US1148251A - Carriage-feeding spring-barrel for type-writing machines. - Google Patents

Description

L. C. MYERS. CARRIAGE FEEDLNG SPRING BARREL FOR TYPE WRITING MACHINES.

APPLICATION FILED MAR-31,19l1- Patented July 27, 1915.

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LEWIS 1c. MYER OIF BROOKLYN, NEW'XQRK, assIGNon, BY MESNE ASSIGNMENTS, TO

-ROYAL'myrnwnrrn'n COMPANY, rive, orivnw YORK, N. Y., A CORPORATION or NEW roan.

"CARRIAGE-FEEDINGSPRI1\TG- BARREL FOR TYPE-WRITING MACHINES.

Original application filed June 12, 1909, Serial No. 501,693.

To all whom it may concern .Be it known that I, Lnwrs C. MYERS, a citizen of the United States of America, residing in the borough of Brooklyn, county of Kings, and State of New York, have invented a certain new and useful Improvement in Carriage-Feeding SpringBarrels for Type-Writing Machines, of which the following is a specification.

This invention relates to the carriage feeding spring barrel o f-a typewriting machine and the application is a division of my application Ser. No. 501693 filed June 12, 1909.

The purpose of the invention herein described is to provide ball bearings and also a simple and efiective construction by which the barrel and its carrying shaft may readily be assembled.

In the accompanying drawings: Figure 1 is a side elevation partly in section of so much ofthe apparatus as is thought necessary to illustrate the invention. Figs. 2 and 3 are respectively a front elevation and transverse section through a spring barrel of modified construction as compared with what is shown in Fig. 1. Fig. 4c is a detail view partly in section showing a spring barrel shaft such as is employed in the construction of Figs. 2 and 3; and Fig. 5 is a plan or front elevation of a spring barrel such as shown in Fig. 3 with the cover plate removed. Fig. 6 is an enlarged sectional view showing details of construction of the form of spring barrel shaft used in the construction shown in Fig. 1. Fig. 7 is a View similar to Fig. 3 showing merely that the spring barrel shaft rod fitted in the spring barrel shaft sleeve may be square in cross section.

The spring barrel 7 is mounted (Fig. 1) to rotate upon a shaft composed of a plurality of parts indicated in detail in Fig. 6, that is to say there is a shaft 8 carrying at one end a worm gear 10 and reduced in diameter at the other end as at 8. Over the shaft fits a sleeve 9 having an enlarged hub 9 carrying on its periphery a hook 9 for attachment to the hub of the inner end of the motor spring. The sleeve 9 has a part 9 of reduced diameter threaded at its end. The shoulder formed at the junction of the part 9 and enlargement 9 is beveled as at 26. There is a tapered opening in the Specification of LettersPatent.

Patented July 27, 1915.

Divided and this application filed March 81,

Serial No. 618,123.

'bevel end of a collar 29 fitting over the reduced part 9 of the sleeve and secured there to by a set screw 29 The reduced part 8 of the shaft is flattened on one side and the end of the clamp screw 29 passing through the reduced part 9 of the sleeve, impinges against the flat surface. This prevents rota tion of the sleeve on the part 8 of the shaft. On the threaded end marked 30 of the reduced part 9 of the sleeve is screwed a collar or nut 31. This nut holds the parts together before the spring drum is mounted on the shaft 8 and affords means for adjusting the bevels of the inner half of the race way. The tension of the motor spring may be adjusted by a worm 18 actuating the worm gear 10 and having a bearing in a part 12 of the barrel supporting bracket. The reduced part 8 of the shaft instead of being flattened on one side may be square in cross section and the sleeve may have a corresponding bore. The ribbon mecha nism may be driven by bevel gear 100 in the end of a stud shaft carrying at its other end a ratchet wheel 101 engaged by a spring pressed driving pawl 102 pivoted in an arm on the side of the spring barrel.

Figs. 2 and 4 show a modification in which the spring barrel has a double ball bearing. The shaft is provided with a worm gear 32 engaged by a worm 33 to adjust the tension of the spring. There is a sleeve having a hub 34 on which is the spring securing hook 9. Each of the shoulders formed by the hub is tapered as at 35 to form one-half of a ball race. One side plate 36 of the spring barrel casing is formed with a cup shaped recess 37 in which is seated a hard metal cup shaped ring 38 forming one part of the ball race, the other part of which is formed by the bevel shoulder of the hub 34. The opposite ball race is formed by the other tapered shoulder of the hub and the inner face of a ring plug 40 screwing into the hollow hub formed on the other side plate 41 of the spring barrel. The reduced part 42 of the sleeve on this latter side of spring barrel is shown as of skeleton construction, the body of which is of less diameter than the opposite side 36 and the connecting screws 45 pass through lugs 46 at the periphery of the plate 41.

Fig. 5 is an elevation showing the inner face of side plate 36 of the spring barrel, it also being shown with symmetrically disposedopenings 47.

Fig. 7 is a View similar to Fig. 3 and is intended merely to show that the reduced part 8 of the shaft may be square in cross section.

I claim:

1. Spring barrel mechanism for a typewriting machine, comprising a spring barrel provided with the outer part of a ball race way, a spring barrel shaft having a sleeve formed with a hub located within the barrel and having a tapered shoulder and means for attachment of the inner end of the spring, a screw for connecting the sleeve and shaft for positive rotation together, and a ball bearing, one part of the race way of which is formed by the tapered shoulder of the hub and the other part carried bythe barrel.

2. Spring barrel mechanism for a type writing machine, comprising a spring barrel provided with the outer part of a ball race way, a spring barrel shaft having a sleeve formed with a hub located within the barrel and having a tapered shoulder and means for attachment of the end of the spring, a screw for connecting the sleeve and shaft for positive rotation together, a ball bearing one part of the race way of which is formed by the tapered shoulder of the hub and the other part carried by the barrel, a worm gear applied to one member of the shaft and a cooperating worm for effecting adjustment of the tension of the spring.

3. Spring barrel mechanism for a typewriting machine, comprising a spring barrel provided with the outer parts of ball race ways, a two part shaft one of which parts is a sleeve fitting over the other part and having a hub within the spring barrel, said hub having tapered ends and means for attachment of the inner end of the spring, means for connecting the two parts of the shaft for positive rotation together, and a ball hearing at each side of the hub, part of the race-way of each ball bearing being formed by a tapered shoulder of the hub and the other parts carried by the spring barrel.

In testimony whereof, I have hereunto subscribed my name.

LElVIS C. MYERS- lVitnesses E. B. Hnss, FRED J. Provo.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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