US1479073A

US1479073A - Milling machine

Info

Publication number: US1479073A
Application number: US432594A
Authority: US
Inventors: Ira T Howard
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-12-22
Filing date: 1920-12-22
Publication date: 1924-01-01
Anticipated expiration: 1941-01-01

Description

Jana 1,1924 mmma i. T. HOWARD MILLING MACHINE Filed Dec. 22, 1920 3 Sheets-Sheet 1 [f4 Tffawwd Jan, 11, 1924 1,479, 0fi3 l. T. HOWARD MILLING MACHINE Fild Dec. 22, 1920 :s Sheets-Sheet B mum/70R Zia f/fawmd Jan 1

m4

1,47%)73 I. T l-EDWARD MILLING MACHINE v Filed Dec. 22, 1920 3 Sheets-Sheet 5 50 I 1 Flag Z74 fiwgrd Patented Jan. ll, E22 1.

entree snares warn IRA '1. HOWARD OF GOSHEN, INDIANA.

MILLING MACHINE.

To all whom it may concern:

Be it known that LIRA T. HOWARD, a

citizen of the United States, residingin- Goshen, county of Elkhart, State of Indiana, have invented certain new and useful 1m:

provements in Milling Machines, of which the following is a specification.

My invention relates to improvements in planers, especially so-called type-high machines, and is particularly. designed to plane or dress stereotype and wood mounted cuts, or the like, to type height.

Other objects of my invention are mentioned and described herein.

The preferred embodiment of my invention is illustrated in the accompanying drawings, in which Figure 1 is a top plan view of the machine; Fig. 2 is a section taken on the line 22 of Fig. 1; Fig. 3 is an enlarged section taken on the line 33 of Fig. 1; Fig. 4 is a fragment showing a section of the adjustable bearing on an enlarged scale; Fig. 5 is a section in elevation on the line 55 of Fig. 4: when viewed as indicated by the arrows; Fig. 6 is an elevation of one end of the cutter; Fig. 7 is a section taken through the cutter diametrically thereof; Fig. 8 is a perspective view of the sliding table and adjustable rack; and Fig. 9 is a fragment in section showing the cam lock.

Similar numerals of reference indicate like members throughout the several views on the drawings.

Referring to the drawings in detail, the numeral 1 indicates the machine pedestal which may have the flanged base 2 and the top flange 3. The numeral 4 indicates generally the carriage frame of the machine which is rigidly mounted upon the pedestal.

flange 3 and may be fastened thereto by bolts 5, or otherwise in any suitable manner. The carriage frame 4: is provided with the two opposed upright bearing housings. 6, 6 adapted to contain the adjustable bearings of the cutter element 7, as hereinafter described.

Each of the housings'6 is provided with a block chamber 8 in which a bearing block 9 is slidably arranged for vertical adjustment therein, as hereinafter described. Each block 9 is provided with a ball bearing chamber or recess 10 adapted to carry the ball bearing element which comprises the hub section 11, the ring section 12 and a plurality of anti-friction balls 13, which structure is well known in the art. The

cutter element 7 is provided with the end spindles 14: and 15, upon each of which spindles a hub member 11 is rigidly secured,

the spindle section 15 ofsaid cutter element being somewhat extended and projecting.

through the aperture 16 formed in one of the housings 6 to enable the drivingpulley 17 to be rigidly mounted thereon. Normally. there is sufficient clearance between the up per andv lower walls of the aperture 16 and the. spindle 15 to enable substantial vertical movement of the latter when adjusted, as hereinafter described.

Each of the blocks 9 may be provided'with I an upwardly extending stud or neck portion 18, a POI'tlOIl of-which is slidably mounted or arranged within the bore 19 of the stud.

guide portion 20 carried by the housing 6, I

said guide portion 20 being externally threaded at 21, which threads are engaged by the threaded adjusting cap or nut 22.3

Numerals

23, 23 indicate a plurality of screws threaded into the housings 6 below the blocks 9 and projecting upwardly into the lower end of the chamber 8 to engage the lower end of each block 9 for adjustment and stop members. A coil tension spring 24 is carried by each of the screws 23 and'bears against the lower end of the block 9, whereby the end of the stud 18 is projected upwardly and held against the cap member 22. Obviously, vertical adjustment either way of the; block 9 may be effected by the manipulation of the

members

22 and 23, and when-down-- wardly adjusted against the screw 23, the latter may be retracted to enable further downward adjustment of said block. In

such manner the cutter 7 may be elevated or depressed, as desired.

The block stud 18 may be provided with an oil channel 25, the upper end whereof may be normally concealed by a detachable dust cap 26 screwed into the member 22, the

lower end of said oil channel being incom munication with the chamber 111' whichthe ball bearing element is disposed, whereby lubricant may be fed to the latter. To prement to the lateral movement thereof,saidplates being centrally apertured at 29 to permit the passage of the cutter spindles 14 and 15.- Each.; plate -27. may be provided with a plurality of lugs 30,- 30'" to" which a guard or cutter cover plate 31 may be fastened by screws 32, or otherwise to screen the cutter 7, and thereby prevent possible injury to the machine operator. Screyvs;28. may secure the plate 27 to block 9.

The carriage frame 4 i's%providedl with the horizontal

parallel track members

33 and 34 which may be rigidly connected at their: outeryends by the:tr-ansyerse members or sections 35 andf 36. Numeral 371 indicates a worlrbea'ring table providech withithe parallel bearing r ailstwhich wmay be lashape'd in crosssection, 38 and 39 adapted to engage have said screwf un'ctio'n as a non-advancing:

screw when rotated in its bearingsi A handwheel 44fma y be mounted on the extension of the screwto enable rotatio'n thereof by the operator 'to move} the table 37 back and for-t-h be'n'eath-ithe cutter 7.

Forzr'emovablysecuring the work (stereotype) t'o'= be'planed on the movable table 37,

a pair offjsawtoothracks45 and 46i are provided, the former'being rigidly secured to and. transversely of one endof the table by screws 47. Theraclc 46 is disposed transversejly of thetOfp surface of the table- 371 and is provided with the depending tonguedi members=-48- and 4'9 at its op'po'site ends; the

tongues? 50 wl'1'ere'of project inwardly of the table-sides intoslots 51 formed in the oppoisiteflsid'e:edges of theta'bl'e, in which slotssaid rack tongues are slidably arranged; A eamloek bracket52 mayprojectfrom-the. rack 46 and have the cam face 53-on1its under surface whifch cam face is spaced fromlthei table 37. A handled cam member 54 is=rotatably mounted beneath the cam face 2 53, said cam. having a" stub shaft-55 w which is journaled in the aperture56 in bracket 52 and provided also'with the handle 57 to enable manual actuation; ofsaid cam; @bviously, engagementnby the point of the cam- 54 with? the camface 53- byrotatiomof the former effects a slight upwardl movement of the. rack; 46; thereby clamping. or binding the rack tongues 5'0 againsti the upper wall: of the table slots251gwherebythe rack is or. mayberelbasably locked: in any desired position mergers the -V shaped recesses 59 therein at intervals;

therein, therecesses of each ridge being formed o-utof circumferential. alignment:-

with the' adjacent ridge recesses, whereby a staggered relation= of; the teeth in different.

sets is effected. The teeth are, then. sharpened by'bevelingthe tooth edge at 60.

Thewidt-h of'the'recesses59'is less than thew idth of the cutting edge of eachtooth disposed circumferentially adjacent, that is, just ahead of and behind said recess, whereby the cutting plane-of the teeth overlaps slightly and effects a remarkably smooth finish to the work.

An electric motor. 61 is=provided for drivingthe cutter 7, which; motor may be'suitably mounted upon the bracket: 62, said 1no.--

tor having a driving'pulley 63 on the outer end of its driving shaft; A driving'belt. 64*

operatively connects the motor: pulley 63 with the cutter driving pulley 157 carried on the cutter spindle 15. p in the belt 63 the motor bracket 62 is adjustab-ly mounted upon the pedestal boss 65 to which it may be secured by a headed screw or tap-bolt 66wliich. is threaded into said boss and which engages. an elongatedslot 67 in. saidbracket, whereby vertical movementof said bracket and motor may be effected on'theinclined face of-said boss;

The preferred? construction ofthe housing 6 may include a detachable cap member 68 adapted to be fasteneditothe upper pontion of{ the housing by cap screws: 69, 69; to which cap thestudior'post member. 20 is:con-- nect'ed-i or with which it may. be integrala The cap- 68 may includev the upper end of the block chamber 8 and through which the block stud 18 extends:

1. I n a machine of the character; de-

scribed, the' combination. of a worksupport, a rotary tool and a bearing structure forthe' rotary tool, the structure including a.

housing, a bearing block, a bal1 -hearing'sup-. ported in said bearing block, meansfor ad- For taking. up slack justi'ng the location of said: bearing block with respect to-the housing, and meanslfor.

adjustably limiting'the movement of; said:-

bearing block-,said last named means and'the bearing; block. being provided with a: lubricating passage, terminating on theibear ing' in said bearing block said passage being;

remove straight and uninterrupted independently of the adjustment of the bearing block in the housing.

2. In a machine of the character described, the combination of a work support, a rotary tool, a support for the rotary tool including a ball bearing and a bearing block in which said ball bearing is mounted, a retaining disk adapted to prevent axial displacement of the ball bearing within the bearing block and a tool guard associated with said retaining disk.

3. In a machine of the character described, the combination of a work support, a rotary tool, a bearing structure for the rotary tool, including a bearing block, a supportfor the same, a ball bearing within the bearing block, a retaining disk for the ball bearing attached to said bearing block, lugs on the retaining disk and a tool guard removably connected to said lugs.

4. In a machine of the character described, the combination of a rotary cutter, a work supporting table, the table being provided with a statlonary abutment, a movable abutment, guiding elements at the edge of the table in engagement with portions of the movable abutment, and means on the movable abutment, between said edges, for looking it in selectively determined position on the table.

5. In a machine of the character described, the combination of a rotary cutter and a work supporting table, said work supporting table including a stationary abutment and having a pair of guiding grooves along its longitudinal edges, a movable abutment, portions of said movable abutment being in engagement with said guiding grooves, and a locking device, said locking device being adapted to vforce the movable abutment upwardly against a wall portion of said guiding grooves.

6. In a machine of the character, de-

scribed, the combination of a rotary cutter and a work supporting table, said work supporting table including a stationary abutment, a movable abutment, and having guiding elements along the edges for the movable abutment, and a clamp adapted to lock the movable abutment in selectively determined position with respect to the stationary abutment, said clamp being carried by the movable abutment midway between the guiding edges of the table and being adapted to coact with the table surface in looking the movable abutment in selectively determined position.

7. In a machine of the character described, the combination of a rotary cutter and a Work supporting table, the work supporting table including a stationary abutment, a movable abutment, guiding elements for the movable abutment, a cam lock bracket carried by the movable abutment midway between the edges thereof and having an inclined lower surface, and a rotary clamping head secured in said lug having an inclined upper surface and adapted to coact with the surface of the table for locking the movable abutment against displacement.

8. In a machine of the character described, the combination of a frame, having a slanting wall portion, a rotary cutter, a work supporting table, a motor, a bracket having a horizontal wall for supporting the motor and an inclined wall in engagement with the slanting wall portion of the frame, said slanting wall of the bracket being provided with a slot, and means extending through said slot into the wall portion of the frame for securing the motor adjustably in position with respect to the cutter.

In testimony whereof I have hereunto aflixed my signature this 20th day of Dec, 1920.

IRA T. HOWARD.