US1669191A - Mortising machine - Google Patents

Description

0. G. EDMOND monnsme 111101111111 May 8, 1928.

I 3 Sheets-Sheet 2 Filed July 25. 1924 may m i G w 11 swim Fatented May 8, 1928.

oscAn GQ DMOND, oFsPoKA-nn, WASHINGTON;

ASSIGNOR or oivn-iiALn T 3 HITE PINE'SASK COMBANY', OF SPOKANEQWASHINGTON. :1

MORTISING aonnvn 1] nea); sled nu' 25,

The machine is designed to simultaneously punch asocket or mortise in the wood bar, at both sides thereof these mortises or sockets being adaptedto receive the .tenons of cross intermediate bars When the window sash is subsequently assembled.

By the utilization of i I y invention, provision is made for a machine which is com;

paratively.simple in construction and operation, inexpensive in cost of manui'acture rapid in the performance of its functions, reliable, and efiicient. a

The invention consists in certain novel combinations and arrangements of parts involving a pair oi opposed reciprocating punching dies andltheir operating mecha nism together with feed andstop mechanism for the wooden bar, and other features fully set forth aswill hereinafter be more and claimed. p

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my inventio'n wherein the parts are combined and arranged in accordance with the best mode I have thus far devised for the practical. application of the principles of my invention."

Figure 1 is a view in elevation at the operators side of a machine embodying my invention. 7 i t Figure 2 is an enlarged detail view; from theinner side of the machine showing the actuating mechanism for the reciprocating dies and the feed-stop device.

Figure 2 1s a transverse ,sectional view through the wheel and disk of Fig. 2 for actuating the die mechanism and stop-feed mechanism.

difffltd in this view. that i other I objects chine top l924 glf5eii al ivol 728.247.

liigure li is a vertioahtransverse sectional view of the machmelooking outwardlyat line of Figure l or line 8 of Fig. 5.

I Figuret is a view in elevation at the rear or deliveryendofthe"machine, as seen from the left in Figure l. p f Figure 5' is a top plan view ofthe ma chine. i

Figure verse sectional View at line66 showing the feed chains and adjustingfmeans therefor. Figure 7 is an enlarged detail. transverse sectional v ew at'line 7-7 of Fig. 1showing. the reciprocating dies; y

Figure 8 is a perspective view of one of the dies.

Thewvoodenisash bar is shown in cross Figure 7 between the reciprocating' dies, and the two mortises B and G atopposite sides of the bar are also in- It will be understood section at A in punched; and. the machine maybe adapted or'adjusted to various sizes ofthese bars or objects.

In the preferred form of the invention the machine is preferably made portable" and seltcontaine'd and its frame 1 which is supported on wheels 2, carries an electric motor '3 for 1 actuating tl1eseveraldevices forming the machine. Adrive shaft 4 is journal ed in bearings 511631 the 'bottomof the machine -frame and is operated from the motor shaft 6 by' the pulley 7, belt 8,' and the large drive shaft. f i A A powfer shaft 10 which extendslongitudinally of the machine is journaled in bearings 5 parallel with and above the drive shaft and is driven from the latter by drive pinion 6 is an enlarged, vertical, transor articles may be i pulley. 9 whichlatterpulley is carried by the 11 and driven gearlB which gear is loose on the powershaft forms part of a clutch device tof ee-action with a tight 95,

clutclrmem'ber 13 on th'e sha ft. By means ofthe clutclrlever 14: andconnecting link 15, the machine maybe startech'stopped and controlledby the operator.

The wood bar A tobe mortised by punching is mechanically conveyed across the maor table'l fifr'om right to left'in Fig.5,1and is entered or introduced to" the machine on theguide extension 17 under the flat spring arm 18, at the right of the machine. The spring arm is bolted to a longitudinally adjustable block 19 and the slidable block is fixed in position on the guide flange 20 of a transversely adjustable carried block 21 which latter is slidab le in the groove 22 in the top 16.

The wood bar is pushed by hand under the spring arm 18 in between a pair of endless conveyer chains 23 and 2st horizontally disposed above the top of the machine and adjustable laterally thereof. hese chains travel in opposite directions with their parallel inner and adjoiningflights spaced apart and moving in the same direction to frictionally grip the wood bar A with a resilient clamping action for the purpose of advancing the wood bar while it is free to beadvanced. While the bar positively held stationary these chains will continue to move along the sides of the wood bar until. after the punching operation when the bar is freed to advance, and then the chains again become operative to advance the wood bar.

The conveyer chains are supported and operated by two pairs of pulleys 25 25 and 26 26' fixed to rotate with the respective' vertically disposed shafts 2T 27 and 2828. The upper ends of all of the shafts are journaled in top bearing plates 29 which plates form the tops of chain frames or boxes 30 and 30 that support and guide the movements of the chains, above the table 16.

-The chains are driven by their sha ts 27 and 28 and sprocket wheels 25 and 26, the shafts as shown in Fig. extending down through the table top and within the interior of the machine frame and provided with bearing brackets 22 attached to the frame 1. A worm shaft 31 which extends transversely of the machine and is journ'aled in bearings 32 in the frame 1 is provided with a worm 33 that engages the worm wheel 34 on the power shaft 10, and gear couples 35 between the worm shaft and the two shafts 27 28 transmitpower to the latter for operating the chains.

The conveyer chains exert a resilient pressure against the opposite sides of the wood bar A in gripping it and for this purpose chains and chain frames are capable of a slight pivotal movement on their shafts 27 and 28 as a center of movement. At a suitable location from the shafts 27 and 28 each chain frame is provided with a depending lug 36 which passes down through a slot 36' in the top 16. In these threaded lugs are alined bolts 37 having a bearing in the respective brackets 38 depending from the opposite side edges of the table top, and each provided with a hand wheel 39 at its outer end. Between the bearing lug 38 and adjusting nuts 40 on the bolts a coiled spring 4:11 is interposed. By turning the hand wheels the chains andtheir frames may be swung on their pivotal centers 27 and 28 to vary the relative positions of the chains. By this means the resilient pressure of the two chains against-the opposite sides of the wood bar is regulated to insure proper action of the chains in advancing the woodv bar and to permit the movement of the chains while the wood bar is being held stationary for mnching.

As the wood bar A is conveyed by the gripping chains along the longitudinal center of the machine top or table it passes across the top and partly over an extension 42 of the machine until it encounters a stop or detent- 43 that is vertically reciprocable through a slot in the extension'and which will hereinafter be described.

A spring arm 44 disposed in line with the spring arm 18 at the longitudinal center of the machine bears upon the top surface of the Wood bar to hold it in place on the table. This arm is adjusta'bly held in a bridge bar 45 disposed transversely of the machine and above its top, and the bridge bar has end collars -16 vertically adjustable on a pair of supporting pins 4:7 fixed to the table at opposite sides thereof.

Then the movement of the wood bar is halted by the stop 43 and the bar remains stationary .for a period of'time, the two mortises B and C are punched in the opposite sides of the wood bar by a pair of dies l8 and 49, which act simultaneously.

These oppositely acting dies or punches are each reciproeable through a head as and 51, and as shown inFigure 8 each die has a shank 52 seated in a'punch bar 53 that is screw threaded and provided with a nut 54 and collar 54'.. The collars 54L are slidably supported in perforated lugs 5:3,and a coiled spring '56 on each punch bar is interposed between the nuts 5% and heads 50 51, to hold the dies normally in retracted position and, to "ithdraw them from closed position after the working stroke of the dies.

The heads 50 51 and lugs 55 are rigid with their base plates 57, 58 (Fig. 7) and these plates are. slidably adjustable in the grooved, horizontal, transverse guide plate 59. These base plates also have vertically disposed plates or flanges 57 and 58 that are guided in the grooved plate 59. For longitudinally moving the dies and their carriages in order to adjust the carriages and diesat opposite sides of the longitudina lcenter of the machine and at opposite sides of the wood bar I utilize a Wheel 60 and a right-and-left screw-bar 61 threaded in lugs 62 of the respective flanges 57' and 58 best seen in Fig. 4.

The dies are adjustable in their heads 50 51, byturning the nuts 54 on the punch bars toward or away from the longitudinal center of the machine to decrease or increase the punching movcinentof thedies 18. The supports 57 and 58 for the dies-are also ad jiistahle transversely "of the turning tl'iehand wheel (it);

The two dies are simultaneously pushed inwardly to punch aniortise in the wood bar hyincans of push bars (33 and (S-l which pm jectnyjiwardly through slots (35 of the plates S'T arnllfih and their ends are adapted to engage the outer ends of the p'ushhars.

The push bars are. each pivoted at G8 to one of the iianges? 5S and nearth ir lower ends thesehars are joined hj-"a sp v 67 which normally holds-their upper free i uds out against a stop bolt (58 in athreaded lug (39 at each side of the machine and locatcd at the outer ends of the plates 57 and At their lower ends thcse vertically disposed push bars are joined by pivoted links {Oiind '71 disposed at en'angle to their bars nnd'pivotally joined together and carryin at the r joint a roller 72. The. pivoted'push hars and their links thus forni a toggle frame which when actuated will serve to push inwardly the two dies and their punch The toggle frame is iictuatcd. iemla flangediwl'ieel 73 carried on the end ofthe power "shaft 10 and equippedwith a laterally The link projecting. roller and pinat Tel; is located in the path of movement of this rollerfas it revolves with the flanged wheel and the roller contacts at the lower edge of the link and rides thereon as'it lifts the link. The lifting of the link tends; to spread the toggle frame and swing inwardly the upper free ends oi? the "puslrhars to ma he the working stroke of the reciprocating dies. After the roller 74; passes iiis'highest point of travel. it descends and permits the s iirings and 6'?" to retract the diesand hen the toggle 'Iraine hack to inopcratiye or closed position.

The toggle iranie ment by means of a vertical, h plate 75, attached to the machineframennd ilio irniing a vertical guide way for thcroller Aiii ter the dies have punched the lnortises is guided in its more and have been withdrawn therefrom the stop ordetent 4-3- is withdrawn froni its normal elevated position "for passe e of the punchec orinorl'ised wood bar A a. it is advanced by the conveyor chains. The ha r thui-i pushed along the waybetwcen theguidc rails 76 and 77 of the extension 42, as be st se'en in Figure I y The stop 43; which is normally held in elevated position by a spring 43 as shown in Fig. 4, is withdrawn or lowered for passage of the wood bar is actuated by a double rock-arm 78 on the rock shaft '78 journaled at the underside of the extension. 42 and machine 5 by i drawing in; (ii

seenlin Fl with and cerves the "row '01: r and by turning said he rooved guide disposed" longitudinally [ofthe machine-int onesideofjitscenterfzi ndto which arm the spring 43 is connected. connecting rod '75) is'pivotcd on one end ofthis rock arm and at'it's lower eiidit-herod is connected to a lift lever 80, which latter leveris pivotedat 81 asset-n in Fig, l. The freeend of thehft lever elevated by contact therewitl'r oi? a laterally projecting pin 82 carried by a flanged wheel 72 is secured on the cndof tl'ie powersliait 10 by'a central screw or 'hoit SG. Bythis arrangement of the dish andwvli eel the latter may be turned to secure the propcijrelattire distance hetween the pin 82 of the detent -opera-ting" device andpiin i 'flfolfithe' dieopcralting inech'anisnn and after the screw 86 has been tiohtened the disk 7 \D and f wheel will cooperate at predetermined periods-for punching thefwood herand with i attachment for the 12 1 "rocatingfidics the end of the machine frame an d wh ich at tac'hnient c ar ri e's' the toggle iraine; may he -=verti cally adjusted by means of the hand whcelST andscrew bar 88, which her is ,supported in the threaded lnn'izonial lughi) on the machine frame as 4.. "A threaded yoke integral "ejected 'froin' the plate 59 rethe attaol'iinentmay be moved relatively (and in a vertical plane) lo the machine 'i'ra'nie l. v v i The wood bars are fed from right'lc 'lcjil:

in Figure longitnd'inall of the machine,

thecohreycr chains ,qrippii g onc hnr to push the wee lingbaragainst the stop 43 and in this posiion the first bar is retained while the dies recipr' cate. Then the detent or stop 4.3 is witlnlrawn and the continuously inoringchains becon'ic eilective to again pushfthc wood hair through the machine to discharge the 'inortised har and resen't the Eiollowing bar to the detent 43,, which returnsto operative position, after being withdrawn "for passageof a completed her. The feed chains are adapted "to *assert resilient pressure against the sides of thc'bnrs marine width of the bars may vary within limits ai dyet beheld by the'chains with sufiici'ent friction to feed the bars." The dies may be adjusted to punch bars of varying widthsranclthe dies may be adjusted to vary the length of their working strokes,to increase or diminish the depth of the mortise. The die supporting mechanism may be adjusted vertically to raise or lower the dies with relation to the wood bar for punching, and of course various forms or shapes of dies 48 may be used.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is- 1. The combination in a mortising machine of a work-feed mechanism comprising a table and spaced resilient means for holding the work to the table, a pair of endless, constantly moving feed chains, a detent in the path of movement of the work, means for exerting a resilient presure of said chains at opposite sides of the work, and means for retracting the detent after the iortising operation to permit passage of the work.

2. The combination with a pair of spaced, endless, constantly moving feed chains and means for exerting a resilient pressure of said chains at opposite sides of the work, a detent normally in the path of movement of the work and means for retracting said detent for the passage of the work and for restoring said detent after the passage of the work. r

3. The combination with a pair of spaced endless chains, supporting shafts and wheels therefor, of a supporting frame for a pair of shafts at one end of the chains, means for (having the shafts at the other ends of the chains, and means co-acting with said frames for exerting a resilient pressure on work between said chains.

el. The combination with a pair of spaced endlesschains, a pair of supporting shafts and pulleys for each chain and a frame for each chain and its shafts, means for driving the shafts at one end of the chains, means for laterally adjusting the frames and chains, and means co-acting with the adjusting means for exerting a resilient pressure on work between the chains.

5. The combination with a pair of spaced endless chains and frames therefor, a pair of pulleys in each frame for supporting the chains and shafts for said pulleys, of means for operating the shafts at one end of the chains, screw device connected to each frame for lateral adjustment thereof, and a spring co-acting with each screw device for exerting a resilient pressure on work between said chains.

6. The combination with a pair of adjustable cross plates each having a head and spaced lug, of a nut slidable in each lug and provided with a collar, a punch bar threaded in each nut and a die in each bar reciprocable in a head, a retracting spring interposed between each collar and lug, and means for actuating said bars for an operating stroke of the dies.

1,eee,"191

7. In a mortising machine the combination with a pair of opposed reciprocable dies of operating mechanism therefor comprising a pair of spaced pivoted push bars and pivoted angularly disposed links connected to said bars forming a toggle frame, and a rotary member carrying a contact device for intermittent co-action with said frame.

8. In a mortising machine the combina tion with a pair of reciprocable dies and a toggle frame operatively connected therewith for actuating the dies, of a guide roller on said frame and a guide plate therefor, and a rotary disk having a laterally projecting contact member thereon for 00-210- tion with a portion of the frame. 7

9. In a mortising machine the combination with a pair of reciprocable dies of operating mechanism therefor comprising a pair of spaced pivoted push bars and a spring connecting said bars, a pair of pivoted angularly disposed links pivoted at the ends of said bars and a guide roller at the pivotal connectionbetween said links, a fixed guide plate for said roller, a rotary wheel, and a I contact pin on said wheel adapted to coactwith an edge of one of said links.

10. In a mortising machine the combination with a feed mechanism, a mortising de' vice and a stop device, a power shaft and transmission supports between said shaft and feed mechanism, a driving member carried by the shaft and operative connections therei from to said mortising device, a driving member on the shaft and operating connections therefrom to the stop device, and means for relatively adjusting said driving members relatively to said shaft.

11. The combination in a mortising machine with a feed mechanism, a mortising device and a stop device of a power shaft and transmission.supports therefrom to the feed mechanism, a flanged wheel carried by the shaft and operative connections therefrom to the mortising device, a slotted disk within the wheel and fixed to said shaft and a pin on the wheel co-acting with said disk, operating connections between the disk and stop device, and means for relatively adjusting the disk and wheel on said shaft.

12. The combination in a mortising machine with a detent and means for nor-i mally holding said detent in operative position, a rock shaft and connections therefrom to said detent, a rotary actuating member and a pin thereon, a pivoted lift lever in the path of movement of said pin, a crank arm on the rock shaftand a link connecting said arm and lever.

In testimony whereof I affix my signature.

OSCAR G. EDMOND.

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