US1016945A - Leather-board machine. - Google Patents

Description

R. A. LANCEY.

. LEATHER Boum MAGHINB.

APILICATION FILED JARS* 1911. Y l 1,016,945. Patented Feb. 13,1912.

4 SHEETS-SHEET 1.

R. A. LANGBY.

LEATHER EGARD MACHINE.

APBLIUATxoN FILED mme. 1911.

1,616,945, i Panam-ed Feb. 13, 1912.Y

i SHBETB-BHEBT'S. Y

@Inf/6695 i M @n/ff i 5W/fw @fw y R. A. LANCEY.

.LEATHER BOARD MACHINE.

APPLIGATIQN PILED uma. 1911 Patented Feb. 13, 1912.

4 snBnTs-sanm a." A

@Mesem 1),! Qn. m.. O Aw G R. A. LANCEY. LEATHER 13mm) MAGBINVE.. PrLIoATIox FILED-rml 1911.

Patented Feb. 13,1912.

4 SHEETS-SHEET 4.V y 131' .6

sever the stock after it has collected for automatically UNITED STATES PATENT OFFICE. t

MARION L. SPAULDING, OF

nosToN, MASSAGE usarse, cornmnnns nolnolnnsr- Ness UNDER; 'ri-1E rima-NAME am) STYLE orv J'. sraummo a sons comrsNY,

0F ROCHESTER, NEW i HAMPSHIRE.

LEATHER-BQABD MACHINE.

Specification of Letters Patent.

Application led January 6, 1911. Serial No. 601,193.

To all whom -it may concern:

Be it known that I, RoswELL A. Lancer, a citizen of the United Statesz residing at Townsend, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Leather-Board Machines; and I do hereby declare the followin to be a full, clear, and exact description o the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to leatherboard ma chines and more particularly to mechanism severing and removing the sheet of stock from the collecting roll after a predetermined thickness of stock has been collected upon the roll.

he ob'ect of the invention is to provide novel an improved mechanism 'which will operate in a reliable and uniform manner to ipon the roll to a predetermined thickness and to strip the severed stock fromthe roll without' injury thereto.

To these ends the invention consists in the features and combinations of arts hereinafter described and referred'to 1n the claims, the advanta s of which w`l be obvious to those -slslle in the art fro the .following description of the machine embodying the invention.

The various features of tne invention will be readily understood from an ins eclfion of. the accompanying drawings and t e following description of the construction illustrated therein.

In the drawin Eigarel'is a rear elevation of a leathersoard machine ,showing the preferred form of thereto. Fig. 2 looking toward. the rightin Fig. 1. Fig. 3 is a vertical sectional view showin the construction of the stripper'plpbe. Big. 4 a vertical sectional view on line 4 4; Fig. 1.

the maention applied Fig. y5 is a lrtiallou "tudinall section throughthe leetiigol Fig. 6 is a cletailed lan `view nf the mechanism for actuis' a partij.; side elevation Y y through the hollow journal i'lected upoxhthe the drawings is provided with the usual felt roll 1 about whlch the stock carryingV felt band 2 travels and is also provided withl a collecting roll `orc'ylindel- 3vwhich rests upon the felt roll 1 and is driven by frictional engagement therewith, The collecting roll is ournaled \in bearings formed in bearing locks 4 which are mounted to slide vertically on the ways 5 in the usual manner. The pulp stock carried by the felt 2 collects upon the roll 3 and successive layers of the vstock are Wound upon the roll until Ya evlnder of the desired thickness is forme thereon. During the collection of the stock upon the collectlng roll, the roll gradually rises, the bearings 4 sliding freely on vthe ways 5 as the thickness of the stock increases. As thus far described, the machine is of the usual construction and operates in the usual manner.

In accordance with the present invention the stock collected upon the collecting roll is severed by a knife mounted within the roll which is automatically actuated'when a predetermined thickness ot stock has collected on the roll and the severed sheet of stocklis stripped from the roll by tion at the proper time. M l* In thenconstruction shown in the dna'wings the knife blade 6 is secured upon a knife bar 7 which is mounted to move radially of the collecting roll. The knife bar is rovided with ribs 8 which are Iitted to side within guideways 9 formed ina supporting plate 10 which 1s secured within the collecting roll. The blade 6 normall the periphery ofthe roll and is through 'a narrow slot in the'perip series of togles 11 connected to an actuatin bar 12. T e bar 12 is connected by means lo.

a link 13 with a. rod 14 which extends of the roll and with the lower rojected ery by a is connected at its outer end end of a lever 15. The lever'.V ,is Iactuated at the proper time' to project an Yretract the knife any friggin.v 'Y controlled `thickness of the stoel: clcollecting roll. The supporting plate 101s secured to the collecting roll by means of Sf'rv\\- ll which project a stripper plate` which is automatically thrown into opera- Patented4 Feb. 1.3. 1912.

Cit

y lies within inwardly through counter-sunk holes in pro pectxng shoulders 102 formed integrally on each end of the plate 10 and are threaded etlOS in the rol 3, asis clearly shown in Fig. 5. The supportin late, the knife blade, the knife bar an tlic knife; bar aotuating mechanism which is mounted on the supporting plate can be removed as an entirety by loosening the screws. 101 and draw ing the plate 10 out through the longitudinal opening 104 (Fig. 4) in the roll 3. 'The 'knife and the mechanism for operatin it, which is supported by the plate 10 within the opening 104 can thus be readily inserted and removed through said opening. The outer face of the plate 10 isv a. partially cy lindrical surface of the 'seme curvature as the roll 3 so that when the plate 10 is in place within the openin 104, it completes the peripheral surface o the roll 3 over the opening 104, leaving but a narrow slot at its side for the knife blade 6.

The mechanism for actuating the stock severing knife comprises u cam 16 arranged to engage a roll carried by the upper end of the lever 15. The cam is 'formed on e sleeve 17 `'which is mounted in a bearing 1S and loosely surrounds a -continuously rotat ing shaft 19. The inner end of the sleeve 17 is provided with one member 20 of n clutch, the other member 21 of which is formed on al sleeve 22 which is lwyed.l to turn with a. slide on the shaft 19. The clutch members 20 and 21 are normally disengaged so that the cam 16 remains stationary in position to hold the stock severingbladc re tracted within the periphery of t e collect ing roll. When the stock is collected upon the collecting roll to a predetermined th1ckness, the -clutch members are engaged and the cam 16 is given a. single revolution to advance and retract the knife 6, and then the clutch members are again disen ged and the mechanism which controls their engagement is reset.

l'n order that the mechanism for actuating the knife may be properly timed with relittion to the rotation of thc frictionally driven collectingr roll, the the collecting roll. The mechanism for thus driving the roll in the construction shown comprises e sprocket chain 23 assing over a sprocket Wheel on the end of t c collecting roll shaft and over a sprocket wheel 24 which is connected with the shaft 19 through bevel gears 25. y The sprocket wheels and gears arc so proportioned that the shaft 19 makes one revolution for cach revolution f the collecting roll. V

The mechanism for controlling the engagement and disengagement of the clutch mombers 20 and 21 comprises s. lcvcr 26, the np- Vper end of which isprovidcrl with n yoke embracing the clutch member E21 and onrrysetting slide in its retracted shaft 19 is driven from clutch member. The lower end of the lever is connected with a spring 28 which tends to force the clutch members into engagement. The clutch sleeve 2Q is held in retracted position against the tension of the spring 2S le?v e latch 29 andresetting slide 30. The lute bar 29 engagts n. finger 31 connected to the rear side of 'e resetting slide. A pin 32 on the upper end of the lever 26 engages a. lug Blfldprojecting from the front side of' the s i e. l When the latch bar '29 is raised the resetting slide 8O le released so that'the slide and the clutch sleeve 22 are free to move toward the right n Figf under the influence of the spring 28. W n this occnrs,`therefore, the c utch members are engaged and the knife actuating cam is rotated. When the latch bar 29 is raised to release the clutch sleeve 22 a supplemental latch 34 (Fig. 8) is pressed up against the underside or the nger 31 by the spring 35, the latch 34 being so arranged that it projects slightly Abeyond the engaging face of the latch bnr Q9. As the resetting slide 30 movestoward the right in Fig. G and left in Fig; S,A the finger 31 slides freely over the upper end of the latch 84.` During the first half of the revolution of the cam sleeve 17, the resetting slide 30 is moved toward the left in Fig. 6 by a com 36 secured to the sleeve. This movement of the slide carries the end of the finger 31 to the right of the latch A34 in Fig. 8, so that the latch rises into position to retain the re- Y osition. At this time the latch bar 29 is stil in its raised osition. As the revolution ofthe com sleeve and' shaft 19 is completed, a cam 37 on the clutch sleeve Q2 engages a. pin 38 on the slide 30 and, the pin 38 being held fast retracts the clutch sleeve thus disengaging the clutch member and stopping the rotation of the knife nctuating cam. A safety 'stop bnr 39 actuated by the lever 26 may be arranged to engage a rib 4() on the back of the cam disk 18 to revcnt the running forward of the cam a ter the clutch hns been disengaged or to arrest the rotation of the com in ense the clutch members should not be disengaged for any reason.. After tbc resetting slide has been retracted und hitched in position by the latch 3l, and thc clutch members have been disengaged, down into position in front of the lingcrl pushing;r the hitch 34 down below the finger 3l, as indicated in Fig. S. The resetting the hitch bar 20 moves slide then moves forward slightlyto bring the number of revolutions oi the collectingV ing pins 2T for engaging the rear side of the roll required, the latch bar 29 is'so connected the colleetin v the knife 6, the

' block the axis of the collecting riphery of the abutment roll is concave lon- ,the ends of the with the collecting, roll thatfi'tis operated b the upward movement yot' the roll. In t. e construction shown the devices connecting the latch and collecting roll comprises bur 41, the ends of which ure supported upon rods 42 rising from the bearing blocksy of the collecting roll. This bur carries ou ruljusteble screw 42, the upper end of which 1s arranged to engage e lever 43. The lever is iivoted at one end to n fixed bracket 4l an is connected at the other end to the latch bar 29 by a link 45. The'verticnl posit-ion of the collecting roll and of the ber 41 de ponds upon the thickness of the stock colected upon the roll and by adjusting the screw 42, the connections between the roll and latch 29 may be adjusted to throw the knife operating mechanism into o eration when any desired thickness of stock lios been collected upon the collecting roll. When the stock has been severed by the knife and removed from the roll, the roll returns into engegemeutwith the felt roll 1, allowing the latch 2oreturn into active position and the I' ating mechanism will be held out o faiV n-unt1l the predetermined thickness of utoiclk:v is again collected upon ro In order t at dthe Vstoclr vmuy be properly und evenly cut by the radial movement of roll 46 is s0 arranged that hery frms'en abutment or cutting or supporting the materiel against the outward thrust of theknife as the knife is forced throu h the material. This roll\ its peri `may be cylindrical in form and may have its axis ztrrnnged'parallelA to the axis of the collecting roll in which case theA knife will act to sever the `'stock simultaneously throughout the length 'of the cylinder collccted on the roll. It is preferred, however, to so arrange and 4shiipe the abutment roll that the knife und r'oll willen-act to secure n progressive cuttin since this insures a more Aeven and uni' crm cut and requires less powersi operating the knife. Thisfeonstruction and arrangement constitutes one of the features ofthe invention. In the construction shown the abutment roll 46 isF arranged with its axis inclined Vsomewhat to roll und the pegitudinully of the roll so that it will engage Athe edge of the knife progressively when the knife is in its rejected position. The roll 46 is journalcd) in bearings li? carried by yokes 48 which ,are Ypivotully mounted on collecting roll. The outer ends of the yokes 48 are connected with supporting rods 49, the length of'which may be adjusted by turn buckles .50' to vary the inclination of the roll or to `bring it to the proper height with relation to the collecting roll. v'The roll is preferably driven from the felt roll 1 by n. belt 51.

. parte v' thelit the cam After the cylinder Vof'sto-k collected on the roll 3 has beenscvered by thegcttel binde (l, the sheet of stock thus formed lis stripped from the roll hy u stripper or de# fleeting platte :'52, The plate` 52 is carried by arms 53 which are udjnstnbly connected with supporting nrnls l-l secured to u rock Y A shaft 55. T he rock shaft 55 is 'mounted brackets 56 secured to the bearing blocks 4 so that the stripper )late rilicsnnfl `falls with the collecting rol The strpperplute is nornmlly held in u raised' orinuct'ive pol, sition by a latch bolt S which underlies theA front end of nn firm secured to the rock shaft 55, (Fig. 1). The latch `bolt ,Wis 30 connected by n link 59 with the upperfend of n4 lever (il). the lowerend of which arranged to be engaged and zcpernteldbyJ the block (il to which the lowerend Vof the knife actusiting lever is connected. lVhen 35 the lever 15 is rocked to actuate the knife, the lever 60 is operated against the tension, of u spring 62V to, retract "the bulto?. This puts t e condition of permissiveoperation. tvthais time the slit formed Vinig() the stock in the collecting roll is not inept. siticn to receive the ed of the ,s trilzvper2i plate anxjhe plate should therefore be retained i fits upper Eosition unt-ilthis slit comes underuthe'edge of the pleteV und slficuld 95 then be. loweredto allowttliered the,` plate to ass through the slit an engage the perip ery ofthe colleetingfcll. Mecha` nisln is, therefore, provided for thus controlling` and timing the enga ment ofthe 10o stripper platewith the ro Y. In the construction shdwn this mechpnism comprises a timing cern 63 secured t the collector-,roll shaft und' arranged to nder-lie u roll 642 which is mounted upon 'en erm 65 secured 105 to the shaft 55 which'earries the stripper plete. VVhenthe pinl 5T is retracted to rei. lense the stripper lute, the rolLGl rides.,A on the cam 63 untilJ the end 66 of the com; y passes frolm und r the roll and lelllwtthe. 11o stri per p atei oen' gement wit` t .colllectillg roll. 'The cnmgils Shcped'to lower `the stripper plateas the split formed in the, y stock by the knife comes into register with the edge .of the plate. per plate has been loweredv it should remain in lowered position until the collecting. *i rolllhas made a complete revolutionfso as to completely stri the sheet ofV stockfrom the roll and shenl Ythen be raised into active A position to fellow the fresh stock to celectl. uonthe rollin After the roll 64 has passed' o the end 'cfhe cemrthe cern 63' should therefore heV rendered 1inactive until the collecting eylindcrhas made e cornY lete 126 revolution and theflatch "in 57 Yhas en released I -eedytwsupport estripper-plnte 'Y when 1t is again raised. For thus rendering the c sqnactive and then resetting the willy uct when the After the strip 115` stripper plate 1s again' released, the following mechanism is provided. The roll 64 is carried by aetud 67 mounted to slide in the end-of the arm G5. A tin er 68 pro-l 6 jects downward from the stud I 7 into osition to engage the cams (il) and 70. l hen the roll 64 passes off the end 66 ot the cam G3, the tingcrGS is brought into osition to be acted upon by the cam 69. cf'ore the cam G3 comes into position to en a e the r'oll- 4, the can: 69 acting on the e t side of the linger o8 shifts the roll toward the left so tha it is ont of the path of the cam 63. This movement of the roll brings it into the path of s cam 71. The cam 1 is so arranged that it will lift the roll 64 and arm 65 as the rotation of the collecting roll is completed. Meanwhile the knife actuat ing lever has been returned to normal csition and thc latch boit 57 has bccnrecased so that it snaps in under the end of the arm 58 alien the cam 71 rocks the shaft 55 and raises the stripper plate. After the cam 71 has lifted the stripper plate,4the cam V70 engages the right. side of the linger 68 and shifts the roll 64 into positionabove the timing cam 63 so that the engagement of the stripper plate will bev plroperly timed when itis next released by t e Withdrawal of the bolt 57. y

In order that the stock may pass freely over the stripper plate without injury to the face of the stock or danger nf the stock adhering or .sticking to the plate, means are provided for blowing a series of jets or ribbon of air between the surface of the plate and the stock. t As shown, the stripper plate is hollow `to form an air chamber.v 2 which is .connected through a pipe 73 and valve 74 with a source of com ressed air. A series ofeholes 75 are fumier in the front face of the plate near its lower edge and are prefer'- ably inclined so that the air passing t rough them is directed obli uely toward the lower edge of the plate. 'l iis air blast effectively prevents adhesion ofi-he stock to the` surface of the stripper plate and is also directed against' the line of cleavage between 'the stock and the periphery of the collectin roll so that the stock is stripped cleanly an uniformly from the roll. Y A

The valve 74 which' controls the supplg of air to the stripper plate is normal y eld closed by a spring` 76 acting on the valve rod 77'. The valveis opened to supply air in the chamber within the stripper plate when the knife actuating mechanism 1s thrown into o eration and is released to cnt oil the supp y when the stri per plate is raised by a cam slide 78 undery' stem 77. The 'cam sli e 78 is connected to the link 79 with the upper end of the lever Y60. YWhen the lever 60 is actuated to withanw am latch mais? the .am slide 'rs a operated to open the valve 74. When the` ,comlnnatiom a vertical] moving collecting the end of the valve,

latch bolt 57 snaps undr the arm 58 as the stripper plate is raised the cam slide is returned to normal position thus closing the valve 74. A delector roll S0 may be mounted above the stripper plate 72 to direct. 'the sh'eet stripped from the collecting roll toward the rear of the machine. T he sheet stripped from the collecting roll is turned over as it is delivered by the stripper plate and` roll 80 so that the surface that. is next to the collecting roll is uppermost as the sheet comes from thc machine. A delivering table or conveyor may be provided for receiving the sheet as. it comes from the machine. V

While it is preferred to employ the specific construction and arrangement of the parts shown and described,r it will be underlstood that this construction and arrangement is not essential to the broader featuresv of the invention and ma be varied or moditied without departing t erefroxn.

Having explained the nature and object` of the invention, what is claimed ist-- 1. A leatherboard machine, having, in combination, a collecting roll, a knife within the roll, mechanism for actuating the knife, 'and a roll arranged with its axis at an inclination to the axis of the collectin rolll and having a longitudinally concav periphery for proressvely coperating with the 'edge of the nite in severing the stock, substantially as described.

2. A lcntlicrboard machine, having, in

roll, a felt roll on whic the collecting roll rests, a knife mounted in the collecting roll,

un abut-ment roll against which the knife cuts, and mechanism for projecting and retracting the knife, substantially as described.

3. A leatherboard machine, havin in combination, a collectio roll, a kni o for severing :the stock on tio roll, a stri per late, and means for directing a blaat o air tween the plate and stock, substantially as described. y

4. A leatherboard machine having, in combination, s collecting roll, a stripper. plate, and means fordlrecting a blast o air over the surface of the plate toward its aotive edge, substantially s described.

5. A Leatherhead` machine, having, in combination, aeollejetng :oligo knife mounted in the roll. mechanism for astanti the knife, a stripper pistoia cam on ther' for timing the stripper pla devices foi` rendering thc cam inactive a r itlms thrown the stripper plate into-ol'igrntioxrl and means for throwing the stripperiplate out of operation and for resetting said devices after the collecting roll has com leted a single revolution, substantially as escrihed.

A leathertloard machine, having, in combination, a collecting roll, a knife monnt- -the roll for returning: the stripper plate to scribed.

, elined todrect the air toward the vloiver combination, a felt roll, a `collecting roll ed within the collecting roll, mechanism for actuatingr the knife controlled by the thickness of material collected on the roll, means for holding the stripper plate away from the roll which are rendered inactive by the knife actuating mechanism, a'timing cam on the roll for controlling the stripper plate when the holdingr devices are', rendered inactive, devices for rendering the timing cam inactive after it is operated tomove the stripper plate toward the rotl` and cams on normally position and res-ct said devices after the roll bas made a single revolution, substantially as described. 4

7. A leatherlioard machine, having, in

combination, a collecting roll, means 'for severing the stock on the roll, a stripper. plate for stripping the stock from the roll, a series .of holes alon" the st ripper plate near itsV active edge, an( means for blowingr air through said holes, substantially as de- A leatherlioaid machine, having, in combination,` a collecting roll, means for severing the stock collected on theroll, a stripper plate for strippingr the stock from the roll, au air chamber at the rear of the late, and holes leading from the air chainerto the snrfaceot' the plate which are inedge of the plate. substantially as described.

9. A leather-hoard machine, having, in combination, a felt roll, a collecting roll resting on the felt roll, a knife mounted within the collecting roll, mechanism for actuating the knife comprising a clutch, a latch for holding the clutch out of operation, and devieesbetivecn the collecting roll and latch for actuating the latch, substantially as described.

10. A leathcrboard machine, having, in

resting on the felt roll, a k'nife mounted within the collecting roll, mechanism for aetuating: the knife driven from theicollecting roll including a clntch,a latch for holding the clutch out, of action, and devices between the latch and collectio roll for withdraw, ing the latch through te vertical n'iovement of the roll, substantiaily as described.

ll. A leatherboaral,,machine/having, ju, mmbinattion, ac'ollecting roll, a'kiiife 'for severing the stock on the collecting:` roll. a stripper and mech. :iism for releasing 4the` stripper, and separa.e mechanism for timing the operation of the stripper, substantially as descrilied.

l2. A lcathcrboard machine hai ma; in .':ombinatiom a collecting roll, a knifet'oe' severing the stock on the roll, a clutch tor throwing the knife into and ont of operation controlled hy the thickness of the material the stripper ill i ed with the clutch controlling mechanism on the collecting mit, a stripper for stripping the stock from the roll after it is cnt, i

13.' a vitamin.la` mman@ having, in

combination, a collecting roll, a knife for Severin the stock on the the thickness, stripper, a clutch for t'hrowin theknife into operation and for putting tie stripper4 in condi-tion of rmissive operation, and a ,timing device or controlling the time of the operation of the stripper,'substantially as described.V Y

14 A 4leatherboard machine having, in combination, aeolleeting roll, a knife cop- 'erati'ng'with the roll, means for operating the knife controlled by the thickness of the material vcollected on the roll including a clutch, a stripper, a detent for supporting it; ont of operative position, connections between the detent andthe knife for releasing the stripper, and a cam causing thestripper to engage the roll a't th'eproper time to strip the severed stock therefrom,substantially as' described.`

V15. A leatlierboardimachine having, in combination, a collectingr roll, a knifescotpel'atingr'wit'h the collectin'gtroll, mechanism for "actuatngtlie kn'ife vfrom the collecting roll controlled by' of the material thereon, n.45

`roll incllidii'ig a clutch and clutch operating!l i mechanism controlled h v th e thickness of the material collected on the roll, a stripper, means fm1 holding the, stripper in inoperative position connected with the clutch controlling mechanism and released by the knife, a cam operatively connected with the stripper causing the collectingl roll at. the proper time after the severing cut is made to engage the stock on the rollsatfthe nut and to remain in contact stripper to engage tlie` with the roll for a complete revolutionthere of, acting thereafter to lift, the Stripper ont of contact; with the collecting.,y roll, substan tially as described.

16. A leatherhoard machine having. in

comliinatioina eollectingroll, a` knife eafpl erationwitli lthe collecting roll, mechanism for actuating the knife from the. collecting' roll int-hidinga clutch and clutch operating mechanism controlled by the thickness of the material Gillet-ted on the roll, an abutment roll against ,which the knife operates, the knife actuating v its connection with the collecting roll to make itsscvering cut whenit is opposite the abutment roll, a stripper, rmeans for holding imperativi position connectanfl released by the knife, a cani operatively eomuwted ii-ith ti'ie stripper causing the tripprr to engag'the,rullectingJ-oll at `the proper time after -the severing cut is madel mechanism hein" timed-,bv`

lao

to engage the stock on the roll at the out and to remain in contact with the roll for a complete revolution thereof, acting thereafter to lift the stripper out of Contact with the collecting roll, substantially as described.

17. A leatherboard machine having, in combination, a collecting roll,.means for sev- @ring the Stock 0n the roll, a stripper plate for stripging the stock -from the roll, con` nections etween the stripper and the severing means for putting the stripper in condition of permissive operation and means for determinin the timing of t e stripv er actin to hol it in contact with the co lecting ro l darin a complete rotation thereof for thereafter iftng it therefrom and restoring it to the position of inoperativeness, substantially as described.

18. A leatherboard machine having, in combination, a hollow cylindrical collecting roll having a longitudinal opening therein, a stock severing knife, and mechanism for operatin it located in said openin and adaptedto inserted and removed t erethrough, substantially as described.

19. A leatherboard machine having,- in combination, a collecting roll, a knife within the roll, mechanism for actuating the knife', an abutment roll a inst which the knife cuts located alongsi e of the collecting roll,

andV mechanism controlled by the thickness of the material collected on the collecting roll for throwing the knife into o eration, said knife and abutment roll having provision by virtue of which the knife is caused to cut acro the roll progressively in severing the stock, substantially as described.

20. A leatherboard machine havin in combination, a collecting roll, a knife within the roll, mechanism for actuating the knife, and an abutment roll arranged with its axis inclined to the axis of the collecting roll so as. thereby to cause the knife to cut progressively across the material in severing the stock, substantially as described.

21. A leatherboard machine having, in combination, a collecting roll, a knife mounted in the collecting roll, a stripper plate for stripping the severed stock from the collecting roll, and connectedmeehansm operating automatically upon the collection of a predetermned thickness of stock on the collecting roll to actuate the knife to sev.1 thr stock thereon and to cause the stripperflalafq to engagerfthe collectingroll and stri e stock there m,

substantiall as descri ed.

ROSWldrLL A. LANCEY. Witnesses A:

N. D. MoPnalL,

Gnonor. E. Srannms.

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