US1140889A - Machine for making stencil-strips. - Google Patents

Description

s. ELLIOTT. MACHINE FOR MAKING STENCIL STRIPS.

APPLICATION FILED MAY 19, I913.

lgmma gg Patented May 25,1915.

2 SHEETS-SHEET 1.

M x WW M 2% W5 Md 2 d A 6 k A UU W 7 Gn l v s. ELLIOTT. MACHINE FOR MAKlNG STENCIL STRIPS.

APPLICATION FILED MAYIQ, I913.

Patented; May 25, 1915 2 SHEETS-SHEET 2.

Lmww

STERLING ELLIOTT, 0F NEWTON, MASSACHUSETTS.

MACHINE FOR MAKING STENCIL-STRIPS.

Specification of Letters Patent.

Patented May 25, 1915.

Original application filed. May 11, 1912, Serial No. 696,608 Divided and this application filed May 19, 1913.

- Serial No, 768,450.

To all "HZJOYH/ it may concern:

Be it known that I, STERLING ELLIOTT, a citizen of the United .States, residing at Newton, in the county of Middlesex and State of lsiassachusetts, have invented an Improvement in Machines for Making Sten oil-Strips, of which the following is a specification.

in Letters Patent #1,034,GO0, dated August 6, 1912, a stencil-strip is shown composed of paper from which paper stencils are cut. Said stencil-strip is composed of a strip of paper, termed the.blank-strip", placed between the folds of another strip of paper, termed the frame-strip, the said strips being adhesively secured together. The folded frame-strip has holes cut in it, arranged in pairs, side by side, so that the holes of each pair register with each other when the strip is folded, and said folded strip is scored lengthwise between the holes of the successive pairs to define the line of fold and to cause' the portions of the strip when folded to lie flat upon the blank-strip.

This invention relates to a machine adapted to produce theframe-strip, being autoinatic in operation; and involves many combinations of elements which are especially designed to perform the work intended for them.

The automatic machine here shown, for the purpose of illustrating my invention, comprises mechanism constructed anel arranged to feed forward a strip of paper to form the frame-strip, and to cut holes in. said strip, which holes are arranged in pairs, side my side, and at regular distances apart, and score said strip continuously between the holes of successive pairs to enable the strip to be folded, whereupon the holes of each pair register with each other, thereby to form the frame-strip, and said mechanism is of a rotary character and adapted to move forward and cut the strip of paper by a continuous rotary ll'lOtlOll of its parts. An tomatic stop-ping and starting means are pr rably p'ovided for said feeding and cutt ig-iueehauism l is controlled by "the. strip whiclris i ed therefrom, so ic and do ii cut 1. Such form of well adapted for lite l liver-ed may regula mechanism is especial]. this work, for the reas u ti it verv rapid quadraiigular si production of stencil-strips of the aforesaid application.

Figure 1 is aside elevation of strip feeding and cutting machine embodying this in vention. Fig. 2 is an enlarged plan view of the feeding and cutting-mechanism for the frame-strip. Fig. 3 is an enlarged end view of the rolls constituting the feeding and cutting-mechanism for the frame-strip. Fig. 4is afront elevation of the feeding and cutting rolls shown in Fig". 3, Fig. 5

is a transverse section of a pair of rolls employed to remove the pieces from the framestrip which are cut by the cutting-roll. Fig. 6 isa front elevation of the rolls shown in Fig. 5. Fig. 7 is a plan view of a portion of the frame-strip.

Referring particularly to the machine as here illustrated, the strip 25 of paper, such as tag stoclt or some similaifkind of paper, and of the desired width to form the framestrip, is drawn from a roll 26, Fig. 1, over a plaue-surfaced idle-roll 27, and then between horizontally arranged upper and undcrguide- plates 28, 29, by a pair of positively driven rolls 30, 33, (see Figs. 2, 3- and 4), which rolls are also constructed to cut block's of, of any suitable construction which are supported by the framework. It i positively driven, and as here slu'nvn, has secured to i journals a. small toothed or tn prspose. 3 represents the e pair. is formed as i cylinv'irical surface arranged in quadrangue strip of paper so that pod pieces maybe removed ".i. and, as here shown, ingularly arranged ribs are to form holes four such quadri employed, which are arranged in two pairs, and designed to cut the strip to produce two pairs of holes during each rotation, the holes of each pair being side by side. It also has 'it forward, said ribs being arranged at opposite sides of the'rib 35. It is journaled at its ends in bearing-blocks 37, supported by the frame-work, and is positively driven,-

having secured to one of its journals a smalltoothed-gear 38, for this purpose, which is in mesh with the toothed-gear 32. The bed-roll is made of hardened steel, and it is designed'and intended that the cutting ribs 34 on the cutting-roll shall terminate closeto but-free from contact with the surface of said'bed-roll, so that the stripof paper will be cut sufficiently to enable the quadrangularly shaped pieces to be subsequently removed by suitable means to be hereinafter described, but the rib does not terminate quite as close to the surface of the bed-roll, as it is only employed to score the strip.

The cutting ribs 34, 34, scoring-rib 35, and

, plane-edged feeding- ribs 36, 36, are very carefully and accurately formed, and means are provided to adjust the'roll -33,'bearing them toward and from the bed-roll 30, to cor: rectly position it with respectthereto.

.Referring to Fig. 3, long screws 40, 40, eX- tend through holes in the frame-work and through holes in the upper partof each bearing-block 37, and through screw-threaded holes in the lower part ofeach bearing-block 37, and their ends engage the tops of the bearing-blocks 31, so that the bearing-blocks 37, are connected with and adapted to be moved by the turning of the screws and the.-

position of the upper roll relative to the bedroll thereby adjusted.

The strip 25, on leaving the cutting- rolls 30, 33, is fed forward to a pair of rolls, (see Figs. 5 and 6), which are constructed and arranged to remove from it the severed or substantially severed quadrangular pieces. As here shown 45 represents the upper-roll of the pair. It is formed as a cylinder and journaled' at its ends in suitablebearings, but is driven by gears with its fellow roll when the strip of paper is arranged between them. It has ribs 46 arranged on and extended partially around its cylindrical sur-- face, arranged in pairs,there being two pairs on one side of the cylinder, arranged slde by side, and two pairs on the other side of the cylinder, arranged side by side, Faehlpair of ribs is made of a lengthand" WldthbOIIG- sponding to the length and width of the quadrangular pieces which are to be re-. moved fromthe strip, and of the holes, to be thereby produced. Fingers 47 are arranged above the roll which'en age tangen tially the cylindrical surface of the roll at the sides of the ribs, and which act to prevent the strip from winding on the roll in case it should have a tendency to do so. 48 represents the under-roll of the pair. -It is formed as a cylinder and is journaled at its ends in bearings, and is positively driven,

having secured to one of its journals a small toothed gear 49 for this purpose. It has several circumferential grooves, as 50, arranged opposite the ribs 46, to receive said ribs and thereby to enable them to extend below the meeting plane of the two rolls, so

.- as. to exert a downward pressure upon the portions of the strip to be removed, and to detach them from the strip. It has-also circumferential grooves, as 5.l, at the bottoms of the grooves 50, .arranged opposite the spaces between the ribs 46, which admit of the employment of fingers 52, arranged tangentially to its cylindrical surface, which prevent winding of the pieces onmthe roll in case they should have atendency to do so. Its plane or ungrooved portions are in parallel with and adapted to coeperate with the portions of the roll 45, at the sides of the ribs 46, to engage and feed the strip forward.

As the circumference of the ribbed 'portions of the. upper-roll is greater than the circumferences of the grooved portions of the under-roll, it will be seen that when the ribs '46 engage the quadrangular pieces ,Which are to be removed from the strip and they act to depress them with relation to the strip, and as represented in Fig. 7, they also act to 105, advance the "detached pieces at a greater rate of speed than the strip is being moved, so that the forward ends of said pieces will be projected beyond the corresponding ends of the holes, which .is an advantage. Individual driving means is herein provided" for this group of mechanism, which is adapted tobe automatically started and stopped according to the amount of strip which is required, and herein an electric-motor 55 is employed as a driving-means, its shaft bear ing a pinion 56, which engages a large toothed gear 57', secured to a shaft bearing a small toothed gear 58,which engages a large toothed gear 59, secured to one of the jour- 12W nals of the cutting-roll 33, thereby to rotate said roll; and the toothed.- gear 38 on the other journal of .saidcutting roll being in mesh with the toothed gear 32, on the bedroll operates to rotate said bed-roll; and said 12 toothed gear 32 engages a large. toothedgea'r 60, which in turn engages the small toothed" gear 49, on thegrooved under-roll 48, thereby to rotate said'under-roll. As the motorshaft is rotated th'e several rolls are rotated and the strip is continuously fed along and cut and the pieces detached from it. The detached pieces 62,- represented by dotted lines Fig. l, are permitted to fall by gravity down a suitable chute, and the perforated strip 25 is carried along over an idle-roll 63, thence'under a gravitating take-up 64:. As a means to automatically start and stop this group of mechanism, the motor 1s controlled, v

and the switch-arm is moved to open the circnit of the motor, thereby to stop this group of mechanism. As the take-up roll rises the switch-arm is moved in the opposite direction to close the circuit of the motor, thereby to start this group of mechanism.

1. In a machine for making frame-strips for stencils',.the combination of a plane-sun faced bed-roll and a roll having on its surface cutting ribs, feeding-ribs and a scoringrib, the engaging portions of said ribs terminating in different planes with respect to the surface of the bed-roll, said feedingribs and scoring-rib. extending entirely around the roll, said rolls cooperating feed forward a-strip of paper and cut hoies therein and score it longitudinally, means to rotate said rolls, and means to remove cutting means,

cut pieces from the strip, substantially as described. I

2. In a machine for making frame-strips for stencils, the combination of rotary stripcutting means for the frame-strip, a ribbedsurfaced roll and a grooved-surfaced roll, arranged in parallel relation with said stripsaid rolls cooperating to remove the cut pieces from the strip while the strip passes between them, and means to rotate said-rolls, substantially as described.

3. In a machine for making frame-strips for stencils, the combination of rotary means to feed forward and cut holes in a strip of paper to form the frame-strip, electricdriving-mechanism for said means including an electric-motor, aswitch for the circuit of said motor, and means arranged to automatically operate said switch to start and stop the motor, substantially as described.

4: In a machine for making frame-strips for stencils, the combination of rotary means to feed'forward and cut holes in a strip of paper to form the frame strip, electric' driving-mechanism for said means including an electric-motor, a switch for the circuit of said motor, a take-up roll for the strip, the position of which is controlled by the strip, and'means connecting said take-up roll with said switch, substantially as described.v

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

STERLING nLLiorr.

R itnesses:

on News,

Davis,

Images