US1041302A - Sheet-feeding mechanism for printing-presses. - Google Patents

Description

C. M. KNEPPLER. SHEET FEEDING MECHANISM FOR PRINTING PRESSES.

i APPLICATION FILED 0GT.12. 1910.

1,041,302, Patented Oct. 15, 1912.

6 SHEETS-SHEET 1.

ffy-W C. M. KNBPPLER.

SHEET EEEDING MEGHANISM EOR ERINTING PRESSES. APPLICATION FILED ocT.1z, 1.910.

l ,041, 302;. Patented` Oct. 15, 19:12.

6 SHEETS-SHEET 2..

BrMik-M QQLA rilililiulililiil. E

i: Illnlllllllllll Ml C. M. KNEPPLER. SHEET SEEDING MEGHANISM FOR PRINTING PRESSES.

APPLICATION FILED 001.212, 1910.

Patented Oct. 15, 1912.

WIr/v W? e.. 7 l f By A TTUR/VEY G. M. KNEPPLER. SHEET EEEDING MEGEANISM EOE PRINTING PRESSES.

APPLICATION FILBD'OGT. 12, 1910. A

Patented Oct. 15, 1912.

6 SHEETSHSHBBT 4.

Qta'

fg. y M

QM/fw. Y

G. M. KNEPPLER.

SHEET FEBDING MBGHANISM POR PRINTINGPRESSES.

APPLIogTIoN FILED 00T. 12, 1910. f

Patented Oct. 15, 1912.

SHEETS-s112151 ATTo/m/Er l o. M. KNEPPLER. SHEET FBEDING MEOHANISM FOR PRINTING' PRESSES' APPLICATION FILED 00T. 12I 1910.

1,041,302.l Patented 0ct.15,19 12.

6 SHEETS-SHEET 6.

AUD/MEV l CHARLES M. KNEPPLER, 0F NEW YORK, N. Y.

SHEET-FEDING MECHANISM FOR PRINTING-PRESSES.

antrace.

Specification of Letters Patent.

Patented Oct. i5, 1912.

Application'iled October 12,` 1910. Serial No. 586,768.

TocZZ wi'om it may concern:

Beit known that I, CHARLES M. KvNnr- PLER, a citizen of the United States, and a resident of New Yorlnborough of Brooklyn,

in the county of Kings 'and State of New York, have made and invented cert-ain newand useful Improvements in Sheet-Feeding Mechanism rfor Printing-Presses, lof which the following is a specification.

My invention relates to sheet feeding mechanism for printing presses of the type designed to print upon separate and distinct sheets lOfpaper as distinguished vfrom presses designed t'o-print upon a continuous web, the saine comprising devices whereby the separate sheets may be conveniently supplied to the press in comparatively small quantities for Vcontinuous operation, or, as

analternative method, supplied in quanti- 2() ties of a definite number of sheets for an edition of'predetermined size; devices for feedingl the sheets separately from the coll. lection ofl sheets above referred to to the printing mechanism of the press; and devices for controlling the feeding mechanism so that the separate sheets may be advanced vtoward. the printing mechanism unifornil and at a proper rate; all as illustrated in the accompanying drawings, described in the following specification, and particularly claimed in the concluding claims. r

In the drawings: vFigure 1 is a view showing my improve-il feeding mechanism as seen in side elevation; Fig. 2 Ais a view showing the sainefin plan; Fig. 3 is a view lshowing the saine in end elevation as seen from a position-to the right of Fig. l; Figpa is a view showing a section upon a vertical central plane extendii'ig longitudinally of my improved feeding mechanism; Fig. 5,is a

view taken upon a transverse vertical planey indicated by the line 5-5 Fig. 1 Ylooking toward the right as indicated by the arrow in said figure; Fig` 6 is an enlarged det-ail view showing a portiifof the mechanism for advancing the sheets toward the printing mechanism; Fig. 7 is an enlarged detail view corresponding with Fig. 6, but showing the parts in a different position; Fig. 8 is a similar view taken upon a plane indicated by the tine 8--8 Fig. 6; Fig. 9 is a `similar View of. the mechanism shown in Figs. right of such figures, certain of the parts.

v however, being omitted to better show the explain the mechanism shown in Fi chain 3 a clutch et beine' 7 7 (3 and 'C as scenfrom a position to the'v gages. The upper end of the rod 17 larview serving to further illustrate and gs. (S, 't and Q; Fig. 11 is a view illustrating certain vmechanism for use when the method of storageof the sheets preparatory to feeding them to the printing mechanism is to bechanged; and Figfl'i? is a view illustrating the elements shown in Fig. .l1 in a dill'erent position. y

In the drawings, lis thefraineof the ina'-l chine and 2 is. the niain driving shaft through which motion is transmitted to the various elements ofiny improved feeding mechanism, said shaft u suitable means es by means of the sprocket interposed between the driving means and the shaft 2 so that motion of the entire'feeding mechanism may be arrested as will hereinafter appear.

5 is a supplemental frame secured tothe frame 1 by means -of bolts G, and which frame, upon the removal of the bolts (l may be moved to the left and away from the `other portions of thc machine. The supplemental frame 5 has two shafts and S, extending transverse thereto, the forward shaft 8 having as shown a single roll or drum 9 while the rear shaft 7 has a plurality of pulleys 10 corresponding in the einbodi ment of'iny invention shown, in diameter with the drum 9, `which .shaft and pulleys are preferably adjustable longitudinally of the frame-5 as shown. A plurality of feeding belts extend about theA drum 9 and pulleys 10, and 12 are a plurality of idle rolls supported by shafts the ends of which have bearings in the side members of the supplemental frame 5, and the purpose of which is to support the pile of paper resting upon the belts 11. Thebelts 11 are driven-from the shaft 8 and drinn 9 in a series of intermittent movements by mechanism as follows: 1 l

13 is a gear upon the shaftl 2, and lsl is a shaft driven by the gear i3 through ay gear l5, which shaft has a cam 16 at its free end by means of which cam reciproratonv niotion is transmitted to a connecting rofl 17, the lower ond o f which rod is bifurcated and continues as branchesupon either sido of the shaft i-t whereby the lower end of the rod is guided. said rod having a rolter 18 at its lower end with which the eau. 1G enconelements to be explained; Fig. 10 is a simibeii'ig driven by aiiv ',nected at 26 with. and operates an oscillating member 18carried by and capableof rocking upon .the outer end of a short shaft 19 having a bearing in the frame '1. ,5 20 is a ratchet wheel secured to and adapted to drive the shaft 19 and 22 is a pawl' secured at 23 to the oscillating member 18, and having an extended tripping arm 24:,

which pawl rides over 'the teeth of the.y

16 ratchet wheel 120 when the oscillating mem ber 18 is moved in a clockwise direction referring to Figs.' 6 and7, 'and engages the teeth and thus rotates the shaft 19 when the oscillating member is moved in a `reverse di 15 rectien. The shaft'19 has agear21 at its 'inner end which engages with a gear Y 25,

lupon the'shaftS whereby ,as reciprocating motion is imparted-to the connecting rod 17 the oscillating member .18 is operated Iand ,720 intermittent movement imparted to the shaft that. the -sheets may not be' advanced too,4 rapidly in which 'case two or morev sheets. might'be fed .together to the printing mechanism, means are provided for disengaging the pawl 22 from the ratchet wheel 20 to' thereby stop the shaft 19, although the oscil I latingl member 18'is continuously operated lwhereby the step-by-step movement of the lbelts 11 is arrested, as follows: 27 `is a trip member loose upon thefend of 40. the shaft 19 and normally partaking ofthe e oscillating movements of the oscillating member 18, said trip member having a pin 28 which projects through' a slot- 29 in the .oscillating memberand lies within a. notch or recess at 30 formed in the. tripping' armv 24 of the pawl 22. Normally, when the sheets are being advanced atv a'pro'per rate,

the pin 28 remains within-the recess 30` and i the trip member 27 and oscillating member e A.50A 18., move together, which condition is illustratedin Figf. If, however, the motion. of

the trip'member vis v'arrested theoscillating' i member 18 'andpawl 22 will be carried for- `ward and, as the depression or recess 30 is.

V moved away from the pin 28, the trip arm -24`will 'be moved beneath the pin and the pawl 22 thereby disengaged from the ratchet 20, which action 'will obviously arrest the motion of the shaft 19. This condition is. rillustrated in Fig. 7 of. the drawing. V

'.The' means whereby motion of tlre trip member 27 is arrested is shown .as com- Vprising a shoulder 31'upon the trip member 27; anda dog 32 adapted-to engage said 65 'shoulder as shown 'in Fig. 7 or to miss the same as in Fig. 6. This'dog is carried by a rocking member 33 supported from the frame of .themachine by a support 31h 35 is an oscillating shaft and 36 is an arm oper` 'ati-vely connected with the rocking member 3 3 by a .slidingvv connection at 37. 38 is a roller supported from an arm 39 upon the shaft 35,V which roller comes into contact with the sheets of paper; as they pass to the printing mechanism'- to control the rate'at .which the sheets are advanced.` i.

v Referring now to Fig. `6, if there be but a Y single sheet, or a'number not greater than "is desirable, in position to'be engaged by the roller38 asfit descends due to the oscillatory motion of the shaft 35, the rocking member ,33. is .moved vsuiiicient. tocarry the dog 32 into such a position that it may not engagey the shoulder 31', the trip member 27'remains inoperative and the forward movement of the bands 11 continues. lIf, however, there be an-excessive number .-of sheets beneath the roller38 as-it descends, as shown in Fig. 7, the rocking member 33 is moved farther' and-the dog 32 is brought into a position such thatit engages the shoulder 31 disen# gages the pawl 22 from 'the ratchet 20., ,and arrests the forward movements of the bands 1/1 as above explai Avfed'. Thisl positionofwthe Y' parts is'slhown'in Fig. 7. y

The" roller 38 partakes of a rising and- `falling movement as above explained, it-being essential that the rollerbe out of contact'A. with the paper at such. times' as the upper sheet Ais being ladvanced to `thek printing mechanism, to which end motion iscom- .'municatedto'the oscillating shaft 35' above referred. to from the shaft 14,40 being a cam upon said shaft and'441` a connecting rod bifurcated. at its lower lend vand vextending upon either'side of the shaft 14 and having a roller 42'witl1 which the cam 40 engages. The upper-1 end of the rod41 is pivotally connected. with'an'a'rm 43 upon the shaft 35. .From the above it-will be seen that the' roller. 110 .38..is lifted at each rotation ofthe shaft 14, and the mechanism for yfeeding thesheets to the .printing mechanism,' the same vbeing shown at the right hand end of Figs-1 land 4,is .so timed. that the sheets are fed to the printing mechanism while the roller 38 is beinglheldup and out of contact with the Papel* Y In order that anew 'supply'of paper may' v be supplied to the bands o r belts 11 when the.` 120 pile of sheets upon them isnearly used up, Ii provide mechanism for lifting'the rearkpor-j tion of sheets remaining upon the bands and supporting the same so that a new supply of paper may be placed directly upon the 125 bands beneath such sheets as have not been fed to the printing mechanism, so that by the time the old sheets have been fed to .the4 press the sheets of the new supply will have been kadvanced into position to be grasped. 130

and fed to the printing mechanism, whereby a continuity of operationA is maintained.

The preferred form of such mechanism is as follows: The reference numerals44 refer to a plurality' of slats arranged between and parallel with the belts 11 andthe forward ends of whichare connected witha ,trans-` verse rod 45 the `ends-of which have bearings-in the side members of the frame 5.

.'sliaft, 49 are cams The rear ends of the slats are free, and 46 are arms upon the under sides of the slats through which armsa rod 47 passes, so that the entire `series of slats -may swing about the rod as a center thereby lifting thel rear portion of such sheets as may be unused free from the bands 11. 48 is a transverse at e'ther end thereof, and 50 are connecting'rojd ends of which are connected withthe ends of the rod 47 and the lower ends of which are bifurca-ted. so as to be guided by the shaft 48'. y 51- are rollers at the lower ends of the connecting rods 50. 52 is a crank whereby the shaft 48 may-be operated and the rear ends of the slats 44 lifted through the VKmechanism above described.

.by the frame 1 and operated by a connecting link or rod 57 the lower endof which is connected with the end of a lever 58 pivoted at 59 to thel frame 5. The lever 58 is operated from the shaft 48 through a link G0 the upper end of which is connected with said lever and the lower end of which is bifurcated and prcvidedwith a roller G1 which rides upon a cam 62 upon the shaft 48. It will be observed that the cam (l2 is greater in extent,'circumfcrentiaily, than the cam 49. v

From the premises it will he vobvious that as the handle 52 is turned in a cou'utcr-clockwise directionthe cam 4S) will tilt the slats 44 and raise the rear ends of thc sheets rcmaining upon the bands 11, and at the same time the cam G2 will swing the supporting arms 53 downward and'beneath the pile of papera vThe cam 49 being'shorter than the cam`6'2 the slats 44 as the handle 5:2 is further operated are presently released and return to their position between and parallel with the belts 11, leaving the rear end ofthe pile of paper supported bythe hook-shaped tsupporting membersl 53. A new supply of paper may now be placed upon the belts 11 beneath the paper supported by the hooks s or links the upperl whereupon and by a continued move- I ment of the handle 52 the supports 53 are permitted to return to their initial position and the sheets of paper supported by them to descend and rest upon the new supply,

after which and as the bands 11 are operated as aforesaid the new supply of paper will be advanced beneath the sheets formerly upon the bandsand reach a position such that they may be fed to the press by the time the old supply of sheets has been used up. v

63 `is a table upon which the forward ends of the sheets rest and across which they are fed to the printing mechanism of the press.

When it is desired to feed from a single` pileof sheets of considerable height the frame 5 and table are removed and the pile of sheets placed upon a vertically movable table 64, the same being adjust-able by means of the screws 65 so as to bring the upper end of the pile to about the level of the mechanism for grasping thesheets and advancing them to the printing mechanism. The screws (55 are driven by means of the transverse shaft pandbevel gears 67, G8 to raise the pile as s heets are fed from the top thereof, which shaft C6 is driven by 'means of a sprocket chain 69 'extending about a sprocket wheel on the shaft G6 and another 71 upon the shaft 19. n

From the above it will be seen that the oscillating memberv 18 drives the screws G5 .when paper is to be fedfrom a pile.l in a.

way similar to the way it drives the bands 11 when a continuous `feed is used, and it is obvious that 4the upper end of the pile of sheets upon coming in contact with the roller 38 will arrest the movement of the sprocket wheel 71 and stop upward movement of the table G3 in the same way as above disclosed when describing the operation of the bands 11.

Figs. 1G and 17 show means for counecting the sprocket wheel 70 with the shaft 5G when sheets are to be fed from a pile, or for disconnecting the wheel and the shaft when a continuous feed is to be used. The end of the shaft G6 is made square at 72 and a disk 7B havinga square hole is placed thereupon said disk having projections 74 adapti ed to fit into recesses formedin the hub of the sprocket whcelTO as best shown in Fig. 16. which shows the parts in position 'such that the shaft is driven from the sprocket, wheel through the disk 73. lf, however, the disk be removed" and reversed in posi tion so that the projections 74 may not be in the recesses aforesaid, the shaft 66 will not be driven although the sprocket wheel will continue to move. 75 is a sleeve having a squared portion 76 to receive an operating handle carried by the squared cud of the shaft 66 andwhich sleeve has recesses 7T to receive the projections 74 when the disk isreversed in position the purpose of thel Isleeve being to hold the disk in position upon the lend of the shaft 66.' 78 is a screw for holding they sleeve in place and for permit-- vting its removal and the reversal of-tlie disk as'abovc explained.

The reference character '79 designates a shaft the saine being driven frointhe main shaft ,2 through gears 13, 102, 103, 104, which shaft is shown having a series of rolls 80, although the shaft and rolls may obviously be replaced by a single continuous roll, and 81 are supports carried' by a transverse shaft S2. The supports have each a rotary disk 831Which coperates with the rolls 80 to forward separate' sheets of paper4 toward the press; and cooperates-'also with certain mechanism for arresting the entire vfeedii'ig mechanism in case two -or more sheets startfor the press atthe saine time,

- vwhich stopping mechanism, however, forms cillated to raise the disks 83 at such times as mechanism, whichA sheet feeding mechanism,

a sheet is to be advanced into position to be grasped between the rolls 80 and disks 83 by means of an arm 106 upon the end ofthe .shaft 82 to which the upper. end of a connecting rod 107 is` connected,-the lower end of said rod being guided by the shaft 2 and having a roller 1.08 with which a camv 109 upon the main shaft 2 engages.

K When my improved feeding device is in use, a pile'of sheetsof paper will rest on the belts' 11 with'their forward ends lying upon the table 63, and the sheets will he separated' from the pile by any suitable combing mechanism, and moved from the top of the pile into position to be grasped by the rolls 80 Vand disks S3 and advanced to the mechanism Awhich conveys them to the press, this being accomplished by'v any `suitable sheet feeding however, is not shown as it forms no part ofshe invention to which this-application reates. f

Having thus described and explained the operation thereof, I claim and desire to secure by' Letters Patent:

1. In sheet feeding mechanism for printing presses, a support adapted to receive a pile of sheets of paper; means for lifting the rear portion of said pile 4of sheets from said support; and means for supporting the rearportion of. `Said pilenof sheets in an elevated position'to thereby-permita new supply of sheets to be placed upon said support andl beneath said first mentioned sheets. e 2. In a sheet feeding mechanism for printing presses, a support adapted to receive a 'I ile of'sheets of paper; a series of slats connected with said support adjacent the `forv ward endthereof; means for elevating the rear ends of said slats to thereby lift the rear portion of the -pile of sheets from said I support; and means for supporting the rear portion of said pile of sheets in an elevated position to thereby permit al new supply of y sheets to be placed upon said support and beneath said first mentioned sheets.

3. In. a sheet feeding mechanism for printing presses, a support. adapted t-o re eive a pile of sheets of paper; a series of slL s connected withsaid support .adjacent the forward end thereof; means forV elevating the rear ends of said slats to thereby lift the rear portion of the pile of sheetsv from saidsupport; means normally inactive adapted.v

to support the rear portion v"said pile (of 'sheets in an elevated position, and means fer operating said elevating means and said supporting means to thereby raise therear portion of the pile of sheets and ybring said supporting means in positonto support said sheets.

. 4. In a sheetfeeding mechanism for printing presses, a support `adapt-ed to receivea pile of sheets of paper; a series of slats connected with, said support adj acenf the forward end thereof and the rear ends of which may be elevated to thereby lift. the rear portion of t-he sheets from said support;\means normally inactive adapted to support the rear portion of said pileof Y sheets in an elevated posit-ion; a .slia'ft; a handle for operating said shaft; a cam upon said shaft; a connecting rodfoperated by said cam and `oprat-ively connected with said slats; a second cam upon'said s'haft; and a connecting rod operated by said sec-I; 11o

ond cam and operatively connected with said` supporting means. V v, 5. In a sheet feeding mechanism for print- 4ing presses, a support adapted to receFG a pile of sheetsof paper a series `ofslats connected with said supportI adjacent the for- Ward end theTeO; arms upon the under sided.

a of said slats and by means of which the'rear ends and of the pile of 4"sheets may be lifted from said support; meansnormal'ly inactive adapted to support the rear portion of said pile of sheets in an'elevated position; shaft; a handle for operating said shaft; a

cam upon said shaft; a connect-ing rod operated bysaid cam and operatively connected f with said arms; a second cam upon said shaft; and a connecting rod operated by said' cam and operatively connected with said supporting means.

6. In a sheet feeding 4mechanism for printing presses, a series of belts adapted to re- B5 y move the pile toward the press; a series f ceive and support a pile of sheets of paper; means for driving said belts to thereby move the pile toward the press; means for lifting the reary portion of said pile of sheets from said support; and means for supporting the rear portion of said pile in an elevated posi- .tion to thereby permitI a new supply of sheets to be placed upon said belts and beneath said rst mentioned sheets.

7. In a sheetl feeding mechanism for printing presses, a series of belts adapted to receive a pile of sheets of paper; means for driving said belts to' thereby move the pile toward the press; a series of slats arranged in alternation with said belts; a support for the-forward ends of said slats; means for elevating the rear endsof said slats to thereby lift the rear portion of sheets from said belts; and means `for supporting the rear portion of said pile of sheets in an elevated position yto thereby permit anew supply of sheets to be placed upon said belts and beneath said first mentioned sheets. Y

8. In a sheet feeding mechanism for printing presses, a series of belts adapted to receive and support a pile of sheets of paper; means for driving said belts to thereby move the pile toward the press; a series of slats arranged in alternation with said belts; a support for the forward ends of said slats;` means for elevating the rear ends of said slats to thereby lift the rear portion of the pile of sheets from said belts; means normally inactive adapted to support the rear portion of said pile of sheets in an elevated position; and means for operating said elevating means and said supporting' 'means to thereby raise the rear portion of the pile of sheets and bring said supporting means in-position to support said sheets.

9. In a sheet feeding mechanism for printing presses, a series of belts adapted to receive and support a pile of ysheets of paper; means for driving said belts to thereby move the pile toward the press; a series of slats arranged in alternation with said belts; a support for the forward ends of said slats and the rearends of which may be elevated to thereby lift the rear portion of the sheet froin-said belts; means normally inactive adapted tosupport the rear portion of said pile 0f sheets in an elevated position; a shaft; a handle for operating said shaft; a cam upon said shaft; a connecting rod operated by said cam and oper-,A atively connected with said slats; a second cam upon said shaft; and a Vconnecting rod operated by said second cam and operatively connected with said supporting means.

l0. In a sheet feeding mechanism for printing presses, a series of'belts adapted to -receive and support a pile of sheets of aper; means for driving said belts to theresaid slats; arms upon the un'der side of said' slats and by means of which the rear ends thereof and of the pile of sheets may be lifted from said belts; means normally in,

active adapted to support the rear portion of said pile of she ts in an elevated position; a shaft; a'handle for operating said shaft; a cam upon ,said shaft; a' connecting rod operated by said Cain and operatively connected with saidV arms; a second camupoii said shaft; and a connecting rod operated by said second cam and operatively connected with said supporting means.

11. In a sheet feeding mechanism for printing presses, a series of belts to receive and supporta pile of sheets of paper; means for driving y'said belts te thereby move the pile toward the press; means for lifting the rear portion of said pile olf sheets fromsaid belts; means for supporting the-rear portion of said pile of sheets in an elevated position to thereby permit a new supply of sheets to be placed upon said belts and beneath said lirst. mentioned sheets; and means controlled by the sheets as they pass to the press for interrupting the operation of said belt driving mechanism.

l2. In a sheet feeding mechanism for -printing presses, a series of belts adapted to receiveand support a pile of sheets of paper; driving means for said belts comprising an oscillating member, a pawl carried by said member, la ratchet driven by said pawl, a shaft driven by said ratchet,

vand gearing whereby said belts are driven fromk said shaft; Ya trip lmember movable Vnormally in unison with said oscillating member and having means for engaging said pawl to thereby prevent said pawl from engaging said ratchet and thus interrupt the motion of said belts; and means controlled by the sheets as they pass to the press for holding said trip member stationary with reference to said oscillating member.

'13. In sheet feeding mechanism for print ingpresses, a movable support adapted to receive a pile of sheets of paper; means for operating said movable support; said means comprising an oscillating member, a pawl carried by said member, a ratchet driven by said pawl, a shaft driven by said ratchet, and gearingvwhereby said movable support is drivenfrom saidshaft; a trip member movable normally in `unison with said oscillating member and having meansfor engaging said pawl to thereby prevent it from engaging said ratchet; and means adapted to engage the upper sheet of said pile `of sheets vfor holding said trip member stationary with reference to said oscillating member.

14. in a sheet feeding mechanism for printing presses, a series of belts adapted to receive and supporta pile of sheets of parocating member for holding said pawl out, v

per; means for drivingsaid belts'to thereby move the pile toward'the press, the same 'com rising an oscillatin member a' awl carried thereby, a ratchetengaged by said pawl, a shaft drivenby said ratchet, and gearing whereby.. said belts are driven by said shaft; a reciprocating member adapted to contact with the sheets upon each of its successive downward movements, and to be lifted from lthe sheets, as they pass to the press; means for operating said reciprocating member; and means dependent upon 'the extent of downward movement of said recipof engagement with said ratchet to thereby interrupt the operation of said belt driving means. Y

l5. In sheet feeding mechanism for print-V ing presses, a series of belts adapted to receive and support a pile of sheets of paper;

. means for driving said belts to thereby move the pile toward the press, the same comprising an oscillating member a pawl carrier thereby, a" ratchet engaged by said pawl, a shaft driven by said ratchet, and'gearing whereby said belts are driven by said shaft; a trip member partaking of the movement of said oscillating member and having means for engaging said pawl to thereby prevent it from engaging said ratchet; a reciprocating member adapted to contact with and to be lifted from the'sheets as they pass to the press; means `for operating-said reciprocating member; and means dependent upon the exte'nt of downward movement'of said reciprocating member for holding said trip member stationary, relative to said oscillat- Copies of this patent :hay be obtaineipfor ing memberxwhereby the operation of said belt driving means is arrested.

16. In a sheet feedingmeehanism 40 printing presses, a series of belts Iadapted to 4receive and supporta pile of sheets of paper; meansor driving said'belts to thereby move the pile toward :the press 'the same com risinff'an oscillatin member a aWl carried thereby, a ratchet engaged bysaid pawl, a shaft driven by said ratchet, and

gearing whereby said belts are driven by said shaft; a tripmember partaking of the movement of said oscillating member' and' movement of said reciprocating member,

whereby when saiddog is in position to engage the shoulder of saidvtrip 4member the same is -held stationary with reference lto said oscillating member andtheoperation of said belt driving means arrested. Signed at New York, boroughof Man'-V hattan, in the county ofNew York and State of New York, this 8th day of October, A, D.

CHARLES M. KNEPPLER. Witnesses:

. R. N. FLINT, y

A. V. WALSH.

nve. cents each, by addressing. .the Commissioner ef Patents, Washington, D. C. i

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