US1333166A - Typewriting-machine - Google Patents

Description

I T. c. F'RAD SHAM. TYPEWRITING -I\ IIACHINE APPLICATION FILED NOV. 22. 1917- RENEWED JAN. 26 1920- 1,333,166. Patented Ma r 9, 1920.

manta THOMAS C. FRADSHAM, OF CARSON CITY, NEVADA.

I Specification of Letters Eatcnt.

TYPEWBITING-MAGHIHE.

Patented Mar. 192% Application siee'h'cvemeer ea sir, Serial no. acacia. Renewed January ac, 1920. serial no. senses.

To an cobom it may concern Be it known that I, THOMAS C. hn iosnnn, a citizen of the United States, residing at Carson City, in the county of 'Ormsby, State of Nevada, have invented certain new and useful improvements in Typewriting-Ma chinesgfend l'do hereby declare the follow ing'to be a. full, clear and exact description at the inventiomsuch as will enable others skilled in the art to which it appertains to make and use the/same.

This invention is an improvement in'typewriting machines and has particular reference to a signaling attachment therefor.

An object of the invention is to provide an improved attachment which, when mounted in osition on a-typewriting machine, will indicate, at a predetermined point, that the lines are approaching the end of the page thus enabling the operator to accurately terminate the last line or typewriting the desired distance from the bottom of the 'ae. P A

nether object is to provide an attachment of this character which 18 simple in construction, easy to manufacture, readily.

companying drawing wherein Figure 1 is a fragmentary plan view of the carriage of a typewriting machine show in% the invention applied thereto.

ig.- 2 is a section taken on the line 2--2 of Fig. 1 showing parts of the attachment in their positions previous to being actuated.

Fig. 3 is a View similar to Fig. 2 showing arts of the attachment in their positions ust previous to the operation of the signals.

Fig. 4; is a section on the line i-4 of ig. 5 is a detail perspective view of the striker arm and trip member carried thereby.

Referring more particularly to the drawingthe numeral 5 indicates conventionally the carriage of a typewriting machine of known construction having the usual platen 6 mounted therein and provided with a shaft 7 having a turning knob 8 upon the end thereof.

The attachment which comprises the essential feature of the invention preferably supporting the small bell 10 with which is.

associated a striker 11 including a resilient arm secured at one end to the carriage 5 as indicated at 12. I

A. large gear 13 is preferably mounted upon a screw i i or other pivot secured to the adjacent end of the carriage 5 and said gear is provided with a dial face having a plurality of apertures 15 adjacent the periphery thereof and said apertures are numbered and the distance between adjacent apertures designed to indicate one inch oi the length of a sheet of paper. An adjustable spring arm 16 has one end mounted upon the screw 14 and is movable around the dial to any de-' sired position, said arm carrying at its outer end, a loclring pin 1'? adjustable into engage ment with any one of the apertures or openings 15 so as to releasably retain the arm 16 in an adjusted position.

The striker arm 11 preferably carries a lug 18 adjacent its secured end and said lug; has a projecting shoulder 19 thereon which engages in a recess 20 formed in a trip arm 21 when the same is in normal positiou said arm being pivoted to the lug 18 at 22 and having; a beveled end 28 the under side of which is adapted to be engaged by the enlarged head 24 of the pin 17 at a predetermined time to bodily move said trip and striker away from the bell 10 and then release said parts to permit the striker to engage the 'bell. This action occurs when the gear 13 is rotated in a counter clock-- of a similar gear 26 mounted upon the shaft 7 of the platen 6 and it will thus be seen that said gear 13 will be rotated each time the platen is turned duringthe writing upon a sheet of paper.

In practice, should a sheet of paper or page ten inches long be inserted into the machine and written upon and should it be progress of desired to terminate the writing one inch from the bottom of the page, the pin 17 is disengaged from the gear 13 and the spring arm 16 is then rotated until said pin 17 is in registration with the aperture lltlll'lbQl'QCl. 9 whereupon said pin is engaged with said aperture so that the arm 16 svill more with the gear as the s: .ie is rotated. Before placing the paper in the carriage however, the dial is turned until the arm 16 is adja cent the upper edge of the trip It will thus be apparent that as the gear 13 is rotated the arm 16 will approach and finally engage the lower edge of the trip 21 and move the same and the striker lloutwardly and upon further movement of said armthe trip will be disengaged and the striker released to strike the bell 10. In this manner the operator Will be informed that the last line oftypewriting is at the desired distancefrom the bottom of the page.

What is claimed is 1. The combination with a typewriter platen of my a disk rotatable therefrom, a striker adjustable rotatably of the disk, a bell, a spring, clapper for the bell fixed at one end and a strip carried by the clap- ,iee

per in the path of movement of the striker and operable by movement of the striker in one direction only, to retract and snbsequently release the clapper, the trip having lost motion with respect to the clapper un der the influence of movement of the striker in the opposite direction.

movement of the striker and having lost mo tion with respect to the clapper under the influence of movement of the striker in the opposite direction.

In testimony whereof, I afiix my signature in the presence of two witnesses.

THOMAS C. FRADSHAM.

Witnesses:

EDGAR S. LA CLA1R,.

W ALTER S. DUoAN.

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