US1141222A - Excelsior-cutting machine. - Google Patents

Description

W. A. WALKER.

EXCELSIOR CUTTING MACHINE.

APPLICATION FILED JULY 3,1914.

Patented June 1, 1915.

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APPLICATlON FILED JULY 3.1914.

Patented June 1, 1915.

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WILLIAM A. WALKER, OIE ENTERPRISE, MISSISSIPPI.

EXCELSIUIWCUTTING MACHINE.

menace.

Specification of Letters Patent.

Patented June 1, 1915.

Application filed July 3, 1914. Serial No. 848,869.

To all whom it may concern:

Be it known that 1, WILLIAM A. WALKER, a citizen of the United States, residing at Enterprise, in the county of Clarke and State of Mississippi, have invented certain new and useful Improvements in Excelsior- Cutting Machines, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved eX- celsior cutting machine, and has for its primary object to provide improved means for quickly cutting a number of wood blocks into fine shreds 0r excelsior.

The invention has for a more specific object to provide a rotary disk provided with a plurality of shredding bits and cutting blades, and block feeding means arranged upon opposite sides of the disk shaft, whereby the respective blocks are operated upon in the downward movement of the cutters upon one side of said shaft, and in their upward movement upon the other side thereof.

The invention has for a still further 'ob ject to provide improved means for mounting the wood blocks in position, and means carried by the disk and cooperating with a block feeding roller to progressively feed the block to the cutting knives in the rotation of the disk.

The invention has for still another object to generally improve and simplify the construction of machines of the above character whereby the same are rendered very durable and serviceable in practical use and capable of being manufactured at comparatively small cost.

With the above and other objects in view, the invention consists in the novel features of construction, combination, and arrangement of parts as will be hereinafter referred to and more particularly pointed out in the specification and claims.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a side elevation of an eXoelsior cutting machine embodying my invention in its preferred form; Fig. 2 is an elevation looking toward the cutting face of the disk; Fig. 3 is a top plan view; Fig. 1 is a vertical section taken on the line 44L of Fig. 2; Fig. 5 is an enlarged detail perspective view of one of the block holders; and Fig. 6

struction, and in the same the angularly disposed adjustable cutting blades 10 are removably mounted, said blades being held in their adjusted positions by a clamp holder 11.

12 designates the shredding bits which are arranged in the castings 9 in spaced relation to the cutting edges of the blades 10. The bit blocks are provided upon their ends with studs 13 for movement in the channels or grooves 14 provided in opposite edges of the castings. A spring 15 normally acts to force the shredding bit outwardly so as to dispose the shredding teeth 16 thereof be yond the face of the rotary disk. These castings may be secured to the disk by means of bolts indicated at 17 or in any other preferred manner.

18 designates a tire or rim secured upon the periphery of the disk which is provided with gear teeth 19. Upon the face of the rotary disk a series of radially disposed teeth 20 is mounted, the purpose of which will be hereinafter explained. The disk is driven by a gear 21 which meshes with the gear teeth 19.

Upon one side of the disk shaft 6 and adjacent to the face of the disk from which the cutting edges of the blades 10 protrude, spaced pairs of standards or supports 22 are mounted. A lower longitudinally grooved roller 23 has its shaft 24 journaled in fixed bearings 25 secured between the respective pairs of standards. An upper roller 26 which is also longitudinally grooved has its shaft 27 mounted in the movable bearings 28 arranged between said standards. Bolts 29 are connected to these latter bearings and extend upwardly through guides 30 arranged between the upper ends of the standards 22. Coil springs 81 on said bolts operate to normally force the roller bearings 28 downwardly. Upon one end of the shaft 26, a pinion roller 32 is fixed.

Upon one pair of the standards 22 a vertical shaft 34 is mounted in spaced bearing A brackets 35. The upper 'and lower ends of this shaft are equipped with bevel gears 36 and 37 respectively, and a similar gear 38 on the upper roller shaft 37 meshes with the gear 36, while the gear 39 fiXed on the lower. shaft 23 engagesthe gear 37. To the ends of the upper roller shaft'27 the extremities of a horizontally disposed U- shaped rod 33 are connected. Upon a suit- 1a able support 40 a rack segment 41 is secured on which the lower end of a lever 42 i is fulcrumed. This lever is connected to the central portion of the rod 33. It will be obvious that by simply manipulating the lever 42, the upper roller 26 may be elevated against the action of the springs 31 so that a wood block indicated at W may be inserted between the spaced grooved rollers 23 and 26. The lever 42 is, of course,

equipped with the usual spring pressed dog for engagement with the teeth of the rack 41, whereby the lever may be locked against movement. As above stated, this block holder is arranged upon one side of the disk shaft 6 and the rollers 23 and 26 are so disposed with respect to said shaft that the block will be held in position to be operated upon by the cutting knives.

Upon the opposite side of the disk shaft 6, a second block holder is arranged, which,

also will support a block in position for engagement by the cutting knives. This latter holder includes a bar 44 which is pivoted at its lower end asshown at 45 upon a floor 85 plate. The upper end of this bar is angularly disposed and formed with a longitudinally extending socket 46. At the lower end of said socket a laterally projecting block supporting lug 47 is formed upon said bar.

5 40 A short bar 48 is vertically movable in the socket 46 and is provided upon its upper end with a block clamping or gripping lug 49. Immediately below the supporting lug 47 on said bar a roller 50 is mounted, the 4 axis of said roller being disposed beyond the end of said lug. Upon the pivotally mounted bar 44 an arm 51 is secured, in the upper end of which the lever 52 is fulcrumed. One end of this lever is connected to the .l 50 upper end of the vertically movable bar 48.

A rack segment 53 is secured to the arm 51 and the locking pin on the lever 52 is adapted to cooperate with said segment in the usual manner to hold the lever in its adjusted position. A heavy coil spring 54 is attached at one end to the upper end of the pivoted bar 44 while the other end of said spring is connected to the vertically movablebar 48. As will be seen by reference I to Fig. 1, when the wood block W is in position upon the feeding device, the same is securely clamped and held between the lugs 47 and 49. A coil spring 55 has one of its ends secured to the floor and its other end 55 connected to the bar 44. This spring normally acts to move the block holder toward the cutting face of the rotary disk. The holder may be readily moved away from the disk in order that a new block may be inserted by means of the lever 56 which is connected to the bar 44 by a rod 57. This lever is provided with a locking dog for engagement with the rack 58, whereby the holder may be held against movement by the action of the spring 55 after it has been properly adjusted with respect to the cutting disk.

Having now fully described the several structural features of my machine, its operation will be understood as follows. Assuming that the wood blocks have been mounted in the holders upon opposite sides of the disk shaft and properly positioned with respect to the cutting blades on the disk, when said disk is rotated in the direction of the arrow, shown in Fig. 2, in the downward movement of the cutters upon one side of the shaft, the shredding bits 12 will first act upon a block which is arranged upon the upper end of the holder bar 44, the teeth 16 of said bits cutting a. multiplicity of grooves in the face of the block. The blade 10 immediately following the bits shaves or cuts the wood in fine shreds from the block face as a consequence of thus grooving the same. Before the block is entirely consumed, the cutting blades will engage the periphery of the roller 50 which is loosely mounted and will readily turn under the pressure of the blades against the same. This roller may be constructed of wood or hard rubber so that it will not injure the knives nor itself be seriously damaged. This engagement of the roller 50 by the cutting blades also serves as an indication to the operator that a new block must be provided. The wood blocks are substantially equivalent in length to one side of the polygon defined by the arrangement of the cutting blades in the face of the rotary 11 disk so that as soon as one of the blades has performed its cutting action, the next succeeding shredding bit and cutting blade will engage the block. In the upward movement of the shredders and the cutting blades on the opposite side of the disk shaft, the operation above described is repeated upon the other block which is mounted between the peripherally grooved rollers 23 and 26. i After each of the blades has performed its cutting action upon the block, one of the teeth 20 upon the face of the disk will engage the roller 32 fixed upon the upper roller shaft 27 and rotate said shaft, thus rotating the roller 26 slightly to move the wood block, upon the upper end of which said roller is engaged, toward the cutting face of the disk. It will thus be seen that there is a progressive automatic movement of the block toward the cutters as the block is reduced in size in the operation of the machine. When the block has been largely consumed, the lever 4.2 is actuated to release the fragment thereof and a new block inserted in position between the rollers.

From the above description, it will be appreciated that I have produced a highly serviceable and eflicient machine for cutting excelsior from Wood blocks, and one which requires but little attention upon the part of the operator and comparatively little power for its operation. It will, of course, be understood that either one of the block holders above described may be dispensed with if desired, or a larger number of said holders than I have illustrated in the drawings provided. As the several parts of the machine are all of simple form, they may be replaced when necessary at a small cost.

While I have above described the preferred form, construction, and arrangement of the several elements employed, it will be understood that the device is, nevertheless, susceptible of considerable modification therein, and I therefore reserve the privilege of resorting to all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

What is claimed is:

1. In a machine of the character described, a rotary disk, a plurality of cutters mounted upon said disk, a block holder arranged upon one side of the rotary axis of the disk and including a pivotally mounted bar having a socket in one end, manually operable means mounted in said socket for releasably holding a block in position on 1 said bar, and a spring connected to said bar and normally acting to move the block toward the cutting face of the disk.

2. In a machine of the character described, a rotary disk, a plurality of cutters mounted upon said disk, a block holder arranged upon one side of the rotary axis of the disk and including a pivotally mounted bar having a socket in one end and a laterally projecting lug formed on the bar at the inner end of the socket, a block clamping member slidably mounted in said socket to engage a block and clamp the same upon said lug, a lever connected to said clamping member to actuate the same, a spring connected to said bar and normally acting to move the same toward the cutting face of the disk, and manually operable means connected to said bar to move the block away from the disk.

3. In a machine of the character described, a rotary disk, a plurality of cutters mounted upon said disk, a block holder arranged upon one side of the rotary axis of the disk and including a pivotally mounted bar having a socket in one end, a spring held bar engaged in said socket, said pivoted bar being provided with a laterally projecting lug at the lower end of said socket to engage one end of the block, a lug upon said spring held bar to engage and clamp against the other end of the block, a lever pivotally connected to the spring held bar to move the same and disengage the clamping lug from the block, a guard roller mounted upon said pivoted bar and disposed beyond the block engaging lug thereon, a spring connected to said bar and normally acting to move the block toward the cutting face of the disk, and manually operable means connected to said bar to move the block away from the disk.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

WILLIAM A. WALKER.

Witnesses:

R. CLAY, E. E. MOSBY.

Gopies of this patent may be obtained for five cents each, by addressing the Uommissioner of Patents, Washington, D. C.

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