US415533A - Type-writing machine - Google Patents

Description

(No Model.) 2 `sheets-sheen 1.

G. H. LAS'AR. TYPE WRITING MACHINE.

No. 415,533. Patented Nov. 19, 1889.

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G. H. ,LASAR IYPII WRITING MACHINE.

110.415,583. Patented Nov. 19, 1889.

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UNITED STATES PATENT OFFICE.

GODFREY H. LASAR, OF ST. LOUIS, MISSOURI.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 415,533, dated November 19, 1889.

Application led March 28, 1887. Serial No. 232,733. (No model.)

.T0 all whom it may concern.'

Bc it known that I, GODFREY H. LASAR, of the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Type-Vriting Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specication, and in Which- Figure I is a front elevation showing part of the frame of a type-writer and the ribbonholder to which my invention relates. Fig. II is a rear view of same. Fig. III is a side elevation of the ribbon-holder, showing part of the frame of the machine and part of the carriage in vertical section. Fig. IV is a top view showing part of the roller or platen of the carriage. Fig. V is a section taken on line V V, Fig. III. VFig. VI is a view of the movable pawl, showing part of one of the ratchet-Wheels in section. Fig. VII is a sec-. tion through the movable and fixed pawls, showing part of one of the ratchet-wheels in side elevation. Fig. VIII is a section taken on line VII VII, Fig. V.

My invention relates to ihe ribbon-holder for type-writers; and it consists in features of novelty hereinafter fully described, and pointed out in the claims.

Referring to the drawings, l represents part of the frame of a type-writer; 2, the carriage supported on rails 3, 4, the platen or roller of the carriage, and 5 the paper-guide of the carriage.

The ribbon-holder has a main frame 6, provided with a projection 7, having dovet-ail connection with lugs 8 on the main frame I of the carriage. This connection serves to hold the frame 6 to the frame l, but at the same time allows the frame 6 to move horizontally with relation io the frame l, so that the ribbon which is carried by the holder may be adjusted back and forth, so that the entire surface may be utilized in printing. The frame G is moved to thus adjust the ribbon by means of a rod 9, screwing into the block 7, as shown in Fig. II, and connected to the frame 1 by passing through a lug 10 on the frame and heldfrom movement in the said lug by means of fixed collars Il. It will thus be seen that as the screw-rod 9 is turned by a knob l2, with which it is provided for this purpose, the projection 7 will be made to slide through the lugs 8 and carry with it the ribbon-holder. The ribbon is thus adj usted hori- Zontally over and longitudinally of the length 1 of the platen or roller 4.

On the upper end of the frame 6 is a head 13, to the opposite ends of which are pivoted at I4. levers l5, to the upper ends of which is pivoted at 16 a plate 17, that has a forwardlyextending arm 18, which, when in using position, projects over the platen or roller 4., as shown in Figs. III aud IV. On the forward end of the arm 18 is a cross-bar or head 19, having a notch or groove 2O to receive the ribbon 2l, which passes around spools 22, supported on journals 3, projecting from the frame 6, beneath the head I3. Each journal has a spring 24. for holding the spool in place, (see Fig.V,) and is described, shown, and claimed in my application, Serial No. 244,759, filed .I uly 19, 1887. The spool-securing device on the inner side of each spool is an enlargement 25, carrying a ratchet-wheel 26 and made to turn with the spool 4by means of a projection or lug 27 X entering the hub of the spool, as shown in Fig. V. Inside the ratchet-t wheels 26 the journals have enlargements 27 that prevent the inward movement of the ratchet-wheels and the spools, while the springs 24- prevent the outward movement. The ribbon passes from one of these spools around the head 19 of the arm 1S, passing through the notch or groove 20, as shown in Fig. IV, and from there back to the other spool, and is held between the spools and the head I9 by means of projections 28 on the plate I7, which are recessed, as shown in Fig. IV, to receive and hold them open. The ribbon is thus held over and in close proximity.

to the platen or roller '4, and when it is desired to see a letter or word just written the ribbon may be removed horizontally from over the platen transversely of the latter by throwing the plate and its parts back into the position shown in dotted lines, Fig. III, which is done by means of a key 29, pivoted to an extension 30 on the inner side of the frame G at 8], and connected by means of a rod 32 to a crank 33 of the outer lever l5. Thus it will be understood that when the key IOO 29 is depressed the plate 17, carrying` with ity the ribbon, will be moved back from the position shown in full lines to the position shown in dotted lines, Fig. III, and as soon as the pressure is removed the plate will be thrown back to its normal position again by means of a spring 34, surrounding the rod 32 between a lug 35 on the frame 6, and an adjustable nut 36 on the rod 32. The nut 36 is made adjustable for the purpose of increas-v ing or diminishing the pressure of the spring 34.

The head 19 of the arm 18 is preferably provided with rollers 37-one at each end which bear upon and hold the paper down upon the platen or roller, and the head is also preferably provided with shoes 38-one at each end-Which will guide the paper under the head in cases where the paper is inserted in the carriage to one side of the head.

To cause the ribbon to be wound from one spool onto the other, apawl 39, havingahead 40, that engages one or the other of the ratchet-wheels 26, is connected at 41 to a lever 42, pivoted at 43 to the frame 6, and which is connected by a rod 44, or by other suitable means, to a bar 45, that extends beneath all Y of the levers of the type-writer, so that each v6 of the ribbon-holder.

time a lever is operated to produce a letter, figure, or character the pawl 39 is operated, and turns the ratchet-wheel 26 and its spool, with which it is engaged, the distance of one notch, and thus the ribbon is adjusted each time a 1et-ter,flgure, or character is produced. The pawl is held into engagement with the ratchet-wheels in ahorizontal frame bymeans of a spring 46, connecting a block 47, through which the pawl passes, to the frame 6 of the ribbon-holder. The block 47, as Ashown in Fig. V, has a V-shaped end or edge 48, that engages a`correspondingly-shaped lug or cam 49 with an arm 50 projecting from the frame Vhen the block 47 is inside of this cam 49, as shown in Fig. V, it engages one of the ratchet-wheels, and by shifting the block to the other side of the cam the head of the pawl is made to engage the other ratchet-Wheel, and thus the movement of the ribbon is reversed. The block is thus moved back and forth by a rod 51 connected to it, and which passes back through a proj ection 52 on the frame 1, as shown in Figs. I and V. The rod has a head 53, by which it is moved by simply pulling or pushing upon it, and it is preferably connected to the block 47 by means of a flattened part 54 thereon, which enters a circular opening 55 in the block through a slot 56, as shown in Fig. VIII. The flattened portion 54 is turned in line with the slot to enter the latter, and then when the rod is turned the fiatportion will cross the slot and the connection between the rod and block made perfect unt-il the rod is turned to bring the flat portion 54 again in line with the slot 56, and then the rod can be quickly and easily disconnected from the block. The spring 46 has sufficient pressure to hold the block 47 on either side of the cam 49, but at the same time has sufficient elasticity to allow the block to slide outward to pass the cam.

To prevent a retrograde movement of the ratchet-wheels 26 and theirspools, I secure a pawl 60, having a head 61, to thearm 30, as shown at 62, and this pawl is moved back and forth with the pawl 39, so that its head will engage either ratchet wheel by passing through the block 47, as shown in Fig. V. This arrangement provides a simple means of throwing the ratchet-pawls into engagement with either wheel, and one which is not liable to be misoperated or liable to get out of order. The block 47 is stopped from moving too far 011 each side of the cam49 by means Aof a projection upon the block 50. (See Fig. V.) Theframe 6 has an upward projection 6X, against which the lever 15 comes, respectively, as shown inFig. III, and

stops the movement of the plate 17, the upper end of this projection being inclined on either side, as shown.

71 represents a spring located between the pawl 60 and pawl 39 for the purpose of holding the pawl 60 into engagement with the ratchet-Wheels.'

I claim as my invention- 1. In a type-writer, the combination, with a platen, of a ribbon-supporting plate having an arm extending above the platen, supporting-frame, levers, and operating-lever connect-ed to the outer lever.

2. In a type-writer, the combination of the frame 6, having a head 13, levers 15, crank 33 on one of the levers, key 29, to which the crank is connected by a spring-rod, arm 18 on the upper ends of the levers, and spools for supporting the ribbon, which passes over the forward end of the said arm, substantially as and for the purpose set forth.

3. The combination, with a platen, of a ribbon-supporting arm extending transversely of the platen, havinga support by which it is sustained on the latter.

4. The combination, with a platen, of the.

frame, the levers hinged to the frame, the projecting arm, and means, substantially as described, for supporting the arm on the platen.

5.I In a type-writer, the combination of the frame 6, arm 18, supported on the frame, head 19 on the end of the arm, rollers 37, which TOO IIO

are secured to the head, and spools by which l frame G, the ribbon-spools and ratchet-Wheels,

the paWl 39, block 47, spring 46, cam 49, and rod 51, arranged and operating substantially as and for the purpose set forth.

10. In a type-Writer, in combination With the spools and ratchet-Wheels, rod, lever 42, pawl 39, head on the pawl, block 47, having a V-shaped end or edge, spring 46, cam 49, rod 51, and block 50, having arms 70, substantially as and for the purpose set forth.

11. In a type-Writer, in combination With the spools and ratchet-Wheels, pawls 39 60,

having heads 40 and G1, block 47, spring 46, cam 49, rod 51, and means for operating the pawl 39, substantially as and for the purpose set forth.

12. The combination, with two ribbonspools and ratchets for rotating the same, of a pivoted pawl having a head, and ablock arranged and operating to throw the paWl into connection with either of the ratchets, substantially as described.

13. The combination, With tWo ribbonspools and ratchets for rotating the same, of a pivoted paWl having a head, mechanism for operating the paWl, and a block arranged and operating to throw the pawl into connection With either of the ratchets, substantially as described.

14. The Combination, With two ribbonspools and ratchets for rotating the saine, of a pivoted pawl having a head, the lever, the bar, and a block arranged and operating to throw the paWl into connection with either of 45 the ratchet-s, substantially as described.

GODFREY "H. LASAR. In presence of- GEO. H. KNIGHT, JOSEPH WAHLE.

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