US511205A - Edwin judd - Google Patents

Description

Patented Dec. 19, 1893.

lllllllllllill E. JUDD.

FEED MEGHANISM PoR WooDWoRKING MAGHINES.

(No Model.)

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UNITED STATES PATENT Orr-ice.

EDWIN JUDD, OF ST. LOUIS, MISSOURI, ASSIGNOR TO HALL da' BROWN I IVOOD WORKING MACHINE CO., OF SAME PLACE.

FEED MECHANISNI FOR WOODWORKING MACHINES.

SPECIFICATION forming part of Letters Patent No. 511,205, dated December 19, 1898. 4 Application filed April 10, 1393. Serial NoV 469,655. (No model.)

To alt whom t may concern.-

Beit known that I, EDWIN JUDD,ot' the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Feed Mechanism for lVoodworking Machines, of which the following is a full, clear, l

The invention consists in the novel con- A struction, combination and arrangements of parts hereinafter described and pointed out in the claims.

The object of my invention is to provide an improved in-feed gear for machines of, this class, whereby two or more pieces of lumber of dierent thicknesses can be positively fed through the machine at the same time.

A further object of my invention is to prof vide improved mechanism for raising and lowering the feed-rollsections at each side of the machine independently, and for impart ingto each section a yielding continuous downward pressure.

In the drawings: Figure 1 is a sectional side elevation of parts of a wood-planing machine or surfacer having a horizontal bed, the section being taken on the line A- A of Fig. 2. Fig. 2 is a sectional plan view of same.v Fig. 3 is a sectional elevation of same taken on the line B -B of Fig. 2. Fig. et is a side elevation of the parts shown in Fig. 2, with the side plate of the frame and the large gearwheel removed, looking at the side of Fig. 2, which is at the bottom of the sheet of this drawing. Fig. 5 is a detail side elevation, looking at the inner surface of the side plate of the frame, shown at the upper portion of Fig. 2, and illustrating the details of the feedroll adjusting devices. Fig. 6 is a detail View in perspective of a vertically-movable journal-box, used in a machine.

I have illustrated but two sections and the necessary adjacent parts of the machinaalthough it is clearly evident in applying the invention to machines of the class above mentioned, these parts may be duplicated any number of times so as to provide tandem feed rolls, as the builder may desire and the buyer prefer. In other cases, the feed mechanism which I here show may be substantially inverted with the parts iu the same relative position, so that the sectional feed rolls will engage the pieces of lumber upontheir under surfaces. Such changes, I desire to state, would fall within the line of skill possessed by any ordinary mechanic.

Referring to the drawings: I have deemed it unnecessary to illustrate a complete machine.

1 indicates the bed of a wood planer, or a combined Wood planer and matcher, and 2, the opposite vertical side-plates of the frame thereof.- v

The direction in which the lumber is fed to the machine is indicated by the arrow in Fig. 1.

- 3 indicates opposite vertical guide-ways formed in the opposite side-plates ofthe frame,

and having an open upper end.. f

i indicates a pair ofshort shaft sections, the outer end of each of which is mounted in a box or bearing 5, which latter is arranged to slide freely up and down in one of the guide-ways 3. The inner ends of the shaftY sections 4 are closely adjacent each other, and said sections are normally in alignment. The boxes 5 are provided with guiding-fianges (i, which engage the sides of the guide-Ways 3, and serve to guide said boxes in their upward and downward movement.

7 indicates an adjusting screw, the upper end-0f which is provided with a suitable handle or hand-wheel, and the body of which is threaded through a crosshead 8, which latter is located above the open end of the guideway 3.

As the mechanism at each side of the machine for adjusting the height of the shaft section 4, at that side, is identical, I will limit my description to the mechanism at one side of the machine. The adjusting screws 7 may be operated separately, as I here show them, or they may be connected by any known means, such as that which is now in every day use for such purposes, so as to be operated simultaneously, and thereby adj ust the height of the roll sections, for different thicknesses `of lumber. The lower end of the adjusting screw 7 is provided with a head or en largement S, which is mounted to revolve in a housing 9 formed upon or secured to -the upper side of the box 6, so that when said screw is turned in either direction the box to which it is connected, will be correspondingly moved up or down. A U-shaped stirrup 10 has the upper ends of its arms connected to the cross-head S, and its body'extends down- Ward and is connected to a weighted lever 11, by means of a link or equivalent device 12. The lever 11 `is fulcrumed at 13, and carries an adjustable weight 14.

15 indicates the under feed roll, which is of the ordinary construction, and need not be specifically descri-bed with the exception of vstating that it extends substantially across Vthe'fbed of the machine in the form of a sinrgle `long roll and is driven by means of -a gearwhee'l -or gearwheels 16 mounted upon the projectingend or ends of its shaft, meshing with another suitable gear or gears (not shown) -so that it will be revolved in the direction indicated by the arrow in Fig. Y1.

Mounted in 'bearings 17 and 'extending across the machine directly lbeneaththeloed 1 Yparallel with and in the rear of the -lower roll 15, is a long shaft 18. Keyed or otherwise -iixed yupon theshaft 18adjacent each edge of lthe-,bed @l `is a gear-wheel 19, and the lower end of a link 20 is loosely mounted `upon `said shaft exterior of each of said gear-wheels 19, -so astov lloosely engage yand rock -upon vsaid shaft-during the operation :hereinafter mentioned. A gear wheel 21 is mounted upon the long shaft of the under -roll 15, onead-jacent each of its ends, so that there are two of said gears 21 carried by said shaft. The Agears21 `carried by the underi'oll of the shaft mesh with the gears 19 carried-bythe shaft 18.

4221indicates ashaft which is cut into two sections and eachsection -is-held in alignment lby-means ofasleeve, 23'the bore of whichis looselyfengaged bythe Ainner end of one or both of thesections of fthis shaft, soi-that each section may axiallyrotate or rock-independ en-tof thefother. This shaft extends the full width of the bed 1, a sufficientdistance above same to permit thepassageof thickpieces of lumber -to'thefeed -rolls, but `ithas no fixed bearings or boxes and is free to -bevmoved 'ibodil'yforward'or-back.

Therear ends of alpair of links 24 are -riglidly'ifixed one to each section of the shaft 22, by means of set screws 25 or keys, sothat the oppositeends of said links project forward and are ,loosely mounted one upon each of the shaft sections 4 at a Ipoint adjacent lthe vertical movable boxes orbearings 5.

-126 indicates a pair of gear-wheels, one each :of-which is loosely mounted torevolve freely upon eachsection ofthe shaft 22, at aapoint Vadjacentfits outer end.

,27 -indicates a-pair of collars, one each of whiehlis-xed-upon each section of the shaft r22 adjacent the hub of each gear-wheel-26,

,for the purpose of holding said lgear-wheels in proper position upon its section.

28 indicates another pair of gear-wheels, one of which is fixed upon each shaft section 4 at a point adjacent the link 24.

29 indicates a pair of cast-iron yokes, which are substantially :l--shaped in plan View. Each one of this pair of yokes has its rear end rigidly ixed to one section of the shaft 22, so as to rock with said section, and its arms are provided with bearings 30 in which one of the short shaft sections 4 is mounted to operate. Fixed upon each of the short shaft sections 4, between the arms of a yoke 29, is a short rol-l section 31, for the purpose of positively feeding the lumber.

Suitable oilers v32 are applied to the bearings in the arms of the yokes 29,for the purpose of applying lubricant to lthe journals of the short shaft .sections 4.

Theconstructionis such that .the liniks 24 and the yokes 29 form the only support for the roll sections 31 and their shaft sections, so that although said rollseetionsmaybe adjusted up and down, they will be positively supported andpositively driven duringsuch adjustment.

`'From the above construction it will beseen that the two short roll sections are eachyieldingly mounted V.in a swinging -yoke,vso :that each may feed Vindependentpiecesof lumber, although onepiece be of considerablyg-reater thickness than the other. It will ib've@further seen that although the roll-sections are yieldingly mounted to .swing up Vand down, each of them =is also separatel-ylmovahleibodily a .slight distance 1in the Avdirection :longitudinal-of thebedof `the-machine. Itwillibe further seen Vthat Athere'is-applied-to-eachrollsection-an independent-continuonsdownward pressure, Ain-addition vto Ithe gravit-y of said sections themselves, the pressure'mechanism -for each roll-section being separate-andindependent both in construction 4and operation.

The operation-is as follows: Two pieces of lumber of dierentthicknesses beingfplaced on the under -longroll l5 and in vcontact each with one of the -roll sections 31, and -the-machine started up,the^rollsections willtassume the-position-.shownin Fig. 3, that y"is, the-one resting upon the thinncrpiece of-lumber will drop belowthe oneresting upon lthethicker piece .and -retain such position duri-ng the feeding of saidspiece of Llumberybut during suchtime each piece-Will be positivelyfed bythe roll section whichenga'ges i-t,no `matter if the thicknesses be diierent. The-shaftsections 4 are guided in'the straight vertical grooves 3, and when they aremoved upward or downward they swing'theshaft-sections22 eitherforwardor backward into Fand out of the position in whichfthey arefshownlbydotyted linesin Fig. 1. `Of course,fwhen a lthick 'piece of lumbrerpasses under @both -rollsections `31, -the .shaft-.sections `each occupy about theposition in -which-they-are r-sholw'n' -in solid lines inFig. 1, but Whena thin piece of lumber is passed under oneof said rollsections only one of the shaft-sections 22 occupes the position indicated by 'dotted lines 1n Fig. l, and the other occupies about the positionin which it is shown insolid linesin said figure, said shaft-sections 22 beingloosel y connected by the sleeve`23 in 'the manner previously described, so that said sections 22 are held in alignment, but as a whole shaft will be skewed around so as to occupy a slightly oblique position with relation to the said roll,

sections. This oblique movement is very slight, and is permitted by a slight bending or twisting of the links 20 and 24, which are .connected thereto, said shaft-sections 22 having, as previously stated, no fixed bearing. This oblique movement is further permitted by reason of the fact that the adjacent ends of said shaft-sections 22 are loosely mounted in the sleeve 23. By the words loosely mounted, I mean that the size of said shaftsections 22 is slightly less than the diameter of the bore of said sleeve, so that a slight oblique movement of each of said sections may take place in the bore of said sleeve. The roll sections are each yieldingly mounted, for the reason that said sections may' readily lift independent of each other when they run upon a piece of lumber, the yokes 29 carrying said roll sections will be slightly swung'upward, rocking the shaft 22 in its bearingsin the upper ends of the rocking links 20, and throwing the upward pressure upon the boxes 5, and upon the screws 7, the cross-heads 8, the stirrups l0, the weight levers ll, and thereby lifting the weight le a corresponding distance. This construction is such that the weight le imparts a yielding continuous downward pressure upon the roll sections, thereby causing them to yieldingly engage the upper surface of the lumberfed beneath them.

lWhen vit is desired to adjust the roll sections for lumber of greater or less thickness,

the screws '7 are turnedv in acorresponding direction, thereby raising and lowering the boxes 5 in their guideways 3, independently of the stirrups l0 and the weight levers ll, saidstirru'ps and said weight levers remaining stationary during this adjustment of the boxes 5. l Such a construction provides a very durable and efficient in-feed for wood-planners, matchers, dic., the same being of reasonable cost and not liable to become deranged during use.

Although the shaft sections 4 upon which the roll sections 3l are mounted do not extend continuously across the machine, yetI have found that these parts are amply strong for all practical purposes, the horizontal 'links 2d really forming a rigid connection between said shaft sections and the rocking sections of the shaft 22.

I am aware that a surfacing machine has been made with two vertically moving independent press-rolls on opposite sides to force the lumber upward against an endlessfeeding apron, and this I do not claim.

I am further aware that a planing machine has been constructed with separate feed-rolls mounted in swinging yokes, one in front of the other in tandem style, but as in such construction the yokes have been loosely mounted to swing upon a long shaft which is fixed so as to extend Lcontinuously across the machine in immovable bearings, the same fails to answer the purpose of my invention, and I make no claim to such construction.

I am further aware that a surfacing machine has been made with a series of short aligned gravity rolls located to move up and down independently, but in this latter arrangement there has been no provision made for any other downward pressure upon.the rolls than that exerted by the gravityof the rolls themselves, and this I do not claim.

What I claim is- A l. In a wood planer, matcher, or the like, four separate shaft-sections, two of whichpar'e mounted end to end to rock independent of eachl other and swing bodily, and the other twoof which are also mounted end to en dto move bodily but to rotate, roll-sections mounted one upon each of said last mentioned shaftsections, means which connect each of said last mentioned shaft-sections to one of said first mentioned shaft-sections, so that when said .last mentioned sections are moved bodily np and down, said rst mentioned sections will be correspondingly rocked, a sliding-bearing for the outer ends only of said last mentioned shaft-sections, links which movably support the outer ends of said first mentioned shaft-sections, gearing for imparting independent axial movement to each of said roll-sections, and means for imparting a yielding continuous downward pressure to said roll-sections, substantially as herein specified.

2. The combination in a wood planer matcher or the like, of a suitable machine frame, a pair of short shaft sections 4, bearings or boxes 5 arranged to slide freely up and down in guides in said frame and in which the outer ends of said shaft sections are mounted, means for adj usting said boxes or bearings vertically in said guides, theinner end of said shaft sections being disposed closely adjacent each other and said sections normally in alignment, a shaft 22 eut into two sections and each section held in alignment, a sleeve 23 the here of which is Yengaged by the inner ends of both sections of said shaft 22 so that ,each section may rock or have axial-rotation independent of the other, said shaft 22 extending the full width of the bed of the machine but being devoid of ixed bearings or boxes and being free to be moved bodily forward orbackward, a pair of horizontal links 24 the rear ends of which are readily fixed one to each section of the shaft 22 so that the opposite-ends of said, links project forward andare loosely mounted IOO IIO

connected to the sections of the shaft 22 to move the same and impart a continuous yielding downward pressure to said roll sections in additlon to the Weight thereof, and gearing for positively driving said roll sections, substantially as herein set forth.

3. Ina wood-planer, inateher or the like, the combination of a bed 1, opposite vertical side plates 2 of the frame vertically moving shaft boxes mounted upon said side plates, a pair of short shaft sections 4 the outer end of each of which is mounted in said boxes and the other ends of which are adjacent each other and normally in alignment, an under feed roll l5, a short roll section 3l mounted upon each of the shaft sections abovesaid under roll, a sectional shaft 22 mounted in the rear of said shaft sections, to rock and move axiallyand laterally yokes 29 fixed upon the sections of saidshaft22 and arranged to support the inner edges and ends of vsaid shaft sections, means for raising and lowering the roll sections independent of each other, means for imparting independent constant downward pressure to each of said roll sections', and means for rotating'each of said roll sections, substantially as herein specified.

4. In a wood-planer, matcher or the like, the combinationofindependently driven shortroll sections placed end to end, the side plates 'of the machine-frame having opposite vertical guide-Ways formed therein, a box or bearing 5 mounted in each of said guideways'to control the upward and downward adjustment of said roll sections, a cross-head 8 mounted above the open end of each guideway, adjusting screws 7 the upper ends of which are provided with suitable handles or hand-wheels and the body of each of which is threaded through one of said cross-heads, the lower end of each adjusting screw loosely engaging one of said boxes, U-shaped stirrups l0 having their upper ends connected to said cross-heads and their bodies extending downward and connected to a weighted lever, substantially.

as herein specified.

In testimony whereof Iaftix my signature in presence of .two witnesses.

EDXVIN JUDD.

Witnesses:

EDWARD EVERETT LONGAN, JNO. C. HIGDoN.

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