of the character described, the combination with a stand, and an opcr ating-tool carried thereby, of a rotary table, work-supports revolubly mounted thereon, means for transmitting motion from said table to said supports, and means for adjusting said table both vertically and angularly relatively to said tool.

8. In a machine of the character described, the combination with a stand, and an operating-tool carried thereby, of a vertically-adjustable table, work-supporting heads revolubly mounted thereon, and means for imparting a rotary motion to said table, and to cause said motion to be transmitted to said heads.

9. In a machine of the character described, the combination with a stand, and an operating-tool carried thereby, of a vertically-adjustable table, work-supporting heads revolubly mounted thereon, means for imparting a rotary motion to said table, and means for transmitting said motion to said heads to cause rotation thereof in an opposite direction.

10. In a machine of the character described, the combination with a stand, and an operating-tool carried thereby, of a worksupporting table, a secondary frame supporting said table, a main frame supporting said secondary frame, and means for adjusting said secondary frame upon said main frame at an angle to the vertical.

1 1. In a bufling-machine, the combination with a stand, and bufling wheels carried thereby, of a work-supporting table, a secondary frame supporting said table, means for adjusting said table vertically, a main frame supporting said secondary frame, and means for adjusting said secondary frame upon said main frame at an angle to the vertical.

12. In a buffing-machine, the combination with a stand, and bufiingwheels carried thereby, of a main frame, a secondary frame angularly adjustable upon said main frame, a support mountedupon said secondary frame and a work-supporting table revolubly mounted upon said support.

13. In a buffing-machine, the combination with a stand, and bufl ingwheels carried thereby, of a main frame, a secondary frame angularly adjustable upon said main frame, a support adjustable vertically upon said secondary frame and a work-supporting table revolubly mounted upon said support.

14. In a buffing-machine, the combination with a stand, and buflingwheels carried thereby, of a main frame, a secondary frame angularly adjustable upon said main frame, a support adjustably mounted upon said secondary frame, a table revolubly mounted upon said support, work-supports or heads revolubly mounted upon said table and means for imparting rotary motion to said heads.

15. In a buffing-machine, the combination with a stand, and bufling-wheels carried thereby, of a main frame, a secondary frame angularly adjustable upon said main frame, a support adjustably mounted upon said secondary frame, a table revolubly mounted upon said support, work-supports revolubly mounted upon said table, and means for transmitting the rotary motion of said table to said supports to impartareverse motion to to the latter.

16. The combination of a relatively stationary support, a table revolubly mounted thereon, work-supporting heads revolubly mounted upon said table and means interposed between said support and table for transmitting rotary motion from the latter to each of said heads in a reverse direction from that of the table.

17. The combination of a relativelystationary support, a table revolubly mounted thereon, worksupporting heads revolubly mounted upon said table and means for transmitting the motion of said table to said heads to cause rotation thereof in a reverse direction to the rotation of said table.

18. In a buffing or polishing machine, the combination with a hollow casing provided with an internal gear, of a revoluble-table having one or more work-supports revolubly mounted thereon, and means connecting the Work-supports and the internal gear.

19. In a buffing or polishing machine, the

combination with a casing provided with an.

internal gear, of a revoluble table, a plurality of work-supports revolubly mounted on the table, and a pinion connected to each worksupport and meshing with the internal gear for imparting rotary motion to the work-supports by the relative motion of the table.

20. In a bufling or polishing machine, the combination with a hollow annular support, of a revoluble table, one or more work-supports revolubly mounted on the table, and devices connected to the work-supports and cooperating with the inner surface of the annular support for rotating the work-supports by relative motion between the table and the annular support.

21. In a bufling 01' polishing machine, the combination with a relatively fixed annular casing having an internal gear arranged upon its inner surface, of a revoluble table, worksupports revolubly mounted on the table, and pinions carried by the work-supports and moshing with the internal gear of the annular support.

22. The combination of a support, a table revolubly mounted thereon carrying a plurality of worleholders, and a guard having a laterally-adjustable arm for retaining the articles upon said holders while being operated on, and also having a support ng-arm resting in bearings on said support and having a spring acting thereon to produce a pressure between the retainingarm and the workholder.

23. The combination with a support and a table revolubly mounted thereon carrying a plurality of work-holders, of a guard having an arm adapted to rest in proximity to said holders, a supporting-arm connected to the retaining-arm and movably supported from a relatively fixed bracket, and operating means interposed between the bracket and an adjustable step on the supporting-arm for producing a force tending to move the retaining-arm toward the work-holders.

24;. The combination. with a support, a rel atively movable table thereon carrying a plurality of revoluble work-holders, and. a pair of spaced operating-tools adapted to operate on the work carried by the holders, of a guard having an arm extending between the spaced tools-for retaining the work upon. each holder while it is being operated on by said tools.

25. The combination of a support, a relatively movable table mounted thereon carrying a plurality of flat revoluble heads over which the articles to be polished are adapted to be fitted, ejectors carried by said heads and having a portion adapted to engage the article to eject it from its head, and an adjustable cam for actuating said ejectors.

26. The combination of a support, a relatively movable table, work-supports carried thereby having convex heads over which the articles to bepolished. are adapted tobe fitted, ejectors carried by said work-supports having portions adapted to engage said articles to remove them from their corresponding heads, and a movable actuating device adapted to operate said ejeetors as the latter are carried past it by the movable table.

27. In a machine of the character described, the combination with a support, of a movable table mounted thereon carrying a plurality of work-supporting heads, ejectors having portions adapted to engage the articles of work to displace them from their supporting-heads, a movable actuating device for operating the ejeetors, as the latter are carried past it by the movable table and means for moving said actuating device into and out of operative position.

28. The combination with a casing, a relatively movable table mounted thereon carrying plurality of worlvsu 'iporting heads, and ejectors adapted to displace the articles of work carried by said heads, of a movable actuating device mounted within the casing and adapted. to operate said ejectors by the relative motion of the table, and means operable from the exterior of the casing for mov ing said actuating device into and out of operative position.

29. The combination of a support, a table revolubly mounted thereon, work-supports upon said table, ejecting-pins upon said support, a camplate and means for moving said plate into the path of said pins to operate the same.

' 30. In a machine of the character described, the combination of a table, a support carrying said table, a screw carried by said support, supporting-frame beneath said support, and an operating-shaft carried by said frame and operating upon said screw for adjusting the relative positions of said frame and support.

31. The combination of a rotary table, a support carrying said table, a screw carried by said support, a supporting-frame beneath said support, and an internally-threaded worm-wheel and its cooperating worm operating upon said screw for adjusting the relative positions of said support and frame.

32. In a machine of the character de scribed, the combination of a rotary table, a plurality of work-supports thereon, a support carrying said table, a screw carried by said support, a supporting-frame, a wormwheel operating upon said screw, and a worm meshing with said worm-wheel for adjusting the relative positions of said support and frame.

33. The combination of a main frame, a secondary frame pivotally supported thereon, a vertically-adjustable table mounted upon said secondary frame, a plurality of work-supports mounted thereon, and adj usting means interposed between said frames for varying the ang ular adjustment thereof.

34. In a machine of the character described, the eombination of a main frame, a secondary frame pivotally supported thereon, a table revolubly mounted upon said secondary frame, a plurality of work-supports mounted thereon, means for transmitting motion to said table through said frames, means for imparting rotary motion to said supports, and adjusting means interposed between said frames for varying the angular adj ustment thereof.

35. The combination. of a main frame, a secondary frame mounted upon trunnions upon said main frame, a vertically-adj ustable table revolubly mounted upon said secondary frame, a plurality of Work-supports carried by said table, means for transmitting motion through said main and secondary frames to said table, means for transmitting motion from said table to said supports, and

an adj Listing-screw interposed between said frames for varying the relative angular position of said frames.

36. In a buffing-111achine, the combination With the supports, of pedestal-bearings movable vertically in said supports and having an arbor journaled in their upper ends, a rack formed upon each pedestal, a shaft having pinions cooperating with the racks of the pedestals, and means for operating the shaft to simultaneously elevate and lower the pedestals.

37. In a buffing-machine, the combination with the supports, of bearings journaled to move vertically in said supports and having an arbor journaled in their upper ends, a rack formed upon each bearing, a shaft having pinions cooperating with the racks of the bearings, a Worm carried by the said shaft,

and a worm cooperating therewith for operating the said shaft.

38. In a buffing-stand, the combination With the pedestal-supports, bearings adj ustably mounted therein, and an arbor journaled in said bearings and carrying the buffing-Wheels, of means interposed between said bearings and their pedestal-supports for adjusting the arbor laterally.

39. In a buffing-machine, the combination With the supports, and the bearings having the axially-movable arbor j ournaled therein, of a pivoted arm having an extensible portion operatively connected to the arbor for shifting it longitudinally, and means for operating said arm.

40. In a buffing or polishing machine, the combination With the relatively fixed supports, and the bearings movable vertically therein having an axiallymovable arbor journaled therein, of a pivoted arm, an extensible member operatively connecting the said arm and arbor at difierent axial and vertical positions of the latter, and operating means for the said arm.

JOHN M. SELLMAYER. l/Vitnesses: G. WILLARD RICH,

CLARENCE A. BATEMAN.

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