US850821A

US850821A - Paper-feeding machine.

Info

Publication number: US850821A
Application number: US32989806A
Authority: US
Inventors: Talbot C Dexter
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-08-09
Filing date: 1906-08-09
Publication date: 1907-04-16
Anticipated expiration: 1924-04-16

Description

PATEN'iED APR. 16, 1907.

c. DEXTER; PAPER FEEDING MACHINE; nrnionxon rnm n AUG. 9, 1906.

7 SHEETS-SHBET 1.

No. 850,821. PATENTED APR. 16, 1907.

T. 0. DEXTER.

PAPER FEEDING MACHINE.

APPLICATION FILED 4116. 9. 1996.

No.850',821 PATBNTED APR. 16,1907.

T. 0. DEXTER.

PAPER FEEDING MAGHINE.

' APPLICATION IILED AUG. a, 1906 7 sums-sum s.

PATENTED APR. 16, 1907..

T G. DEXTER. PAPER FEEDING MACHINE.

APPLIOATION FILED AUG. 9, 1906.

7 BHEETS-SBEBT 4.

95% El im new) Withgzw 53% No. 850,821. PATENTBD APR.16. i907. T. G. DEXTER.

PAPERFEEDING MACHINE. APPLICATION FILED AUG. a, 1906.-

7 SHEETS-SBBET 5.

WITNESSES f/ No 850,821. PATENTED APR. 16, 1907.

. T. 0. DEXTER. PAPEE FEEDING MACHINE.

APPLICATION FILED AUG. 9, 1906.

7 SHEETS-43111131 a.

PATENTED APR. 16} 1907.

T. G. DEXTER. PAPER FEEDING MACHINE.

APPLIUATIOZN FILED AUG. 9, 1906.

' 1 sums-sum 1.

fay/a TALIKYT (J. DEXTER, OF PEARL RIVER, NEW YORK.

PAPER-FEEDiNG MACHINE.

Specification of Letters Patent.

Eatented Aprii 16, 1907.

Application filed August 9, 1906i Serial NO. 329,898.

To all-whom it may concern:

Be it known that I, TALBOT C. DEXTER, a citizen of the United States, and a resident of Pearl River, in the county of Rockland and State of New York, have invented "certain new and useful Improvements in Paper- Feeding Machines, of which the following is a specification.

My present invention relates to improvements in paper-feeding machines of the sheet combing type, in which the pile of sheets is acted upon by combing feeding devices which comb or feather out the top sheets of the pile to gradually separate the successive sheets near the top, so they may be drawn-from the pile periodically and fed to any machine ar ranged to operate upon the individual sheets. A machine of this type is forth in Letters Patent No. 829,854, granted to me August 28, 1906, and my present invention may best be considered in the light of an improvement upon the machine covered by the said patent.

My present invention relates to improved. features of construction particularly with reference to the mechanism for raising and lowering the sheet-combing devices and the sheet-actuated. tri 'iping devices which control the operation of the combing devices:

in order that my invention may be fully understood, 1 will first describe the same with reference to the. accompanying drawings and afterward point out the novelty more particularly in the annexed claims.

Figure 1 is a sectional plan view of a paperfeeding machine embodying my invention, parts being broken away and omitted. Fig. 2 is a vertical longitudinal sectional view of the same, the section being taken on the lines 2 2 of Fig. 1. Fig. 3 is a front elevation of the parts of the macl-iine shown in Figs; 1 and 2. Fig. 4 is a detail vertical longitudinal scctional. elevation showing the arrangement of the combcr eh. ating and lowering mechanism. Fig. 5 is a detail view of the same mechanism looking from the front of the ma chine. Fig. 6 is a detail side elevation of the driving part of the c nnber-controlling mechanism looking from the outside of the machine. V sectional view of the sheet-actuated part of the comber-controlling mechanism. Fig. 8 is a detail elevation of the combined rack and ratchet-bar and its supporting bracket, the positively-driven reciprocating carriage and rack being omitted. Fig. 9 is a detail sectional view illustrating the driving connec- Fig. '7 is a detail vertical longitudinal tion with the reciprocating carriage. Figs. 10, 11., and 12 are enlarged detail views of the sheet-controlled clutch mechanism which throws the combing device out of operation.

Sheet-combing feeding-machines of the type to which my present invention relates are provided with two sets of sheet-combing devices arranged to operate at opposite sides of the machine. In the accompanying drawings I have shown only one-half of the machine, including only one. of these sheetcombing. devices; but it will be understood that two combing devices of the same construction are employed, each being independently controlled by a sheet-actuated tripping mechanism in the manner well understood in this type of machine. The framework of maybe of any suitable construction to properly support the working parts hereinafter referred to.

In the drawings, 1 1 represent the vertical side frames. These side frames are suitably braced to make them rigid by means of stayrods 2'3 and other frame parts, (not shown,) and within the frame is provided a suitable table or support for carrying a pile of sheets, (indicated by the reterencedetter P.) At the front of the pile of sheets I provide a series of vertical guide rods orstrips (not shown) for confining the pile.

5 is a constantly driven shaft bearing the lower feed-rollers 6, said shaft 5 being braced,

at intervals by suitable bearing-brackets. (Not shown.)-

my improved machine 8 are drop-rollers journaled in the bifurcatcd rock-arms 9, mounted upon the transverse roclcshaft '10. The rock-arms 9 are preferably shaped to form sheet confining or guiding lingers, as shown. 'lhrrock-shaft extends transversely of the machine, above.

the constantly-running lower shaft 5, and is suitably braced between its ends by two or more bracket-arms 11, rigidly, secured to the auxiliary longitudinal franiapleces 12. The rock-shaft 10 is operated by the usual mechanism, whereby the series of drop-rollers 8 are periodically raised and lowered for perform ing their function.

21 and 22 are respectively the under feedroller and drop-roller of a foldinganachine to which the feeder is to pass the sheets.

The main cam-shaft extends transversely oftthe machine and is suit-ably journaled in the main side frames 1 and the auxiliary longitudinal frame -pieces 12. This shaft'20 is provided with a driving pulley 25,

as shown, or it may be driven in any other suitable manner, said shaft being the shaft from which all other parts of the machine are driven. The cam-shaft 20 carries a large gear 26, which meshes with a smaller gear 27, secured to a larger ,gear 28, journaled upon a stud 29, projecting from the side frame of the machine. The gear 28 meshes with and. drives a smaller gear 30, j ournaled upon a stud 31, projecting from the side frame of the machine, and this gear 30 in turn drives'a snialler gear 32, keyed to the projecting end of the comher-driving shaft 35, hereinafter referred to, and a smaller gear 33, keyed to the projecting end of the constantlyrotating feed-shaft 5, above referred to.

. 40 is one of apair of combing-wheels.

,Each-of'these combing-wheels is freely journaled at 41 upon a rock-arm 42, which is freely j ournaled upon a sleeve 50, which is in turn journaled upon the shaft 35. This shaft 35 (driven by gear 32) has keyed to it a gear 45, which meshes with a gear 46, secured to the combingwh'eel 40, by which the combing-wheel is constantly rotated.

Projecting from one face of the combersupporting rock-arm 42 is an integral lug 43,

. in which is mounted an adjustable tappetscrew 44. Secured upon the sleeve to one side of the rock-arm 42 is a rock-arm 51,

which is provided with a finger 52, which projects beneath the tappet-screw 44, just referred to, and by its engagement therewith lifts the combing-wheel away from the pile. By adjusting the screw 44 the limits of rise and fall of the combi1'1gwheel can be fixed.

The rock-arm 51 is moved in one direction for lifting the combing-wheel by a spring mechanism which is released by the sheetactuated tripping device hereinafter explained. The rook-arm 51 is moved in the opposite direction to allow the combing-wheel to move by gravity into engagement with the pile of sheets by the action of a cam, as will now be explained.

Sleeve 50 has at its end adjacent to the rock-arm 51 another rock-arm 55, to which is pivotally connected a pitman 56, formed with a yoke-sh aped upper end, which straddies the shaft 20. The shaft 20 carries a peripheral cam 58, which engages the antifriction-roller 57, journaled upon the pitman 56, whereby the rock-arm 55, sleeve 50, and finger 52 are moved once in each revolution of the shaft 20 to reset the tripping mechanism hereinafter described and allow the combing-wheel to rest upon the pile. The rockarm 51 projects forwardly from the sleeve 50 and has pivotally connected to its forward end a yoke-shaped latching-bar 60, extending vertically and formed at its upper end with a contracted guide-bar ortion which rides in a socket 61, ormed in a bracket 62, extending laterallyfrom one of with bar 60.

the central auxiliary frames 12. 63" in the upper end of the loop of the yokeshaped latching-bar 60 is a toggle-link 63, which is pivotally'connected at its lower bifurcated end by pivot-pin 64" with the upper bifurcated end of the lower toggle-link 64.

The toggle-link 64 is pivotally-mounted at its lower,end upon a pivot-pin 64 between ears 65, extending from an angultrr'bracketarm 65, which is secured to one of the framepieces 12. The cars 65 project within the loop of latching-bar 60, so as to support the lower end of the lower toggle-link therein and maintain the thrust of the toggle in line The purpose of the latchingbar 60 and toggle-links 63 64 is to retain the rock-arm 51 and the spring device connected thereto (presently to be referred to) in position to allow the operation of the combing wheel. 66 is an antifriction-roller journaled upon pin 64.

I will now proceed to describe the spring device and will afterward explain the mech: anism for releasing the latching mechanism under the control of the sheets fed from the pile. A rod 70 is pivoted at 71 to the rockarm 51 and projects therefrom vertically through a guide-pin 72, projecting from the bracket 62. Surrounding the rod 70 and confined between the rock-arm 51 and guidepin 72 is an expansion-spring 75, which tends to throw down the arm 51 and move up the finger 52 for raising the comber away from the pile of sheets. This spring tendency is normally restrained bythe toggle-links 63 64 and the latching-bar 60.

' Turning now to the sheet-actuated tripping mechanism for controlling the operation of the combing devices, Iwill first refer to the clutch mechanism which trips the springcontrolled latching mechanism under the action of the sheet-actuated tr'ipper, then the means for operating the mechanism, and finally the structure and operation of the tripping device. Each of the auxiliary frame-pieces 12 is formed with a vertical dovetail uideway 80, in which is mounted a vertic.Tly-reciprocating bracket-plate 81, upon which are mounted the sectionalclutchshaft, the operating-rack, and the trippingrack hereinafter referred to. This bracketplate 81 is formed with a vertical guide-slot 82, fitting over the cam-shaft 20 and allowing the vertical movements of the bracket-plate 81. An antifriction-roller is j ournaled'upon a stud 84, projectingfrom one face of the plate 81, and cam 85 is keyed to the shaft 20 in position to engage the antifriction-roller 83 and support the plate 81 and intermittently raise and lower it.

Bracket-arms are secured to and project rearwardly from the plate 81 in position to support the sectional clutch-shaft consisting of

members

91 and 92. (Illustrated in detail in Figs. 10 and 11 of the drawings.) The Pivoted at foo clutch-shaft members 91 and 92- are of hollowor tubular form, each one being suitably journaled in one of the arms of the lzrackct 90. T he shaft member 91 in additionto heing Lovable about its axis is capable of moving longitudinally in its hearing 90. This member 91 hasmounted upon it or form d integral with it a gear-wheel 93 (driven by rack hereinafter referred to) and one member 04 of a cam-faced slip-clutch formed in its working face with a plurality of radial cam-laced recesses 0 1 The other tuhular shaft meniher 92 has mounted upon one end or formed integral therewith a gear-wheel 95 (driving a movahly-mounted con ihined rack and ratchet bar hereinafter referred to) and upon'its opposite or inner end the other member 98 oi the slip-clutch, formed upon its working face with a plurality of radial camfaced ribs or lugs 06 Secured within the hollow shaft member 01 a tulre 100, which projects from the hollow shaft member 01 into the hollow sha'l t morn'l:er 02. This tulze 100 is brazed; or otherwise rigidly secured in the threaded nut or thimble 101, which screwed into a threaded counterlrore or recess formed in the inner end of the hollow shaft member 01 The end ot the tul;e 100 which projects into the hollow shalt memicr 92 is partly closed by a ring or washer 102, secured in the end of the tube and having a central. opening through it. A bolt 103, haw ing a'cylindrical head 104, is passed through the central opening of the ring or washer 102 and through an opening 99 in the gear-wh eel 95 and supports an expansion-spring 105, which is confined lu-etween the washer 102 and the cylindrical head 104, the outer tl'ireaded end 01 the bolt being engaged by the nuts 1015 and 107 The tension of the spring can be regulated by adjusting the nuts upon the holt. It will be observed from this construction that the spring 105 tends to hold the two parts of the clutch 04 00 in engaged position, so that the gearwheel 95 will l.-c rotated from the gear 03 through the hollow shaft-sections 91 92. The l,=racket-lrearing00 supports the sectional clutch-shalt 01 02 transversely ol the ma- I'lllllP and approximately in line with the lmuckle-joint connecting the togglelinks 63 0-1, the togglc l inks extending across the line ol the hollow sectional shalt, so that any longitudinal movement of the shaft-section 91 toward the toggle-levers will engage roller 66 and force the 'kn'uck'leof the toggle-levers outwardly, tl'iereby breaking the togglelatch and allowing the spring-actuated rod 70 to raise the comhing-wheel from the pile of sheets. This movement of the shaft-section 01 is cll'ccted by arresting the rotation of the shaft-section 02, which is accomplished through the medium of the sheet-actuated tripping devices hereinafter referred to. l

The vertically-reciprocating hraoketeplate pivot-pin 118, which is journaled in the forward end of link 117 and has pivotal connection, as shown at 11.9 in F 9, with a lug upon the carriage 1.11. A nut 120 con'lines the pin upon the carriage 11.]. v

The r'oclcslraft 1 16 is suitably ournaled in the machineirame and extends from side to side of the machine. This rock-shaft carries at its outer end. a depending rockarm 121, pivoted at its lower end 122 to a link 123, which is in turn pivoted at 124 to a slotted rock arm or lever 125. 1 This rockerarm 125 is journaled at to bracket 127, secured to the machine-frame, andis formed with a longitudinal slot in which operates an an tifriction-roller 1'38, journaled upon a crank pin or stud 120, projecting from the face of the crank-disk 130, which is keyed to one end of the cam-shalt 20 The track-bar 110 is provided upon its outer 'l ace that is, upon the lace opposite to the carriage 111 with angular brackets 1235, upon which are.

supported a combined. rack and. ratchet bar 130. The forward half of this bar 136 is formed at its upper edge with rack-teeth (see Fig. 8,) which are in constant mesh with the gear-wheel 05 on sectional shalt member 02, the shaft member 02 about its axis will be transmitted to the bar 136 and cause said bar to reciprocate upon its supports. The rear half of the bar 136 is tori'ncd upon its upper ed e With ratchet-teeth 136 for the uroose presently to be explained. The combined rack and ratchet bar is also formed with a longitudinal slot 136", into which projects a portion 1 18 of the pin. 118 for the purpose hereinafter explained. The traclcbar 110 is also formed with an upwardly-projecting longitudinal flange 110, having a slot 110", corresponding in position with the slot in the combined rack and ratchet bar when the latter is in its initial position for starting, pin 118 projecting through the slot 110" into the slot of the combined rack and ratchet bar. This slotted flange 110 serves as a guide for the combined rack and *atchet bar and for the pin 118 in their reciprocating movement. 136 is a stop-pin on bar 136.

140 is a downwardly-projecting bracket arm, to the lower end of which is journaled a sheet-actuated tripping-finger 14 which is supported in the path or the shee just above the constantly-rotating underfeed-roller so that the movement o'l."

shaft 5. This tripping-finger-141 is prefer ably of U shape, with its two armsprojecting upon opposite sides of one of the underfeedat each side is a rock-shaft 155, journaled in' bracket-arms 156, extending down from. the auxiliary frame-pieces 12. a At the forward end of each of these rock-shafts is a rock-arm 157, carrying at its' upper end an antifrictionroller 158, which openates in engagement with a face-cam 159, keyed to'the cam-shaft from the pile.

20. Each of the rock-shafts 155 carries a horizontal rock-arm,- which is adjustable lon- 'gitudinally of the machine and carries a weighted tail-"ripper 160 of the same construction as fully set forth inmy abovenamed patent.

The following brief explanation will make clear the operation of my improved machine: It being understood that a machine embodying my improvements is provided with two sets of sheet-eon1bing mechanisms, each independently controlled .by a sheet actuated tripping mechanism as described, the machine is started in operation with the combing-wheels resting upon. the top of the pile of sheets, the combing-wheels being driven through the gears, as above explained, and the trip-lingers 141 resting in the path of the sheets and the pawls 143 being sup ported thereby out of engagement with the ratchet-bars .136, so that the ratchetbars will reciprocate freely through. the medium of clutch mechanism 94 96, driven by the rack-bar 112. In. this normal operative position of the machine the spring-elevating mechanisms for the combers are held out of action by. the toggles 63 64 and latching-bars 60. The combing-wheels will operate until the top sheet is moved forward sufliciently to actuate one of the trip-fingers 141, which action will drop one of the pawls 143 into engagement with a ratchet-bar 136, arresting said ratchetbar, and thereby causing the disengagement of clutch members 94 96 with. the crmsequent longitudinal displacement of shaftsseetion 91. The movement-of shaft-sectii'm 91 breaks toggle 6-3 64 of the latching-bar 60, which allows the spring to act for raising the first combing-wheel This action is immediatel followed by the same operation on the other combing-Wheel as the edge of the sheet in front of such combing-wheel reaches registered position. Immediately following the arrest of the two combing-wheels the cams come into play to raise trip-fingers 141 out of the path of the sheets, (the rack-bars and sectional clutch-shafts being raised also,)

and then the drop-roller mechanism operates sheet has left the pile the earns 85 again lower the frames 81 for returnin the trip-fingers 141 and the rack-bars and sectional clutch-shafts to their lowered position ready for another feeding operation. At about the same time the driving rack-bars 112 and combined rack and ratchet bars 136 arereturned rearwardly of the vmachine.

These rack-bars move rearwardly simulta-- neouslyuntil the pin 136 of the movable rack-bar 136- engages its supporting frame or bracket and arrests its movement, the )111 1153 sliding in the slot 136 until the en of the rearward stroke of the carriage 111 is reached, when the parts will be in readiness for another forward feeding stroke. The

return of the part to this initial position wi-lhgo of course cause the relative shifting of the clutch members 94 96. Immediately following this operation the cams 58 forcibly 'rock the sleeves 50 for allowing the combingwheels to again fall into engagement with the top of the pile of sheets and at the same time to reset the toggle-levers 63 64, moving them into the position shown in Fig. 3. It will be observed that in this reset position the toggle-links are moved inwardly a little out of line, so as to latch them in this position, the antifriction-roller 66 at the knucklejointof the toggles resting in contact with the end of the shaft-section 91..

I would have it understood that the structureof my improved machine as above described is snbject to many of the claims of my above named patent on this same type of machine, the resent application being limited to theditlerences in construction o1 the controlling and tripping mechanisms of the combing devices.

. Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. In a paperfee iing machine, the combi nation of a sheet-moving device, and means for operating the sheet-moving device, of a rockarm adapted to engage and elevate the sheet-moving device, a spring mechanism tending'to move said rock-arm in one direc tion, mechanism adapted to periodically move the rock-arm in the opposite direction, alatching-bar connected with the rock-arm, toggle-levers engaging the latching-bar and retaining the rock-arm in one position with the spring mechanism under tension, and sheet-actuated.means adapted to trip said toggle-levers to allow the spring mechanism to operate.

2. The combination of a support for a pile of sheets, a rotary shalt, a rotary sheet-moving instrument driven from said shaft and adapted to engage the top of the pile of sheets, a rock-arm supporting the rotary sheet-moving instrument, a second rock-arm adapted to raise and lower the sheet-moving instrument, cam mechanism suitably connected with said second rock-arm, a spring device also connected with said second rockarm, a latching-bar connected with said second rock-arm, toggle-leversconnected recontrolled mechanism for effecting the longitudinal movement of the throw-out shaft.

l.- The combination of a sheet-moving in- I strument adapted to be moved into and out of engagement with a sheet, a spring device adapted to elevatethe sheet-moving instrument, a latching-bar for restraining the actlon of the spring device, toggle-levers connecting the latching-bar with a stationary bracket, a longitudinally-movable throw-out shaft adapted to release said restraining means, sheet-c0ntrolled mechanism for effects ing the longitudinal movement of the throwout shaft, and. cam mechanism adapted to reset the restraining means.

5. In a paper-feeding machine, the. combination of a sheet-moving device, and means for operating said device, with arock-arm adapted to elevate the sheet-moving device, a spring mechanism connected with said rock-arm and adapted to move it in one direction, a latching-bar also connected to said rock-arm, a bracketarm, toggle-levers con necting respectively with said latching-bar and said bracket-arm, and sheet-actuated means adapted to trip said toggle-levers.

6. In a paper-feeding machine, the combination of a sheet-moving device,.' and means for operating said device, with a rock-arm adapted to elevate the sheet-moving device, a spring mechanism connected with said rock-arm and adapted 'to move it in one direction, a latching-bar also connected to said rock-arm, said latching-bar being in the form of anelongated yoke or loop, a bracket-arm projecting into the loop of the. latching-bar,

' pivotally-connected toggle-levers pivoted respectively to the latching-bar and bracketarm, and sheet-actuated means adapted to trip said togglelevers. i

7. In a pamr-feeding machine, the combination of a sheet-moving device, and means for operating said device, with a rock-arm adapted to elevate the sheet-moving device, a spring mechanism connected with said rock-arm and adapted to move it in one direction, a latching-bar also connected to said rock-arm, said latching-bar being in the form of an elongated yoke or loop, a bracket-arm projecting into the loop of the latching-bar, pivotally-eonnected toggle-levers pivoted re speetively to the latchingbar and bracketarm, an antifriction-roller journaled upon the knuckle-joint of said toggle-lever, a longitudinally-movable throw-out shai't adapted to engage said antifriction-roller, and. sheetactuated means adapted to cause said shaft to move longitudinally for tripping said togglelevers.

8. In a paper-feeding machine, the combi nation of a sheet-moving device and means for operating said device, with suitable throw-out mechanism comprising a sectional shaft, a slip-clutch connecting said shaft-sections, means for operating said sectional shaft, a gear secured to one of sald shaft-sectrons, a rack-bar meshing with and driven by said. gear, and sheet-actuated means for arresting the movement of said driven rackbar.

9. In a paper-feeding machine, the combination of a sheet-movii1g device and means for operating the-said device, with throw-out mechanism for said sheet-moving device including a sectional shaft, a slip-clutch connecting the sections of said shaft, gearavheels secured to said shaft-sections, a positivelydriven rack-bar meshing with the one of said gears for driving said shaft, a second rackbar meshing with and driven by the other gear-Wheel, and sheet-actuated means adapted to arrest the movement of said driven rack-bar. 1

10. In a paper-feeding machine, the combination of a sheet-moving device and means for operating said device, with means for moving the sheet-moving device out of operation including a longitudinally-movable shaft-section. carrying a gear-wheel, a rackbar meshing With said gear-wheel and driving said shaft-section. means for operating said rack-bar, a second shaft-section carry ing a second gear-wheel, slip-clutch members mounted upon the respective Sllilifh SGClDlOIlS, a combined rack and ratchet bar the rack portion of which meshes with said second gear-wheel, a controlli11gpawl, and a sheetactuated finger suitably connected with said pawl.

11. The combination of a sheet-support, a sheet-moving instrument, means for elevating the sheet-moving instrument, a shaft-section movable longitudinally and about its axis, means actuated by the longitudinal movement of said shaft-section for releasing the elevating means, a second shaft-section movable about its aXis. slip-clutch members secured upon the respective shaft-sections, means acting upon one of said shaft-sections for moving both shaft-sections about their axis, a gear upon the other section, a rackbar meshing with and driven by said gear, and sheet-controlled means acting upon the rack-bar for the purpose set forth. I

12. The combination of a sheet-support, a sheet-moving instrument, means for elevatmg the sheet-moving instrument, a shaft-section movable longitudinally and about its axis, means actuated by the longitudinal movement of said shaft-section for releasing the elevating meansgaisecond shaft-section movable about its axis, slip-clutch members secured upon the respective shaft-sections, a gear, mounted upon one of said shaft-seetions, a positively-drivenreciprocatory rack meshing with said gear for moving both shaft-sections about their axis, a second gear upon the second shaft-section, a rack-bar meshing with and driven by said second gear, and sheet-controlled means acting upon tlre rack-bar to arrest the movement-of one shaft-section about its axis and cause the other shaftsection to move longitudinally.

13. The combination of a sheet-moving instrument, means for elevating the sheet-movmg instrument from a pile, a rotary longitu dmally-movable shaft-section, means actuated by the longitudinal movement of said shaft-section for releasing the elevating means, a second rotary shaft-section, slipclutch members securedupon the respective rotary shaft-sections, means yieldingly connecting the shaft-sections, a gear-wheel upon each of said rotary shaft-sections, a stationary track bar or frame, a reclprocating carriage mounted upon the track-bar, and car- -rying a rack-bar which meshes with one of said gears for driving said sectional shaft, a

I combined rack and ratchet bar also mounted upon said track bar or frame and meshing with the other gear, and a sheet-actuated pawl adapted to engage said ratchet.

- 14. In apaper-feeding machine, the combination of a sheet-moving device and means for operating said device, with means for moving the sheet-moving device out of operation including a longitudinally-movable shaft-section carrying a gear-wheel, a rack.- bar meshing with said gear-wheel and driving said shaft-section, a reciprocating link oper. ating said rack-bar, a second shaft-sectioi1 carrying a second gear-wheel, slip-clutch members mounted upon the respective shaftbar, the rack portion of which meshes with said second gear-wheel, a pin'projectingfiom said link into the slot of said rack and ratchet finger suitably connected with said pawl.

15. In a paper-feeding machine, the combination of a sheet-moving device and means for operatin mechanism orsaid sheet-moving device including a sectional shaft, a slip-clutch connecting the sections of said shaft, gear-wheels secured to said shaft-sections, the track-bar 110, the reciprocating carriage 111 carrying rack 112, the combined rack and ratchet bar 136 formed with slot 136, a stop for limiting themovement of bar 136 in one direction, the link 117, pin 118, connecting the carriage and link and engaging the slot 136 means for impartin movement to link 117, and a sheet-control ed pawl adapted to engage the ratchet.

TALBOT C. DEXTER.

Witnesses:

G. v. P. Ln 'ron, E. B. 0. LINDQUIST.

bar, a controlling-pawl, and a sheet-actuated the said device, with throw-out sections, a slotted combined rack and ratchet