US1323615A

US1323615A - Charles f

Info

Publication number: US1323615A
Authority: US
Publication date: 1919-12-02
Anticipated expiration: 1936-12-02

Description

c. F. Isoumum. SPEED GOVERNING MEANS FOR MOVING SHEETS. APPLICATION FIL-ED APR. 26| 1917. RNEWED OCT. Bv

Patented- De. 2, 1919.

CHARLES F. STODDARD, OF NEW YORK, N. Y.

SPEED-GOVERNING MEANSFOR MOVING SHEETS.

Original application ledgAugust 14, 1914, Serial No. 856,861.

` 1917, Serial No. 164,626. Renewed To @ZZ/whom t may concern.'

Be it known that I, CHARLES F. STODDARD, a citizen of the United States of America, residing in the city of New York, county and State of New York, have invented an improvement in Speed-Governing Means for lMoving Sheets, of which the following is a specification.

This invention relates to speed governing means for a moving sheet: Among other objects the invention provides apparatus to coperate with a moving sheet of paper or the like and to maintain a predetermined speed relation lbetween such cooperating means and the sheet s o that by the 'control of either the coperating means or the moving sheet, the speed of the other may `be accurately governed.

F or illustration the invention is shown embodied in a machine for making perforated no-te sheets for mechanical musical instruments. This particular embodiment of the invention is the subject mattei' of a copending application filed August 14, 19,14, Serial No. 856,861 of which this application is a division.

The character of the invention may be readily understood by reference to the accompanying drawings, in which,

Figure 1 shows diagrammatically one practicable embodiment of the invention which has been selected for illustration;

F ig. 2 is a sideelevation of the pattern sheet controlling mechanism;

Fig. 3 is a section on an enlarged scale -upon a line 3 8 of Fig. 2 and including a section of a valve mechanism shown in F 1 and more fully described hereinafter; and l' Fig. 4 is a section on the line 4.1 of Fig. 3.

Referring to the drawings, the pattern or stencil sheet 2is shownvat the upper left hand corner of the sheet, and the note sheet material to be punched is shown at 3 at the lower right hand corner of the sheet.

The specific apparatus fis intended to cause the pattern sheet 2 and the note Vsheet material 3 to be fed in proper relationship. To

illustrate one form of pattern sheet suitable to be used, the sheet 2 is shown as provided with perfcrations t corresponding to perforations intended to be punched in the note -sheet material 3. The note sheet ma- Specication of Letters Patent.

OctoberrS, 1919.

Patented Dec. 2, 1919.

Divided and this application filed April 26,

Serial No. 329,410.

meshes with the gear 12 upon the shaft of the take-up roll 9. As illustrated, the motor M is a pneumatic supplied with suction through the duct 18, andv this supply of suction is controlled as hereinafter described to regulate the operation of the motor.

The pattern sheet 2 illustrates a prime controller of a punch selecting mechanism which may be of any practicable type. For purposes of explanation, oneV practica-'ble form of punch selecting mechanism is shown in the drawing as comprising a tracker bar 15 provided with vents to be opened by the perforations a of the pattern sheet 2. Each vent is connected by a duct 16 with the controlling valves of a power pneumatic 18. A chest for the several pneumatics 18 is connected by duct 19 with a source of exhaust. As will be understood by those skilled in the art, when a vent of the tracker 15 is opened by a perforation 4:, suction from the duct 19 is admitted to a power pneumatic 18, causing the latter to collapse. When thus collapsed, the pneumatic 18 lifts a selector slide 20 in the perforating machine; and when the tracker vent is again closed permitting the power pneumatic 18 to expand again, the slide 20 is drawn downwardly to the position shown in the drawing by a spring 21.

It will be understood that there is a series of the selector slides 20 corresponding each to a punch for punching a note perforation in the note sheet material. One complete set of selecting and punching devices is shown diagrammatically in the drawing; and it will be understood that these parts are reduplicated as many times as may be necessary to provide for punching the desired number of rows of perforations.

The selecting mechanisml comprises a horizontally reciprocating cross head 22 carrying selector pins 23 which are so mounted as to slide lengthwise readily in the cross head 22. This cross head 22 is connected by a link 25 with an eccentric upon the shaft 26, which is rotated continuously during the operation of the machine, thereby moving the cross head 22 and lts gang of selector pins 23 toward and from the selector slides 20. A lever 28 fulcrumed at 29 bears at its upper end against the head of the selector pin 23 and is held in engagement with the selector pin head by a spring 30, which tends always to rock the lever 28 in a contraclockwise direction. The lower end of the. lever 28 is pivotally connected to a selector bar 32, the right hand 4end of which in the drawing rests in a slideway in a vertically reciprocating lcross head comprising the two connected

parts

33, 34. The part 34 carries the punches 35, and the part 33 includes the punch-driving bar 36.

The

cross head

33, 34 is reciprocated vertically in appropriate guideways by an eccentrlc upon the shaft 26, which is unnecessary to be shown. This suffices to shcfw ythat for each complete revolution of the shaft 26 the

cross head

33, 34 is moved downwardy and then upwardly through one comple-te reciprocation. The punches 35 are carried sufficiently loosely in the cross head piece 34 to permit them to drop against the note sheet material 3 without punching the same except when a selector bar 32 has been moved far enough toward the right in the drawings to be interposed between the drivingr bar 36 and a punch head.

he punches 35 are arranged to slide vertically in a stripper bar 38, which overlies the note sheet material 3, supported at the punching point upon a die 39. l

lVith the described arrangement, when the cross head 22 is moved toward the left in the drawing, the lever 28 is permitted t0 rock slightly contraclockwise, and thereby to move the 'selector bar 32 toward the right.

' If the selector slide 20 re'mains in the posi tion shown, `the movement of the selector pin 23 is arrested in such a osition that the selector bar'32 is not permitted to move far enough to be interposed in driving position between the punch 35 and the driver bar 36; but if the selector slide y20 has been lifted (by opening of the corresponding tracker vent) the cut out portion 40 of the selector slide is thereby positioned opposite the selector pin 23, permitting a sufficient movement of the pin, the lever 28 and the selector bar 32 to move the latter into driving position and cause its corresponding punch to be driven through the note sheet material 3. As will be understood by those skilled in the art, the horizontal reciprocation of the selector cross head`22 and the vertical reciprocation of the

punch cross head

33, 34, are relatively so timed that the cross head 22 is moved toward the left to position the various selector bars 32 appropriately to the perfoi-ations 1to be punched, preparatory tothe descent of the

cross head

33, 34 to drive the selected punches through the note sheet material.

It is to be understood that the punch selecting and punching mechanism just described is merely illustrative, and any suitable equivalent or substitute may be employed.

The note sheet material 3 may be fed through the punching mechanism in any practlcable manner, as, for example, by some such feeding mechanism as that described in United States patent to Davis No. 659,053, dated October 2, 1900, one form of which feeding mechanism is shown diagrammatically in the present drawings. As there shown, the note sheet feed mechanism is viewed in section on a vertical plane substantially bisecting the feed mechanism transversely of the direction of feed, which is t0- ward the right in the drawing. This feed mechanism comprises an upper apron and a lower apron 52, each apron consisting of a pair of parallel sprocket chains (only one of which is shown) connected by slats or cross bars 53 on the upper apron and 54 on the lower apron. The cross bars 53 and 54 on the respective aprons are so disposed that a cross bar 53 reglsters with a cross bar 54: on opposite sides of the note sheet material 3 on the ad'acent runs of the two aprons, so as t0 grip t e note sheet material 3 between the cross bars with sufficient pressure to cause the note sheet material to accompany the aprons during their movement. As this feed mechanism is shown, the aprons are driven intermittently by a pawl 56 engaging a ratchet 57 upon a shaft 58 of-one of the sprocket wheels 59 for the upper apron. Also fixed upon the shaft 58 is a gear 60 meshing with the gear 61 upon the shaft 62 for a sprocket wheel 63 of the lower apron. The pawl 56 drives this ratchet 57 in a contraclockwise direction and thereby, through the gears and 61, drives the two aprons in the directions indicated by the arrows in the drawings.

The `pawl 56 is reciprocated by a pitman 65 connected to an eccentric 66 u on the shaft 26. The eccentric 66 is so isposed upon the shaft 26 that the

aprons

50 and 52 remain at rest during the downward movement of the

cross head

33, 34 to drive the punches; and when the

cross head

33, 34 is moved upwardly, the eccentric 66 causes the aprons to be driven through one feed step so as to present a new part of the note sheet material 3 in position to be punched.

The description thus far has pertained toV the mechanism for selecting the punches and operating them to punch the note sheet ma.-

tcrial, and the feed mechanism for moving the note sheet material through the unching mechanism. The manner in which t e prime selecting device illustrated by the Pattern ship to the 'feed of the note sheet material Will be next described.

' In the illustrative embodiment of the invention, lnote sheet material 3 is fed intermittently at a uniform speed, one feed step for -each complete revolution of the shaft 26. In this specific embodiment, therefore, the note sheet feed may be regarded as a constant, and the feed of the .pattern sheet 2 as a variable which is regulated :by the apparatus next described so as to insure the proper relative positioning Vof the note sheet material and pattern sheet for the succession of punching operations.

As shown in-F ig. '2 the pattern sheet 2 passes over a drum 70 which drum is shown in longitudinal section in Fig. v3, and transverse section in VF ig. 4 As shown in Fig. 3, the drum 70 has a stationary axle 72, to which is pinned a stationary core 73 which is cylindrical and encircled by the rotating sleeve 74. The core 73 provides a snugly fitting bearing for the sleeve 74. An idle roller, comprising the sleeve 7 5 and ends 76, 77 is mounted to rotate freely on the stationary axle 72. A

The sleeve 74 has secured to it a -gear 79 which is positively driven (las presently described).

The stationary axle 72 has an axial duct 80 which communicates With a radially extending chamber 81 (see also Fig. 4) which chamber presents at the periphery of the core 73 a mouth extending through substantially 60"of the circumference of the core 73. The sleeve 74 is provided with a series of

ports

83, 84, 85, 86, 87 and 88. which. are 'arranged to communicate in succession with the chamber 81 as the sleeve 74 is rotated.

In the margin of the pattern sheet 2 is provided -a row of perforations 90, 91 and 92 spaced uniformly, and so located upon the note sheet as to register with the

ports

83, 84, 85, etc.. in the driven sleeve 74 as illustrated in Fig. 4.

Tithd the described arrangement, the mouth of the chamber 81 remains closed at all y times except when a marginal perforation in 4the pattern sheet 2 coincides more or less with one of the

ports

83, 84, etc., of the sleeve 74.v For example, the space betweenthe port 83 and the next port 84 is such that the mouth of the chamber 81 will never be opened to `an yextent greater than the cross section of one of the

ports

83 or 84. And if the

ports

83 and 84 be both closed by unperforated parts of the pattern sheet then the mouth ofthe chamber'81 is e'ectually seal`ed.-

When, however, the perforation in the pattern sheet coincides more or less 'with a

port

83 or 84, then atmosphere is admitted in great or less degree t0 the chamber 81 andthence through the lduct 80 in the axle 72and to a diaphragm chamber 100, the diaphragm of which carries 'a throttle valve 102 interposed between a duct 103 leading to a source of exhaust, and the duct 13 through which the motor M is exhausted for operating. The spring 104 may be provided to oppose the action of the diaphragm over the chamber 100, and to assist in the operation ofthe valve 102.

As will appear to those skilled in the art, when a marginal perforation of the pattern sheet coincides more or less with one of the

ports

83, 84, etc., of the sleeve 74, atmosphere, admitted thereby to the chamber 81 and duet 80, serves to lift the valve 102 more or less according as the admission of atmosphere is more or less compensated by the exhaust through a bleed 106. The lifting of the valve 102 tends to restrict communication between the exhaust duct 103 and the motor duct 13 so as to diminish the speed of exhaust from the motor and thereby reduce the speed of the motor. Thus the speed of the motor which drives the pattern sheet is regulated by the coperation between the marginal perforations 90, 91 and 92 in the pattern sheet with the rotating sleeve 74.

The gear 79 which is fixed upon the sleeve 74 meshes with the gear 110 upon a shaft 111 connected in any suitable manner to be driven by a shaft 112 which, in turn, is driven through the beveled gear 113 from the main shaft 26 of the perforating mechamsm.

F or the purpose of the specific apparatus, the train of gearing between the shaft 26 and the lgear 79 is such that one revolution of the gear 79 and sleeve 74 is accompanied by thirty revolutions of the shaft 2-6. As already explained, each revolution of the shaft 26 causes one reciprocation of the punches 35; therefore, there are thirty punching operations during ene complete revolution of the sleeve 74. There are six of the

4ports

83, 84, etc. in the sleeve 74 spaced 000 apart; therefore, during the revolution of the sleeve 7 4 through the distance between one port 83 and the next, live punching operations occur. In other ".vord's, during the revolution of sleeve 74 through such distance between one port and the next, the pattern sheet 2 should move through a distance Corresponding to live punching operations. It is to be understood that the particular gear ratio between the shaft 26 and the gear 79 and the particular division of the sleeve 74 into sextants'by the ports 83, etc., constitute merely one practicable arrangement described for illustration.

rlhe perforations 90, 91, l92, etc., in the pattern sheet 2 are preferably s o spaced that the advance end of one perforation is at a distance from the advance end of the next following perforation equal to the distance from the advance edge of one of the ports 83 (as the sleeve 74 rotates) from the advance edge of the next following port 84, so that the perforations 90, 91, etc., in snccession will coincide more or less with the .

respective ports

83, 84, etc.

The operation of the illustrative apparatus hereinbefore described is as follows:

The pattern sheet 2 is insertedin the machine andV passed over the drums and secured to the take-up roll 9 as shown in Figs. 1 and 2; and then the perforating mecha- `nism is started and the shaft 26 begins to rotate. The operation will be more readily poses of the specific apparatus-when the valve 102 is wide open, the pattern motor M operates at comparatively high speed so as to feed the pattern sheet at a greater linear speed than the peripheral speed of the sleeve 74.y Thus if, when the machine is started, the pattern sheet has no perforation in position to coincide more or less `with one of the

ports

83, 84, etc., then atmosphere will be shut 0H from the chamber 81, and the exhaust through the bleed 106 willhold the valve 102 open in the position shown in Fig. 3. Therefore, there will be free communication between the exhaust supply duct 103 and the motor duct 13, and the motor will be driven at high speed. Some one or other of the

ports

83, 84, etc., is always in communication with the chamber 81; and therefore, during the initial rapid feed of the pattern sheet a port then communicating with. the

' chamber 81 willbe overtaken by one of the perforations 90, 91, etc., so that atmosphere will be admitted through the perforationV and the port which it has overtaken, into the chamber 81, and thence to the diaphragm chamber 100. This will lift the valve 102, restrict the exhaust from vthe motor chest and reduce the speed of the pattern feed. If the speed of the pattern sheet has caused a perforation therein to open a port in the sleeve 74 to a considerable extent, the speed of the pattern feed may be reduced to less than the peripheral speed of the sleeve 7 4, in which case the then more rapidly moving sleeve will advance its acting port enough to diminish the opening between that port and the acting perforation of the paper thereby reducing the flow of atmosphere into the diaphragm chamber 100 and tending to balance that flow of atmosphere with the eX- haust through the bleed 106. That will permit the valve 102 to open slightly and increase the speed of feed of the pattern sheet. This, in turn, tends to advance the pattern sheet relatively to the sleeve 74 so as to enlarge the opening through the acting perforation and the acting port of the sleeve, thereby increasing the flow of atmosphere to the diaphragm chamber 100, and tending to overbalance the bleed through the duct 106, thereby again opening the valve 102 to decrease the feed speed of the pattern. The result of` these various tendencies is that at all times the acting perforation of the pattern sheet will overlap the acting port in the sleeve 74 to an extent sufficient to admit the atmosphere through the chamber 81 into the diaphragm chamber 100 in sufficient volume to substantially balance the exhaust through the bleed 106. Thus the valve 102 1s held in a floating condition, so to speak, to maintain a substantial constant speed of the motor M, and the pattern sheet 2.A This speed, so maintained, renders the speed of the pattern feed equal to the peripheral speed of the sleeve 74, which is a constant. 1f the speed of the pattern sheet increases, the atmosphere bleed past the acting perforation and the acting port increases sufficiently to close the valve 102 somewhat, and reduce the feed of the pattern sheet. In fact, the described apparatus maintains a uniform speed of the pattern sheet equal to the peripheral speedv of the sleeve 74; and therefore in the specific arrangement described, the pattern sheet is caused to move continuously through successive increments of dlstance, each increment corresponding to a punching operation. In the specific apparatus, the note sheet material 3 is driven uniformly with the rotation of the shaftv 26,' and therefore the feed of the note sheet material is effectually correlated in desired manner with the feed of the pattern. v

It is to be understood that the invention is not limited to the particular construction,

organization and mode of operation hereinbefore described for illustration, contrary, the invention may be variously embodied and the particular apparatus may variously modified within the scope of the' subjoined claims.

I claim as my invention: 1. Speed governing means for a moving On thev fis sheet comprising, in combination, sheet moving means; a drum over which the sheet passes; and pneumatic means for maintaining the sheet in desired relation with said drum. 2. Speed governing means for a moving sheet comprising, in combination, sheet moving means; a drum over which the sheet' moves; cooperating openings in the sheet and said drum; and pneumatic means for maintaining said openings in desired correlation.

3. Speed governing means for a moving sheet comprising, in combination, sheet moving means; a drum over which the sheet passes; coperating openings in the; sheet and said drum; and speed governing means forthe sheet moving means controlled by cooperation between said openings.

4f. Speed governing means for a moving sheet comprising, in combination, variable- .speed sheetmoving means; a device driven at a uniform speed, and cooperating means on the sheet and said device for governing the speed of movement of the sheet.

5. Speed governing means for a moving sheet comprising, in combination variable speed sheet moving means; a device driven at uniform speed; and speed controlling means for the sheet governed by said device.

6. Speed governing means for a moving sheet comprising, in combination, variablespeed sheet moving means; a device moving at uniform speed; and means for causing the sheet to move at a substantially uniform speed predetermined by the speed of said device. Y

7. Speed governing means for a moving sheet comprising, in combination, variablespeed sheet moving` means; a device moving at luniform speed; means controlled conjointly by the sheet and said devi-ee for maintaining-a substantially constant pneumatic bleed; and means governed by said bleed for regulating thev speed of the sheet.

8. Speed governing means for a moving sheet comprising, in combination, a pneumatic motor for moving the sheet; a drum over which the sheet is moved; cooperating openings in the sheet and drum; and a throttle valve for said motor controlled by vsaid cooperating openings.

9. Speed governing means for a moving sheet comprising, in combination, a motor for moving the sheet; a drum over which the sheet moves; and cooperating means on said sheet and drum for controlling the speed of said motor.

10. Speed governing means for a moving sheet comprising, in combination, a motor for moving the sheet; means governed by the sheet for producing a variable atmospheric bleed; means for producing a suction bleed opposed rto said atmospheric bleed; and governing means for said motor controlled by coperation of said bleeds.

11. Speed governing `means for a moving sheet comprising, in combination, means for moving the sheet; a drum over which the sheet passes, and having ports therein to coperate with perforations in the sheet; andr means to govern the movement vof the sheet controlled by coperation between said said ports and perforations.

12; Controlling means for a moving sheet comprising, in combination, sheet moving means; a moving member over which the sheet moves, eoperating openings in the sheet and said member; and means for maintaining said openings in desired correlation.

18. Controlling means for a moving' sheet comprising, in combination, sheet moving means; a moving member over which the sheet moves; cooperating openings in the sheet and said member; and means for maintaining' said openings in the sheet in partially overlapping relation to the open-` ings in said member.

la. Controlling means for a moving sheet comprising, in combination, sheet moving means; a member having a movement like the movement intended for the sheet; and Governing means for the sheet moving means for causing the sheet to move at substantially the speed of said member.

15. Controlling means for a moving sheet comprising, in combination, sheet moving means; a rotating drum driven at a speed desired for the sheet, said Vdrum having a plurality of equally spaced perforations in its surface; means to hold the moving sheet in partial contact with the drum, said sheet having a plurality of perforations spaced from each other to correspond with the spacing of the drum perforations; and governing means for the sheet moving means controlled by the registration of the sheet perforations withthe drum perforations.

16. Controlling means for moving sheet comprising, in combination, sheet moving means; a rotating drum driven at a speed desired for the sheet and having a plurality of equally spaced perforations in its surface; means to hold the moving sheet in partial contact with the drum, said sheet having a plurality of perforations spaced from each other to correspond with the spacing of the drum perforations; and a throttle valve for the sheet moving means tending to open and increase the speed of the sheet as the area of registration between sheet perforations and drum perforations is decreased.

17. Controlling means for a moving sheet comprising, in combination, sheet moving means; a rotating drum driven at a speed desired for the sheet and having a plurality of equally spaced perforations in its surface; means to hold the moving sheet in partial contact with the drum, said sheet having` a plurality of perforations spaced from each other to correspond with the spacing of the drum perforations; Vand a throttle valve for the sheet moving means tending to close and decrease the speed of the sheet as the area of registration of sheet perforations and drum perforations is increased.

18. Controlling means for a moving sheet y comprising, in combination, a member havmg a movement like the movement intended 10` tions spaced to correspond with the distance between perforation's in the sleeve; and a. throttle valve operatively connected with said chamber and controlled. by the coperation of the sleeve perforations and the sheet perforations.

In testimony'whereof, I have signed my name to this specification this 24th day of April, 1917.

CHARLES F. STODDARD.