US1104791A - Woodworking-machine. - Google Patents

Description

J. E. GIBBS. WOODWORKING MACHINE.

APPLICATION FILED JAN. 9, 1913. 1, 1 04,7 9 1. Patented July 28, 1914.

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J. E. GIBBS. WOODWORKING MACHINE. APPLICATION FILED JAN. 9, 1913.

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Witnesses Attorneys THE NORRIS PETERS (0.. PHOTO-LITHO.. WASHINGTON, D. C.

J. E. GIBBS.

WOODWORKING MACHINE.

APPLICATION FILED JAN. 9, 1913.

1,1 04,791. Patented July 28, 1914,

3 SHEETS-SHEET 3.

. Witnesses M Inventor W Attorneys TH]: NORRIS PETE RS CO.. PHOTO-LITIKZ. WASHINGTON. D. C, I

JAMES E. GIBBS, OF DIGKSON, TENNESSEE.

\VQODWORKING-MACHINE.

Specification of Letters Patent.

Application filed January 9, 1913. Serial No. 741,067.

To all whom it may concern Be it known that I, JAMES E. Glens, a citizen of the United States, residing at Dickson, in the county of Dickson and State of Tennessee, have invented a new and useful \Voodworking-Machine, of which the following is a specification.

The device forming the subject matter of this application is adapted to be employed for cutting staves from a block of material.

One object of the present invention is to provide novel means whereby the block of material is released for transverse sliding movement, at the end of each stroke of the carriage, thereby permitting the operator to advance the block of material transversely into the path of the cutting member.

Another object of the invention is to provide novel means whereby the movable grip which engages the material may be released simultaneously with the stoppage of the movement of the carriage which advances and retracts the material longitudinally with respect to the cutting member.

Another object of the invention is to provide novel means for operatively connecting the carriage with a saw actuating shaft.

It is within the scope of the invention to improve generally and to increase the utility of devices of that type to which the present invention appertains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combina tion and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawingsFigure 1 is a top plan; Fig. 2 is a side elevation; Fig. 3 is a fragmental longitudinal section on the line 33 of Fig. 1, parts appearing in elevation; Fig. 4c is a detail in side elevation, showing the trip mechanism in a difierent position from that depicted in Fig. 2; Fig. 5 is a transverse section on the line 5-5 of Fig." 2; Fig. 6 is a transverse section on the line 66 of Fig. 1; and Fig. 7 is a transverse section in the line 7-7 of Fig. 1.

In carrying out the invention there is provided a base 1 upon which are mounted transverse supports 2 and3.

Extended longitudinally of the machin and journaled for rotation in the supports.

2 and 3 is a saw shaft 4 supporting for rota- Patented July 28, 1914.

tion a tubular saw 5, the cutting end of which is indicated by the reference character 6. Upheld by the support 3 and extended therethrough and within the contour of the;

tubular saw 5 is a trough 7 Secured to the saw shaft 4 is a drivepulley 8, or other suitable means, whereby the saw shaft and the mechanism operatively connected therewith may be actuated from a prime mover.

Secured to one end of the saw shaft tis a pulley 9 about which is trained a belt 10, the belt 10 being passed about a pulley 11 secured to a shaft 12, the shaft 12 being disposed parallel to the saw shaft 1. That end; of the shaft 12 which is adjacent to the pulley 11 is mounted to rotate in a bearing 14 which is pivoted as indicated at 15 ina bracket 16, the bracket 16 being attached to the support 2. The construction, therefore,

guide 18 connected with the base 1 or sup-,;

ported in any other suitable manner.

Fixed upon the shaft 12 is a friction wheel 19 adapted to bear against a friction disk 20 secured to a shaft 21 which extends trans versely of the shafts 12 and 4. The shaft 21 is journaled in bearings 22 upheld by brackets 23, the brackets 23 being attached to the base 1.

Fixed to the base 1 is an arm 24 constituting a fulcrum for a. lever 25. The lever 25; is connected by means of a link 26 with the slidable bearing 17. A spring arm 27 (-indicated in Fig. 1) is attached to the base 1 and bears against the inner edge of the lever 25 so as to hold the friction wheel 19 nor:

mally out of engagement with the friction disk 20. A connecting member 28, which, wholly or in part, may be flexible, is united with the free end of the lever 25 and ,ex-

tends over a pulley 29 (see Fig. 6) sup-;

ported by an arm 30 connected witha brace 31 extended between tracks 32, the tracksfl32 being upheld by the supports 2 and 3, and extending the full length of the machine. 1 One end of the connecting member." 28 is;

united as indicated at 33' (Fig. 2) with the intermediate portion of a lever 34E, extended longitudinally of the machine and fulcrurned.

as indicated at 35 upon the support 3.. The

free end of the lever 34 is mounted to reciprocate in a slot 36 formed in a post 37 secured to the base 1, the post 37 being provided with a horizontal extension 38 which is connected with the tracks 32 at one'end thereof. The free end of the lever 34 is drawn upwardly by a retractile spring 39, the upper end of the spring 39 being assembled with the tracks 32 (Fig. 5).v The up ward movement of the free end of the lever 34 is limited by the engagement between the free end of the lever and the upper end, of the slot 36 in the post 37. A pedal 40 ext-ends transversely of the machine and is fulcrumed as indicated at 41 upon the base 1. An adjustable connection 42 unites the pedal 40 with the lever 34. The lever 34 is pro.-

vided with an offset arm 43 and a. connection 44 unites the arm 43 with one end of a brake lever 45, fulcrumed intermediate its ends as indicated at 46 upon one of the tracks 32, one end 47 of the lever being adapted to bear against a wheel 48 which is secured to one end of the shaft 21. A retractile spring 49 is connected with the brake lever 45 and serves to hold the end 47 of the lever in en? gagement with the wheel 48, the lower end of the spring 49 being united by means of a connection 50 with the base 1, the connection, as shown in Fig. 2, including a screw? held, slotted part, so that the tension of the spring may be adjusted.

Mounted to reciprocate upon the tracks 32, longitudinally of the machine, is a car-v riage, the carriage being a composite struc-; ture. The carriage comprises cross heads 51 and 52, (Figs. 5 and 7 the cross heads sup-'; porting wheels 53 which are adapted to en-; gage the tracks 32. The cross heads 51 and 52 are united by means of rods 54. Each cross head is equipped with a depending bracket 55 mounted to slide upon a guide rod 56, the guide rod 56 being supported in braces 56 which connect the tracks 32." A pitman 57 is operatively united, through the medium of an adjustable connection 58, with the wheel 48, the pitman being pivoted to a laterally extended arm 59, the arm 59 being supported by one of the rods 54 which ex tend bet-ween the cross heads 51 and 52.

The cross head 52 (Fig. 3) is provided with a longitudinal guide way 60 in which a rack bar 61 is mounted to slide. A retractile spring 62 (Figs. 1 and 2) is connected with the rack bar 61 and is connected with a retaining plate 63, adj ustably held by means of a screw 64 or the like upon the cross head 51. The cross head 52 is provided withupstanding ears 65 1) in which is journaled for rocking movement, a shaft 66 provided with a pinion 67 (Fig. 3) which meshes into the rack bar 61. Projecting from the shaft 66 is an arm 68. The downward swinging movement of the arm 68 under the action of the spring 62' is prevented by a stop lug'69 which upsta-nds from one endofthe rack bar 61. The rack bar 61 carries a laterally projecting grip 7 0 adapted to cotipe'rate with a. grip 71 which is fixed to one of the rods 54 (as shown in Fig. 1). Secured to the cross head 52 through the medium of a screw and slot union 73 is an arm 7 2 which supports a wheel 74.

A link 7 5 (Fig. 4) is pivotally connected with the lever 34, the upper end of the link 75 being pivotally connected with an up-.

.swinging movement of the trip 7 9 is limited by a stop block 82 carried by the extension 38. A lever 83 is fulcrumed as indicated at 84 upon the extension 38, the lever 83 carrying a lateral. finger 85 which is engaged behindthe trip 79 so as to swing the trip toward the stop block 82, the lever 83 being counterweighted, as indicated at 86, so as to actuate the trip 79.

The rods 54 which connect the cross heads 51 and 52 support inclined guides 87 slanting toward a stop 88, the stop 88 being supported by brackets 89 connected with one of the tracks 32;

In practical operation, the tubular saw 5 is rotated continuously by the shaft 4 and the drive pulley 8. The shaft 4, through the medium of the pulley 9, the belt 10 and the pulley 11 drives the shaft 12 continu-,

ously. The shaft 12, however, does not drive the shaft 21 continuously, because the spring arm 27, bearing against the lever 25, retracts Tthe slidable bearing 17 on the guide 18 through the medium of the link 26, the friction wheel 19 thus being held out of engagement with the friction disk 20, the shaft 12 having a slight transverse swinging movement with the pivot element 15 as a center. When however, the foot of the operator is placed upon the pedal 40, the pedal is tilted and the connection 28 is operated, drawing the free end of the lever 25 inwardly and sliding the bearing 17 and the shaft 12 until the friction wheel 19 bears against the friction disk 20. hen the shaft12 is operatively connected withthe shaft 21 and when the shaft 12 is rotated in the manner hereinbefore described, rotary movement will be imparted from the shaft cross heads 51 and 52 and the rods 54 which connect the cross heads. It is to be observed that so soon as the lever 34 is swung through the medium of the pedal 40, the

connection 44 will tilt the brake lever 45 upon its fulcrum 46- and withdraw the end 47 of the lever 45 from engagement with the periphery of the wheel 48 so that the wheel 48 is set free for-rotation.

The strip of timber from which the staves are to be cut is placed upon the guides 87 in abutment with the stop 88. The ends of the stick of timber are held between the grips and 71, the grip 71 being fixed and the grip 7 0 being actuated by the spring 62 to hold the stick of timber in place. When the carriage is reciprocated, the stick of timber is broughtin contact with the cutting end 6 of the tubular saw 5 and a stave is cut off, the stave dropping upon the trough 7, from which the stave may be removed, the trough, if desired, being inclined so as to discharge the stave. When the carriage moves to the left during the cutting operation, the trip 79, being actuated by the counterweighted lever 88, swings to the left and rests upon the stop block 82, the roller 81 on the trip being lowered so that it lies below the lower edge of the arm 68. When the carriage moves to. the right, the roller 74 on the arm '72 engages the trip 7 9 and raises the roller 81, the latter raising the arm 68 and the pinion 67 actuating the rack bar 61 to draw the grip 70 from one end of the bolt of timber. The bolt of timber is now free and will slide along the guides 87 against the stop 88 thereby to position a new part of the bolt in the path of the saw 5. Ultimately, the trip 79 is forced so far to the right by the action of the roller 74 that the roller 81 on the upper end of the trip no longer lies beneath the arm 68. Then the rear end of the arm 68 drops, partly due to the weight of the arm and partly due to the action of the spring 62, the latter moving the rack bar 61 to the left and causing the grip 70 to engage again with the end of the bolt of timber. The carriage now moves to the left and a new section is sawed off the bolt.

During the operation above described, that chine in Fig. 4 having been stopped at a point intermediate the ends of the stroke of the carriage, in order to show the relative positions of the parts of the machine. Fig. 4 shows the parts as they will appear when the machine is running, saving for the fact that under such circumstances the lever 34 will have been depressed so as to swing the lever or detent 76 to the right and to move the finger 78 out of the path of the arm 68. Now suppose that the operator desires to place a new bolt of timber on the guides 87 while the machine is at rest. In order to do this the movable grip 70 of course must be in a retracted position. To effect the end in view, the operator removes his foot from the pedal 40 as the roller 81 on the trip 7 9 is passing from'beneath the rear end of the arm 68. Then the spring 39 pulls the lever 34 upwardly, the link tilts the levers 76 and the finger 7 8 moves to the left and passes beneath theroller 81 and beneath the rear end of the arm 68, the roller 81 acting as a guide which serves to direct the rear end of the arm 68 onto the finger 78. The machine then stops with the parts in the positions shown in Fig. 2 and referring to Fig. 3 it will be obvious that the grip 70 will have been retracted away from one end of the old bolt. The old bolt may now be taken out and a new one may be inserted. VVhen'the lever 84 is depressed to start the machine, the detent lever 76 is swung to the rightat its upper end, withdrawing the finger 78 from beneath the roller 81 and from beneath the rear or right hand end of the arm 68. The trip 79, being actuated by the counterweighted lever 83, swings to the left against the stop lug 62 and the arm 68 drops onto the stop lug 69.

Having thus described the invent-ion, what is claimed is 1. In a device of the class described, a cutter; a carriage mounted to move adjacent to the cutter; a fixed grip on the carriage; a movable grip on the carriage; a movable member on the carriage and operatively connected with the movable grip to retract the grip; means for actuating the movable member; a detent movable into the path of the movable member to hold the movable grip retracted; means for actuating the cutter; means for actuating the carriage; and a device for coupling up and disconnecting the two actuating means, said device being operatively connected with the detent to move the detent into the path of the movable member simultaneously with the disconnecting of the two actuating means.

a 2. In a device of the class described, a cutter; a carriage mounted to move adjacent to the cutter; a fixed grip on the car.- riage; a movable grip on the carriage; a movable member on the carriage and operatively connected with the movable grip to retract the same; a detent movable into the path of the movable member to hold the movable grip retracted; means for actuating the cutter; means for actuating the carriage; a device for coupling up and disconnecting the two actuating means, the said device being operatively connected with the detent to move the detent into the path of the movable member simultaneously with the disconnecting of the twoactuating means; and a pivoted trip actuable by the carriage and coacting with the movable member to act-uate the movable member, the trip constitut actuating the trip.

.4:- In a device of the class described, a supporting structure; a carriage mounted to move thereon; a fixed grip upon the carriage; a movable grip upon the carriage; a movable member operatively connected with the movable grip; a trip pivoted to the supporting structure and coacting with the movable member to actuate the same; means on the carriage for actuating the trip; and a detent upon the supporting structure and movable into engagement with the trip and the movable member.

5. In a device of the class described, a supporting structure including a stop; a

trip pivoted to the supporting structure and adapted to rest upon the stop; means for moving the trip toward the stop; a carriage mounted to move upon the supporting structure; a fixed grip on the carriage; a movable grip on the carriage; a movable member mounted on the carriage and operatively connected with the movable grip, the movable member lying above the trip; and means on the carriage for engaging the trip to elevate the trip and to cause the latter to elevate the movable member; and a movable detent mounted upon the supporting structure and supporting the trip and movable member to maintain the movable grip retracted, the trip constituting a guide adapted to direct the movable member onto the detent.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JAMES E. GIBBS.

WVitnesses:

SELINA VILLSON, I. E. SIMPSON.

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

Washington, D. G.

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