US895401A

US895401A - Machine for dressing blocks of wood to thickness.

Info

Publication number: US895401A
Application number: US35708207A
Authority: US
Inventors: James E Hamilton; Julius Hamacheck
Original assignee: Hamilton Manufacturing Co
Current assignee: Hamilton Manufacturing Co
Priority date: 1907-02-12
Filing date: 1907-02-12
Publication date: 1908-08-04
Anticipated expiration: 1925-08-04

Description

3 No. 895,401 7 v PATENTEI) AUG.4,1908. 7 J. E. HAMILTON & J. HAMAGHECK.

MACHINE FOR DRESSING BLOCKS 0F woon T0 THICKNESS.

APPLICATION TILED FEB. 12, 1907.

'! SHEETS-SHEET I.

895A01 PATENTBD AUG. 4,1908. J. E. HAMILTON & LHAMACHECK. MACHINE FOR DRESSING BLOCKS 0P WOOD TO THICKNESS.

1 snnms-annr 2.

E e/afar):- Jimgw f z/wizzvz JZZYZZJJ flayed/zeal? APPLICATION FILED FEB. 12, 1907.

FM/MM No. 895,401. PATENTBD AUG. 4, 1908. J. B. HAMILTON & J. HAMAGHECK.

MACHINE FOR DRESSING BLOCKS 0F WOOD T0 THICKNESS.

Rim-"mien mum rm. 2 1901.

7 l 1 sums-sum a.

" No. 895,401, v PATENTED AUGQi, I903.

' v J, E. HAMILTON & J. HAMACHECK.

' MACHINE FOR DRESSING BLOCKS 0F WOOD T0 THICKNESS.

' APPLICATION FILED 113.12. 1907.

v 7 SHEETS'SHBET 4.

I PATENTED'AUG. 4, 1908. 7 I J. E. HAMILTON & J. HAMAGHEGK. .MAGHINB FOR DRESSING BLOCKS OF WOOD'TO THICKNESS.

APPLICATION FILED IE3. 12, 1907.

7 SHEETS-SHEET 5.

. .nqfsssol'F w PATBNTED AUG. .4,19.08

H J. B. HAMILTON & J. HAMACHEGK.

MACHINE FOR DRESSING BLOCKS OF WOOD o THICKNESS.

ARPLICATIQN FILED FEB. 12, 190].

,B y I 0% J. E. HAMI LTON dz J. HAMACHECK. MACHINE FOR DRESSING BLOCKS OF WOOD TO THICKKESS.

APPLICATION FILED FEB. 12. 1907.

No.895,401. r 'PA'I'ENTED AUG .4,190 8..

T SEISTS-SHEET I.

aims-to;

Rotary Setter? ear. Y

JAMES E. HAMILTON, OF TWO RIVERS, AND JULIUS 'lL-UIACHIZCK, OF MANITOWOG,

\YISCONSIk', ASSIGXORS TO THE HAMILTON LIAXUFACTURIXG COMPANY, OF TWO RIVERS, \iiISCOXSIX, A CORPORATION OF WISCONSIN.

FOR DRESSING BLOCKS OF WOOD TO THICKNESS.

Specification of Letters Patent.

Patented Aug. 4, 1908.

l 1 Application filed February 12, 1907. Serial No. 857,08&

T all whom it may concern:

Be itknown that we, J .mns E. HAMILTON and JULIUS Hauacmzcx, citizens of the Unit-ed States, and residents of Two Rivers,

{ Manitowoc county, \Yisconsin, and Manitowoc, Manitowoe county, I'Visconsin, respectively, have invented certain new and :useful Improvements in Machines for Dressing Blocks of "ood to Thickness, of which the following is a specification.

This invention relates to machines for dressing blocks of wood to thickness and relates particularly to machines for dressing blocks to thickness which are to be used for 5 making what are lin0\\' l1 as end-wood type, said machine being commonly known as type-high machines.

A machine of'the general type to which our invention relates, is shown and described in U. S. Letters Patent No. 833,163, dated October 16, 1906.

Among the objects of the present invention are the following: T 0 provide an improved pressure device for applying pressure to blocks of wood supported upon the carriage of the machine while being presented to the cutter, whereby pres ure will be exerted thereon at points across the entire width thereof and closely adjacent to the cutter; to provide for independently adjusting the pressure at any point; and to provide for entirely removing the pressure at any point; to provide an improved feed mechanism for the carriage whereby the feed will be automatically reversed when said carriage reaches the rearward limit of its movementand said carriage returned and stopped at its forward or initial position; and to provide manually operated means for throwing in the feed mechanism when itis desired to again advance said carriage; to provide an improved clamping dog for securing the blocks of wood upon the .carriage, whereby setting up said dogs will operate to draw said blocks into firm contact with the surface of the carriage; to provide improved means in connection with a. circular cutter rotating in a plane parallel with the surface of the carriage for securing desired clearance at the rear side of said cutter; and to provide an improved support for the machine frame. whereby it may readily accommodate itself to irregmlaritics in the floor or foundation without springing said frame or stationary bed.

To effect the objects of our invention, our

improved machine comprises the various features, combinations of features and de tails of construction hereinafter described and claimed.

In the accompanying drawings, in which a machine of our invent ion is In lly illustrated, Figure l is a left hand side view of a machine of our invention, the pressure device bc-im raised and a portion of the frame or fixed bed being broken away. Fig. 2 is a top plan view of our improved machine. Fig. 3 is an enlarged sectional elevation thereof on the line 33 of Fig. 1. Fig. 3" is an exaggerated diagrammatic view to emphasize the dish of the bed and the tilt of the cutter. Fig. 4 is an enlarged sectional view of the cutter and cutter head. Figs. 3, 7 and S are enlarged detail views of the pressure devices, Figs. 5 and 6 being similar sectional views showing the pressure roller in inoperative adjustment and operative adjustment, respectively. Figs. 9, 10 and 11 are enlarged views of the device for shipping the belts controlling the feed mechanism for the carriage, Fig. 9 being a sectional view substantially on the line 9-9 of Fig. 2. Figs. 12, I3 and 14 are onlarged detail views of the dogs for clamping the work to the carriage. Figs. 15 and 16 are enlarged detail views showing the dogs on the carriage which control the shipping mechanism for the feed belts; and Fig. 17 is a view similar to Fig. 16, showing the hinged portion of the rear dog swung rearwardlv as the movement of the carriage is reversed at the rear end of its stroke.

As regards its general features, our improved machine may be of any usual or desired construction, comprising a stationary frame or bed A, a carriage B mounted in suitable guides thereon so as to be movable lengthwise thereof in both directions, a cut ter head C, a cutter I) secured thereto and a cutter arbor E.

The machine is shown as operating on a block of wood F, which is secured to the carriage B by suitable clamps or dogs.

'lo etl'ect the object of our invention, as it relates to improved means for supporting the frame thereof, we employ, instead of four rigid legs, as heretofore, two rigid legs 1 at one end of the' machine, as shown the rear end, and at the other or forward end of the machine a single centrally located leg comprising a section 2 rigidly secured to the bed Y cured to the floor or-foundation, said base being provldcd in its upper surface with a .roundcd reces t adapted to receive the threaded to the end of said bolt.

rounded lower end 5 of the upper section 2, the curve .of the recess 4 being of greater radius than the curve. of the rounded lower end of the rigid section 2, thus providing for a rocking movement of said rigid section 2 in the base 3. The base 3 of said leg is secured to the rigid section 2 thereof, so as to permit free relative movement thereof, by means of a bolt 6,.the under side of the head of which is rounded and is adapted to engage a corresponding rounded socket 7 on said base 3. The shank of said bolt extends through registering holes 8 in the

sections

2 and 3 of said leg, said holes being somewhat larger than said bolt. Said bolt 6 is secured in position by means of a nut threaded to the end thereof, and desired flexibility is imparted to the joint connecting the sections of said log by means of acoiled spring 9 inserted between the end of the section 2 of the leg and a nut \Vith this construction, it is obvious that, while the bed or frame A of the machine will be rigidly supported, it will, at the same time, be free to adaptitself without springing to irregularities in the foundation, whether permanent or temporary, thus insuring absolutely uniform work at all times.

To effect the object of our invention, as it relates to securing the desired clearance at the rear side of the cutter, the cutter arbor E, instead of being set at right angles to the upper surface of the carriage B, is set at an angle, with its upper end slightly inclined towards the front end of the machine. \Vith this construction, the front side or edge of the cutter D will obviously be lower than the rear side or edge thereof, the difference in height depending upon the inclination of said cutter arbor E. In practice, a desirable relation is to adjust said cutter so that the front edge thereof will be approximately 5/32 of an inch lower than the rear edge thereof.

To better illustrate the inclination of the cutter D, to provide the necessary clearance atthe rear side thereof, and the corresponding dish of the carriage, in order that the dopressed front edge of the cutter shall run parallel with the dished transverse surface of said carriage, these features are shown on an enlarged and greatly exaggerated scale in Figs. 3 and 4. in Fig. 1, at represents the longitudinal surface line of the finished work.

In order that the depressed front edge or side of the cutter D will run parallel with the surface of the carriage B and thus dress the blocks of wood F supported on said carriage to uniform thickness throughout the upper surface of the carriageis dished transversely, as clearly shown, on a somewhat exaggerated scale, at 10, Fig. 3.

In practice the necessary dish to the surface of the carriage B can be secured or provided by fastening to the cutter head C a. circular grinding vvacel of the same diameter as the cutter D designed to be used on the machine. By then adjusting the cutter arbor E at its designed operative inclination, rotating the arbor shaft and moving the carriage B back and forth beneath said cutter, until the grinding wheel has ground itself to a bearing entirely across said. carriage, the.

proper dish will l)Q'-I l)ifill18tl, so that when the cutter D is secured to the cutter head C in place of the grin g wheel, its front side or edge will run parallel with the dished upper surface 10 of the carriage B and, when a block F is secured upon the carriageB with its under surface conformed to the dish of said carriage, and is presented to said cutter, said cutter will operate to' cut the same to uniform thickness throughout.

The bearings for the cutten-arbor E are formed in a slide 11, see particularly Figs. 2 and 4, mounted so as to be movable towards and from the carriage D in suitable guides or ways formed in a head supported upon standards 12 rigidly secured to the bed or frame' A of the machine.

' To provide for adjusting and truing up the cutter arbor E relatively to the surf ace of the carriage B, the head carrying the slide 11, instead of being secured to the standards 12 in fixed adjustment, comprises

members

13 and 14, of which the member 13 is pivoted at its lower end to said standards 12, by means of stud bolts 15, see Fig. 1, which form a transverse axis, so that the upper end of said memher 3 may be swung either forwards or backmeans of a stud bolt 16 so that its upper end maybe swung transversely of the machine in either direction- Our improved machine also comprises means for adjusting said

members

13 and 14 pivotally and for sccuring the same in desired pivotal adjustment. In the preferable construction shown. said

members

13 and 14 are adapted to be adjusted and secured in position in the foil-:nving manner:

Inserted through suitable holes or openings in said members 1 3 and 14 adjacent to their upper ends and preferably adjacent to opposite sides thcreof. is a bolt 17, threaded to which are nuts 1S by means of which the member 14 may be rigidly clamped to the member 13. To provide for adjusting the member 1-1 pivots lv. the hole in the member 13, through winch the bolt 17 passes, is elongated transversely about the stud bolt 16 as a center.

To provide for adjusting the member 13 pivotally, the bolts 17 are extended beyond the nuts 18, as shown at 19, the ends thereof passing freely through suitable holes or openings formed in a game member 20 w iich am; lutter,

sides of the machine. is shown, also, the

extensions 1.) of the bolts 13 are reduced in size below the bottoms of the threads on said bolts 17, and threaded thereto at opposite sides of the central web of the frame member 20 are nuts '21, by screwing up one or the other of which, the upper end of the member 13maybe swungineitherdireetion,asdesired.

The member 13 is adapted to be adjusted pivotally by means of thrust screws .22 which are threaded into rigid portions of the member 13, see Fig. and the heads of which bear againstopposite edges of the member 11.

/ .holes 01' openings in the standards 12 and are threaded into rigid portions of said members 13. To provide for desired'pivota-l adjust ment of said member 13, the holes in tli'F standards 12, through which said clamping bolts 23 extend, are elongated, as best seen in Figs. 2 and 4.

The slide 11 on which the bear ng for the cutter arbor is formed is adapted to be adjusted towards and from the carriage B by means of a screw 24, threaded to a nut 25 rigidly secured to said slide, said screw being secured against longitudinal movement in a lug or flange 20 on the memoer 1-1 of the head carrying said slide 11. The upper end of the screw 25 is squared to receive a socketwreuch.

The carriage B is ada )ted to be moved or fed lengthwise of the bed or frame A by means of a feed screw .27, see Figs. 1 and :2.

To effect the objects of our invention as it relates to an improved feed mechanism whereby the feed will be automatically reversed when the carriage B reaches the rearward limit of its movement and returned and stopped at its extreme forward or initial po-- sition, the construction of our improved machine is as follows:

ltevolubly mounted in suitable bearings at the rear end of the machine is a cross sha ft 28, a miter gear secured to rotate with which meshes with a miter gear secured to rotate with the feed shaft 27, see Figs. 1 and 2. Secured to the cross shaft 23 is a driving pulley 2t) and revolubly mounted upon saidsha ft at op )osite sides of said fast pulley 20 are loose pu leys 30 and 31. Two belts, one open and the other crossed, are adapted to run on the

loose pulleys

30 and 31 andto be shifted alternately to the tight pulley '20, thus through the medium of the miter gears secured to the cross shaft 28 and to the feed screw 27, oper- 36, through suitable guide openings in the end of which the drivim belts pass. Mounted in suitable guide. bcaringson the upper side of the bracket 32 is a slide 37 formed in which are cam slots 38 and30, respectively, which are adapted to be engaged by suitable. projections on the shipping levers 35 and 36. As

shown, said pro ectionsconsist of rollers -10 and -11 revolubly mounted on studs secured in said shipping levers 35-and 36, respectively. To provide for desired pivotal movement of the shi )ping levers 35 and 36, suitable slots -12 and 13 are formed in the bracket 32 through which the cam rollers -10 and -11 and the studs on which they are mounted extend. As shown, the slots -12 and -13 are engaged by reduced downward extensions of the cam rollers -10 and 41.

The

cam slots

38 and 30 comprise off-set, straightportions -1-1 and 15 and 44 and 45, respectively, which are connected by means of

inclined sections

40 and 17 and 46 and 47, respectively.

The relation of parts is such that, when the cam roller -10 on the shipping lever 35 is in engagement with the straight section 45 of the cam slot 38, the belt controlled by the shipping lever 35 will be shifted to the loose pulley 30 and when in engagement with the straight section 4-1 of said cam slot 38, that said belt will be shifted to the tight pulley 29, the inclined sections 46 and -17 of said cam slot operating to guide said cam roller -10 from one straight section to the other of said cam slot, depending upon the direction of movement of the slide 37. Likewise, the relation is such that, when the cam roller 41 is in engagement with the straight sections 45 of the cam slot 30, the belt controlled by the shipping lever 36 will be shifted to the tight pulley 20 and when in engagement with the straight section 1-1 of the cam slot 39, said belt will be shifted to the loose pulley 31, the inclined sections -16 and -17 operating to guide said cam roller from one of said straight sections to the other, depending upon the direction of nnivement of the slide 37.

The inclined sections -16, -17 and 46 are substantially parallel and are located in the same positions lengthwise of the'slide 37. The cam section -17, however, begins ata. point rearward from the rear ends of sections 46, -10 and 17, so that when the slide 37 is moved rearwardly, the cam roller -11 will not come into contact therewith until the section 17 has brought the cam roller 40 into engagement with the straight section 4:) of the rain slot 38 and thus shifted the belt controlled by the shipping lever 35 to the loose pulley 30. Thus, with the cam rollers -10 and -11 in engagement, respectively, with the

straight sections

15 and 15 of said cam slots, in

which positions the belt controlled by the lever .36 will be on'the tight pulley 29, in which relation the feed scrcw will be rotated in the proper direction to feed the carriage B rearwardly under the cutter D. When mm'ement is imparted to the slide 37 rearwanlly, the inclined sections .46 and 46 of said cam slots will operate to move the shipping levers and 36 pivotally, so as to shift the belts controlled thereby, respective-3y, to the fast pulley 29 and the loose puiiey 31, which will operate in an obvious manner to reverse the direction of feed and to return the carriage B to its forward or initial position, in which direction it will continue to move until the slide 37 is again moved forwardly to cause the inclined section 47 0f the cam slot 38 to engage the cam roller and thus move the shipping lever 35 pivotally to shift the belt controlled thereby to the loose pulley 30, which will be effected by suitable mechanism when the carriage B reaches the forward limit of its movement or its initial position. As previously stated, however, the relation is such that the cam rolier -11 will not come into contact with the inclined section -t'i'of its cam slot until after the cam roller 40 has passed into engagement with the straight section of its cam slot. Thus. both belts will be running on the loose puileys and the carriage B will come to rest and remain stationary until the shipping le ver 36 is moved pivotally to cause the belt controlled thereby to run upon the tight pulley '29, which is designed to be done manualiy by suitable means in connection with the means for imparting movement to the slide 37.

A spring 48, see Fig. 9, operates to maintain the shipping lever 36 normally in position so that the belt controlled thereby will run on the loose pulley 31.

Movement is adapted to be imparted to the slide 37 to operate the shipping levers 35 and 30b means of suitable operative connection with the carriage B, as follows: Revolubly mounted in a suitable bearing on the bracket 32 is a stub shaft 49 secured to the upper end of which is a gear 50 the teeth of which mesh with a rack 51 formed on the slide 37 and secured to the lower end of said stub shaft is a )inion 52 the teeth of which mesh with teet 1 formed on a rack bar 54, which. shown, is rigidly secured to a rod 55 which is fitted to and longitudinally movable in suitable fixed bearings formed in hearing blocks or bosses 56 and 57 on the bed or frame of the machine. .ltigidly secured adjacent to opposite ends of the carriage B, see particularly Figs. 2, 15 and 16, are

dogs

58 and 59, which are adapted to strike stops on the shipping rod 55 as the carriage B moves in opposite directionsand to impart movement to said shipping rod and through the described connections to the cam slide 37 of the belt shipping device to either reverse the feed or-to throw the feed out of operation, as heretofore described. shown, said stops consist of

lovers

60 and 61 pivoted to the bed or frame of the machine, formed in the upper ends of which are slots 62 and G3, throughlwhich the rod 55 extends,

said shipping rod 55 being connected to said ower end thereof will be free to swing rearwardly, butwill be held against forward pivotal movement by the end of said dog 59. The object of this construction is to rovide for the plate 66 releasing itself from the stop 61 in case the momentum' of the carriage should carry said plate over the end of the sto 61, which, with a rigid dog, would cause sai dog and stop to wedge upon each other and possibly result in breaking one or both thereof. The front dog 5Sis substantially the same in construction as the rear dog 59, excepting that, as shown, it does not comprise the hinged plate 66, such plate not being necessary, for the reason that the parts are so adjusted that the carriage will come to rest before said dog passes the stop 60. As previously explained, the relation is such that when the dog 59 strikes the stop 61, as the carriage B is fed rearwardly under the cutter D. said dog will move the stop 61, and through it the rod 55 and the slide 37 a suflicient distance to disengage the cam IOlluS 40 and -11 on the shipping levers 35 and 36 from the

sections

45 and 45 of the cam slots 38 and 3'.) and to bring them into engagement first with the

inclined sections

46, 46 and then'with the

sections

44 and 44 thereof, thusreversing the feed and causing the carriage to move toward the front end of the machine. As said carriage approaches its extreme forward or initial )osition, the dog 58 strikes the stop (it), the re lation being such that said stop will be moved thereby a stiflicient distance to cause the inclined section 47 of the cam set 38 to engage the cam roller 40 and thus shift the belt controlled by the shipping lever 35 from the tight pulley 29 to the loose pulley 30. As previously stated, this will occur before the inclined section 47 of the cam slot 39 engages the cam roller 41 on the shipping lever 36. Both belts will thus be running on the loose pulleys, thus stopping the feed and allowing the carriage B to come to rest in its extreme forward or initial position in the manner desired.

feed, the rod 55 is drawn forward by means 36 pivotally to shift the belt centre t grooves 73 formed in said screws.

ends of said screws are squared to recelve a 60 and still permit sait Planer-:1.

of a hand lever 67 on the front stop lever 60 a sufficient distance to cause the inclined sect-ions 47 of the cam slot 39 toengage the cam roller 41, thereby moving the ship )ing lever lled thereby to the t ght pulley 29, thus throwing in the feed. This cycle is repeated each time a new block to be dressed-is placed upon the carriage B.

As regards the improved dogs for securing the blocks F upon the carriage B, the construction of the machine is as follows, see particularly Figs. 2, l2, l3 and 14. Formed in the upper surface of the carriage B are transverse T-slots 6S fitted to which are the heads 69 of clamps 70. Said clamps 7 O are arranged in pairs and are adjustable towards and from each other by means of screws 71, each of which comprises right and left hand sections which are res ectivcly threaded to corres )ondingly threat ed holes or openings formeil in the head 69 of each )air of clamps 70. The screws 71 are securet against longitudinal movement by means of yokes 72 secured to the carriage B which engage The outer wrench.

Formed on the portions of the clamps 70 which project above the surface of the. car-.

r1age=B,-;are inclined guideways 74 to which are fitedllanges 75 on 'aws 76, said guideways f being outwardly and lo\\'nwa1' (lly inclined andg said aws being shorter than the '35 height ofthe clamps 70 above the carriage B, so that, when said jaws 76 are subjected to an outward pressure they will be forced downwardly along the guides 74 towards the surface of the carriage B. Springs 77 in- 40 serted beneath the jaws 76 operate to maintain said jaws 76 normally at the upward limit of their movement and )lates 78 secured to the upper surface of the clamps 70 and which extend over portions of the jaws 76, limit the movement of said jaws under the influence of said springs. The inner ends of the jaws 76 which are designed to engage the edges ofthe blocks of wood are preferably inclmed outwardly and downwardly, as

shown at 79, leaving the upper edges thereof comparatively sharp. Thus, as said clamps are set up, the tendency of the jaws 76 to move downwardly will operate in an obvious manner to draw the block engaged thereby into lirm engagement with the surface of the carriage B. Preferably, also, the normal position of the aws 76 is such that they will engage the edges of the blocks as closely as practicable to the u )peredges of said blocks l clamps to pass beneath the cutter D. \Vith this relation, it is obvious, that the pressure of said clam )5, being applied above the central line of the thickness thereof, will tend to spring said blocks Lil"; v

'4 Fioiarg-"Gettaif I Disk. a i

downwardly at their centers into contact with the bed of the carriage B.

. Ourimproved pressure device for applying pressure to the )locks F as they are pre sentcd to the cutter D, in order to force the same down upon thecarriage and to cause.

ranged transversely of the machine substantially on the arc of a circle concentric with the cutter D and as closely adjacent as practicable to said cutter, in order that the pressure may be applied to said blocks as close as possible to the points where the blocks F are presented to the cutter D.

In the preferable construction shown, the rollers 80 are supported in a frame 81 which extends over the carriage B. Said frame 81 is supported upon brackets 82 and 83 secured 85 to the frame or bed A of the machine and which extend upwards into proper position. Said frame 81 may be secured to said brackets 82 and 83 in any desired manner. In the preferable construction shown, said frame is ringed to one of said brackets, as shown the bracket 82, and is ada ted to be rigidl secured to the bracket 83 y means 'of eye l iolts S4 pivoted to the bracket 83 and "adapted as be swung into engagement with suitable slots in the end of said frame, nuts threaded to the ends of said eye bolts providin incans for clampin said frame to said racket 83. \Vith thls construction, provision is made for disengaging said frame 81 from the bracket S3 and swinging the same 11 to the position shown in Fig. 1, thus rendering the arts beneath and at the under side of said rame accessible.

The rollers 80 are mounted in the frame 81 so as to exert a desired pressure on the blocks F supported on the carriage B of t-he' 1nachine, in the following manner:- Secured in the frame 81 are sleeves85 fitted to which, so as to be movable lengthwise therein, are rods S6 rovided with lugs 87 at their lower ends w rich project below, the sleeves 85 and in which the rollers 80 are mounted by means of ins 88.

carried thereby are held yieldingly, toward the carriage B by means of suitable springs applied thereto, as shown, by coil springs 89 inserted between the bottoms of holestor recesses 90 formed in the upper ends of the rods 86 and the inner ends of sleeves or buslrings 91 threaded through caps 92 secured to the upper ends of the sleeves 85. By screwing the sleeves or bushings 91 in or out, the

tension of the springs SQ-may be increased or decreased, thus providingmeans for regulating the pressure of the rollbrs SO.

The approach of the rollers 80 tothe cari The rods 86 and wit 1 them the rollers 80 115 riage B is limited by means of rods 93thieaded into'the rods 86, said rods 93, as shown, being threaded into the bottoms of the holes or recesses 90 which receive the coil springs -89. The upper ends of the rods 93 project above the s eeves or bushings 91 and Un ad ed thereto are nuts 94, contact of wlnch w th the upper ends of the sleeves or bushiu s 91 will operate, in an obvious manner, to imitthe downward movement of the rollers S0 under the influence of the springs 89. Also, by screwing said nuts 94 up or down on the rods 93, the extreme depressed positions of the rollers can be conveniently adjusted.

As preferably constructed, the threads on the sleeves or bushings 91 and on the rods 93 and nuts 94 are of the same pitch, say ten threads to the inch. Thus, by turning the bushings 91 and the nuts 94 the same distance in the same direction, the tension of the s )rings 89 may be adjusted without varying t 1e adjustment of the pressure rollers 80 relatively to the carriage.

Set screws 95, threaded through the ca s 92 are provided to secure the sleeves or bus 1- ings 91 in adjusted positions. Means are also provided for securing the nuts 94 in fixed relation to the sleeves or bushings 91, consisting, as shown, of pins 96 adapted to be inserted through registering holes in the nuts 94 and in flanges formed on the upper ends of the sleeves or bushings 91.

In case it is desired to vary the extreme de )ressed positions of any of the pressure rol ers 80, this can be effected by removing the pin 96 of the pressure device, which it is desired to vary, and turning the nut 94 there of either up or down, as it is desired to lower or raise said pressure roller.

Our improved pressure device also comprises means whereb the pressure rolleis 80 may be independent raised and secured in raised positions, so tl iat they will not bear upon the blocks F as said blocks pass beneath them. The means for this purpose, see particularly Figs. 5 to 8, consist of levers 9T, yokes 93 011 the ends of which embrace flattened surfaces 99 on ,the nuts 94, said yokes being pivoted to said nuts at a distance from their outer ends greater than the distance from their pivotal points to the lower sides of said nuts, equal to the distance which it is desired to raise said pressure rollers 80.

The ends of the yokes 9S bear upon the upper surfaces of the flanges on the sleeves or bushings 91, so that, by turning said levels 97 into vertical position, as best shown in Fig, 7, the nuts 94 and with them, through their described connections therewith, the pressure rollers 80 may be raised out of operative position. The yokes 98 are narrower than the thickness of the nuts 94, so that when the levers 97 are turned into horizontal positions, as best shown in Fig. 6, the nuts 94 will rest in contac with the upper ends of the sleeves or bushings 91, thus permitting" the pressure rollers 80 to assume their operative positions. I f

The rods 86 are secured/against rotation in the sleevesS-S, with the pressure rollers 80 in alinement with the direction of movement of the carriage B in any suitable manner, as shown, by screws 100 threaded through said sleeves, the inner ends, 101 of which are turned down to form pins and which project into. slots 102 formed in the rods 86. Being arranged on the arc of a circle, it is obvious that, to bring the different pressure rollers 80 in a-linement with the direction of movement of the carriage, it will be necessary to form the slots or grooves 102 at different points circumferential of the rods 86.

As shown, the sleeves are secured in the frame 81 in the following manner:-1 or1ned on the sleeves 85 adjacent to their lower ends are

flanges

103, 104, which are adapted to embrace the edges of a slot 105 formed in the frame 81, the edges of said slot 105 bearing against the sides of the sleeves at the bottoms of the grooves formed by said

flanges

103, 104, and the bearing surfa es on said sleeves being of con siderable length to prcvent turning of said sleeves in saidslot. To )rovide for assembling said sleeves S5 in the name 81, said frame is made in two so iarate sections secured together by means of bolts 100, the slot 105 bring formed partly in one section and )artly in the other, so that by separating the sections of said frame, the slot 105 will be opened to permit the insertion or removal of the sleeves 85.

By making the slot 105 slightly narrower, when com iletcly closed, than thedimension of the s eevcs S5 at the bottom of the grooves formed by the

flanges

103, 104, it is obvious that said sleeves will be clamped between the edges of the slots 105 formed in different sections of the frame 81, thus )1() vidiug convenient means for SOCUlillgiilOlll in adjusted position.

W'th the described construction, it isobvious that the. pressure rollers will be independent of each other both as regards operation and adjustment.

We claim:

1. In a machine of the type described, the combination of a carriage the surface of which is dished transversely and a cutter revolubly mounted above said carriage, said cutter being set with its front side lower than its rear side.

2. In a machine of the type described, the combination of a carriage the surface of which is dished transversely, a cutter revolubly mounted above said carriage, said cutter being set with its front side lower than its rear side, and a pressure device adapted to apply pressure to the work supported on said carriage.

Rotary Setter, I

i Disk. l y

4 its rear side and means for adj 3. In a machine of the type described, the combination of a carriage the surface of which is dished transversely, a cutter revolubly mounted above said carriage, said cutter being set with its front side lower than its rear side, and a pressure device for applying 5 pressure to the work supported on the carriage, said pressure device comprising a series of pressure rollers mounted substantially on the arc of a circle concentric with the cut ter and closely adjacent to the front side thereof.

4. In a machine of the type described, the combination of a carriage the surface of which is dished transversely, a cutter revolubly mounted above said carriage, said cutter being set with its front side lower than its rear side, and pressure device adapted to apply pressure to the work supported on the carriage, said pressure device comprising a series of independently supported rollers mounted substantially on the are of a circle concentric with the cutter and closely adjacent to the front side thereof.

5. In a machine of the type described, the combination of a. carriage the surface of which is dished transversely, a cutter revolubly mounted above said carriage, said cutter being set with its front side lower than its rear side, and a pressure device adapted to apply pressure to the work supported on the carriage, said pressure device comprising a series of independently supported rollers mounted substantially on the arc of a circle concentric with the cutter and closely adjacent to the front side thereof, and means for independentlv adjusting the pressure of said rollers.

6. In a. machine of the type described, the combination of a carriage the surface of which is dished transvelsely, a cutter revolubl mounted above said carriage, said cutter )eing set with its front side lower than 'ust-ing the set of said cutter to vary the heig it of the frontside thereof relatively to its rear side.

7. In a. machine of the type described, the combination of a carriage, a cutter revolubly mounted above said carriage and a pres ure device, said pressure device comprismga series of pres ure rollers mounted substantially on the arc of a circle concentric with said cutter and closely adjacent to the front side thereof.

8. In a machine of the type described, the combination of a carriage, a cutter revolubly mounted above said carriage and a pressure device, said pressure device comprising a se ries of independent pressure rollers mounted subst-antia v on the arc of circle concentric with said cutter and closely adjacent to the front side thereof.

9. In a. machine of the type described, the

combination of a carriage, a cutter revolubly mounted above said carriage and a pressure device comprising a series of independentpressure rollers-mounted substantially on the arcof a circle concentric with said cutter and closely adjacent to the front side thereof, and means for independently adjusting the pressure of said rollers.

10. In a machine of the type described, the combination of a carriage, a cutter revolubly mounted above said carriage. a pres ure device comprising a series of inde )endent pressure rollers mounted substanti; ly on the an: of a circle concentric with said cutter and closely adjacent to the front side thereof, and means for separately moving said rollers into and supporting them in inoperative positions.

11. A rotary disk ilaner comprising a fixed bed and supports ti comprising asection secured to the bed and a base )late, the lower end of the leg section secured to the bed being rounded and engaging a corresponding recess in said base plate.

12. A rotary disk )lanercomprisingafixed bed and supports therefor comprising a leg I l l l a base )late, the lower end of the leg section secured to the bed being rounded and engaging a corresponding recess in said base plate, the recess in said base plate being of greater radius than the rounded end of said leg section secured to the bed.

13. A rotary disk planer comprising a fixed bed and supports therefor comprising a leg comprising a section secured to the bed and a base date, the lower end of the leg section secured to the bed being rounded and engaging a corresponding recess in said base plate. and means for flexibly connecting the sec tions of said leg to each other.

14. A rotary disk planer comprisinga fixed bed and supports therefor comprising a leg comprising a section secured to the bed and a base )late, the lower end of the leg section secured to the bed being rounded and engaging a corresponding recess in said base plate, and means for flexibly connecting the sections of said leg to each other, said means comprising a bolt which extends through suitable holes in the sections of said leg, a nut i threaded thereto and a spring inserted between said nut and one of said connected members.

15. In a machine of the type described, the i combination with a carriage provided with guide slots, of clamps adjusts )ly secured "11 said slots, said clamps com prising portions which project above the sutiace of said carriage provided with guide ways which are i outwardly and downwardly inclined, jaws, flanges thereon fitted to and movable towards and from the surface of the carriage in said inclined guide ways, springs applied to said comprising a section secured to the bed and ierefor comprising a leg jmvsarltanged to maintain them atthe hmit I presence hf LWstrbssribing witnesses this of their movement nbeve the surface of the 30 day of January, A. D. 1907. carriage, stops which hmit the m venu-nt of I 7 V Y said jaws under the influence of sanl swings, 5 and means for adjustmg said clamps an the guide slots in said carriage. "itness m In testnnony, that, we chum the fomgmng CII.-\S. KRAUSE, as our mventlon, We aflix our slgnatures 111 S. I. CADY.

K i f i I .'1