US1011820A - Mechanism for feeding blanks, sheets, and the like. - Google Patents

Description

E. w. LABOMBAR-DE. MECHANISM FOR FEEDING BLANKS, SHEETS,

AND THE LIKE.

APPLIOATION FILED JUNE 21,1907. L1 1,820.

Patented Dec. .12, 1911.

4 SHEETSSHEET 1 E. W. LABOMBARDE.

MEGHANISM FOR FEEDING BLANKS, SHEETS, AND THE LIKE. APP'LIOATION FILED JUNE 21,1907.

1,01 1,820. Patented Dec.12,1911.

4 SHEETSSHEET 2.

E. W. LABOMBARDE. MEGHANISM FOR FEEDING BLANKS, SHEETS, AND THE LIKE.

APPLICATION FILED JUNE 21. 1907.

Patented Dec. 12, 1911.

4 SHEETSSH.EET 3.

Zifiwsses: javamior:

Jam 3? E. W. LABOMBARDE.

MECHANISM FOR FEEDING BLANKS, SHEETS, AND THE LIKE. 1,01 1 820.

Patented Dec. 12, 1911.

APPLLGATION FILED JUNE 21, 1907.

ZZnesaea ELIE W. LABOMBARDE, OF NASHU'A, NEW HAMPSHIRE.

MECHANISM FUR FEEDING BLANKS, SHEETS, AND THE LIKE.

"Specification of Letters Patent.

Patented Dec. 12, 1911.

Applif tion filed June 21, 1907. Serial No. 380,067

To all whom it may concern.

Be it known that I, ELIE WV. LABOMBARDE, of Nashua, in the county of Hillsboro and State of New Hampshire, have invented a new and useful Mechanism for Feeding Blanks, Sheets, and the Like, of which the following is a specification.

'l\ y invention relates to mechanisms for feeding blanks, sheets or the like, such for example as mechanism employed to feed paper box blanks to a box folding machine.

The object of my invention is to provide an improved mechanism of this character.

The main feature of my invention resides in the combination with a traveling conveyer adapted to support a stack of blanks or the like, of a gage adjacent to said conveyer and separated therefrom so as to leave a passageway for a blank between the gage and conveyer and one or more stack-shap ng stops for guiding the blanks under the gage.

In the best form of my invention two stack-shaping stops are employed one at each side of the gage for beveling the front end of the stack. That is, theblanks are de posited upon that portion of the conveyer that is traveling toward the gage and said conveyer acts to carry the blanks toward the gage and thereby forces the front end of the stack against the stack-shaping stops which shape or bevel the stack so that the bottom or first blank is guided under the gage. The bottom blank being therefore unrestrained by the gage is fed forward under the latter by the traveling conveyer. The gage 1s positioned or adjusted with relation to the conveyer so that only one blank can pass thereunder at one time, the other blanks being held back until the first blank has been fed forward whereupon the next bank is fed forward immediately behind the first.

In the accompanying drawings: Figure 1 is a side elevation of a mechanism for feeding blanks or sheets embodying one form of my invention; Fig. 2 is a plan view of the mechanism shown in Fig. 1; Fig. 3 is a section on line 33 of Fig. 1; Fig. 4 is a. section on line 443of Fig. 3; Fig. 5 is a side elevation, on enlarged scale, of the gage;.Figs. 6 and]are,respectively, side and rear elevations of an alternative form of stop.

Having reference to the drawings, the

I conveyer' referred to above, is made up of a plurality of endless belts or supported by adrivingdrum a" and a'roller a journaled loosely at its ends in bearings on the frame end it carries a pinion 6 0* bya screw 0 of the machine. a to which is fixed a pulley a connected by a belt a with a pulley a fast to a driving shaft (4 Through the connections described the shaft a acts to continuously drive the conveyer a in the direction of the arrow in F ig. 4. Between the drum a and roller a is a loose shaft a to which is fixed a plurality of flanged rollers a that serve not only to guide the belts on but also as supports for said belts.

The blanks are placed in a pile or stack A on the conveyer a and said conveyer feeds the blanks forward one at a time and delivers them to a pair of feed rolls Z and b which in turn feed the blanks farther forward and entirely away from the conveyer so that the second blank does not overtake the first blank. The roll 6 is .made at its ends with trunnions each journaled in a. block b sliding freely in a vertical .slot or way 6 provided on the frame of the machine, so that the may be assisted by'sprlng action, serves to hold said roll against roll 6. The roll 6 is j ournaled at its ends in the frame and at one meshing with a pinion b on roll 5 and also with an inter mediate or idle pinion F2 driven by a gear 6 fixed to-shaft M. It will thus be seen that shaft a also serves through the gear and pinion connection just described, to continuously drive the rolls 1) and b in the directions of the arrows, Fig. 4, so that as soon as the front end of a blank is presented to them by the conveyer a they engage said blank and feed it forward away from the conveyer.

The gage above referred to consists of a hard steel blade 0 fastened in a holder 0 by a clamping screw 0 Holder 0 is made with a shank c that is clamped to a bracket extending through a slot 0 in shank 0 J ournaled in the upper end of shank is a screw 0 whose lower threaded end engages a tapped hole 0 in bracket 0*. Between the head of shank c and bracket 0* is a spring 6' inclosing screw 0 operating screw 0 the blade 0 may be ad justed with relation to conveyer a according to the thickness of blankto be handled." The frame ofv the machine includes a bar 65.

above and extending.

4 across the conveyer a and thls bar 1s made with a slot d through.

which extends a'stud 0 threaded at end weight of roll 6 which- It will thus be seen that by loosening screw 0 and The drum n is on a shaft to receive a nut a by means of which bracket 0 is clamped to cross-bar d.

Herein I have shown two stack-shaping stops f one at each side of gage c and each of these'stops is a tongue or strip of spring metal bent near its middle into the shape shown in Fig. 4. The upper end of each stop is clamped to a bracket f by a plate f and screw f Each bracket'f is made with a stud f, Fig. 2, extending through slot d in crossbar d, and carrying a nut f by means of which the bracket is clamped rigidly to said cross-bar. Each bracket f carries a screw f bearing at its lower end against the lower part of its'respective stop 7 so that by adjusting said screw the space between the lower end of the stop and conveyer a may be accurately adjusted the resiliency of-the stop serving to raise said lower end and screw 1 serving to force said end downward. A check-nut f serves to lock screw f in adjusted position and assists also in clamping the stop f to the bracket.

Variations in the shape of the blanks being handled require changes in the relation of the stops f to the gage 0 and as will be obvious the construction described permits of placing the gage and stops in any desired relation by adjustment along slot d. For the same reason it is necessary to adjust the stops 7 toward and from the stack A and therefore each stop is made with slots f through which screws f and f extend so that when said screw f and nut f are loosened said stops may be adjusted in this direction as required by the shape of blank.

Extending through the two stretches of conveyer belts on are two pairs of cross-bars g fastened. at their endsto the frame of the machine and supportedby these cross-bars are two side gages j which position the stack A and guide the blanks as they are fed forward. On each gage j are mounted two bolts j whose'lower ends extend down between bars 9 and are provided below the latter with heads j At theirupper ends the bolts y" are threaded to receive hand nuts 7' by means of which the gages are clamped in position with provision for adj ustment toward and from conveyer a.

To the cross-bars g are fixed two slotted bars k that have clamped to them by means of bolts h, a flame h carrying a loose roller it on which the rear end of the stack is supported at a greater elevation than the front end so that the blanks tend to slide by gravity down against the gage c and stops f by which'they are properly posit'ioned. f course with small blanks the roll h need not be used but it may be adjusted to a considerable extent with relation to the gage a and stops faccording to the size of blank by loosening bolts h and adjusting the latter along bars k. Pins k on frame 77. by engaging bars h prevent frame it swinging on bolts h. The adjacent flanges e of the two middle rolls a" are enlarged to form a wheel which serves as a rigid abutment rotating at the same speed as the belts or and as shown in Fig. 3 this wheel. a projects up through the conveyor and cooperates with gage c in controlling the feed. of the blanks. The lower ends of the stack shapers f are practically in contact with the conveyer belts (z and therefore when a blank is carried forward by the latter it is forced past said shapers f which yield to allow its passage as does also the material of the conveyer a which is made of a yielding material such as rubber composition.

Different styles of paper box blanks vary greatly in outline, some having a straight side which can be placed at the front of the stack so as to require the lower ends of shapers f and gage c to be set in alinement over wheel a and rolls a". On the other hand the edges of the blanks at the front of the stack will sometimes be made up of notches and tongues so that the shapers f will be offset with relation to gage c, that is they will be set to the left or to the right (Fig. at) of the gage. 'ilherefore it will be clear that in order to adapt the machine to handle blanks of different sizes and shapes, 1 have provided a structure that very conveniently provides for universal relative adjustment of the shapers and gage c as well as individual adjustment of said parts for blanks of different thickness. A peculiar feature of the gage c is that its lower blank engaging end is a knife edge extending transversely of the carrier so that the passageway for the blank is concentrated so to speak at the edge of the knife and moreover the friction on the top of the blank is reduced to the minimum.

Located between the gage c and the rolls 7 7) is a loose roller m extending across and resting upon the top stretch of carrier (1 so that the movement of the latter con stantly rotates said roll. This roll m is made at its ends with trunnions turning freely in vertical slots provided in the lower by carrier a it passes under roll m which holds said advance end down onto the carrier and guides it accurately between the two rolls F), b, said roll m yielding upwardly as the blank passes under it. The peculiarity of this roll m is that it is constantly in motion at a surface speed the same as the carrier so that when it engages a blank the latter is not retarded or displaced by contact with a roll normally at rest as heretofore.

Figs. 6 and 7 show another form of stackshaping stop wherein instead of the resiliv by a bolt, 70', to a bar is ent tongue 7'' above described a steel-roll k is provided. This roll 7 is clamped rigidly secured with provision for Vertical adjustment to a bar 70 which in turn is fastened'with provision for horizontal adjustment to a bracket is adapted to be mounted on bar 05. Clamped to roll k by bolt 70' is a deflector k which bevels the stack like the inclined tongues f. The blank engaging surface of roll k' is roughened by nurling as shown in Fig. 7 and the purpose of this is to cause the exposed surface of the roll between the lower end'of the deflector k and carrier (1 toproperly restrain and hold back all of the lowermost blanks of the stack except the bottom blank. 'Besides shapingthe stack the deflector 70 serves; to guide the front ends of the blanks under roll is and prevent .clo Inge hat Iclaim is: 1, In a machine for feeding box blanks or the like the combination of a conveyer on which a stack of blanks are supported; a gage in frontof said stack for controlling the feed of the blanks; one or more stackshapi-ng stops alongside said gage; a rotatable support across and beneath the conveyer to support the latter adjacent the stops; and a rotatable wheel projecting through the conveyer to cooperate with the a e. r g The combination with" a conveyer adapted 'to'support a stack ofblanks of a stac -sha ing stop consisting of an inclined tongue 0 spring metal; a bracke'tto which said tongue is fastened at one end with the other end of the tongue cooperating with the conveyer, and a I screw engaging the tongue intermediate its ends for adjusting the lower end 'of the tongue with relation tothe conveyer.

3. In a feed mechanism of the character described the combination of a conveyer adapted to support a stack of blanks; one or more stack-shaping stops in front. of the stack against which the latter is held by the movement of the conveyer and. co6per; ting with the conveyer to yieldingly o p pose the feeding of a blank;'a gage and an abutment cooperating therewith to control the feed of the blanks, said gage and abutment permitting only a single blank to pass at a time and said conveyer acting frictionally to carry said blank between the gage and abutment and force'it past the stack-shaping stops; and means to provide for forward and rearward relative adjustment between the gage and the stop or stops in a direction parallel tov the line of feed and according to variation in the shape of blank being handled. v

4. In .a machine for feeding box blanks or the like the combination of a conveyer on which a stack of blanks are supported, a gage at the front end of the stack to control the feed of the blanks; a stop at the front end of the stack; and an idle roll supporting and permanently elevating the rear end of the stack.-

EILIE W. LABOMBARDE. VVitne'ssesz' ARTHUR F. RANDALL, MARY G. HENNESBY.

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