US1305421A - Wood-shaving machine - Google Patents

Description

c. A. WAKEMAN.

WOOD SH-AVING MACHINE.

APPLICATION HLED DEC.3|. 191B.

1 ,305,42 1 Patented June 3, 1919-.

3 SHEETS-SHEET I.

INVENTOR ATTO R N EY C. A. WAKEMAN.

WOOD SHAVING MACHINE. APPLLCATION HLED 0m31.191s.

Patented June 3, 1919.

3 SHEETS-SHEET 2.

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WITNESSES I me [wams grens co Haro L A C. A. WAKEMAN'. WOOD SHAVING MACHINE.

APPLICATION FILED Dc.31.191s.

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ATTOR N EY mr mams Fermes sa. Maremma., wfxsnmcrow. n

CHARLES A. WAKEMAN, OF OSHKOSH, WISCONSIN. i

woon-sHAvING MACHINE.

Specification of Letters Patent. y

Patented June 3, 1919.

Application filed December 31, 1918. Serial No. 269,153.

To all whom t may concern Be it known that I, CHARLES A. WAKE- MAN, a citizen of the United States, and resident of Oshkosh, in the county of l/Vinnehago and State of Wisconsin, have invented certain new and useful Improvements in lrVood-Shaving Machines; and I do hereby 'declare that the following is a full, clear,

and exact description thereof.

My invention relates to new and useful improvements in machines for cutting thin knife-edged shavings or the like, of that type wherein there is provided a rotary knife head and means for feeding work'against` one side of the knife head and simultaneously rotating the work. Y

It is in general the object of my invention to simplify and otherwise improve the structure and to increase the efficiency of machines of this character. v It is more particularly my object to insure an even feeding movement of the work to the knives of the cutting head, and to maintain a fairly constant relativespeed ofr rotation of the knife blades with respect t'o the speed of travel of the peripheral surface of the log, iny view ofthe reduction of the log by cutting, and the consequent diminution of the diameter of the log. It is more particularly my object inthis connection to provide an arrangement for automatically varying the; gear ratio between the cutter drive shaft and a shaft for feeding the work, to compensate for the reduction in diameter ofthe work.

A further object resides in the provision of an arrangement for` automatically halt-V ing feeding movement of the work toward the cutter head, and for readily instituting said feeding movement at any'desired position of the work carrying means with respect toy the cutter head.

A still further object resides in the provision of a machine of this character wherein a pair of logs may be held against opposite portions of the cutter head to utilize said cutter head to a maximum extent.

With the above and other objects and advantages in view, which will be apparent as the description proceeds, my invention Vresides in the novel features of construction, combination and arrangement of parts as hereinafter more particularly described and defined by the appended claims.

In the accompanying drawings:

Figure 1 is a side elevational view of a wood shaving machine embodying my invention, portions of the log feeding mechanism being broken away.

F ig. 2 is a plan view of the machine.

Fig. 3 is a sectional view through the machine on, a plane indicated by the broken line 3-3of Fig. 2.'

Referring now more particularly to the accompanying drawings, there is provided a main frame including an upper pair of side sills 10 and a lower pair of side sills 11 connected with the upper sills by vertical and horizontal end bars 12, the main frame being supported on legs *13.y A main shaft 14 extends longitudinally through the frame, one end of the shaft carrying belt pulleys 15 while the other end of the shaft carries a circular cutting head 16 of type common in machines of this character, and provided with radial knife blades 17 projecting from its outer face. For utilizing the cutting action'of these blades both above and below the rotativeV similar channel plates 21 engaged on outturned track projections of of mainframe sills 11.

Inasmuch as the work carriages and the the lower pair operating means of the carriages are identical, but` onewill be described specifically, the corresponding numerals applying to both carriages. Each carriage is f provided atfitsfforward end with outwardly and then forwardly extending arms '22- and-23 re- Y spectively embracing the cutter head 16. A

Screw 24 is transversely threaded in the arm 22, carrying a point 25 engageable with one end ofthe log or block to be cut, while a mandrel 26 is mounted` in the outer end of the other arm 23 forengagement with the log or block, this mandrel being driven by a bevel gear connection 27 with a shaft 28 which is driven by a -bevel gear connection 29 with aV shaft 30 driven in turn by a bevel gear connection 31 with a shaft 32 journaled longitudinally on the carriage. The shafts 28 and ico 30 are carried by the angularly disposed portions of the arm 23, to thug provide clearance for movement yof the carriages with "respect to the cutter head to feed work theretoward. The shaft 32 is d riven by a crown pulley 33 which 'is sp'lined thereon and which is driven by a belt 34 trained about a pulley on the main sha-ft 14. The hub of the pulley 33 is grooved to rece-ive the bearing portion of a. bracket 35 projecting from the main frame to hold the pulley Aagainst movement out of alinement with the pulley of the main shaft, said bracket 35 and the pulley belt projecting through the cutaway intermediate yportion vof the carriage :whereby movement of the carriage is permitted without interference with continuous driving operation of the various shafts carried thereby.

F or feeding the carriages rearwardly of thejbodyframe, to thus :feed work carried :by their arms toward the cutter head in amanner whereby'the :speed 'of feeding movementJ is automatically progressively increased to compensate for fthe ,progressive decrease of peripheral y'surface of the work, a counter shaft 36 is mounted in bearings 37 projecting ylaterallyfrom the Imain frame, and a parallel screw shaft 38 is-also :mounted on the side of the main frame and is engageable by nut sections 39 carried by :the carriages. The shaft .36 andscrew shaft 38 are connected k-by a reducing :train of gears 40, of that type including series -of double gears loose on thc Ashaft and meshing with end gears fixed on the shafts, although any other preferably` conventional reducing drive v may be employed. IAfoonic-al ybelt pulley 41 iis fixed-onthe main Idrive sha-ft 14, having its smaller.enddisposed forwardly anda conical pulley 142i@ disposed on theshaft 361having its smaller .end disposed rearwardly of the machine. A belt v43 is :traine-d. about these pulleys and is engaged by Ashifter arms 44 dependingzfrom the upper carriage. Thus the speed vimparted to the "carriage feeding mechanism is automatically increased upon rearward movement of the carriages, and this increasev of-speed is proportional to the decrease of peripheralarea of the-work as it is cutfthus insuringzaneven cutting action on the workrthroughout the entire operation, andatthe Sametime affording a positive feed forthework against the cutting blades.

The nut-sections 39 carried by the carriages are-in the form ofA arcuate head portions providedwith thread sections engageable with threads ofy the screw shaft. 38V and these head 'portions are lcarried onl shanks 45 which are slidable in transverse dove-tail channelways in blocks46 at the sides ofthe carriages whereby the-nutsections maybe shifted from the screw shaft-to stop the feeding action andto-permit a rapid outward shifting movement of the carriages to initial position. In the present construction, these nut sections are operated simultaneously by an angle lever 47 having one arm pivoted to the channel block 46 of the upper carriage and having its other arm extended upwardly to form a handle, the angle portion of this lever being pivoted to the. shank 45 of the upper nut section and pivoted to a link 48 which is in turn pivoted to a lever 49 pivotally connected with the lower channel block 46 and the shank 45 of the lower nut section. Thus rocking movement of the lever 47 will procure engagement or disengagement of the nut sections, the lever being normally locked in position holding the nut sections 1in engagement with the screw shaft by a pawl 50 pivoted on vthe upper carriage and resiliently urged to engage the lever by aspring 5l. rThe lever is resiliently urged against the locking action of .this pawl 4by a spring 52, and to control movement of Qthe lever from the front end ofthe machine, a. rod` 53 extends forwardly from Athe upper endlof Ythe lever, being guided in an upstand-V ing eye 54 on the carriage, and terminates in a suitable handle grip forwardly of thecutlter head 116.

For automatically releasing the nut sections at a desired inward Vlimit of feeding movement of the carriages, a cam projection 55 is carried 'on an arm vupstanding on and laterally offset from the rear ofthe main frame and vthis cam portion is `en-A gageable with an abutment pin 56 on Ithe lever pawl 50-to rock said-pawl against fthe action of its spring'l.

yI Ihave thus provided a .simple and efficient machine for cutting V'thin yknife-edged shavings orthe like, which is automatic in operation with the exception of 4resetting the feeding carriages and securing :fresh work material thereto. Y

illVhile I have shown a preferred embodiment ofmy invention, it will-be appreciated thatfvarious changes and modifications of structure may ibe ,resorted to without departing in any manner from the spiritof the invention, and that so far as certain phases of. the inventionr are concerned, butua single carriage may be employedforrholdingwork'material. y

lThat is claimed is:

l. A machine of the class described'incl-u'ding avmainfframe, a rotating knife head carriedfby the main frame, a pair of carriages slidably carriedby 'themain iframe, means carried by said carriages for holding work lfor engagement by opposite portions of the knife'head, a driven screw shaft, and nut sections carried; by the carriagesl and engageable with the screw shaft.

72. A machine of the class described'including a main frame, a rotating gknife head carried by the main frame, a pair of carriages slidably carried by"` the main frame, means carriedby said carriages for holding work for engagement by opposite portions of the knife head, a driven screw shaft, nut sections carried by the carriages and engageable with the screw shaft, and lever means connecting the nut members for procuring simultaneous movement thereof.

3. A machine of the class described including a main frame, a drive shaft carried by the main frame, a knife head on said drive shaft, a carriage slidable on the main frame, outwardly and forwardly extending arms on the carriage embracing the knife head, means at the f ree end of said arms for holding work, means carried by the carriage for rotating the Work held by said arms, and means for moving the carriage to feed work toward the-cutter head.

4. A machine of the class described including a main frame, a drive shaft carried by the main frame, a knife head on said drive shaft, a carriage slidable on the main frame, means carried by the carriage for holding work to be engaged by the cutter head, a shaft on the carriage, means operable by said carriage shaft for rotating the work, a pulley splined on the shaft, a bearing bracket for said pulley carried by theI main frame, and a drive connection between'- said pulley and the first named shaft.

5. A machine of the class described including a main frame, a drive shaft carried by the main frame, a knife head on said drive shaft, a carriage slidable on the main frame, outwardly and forwardly extending arms on the carriage embracing the knife head, means at the free ends of said arms for holding vwork including a mandrel, and means for driving said mandrel to rotate the work comprising a shaft mounted on the carriage and extending longitudinally7 of its direction of sliding movement, a splined drive connection for said shaft, and a pair of gear connected shafts carried by one of.

the carriage arms and having gear connection respectively with the said longitudinal shaft and the mandrel.

In testimony that I claim the foregoing I have hereunto set my'hand at Milwaukee, in the county of Milwaukee and State of Wis- CHARLES A. WAKEMAN.

A Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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