US1902007A

US1902007A - Printing ribbon

Info

Publication number: US1902007A
Application number: US233979A
Authority: US
Inventors: George R Wood
Original assignee: International Business Machines Corp
Current assignee: International Business Machines Corp
Priority date: 1927-09-15
Filing date: 1927-11-17
Publication date: 1933-03-21
Anticipated expiration: 1950-03-21

Description

March 21, 1933..Y HV1/OD 1,902,007

PRINTING RIBBON Filed Nov. 17, 1927 GeorgefR. [Dood @3112* his @bio/w1 j j Patented Mar. 21, 1933 UNITED STATES PATENT ol-FlcIf:g

GEORGE R. woon, or TORONTO, ONTARIO, CANADA. vAssIaNoR To INTERNATIONAL Y BUSINESS MACHINES CORPORATION or NEW YORK, N. y., A CORPORATION or'` Nniw YORK i PRINTING RIBBON `Application med November 17, 1927, Serial No. 233,979, and in'Canada September-15, 1927.

This invention relates to new and useful shown. The faces of said wheels have nu-` improvements 1n inkmg ribbons and particumerals formed thereon and in the case shown larly to inking ribbons used in time clocks l2, indicates the hourof the day `and 13 the and the like, andthe object of the invention minutes. Extending upwardlyvv from ythe is to provide a new 'and improved attachment frame are the spindles 15 `which are so posi- 55 for the ribbon which can be easily and ecotioned that they guide the ribbon in its pasnomically installed at any desired point to sage between the winding rollers 16. These' operate the ribbon reversing mechanism. winding rollers are each mounted on and Another object is to provide an attachment adapted'to rotate with the spindles 17, which 1 of the class stated which will form an anchorproject upwardly lon the frame.` These 00 in means for a printing ribbon. spindles have each secured thereto a toothed n my invention, I provide a slotted sleeve wheel 18, which are driven by toothed pinof thinllexible or springmaterial into which ions 19, secured to the ends of a rotatably the printing ribbon is inserted and to hold mounted shaft 20.l This shaft is slidably l5 or anchor the ribbon in place apiece of wood mounted on the frame, and is so operated 65 or holder is pressed. into the sleeve clamping that when the toothed pinionr on one end is the ribbon between the inner wall of the engaging with its adjacent toothed wheel the sleeve and the outer wall of the holder or pinion at the other end is out of engagement piece of wood. Two such vsleeves are fitted with the 'adjacent toothed wheel and vicej 2 on each end of the ribbon and spaced from versa. The following mechanism is used for 70 one another, one acting as an anchoring moving the shaft to reverse'the winding of.l means and the other as a reversing means for the ribbon, that isto wind it from one windl the ribbon feeding mechanism. The anchoring roller onto another. The reversing lever ing sleeve fits into a circular groove'in each 21 consists of a triple armed lever pvotally ribbon spool, the groove having aslot extend- -f mounted on `a pin 22 ,secured to the frame. 75 ing towards the outer face of the cylinder. `A The vtwo

lower arms

23 and 24 engage with slotted recess is formed in .the face of the the faces of the

discs

25 and 26 respectively, cylinder to receive the reversing means, said these discs being secured to and spaced from slot being formed in proximity to the circuone another on the shaft 20 `and near the jar gI-Ow Y centre thereof. An upwardly extending arm 80 In the drawing which illustrates one form 27 engages with aslot 28 through the medium of my invention; f of'an outwardly' extending pin 27a. The slo Fig. 1 isa perspective view of the ribbonv is .formed in a pivotally mounted lever 29' in position on a time clock. having three

arms

30, 31 and 32, each formed Flg. 2 is a perspective view of the ribbon at anangle to one another and pivoting about 85 feeding cylinder showing the ribbon anchorthe pin 33 secured to the frame. The central in and reversing attachment. arm 30 has the slot formed therein.` The Fig. 3 is a `developed perspective elevation outer arms extend outwardly from said centrey of the end of the ribbon. arm and are provided with guide rods 34 one 4o ig. iA is a sectional plan of the ribbon reon each side of the ribbon and in proximity 9 y versing attachment. f thereto. These guide rods are preferably V Fig. 5 is a section plan of ribbon winding positioned between the spindles 15 and the roller or feeding mechanism. winding rollers for the purpose hereinafter Fig. 6 is a side elevation of a typical ribstated. A tension rspring 35 is connected in bon feed reversing mechanism. any suitable manner to the end of the arm 95 Referring more particularly to the draw- 27 and to the lever 29 near the pivoting. ing, 11 designates an inking or printing ribcentre thereof and in such amanner that it bon which passes over the faces of the type will ktend to lpull the reversing vlever from wheels 12 and 13 rotatably mounted' in a the'dead centre position, either to one side or frame 14, and driven from a source not the other, according to its position. The 100 present in use wherein slot on the face of the roller.

above mechanism may be operated by my improvement which lies in the attachment secured to `the ribbon for moving the aforementioned levers. The attachment may also be used as an anchoring means as hereinafter illustrated. A detail of the attachment is shown very clearly in Figure 4 of the attached drawing and consists of a slotted sleeve 36 and a shaped holder 87. The holder is preferably circular in shape and fits into the sleeve with the ribbon between its outer surface and the inner surface of the sleeve. The ribbon passes down the slot when placinnr it in position. It will be readily seen that by pressing the free edges of the sleeve together or by pressing the edges of the slottogether, the ribbon is clampedbetween said edges, and the sleeve, holder and ribbon prevented from movement independent of one another. A similar sleeve and holder may be placed at each end of the ribbon to form an anchoring means for securing the ribbon to the winding roller. A hole 38 is drilled or otherwise formed in each of the winding rollers and a slot 39 is formed in the face of the rollers to allow the ribbon to pass therethrough. This construction forms a groove, the innermost portionl or that portion nearest the center of the roller boing of greater diameter than the Two such .holders and sleeves are iitted to each end of the ribbon, one at the extreme end to form an anchorpand the other spaced from said end and adapted to engage with the guide rods to reverse the movement of winding. The reversing sleeve and. holder fits into a slot 40 formed in theface of the winding roller, so that when said ribbon is wound around the rollerit will it closely against the face of the cylinder.

' In operation the ribbon with holders and sleeve attached thereto is secured to the winding roller by passing the sleeve through the holes 38 and allowing the` ribbon to pass through the slots. The ribbon is then wound around one of the rollers only and then attached to the spindles 17 in such a manner that they will rotate therewith. In winding itself` around the roller, the reversing sleeve and holder fits into the groove in the wall of the roller. In reversing, the sleeve spaced from one end engages with the guide rods 34, and vpresses against the lever 39, operating same causing the

lever arm

23 and 24 to contact with the discs to move the shaft 2O and the pinions into or out of engagement with their adjacent toothed wheels. Y

This attachment is easily and economically installed and is a decided improvement yover the attachments of the same nature at the sleeve is sewn to the ribbon and sometimes the ribbon is split and the sleeve attached to adjacent ends to form a continuous strip. The device herein described is quickly attached to any part of the ribbon without cutting or sewing and forms a very eliicient means for reversing the direction of travel of the ribbon or for anchoring same.

Having thus described my invention, what 1. An attachment for printing ribbons in time clocks and the like, comprising a printing ribbon, a pair of spaced cylindrical sleeves having slots formed 1n their walls, a pair of ribbon holders adapted to press the ribbon against the inner walls of the sleeves, one of said sleeves being positioned at the extreme end of the ribbon to form an anchoring means and the other sleeve being spaced from said end for operating a ribbon reversing gear, a winding roll for the ribbon, a groove in said roll to receive the cylindrical sleeve at the extreme end of the ribbon and a slot in proximity to said goovev adapted to receive the other sleeve and allow the ribbon to contact with the surface of the winding roll.

2. A ribbon mechanism comprising a spool rotatable to Wind a ribbon thereon, a sleeve, a holder for holding the end of the ribbon to the sleeve, said holder being removable to free the lribbon from the sleeve, said spool being provided adjacent its circumference with a slot of the shape of the sleeve to receive the latter after its attachment to the ribbon and a restricted narrow passage leading from the slot to the outside of the spool to receive the ribbon.

3. A ribbon mechanism comprising a spooly rotatable to wind a ribbon thereon, a slot formed in the spool to receive the end of the ribbon, a ribbon feed reversing projection on the ribbon spaced from said end and mounted on the side` of the ribbon contacting the spool, and another slot in the spool to receive said projection.

4. A ribbon mechanism comprising a spool rotatable to wind a ribbon thereon, a cylindrical sleeve formed with slotted wall, a round holder for insertion in said sleeve to frictionally hold the end of said ribbon to the sleeve, said spool being formed with a slot in the outer periphery the shape of said sleeve to loosely hold the latter, said ribbon extending from the slot in the sleeve through the slot in the spool.

5. A ribbon mechanism comprising a spool rotatable to wind a ribbon thereon, means for attaching one end of the ribbon to the spool, an adjustable projection for reversing ribbon feed carried by the ribbon at a distance from said end, said spool being shaped with a slot to receive the projection as the ribbon is wound on the spool. ,N

6. A ribbon mechanism comprising a spool rotatable to wind a vribbon theron, means for attaching one end of the ribbon to the spool, a cylindrical sleeve, a round holder for frictionally holding said sleeve to said ribbon so feed a slot to receive t-h said ribbon spool being shaped with e entire projection as the ribbon is wound on the s 001.

In testimony whereof nature.

hereto ufix my sig- GEORGE R. WOOD.