US1107031A - Excelsior-machine. - Google Patents

Description

0. GHAFFEY.

EXOELSIOR MACHINE.

APPLIOATIOK FILED 3123.1, 1913.

1,107,03 1. Patented Aug. 11,191

4 SHEETS-SHEET l.

if: 51mm,

THE NORRIS PETERS co PNomLITuQ. IASMIIGIDII. ll 1- 0. GHAPPEY.

EXGELSIOR MACHINE.

APPLICATION FILED FEB. 7, 1913.

Patented Aug. 11, 1914.

4 SHEETS-SHEET 2.

TH'E AQRRIS PETERS C0., PHOr LJTHO WASHINGTON, D. C.

O. GHAFPEY. EXOELSIOR MACHINE. APPLICATION FILED IEB.7, 191s.

Patented Aug. 11, 1914.

4 SHEETS-SHEET 3.

awe/whom THE AORRIS PETERS CO4v PHoro-LITHQ. WASHINGTON. D4 C.

0. CHAPTER EXGELSIOB. MACHINE;

APPLICATION FILED 1'33. 7, 1913.- Patented Aug. 11, 1914,

4 SHEET8SHEET 4.

THE NORRIS PETERS 50.. PHOTO-LITHO. WASHINGTON. 04 C,

UNITED s'rA'rEs PATENT OFFICE.

OSCAR CHAFFEY, 0F ALLIANCE, CALIFORNIA.

EXOELSIOR-MACHINE.

Specification of Letters Patent.

Patented Aug. 11, 1914,

AppIication filed February 7, 1913. Serial No. 746,906.

One object of the invention is to provide a machine of this kind which will do its, work very rapidly and with the minimumj expenditure of power.

Another object of the invention is to provide a machine of improved construction in which the scorers follow the grain of the wood, thereby producing excelsior" of excellent quality.

Another object is to effect improvements in the construction of the cutter wheel.

Another object is to effect improvements in the construction and arrangement of the knives.

Another object is to effect improvements in the construction and arrangement of the scorers or spurs.

Another object is to effect improvements in the construction of the carriage.

Another object is to efi'ect improvements in the construction of the feed mechanism. Another object is to provide means for equalizing the operation of the upper and lower feed rollers.

Another object is to provide improved means for adjusting the feed rollers to permit the insertion of the blocks or stock.

Another object is to provide improved cated by the line a-'a of Fig. 1. Fig. 6 is a detail transverse sectional view on the plane indicated by the line 6-?) of Fig. 1. Figs. 7, 8, 9 and 10 are detail views. Fig. 11 is a detail front elevation of a portion of the cutter wheel and showing a set of the scorers thereon. Fig. 12 is a detail inner edge elevation of the same The supporting frame of my improved excelsior machine has a pair of spaced sills 1 connected together at their ends by cross pieces 2. A pair of horizontally arranged beams 3 T are supported at their ends by inclined standards A which rise from the ends of the sills and at their centers by vertical standards 5 which rise from the ends of the sills, inclined braces 6 being also provided, the lower outer ends of which bear in the angles between the sills and the standards 4 and the upper, inner ends of which bear in the angles between the beams 3 and standards 5. Bolt rods 7-8 are also employed to secure the beams on the upperends of the standards, the said bolt rods extending through the beams and also through the sills. The beams are connected together at their ends by cross pieces 9. On the central portions of the beams are bearings 10. A vertically arranged cutter wheel 11 has its shaft 12 mounted in bearings, the cutter wheel being arranged between the beams 3 and the shaft being provided at its rear end with a power pulley 13 or other suitable driving element for rapidly rotating the cutter wheel when the machine is in operation.

The cutter wheel is of considerable diametrical extent, in practice, usually eight feet six inches in diameter so as to cause the scorers or spur cutters to substantially follow the grain of the wood and thereby produce excelsior of superior quality. In

practice, the cutter wheel is revolved at the speed of about from three hundred and fifty to four hundred revolutions per minute. This wheel is preferably made of wood but may be made of other suitable material, the spokes 13 extending from the hub plates 14: to the rim 15, the latter being provided with a tire 16. The front face of the rim is the working face of the wheel and said wheel is channeled on its opposite face, being provided with inner and outer flanges 18. The wheel rim is provided with alternately arranged equidistant radial openings 1920, the former in advance of the latter, in the direction of the rotation of the wheel as indicated by the arrow in Fig. 1 and the said openings 20 being also provided with rearwardly inclined walls, their rear walls being extended as at 21 and the shaving knives 22 being secured by bolts 23 to said extended inclined walls 21 so that the beveled cutting edges 24 of the shaving knives are presented at the working face of the wheel rim. These shaving knives have slots 25 for the reception of the clamping bolts, the scoring or spur cutters 26 being arranged in the openings 19, at right angles to the working face of the cutter wheel and bearing against supporting walls 27 at the rear sides of the openings 19, the projecting points or outer ends of the said scorers or spurs being transversely beveled each on one from thefront beam 3 at a point opposite one side of the working face of the cutter' wheel. The vertical side standards 34 of this frame are connected at their upper ends by a cross bar 35 and have outturned portions 36 at their lower ends and secured as by means of bolts or screws on the said beam. Inclined braces 3738, which converge upwardly, are arranged at opposite sides of the frame 33 their upper ends being united to extensions of the cross bar 35 and the said frame is provided at its upper end with bearings 39 the said bearings being formed on arms 40 which project from the front side of said frame. A rock shaft 41 is mounted in these hearings and is provided with a pair of arms 42 and also has an arm 43 at its inner end. A supporting arm or bracket 44 projects forwardly and outwardly from one ofthe standards 34 of the frame 33. At the upper end of the brace 37 is a connected to the front ends of these cross bars. Standards 34 are provided with vertical slots, 48. Bearings 49. are connected by U-bolts 50 to blocks 51, the said U-bolts operating in. the slots 48 and the blocks operating' and being vertically movable on the standards 34. These bearings are connected by pitmans52 to the rock arms 42 of shaft 41. An upper feed roller 53 is mounted in bearings 49 and one end of its shaft is extended and'is' provided with a sprocket wheel 54. A lower feed roller 55 is mounted in bearings 56at. the base of the frame 33 and has one end of its shaft extended and provided with a sprocket wheel 57. A vertically movable actuating and equalizing rod 58 operates in a guide 59 with which the frame 33 is provided, the said rod having cross bars 6061 at its upper and lower ends, the centers of the said cross bars being secured to said rod. A sprocket chain 62 connects the front ends of the cross bars and engages the front side of the sprocket wheel 54 of the upper feed roller. A sprocket chain 63 connects the rear ends of the cross bars and engages the rear side of the sprocket wheel 57 of the lower feed roller each chain is single and in effect acts as a rack bar. Hence, when the rod 58 with its sprocket chains is moved downwardly, the sprocket chains by their engagement respectively with the sprocket wheels of the upper and lower feed rollers cause the feed rollers to rotate in the required direction to move a block or stock held between them toward the working face of the cutter wheel, as will be understood.

To operate the rod 58 and, hence, cause the feed rolls to be thus operated, I provide a rock shaft 64 which is mounted in bearings 65 on one of the standards 4 and has an arm 66 at its front end and an arm 67 at its rear end, the latter being connected by a link (38 to the lower end of the rod 58. the said link including a cushioning chain (39. A weight 70 is adjustably mounted on the arm 66. Hence, the weight, through the instrumentality of the rock shaft and the link causes the rod 58 to be pulled downwardly and thus causes the feed rolls to be operated.

To enable the rod 58 to be raised so as to reset the feed mechanism for another block, I provide a lever 71 which is mounted as at 72 on the arm 44 and a chain 73, the lower end of which chain is attached to the arm 67 of the rock shaft 64, the upper end of said chain being attached to the upper side of a segment 74 with which the lever 71 is pro vided, the said segment having a grooved face for the reception of the chain. By depressing the lever 71, the weight 70 will be raised and the rod 58 will be also raised, thus causing the sprocket chainsand connections hereinbefore described to rotate the feed rollers in reverse directions. The spring 69 serves to take ofi any sudden jar that may come from the rock arm and weight during the operation of the machine. Since both of the feed rolls are positively driven at the same rate of speed and under the same strain by the action of the rod 58, the chains 6263 and the sprocket wheels 54-57 of both the feed rolls act in unison under all conditions on the upper and lower ends of the block or stock and, hence, the block or stock is fed evenly to the working face of the cutter wheel.

Since the upper feed r011 53 is mounted in vertically movable bearings, the distance between the upper and lower feed rolls may be varied according to the size of the blocks or stock and thus the carriage is adapted for feeding stock or blocks of all sizes to the working face of the cutter wheel. In order to exert downward pressure on the upper feed roller, to keep the latter in engagement with a block when the machine is in operation, I provide a foot lever 75 which is pivotally mounted at a point spaced from its ends on a block or hearing 76 which is secured on the inner end of the platform 31 near the rear end of said platform. A rod 7 7 connects the rear end of the said lever to the arm 43 of the rock shaft 41 and a link 7 8 connects the said lever, at a point near its front end, to a fixed portion of the main frame as at 79, the said link including a contractile spring 80. The tension of this spring by drawing upwardly on the front end of the lever, causes the rear end of the lever to be depressed and, hence, the link 77 and arm 43 cause the rock shaft 41 to be partly turned to depress the arms 42 of said rock shaft so that the links 52 press the upper feed roller downwardly and keep the latter in engagement with the upper side of the block or stock.

The feed rollers are provided with transverse annular channels and also with longitudinal peripheral channels to form teeth 81 on the feed rollers for engagement with the upper and lower sides of the blocks or stock. The Working face of the wheel is provided at points between the blades and scorers with radially arranged wear plates 81 which, in practice, are steel strips about an inch wide and one-fourth of an inch thick for the block to bear against, the said plates serving to prevent wear of the working face of the wheel and being renewable when worn. The depth of the cut of the machine is regulated by setting the knives. The machine makes a very clean and even cut excelsior of high grade and is capable of adjustment so line as to cut excelsior the four hundredth part of an inch in thickness without difficulty.

While I have herein shown and described a preferred form of my invention, I would have it understood that changes may be made in the form, proportion and construction of the several parts without departing from the spirit of my invention and within the scope of the appended claims.

I claim 1. In an excelsior machine, in combination with a rotary cutter having a working face on one side, a carriage opposite the working face including a frame, a pair of feed rolls mounted for rotation in said frame and each having a rotary gear element, a longitudinally movable actuating element having rack devices s aced and faced in opposite directions an arranged out of line with each other and each engaging one side of one of the rotary gear elements, said gear elements being engaged by said rack devices one on the opposite side from the other, a weight, means including a cushioning device con necting the weight to said longitudinally movable element to cause the said longitudinally movable element to move in one direction and impart feeding rotation to the rolls and means to elevate the weight and means to move said longitudinally movable element in the reverse direction to impart retrograde rotation to the feed rolls.

2. In an excelsior machine, in combination with a rotary cutter having a working face on one side, a carriage opposite the workin face and including a frame, a pair of feed rolls mounted for rotation in said frame and each having a rotary gear element, a longitudinally movable actuating element having rack devices spaced and faced in opposite directions and arranged out of line with each other and each engaging one side of one of the rotary gear elements, said gear elements being engaged by said rack devices one on the opposite side from the other, a

rock shaft having a pair of arms, means, in-

eluding a cushioning spring, connecting one of said arms to said longitudinally movable element, and a weight adjustably mounted on the other arm, to move the said longitudinally movable element in one direction and impart feeding rotation to the rolls and means to turn the rock shaft in the required direction to elevate the weight and move said longitudinally movable element in the reverse direction to impart retrograde rotation to the feed rolls.

3-. In an excelsior machine, a frame, a pair of spaced feed rollers mounted for revolution in said frame, one of said rollers being also mounted for movement toward and from the other and each of said rollers having a gear wheel, a longitudinally movable actuating element, rack elements carried by said longitudinally movable element and respectively engaging opposite sides of said roller gears, to rotate the latter in reverse direction to elevate the weight and move nected to said longitudinally movable element to move the latter in one direction, and means to move said longitudinally movable element in the reverse direction.

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

OSCAR CHAFFEY.

Witnesses:

LAURENCE (form, J r., RICHARD A. GREEN.

Copies oi this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. 0.

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