US1572007A - Stop mechanism for blank-feeding machines - Google Patents

Description

' S. C. GRUNLEE STOP MECHANISM FOR BLANK FEEDING MACHINES Original Filed Oct. 9, 1922 3 Sheets-Sheet 1 7 a c. GRUNLEE STOP MECHANISM FOR BLANK FEEDING MACHINES Original Filed Oct- 9; 1922 s sheets-sheet Int/872%? Feb. 9, 1926. 1,572,007

S. C. GRUNLEE STOP MECHANISM FOR BLANK FEED ING MACHINES,

Original Filed Oct. 9, 1922 3 Sheets-Sheet '3 44 35 I 6 I 49 48 l; I, 3

To k/ZZ who/1i. it on (1 2 cancer-n:

claimed.

Patented Feb. 9, 1926.

UNITED STATES 1,572,007; PATENT OFFICE.

sIGwALn c. GRUNLEE, O'FCHICAGO, ILLINOIS.

STOP MEGH'ANlSM vFOR BLANK-FEEDING MACHINES.

Original application filed. October 9, 1922, Serial No. 593,332. Divided and this application filed September 6, 1924. Serial No. 736,267.

, Be itjknow rthat 1 Srcwnno C. GRUNLEE, a citizen of the United States, and a resident of Chicago, in the county of Cool; and State of Illinois, have invented Improvements in Stop hfiechanism for Blank-Feeding Machines, of which thefollowing IS a specification. v

This invention. relates to stop mechanism for blank feedinginachi-nes. T he present application is filed as adivision of an application for U. S. Letters Patent heretofore filed by me in the Patent Otlice on the 9th day of October 1922, Serial No. 593,332, in which an automatic stop mechanism embodying my invention and improvements is fully shown and described asembodied in a machine for separating, feeding and gathering signatures in book binding, but is not therein separately The stop mechanism which forms the sub jectanatter of the present application, is also shown as embodied in a. machine, particularly designed and adapted for separating, feeding and gatl iering signatures in book binding. This particular use or application is, however, merely illustrative and I do not desire tol'limit myself thereto, nor to use for any particular purpose, as any im proved stop mechanism admits ofa wide.

range of adaptation and use.

The object of, the present inx' 'ention is to provide air-improved stop mechanism for blank separating and feeding machines which will be simple in construction, strong, durable and effective and dependable in operation.

To effect the objects ofthe invention, a stop mechanism embodying my invention and improvementscomprises the various features, combinations of features and details of construction hereinafter described and claimed.

In the accompanying drawings, in which my invention is fully. illustrated.

feedand stop n'l'ec hanism of themaehine, from the right side of Fig. 1.

FigureB is a fragmentary elevation from the rightside of Fig. 2.

Figure '4.- is a detached top plan view of the starting, stopping and tripping mechanism of the maehin I Figure 5 is afront elevation of the mechan ism shownin Fig. 4;. Figure 6 is an'end view from the position 66, Fig. 4. i

Figure 7 is a detached sectional end view on'the line T of Fig. 4; and

Figure 8 is a fragmentary View showing meansfor driving the feed and caliperrolls. In the drawings, a stop mechanism of my invention is shown as applied to a machine forsep'arating, feeding and gathering book signatures preparatory to binding them into book form, said machine being fully shown and described in mysa-id prior applica'tio'n, Serial No. 593,382, of which the present application is a division, and to which reference is made for a description of-parts-andfeatures herein shown but not fully described.

Describing the invention with reference to the drawings, A designates the main frame of the machine, B a separating and gathering unit mounted on said main frame,

of which there maybe any ClQ'SlI'BClllUlllbBl,

all duplicates of each other, and C, C, G", shafts which are continuous from end to end of-the'machine, and which-are mounted'in suitable hearings in the frame A. In operation, the shaft C, which may be designated the main driving shaft of the machine, is rotated continuously in the direction indicated by the arrows, Fig.1, by means of suitable driving connection with a source of power, not shown, said driving connection, comprising a counter-shaft which is driven by means of a belt applied to tight and loose pulleys 1 and 2 thereon. Said belt is adapted to be shifted fromone pulley to the other bya belt shifter 8, of any usual or desired construction. i

Oscillating movement is adapted to be imparted toth'e shaft C ,]by suitable drii ing llO;

cured to the shaft C an anti-friction roller 7 being preferably mounted on said stud. The arm 6 is designed and adapted for tripping the stop mechanism, presently described. and in practice, an arm 6 is brovided in association with each separating feeding and gathering unit 13, the relation being such that whenever the stop mechanisni oi. any unit is tripped, the whole machine will be stopped.

In accordance with usual practice, the pack of blanks, indicated at D, Fig. 1, specifically book signatures, are contained in a pack-box. designated as a whole D, from which in the operation of the machine, the bottom signatures are withdrawn singly by suitable means provided tor the purpose and are deposited upon a table 8. from which they are delivered to the gathering nieehanism. not shown, by the feed mechanism, consisting, as shown of two sets of rolls, each comprising upper rolls 5) and lower rolls 10. The upper rolls 9 of: each set are scoured to shatts ll and 12, rotatably 1nount ed in hearings in the frame of the separating unit ll. The lower teed rolls con'iprise a front set o E rolls, which are secured to a shaft lil rotatably mounted in journal boxes .l-l slidably titted to slots formed in bearing standards 16 secured to the main frame ot thc. machine. To permit the feed rolls oi each unit to accommodate themselves to the thickness ot the signatures or other blanks to he led thereby, which may vary, separate shafts 13 are provided for each unit, said. shafts being maintained at the upper limit ot their movement corre spending to contact of the feed rolls it) thereon with the trout set of feed rolls 9, by springs t7 inserted between the under sides ot the journal boxes l-l and the bottoms of the slots 15 to which said journal boxes are titted.

The lower :tced rolls 10 also comprise a rear set of feed rolls which are rotatably mounted on studs 18 secured in the outer ends of arms 19, formed in the inner ends of which are bearii'igs fitted to turn :lrecly on a shatt- 520 secured in fixed hearings in the frame of the separating and gathering unit B.

The rear set of lower teed rolls l0 held yieldingly in contact with the opposed up per feed rolls by springs 21 inserted between the outer ends of the arms 19 and the main :t'rame of the machine. Also, to provide necessary traction of the feed rolls with the blanks to be fed, all of the lower feed rolls 10 are provided with rubber treads 22.

Separate shafts ll, 12 and 20 are preferably provided for each separating and gathering unit B.

Both sets of upper teed rolls 9 and the front set of lower feed rolls 10 are positively driven. from the main driving shaft (l of the machine in the following nuumcr2-tiecured to the shafts ll, 1% and 13 respectively, so as to rotate therewith are gears 23, i-t and 25, the gears 23 am 95 meshing directly with ca 1h other while the gears 23 and 24: mesh with an intermediate gear 26 secured to a shalt 27 mounted in hearings in the Frame ot the separating and gathering unit l3 and which is continuous from end to end oi the machine. The gear 26 is positively driven from the shaft (l by means of a gear 2a secured to the shalt 27, which meshes with a gear 526 secured to the hub of a sprocket wheel 28 rotataliily mounted on a stud 28 secured in a standard 255% on the extreme end of the main frame of the machine. The sprocket wheel 28 is driven from the shaft C by means of a chain. belt 29 adjusted to said sprocket wheel 28 and to a sprocket wheel 30 secured to the shatt U. A simple and preterable construction consists in positioning the sprocket wheels 28 and 5-34) and operating parts directly associated therewith beyond the end of the main frame of the machine. The use oi. the gear 30 is necessary to secure rotation of the teed rolls 9 and it) in the proper direction.

The gearing connecting the driving sha'l't with the shaft 27 a ll'ords COUVOI'lltHi) means for speeding up the feed rolls to insure delivery of signatures or other blanks into the gathering chute. not shown, with the time limited, so that they will. clear the arms oi? the gathering meclulnism and wluucby, also, impact; oil said signatures or other blanks with the outer side wall of the gatla-ring chute will jog the blanks oi each pack.

The rear set oi lower i'ced rolls 1d are friction driven by contact with the rear set ol upper .i'ccd rolls 5). or with the blanks as they are ted between said teed rolls.

its the blanks are for 'tron'i the table 8 to the gathering mechanism, not showm they a e su iiported by a skeleton structure con-- sisting. as shown at rods or wires 3.3 and 3:5, which are positioned between the teed rolls and form an extension oi said table 8.

in order to prevent detective signatures from being i1icorporated to the bound book, which would necessarily result in a dcl cctive book. my improved machine comprises a stop llltCllfl'lllSH'i constructed and arranged to automatically stop the machine whenever a signature either thicker or thinner ll an:

the normal thickness ol the signatures on which any separating and gathering unit B is operating at a given time, passes into the ti ed rolls 9 and It), which normal thicle ness can vary only within very narrow limits, reyn'escnted by the thickness of the thinnest sheet of said signatures.

As shown, the construction and opin'aticni of said stop mechanis-zin is as tollo-wsillotataldy numnted in bez'u-ings in bra ci lt i lit)

33 secured to the rear upper edges of the frame of the separating and gathering unit B, is a shaft 3a, which extends from end to end of the machine and is common to all of the units B, secured to which is an arm, 35 which is connected with an arm 86 applied to the belt shifter 3 by a rod 37. As shown,

said rod 37 comprises'sections 87 37 the adjacent ends of. wh ch are pivoted to studs 1 As shown, the means for applying said spring 38 to said shaft' l and for relieving said shaft from the tension of said spring are as follows :Pivoted upon the shaft 34: is a lever 39, one end of the spring 38 being secured to the hub of said lever and its opposite end to the adjacent bearing bracket 33, and said lever 30 having operative engagement with the shaft 34 by means of pins 40 and 41 secured in said lever and shaft, respectively, the .relationlbeing such retract the pin 40 secured therein from the pin etli secured in the shaft 34; will relieve said shaft Sel from the tension of the spring 38 andw1llperm1t movement of said shaft in a direction to shift the driving beltf'froui iii the loose pulley 2 to the tight 'pulley '1.

accordance with my invention, also,

means are provided for locking the'lever 39 in pos1t1on-torel1eve the shaft 34c from the tension of the spring 38. As shown, said locking means or mechanism consists of an arm 12 secured to a shaft 43 mounted in 'brackets lelforming extensions-of the brackels a projection 45 on the free end of which is adapted to engage a shoulder 4L6 formed on a fin 47 on the lever 39, said projection 4L5 preferably consisting of a stud secured in the said lever arm and an antifr ct-ion roller mounted on said stud. Said .shaft,-4l-3 will preferably be mamtained yieldingly in position corresponding to engagement of said projection 45 with the shoulder. th. on the lever-39 by a spring 48 applied thereto. its shown, said spring is a coiledsprii'ig which surrounds the shaft 43, one end of -which is connected to one of the brackets 44 and the other to a collar 49 the loose pulley 2 the driving belt to a tight pulley by a spring applied thereto, thus starting the machine. As shown, said spring consists of a coiled spring 50 which surrounds the shaft lil hopposite ends of which are secured, respectively, to a collar 51 011 said shaft 3% and to the adjacent bearing bracket 33, said collar 51 being preferably secured to the shaft by means of a set screw, thus'providing for adjusting the tension of the spring As previously stated, in the contem 'ilated operation of the machine, the spring 38, when released, is'designed to turn the shaft 34 so that, through the arm 35, the rod 37 and the belt shifter 3, the driving beltwill be shifted from the tight pulley l to the loose pulley 2, thus stopping the machine.

ith the construction described, it is obvlous that, to render said spring 88 effective for its designed purpose, it will be necessary that sa1d sprmg shall be sufficiently strong to overcome the tension-of the spring50, to depress the weight of the connecting rod 37 and to overcome the friction of the various operative parts of tl1e-belt shifting mechanism. 7

To start the machine, it is merely necessary to turn the lever 39 into position to elfectengagement of the projection 45011 'thearm 42 -w1th the shoulder $6 on the fin that pivoted movement of the lever 3910* 47 on said lever, thus imparting movement to the beltshifter 3 to shift the belt from i to the tight pulley 1 and, to stop "the machine, it is n'ierely'necessary to'disengage the projection from the shoulder 4:6, permitting the spring .38 to turnthe lever 39 into the position shown in Fig. 1. and, through the pins alt), 4L1, turning "the shaftfla in the direction to shift; the belt 5 from the tight pulley to the loose pulley. My improved machine also comprises an automat1c trip mechanism, theconstruction and operation of which is as follows Secured to the shaft 43, so as to turnthera withis a trip lever, designated as a whole 1*), comprising a fixed arm 52 pinned or other wise rigidly secm'ed thereto, and a member 53 attached to the under side of said fixed member so as to be adjustable endwise there of. Formed on the outer end of said adj ustable member 53 are flanges 54, which embrace the sides ofthe fixed member 52, secured to the top edges of which is a strap 55 which extends over the top of said fixed member.

The opposite end of said adjustable member 53 is adapted to be secured to the'fi-xed member 52 by a clamping screw 56 which extends through a slot formed therein and has screw threaded engagement with a hole formed in said fixedmember52. Adjustment of the member 53 e'ndwise of the fixed member 52 is adapted to be effected by means of an adjnsting'screw 58 which has screw threaded engagementwith a hole formed in the end oi the fixed mcmhcr and which is mounted to turn freely in a slot- 59 formed in an upwardly extending; lug; or projection formed on the inner end oi said adjustable memher 53, said adjusting; screw heme; secured against endwiee movement relative to said adjustable memher hy 'l'langes til thereoin which are adapted to our hrace opposite sides of said lug or projection (30.

Cooperating with the trip lever 1G is a. push-her hi2 rigidly secured to the upper end of which is a forked plate (33 the IlOl'liQfl ends (S-l oi? which at 2 adapted to pla through holes (35 termed in the flanges i; 0a the ad iustahle memhcr 53 of the trip lever.

The puslrhar (3'23 is mounted so as to admit ot limited eudwise movement h means (it roller studs (in and hi which extend. through slots (38 and (it) :lornied in the lower end 0t said puslrhar.

The stud (3G is secured in the frame of the sepuratiiur and gathering unit 1% and the stud (ST is secured in the outer end of an arm Tl) secured to the shalt 2th are particularly Fig. 2). To provide for adjusting; the aneuin r position oi the lever arm To on the shalt 30, said lover arm is prci'eruhly clamped to said shaft by means of a clamping: screw Til, the shaft hearing in said lever heing pie :l'erahly slotted as shown at it to permit s: id hearing to he compressed upon the shalt Qt).

lleciprocatiiur movement is adapted to he imparted to the puslehar t2 hy a link 72 pirotall v connected to the lower end o'l said puslrhar and to the outer end oi: the rocl'- arm ti.

With the construction dcscrihcd, it is ohrious that at each rorolutiim ot the. shalt the cam .lon said shalt through the rollerslud {3 on the arm (3 will operate to impart oscillatory movement to the arm (3. whicln through the link 72 will impart riuriprocatinn; movement to the push-liar (r3 in the manner desired.

My improved automatic slop mechanism also comprises caliper rolls T3 and H, of which the roll 71-) is secured to the sha'tt l2 so as to rotate therewith and the roll it is mounted at the other end ot an. arm T5 secured to rotate with the shaft 20. u'cl'erahly in such n'ianner as to he angularly adjustahle thereon. As shown, the shaft hearing in said. hratjrliets 7:" is split, and said arm is adapted to he clamped to said sha it hy means of a clamping screw in a 'l'ainiliar manner.

\Vith the descrihcd construction, it is ohvious tha t as signal mics and other hlanhs are (lQilVOlGt'l from the table 8 to the gathering chute, they will pass between the caliper rolls 73, T ll, which will operate, in an oh vious manner, to term the lower roll Tl downmn'dly away from the upper roll and will impart limited roclv'inp; movement to the shaft -which will vary with the thickness of the signatures or other blanks whieh will, in turn, impart oscillation to the arm TO secured to said shatt, and through it to the pualrhar 2 and to the tort: (33 setured to the upper end thereof.

The cam on the shaft O is so timed with re tercnce to the feeding ot' the signatures or other blanks, that the upward reciprocatuni of: the puslrhar (32 will occur simultaneously with the feeding ot the signatures or other blanks from the tahle 8 lo the gathering chute and their passage between the caliper rolls 73, Tat.

Preliminary to starting a run, the stop mechanism is adjusted so that when a signature or other hlank of normal thickness is between the caliper 'olls Til, Tet, the ends (it of the fork (3?; will pass freel y through the holes (35 in the trip lever 1*]. Such adjustment is made by first securing; the arm 70 to the shaft 520 in position to el'lect approximate registration 01"; said :liorked ends with the holes or openings on with a signir ture hetwccn the caliper rolls; exact registration lining; then eli'ected hy adjusting the slide meniher 5n ol the trip lever E endwiso 1nt0 proper position by means of the adiusting screw 58. Exact registration having been elleeted, the member 53;} is then secured in .lixed adjustment hy the clamping; screw 56.

I-laring adjusted the push-bar to effect registration of the :l'orhed ends litl with the holes (35 in the trip-lever l), the lever St) is turned against the :l'orco oi the spring 138 applied to the shalt St to start the ma chine, in which position it is seciu'ed hy engragement of the projiuition on the lever Ji l with the shoulder -2l(3 on the in 4:7, oporation oi? the machine continuing without interruption so long as the signatures or other blanks passing through the feed and caliper rolls are oi normal thickness. If, however, a signature either thicker or thinner than the normal thickness of the signatures enters the caliper rolls 73, 7 51-, a corresponding error will occur in the angular movement oi the puslrhar 2 which error will he multiplied several times at the torlted ends (it, due to the fact that the distance between the guide studs 66 and 67 is only ahout one sixth oi? the distance between the fixed pivot stud G6 and the extreme upper ends of the 'lorlicd end. This departure from normal in the operation at the push her (i?) will hrin r the forked ends G l out oi: register with the holes in the trip lever 10 so thah as said push-bar is raised Ly the action of the cam t on the driving shalt G, causing the forked ends Get to strike the under side of said trip lercr at one side or the other of said holes 65, as the de tective signature is thicker or thinner than a normal, thus turning said trip lever and with it the shaft43 piivotallytodisengage the projection 45 from the" shoulder 46, thereby releasing a the: shaft 34 and permitting it to turn under the, tension ofthe spring 38 to shift the driving 'beltfro n' the tight pulley 1 to the, loose pulley-2 and i stop the machine in the inannercontemi I plated, before the defectivesignature is deivered into the" gathering chute, thus per-' .applied thereto adapted to turn on the driving means, a shaft, means connecting.

said shaft with the starter, a lever mounted to turn on said shaft,-a spring applied to said lever, pins secured insaid shaft and lever, the relation being such that when said lever is free to turn on said shaft said Plus will transmit the tension of the spring applied to said lever tosaid shaft and will turn said shaft to throw off the starterand stop the machine, and the relation being such also that when said lever is turned to relieve said shaft from the tension of the spring applied to said lever, the starting spring applied-tothe starter will turn on said driving means and start the machine, and will also turn the shaft on which said starting lever is mounted to advance the pin secured therein toward the pin secured in said lever, whereby when said'levenis released the spring applied theretolwill vturn said lever to oau'se the: pin secured therein to engage the pin secured in said shaft, "the spring applied to "said lever being sufficiently strong toi'otate said shaft .to turn off the starter and stop the" machine, alock arm pivoted adjacent to=the lever on the'starter operating shaftaanda projection thereon adapted to interlock with a shoulder on said leve-rto secure said lever in position to relieve the starter operating shaft from the tension of the spring applied to said lever, thus permitting the spring applied .to the starter to actuatethe same to" start the machine, v

2. In a machine of the type specified, the combination of blank feeding means, driving. means therefor, and starting and stop ping means comprising a starter, a spring applied thereto adapted to turn on the dr ving means, a shaft, means connecting said shaft with the starter, a lever mounted to turnon said shaft, a spring applied to said lever, pins secured in said shaft and lever,

the relation being such that when said lever is free'to'turn on said shaft said pins: will transmit the tension of the spring applied to said lever to said shaft and will turn said shaft to throw off the starter and stop the machine, and the relation'being such also that when said-lever is turned to relieve said shaft from the tension of the spring applied to said'lever, the starting spring applied to thestar-ter will turn on said driving means and start the machine, and will also turn the shaftion which said starting lever is mounted to-advaneethe pin securedtherein toward the pin secured in said lever-, whereby when said lever is released the spring applied thereto will turn said lever to cause the pin secured therein to engage the pin secured in said shaft, the spring applied to said lever being sufficiently strong to rotate said shaft to turn off the starter and stop the machine, a lock arm, a rock' shaft to which said rock lever is secured, and aprojection on said lock arm arranged to engage a shoulder onthe starting lever and to'secure said starting lever in position torelieve' the starter operating shaft from the tension of the throw-off spring. i

1 3; In a machine of the type specified, the

combination of blank feeding means,. driving means there-for, and starting and stopping "iliea'ns, means for'maintaining said driving means yieldingly off means for turning on thedriving means against the force of said stopping means, locking means adapted for maintaining said driving means on, and a trip mechanism rendered operative by'variation in the thickness of a blank for Teleasmg the stopping means, the starting and stopping means comprising a starter, at

? spring applied theretoadaptedto turn on, the driving means,- a shaft, means connect-- ing said shaft *v'vith the startei'", a lever inmn'ited to turn on said shaft, a" spring applied to said lever, pins secured in: said shaft and lever, the relation being suchtliat whensaid lever is free to turn on saidshaft saidpins 'ill transmit the tension of the spring "applied to said leverto said shaft and will turn said shaft to throw off the starter'a'nd stop themachine, and the relationbeing such also'that when said lever is turned to -relievesaid shaft fr-oin the tension of the spring applied to said lever, the starting spring applied to the starter will turn on said driving means and start the machine,

7 and will also turn the shaft onwhich said starting lever is mounted to advance the pin secured therein toward the pin secured in said lever, whereby when said lever is re- 'leasedthe spring appliedthereto will turn said lever to cause the: pin seen-red therein to engage the p n secured in said shaft, the

spring applied to said lever being sufiici'en'tly strong to rotate said shaft to turn off the starter and stop the machine, aloek lever, a rock shaft to which said lock lever is secured, and a projection 011 said lock lever arranged to engage ashoulder on the starting lever and to secure said starting lever in position to relieve the starter oper ating shaft :lrom the tension of the throw all spring, and the trip mechanism comprises caliper rolls, one of which is rotatably mounted on an arm secured to a rock shalt, a trip lever secured to the rock shaft to which the lock lever applied to the starting lever is secured, a push bar, means for supporting said push bar so that it will admit both of reciprocating and oscillating move ment, means :lor imparting reciprocating n'iovement to said push bar, the upper end of said push bar being constructed and arranged to play through a hole thrilled in the trip lever when the end of said push bar is in register with said hole, the means tor supporting said push bar comprising studs which engage slots l'ormed in said push bar, comprising a fixed stun and a stud secured in a lever arm secured to thecalipcr roll rock shaft, the relation being such that oscillation of said rock shalt will impart oscillation to said push bar about the fixed sup porting stud, means for ell'ecting relative adjustment of said push bar and the trip lever to effect registration of the upper end of said push bar with the hole :i'orn'ied in said trip lever when a blank oi? normal thickness passes between said caliper rolls, oscillation oi said push bar corresponding to variations in the thickness of the blanks in excess of prescribed limits causing the end oi. said push bar to strike the trip lever at one side or the other of the hole therein and turn said trip arm together with the rock shaft and lock lever releasing the starting lever and stopping the machine.

a. A trip mechanism for a blank feeding machine as specified in claim 3, in which the means for imparting reciprocating movement to the push bar comprises driving and rock shafts, a cam and a lever arm secured to said shafts, respectively, a projection on said lever arm which rides on the cam on said driving shaft, and connection between said levgr arm and the lower end of the push bar.

5. A trip mechanism for a blank feeding machine as specified in claim 8, in which the lever arms to which, respectively, the movable caliper roll and the movable stud for supporting the push bar are secured, comprise a lever arm which is angular-1y adjust-able on the caliper roll rock shaft to provide for adjusting the push bar relalively to the hole in the trip lever.

G. A trip mechanism for a blank feeding machine as specified in claim 3, in which both rock arms secured to the caliper roll rock shalt are angularly adjustable to prosecured to the rock shaft and a slide mcmher in which the hole is formed through which the end oi? the push bar is designed to play, means for oll'ecting adjustmentof said slide member eudwise at said fixed member, and means for securing said slide member to said fixed member in dillhrent adjusted positiom-:.

8. A trip mechanisn'i for a blank l'eeding machine as s 'iccified in claim 3, in which the trip lever comprises a fixed member secured to the rock shalt and a slide member in which the hole is formed through which the end of the push bar is designed to play, means for eil'ecting adjustment oi said slide member endwisc oi said fixed member, and means :for securing said slide member to said lixed member in dillercnt adjusted positions, the. means for etl'eeting endwise adjustment of the slide member ol? the trip lever consisting of an adjusting screw which has screw threaded engagement with a hole formed in the fixed member of said trip lever, and means for rotatablv engaging said adjusting screw with said slide member against relative endwise movement.

9. A trip mechanism for a blank :leediug machine as specified in claim 3, in which the trip lever comprises a fixed member secured to the rock shaft and a slide member in which the hole is formed through which the end of the push bar is designed to play, means for eilecting adjustment of said slide member endwise of said fixed member, and means for securing said slide member to said fixed member in different adjusted positions, said slide member comprising flanges which embace the sides of the fixed member of said trip lever and are proportioned to extend flush with the top thereof, and a strap is secured to the upper edges of said flanges which extends over the fixed member of said trip lever.

10. A trip mechanism for a blank feeding machine as specified in claimB, in which the trip lever comprises a fixed member secured to the rock shaft and a slide member in which the hole is formed through which the end of the push bar is designed to play, means for effecting adjustment of said slide member endwise of said fixed member, and means for securing said slide member to said fixed member in different adjusted positions comprising a slot formed in said slide member, and a clamping screw inserted through said slot and which has screw threaded, engagement with a hole in the fixed trip lever member.

11. A trip mechanism for a blank feeding. machine as specified in claim 3, in which thetrip lever comprises a fixed member secured to the rock shaft and a slide member in which the hole is formed through which the end of the push bar is designed to play, means for eii'ecting adjustment of saidslide member endwise of said fixed member, and means for securing said slide member to said fixed member in different adjusted positions,

' the upper end of the push bar being forked and the slide member of the trip lever comprising fianges,,both the forked upperends of said push bar and the flanges on said slidable trip lever member embracing opposite sides of the fixed trip lever member, and said flanges being provided with holes through which the forked upper ends of said push bar are adapted to play. a

.12. A trip mechanism for a blank feeding machine as specified in claim 2,-in which the trip lever comprises a fixed member secured to the rock shaft and a slide member in whichthe hole is formed through which the end of the push bar is designed to play, means for effecting adjustment of said slide member endwise of said fixed member, and means for securing said slide member to said fixed member in diflerent adjusted positions, the upper end of the push bar being forked and the slide member of the trip lever com prising flanges, both the forked upper ends of sald push bar and the flanges on said slidable trip lever member embracing opposite" sides of the fixed trip lever member, and said flanges being provided with holes through which the forked upper ends of said push bar are adapted to play, the sides of the holes in said flanges flaring upwardly from points adjacent to thelower edges of said flanges. 7

13. A trip mechanism forblank feeding machines as specified in claim 3, inwhich the distance between the studs by which the push bar is supported is appreciably less than the dimension of said push bar from the fixed stud to its free end.

14.,A trip mechanism for blank feeding machines as specified in claim 3, in which the distance between the studs by which the push baris supported is appreciably less than the dimension of said push bar from the fixed stud to its free end, and the studs which. support and guide the push bar engage the same adjacent to the end thereof to which the power is applied for reciprocatingthe same.

In witness that I claim the foregoing as my invention, I affix mysignature this 4th day of September, A. D. 1924-. J

SIGlVALD C. GRUNLEF.

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