US1324724A

US1324724A - browning

Info

Publication number: US1324724A
Authority: US
Publication date: 1919-12-09
Anticipated expiration: 1936-12-09

Description

W. H. BROWNING.

TAKE-UP 0R WINDING MECHANISM FOR FABRICS OR THE LIKE.

APPLICATION FILED APR.14. IBM.

1 24,724. Patented Dec. 9, 1919.

' 3 SHEETS-SHEET l- W wazzerJZBrowmZ? rew/MIL. %/fim .W. H. BROWNING. TAKE-UP 0R wmnme MECHANISM r01: FABRICS OR THE LIKE.

APPLICATION FILED APR. l4. 19H.

Patented Dec. 9, 1919.

3 SHEETS-SHEET 2- Z5'zven Z19 wazzerx. Br w 0,, Mex

W. H. BROWNING. TAKE-UP 0R WINDING MECHANISM FOR FABRICSVOR THE LIKE.

APPLICATION FILED APR. 14. I91].

'1 24,724. Patented: Dec. 9, 1919.

'3 SHEETS-SHEET 3.

UN lTEiD STATES PATENT OFFICE.

WALTER I-IENRY BROWNING, OF WEMBLEY, ENGLAND.

TAKE-UP 0B, WINDING MECHANISM FOR FABRICS OR THE LIKE.

7 Application filed April 14, 1917.

To all whom it may concern Be it known that I, l/VALTER HENRY BROWNING, a subject of the King of Great Britain, residing in W'embley, England, have invented certain new and useful Improvements in Take-Up or Winding Mechanisni for Fabrics or the like, of which the following is a specification.

This invention relates to improvements in take-up mechanism for apparatus of the type in which, for any purpose, such as in recording. apparatus, one or more sheets or hands of paper, fabric or the like material is fed step-by-step and is wound onto or taken up by a rotated drum or roll. Ap paratus of the character to which the invention is applicable are disclosed in U. S. Patents No. 687,866, November 26, 1901, to P. Poe, and No. 1,06'l,753, May 13, 1913, to V. H. Kirchhoff. The invention is designed to provide improved means for taking up on the rotated drum or roll equal or approximately equal lengths of such a sheet or band as it is fed, notwithstanding the increasing diameter of said drum or roll owing to the growing number of windings of the material thereon.

It consists essentially of a drum or roll positively rotated at each step of the feed to take up a portion of the sheet or band fed and a suitably mounted spring or weight urged wheel or disk adapted to be positively rotated against its spring or weight, and on release to be urged by the spring or weight to further rotate the drum in the positive direction to takeup any remaining slack in the sheet or band. V

The invention will be described with reference to the accompanying drawings which illustrate one form of the invention as applied to the take-up of a recording apparatus, the particular recording apparatus illustrated being similar to that described and shown in U. S. patent application Serial No. 162,185.

Figure 1 is an elevation partly in section showing parts of the improved take-up mechanism in one position.

Fig. 2 is a similar view showing the parts in another position. 1

' Fig. 3 is a plan view with the parts as shown in Fig. 1.

Fig. 4.- is a sectional side view of the abovementioned recording apparatus, certain. parts being omitted.

Specification of Letters Patent.

Patented Dec..9, 1919.

Serial No. 162,186.

Fig. 5 is a sectional side View of the recording apparatus in a different section plane showing the parts illustrated in Fig. l as applied to the apparatus.

The recording apparatus shown in Figs. at and 5 being of the kind constructed and operating as described in the specification accompanying the application above referred to needs no detailed description here but it maybe stated that it comprises three separate parts 4:, 5 and 6 on which are arranged three strips or bands of paper 1, 2 and 3, which bands, on being fed forward,

pass around a looper 19 and under a window 20 in the cover plate 20* where a record can be made. On again being fed forward one or more of the upper strips may be torn olf while the third strip is wound on the takeup spool 21 which is driven in the manner described below.

The mechanism for efiecting the feed of the strips of material is actuated from a main shaft 24 suitably mounted on the base of the casing 25 and carrying an operating handle 26 for rocking the shaft. Upon the shaft 24 is mounted the forked lever 27 which engages a pin 28 on the main operating slide 29 to reciprocate when shaft 2% is rocked. The slide 29 is mounted by means of guides 30 in a guide bar 31. I

The parts of the recording apparatus so far mentioned correspond to similarly numbered partsillustrated in the above referred to specification. The other members of the feed mechanism form no part of the present invention and need not be specifically referred to here. The take-up'spool 21, Fig. 5, is mountedon a shaft a, Figs. 1 to 5, suitably mounted on casing'25. Upon the shaft a is. keyed or otherwise secured a ratchet wheel 6 adapted to be operated by any suitable pawl device to give a positive rotation to the shaft at each step of the feed of the sheet or band of fabric or the like. As shown, the pawl c is mounted on an arm 0 pivoted freely on'the shaft o and caused to rock at each step of the feed by a stop (Z mounted on the reciprocating slide 29 of the feed mechanism,'a spring 0 or other means being provided to maintain the arm 0 in engagement with the stop (Z. When the stop 0! has a greater total travel than that of the arm 0, a stop or lug 6 may beprovided adapted to engage a pin or the like 0 on the arm 0 to arrest the movement of said arm under the impulse of spring 0 at a desired position. A weighted or spring operated detent f is provided to prevent any rotation of the ratchetor shaft a in the backward direction.

Also mounted upon the shaft a is a disk or part disk g which is free to rotate upon the shaft in a backward direction, but which, when moved in the forward direction, rotates the shaft with it, any suitable free wheel mechanism being interposed between the disk and the shaft. As shown, the disk 9 carries a spring urged pawl h adapted to engage the periphery of the ratchet wheel Z) in such a manner as to ride over it when rotating in the backward direction, but to drive it when rotating in the forward direction. Any suitable means may be provided for periodically rotating the disk 9 in a backward direction and such rotation may take place at or about the time that the wheel 5 is positively rotated in a forward direction. A spring is provided to return the disk 9 to normal or starting position and a spring or weight urged detent Z adapted to engage ratchet teeth on the periphery of the disk is also provided to'prevent such return to normal position until the detent is released.

As shown, the disk 9 is reversely rotated by means of the reciprocating part on which engages the lug n mounted on the disk and swings it around.

The part m is carried by a part 32 depending from the slide 29 and therefore reciprocates simultaneously with the slide which carries the stop (Z.

The detent Z under the action of its spring or weight normally engages the teeth on the edge of the disk g and thus prevents any rotation of the drum or roll under the action of spring is until the detent Z is released, which it is essential should not take place until after the positive rotation of the drum by the wheel Z and shaft a as above described. lhe detent Z may be released in any suitable manner at the time desired. As shown, the detent is released by means of a slide 0 having a lug p thereon adapted to engage the end of the detent Z to withdraw it from the teeth of the disk 9 and so liberate it to rotate forwardly under the action of the spring is. In the drawing, the slide is shown to be operated by a lug g on the part on en aging a corresponding lug 1" on the slide 0 at the end of its return stroke, a spring 5 bein provided to return the slide and permit the detent Z to engage the teeth on the disk when the part m again commences its forward movement.

It. is obvious that as the diameter of the drum or roll increases, the amount of slack to be taken up will be reduced and the movement of the disk 9 under the action of spring Z: will become less and less, from which it follows that when the slack is all taken up the disk 9 will still be under tension by the spring 7X3. Under these circumstances, and unless it was prevented, directly the strip or band commenced to be fed for ward, the spring is, rotating the disk g, would commence to take up the feed. The detent Z, however, engaging the teeth on the periphery of the disk 9 prevents such rotation and permits the positive rotation of the orum or roll to take place before releasing the disk to take up the remaining slack.

It is obvious, of course, that the length of material fed forward at each step of the feed to be taken up by the apparatus must not be less than the peripheral movement of the drum or roll at its maximum diameter when positively rotated by the movement of the lug (Z.

The operation of the apparatus is as follows Supposing a given length of the material 3 to have been fed forward and the drum or roll to be at less than its maximum diameter, the lug (Z now engages the arm 0 and rotates the wheel 6 and that on shaft a and with it the drum or roll 21. This causes the drum or roll to take up only a portion of the material fed forward, leaving a slack length of material still to be dealt with, the length of which varies according to the diameter of the drum or roll. At the same time that the shaft 0. was being positively rotated the disk 9 was rotated in a reverse direction, putting its spring is in tension. l/Vhen therefore, the detent Z is released on the return of slide 0, the spring is causes the disk 9 to rotate forwardly, which, by means of the pawl h, causes a further forward rotation of the shaft a and the drum or roll until the slack is taken up when the rotation of the disk 9 ceases. It will be obvious that any varying length of slack can be taken up from nothing up to a length equal to the peripheral movement of the drum corresponding to the full movement of the disk g.

It will be obvious that when the reverse movement of the disk 9 is equal to :that of the forward movement of wheel 6, the apparatus is capable of taking up a length of material equal to twice that wound on the roll or drum by the positive rotation thereof. In other words, the apparatus may be employedto take up equal lengths of material as they are fed forward until the diameter of the drum or roll, owing to the material wound thereon, is increased to twice its original diameter. It will, therefore,-be seen that the amount of slack taken up by the disk 9 will on each complete rotation of the shaft (0 with the drum or roll become slightly less, until, when the diameter is doubled, it becomes m'Z, the whole of the material fed being taken up by the 'positive rotation of the drum or roll, the

apparatus being, of course, calculated so that thepositive rotation of the drum or roll at its maximum diameter takes up, the full length. of material fed. If the possible movement of the disk 9 is made greater than that of wheel Z), the, ratio between the minimum and maximum diameters of the drum or roll may be correspondingly increased,

' Having thus describedthe said invention and the best means I know of carrying the same into practical effect, I claim 1. In apparatus of the type herein referred to, in combination with a step-bystep feed device, mechanism for taking up at each step of the feed approximately equal lengths of a band of flexible material fed by the said device, said mechanism comprising a shaft, a drum fixed to the shaft, means operated by a reciprocating part of the feed device for positively rotating the shaft and drum at each step of the feed to take up partof the fed material, automatically operating means for rotating the drum intermittently to a further extent to take up any remaining part of the fed material, and means operating to retain said automatically operating means in inoperative condition until aftervthe positive rotation of the shaft and drum has been effected.

2. In apparatus of the type herein referred to, the combination with a step-bystep feed device, of mechanism for taking up at each step of the feed approximately equal lengths of a band of flexible material fed by the said device, said mechanism comprising a shaft, means operated by a mov ing part of the feed device for positively rotating the shaft forwardly at each step of the feed, a drum fixed to the shaft and adapted at each rotation to take up a portion of the fed band, a disk mounted in free-wheel fashion on the shaft, an appliance constantly tending to rotate the disk forwardly against the tension of the band, means, operated by a moving part of the feed device, adapted to engage and hold the disk when the said tension is released during the positive rotation of the saidshaft,

thereby preventing the forward rotation of the disk, means operated by a moving part of the feed device for positively rotating the disk baokwardly against the action of the said appliance into an operative position during a positive forward rotation of the shaft and drum, means for releasing the said holding means after termination of the positive rotation of the shaft, and means, automatically operating when the disk is released, to couple the disk to the shaft whereby the shaft and drum receive a further rotation when the disk rotatesforwardly under, the action of the said appliance and any remaining slackvin the band is taken up. w

3. In apparatus of thetype herein, referred to, the combination with a step-bystep feed device, of mechanism for taking up at each step of the feed approximately equal lengths of a band of flexible material fed by the said device, said mechanism comprising a shaft, means for positively rotating the shaft forwardly at each step of the feed, said means consisting of .a ratchet wheel on said shaft, pawl means operated by a reciprocating part of the feed device, a drum fixed to the shaft and adapted at each rotation to take up a portion of the fed band, a disk mounted in free-wheel fashion on the shaft, an appliance con-' stantly tending to rotate the disk forwardly against the tension of the band, means, operated by a moving part of the feed device adapted to engage and hold the disk when the said tension isrelease'd during the positive rotation of the said shaft, thereby preventing the forward rotation of the disk, means operated by a moving part of the feed device for positively rotating the disk backwardly against the action ofithe said appliance into an operative-position during a positive forward rotation of the shaft and drum,,means for releasing the said holding means after termination of the positive rotation of the shaft, and means, automatically operating when the disk is released, to couple the disk to the said ratchet wheel whereby the shaft and drum receive a fur- Y ther rotation when the disk rotates forance and any remaining slack in the band is taken up. V

4:. In apparatus of the type herein referred to, the combination with a step-bystep feed device, of mechanism for taking up at each step of the feed approximately equal lengths of a band of flexible material fed by the said device, said mechanism com prlsing a shaft, means operated by a moving part of the feed mechanism for positively rotating the shaft forwardly at each step of the feed, a drum fixed to the shaft and adapted at each rotation to take up a porvtion ofthe fed band, a disk, provided peripherally with ratchet teeth, mounted in free-wheel fashion on the shaft, an appliance constantly tending to rotate the disk forwardly against the tension of the band, means, comprising a spring-urged detentcontrolled by a reciprocating part of the feed device, adapted to engagewith a ratchet tooth on the disk whenthe said tension is released durlng the positive rotation of the said shaft thereby preventing the forward rotation of the disk, means operated by a moving part of the feed device for positively rotating the disk backwardly against the action of the said appliance into an operative position during a positive forward rotation of the shaft and drum, means for withdrawing the detent from holding engagement with the disk after the termination of the positive rotation of the shaft, and means automatically operating when the disk is released, to couple the disk to the shaft whereby the shaft and drum receive a further rotation when the disk rotates forwardly under the action of the said appliance and any remaining slack in the band is taken up.

5. In apparatus of the type herein referred to, the combination with a step-bystep feed device, of mechanism for taking up at each step of the feed approximately equal lengths of a band of flexible material fed by the said device, said mechanism comprising a shaft, means for positively rotating the shaft forwardly at each step of the feed, said means consisting of a ratchet wheel on said shaft, pawl means operated by a reciprocating part of the feed device, a drum fixed to the shaft and adapted at each rotation to take up a portion of the fed band, a disk, provided peripherally with ratchet teeth, mounted in free-wheel fashion on the shaft, an appliance constantly tending to rotate the disk forwardly against the tension of the band, means, comprising a spring-urged detent controlled by a reciprecating part of the feed device, adapted to engage with a ratchet tooth on the disk when the said tension is released during the positive rotation of the said shaft thereby preventing the forward rotation of the disk, means operated by a moving part of the feed device for positively rotating the disk back- Wardly against the action of the said appliance into an operative position during a positive forward rotation of the shaft and drum, means for withdrawing the detent from holding engagement with the disk af \VALTER HENRY BROWNING.

Witnesses:

C. S. HOPKINS, B. H. DURHAM.