US1225410A

US1225410A - Sheet-feeding mechanism.

Info

Publication number: US1225410A
Application number: US4897715A
Authority: US
Inventors: Robert G Clark
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-09-04
Filing date: 1915-09-04
Publication date: 1917-05-08
Anticipated expiration: 1934-05-08

Description

R. G. CLARK.

SHEETFEEDING mtcmmsm. APPLICATION nuzu SEPT. 4. 1915.

Patented May 8,1917.

2 sums-mu a R. G. CLARK. 'SHEETFEEDING MECHANISM kPPLICATION FILED SEPT. 4. I915.

UNITED STATESQPAYT nonnm e. CLARK, or'nnooxmm, m YORK.

snnnr-rnnnme' uncnmrsm.

Specification 0! Letters 1atent.- Patntd MayB, 1917 Application tiled September 4, 1915. ,BerialNo. 48,977.

To all whom it ma concern:

Be it known t at I, Bonner Ga CLARK, a citizen of the United States, residing in the borough of Brooklyn, in thecount of Kings, city and State of, New York, ave invented. new and useful Improvements in Sheet-Feeding Mechanism,- of which the following is a specification.

This invention relates to mechanism to separate and feedsheets or blanks from a pile to mechanism to operate upon such sheets or blanks, and it is the object of the invention to' provide a mechanism'of this character which is simple and cheap in construction and efficient in operation, and which may be constructed-as an attachment to be applied to machines for operating upon the separated and fed sheets.

-VVhile I have shown in the drawings an embodiment of my invention as adapted to separateandfeed metallic sheets or blanks from a pile to be utilized as the blank feed ing mechanism 'of a can bod forming" or can making machine, it is to understood that it is applicable to other types of apparatus and to' feed other than metallic Sheets orblanks. v. In carrying out the invention I provide a carriage to reciprocate beneath a pile of sheets or blanks, said carnage having means: to engage wlth and -move the lowermost sheet of the pile against an abutment to buckle the sheet, fingers pivoted on and movable with the carriage engaging with the buckled portion of the sheetwhen the carriageis movedin a reverse direction to separate. and feed the sheet from the pile.

In the drawings-accompanying and forming a part of this specification, Figure 1 is a plan view of the rear portion of the framework of acan body forming'machine illustrating an embodiment of my inventiou-applied thereto.

Fig.2 is a sectional side elevation taken substantially on the lines A-A of Fig.v 1.

Fig. is a perspective view. partly broken chmeyan'd.

t0 (3 rHIergcd sectional side away-and looking-at the rear of the maelevations taken s ubstantially on the line B ll of Fig. 1 and showing different posit1ons; of the sheet separating and feeding means.

Similan'characters of reference designate like parts throughout the different views of the drawin s.

' In the rawings I have shown an cmbodiment of my invention in connection with a can body forming machine and as applied to the rear of the framework F thereof. A pile of sheets orblanks s .is supported adjacentits side edgesupon bars7, 7 fixed to the framework and centrally thereof upon a bar 8 fixed to a reciprocablecarriage 9. The shee'ts are confined between veitical side members 'IOQ-an'd at the. front edges by bars 11 carriedIby a crossbar 12 fixed at its ends to brackets 13 mounted-on.

the framework. The, lower ends" of the bars 11 are free and extend to, a point-slightlythe lowermost sheet of the ile. The

below rear edges of the sheet are confine by avertical bar 14 a'djustably carried by ai cross,

bar 15 .by a bolt 16 engaging n an o ening 17 in said bar, the cross-bar being xed at its ends to brackets 18 fixed to the framework, the; side bars 10 also beingfixed to,

thecross bar 15. The lower end of the bar 14 is freeand extends to a point so that it will. be above and clear the lowermost sheet,

of the pile as clearly shown in Fi 2 and 3 for a purpose tobe hereinafterg scribed.

The support 8 iscarried by and reciprocated' with the carriage 9 which is actuated by a crank 19 on a shaft '20 operated from any suitable source, such as the main driving shaft of the machine, (not shown), the carriage being,' connected "to the crank by a rod 21. It will be understood that the reciprocation of the carriage is so timed that it will operate in proper timed sequence with the mechanism which the fed blanks or sheets.

During the latter'operationof the rearward movement of the carriage. and supe port 8 a dog 22, which is in'thenature of a starting dog for the sheets.:uljustably seoperates upon cured by screw23 to the top oftlie support 35 projections until they strike a bevel or cam 8 and havi'n its forward edge'beveled or inclined as it own, engagesgwith the front edge, of the lowermost sheet and forces said sheet rearward for a predetermined dis- 'tanc'e, the rear edge'of the sheet during this movement engaging with a bevel or cam face 24 on the lower end of abutinents 25 in the form of bars carried by the cross bar 15. The abutments extend to a oint below the 11 per surface of the centre sup ort 8 nd t e bevel extendsgdownward an rearward being at a pornt above and clearing tple lowermost sheet of the pile. As the s eet buckle or bent from the front to the rear A edge at opposite sides of the central supin th s position during the initial forward -moveinent of the carriage and until they are engaged and pushed forward by resilient fingers? These fingers are pivotally suppo 6% at 28 u on the bars 26 and the for- Ward "nds are orced upward bysprmgs 29, such ends in the rearward position of the carriage engaging under projections 30 extendingrearwardly from the abutments 25; During the initial forward movement of the carriage theseforward ends ride along'said face 31 on the abutments opposite to the cam faces 24 with the extremities of the fingers above the rear portion of the sheet.

During the further forward movement of the carriage the forward ends of-the fingers will ride-down the cam faces" 31 with the undersurface of an under cutportion of the fingers resting on the top of the sheet,when the fingers will ride under the abutments and along the uppersurface of the sheet,

separat ng sald sheet from the pile (as shown in Fig. 5) and until a shoulder 33 formed by the under cut portions engages with the rear edge of the sheet when the sheet, is moved forward with the fingers, the

. lateral ends being buckled or bent over the central support 8 will readily clear the bot lpasses below the abutments it istom of the bars 11, the fingers 27 being'of such length so that the under faces of the abutments 25 will engage .with the fingers during the movement of the fingers under the stops '11. During ,the' continued forward movement the central portion of the sheet will ride up the inclined rear ends on guides 34 until it rests in its buckled condi-v tion upon a. fiat portion on said uides,-as

shown in Fig. 2, the pressure of 't 1e fingers on said sheet being then released b the springs 29, forcing the fingers upwar into engagement witlrthe extensions 30: of the abutm'ents 25, as shown in Fig. G -w I en the carriage is returned and the nextsheet is engaged by the dog 22 to repeati tlje operation.

The guide 34 is in the form of 'ai pair of plates engaging at opposite sides of the central support 8 with the fiati-pprt-ion extending a distance somewhat above the iiog 22, thereby permitting the returnmovement of said 'dog without interfering vi ith a fed. sheet.v Upon the next forwardmovement of the carriage dogs 35 carried by the bars 26 will engage the sheet on the guide jt moving it down the forward inclined portiti'r'i" of the guides 34 to the position shown; at S in Fig. 2'where it may be taken up by the means to operate upon the sheet."

By the adjustable supporting ,of the bar 14 In a vertical direction the device is,

1. Ina sheet feeder,- the combination of a support for a pile ofsheets; a'reciprocable carriage; means on said carriage-toengage with and move a sheet from the pile when moving in one direction; means to engage with and buckle said sheet during said movement thereof; and means on said to engage with the buckled portion'l'of; the sheet when the carriage is moved in reverse direction to separate and feed the from the .pile.

2. In a sheet feeder, the combin'ation'oi a support for] a pile of sheets; a reciproca l le carriage; means on "said carriage to engage with one edge of a sheet and move it from the pile when moving in one direction; means to enia e with the opposite edge of the sheet an uckle the'same during said movementof the sheet; and meanson said carriage to engage with the buckled portion of the sheet when the carriage is moved in reverse direction to separate and feed the sheet from the pile.

3. In a sheet feeder, the combination of means to support a pile of sheets adjacent the sides; a reciprocable support for the carriage sheet central portion of the sheets; means carried 2 by said support to engage with and move-a sheet from the pile when moved in one di-':

rection; means to bucklesaid sheet durin said movement thereof; and means carrie by said support'to engage with and separate 5" adapted for sheetsof different thickness. It;

V 4. In a sheet feeder, the combination with a support for-a pile of sheets, of a reciprocable carriage; a-dog movablewith the carriage to en age with and move the lowermost sheet rom the pile for a predetermined distance when the carriage is moved in one direction; means torengage with and buckle said sheet during said movement; and fingers movablewith the carriage to'engage over the buckled portion of the sheet when the carriage is moved in a reverse direction to separate and feed the sheet from the pile.

5. In a sheet feeder, the combination with a support for a pile of sheets, of a reciprocable dog to engage with the lowermost sheet of the pile and move it a predetermined distance in one direction; anabutment with which said sheet engages duri said movement to buckle the same; and ngers movable with the dog to engage with the buckled portion of said sheet when the dog is moved in-a reverse direction to separate and feed the sheet from the pile.

6. In a sheet feeder, the combination with a support for a pile of. sheets, of a reciprocable dog 'toengage with one edge of the lowermost sheetof the pile and move it a predetermined distance when moved in one direction; a pair, of abutments to engage witlrthe opposite edge of said sheet as it is moved by the dog to buckle the sheet on opposite sides of the center thereof; and a pair of fingers movable with the dog to engage the buckled portions of the sheet when the dog is moved in a reverse direction to separate and feed the sheet from the pile.

7. In av sheet feeder, the combination with a support for a plle of sheets, of a reciprocable carriage; a dog movable with the carri'ageto engage: one edge of the lowermost sheet of the pile and move said sheet a predetermined distance when the carriage is moved in one direction; a pair of .abnb

ments having on m faceswith which the oppo-- site end of the sheet engages during the said movei ncnt of the sheet to buckle the sheet at opposite sides of the center thereof; and a pair of resilient lingers on the carriage to engage the edge and above the ,buckled portionsmf the sheet when the carriage moves in a reverse direction to separate and feed the sheet from'the )ile.

8. In a sheet to carriage; a dog movablewith the carriage to engage one edge of the lowermost sheet of the pile and move said sheet a predetermined distance when the carriage is moved in one direction; a pair of abutments havzng cam faces with which the opposite edge of the i 'slrcet engages during the saidmovemcntofi the sheet to-bnckle the sheet at oppositisides of the center thererfi; n pailof resilient lingers on the carriage to pngagc the edge and above the buckled portions of the sheet ing and-feeding of a succeeding sheet;

faces to engage with the edge or, the combination with a support for a pile of :-heets, of a reciprocahle when the carriage moves in a reverse direction to separate andfeed the sheet from the pile; and dogs mounted on the carriage to advance the previously fed sheet during the movement of the carriage and the separat- 9. In a sheet feeder; the combination ,of a support to support a pile of sheets adjacent opposite sides; a reclprocable carriage; .a bar fixed to and movable with the carriage to 7 5 support the pile of sheets centrally thereof;

a dog fixed to said bar to engage with one edge of the lowermost sheet of=the pile and move said sheet a predetermined distance when the carriage is moved in one direction; so a pair of abutmentshaving a cam face to engage the edge of the sheet 0 posite to that with which the dog-enga es uring the said 'movement of the sheet to uckle the sheet at opposite sides of the bar; and fingers resiliently mounted on the carriage. to engage.

with the buckledportions of the sheet to sepi arate and feed the sheet from the pile when the carriage is moved in a, reversedirection. 10. In a sheet feeder, the combination of a support to support a pile of sheets adjacent 0 posite sides; a reciprocable carriage; a bar xed to and movable with the carriage to support the ile ofsheets centrally thereof; a dog fixed one edge of the lowermost sheet ofthe ile and move said sheet a predetermined istance when the carria e is moved in one direction; a pair of a utments having cam of the sheet opposite to that with whic the dog engages-during said movementof the'shet to .mckle the sheet at opposite sides of the bar, a l said abutments having rearward projec tions; a pair of fingers pivotally mounted on gaging below the abutment projections; springs, to force said fingers upward; said fingers engaging with the edge and abovh. the buckled portions of the sheet, when thong carriage is moved in a reverse direction to separate-and feed the sheet; and a second cam face on said abutments with which said fingers engage to cause them to clear the next adjacent sheet of the pile.

p 11. In a sheet feeder,-the combination of a support to support a pile of sheets adjacent opposite sides and centrally thereof; means to move the lowermost sheet of the pile a predetermined distance in one direction and no buckle said sheet atopposite sides of the 7 'central support; and fingers to engage with to said bar to engage with 95 1'05 the carriage with the free ends normallyen- Eoints; and means to engage with the g -'uckled' portions of the sheet to move it in i 1 reverse direction to sepurete and feed the sheet from thepile.

I5 13. In in sheet feeder, the combination of a.

support for apile of sheets a reeiprocable dog to engage with and move the lowermost sheet a predetermined distance from the pile; abutments with which said sheet eneges. during said movement to buckle the 10 sheet; res'lientfingers movable with the dog to engage with the buckled-portions of the sheet to moveit in a reverse direction to separate and feed the sheet from the pile; and

a guide over which said sheet is moved to 15 permit the-return of the dog, substantially as and for the pur ose %ecified.

' I OB" RT G. CLARK.