US1120120A - Woodworking-machine. - Google Patents

Description

E. L. BARNES.

WOODWORKING MACHINE.

APPLICATION FILED rnn.1s.1914.

Patented Dec. 8, 1914.

6 SHEETS-SHEET 1.

'HL NORRIS PETERS CO PHOIO4I1HD. WASHING K N. D C

E. L. BARNES.

woonwoaxma MACHINE.

APPLICATION FILED PBB.16,1914

1,1 20, 1 20. Patented Dec. 8, 1914.

"HE NORRIS PETERS C0,, PHOTOLI'I'HQ. WASHING TON. v, p

E. L. BARNES.

WOODWORKING MACHINE.

APPLICATION FILED PEB.16,1914. 1,1 20,120. Patented Dec. 8, 1914.

k 6 SHEETS-SHEET 3. /d 2 7d 7? 7d Fig.5

I n: NORRIS PETERS CO. PHOTO-LITHQ. WASH-N05,.- uu E. L. BARNES.

WOODWORKING MACHINE.

APPLICATION FILED IEB.1G,1914.

1 1 20, 1 20. Patented Dec. 8, 1914.

8 SHEETS-$11323 4.

EEL El 52 In my: '02:-

v1: NORRIS PETERS C0,. PHOTO-LITHO, WASHINGTON. 0. C

E. L. BARNES.

WOODWORKING MACHINE.

APPLICATION FILED FEB. 10, 1014.

1,120,120. Patented Dec.8,1914.

6 SHEETS-SHEET 5 LF/Q/ :1 U. Fla-7 z 9 THF NORRIS PETERS Co PHOTO-LITHU. wnr-mmnurt, u L

E. L. BARNES.

WOODWORKING MACHINE.

APPLICATION FILED mm 164 1914.

Patented Dec. 8, 1914.

6 SHEET8-SHEET 6.

"tim'rn;

ETHELBERT L. BARNES, F PORTLAND, OREGON.

WOODWORKING-MACHINE.

Specification. of Letters Patent.

Patented Dec. 8, 1914.

Application filed February 16, 1914. Serial No. 818,886.

To all whom it may concern Be it known that I, ETHELBERT L. Bunnies, a citizen of the United States, residing in Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in \Voodworking- Machines, of which the following is a specification.

My invention relates to woodworking machines adapted to finish wood-products into their desired form and more particularly to automatic machines for producing crossarms for telephone and telegraph poles, and has for its object to provide a machine of the character described, adapted to automatically chamfer or round off the weatheredge of cross-arms in such manner as to leave an unchamfered intermediate portion formed to fit a transverse notch in a telephone pole. I also provide novel means for adjusting my machine .for cross-arms of various linear and transverse dimensions.

What constitutes my invention will be hereinafter specified in detail and succinctly set forth in the appended claims.

The novel features of my cross-arm shaper are fully illustrated in the accompanying drawings, in which- Figure 1 is a plan view of the cross-arm shaper and attendant conveyors and shows a cross-arm with its forward end partially chamfered. Fig. 2 is a front elevation of the machine with a portion of the cuttercarrier removed so as to show more clearly the drive-gears for operating the live-rolls. Fig. 8 is a side elevation of the machine. Fig. 1 is a chamfered cross-arm in elevation. Fig. is an end elevation of the cross-arm shown in Fig. 4 and shows more clearly the manner in which it is chamfered. Fig. 6 is a detail sectional elevation taken on the line A-A of Fig. 1, through the center of the live-roll adjusting mechanism. This view also shows, diagrammatically, the method of driving the upper and lower live-rolls. Fig. 7 is a detail front elevation of the cutter-carrier, showing the means used for adjusting the cutters vertically and transversely. Fig. 8 is a detail plan View of the cutter-carrier shown in Fig. 7. Fig. 9 is a detail elevation, partly in section, of the trip-rolls and housing. Fig. 10 is a diagranmiatic illustration of the method employed for leaving an unchamfered intermediate attaching-space on the cross-arms.

ike numerals of reference indicate similar parts throughout the several views.

Referring to the drawings, 1 indicates the main frame or table of my cross-arm shaper and 2 the legs or supporting frame for said table 1. A slight reduction in the height of the table is indicated at P-its purpose will be indicated hereinafter. Up cast guide flanges 3 are provided along the front edge of the table 1 and form a part thereof. Adjustable rear guide-strips 1 are attached to the surface of table 1 by T-bolts in T-slots ti and are so disposed as to lie parallel to guide flanges 3, thus forming a transverse channel adapted to receive and guide a cross-arm 7 from one side of the machine to the other over the surface of the table 1.

Sprockets 8 and 9 carrying conveyor chains and 11 running in grooves 10 and 11 respectively, in the table 1, are mounted respectively on shafts 12 and 13 rotatably held in their respective bearings 11 and 15 as illustrated in Fig. 2. In order that the cross-arm may be delivered to the shaper at a speed conforming to the peripheral speed of the live rolls it becomes necessary that the conveyor sprocket shaft 12 be geared with said live rolls, all of which receive their motive power from one common drive shaft. An initial drive shaft 16 carrying a drive pulley 17 is horizontally disposed beneath and parallel with the table 1, and is revolubly held in bearings 18 attached to the supporting frames 2. A secondary drive shaft 19, carrying bevel pinions 20 and 21 and a bevel gear 22, is vertically disposed above and with itsaxis perpendicular to the initial drive shaft 16 and is revolublv mounted in bearings 23, 2 1 and 25 carried by the machine. Bearing 23 is carried by a bridge member 26 connecting the supporting frames 2. Said gear 22 is rigidly mounted on the secondary drive shaft 19 below and adjacent to hearing 23 and meshes with a bevel pinion 27 mounted on the initial driveshaft 16, thereby imparting rotary motion to said secondary drive-shaft 19 when power is applied to the initial drive-shaft 16 through the medium of its drive pulley 17,

which may be connected by means of a belt with an engine or other source of motive power.

Bevel pinion 20 keyed onto the secondary drive-shaft 19 and meshes with and drives a bevel gear 28 rigidly mounted on a shaft 29 carrying a spur gear 30. Shaft 29 is horizontally disposed and revolubly mounted in bearing 31 carried by the table and bearing 32 carried by a bearing bracket 33 mounted on the supporting frames 2.

Three live rolls 34, which hereinafter will be designated as the lower live rolls, are mounted on and rotate with shafts carrying spur gears 36, 37 and 38. A spur gear idler 39, mounted on shaft -10, is also provided. Shafts 35 and d0 are revolubly mounted in bearings 41 carried by hearing bracket 33 and bearings 42 carried by the main frame and are so disposed relatively as to permit gears 37 and 38 to mesh with and be driven by gear 30,--the spur gear idler 39 meshing with and being driven by gear 35, and meshing with and driving gear 36. Referring to Fig. 6 it will be seen that this arrangement of gears will impart to the lower live rolls a rotary motion of the contraclockwise direction as viewed from the front of the machine. As the lower live rolls are to be used desirable that their connecting gears be so proportioned as to permit of a uniform peripheral speed for said rolls. As previously stated, it is preferred that the conveyer sprocket wheel 8 have the same peripheral speed as the lower live rolls therefore, I provide a sprocket wheel 43 mounted on shaft 12 and a sprocket wheel 44- mounted on shaft 35 and a connecting sprocket chain 45. Although the foregoing arrangement of lower live rolls and conveyer will carry the cross arms 7 over the surface of the table 1 these alone will be insuiiicient to properly hold the cross arms in position for chamfering; thereforelprovide two upper live rolls 46 mounted on sha ts 4:7 rotatively held in bearings d8 carried by an adjusting frame a9. Adjusting-frame supporting rods 50 are perpendicularly attached to the rear edge of table 1 and to hearing bracket 33 and are braced one against another by a cover plate 51 to which the upper cm. s of said support ing rods are attached. This plate 51 also carries the hereinafter mentioned bearing 25 for shaft 19. Supporting rods 50 are threaded to receivenuts-52 having flanges 53 adapted to carry the adjusting frame e9. Vertical adjustment of the adjusting frame &9 is accomplished by rotating the adjusting nuts 52 and in order ated in unison they are provided with sprocket wheels 5 attached by means of set screws 55 and connected by a sprocket chain 56, which also passes over drive sprocketwheel 57, mounted on a crank; shaft held as conveying rolls it is that these may be operrotatively in bearings 59 on adjusting frame d9 and operated by a crank 60.

Shafts d7 carry spur gears 61 which mesh with and are driven by a spur gear 62 mounted on a shaft 63 rotatively held in bearings 64 on adjusting frame ,29. Shaft 63 carries a gear 65 which meshes with the aforementioned bevel pinion 21. The bevel pinion 21 is slidably mounted on the secondary drive shaft 19 and is caused to rotate therewith by a feather 66 which slides in a featherway 67. This method of mounting the bevel pinion 21 is necessary to permit vertical adjustment of the adjusting frame. Bearing 2a. which is attached to the adjusting frame 49 controls the vertical movement of said bevel pinion 21 which rests upon it.

The upper live rolls and their drive-gears just described are required to be of the proper dimensions to procure the same pe-- ripheral speed for the upper live rolls as for the lower live rolls.

After passing between the upper and lower live rolls the chamfered cross arms 7 pass onto a removing conveyer chain 11 having attachments 68 adapted to carry the cross arms along a conveyer trough 69 to any desired location. To prevent the chain attachments 68 touching the cross arms 7 until they have passed entirely clear of the upper live rolls 46, table 1. is depressed at 1 as shown in Fig. 2.

The foregoing description covers the crossarm conveying mechanism which may be altered in many ways as for instance, by reducin g or increasing the number of live rolls or by altering the arrangement of gears or conveyers.

I shall now describe the chamferin mech anism and the means for automatically controlling it. V

Chamfering cutter blades 70 are bolted onto two sides of cutter heads 71 by means of T-bolts 7 2 held in T-slots 7 3. The cutter heads 71 are rigidly mounted on vertically disposed cutter-spindles 7e rotatively held in boxes 75 adjustably attached to trans versely disposed brackets 76 of a rockingframe 7 7 having trunnions 78 vertically disposed at its upper and lower extremities. The trunnions 7 8 of the rocking frame 77 are pivotally mounted in upper and lower bearings 7 9 and respectively. Bearing 79 is carried by the cover plate 5 and bearing 80 is ca .ied by a bracket 81 attached to the supporting frames 2. Lower pivot boxes 3:2 are adjustably attached to a transverse bracket 83-attached to the rocking frame 77 and are provided with bottom adjusting screws 3e having hand-wheels 85. Adjusting screws 8d are adapted to receive the lower end of spindles 74; which rest upon wearing disks 86. In order to hold screws 34 against undue rotation, boxes 82 are slotted at 87 and prov ded with clamp screws 88 adapted to hold the adjusting screws S 1- rigidly in place after adjustment. For r0 tating the cutter blades, pulleys 89 are slidably mounted on spindles 74 and rotate them by means of feathers 90 slidably held in feather-ways 91 in spindles 7 L 'lransverse adjustment of boxes 75 and 51:3 on their respective brackets 76 and 83 is accomplished by means of T-bolts 02 held in slots 03. This transverse adj ustment of the cutter spindles is necessary in order to decrease or increase the length of the uuchamfered space.

The driving mechanism for operating, the cutter blades consists of bevel gears 01- mounted on the initial drive shaft 10, and which are held in mesh with and drive bevel pinions 05 which are mounted on vertical shafts 00 disposed above and perpendicular to the axis of the initial drive shaft 1.0. Shafts are mounted rotatively in upper and lower bearings 97 and carry drive pulleys 08 disposed between said upper and lower bearings 07. Motive power from pulleys 08 is transmitted to pulleys 89 on the cutter spindles througl'i the medium of belts 09 which are kept taut by means of idler pulleys 100 over which they pass. Said idler pulleys 1.00 are rotatively mounted in adjustable housings 101 carried on grooved transversely disposed guide bars 102 and are adjusted by means oi nuts 10? on adjusting screws 103, which pass through lugs 101 carried by the machine frame, and are attached to the housings 1011.

In the inannthicture o't cross-arms it is necessary to chamfer the weather edge as shown in 4t and 5 at 7 leaving}; an uncham'lered portion, as at 7". I accomplish this ehamfering autoIrmtically in my cross'arm shaper by means of a. trip mechanism adapted to hold the left hand cutter in working position as shown diagrammati' cally at 70 in Fig. 10 and at the same time holding" the right hand cutter in an inoper ative position, a. at 70,until the cliamter 7 has reached a. desired and predeternlined point at which the unchamfercd portion starts. The trip mechanism now reverses the positions of the cutters placing the right hand cutter in operative position as shown at 70 and removing the left hand cutter to an inoperative position, as at 70, thus leaving an unchamfered portion, as shown at 7*.

The automatic trip mechanism is operated by means of a trip roller 106, journaled on a shaft 107 held between the forked ends of a trip bracket 108 having attached to it a trip lever 109. The trip bracket 108 is pivotally mounted on a. shaft 110 carrying a hold-down roll 111 and held in adjusting bracket 11?. pivotally mounted in a housing or case 113, on a rod 111. In order to accommodate the various thicknesses of cross arms the adjusting bracket 112 may be adjuster l by means 01 screw 115 which is provided with a. lock nut 1115 am is held by a bracket 11.7 attached to the hoasinc 1133, a lock bar 1520 is provided for holding up the roll 111 and .is fastened by screws 121, an adjustment for thick cross arms being indicated by dotted .lines at 111.

To place the unchamil'ered space centrally on a cross arm it becomes necessary to move the trip roll along, the table to the proper position. To facilitate the adjustment of the trip-roll as just mentioned the housing is provided with gibs 118 engaging the edge of the table 1 and adapted to grip said table edge by means 01 screws 110.

'lrip bar 10!) carries an adjustable slide block 122 from which depemls a swivel joint 12 5 connecting the slide block with a. vertieal connecting rod 121, which is also connected by means of another swivel joint 195 with a short operating arm .120 mounted on an operating shaft 127 journaled in bear ings 1:53 and 12-0 attached respectively to the liner and to the machine suppi'ir'ling ilirame J. A. weight lever Z130 carrying a weight 1 31 is mounted on the operating: shaft 127 diametrically opposite the arm 1:20 and tends to hold the trip roll 10-") in a down position. A rocking! frame iiperatine arm 132 is mounted on the (meratingr shattt 1:17 nearly opposite the nearest cutter and is connected with a lug 12:33 on bracket (#3 by connecting rod 135.

it obvious now that a cross arm being, conveyed through the machine would ha ve its weather edge chamlered by the left hand cutter until the cross arm has reached a point where the trip roll would be allowed to drop, whereupon the trip mechanism would cause the left hand cutter to rerede and the right hand cutte would liuish chamicring the remaimler ol' the crossaurm. leaving an intervening unchamterial space.

Although I have described my invention as a machine adapted to chamler (n.'oss-arnls, 1 do not desire to limit the rai'ige and operation of the machine to that one product, but on the contrary desire to inclui le variously chaurlered and finished articles of wood in which the chamlering or other linish may be intermittent as for instance stairnewels, table legs and balusters. By altering the shape of the cutter blocks, intermittent grooves or flutes may be produced as well as arious other shapes, and molding, etc.

What I claim, is-

1. A Wood-Working machine comprising in combination a conveyer, a pair of cutters mounted rotatively upon cutter-carrying spindles carried in a pivotally mounted rocking frame, means for adjusting the height o1. said cutter carrying spindles,

use

means for adjusting and setting said spindles with reference to the pivotal center of the rocking-frame, and means actuated by the passage of said Wood-products to rock said rockingframe so as to introduce first one and then the other of said cutters into operative contact with said Wood products.

In a wood-Working machine of the character described a vertically disposed rocking frame, having transverse brackets provided with horizontally disposed slots, and provided with an upper and a. lower trunnion by means of which the frame is pirotally mounted in the machine, bearings adjustably attached to the brackets by means of bolts passing through the slots, two outter carrying spindles revolubly mounted in the bearings so as to be in coaxial alinement with the trunnions and disposed one at each side of the axis of said trunnions, a pulley slidably mounted on and feather-keyed to each of said spindles, and an adjusting screw carried by the lower hearing of each spindle and adapted to vertically adjust the spindle Without altering the height of the pulley thereon.

8. In a machine of the character referred to, in combination, a rocking frame, revolving cutters mounted in said rocking frame at opposite sides of the axis thereof, means for driring said cutters, a guideway ad- 'acent said cutters and extending transiiy of the axis of said rocking frame, nd means for rockingsaid rocking frame .0 alternately more said cutters into the oprating; position, said means being; con- .d by the material passing along said machine of the matically controlled by the movement of the material passing along said guideway, substantially as described.

5. In a. machine of the character described a vertically disposed rocking frame pivotallyniounted in the machine upon a vertical axis, bearings carried by said rocking frame, cutter carrying spindles rotatively and vertically mounted in said bearings, pulleys slidably mounted on the spindles and means for Vertically adjusting the spindles Without altering the height of the pulleys, in combination With a rocking-frame actuating mechanism comprising a housing, a U shaped frame pivotally mounted in the housing on a horizontal axis, a roller carried horizontally by the U shaped frame, a tilting frame pivotally carried by U shaped frame, a roller carried horizontally by the tilting frame, an arm carried by the tilting frame, means for limiting the movement of the U shaped frame and means connecting the arm of the tilting frame with the aforementioned rockingf ame so that any vertical movement of the rollers and arm Will tend to rock the rocking-frame as described.

In a machine of the character described and having a cutter-carrying rocking-frame, a rockingframe actuating mechanism comprising a housing, a U shaped frame pivotally mounted in the housing on a horizontal axis, a roller carried horizontally by the U shaped frame, a tilting frame pivotally carried by the U shaped frame, a roller car'ied horizontally by the tilting frame, an arm carried by the tilting, frame, means for limiting the movement of the U shaped frame and means connecting tlr arm of the tilting frame with the aforementioned rockin" rame so that any yerti' cal movement of the rollers and will tend to rock the rocking'frame as described.

in testimony whereof I. affix my signature in the presence of two Witnesses. l

ETHELBERT L. BARNES. i i itnesses G. BLAINE NISSEN, HAZEL A. Amrsrnons.

copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Eatents.

Washington, i3.

Images