US945035A - Type-writing machine. - Google Patents

Description

E. A. GOODHUE. TYPE WRITING MACHINE. APPLICATION FILED AUG. 27, 1908.

Patented Jan. 4, 1910;

2 SHEETS-SHEET l M/I/E/VTOR I WITNESSES.

ATTORNEY.

E. A. GOODHUE.

TYPE WRITING MACHINE. APPLIQATION'FILED 13116.27, 1908.

945,035. A Patented Jan. 4, 1910.

{sums-SHEET 2.

INVENTOR.

WITNESSES.-

. M W 7 MTORNEY.

of Syracuse,

entrain sTAgins PATENT OFFICE- EDWARD A. GOODHUE, OF SYRACUSE, NEW YORK, .ASSIGNOR TO THE SMITHPREMIER TYPEWRITER COMPANY, OF SYRACUSE, NEVI YORK, A CORPORATION OF NEW YORK.

To'dll whom it may concern: 1

-Be it known that. I, EDWARD A. GoonHUE, citizen of the United States, and residentin the county of Onondaga and State of New York, have invented certain new and useful Improvements in TypelVriting Machines, of which the following is a specification.

My invention relates. to typewriting machines and particularly to the ribbon mech-v anism of such machines.

The principal object of the invention is to produce a ribbon spool of simple construction with meansior conveniently at taching the ribbon thereto, and devices co.-

' operatlng with such spool which will allow the spool to be readily removed from and reppla-cediin working position in-the machine.

- Tothe above and other ends my invention consists of certain features of construction and combinations and arrangements of parts all of whichw-ill befully set forth herein and particularly pointed out in the claims.

In the accompanying drawings, Figure l 25 is a back view. of a typewriter containing the present invention, parts being omitted and parts broken away and shown in section. Fig. 2 is a fore-and-aft vertical section of part of the mechanism. Fig. 3 is a fragiiientary View similar to Fig. 1 but showing the spool holdgr retracted and a spool removed, and showing some of the other parts in section andin different positions from those shown in Fig. 1. Figs-4, 5 and 6 are a face view, an edge view anda sectional View, respectively, of the ribbon spool. Fig. 7 is a face view of one of the flanges of said spool. Fig. 8 is an isometric view of a drum and, ribbon holding spring clamp. Fig. 9 is a face'view of the other flange of the spool; Fig. 10 isan enlarged view of the ribbon spool with one-of the flanges removed and illustrating'the manner in which the ribbon is secured to the drum.

My invention is'applicable to typewriting machines generally but; Iha-ve here shown it applied to a front-strike typewriter of the general sort shown in the application of Alexander T. Brown filed March 12, 1906, Serial N 0. 305,561. The main frame of this machine comprises side plates 1 connected together at the rear by a back plate 2, said side plates being prolonged upward to form .machine as shown in'Fig.

corner posts which support the top plate 3.

TYPE-WRITING MACHINE.

A paper carriage is mounted above said top plate and is adapted to be fed across the same in a usual or suitable ma'nnen- Said carriage is propelled by a springdrum and certain gears which are mounted in a frame work 4 that depends from the top plate 3. The mechanism mounted. in said frame 4 comprises a transverse horizontal shaft 5 posite direction is prevented by a collar 8.

The spool is, however, free to turn on its support 6 except when said spool is connected with said support and the shaft 5 by a driving device presently to be described. A second ribbon spool 10 is arranged coaxially with the spool 7, said spool 10 being journaled on a spring-pressed puppet or plunger 11 which is mounted in a bracket 12 depending from the-top plate 3. As. shown in Fig. 3 the bearing 11 consists of a collar mounted on the reduced end of a rod 13 where it is secured by riveting up the inner end of the rod. The bearing 11 and the rod 13 are mounted in a counter-bored hole 14 in the bracket 12, and a' spring 15, compressed between the part 11 and the bottom of the counter-bore, presses the bearing, 11 toward the end of the shaft 5. As shown in Fig. 3 the end of the hub 6 is formed ..with a shallow depression 16 which the end of the bearing 11 enters. The spool 10 when in position in the machine is held against motion axially by the hub 6 011 the one hand and on the other by a shoulder 17 ,on the bearing 11'. The motion of the. puppet- 2 under 'the impulse of the spring .15, is'limited by the hub of a nut 18 which is threaded onto the end o'f-the rod 13 and. which contacts with they bracket 12, thus pressure due to the spring preventing the 15 from coming on. the shaft5 and causing unnecessary friction.

When the two spools are mounted in the 1 they are arr ranged coaxially side by side.;- The iibbon Y is led from one spool o ver suitable guides to a ribbon vibrator at the front of the platen. and back over similar guides to the other spool. These guides and the vibrator may be similar to those shown in the application. of Alexander T. Brown above referred to.

In order to turn one or the other of the spools said spools have their adjacent flanges formed with ratchet teeth 20, Fig. 10, and said ratchet teeth are adapted to be engaged by a feed dog 21 which as here shown consists of a plate of metal mounted ina slot cut in the end of the shaft 5 and the collar 6. This dog 21 is in elfect a lever of the first order, being pivoted on a pin 22 passing through the shaft 5 and throughthe lever. The construction is suchv that if the lever is rocked one way to the position shown in Fig.

3 it engages the ratchet teeth 20 on the spools 7 and if it is rocked the other way on the pivot 22 it will engage the ratchet teeth on the spool 10; and the spool that is engaged by the clog will be driven positively with the shaft 5 to wind the ribbon thereon, and the other spool will be free to turn.. In order to retain the dog in either of these two 'positions said dog is formed on the end opposite its engaging end with a stud on which is jo'urnaled a grooved roller 23, and a pointed spring 24: has its pointed end in the groove of'the roller and v the tension of the spring is exerted toward the roller. The construction is such that when the dog is in either of its two positions the spring holds it in that position and when the dog is snapped to the other position the center of the roller passes the point of the spring and said spring presses the dog into'its new position and retains it there. The point of the spring extending in the groove of the roller prevents the roller from coming off of the stud on which it is journaled. In order to provide for shifting the dog by hand, a wire 26 is laid in a groove in the shaft 5 and the end of this wire is bent up as shown at 27 into a notch 28 in thedog 21. The construction is such that if this wire be moved endwise it will shift the dog about its pivot. The wire may be controlled in any suitable manner but as here shown its free end 29, Fig. 1, is bent out through a collar 30which is loosely mounted on the outer end of the shaft 5. By sliding this collar in or out the dog maybe shifted from one spool to the other.

The construction of the ribbon spools is shown in detail in Figs. 4 to 10 inclusive.

Each of these spools comprises a plain flange 32 and a toothed flange 33 and each of these flanges is preferably slightly dished at its edge as shown at 34. These flanges are stamped out of sheet metal and the dishing referred to serves to guide the ribbon more readily into the spools. The ratchet teeth 20 in the flange 33 are formed by stamping out parts of the metal as will be clearly unthe. holes 38.

-spoal O can then be removed instantly by derstood from the drawing. The metal is cut through on three sides of a rectangle and bent on the fourth side.

The drum 35 of the spool consists of a strip of sheet metal. bent into cylindrical form but the ends notquite coming together, thus leaving a slot 36 in the spool. The drum has ears 37 projecting therefrom. through holes 38 in the flanges 32 and 33 and these ears are riveted up, thus securing the three parts of the spool together. The clamp for securing the ribbon in place consists of a spring 40 of flat metal bent into cylindrical form and inserted loosely into the hub or drum 35. One end of this spring v is bent off abruptly as shown in Fig. 10 at 4'1 and -the other end is bent off obliquely as shown at 42, the edge of the oblique part 42 being pressed by the tension of the spring against the face of the abrupt part 4.1. The slit in this spring comes opposite the slot 313 in the drum. The spring is secured in this position by means of lugs 4:3 which project into openings 44: in the flanges 32 and 33, each of said openings as shown in the present instance consisting of a branch of one of The drum 35 serves as a cover or housing for the clamp 40. The manner of-securing the ribbon to this spool is illustrated in Fig. 10. The end of the ribbon 4:5 is folded back and any thin'tool 46 may be v used to insert the fold of the ribbon into the slot 36 and to force it between the parts il and 42 of the spring 40, thus forcing the two ends of the spring apart. XV hen the tool is withdrawn the edge of the part 42 is pressed by spring pressure against the face of the part 41, thr? clamping the ribbon in place with sufficient force to retain it there for the purpose of feeding the ribbon. The ribbon can, however, be detached at any time by pulling forcibly on it and forcing it out of the clamp. It will be seen that this ribbon spool. is extremely'simple in construction, the whole consisting merely of four 1 pieces of sheet metal. It will also be seen that the means for attaching the ribbon to the spool is very convenient as the end of the ribbon can be fastened in place, practically instantaneously. It will also be seen that it is very convenient to change the rib-' bon on the machine. In order to do this the entire ribbon is wound on to the spool 10 and its end detached from the spool 7. The

lli?) simply withdrawing the plunger hearing by taking hold of the nut 18 which is formed with a milled head for the purpose. and a new spool can be instantly inserted. The new ribbon will then be threaded through the machine and its free end secured to the spool 7.

It will be noted that the spool 7 r in the machine and that the pool f" tachable. These spools are so inc-r .Ll

einains is deiyg llit;

spool and the operation of putting the new ribbon into the machine is thus greatly sim-i plified as the ribbon when purchased is already on the spool and the spool can'be inserted instantly into the machine. ,Where the operator has several difi'erent kinds of ribbons each ribbon can be on its own spool and any one of them can be machine at: any time.

In order to provide-for an automatic reversal of the ribbon feed. when one of the spools is nearly exhausted certain cam devices are provided which are mounted on a frame consisting of'a piece of sheet metal which is secured by rivets 51 to the frame 4:

.in front of and below the center of the ribbon spools. The frame 50 extends across both spools and has ears 52 bent up thereform in which ears there is mounted apivot' rod 53. A smalLyoke frame 54: is mounted on said rod 53 opposite the ribbon spool'lt) and said yoke-frame comprises a flat arm 55 which is adapted to be pressed upward 25'ag'ainst the ribbonthat is on the spool 10,

the arm at this time lying between the flanges of the spool. 'lhe yoke-frame is turned to press this arm upward in the manner indicated by nihans of a spring 56 coiled about the rod 53 and connected at one "end to the yoke-f 'ame'54 and at the other end to the frame 50. The yoke-frame 54 also has an arm 57 situated between the spools 7 and 10 and having at its free end a triangular piece 58 bent off therefrom, the inclined edge of this triangular piece being directed toward the rear of the machine and constituting a cam. NVhen the-ribbon is so far exhausted from the spool 10 that this cam is raised into the path of the roller 23 said roller engages the cam which forces the rolleraway from the spool 10 and forces the opposite end of the dog 21 toward the spool 10 and into engagement with the ratchet teeth 20 on said spool. A similar yoket'ranle 60 is similarly mounted 011 the rod 53 opposite the spool 7 and iscontrolled by a spring 61 similar to the spring 56. This yoke-frame comprises a follower plate 62 vwhich is adapted to be pressed by the spring (31 against the ribbon on the spool 7. The

yoke frame 60 also has an arm 63 terminating in a cam 64 similar to-the cam 58 but oppositely directed so that when the cam 64 comes into the path of the roller 23 it will shift the dog 21 into ei'igagement with the spool 7. it will be noted that the arm 63 is made a little longer than he arm 57 so as to avoid interference between the two cams 5S and. 64. v

The follower arm 55 is prolonged as shown in Fig. 2 toward the rear of the machine so that this cam can be more conveniently taken hold of by the hand of the operator. This prolongation also prevents put into the the follower from getting in front of the spool shaft when the removable spool is inserted. When the spool 10 is being removed from or inserted in the machine the arm 55 is depressed beyond any position that it would ever be moved to by the ribbon when the spool is in position. \Vhen the spool is being removed from the machine it is, of course, essential that it be entirely unwound from the spool 7. In order to prevent the cam 64' from throwing the dog into engagement with the spool 7 at this time and thus possibly preventing the complete unwinding of the ribbon from that spool, I- have provided the arm 57 with a bracket 65 which as best shown in Fig. 3 extends overthe arm 63 of. the other yoke-frame. The position of this arm 5 is such that when both spools are in the machine said arm or bracket does not interfere with the movement of the arm 63 nor with the operation of any of the other parts; but when the arms 55 and57 are depressed to a greater extent by the removal of position sufficiently low to prevent the arm and cam 64 from rising high enough to engage the roller 23. By this device the dog 21' is prevented from being thrown into en gagement with tlye spool 7 when the spool 10 is removed and the operator is free to draw the ribbon entirely off from said spool 7.

Various changes may be made without departing from the spirit and scope of my invention.

lVhat I claim as new and desire to secure by Letters Patent, is

. 1. A ribbon spool for typewriting machines, comprising a hollow drum or hub having a slot therein, and aclamp for the ribbon mounted within said hollow drum, v a

said clamp having a pair of jaws springpressed together and situated just within said slot, so that the ribbon can be pushed through said slot and between said jaws.

2. A ribbon spool for typewriting machines comprising a hollow drum or hub having a slot therein and a clamp for the ribbon mounted within said drum and operative independently of said drum to clamp the ribbon.

3.1L ribbon spool-for typewriting machines comprising two flanges, and a drum formedof a strip of cylindrical form and having a slot left between the ends of the stripg and a clamp for the ribbon mounted within said drum, said clamp consisting of a spring having a cylindrical form and having its two ends pressed together by its resiliency and adapted to receive the ribbon between said two ends.

4. In a typewriting machine, the combi nation with a ribbon spool having a drum. with a slot therein, of a clamp mounted within said drum for securing the end of LOO the ribbon to the spool, said clamp consisting of a spring having a cylindrical form and having its two ends pressed together by its resiliency and adapted to receive the ribbon between said two ends, and having lugs projecting therefron. into openings in the flanges of the spool.

In a typewriting machine, the combination with a ribbon spool, of a clamp mounted on said spool for securing the end of the ribbon to the spool, said clamp consisting of a spring having a cylindrical form and having its two ends bent inward so as to form an angle with each other and pressed together by vits resilency and adapted to receive the ribbon between said two ends. l

6. In a typewriting machine, the combination of a support, a ribbon spool mounted on said support and comprising flanges and a drum, and a clamp for the end of the ribbon comprising a spring mountedwithin said drum and surrounding said support and operative independently of said drum to clamp the ribbon.. 7. In a typewriting machine, the combination of a ribbon spool, a spring-pressed puppet or plunger on which said spool is mounted and means for withdrawing said puppet or plunger from the spool to-remove said spool from the machine.

8. In a typewriting machine, the combination of two ribbon spools arranged side by side, a support for one of said spools, a

puppet or plunger for supporting the other spool and means for withdrawing said puppet or plunger to remove the spool thereon from the machine.

9. In a typewriting machi'ne, the combination of two ribbon spools arranged side by side, a driving shaft passing through one of said spools, a puppet or plunger for supporting the other spool, and means for withdrawing said puppet or plunger to remove the spool thereon from the machine.

10. In a typewriting machine, the combination of two ribbon spools arranged side by side, two supports for said spools, means for withdrawing one of said supports endwise to remove one of the spools from the machine, and means for preventing said support from being withdrawn entirely from the machine:

. 11. In a typewriting machine, the combination of two ribbon spools, means for rotating one or the other of said spools to feed the ribbon, means for automatically revers:

ing the direction of ribbon feed, and means for preventing the operation of said automatic reversing means when it is desired to unwind the ribbon completely .from one of the spools.

12. In a typewriting machine, the combination of two ribbon spools, ,driving means for said spools, an automatic reversing device for said driving means comprising two followers spring pressed against the ribbon on the spools, and means whereby one of said followers when moved to an abnormal position prevents the operation of the other.

13. In a ribbon spool, the combination of a clamp for connecting a ribbon to the spool, and a coveror housing for the clamp, said clamp being independent of said housing.

Signed at Syracuse, in the county of Onondaga and State of NewYork, this 21st day of August A. D- 1908. 4 v

' EDWARD A. GOODHUE.

Witnesses .E. L'. SNYDER, E. A. Soon.

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