US1149304A - Cutter-head. - Google Patents

Description

W. M. TAGART.

CUTTER HEAD.

APPLICATKON FILED AUG-I7. 1914.

1,149,304, I Patented Aug. 10, 1915.

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WHITFIELD M. TAGART, osMALvnsN, nexansas, Assrenonor ONE-HALFTO SAMUEL B1. SULLINBEB-G-ER OF MALVERN, ARKANSAS.

cnrrnn n'snn Application filed August'li, 1914.

To allwlmm it may concern:

Be it known that I; WVHITFIELD M. TAG,- ART, a citizen of the Unitedstates, residing at liilalvern, "in the county of Hot Springs and Stateof Arkansas, have invented a new and useful Cutter-Heath of which the following IS a speclfication. P

The device forming the subject matter of this application 1s a'cutter head adapted to be used on planing machines for dressing lumber and for cuttinginoldings and other special. shapes. 1 k One object of the present invention isto provide novel means whereby the cutting blades may be held in place without resort inn to securing bolts. I 5 I Another object of the inventionis to provide novel means whereby the blades are supported in their central portions? Another object of the invention is to pro- 'vide novel means whereby the blades may be of devices of that type to which the present details of construction hereinafter described and claimed. it being understood that changes in thejprecise einbodiinent of the invention herein disclosed canobe made within thescope of w iat is claimed without departing from the spirit of "the invention.

In the accompanying drawingFigui-e 1 shows the inventionin side elevation parts being broken away; F '2 is a longitudinal sectionrFig. 3 is a cross sectionon the line 33 of Fig. Fig. 4. is a perspectiveview depictingone of the blades; F 5 is a side elevation showing a modified,yforin of the invention, the blades being omitted.

In carrying out the present" invention thcrc is provided a tubular socket or shaft denoted by the numeral 1 "and equipped at one end with a head 2 havingnotches 8 in its periphery. Betweenthe'n'otches 3, theinner edge of the'headQ is under cut as shown at 41 to define overhanging flanges 5. At its opposite end the shaftl is threaded asshown at 6. The shaft is provided adjacent the head72 with a longitudinally extended key seat Specification of Letters Patent,

ery," the retaining dish demand. and are provided with transverse teeth 21 Patented An. 10, 1915. Serial no. 857,228.

gurrounding the shaft 1 and located adjacent the head 2 is an annular cutter support 8 having notches 9 adapted to line up with the notches 3 in the head 2. Intermediate the notches 9, the periphery of the cutter support 8 is fashioned into a plurality of bladesupporting tables 10 having transverse teeth or corrugations 11. The cutter support 8 is equipped with a key seat 1'2 adapted to receive a key 1 1- lodged. in the lrcy seat 7 of the shaft 1.

Surrounding the shaft 1 is a retaining disk having notches 16 in its periphery which line up with the notches 3 and in the head and in the cutter support 8 respectively. Upon its inner face and adjacent its periph- 15 is undercut as shown at 17 to define overhanging flanges 18. The retaining disk 15 is supplied with a key'seat 19 receiving one'end of the key 14.

ri plurality of blades 20 are provided, and these blades will be shaped as the work inay The blades 20 rest on the tables 10 which interfit with the teeth 11 on the tables. At their ends, the blades 20 are beveled as shown atQQ, so as to fit beneath the overhanging flanges 5 and 18 of the head 2 and the retaining dish 15 respectively. The cutting edges ofthe blades are indicated at 23 money be shaped asdesired.

h ii'eadcd onto the portion 6 of the shaft 1 Emit is necessary to back the nut or collar away from the retaining disk 15 so as to release the hold of the head 2 and the retaining disl; on the edges of the blades. The blades then may be removed or may be adjusted c'ircuniferentially of the cutter supupon the tables 11, the interfitting corru, ions or teethf2111 serving to hold 7 the blades in position after adjustment.

t is to be observedthat the collar or nut constitutes, aneilicient means for moving the dislrlfi toward thehead 2, to bind and retain the blades; through-bolts and other' eouivalentstructures being dispensed with.

The blades 20 not only are supported along their edges,- but, referring to Fig. 2, it will be observed that the element '8 sup gorge the blades between the disk 15 and the isa nut or collar 24 adapted to bear against i Referring to Fig. 5, the shaft is shown at 25, the head at 26, the supports at 27, the retaining disk at 30 and the nut at'31. Between the supports'27 is interposed a spacing disk 2-8 which is under cut at 29 atits periphery and upon both sides to receive the edges of the blades, the, structure shown in Fig. 5 being employed when more than one set of cutters is used. The spacing disk 28 may be considered as a retaining head so far as are concernedthose blades which lie between the spacing disk 28 and the retaining disk 30. Therefore, in both forms of the invention there is disclosed a shaft having a head, a retaining disk on the shaft, a blade bound between the head and the retaining disk, and a nut threaded on the shaft and head for adj ustment toward and away from a is claimed is -exerting a pressure against the retaining disk. V i V Having thus described the invention,what

' 1. Ina device of the class described, a shafthaving a head a retaining disk on the shaft and adjustable toward and away from the head; an annular cutter support 'on the shaft between the head and the disk; and a blade resting on the support, the blade and the support having interfitting teeth extended longitudinally of the'shaft and serving to hold the bladein adjusted positions against movement circumferentially of the shaft, the disk and thehead upon'the' one hand and the blade upon the other hand being provided with mutually interengaging faces inclined longitudinally of the shaft and coacting to move the blade toward the center of the shaft thereby to hold the teeth of the, blade'a-nd the support interengaged when the disk is moved't'oward the head, the disk being movable away from the head thereby to permit the teeth of the blade and of the support to be disengaged and to permit the blade to 2. In a device of the class described, a shaft having a head; a disk mounted onthe thehead; a support located on the shaft between thedisk and the head and movable toward and away from thehead; a blade upheld by the supp'ort and clamped between the disk and :the head; the blade, the. support and the disk having peripheral notches,

' and the notch in the support lying beneath, the working edge of'the blade; and a shaft carried key engaging 'the'support and the diskto hold the same against rotation therej key be adjusted circumferen tially of the shaft.

by to aline all of the notches and to cause the same to form a continuous, chip-discharg the threaded portion of the shaft and ,the'

head; a removable key in the seat and held against endwise movement therein; a disk on the shaft and having a seat receiving the a nut on the threaded portion of the shaft and engagingithe disk, one end of the key being spaced from the nut; a support on the shaft between the head and the disk and I having a key receiving seat; and a blade upheld by the support and clamped between the disk and the head. I V

V 4. In .a device oftheclass described, a

shaft having a head; a disk mounted on'the shaft for adjustment toward and away from the head; a support locatedon the shaft between the disk andthe head and movable toward and away from the head; a blade upheld by the support; the blade, the support and the disk having and the 'notch in the support lying beneath the working edge of'the blade; a shaft carried key engaging the support and the disk to hold the sameagainst rotation, thereby to aline all'of' the notches and to cause the peripheral notches same to form acontinuous chip discharging channel; the blade and the support having interfitting teeth extended longitudinally of the shaft and servingto hold'the blade in adjusted positions against movement circumferentially of the shaft, the disk and the head upon the oneliand and the blade upon the other hand being provided with mutually engaged faces inclined longitudinally of'the shaft and coacting to movev the blade toward the'center of the shaft thereby to hold the teeth of the blade and the support inter-engaged when the diskis moved toward the head, the disk being movable away from the head thereby to permit the teeth of the blade and the support to be disengaged and to permit an adjustment of the blade circumferentially of the shaft. 7 V, V

In testimony that I claim the foregoing as my own, I have hereto aiiixed my signature in the presence of two witnesses.

vWitnesses: v

DAVID J. Po'r'rs,

J. H. ROSEBERRY..

. Copies (if this pate' nt may beobtainedfiirfive cents each, by addressingthe Commissioner of Patent a Washington, D. C.

WHITFIELD M. TAGART.

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