US1451866A - Manifolding attachment for typewriters - Google Patents

Description

AW. W, 1923. 1,45L86 M L. COSSITT MANIFOLDING ATTACHMENT FOR TYPEYTRITERS Filed June 28 1922 2 Sheets-Sheet l Apr. 117, 1923. HALfifi I M. L. COSSITT Y MANIFOLDING ATTACHMENT FOR TYPEWRITERS Filed June 28 1922 2 Sheets-Sheet 2 Q22 0): eye

Jim/am 2 0m Patented Apr. 17, 1923.

UNITED STATES PATENT oFricE.

MALCOLM L. COSSITT, OF ALAMEDA, CALIFORNIA, ASSIGNOR TO MANIFOLD IMPRES- SIONS CORPORATION, OF CARSON CITY, NEVADA, A CORPORATION OF NEVADA.

MANIFOLDING ATTACHMENT FOR TYPEWRITERS.

Application filed June 28, 1922. Serial No. 571,462.

T 0 all whom it may concern:

Be it known that I, MALCOLM L. Cossrrr, a citizen of the United States, residing at Alameda, in the county of Alameda and State of California, haveinvented certain new and useful Improvements in Manifolding Attachments for Typewriters, of which the following is a specification.

My inventlon relates to that class of manifolding attachments for typewriters in which one or more manifolding members are carried by and between spaced arms on rotatable members mounted on the platen carriage of the machine, parallel with the platen, and are adapted to be moved through a distorted path about two centers to and from functional position in the line of type impact.

The objects of m invention are to provide simple and e ective means for selectively operating said manifolding members and varying their position with relation to their width when in functional position, at each line spacing movement of the platen.

To these ends my invention consists in the novel manifolding attachments for type writers which I shall now fully describe by reference to the accompanying drawings, in which--' Fig. 1 is a front elevation of the right hand end of my manifolding attachment.

Fig. 2 is a to plan, broken in part, of the same.

Fig. 3 is a section on the line 3-4.of Fig. 2 showing the selectivespring member engaging the stud of the second ribbon carrying arm.

Fig. 4 is a section on said line 3-4: of

Fig. 2, showing the selective spring member engaging the stud of the third ribbon carrying arm.

Fig. 5 is a perspective view of certain of the parts at the righthand end of the attachment showing the ribbon carrying arms elevated and the selective spring member engaging the stud of the first arm.

Fig. 6 is a perspective view of some of the parts ,of Fig. 5 looking at them from the rear.

Fig. 7 is a view showing, somewhat diagrammatically tlie' line spacing. engagement of the platen ratchet and the pawl and ratchet control of the selective operating shaft of the'ribbon carrying arms.

Fig. 8 is a section on the line 8-8 of Fig. l.

Fig. 9 is a detail elevation showing two of the ribbon carrying arms depressed and the platen engagement for line spacing movement of the ribbons completed.

1 is the platen of a typewriter which is mounted on the usual carriage, not shown herein; 2 is the usual line spacing ratchet of the platen; 3 is the platen shaft, with its knob 4, and 5 indicates one of the bearings of the platen shaft on the platen carriage- Fig. 1.

Upon the platen'carriage above the platen shaft bearing 5 is secureda bracket 6. There are two of these brackets, one beyond each end of the platen, only one being here shown, namely the one at the right hand end.

Mounted for rotation in the right hand bracket is a shaft 7, a similar shaft, not shown, being mounted in the left hand bracket. Each of these shafts carries a crank 8, the right hand one alone being shown, and said shaft has also a lever 9 by which it is turned on its axis.

In the free extremity of each crank 8 is fitted a centerin shaft 10, the right hand one alone being s own. This shaft is mounted for rotation and carries a knob 11 for turning it.

Between the pair of centering shafts 10 are fitted a plurality of nested sleeves 12, each sleeve being adapted for independent rotation about a common axis.

Each sleeve carries at each end an arm 13, the arms at the right hand end being here shown. Said arms are in superposed nested relation and each is provided with a laterally projecting stud 14.

arried by and between the free extremities of each pair of arms is a .manifolding ribbon 15, indicated by the dotted lines in F ig. l.

The position of the nested sleeves, and their ribbon-carrying arms, with relation to th platen is such that when the arms are elevated the ribbons are out of use and when the arms are depressed, turning with their sleeves about the centering shafts 10 as an axis, the ribbons are carried down to a posi-v tion in front of the platen, but above the line oftype impact, as shown by the dotted lines in Fig. 8. Then by depressing the lever 9, the crank shafts 7 will carry the ribbons down to functional position in the line of type impact, as shown in Fig. 9.

- tering shaft a resilient spiral crank memher or spring 16 coiled about the shaft at right angles to its axis, said spring having at its free end a pick up lug 17, in the path of rotation of which the laterally projecting studs 14 of the ribbon carrying arms lie. When' the spiral crank member or spring 16 is condensed to its closed in limit, its lug 17 will lie behind the stud of the first or innermost carrying arm when said arm is elevated, as seen in Fig. 5. Then, if the centering shaft 10 be turned, the lug 17 of the coiled crank member 16 will by pressure on the first stud 14 carry the innermost arm 13 down, to place its ribbon in its first position above the line of type impactFig. 5. When this position is reached and the ribbon lies against the platen, and is stopped thereby, continued rotation of the shaft 10 in the same direction will cause the lug 17 ofthe coiled crank member 16 to slip past said stud, and said crank member will, due to its T resiliency, spring outwardly, but its body coil coming in contact with the stud ll: of the second arm 13, which is still elevated, the

outward movement of said crank member is limited.

The crank member will then ride on. said second stud, until its lug 17 comes to and picks up said second stud 14, Fig. where upon continued rotation will serve to carry the second arm 13 down to place its ribbon in its first position. In like manner the second stud will be slipped and the crank member again springing out will, in. due course, pick up and operate the third ribbon carrying arm-Fig. 4. The rotation of the crank member nee continue no further, as all the arms are depressed. Now, assuming that the shaft 10 be locked, as will presently be described, against a reversal of its rotation, if then the arms be manually swung up to elevated position, the last stud ll pressing on the pick-up, lug of the crank member, will tend to recondense said member, so that the lug will slip said stud, and

' striking the middle stud will slip it also, and

by the time the arms have reached their elevated position, the crank member will be recondensed to its initial position with its pick-up lug bearing behind the first stud; and thereupon the operation may be repeated. Thus the manifolding ribbons, one or more of them, may be thrown into first position, as required. i

From this first position, the r1bbons, or such of them as may be so placed are moved to the second or functional position in the line of type impact, as seenin Fig. 9, by de pressing the lever 9 which effects a movement about the shafts 7 as axes. This second operation, however, is made to serve,

through suitable means, the further desirable result of varying, at each line spacing movement of the platen, the position of the manifolding ribbons with respect to their width. when in functional position, so that they may be used over their entire width and thus prolong their useful life.

Mounted upon the bracket 6Figs. 5 and 8, is a short shaft 18 which'carries a pinion 19, adapted to engage with the ratchet 2 of the platen 1, Fig. 8. The shaft 18 has a crank 20, to the free end of which is pivoted a link 21, controlled by a spring 22, and carrying inits free end a lug 23Fig. 8.

Secured upon the shaft 7 is a quadrant 24 upon which the lug 23 of the link 21 rides,

said lug drops when the two are made to register, as seen in Fig. 9. Carried by the crank 8 is a pawl 26Fig. 6, controlled by a spring 27 said pawl being adapted to engage with a ratchet 28 on the centering shaft 10--Figs. 6 and 8. When the centering shaft 10 is turned to eifectthe first movement of the ribbon carrying arms as heretofore described, the ratchet 28 slips the pawl 26 and thus said movement is not interfered with. But the pawl 26 and ratchet 28 form a lock which prevents the shaft 10 from rotating in a reverse direction. lVhen the second movement takes place, by the turning of the shaft 7, by means of the lever 9, the quadrant 24 is moved forward until its notch 25 reaches the lug 23 of the link 21, whereupon said lug drops into the notch-Fig. 9.

Then when the platen is turned for line spacing, its ratchet 2 engaging the pinion 19 will effect a slight rotation of the shaft 18. This movement of the shaft, through its crank 20 and link 21 will pull back the quadrant 2-l slightly, and this movement of the quadrant, by turning the shaft 7 will vary the position of the ribbons with respect to their width, when in the line of type impact.

The locking of the shaft 10 by the pawl 26 and ratchet 28, against reverse movement, prevents the spiral spring crank member 16 from any tendency to'unwind itself and get into false positions between the studs 14.

29 is a safety stop guide carried by a standard 30 from the bracket 6. This stop guide. as seen in Fig. 8, is so placed with relation to the arcuate path of the arms about the shaft 10 as an axis, that the studs 14 of said,

menses cepted by the guide 29 and the ribbons cannot be moved into ition.

A brief resume of the operation of the attachment may conduce to a better understanding.

The normal, out of the way position of the parts is best seen in Fig. 8. To use the ribbons, the shaft 10 is turned to the left, and the selective spring member 16, engaging its end 17 successively behind the studs 14: of the carrying arms will move said arms and their ribbons, with the sleeves as axes,

down to first position as shown by the dotted lines in Fig. 8. Then lever 9 is depressed, whereby the shaft 7 with its crank 8 turning, will carry the arms down to their functional position as shown in Fig. 9.

When the need for the ribbons is past, the arms are returned by hand, and the selective spring member 16 is by this movement restored to its normal position.

When the ribbons are in use in their functional position in the line of type impact, they will be slightly moved widthwise at each line spacing of the platen. lit will also be seen that one or more of the ribbons may be placed in functional position, as required.

I claim:

1. A manifolding attachment for typewriters comprising a plurality of independently rotatable nested members mounted on the platen carriage of the machine parallel with the platen; an arm carried at each end of each of said members;,a manifolding member carried by and between each pair of arms; a rotatable shaft lying in the axis of movement of said nested members; a spring carried by and spirally coiled about said shaft in a plane at an angle to its axis, said spring havin a pick-up lug on the free extremity; an studs on the arms lying in the path of rotation of the pick-up lug.

2. A. manifolding attachment for typewriters comprising a plurality of independently rotatable nested members mounted on the platen carriage of the machine parallelwith the platen; an arm carried at each end of ,each of said members; a manifolding member carried by and between each pair of arms; a rotatable shaft lying in the axis of movement of said nested members; a spring carried by and spirally coiled about said shaft in a plane at an angle to its axis, sald spring having a pick-up lug on the free extremity; studs on the arms lying in the path of rotation of the pick-up lug; and means for locking said shaft against reverse rotation.

3. A manifolding attachment for typewriters comprising a pair of spaced-brackets mounted on the platen carriage of the machine; a crank shaft mounted in each of said brackets; a rotatable member carried by the cranks of said shafts, parallel with the platen; spaced arms carried by said member; a manifolding member carried by and between said arms; means for turnin said rotatable member to move its arms an manifolding member forwardly to a position in front of the platen above the line of type impact; means for turning said crank shafts to carry said arms and manifolding member down to position in the line of type impact; a notched quadrant carried by one of said crank shafts; a second crank shaft mounted in one of the brackets; a pinion on said second crank shaft adapted to engage the ratchet of the platen; and a link carried by the crank of said second crank shaft, said link having a lug adapted to engage the notched plate of the first crank shaft when the manifolding members are in the line of type impact.

4:. A manifolding attachment for typewriters comprising a pair of spaced brackets mounted on the platen carriage of the machine; a crank-shaft mounted in each of said brackets; a centering shaft mounted in the cranks of said crank-shafts; a plurality of independently nested members mounted beat each end of each of said nested members;

a manifolding member carried by and between each pair of arms; a spring carried by one of said centerin shafts, coiled spirally thereabout in a p ane at an angle to its axis, said spring having a pick up lug at its free extremity; studs on the arms lying in the path of rotation of the pick up lug, whereby each of said arms may be moved to carry its manifolding member to position in front of the platen above the line of type impact; means for rotating said centering shaft; means for rotating one of said crank shafts to carry the manifoldin ribbons fully down to position in the line 0 type impact; a notched quadrant carried by said crankshaft; a second crank-shaft mounted in one of the brackets; a pinion on said second crank-shaft adapted to engage the ratchet of the platen; a link carried by the crankshaft, said link having a lug adapted to engage the notched quadrant of the first crankshaft when the manifolding members are in the line of type impact; a pawl carried MALCOLM L. COSSITT.

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