US1834034A - Stave planer cutter head - Google Patents

Description

Dec. 1, 1931. E. R. NORTON ET AL STAVE PLANER CUTTER HEAD Filed Oct.

2 Sheets-Sheet 1 In veniors .EEflriozz A J 06/31 m E. R. NORTON ET AL STAVE PLANER CUTTER HEAD Dec. 1, 1931.

Filed 001;. 15, 1950 2 Sheets-Sheet 2 Inveni ons" 12 flri'on J fifjtweeler K Allomcy Patented Dec. 1, 1931 EDWARD niivonronnunnmos G. WHEELER, or rrnn BLUFF, ARKANSAS s'rnvn rLANnn CUTTER HEAD 2 Application flle'doctober 15, 1930; seriarno. 488,906.

T his invention relates to'barrel stave planing machines generally and more particularly to a cutter head for machines of this character but it is to be understood, of course, that a cutter head in accordance with this invention may be used in connection with any type of woodworking or other machines for which the same is found adapted and desirable.

An important object ofthe invention'is to provide, in a manner'as hereinafter set forth, a cutter headfor barrel stave planing ma-- chines embodyinga novel construction and arrangement of knives together with novel means 'forfriction'ally' clamping the knives in position for use.

Other objects of the invention are to provide a cutter head of the character described which will be simple in construction, strong,

durable, eificient in operation and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention may become apparent from a study of the follow- F ing specification, taken in connection with the accompanying drawings wherein like characters'of reference designate corresponding parts throughout the several views, and

wherein Figure 1 is a view in front elevation of a 7. portion of a stave planing machine showing a cutter head constructed in accordance with this invention mounted in position thereon. Figure 2 is a view in front elevation of a cutter head in accordance with this invention to be used for planing the outside of the staves.

Figure 3 is a top plan view of the form of the invention illustrated in Figure 1 which is for use in planing the inner side of the staves. I

Figure 4 is a fragmentary sectional view through the head used for planing the'inner side of the staves and showing aknife mounted thereon.

Figure 5 is a fragmentary sectionalview through the cutter head which is used for planing the outside of the staves and showing a knife in position thereon.

Figure 6 is a vertical transverse sectional view takensubstantially on the line 66 of Figure 3. Y

Referring tothe drawings in detail, it will i be seen that the referencenumeral 1 designates generally the upper front frame portion of a conventional barrel stave planing machine in whichis journaled transversely a shaft 2havin'g one end projecting laterally of the frame 1' and having fixed thereon a pulley 3 forreceiving a. suitable drive belt (not shown) for operating the shaft 2 from a suitable source of power. As seen in Fig- f ures 1, 3, 4 and 6 of thedrawings, a con-' vexed head 4 is mounted'in any suitable way 7 on an intermediate portion of the shaft 2 and is providedwith theintegral, reduced extensions 5 at its ends. v

'Circu'mferentially spaced channels 6 exi tend longitudinally from end to end of the outter head 4 and said channels have their inner walls provided, on one side, with longitudinally extending grooves 7 which are co extensive with the channels 6. Each channel 6 is further provided with a shallow groove having one side opening outinto the groove 7 and its'other side forming a shoulder 8 at its junction with" the remainingzpart of the inner wall of the channel. As clearly seen in Figure 6 of; the drawings, the shouldersv8 are. disposedflintermediate thev planes of the bottom or inner walls of the channels 6 and the bottom walls of thegrooves 7. a The channels 6 are disposed on center with respect to the lateral axis of the cutter head 4.

A knife 9 is' disposed longitudinally "in each of the grooves 7 in abutting engagement with the adjacent side of the channels 6 and said knives 9 are provided witha convex cutting edge 10 which projects beyond the periphery'of the cutter head 4. The cutting edgelO of each knifeconforming substantially to the contour of the cutter head 4. "It will be noted that the arrangement of the channels 6 in the cutter head 4 issuch that the walls of said channels against which the I knives 9 are disposed are terminated inwardly ofjthe outer ends of the opposite walls of the channels6. Pressure plates 10 are disposedin the channels 6 for abutting en gagement with the knives' 9 with theirinner edges located in the shallow groove with the shoulders 8 acting as means for limiting the outward movement of the plates and each of cure the knives 9 in position are z l-rrangedv ,as' seen in'Figure 4 of the drawings. The

7. ay be expe the plates 10 is provided with a plurality of transverse threaded openings for receiving the headed bolts 11. The heads-of the bolts 11 abut the walls of the channels 6 which are free of the knives 9, for clamping the plates 10 against the knives 9 upon rotation of the bolts ll-in-a manner to frictionally secure the knives in position. The outer edge of each of the plates 10 is provided with aglongitudinal groove 12.

' The form of cutter head illustrated in Figures 2 and 5' of the drawings is for planing the outer'side of the staves and to this end the head 1 is concaved as are also the cut- I ting edges 15 of the knives. The'cla mping bolts 16 which secure the knivesinposition are arranged as bestillustrated in Figure 5 of. the drawings and the bolts 11 which seknives having the'concave cutting edges 15 as seen in Figures 2 and 5 of the drawings are designated by the reference numeral 17. In all other'respects the form of the invention illustrated in Figures 2 and '5 of the drawings is similar to that form of the in-' vention illustrated in Figures 1, 3, 4 and 6.

' After the knives are set. in their respective cutter heads, it has been found'necessary that the same be jointed before the machine is placed in operation and to facilitate this operation a jointing tool ismounted in position: on the supporting frame 1 for operative e'n{ gagement with the cutting edges of the knives.

This jointer is designated generally by the reference numeral 18.

As will be readily apparent, the knives 'ditio'usly ad usted and secured in position inthe cutter heads. A cutter headin accordance with this invention has been found to practically eliminate torn Sta-V88 and waste of timber; It will further readily'ap arent that/the cutter heads constitutingthis invention conform substantially to the cross sectional 'shape'to which the staves 'are to be cut or planed] While but four knives have been shownmountedin position in the heads any desired number of claimed.

What is claimed is A device of the character described comprising a head having a longitudinal channel therein, the inner wall of the channel havin a deep longitudinal groove in one side t ereof, and a shallow groove having one side opening out into the deep groove, theopposite side of the shallow groove forming a shoulder at its junction with the rest of said inner wall, a knife disposed longitudinally in"thechannel in abutting engagement with a side wall of the channel and having its inner ed e located in the deep groove, La pressure. p ate in the channel and having its inner edge located in the shallow groove, and operatively engageable with the knife, said pressure plate being provided with a plurality of threaded, transverse openings, and headed bolts threaded into the openings and having their heads engageable with a side wall of the channel for engaging the pressure plate against the knife upon rotation of the bolts in one direction in a manner.

to frictionally clamp the knife in position, the outer edge of the pressure plate having a longitudinal groove therein.

In testimony whereof we aflix our signa- EDWARD R. NORTON.

AMOS G. WHEELER.

fall within the scope of the invention as

Images