US657357A - Sandpapering-machine. - Google Patents

Description

No. 657,357. Patented Sept. 4, 1900.

J. L. PERRY.

SANDPAPERING MACHINE. I (Application filed Nov. 27, 1899. Renewed July 81, 1900.)

8 Sheets-Sheet 1,

(No Model.)

I nve'ntor.

W itnesses.

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(Application filqd Nov. 27, 1899. Renewed July 81, 1900.)

(No Model.)

Inventor.

Witnesses.

h-y w h uwhj Attorney-S,

J.'L. PERRY. SANDPAPEBING MACHINE.

(Appiicalion med 'nov. 27, 1899. Renewed July 31, 1900.) I

No. 657,357. PatantadSept. 4, I900.

(No Model.) a sheets-Shut s.

I x v. Q

Witnesses.

Attorneys TNE NORRIS versus co. s-wofllm'wuv wnsnmamm n c No. 657,357. Patented Sept. '4, I900. 7

LL. PERRY.

SANDPAPEBING MACHINE.

(Application filed Ndv. 27, 1899. Renewed July 31, 1900.)

8 Sheats-$heet 4.

(No Model.)

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'AttorneyS m: scams PETERS co. womufln. Mwmon. 0.1:.

No. 657,357. Patented Sept. 4, I900. J. L. PERRY.

SANDPAPERING MACHINE. (Applicafion filed Nov. 27, 1899. Renewed July 81, 1900.)

8 Shets-Sheet 5.

(No Model.)

Inventor.

W itnesses.

Attorneys m: mums PETER$ co, PHOTLXLITNQ. WASHINGTON. a. c.

No. 657,357.. Paianted Supt. 4, I900.

J. L. PERRY.

SANDPAPEBING MACHINE. (Application filed-Nov. 27, 1899. n' newea July 31, 1900.

(No Il'odal.) V a Shoots-S1100! a.

Witnesses. Inventor.

8 Sheets-Sheet 7.

(No Model.)

lnventbr.

A ctorn eys No. 657,357. Patented Sept. 4, I900; a. L.1PERRY.

SANDPAPERING MACHINE.

(Application filed Nov. 2'2, 1899. Renewed July 31, 1900.)

(No Model.) 8 Sheets-Sheet 8.

niigm 54 saga s Witnesses. I nventor.

Attornevgs,

l UNT ED STATES;

PATENT OFFICE.

JAMES L. BERRY, on SMITHvILLE, NEW JERSEY, ASSIGNOR TO-THE Hie. SMITH M-AGHINE COMPANY, OF SAME PLACE.

SAND PA PEiRING-MACH I N E.

SPEBIFICATION: forming part of Letters Patent No. 657,357, dated September 4:, lOO.

' Applicationfile'd notembtrz v. LBQQqR'enewed m 31, 1900. Serial No. 25,457. (No model.)

To all whom it may concern: V

Be it known that 1, JAMES L. PERRY, aciti Zen of the United States, residing at Smith- 'ville, county of Burlington, and State of New Jersey, have invented a new and useful Improvement in- Sandpapering Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of to this specification.

My invention relates to sandpapering-machines, and has for its object to so construct the machine as to give a smooth finish to the work; to provide an improved yieldingfeed [5 ing device; to provide for varying the adjustment at different points of the support for the work and of the several sanding devices; to secure a uniformity of level of the support for the work and of the sanding devices, so as to insure a uniform finish to the work; to provide for removing and replacing the sandpaper expeditiously, and to perfect the operation of the entire machine.

My invention consists of an endless conveyer traveling underthesanding-drumsand adapted to feed the work forward and provided with yielding cushions upon. which the work is laid and againstwhich it is pressed during the feeding.

It consists also of means for raising and lowering independently the several corners of the support for the conveyer and for leveling the support as a whole.

It consists also of means for imparting to 5 the drums a vibrating or side-to-side motion during the rotation of the drums and feeding forward of the work.

It consists also of means for. adjusting in-f dependently the ends of each drum and level is as follows: Each section 20 has secured to ing each drum as a whole.

It consists also of various details of. con struction,al1 of which will be hereinafter fully and contain the conical-shaped rubber cus'h described.

In the drawings, Figure '1 is a side eleva- 5 tion; Fig. 2, asintilar view from the other side; Fig. 3, a section on the line 3 3 of Fig. 4; Fig. 4:, a sectional plan on the line 4 4 of Fig. 3; Fig. 5, a section on the line 5 f Fig. 1. Figs. 6 and 6 are side elevations of 50 the sandpaper-drum. Fig. 7 is a section on the line 7 7 of Fig. 6. Fig. 8 is an enlarged chains 19.

detail, in side elevation, of the elevating and leveling mechanism for the sandpaper-drum. Fig. 9is a section on the line 9 9 of Fig. 8. Fig. 10 is a section on the line 10 10 of Fig. 9. Fig. 11 is a side elevation of the vibrating mechanism for the sandpaper-drum. Fig. 12

is a section on the line 12 12 of Fig. 11. Fig.

13 is a section on the line 13 13 of Fig. 12. Fig. 14 is a detail section through a portion of the conveyer, and Fig. 15 is a sectional view through one of the table-leveling nuts and screws.

1 is the machine-frame; 2, the vertically-adjusta'ble carrier-supporting table; 3, the endless carrier, and-4 the sanding-drums.

5 is the main driving-shaft, having the driving-pulley 5 and the pulley 6.

7 is a shaft having the pulley 8.

9 is abelt between pulleys 6 and S.

10is an idle pulley engaging belt 9. Pulley lO'is journaled in arm 11, pivot-ed on shaft 7.

10 is a'lever pivoted on shaft of pulley 10 i and has teeth engaging a dog 12 on the frame.

By adjusting lever 10 the tension of belt 9 is regulated.

13 is a pinion on shaft 7. gages a gear 14: on shaft 15. This shaft has the two sprocket-wheels 16 16. On the opposite end of the machine is a shaft 17, having the two sprocket-wheels 18 18'. (See Fig. Extending around sprocket- wheels 16 and 1S and 16 and 18, respectively, are two sprocket- Secured to alternate links of the chains are the sections 20 of the carrier 3. The chains travel over tracks 22 on each side ,of. the table and the carrier rests directly iupon and travels over the track 22 along the longitudinal center of the table.

The particular construction of the carrier This pinion enitso'utside face 'a perforated plate 23. The' perforations are conical in shape (see Fig. 14)

ions 24, which are inserted through the back 5 of the plate before its attachment to the carrier-section. The attachment of the plates to the sections is by means of screws 25 or otherwise. By these means the carrier is rendered yielding, which is an obvious adico vantage, as it enables a considerable pressure to be exerted upon the work by the sanding gered fashion, and the screwsinserted be tween the cushions, as shown in Fig. 14.

I will now describe the mechanism for rais ing and lowering the table 2, so as to provide for operating upon difierent-thicknesses of material. 1 (See Fig. 1.)

26 is a bevel-gearon the driving-shaft 5,

Meshing with bevel-gear 26 is bevel-gear 27 on shaft 28. Bevel-gear 27 meshes with bevelgear 29 on sleeve .30, which is loose on the driving-shaft 5. The sleeve 30 has the clutch member 31. 32 is another sleeve loose on the driving-shaft 5. This sleeve has the pinion 33 and the clutch members 21 and 3 4.

34 is a clutch member on the driving-shaft 5.

35 is a lever pivoted'on the frame of the machine and by means of which sleeve 32 may be moved to throw into engagement either clutch members 31 and 31 or 34 and 34. In the former case pinion 33 will reshaft. In the latter case the pinion 33 will revolve in the same direction as the shaft.

36 is a shaft carrying the gear 37, meshing with pinion On the transverse shaft 36 is a bevel'gear 38, meshing with bevel-gear 39 on the upright shaft 40. The last-named bevel-gear also meshes with a bevel-gear 48 on the horizontal shaft 4] which has a bevel? gear 42, meshing with bevel-gear 43 on upright shaft 44. -At the other end of shaft 36 is a similar arrangement of bevel-gears for driving a third upright shaft 45 and a second horizontal shaft 46. on the other side of the machine, which in turn is connected with a fourth upright shaft'47 in the same manner as shaft 41 is connected with shaft 44. By engaging sleeves 30 and 32 the upright shafts 40, 44, 45, and 47 are all simultaneously revolved in one direction, and by engaging sleeve 32 simultaneously revolved in the opposite direction. These shafts are screw-threaded at their upper ends (seeFig. 5) and each engages a nut 49, connected to a lug 50, secured to one corner-of the table. The engagement of sleeves 30 and 32 will revolve the upright shafts, so as to raise the table, While the engagement of sleeve 32 and clutch member 34 will lower the table.

To provide for leveling the tablethat is,

adjusting each of' the four corners independently, so as to remedy any failure of the raising-and-lowerin g mechanism tov move the four corners to precisely the same height-I provide the following construction, (see Figs. 5 and 15:) On the nut 49 isa projection 51. The

lug 50 consists of a box 52, into which pro- .jection 51 extends. 53 shows bolts extendand 10.)

; block 61.

.at one side of the cut-away portion. "another angle-iron secured to a block 68, lo-

in g loosely through nut 49 and engaging box 52.. .A coil-spring 54 lies'between the top of the box and the projection 51. The screwshaft (say) 40 engages the nut 49 and extends within the spring 54 and through a plain orifice in the top of box 52. By loosening the bolts 53 spring 54 raises box 52 and the cor-. responding corner of the table. By tightening bolts 53 box 52 and the corresponding corner of the table are lowered.

I will now'proceed to describe the method of supporting, raising or lowering, and leveling the sanding-drums. (See Figs. 8, 9,

5.5 55 are pins on opposite sides of the frame, there being a pair for each drum. On these pins are; pivoted the arms 56 and 56', respectively. Intermediate of these ends of the arms are bearings from the drum-shaft "57 of one of the-drums 4. The outer end ofone of the arms forms the'journal for one end of a shaft 59, while. the outer end of the other arm has the box 58, in which the outer end ofthe shaft 59 is journaled. This shaft'has near each end an eccentric 60, which engages a of the machine and in guides 62 on the frame V 'of the machine, which permit the block to -volve in a direction opposite to that. of the move horizontally. On the end of the shaft 59 which projects into the box 58 is a wormwheel 59*,and extending throughthe box 58 and engaging the worm-wheel is the worm 63. In order to raise or lower any one drum, the worm 63 is turned, which turns the shaft 59.

By reason of the eccentric bearingof the shaft in block 61 and the capacity of the block to move laterally but not vertically the shaft 59 i is either raised or lowered. The pins 55 55 iare eccentrically shaped, and when, for example, pin 55 is turned .by hand the end of the drum supported by arm 56 is raised or lowered relatively to the other end.

In adjusting anydrnm the pins are turned until the two ends of the drum are on alevel, after which the worm is operated to raise or lower the entire drum to regulate thedepth of the. cut. "leveled independently of each other. and clutch member 34 these shafts are all The drums are raised and lowered and The particular construction of the drum will no'wbe described. (SeeFigs. 6, 6, and 7.)

64 represents hubs on the dru m-shaft, and 65 the periphery of the drum. v

' 66 is an angle-iron secured to the periphery cated within and toward the other side of the cut-away portion. 7

67 67 are an gle-irons secured to the angleirons' 66 66', respectively, by means of bolts extending through slots in angle-irons. 67 67 and entering angle-irons 66 66.

by means of a wrench or other suitable tool the angle-iron 67 is; moved laterally, which causes it, by reason of its slot-and-bolt c0n The block 6l'rests upon the frame nection with angle-iron 66, to also move toward the periphery, firmly securing that end of the sandpaper to the drum. The other end of the sandpaper is similarly secured between angle- irons 66 and 67.

The block 68 is yieldingly supported by being fastened at. each end to one end of a spring or tension device 68. Each spring is secured to a collar 70 on the drum-shaft, extends down around an eccentric 71, (on a shaft 72, having its bearings in the hubs of the drum,) and thence up and secured to the opposite side of collar 70. It is obvious that by rotating the shaft 72 and eccentric 71 from the position shown in Fig. 6 to that shown in Fig. 6 the spring or yielding support 68 and block 68 will be drawn into the position shown in Fig. 6 therebydrawing the sandpaper tightly around the drum.

73 is a collarfastened on each end of the shaft 72. Each spring is thus between one of these collars and the hub, and will thereby be prevented from springing laterally. Any

shrinkage of the sandpaper will increase the tension of the spring. Any stretching of the sandpaper will be taken up by the spring.

The following means are provided for giving to the drums during rotation a constant vibratory movement in the directionof their length, thereby compensating for any slight inequalities of the sandpaper and perfecting the finish of the work; on the shaft 28, which, as before described, is constantly rotated, is an eccentric 74. (See Figs. 11, 12, and 13.) This eccentric enters an orifice in a block 75, which is guided in abox 76, so as to be capable of a vertical movement therein. 77 is a lever or vibrator intermediately pivoted on a horizontal axis to a lug 78 on the frame of the machine andfastened at its lower end to the box 7 6. It will readily be understood that as the shaft 28 rotates the block will move up and down in the box 76, while the box 76 will be moved laterally, thereby vibrating the lever. On the end of one of the drum-shafts are three collars, the central one of which, 79, is loose on the shaft, while the outer ones 80 and 80 are tight on the shaft and move with it. 82 82 are projections on collar 79. 81 81 are the two forks of the upper end of lever 77. These forks extend one on each side of the drum-shaft, and each fork extends on each side of one of the projections 82. Each projection 82 has the two pins 83 extending parallel to the drum-shaft and toward the inclosed ends of the corresponding fork. Surrounding the pins are springs 84:, which bear against the projection on one side and the end of the fork on the other. As the lever 77 vibrates the vibratory movement is communicated through springs 84 to the collar 79,dru mshaft, and drum. The vibrating lever acting as it does upon the drums through the medium of springs instead of by a positive connection will impart to the drums a continuous longitudinal vibration,wherein the objectionable dwell at the end of movement of the drum in either direction, which occurs when a positive connection is made, is practically eliminated. In the drawings-this vibrating mechanism is applied to two of the drums, although it is obvious that it may be applied to one or all.

85 is a brush for dusting the work as it passes from under the sanding-drums. This brush is on a shaft 86, pivoted in arms 87 87, one on each side of the machine. 'lhese arms are secured to a shaft 88.

89 is a projection depending from one of the arms 87, engaging a set-screw 90, secured to the frame of the machine. By adjusting the nut-screw 90 the projection-is swung so as to turn the shaft 88 in one direction or the other, thereby swinging the arms 87 so as to elevate or depress the brush 85. (See Figs. 1 and 2.)

To drive the drums, I provide the pulleys 91 on the drum-shafts 57 and the idle pulleys 92 on shafts 55 55'. The driving-belt extends up around one pulley 91, thence down around one pulley 92, thence up around another pulley 91, thence down around the other pulley 92, and thence up and around the remaining pulley 91.

Itis obvious that the precise details in which my improvements have been embodied need not be adhered to, and I do not limit the invention to any details except those particularly enumerated in the claims.

I do not herein lay claim to the improved construction of drums and improved means for quickly removing the sheet of sandpaper. from and replacing it on the drum and retaining it on the drum under tension, which is described in the preceding specification and particularlyillustrated in Figs. 6, 6, and

7, as the same forms the subject-matter of a separate and divisional application filed by me December 23, 1899, Serial No. 741,370.

' Having now fully described my invention, what I claim, and desireto protect by Letters Patent, is-

1. In a machine of the character described, the combination with the sanding-drums, of a conveyer arranged to travel beneath said drums, said conveyer consisting of a base, a series of conical-shaped elastic cushions on the outside of said base and plates having orifices corresponding in number and arrangement to said cushions, said plates being secured to the base and said cushions projectin g through said orifices and above said plates, substantially as described.

2. In a machine of the character described, the combination with the sanding-drums, of sprocket-wheels arranged below said drums, an endless sprocket chain engaging said wheels, a series of sections secured to said chain, a series of conical-shaped elastic cushions on the outside of said sections, plates having orifices correspondingin number and arrangement to said cushions, said cushions being inserted into the orifices in said plates from the under face thereof, said plates being sdcuredto said sections, and means for a conveyer arranged to travel beneath said imparting a movement of rotation to one of said wheels, substantially as described.

3. In a machine of the character described, the combination with the sanding-drums, of a conveyer arranged to travel beneath said travels, a plurality of supports for said table, verticallyadjusting mechanism connected with all of said supports adapted when operated, to raise or lower all of said supports simultaneously, and independent leveling devices connectedwith each of said supports whereby each of said supports may be raised stantially as described. 4. I'n-a-machine'bfthe characterdescribed,

the com'bination' with' a driving-shaffl of a sleeve loose upon the shaft and having. a" clutch member, gearing between said shaft.

and 'sleevevwh'ereby saidsleeve is rotated'oppositely to the shaft, a clutch member on said sleeve, a clutch member on said'shaft, and a sleeve or clutch between said clutch members, said sleeve or clutch being movable latorally to engage eitherof said clutch members, a plurality of upright screw-shafts,.a

table for the work, lugs on said table connected respectively with said. screw-shafts,

whereby said table is raised or lowered by therotation of said screw-shafts in one di- 3 .a conveyer arranged to travel beneath said drums, a table upon which said conveyer travb els and vertically-adjusting mechanism ongaging said table and adapted to move said table vertically in a right line, substantially as described. I

6; In a machine of the characterdescribed, the combination, with the sanding-drums, of a conveyer arranged to travel beneath said drums, a table upon which said conveyer trav els, a plurality of upright screw-shafts arranged at each end of the length of the table and devices attached to said table and engaged by said screw-shafts whereby said tablem'ay be adjusted vertically, substantially as described.

7. In a machine of the character described, the combination, with the sanding-drums, of a conveyer arranged to travel beneath said drun1s,-a table upon which said'conveyer travels, a plurality of upright screw-shafts arranged at each end of the length of the table, lugs on said table, nuts on said screw-shaft, and springs interposed between said nuts and lugs, substantially as described.

8. In a machine of the character described,

the combination, with the sanding-drums, of

1 drums, a tableupon which saidconveyer travf els, a plurality of upright screw-shafts, lugs 'on said table, nuts on said screw-shaft, and i'springs and adjusting devices between said nuts and lugs, substantially as described.

d 'rums, a table upon which said conveyer 9. .In a machine of the character described,

ithe combination with a driving-shaft, of a sleeve loose upon the shaft and' having a iclutch member, gearing between said shaft and sleeve whereby said sleeve is rotated op- 5 positelyito the shaft, a clutch member on said @sl'eeve, a clutch member on said shaft, and a sleeve or clutch between said clutch momor lowered independently of the others, sub-J hers, said sleeve or clutch being" movable Plate rally to engage either of' said clutch mem- }bers, a plurality of upright screw-shafts, a table for the work, lugs on said table conf nected respectively with said screw shafts, 7 whereby said table is raised or lowered by the "rotation of said screw-shafts in. one direction or theother, and gearing between said sleeve or clutch and said upright shafts, whereby said table may be raised or lowered by throwing said sleeve or clutch into engagement 1 with one or the'other of said clutch members, fand" leveling devices for adjusting each of said lugs independently of the corresponding screw-shaft and of the other lugs, substantially as described. v

10. In amachin'eof thecharacter described, the combination with the conveyer for the work, of a table for supporting the conveyer,-

lugs on said table, a nut for each lug, bolts gconnecting said lug and nut whereby said lug may be vertically adj usted positively in substantially as described.

11. In a machine of the character described, the combination with the conveyer for the work, of a table for supporting the conveyer, lugs on said table, a device connected with and supporting each of said lugs, adjusting means for raising or lowering each of said lugswith respect to its corresponding supporting device, and vertical adjusting mechanism connected to and supporting all of said devices whereby all of said lugs may be simultaneously raised or lowered, substantially as described I 12. In a machine of the character described, the combination, with a sanding-drum, of the drum-shaft, of arms pivoted opposite each end of said drum-shaft, each =of said arms being pivoted at one end and having bearings between its ends for the reception ofone end of the drum-shaft, and vertically-adj usting mechanism connected with the outer ends IIO of both arms, whereby said shaft may be raised or lowered atboth ends simultaneously, substantially as described.

13. In a machine of the character described the combination, with a sanding-drum, of the drum-shaft, arms pivoted opposite each end of the drum-shaft, each of said arms being pivoted at one end and having bearings between its ends for the reception of one end of the drum -shaft, and vertically-adjusting mechanism connected with the outer ends of both arms, whereby said shaft may be raised or lowered at both ends simultaneously, and:

leveling means at the pivot of one of said arms for raising or lowering the pivot and thereby raising or lowering the corresponding end of the drum-shaft, substantially as described.

14. In a machine of the character described, the combination with a sanding-drum, of the drum-shaft, arms pivoted opposite each end of said drum-shaft, each of said arms being pivoted at one end and having bearings be-' tween its ends for the reception of one end of the drum-shaft, and vertically-adjusting mechanism connected with the outer ends of both arms, whereby said shaft may be raised pivoted at one end and having bearings between its end for the reception of one end of the dru m-shaft, a box on the outer end of one of said arms, a shaft one end in bearings in said box, the outer end of the other of said arms holding to the other end of said shaft, a block horizontally slidable upon the machine-frame, said block having an orifice, an eccentric on said shaft engaging said orifice and means to rotate said shaft, substantially as described.

16. In a machine of the character described, the combination,with the sanding-drum,of the drum-shaft, arms pivoted opposite each end of said drum-shaft, each of said arms being pivoted at one end and having bearings between its end for the reception of one end of the drum-shaft, a box on the outer end of one of said arms, a shaft one end in the bearings in said box, the outer end of the other of said arms holding the other end of said shaft, a block horizontally slidable upon the machineframe, said block having an orifice, an eccentric on said shaft engaging said orifice, a worm-wheel on said shaft within said box, and a worm engaging said Worm-wheel, substantially as described.

17. Inamachineofthecharacterdescribed, the combination, with a sanding-drum, of the drum-shaft, a pin opposite each end of said shaft, an arm pivoted to each pin, each arm having bearings between its ends for the reception of one end of the drum-shaft, one of said arms having an eccentric bearing upon its pin whereby it may be adjusted vertically independent of the other arm, and means for vertically adjusting both ends of said drum,

substantially as described.

18. In a machine of the character described, the combination with the sanding-drnm,of the drum-shaft, apin opposite each end of said shaft, an arm pivoted to each pin, each arm having bearings between its ends for the reception of one end of the drum-shaft, one of said arms having an eccentric bearing ,upon its pin whereby it may be adjusted vertically independent of the other end, a box on the outer end of one of said arms, a shaft one end in bearings in said box, the outer end of the other arm holding the other end of said shaft, a block resting on and horizontally slidable upon, the machine-frame, said block having an orifice, an eccentric on said shaft engagingsaid orifice,and means to rotate said shaft, substantially as described.

19. In a machine of the character described, the combination with the sanding-d rum,of the drum-shaft, a pin opposite each end of said shaft, an arm pivoted to each pin, each arm having bearings between its ends for the receplion of one end of the drum-shaft, one of said arms having an eccentric bearing upon its pin whereby it may be adjusted vertically independent of the other end,.a box on the outer end of one of said arms, a shaft, one end on bearings in said box, the outer end of the other arm holding the other end of said shaft, a block resting on and horizontally slidable upon, the machine-frame, said block having an orifice, an eccentric on said shaft engaging said orifice, a worm-wheel on said shaft within said box and a worm engaging said wormwheel, substantially as described.

20. In a machine of the character described, the combination with the sanding-drums, of a conveyer arranged to travel beneath said drnms,a table upon which said conveyer travels, a plurality of supports for said table, vertically-adjusting mechanism connected with all of said supports adapted to operate to raise or lower all of said supports simultaneously, independent leveling devices, connected with each of said supports whereby each of said supports maybe raised or lowered independently of the others, vertically-ad j usting mechanism for raising or lowering the drums, and leveling means for adjusting one.

end of each drum independently of the other end, substantially as described.

21. In a machine of the characterdescribed, the combination, with a sanding-drum, of the drum-shaft, a projection therefrom, capable of turning upon the shaft, but having no in dependent movement longitudinally thereof, a vibrator reciprocatinglongitudinally of the shaft, a spring arranged parallel with the shaft and between said projection and vibrator, and means for operating said vibrator, substantially as described.

v said vibrator, substantially as described,

the combination, with a sanding-drum, of al vibrator reciprocating longitudinally of the shaft, and a spring arranged longitudinally collar loose thereupon, and between the fixed and the inolosed ends .of the forks and sur ing saidvibrator longitudinally of the shaft,

' veyer, and a table supportinguthe conveyor,

Of ;a brush, a shaft carrying same, arms piv- V the'shaft, and interposed between the shaft 2 5 1 beingpivoted between its ends on an axis transverse to the drum-axis, a box to which i the'other end of said vibrator is secured, a

6 p v wear/ism 22in a machine of the character described} ofthe shaft and interposed between theshaft and the vibrator, and means for operating 23. In a machine of the character described, the combination with a sanding-drum, of the drum-shaft, two fixed collars thereupon, a

collars, projections therefrom, pins extending from both sides of each projectionand longitudinally of the shaft, a vibrator having a forked end, each fork having an inclosed end, springs interposed between, the projections rounding said pins, and means for reciprocate substantially as described.

24. In a machine of the character described, the combination, with a sanding-drum, of a vibrator, a spring arranged longitudinally of and one end of the vibrator, said vibrator block adapted to slide vertically in said box,

a driving-shaft, and an eccentric thereupon, j

25. In a machineof the character described, i

from both sides of each projection and longitudinally of the shaft, a vibrator-having a fork ed end,each fork having an inclosed end, springs interposed between the projections and the inclosed ends Of the forks and surrounding said pins, said vibrator being pivoted between its ends: on an axis transverse to the drum-shaft, a box to which the other end of said'vibrator is secured, a block ad apted {to slide vertically in said box, a drivingshaft, and an eccentric thereupon, said block having an orifice which saideccentricen gages, substantiallyas described. M e Q 26. In a machine of the character-described, the combination, with the drums, the conotedthereto, ashaftto which said arms are searms, and an adjusting device engaging said projection and the frame ofthe machine, substantially as described. v V

V In testimony of which invention I have hereunto set my hand, at Philadelphia, Pennsylvania, on this 22d dayof November, 1899. JAMES L. PERRY.

Witnesses: 1

FRANK S. BUSSER, 'M. M. HAMILTON.

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