US143992A - Improvement in machines for sawing staves - Google Patents

Description

5Sheets--Sheet'1. c. MUBBUGK.

Machines for Sawing Staves. No. 143,992. Patented Oct. 28,1873- nvenior v M MM.

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C. MURDGGK.

Machines for Sawing Staves. No. 143,992. PatentedOct.28,1873.

5 Sheets--Sheet 3.

C. MURDOCK. Machines for Sawing Staves.

Patented Oct. 28, 1873.

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5 Sheets--Sheet 4; C. MUBDUCK.

Machines for Sawing Staves. N0. l43,992, Paten tedoct. 28,1873.

Inventor- WWW 5 She e ts--Sheet 5-. C MURDOGK, Machines for Sawing Staves.

Pa't e ncedv Oct. 28., 18731 a} lnvenior CHARLES MUBDOCK, OF SARNLA, CANADA.

IMPROVEMENT IN MACHINES FOR SAWING STAVES.

Specification forming part of Letters Patent No. 143,992, dated October 28, 1873; application filed I November 19. 1572.

To all whom it may concern:

Be it known that I, OnAnLns MUnnooK, of Sarnia, Ontario, in the Dominion of Canada, have made certain Improvements in Machines for Sawing Staves, of which the following is a specification The object of this invention is to improve the machines patented to myself June 19,1866, and December 15, 1868; and it consists in the construction, arrangement, and combination of the parts that make the improvements in the machine, as will bemore fully hereinafter specified in detail.

In the drawings, Figure 1 represents. the rear end of the machine, with some of the parts in section Fig. 2, a side view; Fig. 3, an up right view of the supplementary arrangement for dogging the bolt 5 Fig. 4, a sectional view of the saw, its disk, and the mode of adjusting the rock-shaft with relation to the vibrating table 3 Fig. 5, a longitudinal section; Fig. 6, a plan view of the bolt-carriage, and its relation to the vibrating table; Fig. 7, a detail of devices for giving the thickness to the stave to be sawed; Fig. 8, a sectional view of a portion of the table and devices for stopping motion to carriage; Fig. 9, a part of Fig. 8 in detail;

Fig. 10, a plan view of part of vibrating table; Fig. 11, a plan view of vibrating table and carriage; Fig. 12, a detail in section of stepbox to saw-shaft; Fig. 13, a sectional view of saw-shaft, step, stepbox, and means of adjusting the shaft in height; Fig. 14, a plan view of step-box and adjustments; Fig. 15, a broken section of bolt-carriage and devices for operating, in side view; Fig. 16, a transverse view of same, and Fig. 17, details of the frictional pulley and friction-clutch.

A represents the foundation-frame, that supports two other separate frames, A and A. Frame A contains and supports the table and carriage, and all the necessary actuating parts that produce the different motions of the table and carriage. Frame A supports the upright saw-shaft that gives motion to the saw-disk and saw, and has attached to the shaft the means for operating the vibrating table and reciprocating, carriage. a is a collar 011 the top of frame A, to keep the saw'shaft 1n position and allow it to revolve therein. B is the vibrating table, pivoted at its forward end to a transverse shaft, and upon which it freely vibrates. b is a transverse adjustable shaft in adjustable bearings upon frame A, with movable collars b b, to bear on the inside of the side pieces of table B, and prevent lateral movement in the table. The side pieces of the table B are grooved on their inner sides to receive the carriage-rack and friction-wheels 011 the reciprocating carriage, and stops or buffers, against which the project ing bumpers of the carriage strike, and stop its backward motion. The forward transverse piece of table 13, and designated as B, is curved to correspond with the circle of the saw, inclined forward to give direction to the falling stave, and at its upper and forward edge has a projecting flange, b, as seen in Figs. 8 and 10 of Sheet 4,111 order that the saw may work close to the curvature on the transverse piece, and make a better support to the bolt, and prevent its tipping while a stave is being sawed.

1 This table is preferably made of metal 5 but the side pieces may be of wood, and the forward transverse piece of metal or wood, as may be desired. b b are guides, firmly secured at their forward ends to the curved transverse piece of thetable B, and extend back the length of the tableB, and help to support the bolt from which the staves are to be sawed. b b are the stops or buffers to stop the backward movement of the carriage, and in this instance are placed upon the top of the table, but may be placed in any other position on the table where they will answer the same purpose. 0 is a reciprocating bolt-carriage, the top of which is on a line with the top of the vibrating table, and slides between the side pieces of the vibrating table. 0 is a straight rack-bar, secured on each end of carriage O, and slides freely in the grooves on the insides of the side pieces of the vibrating table. 0 0 are friction rollers attached to the rear side of the bolt-carriage, and run in the grooves in the sides of the vibrating table, to decrease friction and prevent the stopping of the reciprocation of the can riage by the accumulation of dust in the grooves ofthe sides of the table. These rollers revolve onaxles that are attached to the carriage. c. c are bumpers on the carriage, that strike the stops b on the vibrating table. C O are dogs for securing the boltblock on the carriage, and v are operated, to embrace and hold the bolt in place upon the carriage while the staves are sawed from the bolt, by the usual hand-lever,

. pinions, and connecting-bars, so that, as the lever is thrown to one side, the dogs will advance toward each other, and when the lever is moved in the reverse direction they will go from each other, and the bolt will be free. D is the upright main shaft, revolved by pulley 1, and on said shaft is the saw-disk D and saw D, firmly attached to the disk, the same as in the patent above cited, and dated December 15, 1868. D is a driving gear-wheel on shaft D, and gears into another wheel 011 a horizontal shaft, on which horizontal shaft is a cone of pulleys, 2, over which goes a belt, D around friction-pulley 3 011 a horizontal transverse shaft, cl. Thefriction-pulley 3 is in a hub that extends toward the bearing of shaft 01 in frame A, and revolves on said shaft d. On the outer end of the hub is a toothed pinion, 4,, that revolves with pulley 8, and gears into intermediate pinion 5 on a short horizontal shaft, d, which pinion gears into and drives spur-gear wheel 6, that is on a vibrating or swinging horizontal shaft, (1. This shaft d has firmly fixed to it friction-pulley 7. Friction-pulley 3, Fig. 17 on shaft (1, on its inner side, has a tapering recess, 3, in which is a friction-clutch wheel, 3, that will slide on shaft d, but is prevented from turning by the feather 3. The friction-clutch wheel 3 is forced into contact with the recess 3 in pulley 3 by the hand-lever 3 and when in such c011- tact is held there by a pivoted and notched latch, 3 Fig. I, forced down by spring 3 to hold the lever 3, forcing the clutch hard against the pulley 3, which revolves the horizontal transverse shaft (1. To release or unlatch the lever and throw the friction-clutch out of contact with the continuously-revolving pulley 8, a spiral or other spring, 3 is used which tends to draw the lever back to the position to force the friction-clutch out of contact with said pulley 3, and the horizontal shaft 61 ceases to revolve. The latch-bar 3 is forced to release lever 3 by a pix'oted trip, 3 that is forced by hand-lever 3 and rod 3 to bear upon the top edge at the outer end of latch-bar 3 and force it and spring 3 down, so that the notch in latch-bar 3 will be raised high enough to release the lever 3 when the spring 3 instantly draws it toward the side of the machine, causing the friction-clutch to be out of contact with the pulley 3. (See Fi 5.) \Vhen the frictionclutch wheel 3 011 shaft d is in close contact with the ever-revolving pulley 3,it revolves toothed pinion d, that gears into toothed wheel (1 that is fast on a horizontal vibrating shaft, (1 Fig. 7. The vibrating frame (Z that supports shaft (i and wheel d", is boxed around shaft (1, and vibrates concentric to the axis of shaft d. ()n the inner end of shaft d is a crank, i, the wrist-pin of which is attached to a box, i, sliding in a groove, 6, in reciprocatin g head i, that slides 011 guide i in a groove in the vibrating block i F is a two-legged support,

cams G. 7 on short vibrating shaft d is made to be in the legs of which are fast to frame A, and is then boxed around shaft (1, and prevents any lateral motion in shaft 61. Frame (1 with its gear-wheel d supporting-frame (Z and the reciprocating and vibrating parts, is caused to vibrate by means of the pivoted hand'lever i, with its spring-latch a: catching in indent 0c in plate 1'. 'Hand-lever i is pivoted on a horizontal shaft by a sleeve, on which is arm i, to the outer end of which is an adjustable rod, 6 with a turn-buckle, i, to adjust its length, and extending to and firmly attached to one side of the vibrating frame 61"; and on the opposite side of the vibrating supporting-frame (Z is attached one end of a spring, 13 while the other end is attached to the frame A On the sliding head i is a projecting bmnper, j, which is adjusted, by means of the hand-lever i, to strike a gagearm, j, on shaft I, underneath of and attached to the vibrating table B, and positively gages the thickness of the stave to be sawed by the adjustment of the hand-lever i to be in a fixed position on platei On each outer end of the horizontal shaft d is a toothed pinion, 70, that gears into and gives motion to the toothed wheels K, that are fast on transverse horizontal shaft G. G G are cams or eccentrics fast on shaft G, and between the toothed wheels K and frame A, and revolve with shaft G. H is a horizontal transverse axle, with friction-wheels h h on each end, and is firmly attached to the under side of the vibrating table B by arms h, so that as the shaft G revolves the friction-wheels h are always bearing upon the outer circumference of the eccentrics, and,as the shaft revolves, carrying the eccentrics bearing on the frictionwheels It, will cause the table B and carriage G to rise or fall as that part of the eccentrics that bears upon the wheels maybe more or less distant from the center of shaft G; and as the forward end of the vibrating table is pivoted and fixed, only the rear end is raised, which will be tothe extent of the eccentricity of the (See Fig. 8.) The frictional pulley contact with friction-pulley 8 on horizontal shaft I, and, when so brought in contact, revolves shaft I, which works in projecting arms on the under side of table B. Near each end of shaft I pinions 9 are securely attached thereto, and revolve therewith, and gear into and revolve intermediate gear-wheels 10, which, in turn, gear into pinions 11, that gear into rack-teeth 12 of rack-bars O, that are attached to and cause the bolt-carriage to reciprocate with the bolt thereon toward the saw by means of the gage-arm j on shaft I striking the bumper j on the reciprocating head i, which causes the shaft I to be rotated, and giving a rotary motion to the pinions 9, 10, and 11, and reciprocate the raek bar O and carriage 0 toward the saw the thickness of the stave to be sawed; and, in order to 'hold the bolt and carriage at any point of its advance in feeding the bolt to the saw, ratchetwheel I is fixed upon shaft I. This ratchetwheel has two spring-pawls, that engage the teeth of the ratchet-wheel-the one that feeds the wheel forward, designated 7, and the holding-pawl r-both bearing against the wheel through the action of the springs that force them insuch contact, and will hold the bolt carriage and prevent any backward movement thereof.

To disengage the pawls from the ratchetwheel, hand-lever O, Fig. 9, pivoted to bent arm 0that is, secured to the under side of table B by a projecting arm-is reciprocated,

which bent arm is connected to the pawls in such way as to force both of them out of contact with the teeth of the wheel, and, when so out of contact, is held by a notch, o, falling into grooved plate 0, where it is held until raised up, when the springs will force the pawls to again engage the teeth of the ratchetwheel.

Then the bolt inthe carriage has been by the succeeding vibrations of the table at each revolution of the eccentrics advanced sothat no more staves can be cut from the bolt, the projecting arms a u on the forward side of the carriage G strike against spring-catches u it under the vibrating table, which release the bars t t of the pivoted arms a u, in which the pinions 10 are journaled, and which, by the force of springs u, cause the pinions to be thrown out of gear with the racks, when the carriage is then free to be returned back to receive another bolt or block from which the staves are sawed. To throw the pinions 10 into gear with pinions 11, hand-lever V, with bell-crank v, is pivoted to arm V on axle H, and to the crank end is made fast two rods, -v t, that diverge and are attached to bars t, that connect with the pivoted arms a", in which the pinions arejournaled, and, by hearing down on the lever V, the pinions 10 will be again thrown into gear with pinions 11, and the carriage is again ready for another advance toward the saw with the bolt. In order to secure the bolt from being displaced or getting out of positionafter being advanced toward the saw, self-acting dogs 19, that are fixed upon a guard, P, in frame p, that is raised above the top of and attached to the table to allow the thickness of the bolt to freely pass under it infeeding it up to the saw at each forward feed of the carriage. Horizontally through these dogs 1), and fast therein, goes presser-bar P, extending to each side of the table B. Above the presserbar P, around the body of dogs 12, and under the cap of frame 19, are spiral springs s, which, when allowed, force the dogs 12 in contact with the forward top side of the bolt, and near'the saw, and will thereby prevent any change of the position of the bolt when the saw strikes it, or while a stave is being sawed from the bolt, as the whole power of springs s and weight of the presser-bar P is employed to force the dogs 1) into the bolt. After the saw has cut off a stave, and the table is on its downward vibration, and before it gets to the extent of its descent, bar P strikes upon the notched tops of posts P, which stops the further fall of the bar P and dogs p, while the table goes still lower, and fully releases the dogs 12 from the bolt, when the bolt is again set forward, and as the table rises the bar P is taken from the posts P, and the springs s are again forced into the bolt to hold it in place. S is a shield, made of metal and at tached to the transverseand adjustable shaft 1), that pivots the forward end of the vibrating table, and extends nearly to the inner circumference of the saw D, and is used for preventing splinters that may separate from the bolt or stave in sawing from coming in contact with the saw, or the disk which supports the saw. The transverse shaft 1) that pivots the forward end of the vibrating table, is horizontally adjusted upon the pivotal point of the table B by means of the boxes m, having screwslots m in them to permit the table to be adjusted thereon, and thereby accurately adjust the pivot-point on which the table vibrates to suit the radial distance from the pivotal point to the cut of the saw, and when so adjusted the screws are turned down and hold the box upon the table securely. The shaft]; is perpendicularly adjusted by the bearing-boxgn in frame A, sliding in groove a by means of adjustingscrews or and n, the screw or working against the lower side of the box a, and the screw 11/ on the upper side of said box n, so that the exact diameter of the cask is thereby obtained, and so as to leave the outer path of the saw at the top of the bolt open and free from contact with the saw while the stave is being cut, as seen in Fig. 4:. This adjustment is obtained by means of the Q, which is placed upon the top of the table B, with its forward projecting end q touching the saw, when the table is raised with the gage thereon, and the proper adjustment is determined. Upright shaft D, on which the saw-disk and saw are secured, is adjusted in height or laterally by means of an outer boX or shell, E, and screws 6 and 6 and an inner adjustable circular box or pot, 6, with double walls 6 and e, and oil-space 0 between them, and within this is the box 6, in which the step-pin a freely revolves. The box 0 is perforated on its sides, so as to admit oil through it from oil-space a, andthus lubricate the steppin. Box 0 has a removable bottom, 0', but so secured as not to give way to the weight of the saw and shaft that is upon it. The purpose of this remova ble bottom 0 is to facilitate the taking out of the step-pin from the box 6 and shaft D, and it is performed by first blocking up the shaft, taking away bottom 0 and then forcing a wedge, 6 into a mortise through the shaft D. As the point of the wedge is inserted in the mortise the under side of the wedge bears upon the upper end of the step-pin c and, as it is driven in, will force the pin downward out of the shaft and through the thimble or box, when a new step-pin may be put in, or other repairs made. The step-pin is circular 011 its bearing end, and bears upon a plate, '10, con

cave on its upper side to it the end of the steppin, and flat on its bottom side, and of such diameter as will freely turn in the thimble with the step-pin. This concave plate 20 is of brass or soft composition metal; the next plate below it, and 011 which it bears, is a thin disk of hardened steel, followed next by a disk of brass, and that by a hardened-steel disk, so on alternating soft-metal with hard-metal disks until the bottom one is reached, which is of hardened steel, and is made fast in the thimble to prevent its turning around in the thimble. In Fig. 12, Sheet 5, these different plates are shown in section, the brass by dark lines, and the hardened steel by white or blank space.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. The bars or guides b attached to the forward end of the vibrating table B, and supporting the bolt from which the staves are to be sawed, in combination with the reciprocat' ing carriage G, constructed and operating substantially in the manner and for the purpose described.

2. The combination of the dogs p, springs s, and presser-bar P on transverse guard P, supported on Vibrating table B, with the rests or posts P on frame A, substantially in the manner and for the purpose described.

3. The combination of the reciprocating carriage (l, friction-rollers c, and bumpers c with the grooved sides of table B and stops b there on, in the manner and for the purpose described.

4. The combination of the revolving pulley 3, having pinion 4, intermediate gear-wheel 5, vibrating gear-wheel 6, friction-pulley 7, and friction-pulley 8 on shaft I, and its train of gearwheels 9, 10, and 11, with rack-bar G and reciprocating carriage G, substantially as and for the purpose described.

5. The bolt-holding dogs 0, when arranged to be above the top, forward of, and traveling with the reciprocating carriage G, in combination with the vibrating table 13, substantially as shown. I

6. The friction-clutch wheel 3", revolving cone-pulley 3, and pinion 4 thereto attached, pinions 7.", toothed wheels K, cams G, and friction-wheels 71., in combination with the vibratin g table B, in the manner and for the purpose substantially as described.

7. The automatic setting device, consisting of the revolving pulley 8, friction-clutch wheel 3", shaft d, pinion d on shaft ('1, gear-wheel d? 011 crankshaft d and crank 2', giving a reciprocating motion to bumperj, in combination with the vibrating arm j on shaft I, constructed and operating, substantially as and for the purpose described.

8. Regulating the thickness of staves to be sawed by means of the combination of the bumper j and vibrating arm j, the hand-lever i", with its spring-catch 00 and notched plate i adjustable connecting-rod i and vibrating frame (1 operating in the manner substantially as described.

9. The combination of the lever O, pivoted to bent arm 0 and pawls 1 and r, with the ratchetwheel I, in the manner and for the purpose described.

10. The shield S, attached to shaft 1), and arranged, with relation to the saw D, substan tially in the manner and for the purpose described.

11. The adjusting of the table 13 longitudinally upon shaft b by the movable boxes m, and the shaft 1) and table 13 vertically by means of the temper-screws n and n, substantially as described, by which means both the diameter of the circle to be sawed in the stave and the table are adjusted to leave a clear space outside the saw-kerf on the upper side of the bolt, as shown.

12. In a stave-sawing machine having an upright shaft and horizontal saw, a step-box constructed in the manner, and having the means for removing the step-pin and adjusting the shaft, substantially as and for the purposes set forth.

13. The transverse piece 13 of table B, having the projecting edge I) and all its parts constructed in the manner substantially as and for the purposes described.

CHARLES MURDOCK.

Vitnesses J. A. LOUNDES, ..T. M ASON GoszLnu.

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