US720400A - Stave-cutting machine. - Google Patents

Description

"No. 720,400. PATENTD FEB. 10,1903.'

` F. T. BROWN.

STAVE CUTTING MACHNE. 'APPLI oooo oNv EEEEEEEEEEEEE oa.

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F. T. BROWN. STAVE CUTTING MACHINE.

PATEN'IBD FEB. 10,4 1903.

APPLIOATTON IE-"ILED JUNE 2. 1902.

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kNol 720,400. y PATENTED FEB..10,. 1903..A

' F. T. BROWN.

STAVE CUTTING MAGHINE.

v APPLIUATION FILED JUNE 2. 1902.

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PATENTE) FEB. 1o, 1903. r F. T. BROWN. sTAvE GUTTING MACHINE.

PPLIOATION FILED JUNI-.1 2, 1,902.

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vNirED STATES FRANK T. BROWN, OF DALE, INDIANA.

STAVYE-CU'IFTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 720,400, dated February 10, 1903. Appnmtn medium 2,1902. serial 110.109,975. (Numan.)

To all whom it may concern: l

Be it known that I, FRANK T. BROWN, a citizen of the United States, residing at Dale, in the county of Spencer and State of Indiana, have invented new and usefullmprovements in Stave-Outting Machines, of which the following is a speciiication.V

My invention relates to new and useful improvements in machines for cutting staves for barrels, kegs, tanks, &c.; and itsv object is to provide means whereby the edge of a strip of wood may be quickly and accurately curved and beveled.

A further object is to employ a carriage having novel means for feeding it toward and from the cutting mechanism.

Another object is to provide means for holding the stave securely in position during the cutting operation and automatically discharging the same thereafter.

Other objects are to provide means for adj usting the cutting device toproduce the desired bevel upon the stave, toprovide means for automatically throwing-@the carriage out of operation when the cutting of each stave is' completed, and to employ means whereby the carriage is driven in either direction from the shaft of the cutting device; and `it consists in ya construction and arrangement of parts, as will be hereinafter described, and more particularly pointed out in the claims.

In the accompanying drawings; Figure 1 is a perspective view of the complete apparatus. Fig.v 2 is a front elevation, the 'track being broken away to show the carriage-operating drum and the automatic shifting mechanism. Fig. 3 is a plan view. Fig. 4 is a section on line 4 4, Fig. 3. Fig. 5 is a plan view of the carriage with the clamping mechanism removed and a portion of the ejecting mechanism broken away to show the draw-head. Fig. 6 is a section on line 6 6, Fig. 5. Fig. 7 is a rear elevation of the cutting mechanism. Fig. 8 is an elevation of the grooved pulley.

Referring to the drawings by numerals of reference, 1 is a rectangular frame having laterally-extending arms 2, which serve to supportl a track 3, extending across the front face of the frame adjacent to the top thereof. Cross-strips 4 are varranged within the upper end of the frame 1, and a drive-shaft 5 is journaled thereon. This shaft is provided at the forward end with a circular saw 6, and a small pulley 7,'preferably formed of paper, is located atthe opposite end of said shaft. A suitable pulley 8 is arranged upon the shaft at a point intermediate its ends and is adapted to be driven inv any suitable manner. Each of the cross-strips 4 is adjustably secured at their outer ends to the upright portions of frame 1. by adjusting them vertically the shaft 5 can be arranged at Vany desired incline.

A slot 9, as shown in Fig. 2, is formed at one side of frame 1 at a point below shaft 5 and serves asga guide for a shaft 10, extending through the yframe and journaled at one end in one sideof'the track 3 and at the other end within a lever ll. This lever, as shown in Fig. 7, is pivoted to the rear end of the frame 1 and is formed with slots 12 and 13, which are adapted to receive the shaft 10 and one end of an arm 14, respectively. This armv extends laterally from a rod 15, mounted in brackets 16 at the side of. the frame. An arm 17 is arranged at the forward end of said rod and is connected, by means of a link 18, with a lever 19, pivoted to the frame. The rod-15 is also provided with an arm 20, which curves upward between the rails of the track 3.and is provided at itsend with a roller 21. A spring 22 is secured to a short arm 23, extending from the opposite sidevof the rod 15 andis connected to a guide-rod 24, mounted upon the frame 1 and serving to prevent lateral movement of the level' 19. A pulley 25 is secured upon the rear end of shaft 10 and provided in one face with a groove 26. This groove is adapted to receive the small pulley 7, hereinbefore referred to, and is of` sufficient width to permit a slight vertical movement of either shaft 10 or 5 before the pulley 7 will contact withl either side of said groove. A drum 27 lis secured upon shaft 10 at a point between the rails of track 3, and cables 2S and 29 are secured thereto and adapted to be wound thereon in opposite directions. Y

A rail 30 is secured upon one side of the track 3 and is curved toconforln with the edge of the stave to be cut. YThis rail serves as a guide for grooved wheels 3l of a carriage 32. A tongue 33 extends forward from the carriage and is connected to the cable 2S, hereinbefore referred to. Said tongue also It will thus be seen thatv IOO extends a desired distance to the rear of the carriage and is provided with a pulley 34, upon which is mounted the cable 29. The end of this cable is secured to a draw-head 35, slidably mounted within the rear end of carriage 32 and held normally retracted by means of a spring 36. A beveled arm 37 is pivoted to the forward end of carriage 32 and is held at a desired incline Yby Vmeans of a slotted link 38, adjustably secured to the forward end of the carriage in any suitable manner, as by means of a clamping-screw 39.

The carriage 32 is provided at one side with a solid top 40, which is slotted transversely, as shown at 41, to receive sliding bars 42. These bars are pivoted to the outer ends of levers 43, fulcrumed at one side of the carriage and connected at their adjacent ends by means of links 44 with a fulcrum-bar45, having its outer end arranged to operate under the rear sliding bar 42, said fulcrum-bar being forced laterally by means of a spring 46, secured to the solid top 40 and to said fulcru m-bar. Rods 47 extend upward from the top 40 and through a clamping-board 4S, arranged upon said top. Springs 49 are arranged upon these rods and bear upon the board 48, serving to hold the same normally clamped upon the carriage-top. Levers 50 are pivoted to one edge of the clamping board or member 48, and the lowerends thereof are provided with cam-faces 51, which are adapted to bear upon the top of the carriage. The upper ends of the levers are connected by a horizontal rod 52, which is also pivoted to a lever 53, fulcrumed upon the side of the clamping member 48 and extending to a point below the carriage 32. The end of the carriage serves to limit the movement of this lever in one direction and a headed rod 54 limits the movement thereof in the opposite direction, said rod being mounted in an aperture formed within the end of the carriage.

A trip 55, having a beveled upper face, is arranged upon one of the arms 2 of frame 1 at apoint slightly removed from a lug or stop 56, also arranged upon said arm. The trip 55 is adapted to operate lever 53 when the same is drawn thereover during the movement of carriage 32, and the stop 56 serves to hold said lever in position after becoming released from the trip.

Suitable brace-rods 57 may be employed for preventing lateral movement or sagging of the track in relation to the frame l, and one or two of the curved rails 30 may be employed upon the track, as desired.

In operation the rail 30 is secured upon track 3 in such a manner that the curve thereof will conform to the curve of the edge of the stave to be cut. The carriage 32 is drawn back upon the track a sufficient distance to permit the roller 21 and its arm 2O to be slightly depressed by the beveled arm 37, eX- tending from the carriage. This will cause the rod 15 to partly revolve, thereby swinging the lever 11 downward and carrying the shaft 10 and its pulley 25 therewith a suicient distance to remove the sides of the groove 26 from contact with pulley 7. The drive-shaft 5 can then be revolved without operating the shaft 10 and the carriage connected thereto. Vhile the carriage is out of operation, as above described, a strip which is to be shaped into a stave is placed between the top 40 and the clamping member 48 and the sliding bars 42 are pressed laterally thereby. This will cause the spring 46 to become compressed. The operating-lever 19 is then pressed downward, and this will cause the rod 15 to swing its arm 14 downward and will bring the outer wall of groove 26 into contact with pulley 7. Shaft 10 will thus be revolved, and the drum 27 will operate the cables 28 and 29 thereon as the same are inverted in their order of winding and unwinding. This will cause the carriage 32 to move forward upon the track, and at the beginning of such movement trip 55 will throw the upper end of lever 53 forward, thereby releasing the board 4S and permitting the springs 49 to clamp the same upon the stave and hold the sliding bars 42 in position. The carriage will be guided forward upon the curved rail 30, and the strip held within the clamp will be cut with the desired curved edge and said edge will be beveled according to the incline at which the circular saw 6 is held. When the carriage reaches the forward end of the track 3, the operating-lever 19 is released and will be promptly raised by the spring 22, which at the same time will throw the roller 21 upward into the path of the beveled arm 37 and will raise the pulley 25, so as to bring the inner wall of its groove 26 into contact with pulley 7. The revolution of shaft 10 will thus be promptly reversed and the drum 27 will operate the cables 28 and 29 thereon as the same are inverted in their o1'- der of winding and unwinding, thereby drawing the carriage back to its original position. J ust prior to the completion of the return movement of the carriage 32 the lower end of the lever 53 is brought into contact with the beveled face of trip 55, causing said 1ever to swing upon its fulcrum. The cams 51 will at the same time be pressed upon the top of the carriage and will raise the clamping member 48 and compress springs 49. As soon as the stave held between the clamp is released in this manner spring 46 expands and presses lever 45 outward, thereby causing rods 42 to slide within their guiding-grooves 41 and force the stave from the carriage automatically. The operation can then be repeated, as hereinbefore described.

In the foregoing description I have shown the preferred form of my invention; but I do not limit myself thereto, as I am aware that modifications may be made therein without departing from the spirit or sacrificing any of the advantages thereof, and I therefore re- IOO IIO

mounted beneath the clampingeboard.

2. The combination with a carriage, of sliding bars thereon, spring-operated levers for moving said bars transversely of the carriage, aclainping-board mounted upon the bars and adapted to prevent movement thereof, cams for raising said board from the bars, and a trip-operated lever for operating the cams.

3. The combination With a carriage, of sliding ejector-bars mounted upon said carriage, spring-operated levers connected to the bars and adapted to impart motion thereto, a clamping-board extending over said bars,

means for holding the board normally pressed upon the bars, cams pivoted to the board and adapted to raise the same from the bars, and a trip-operated lever for operating the cams.

4L. The combination with a frame having a track thereon and a guide-rail upon the track, of a carriage thereon,a spring-controlled lever pivoted upon the carriage, laterally-movable ejector-bars mounted upon the carriage, link-and-lever connections between said ejectors and the spring-controlled lever, a springpressed clamping-board l normally contacted with the carriage and adapted to prevent movement ofthe ej ectors, cams pivoted to the clamping-boards and adapted to raise the same, a lever for operating said cams, and a trip for operating the lever at the commencement and completion of the movement of the carriage.

In testimonywhereof I affix my signature in presence of two Witnesses.

FRANK T. BROWN. Witnesses:

WILLIAM G. HILE, CARRIE PENNINGTON.

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