US1492539A

US1492539A - Typewriting machine

Info

Publication number: US1492539A
Application number: US505770A
Authority: US
Inventors: Jesse A B Smith
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1921-10-06
Filing date: 1921-10-06
Publication date: 1924-04-29
Anticipated expiration: 1941-04-29

Description

A ril 29 1924.

I J. A. B. SMITH TYPEWRITING MACHINE Filed-' Oct. 6. 1921 togetherv with its carbon-sheet, while the Patented Apr. 29, 1924.

UNITED STATES 1,492,539 PATENT, OFFICE.

JESSE A. B. SMITH, OF STAMFORD, CONNECTICUT, ASS IGNQR TO UNDER-WOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWRITING MACHINE.

Application filed October 6, 1521. Serial No. 505,770.

To all whomt may concern:

Be it known that I, JESSE A. B. SMITH, a citizen of the United States, residing in Stamford, in'the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

This invention relates to attachments for typewriting machines, and is designed for use where the items on a plurality of successive outer sheets, such as statement or memorandum sheets, are typed also upon an inner sheet, such as a journal or other record-sheet, which remains in the machine,

statement-sheets are changed. When a. statement-sheet is to be inserted, the lower rearwardly-extending portions of the record-sheet and the carbon-sheet must be raised, and the statement-sheet inserted thereunder, so that said :tatement-sheet Will be the outermost-sheet at the front of the platen. To avoid the' necessity" of lifting the rearward portions of the carbon and record sheets each time a new statementsheet is to be inserted, this invention provides an auxiliary paper-table mounted above the usual main paper-table, so that the record and carbon sheets may be fed over said auxiliary paper-table which holds the rearward portions of said sheets elevated, thus permitting the statement-sheets to be fed over said main table Without necessitating the lifting of the rear ends of the carbon-sheet and record or ledger-sheet.

The lower edge of the auxiliary papertable terminates some .distance to the rear of the platen toprovide suflicient clearance for sheets fed over said main table, and when the lower end of the record-sheet is being typed, said end would ordinarilydrop off the auxiliary table. If the carbon-sheet were of the same length as the record-sheet, both sheets would drop off the table when the lowerend of the record-sheet was being typed, and therear portions of the sheets would interfere with the insertion of a new statement-sheet. To avoid this difliculty, the carbon-sheet-is'longer than the recordsheet, so that, when the lower end of the latter is being typed, the lower end of the carbon-sheet is still on the auxiliary table,-

thus permitting the statement-sheets to be inserted thereunder without Interference. u

The carbon-sheet and the record-sheet are passed over the auxiliary table when inserting them into the machine. The auxiliary table normally stands atan inconvenient angle for introducing the leading ends of the sheets between the rear feed-rolls and the platen. To obviate this objection, the auxiliary paper-table is pivotally mounted so that it may be thrown rear- Wardly to stand substantially at the same angle as the main paper-table when the carbon and record sheets are to be inserted around theiplaten. When the leading ends of the carbon and record sheets have been drawn around to the printing .point, the

auxiliary table may again be raised abovethe main table. Suitable stops may be 'pro- .vided for limiting the forward and rearward movement of the auxiliary table and devices for holding said table in forward or rearward position.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a view of the typewriter carriage with the invention applied thereto.

Figure 2 is a sectional side elevation showing, in dot-and-dash lines, the position of the auxiliary table when a record-sheet is to be inserted.

Figure 3 is a view similar to Figure 2, but illustrating the insertion of a statementsheet when the trailing end of the recordsheet has been fed off the'lo-wer end of the auxiliary table.

Referring to the drawings, there is shown a platen-frame 10 forming part of the usual carriage in the Underwood standard typewriting machine, said frame comprising end walls 11 in which is journaled a. shaft 12 havinga platen 13 fixed thereto, said platen being rotatable by knobs or finger-wheels 14 fixed to .the ends of the platen-shaft and the usual line-spacing .mechanism (not.

shown). The platen-frame supports a paper-table 18' terminating at the front in a paper-apron 19, the latter having openings through which extendthe usual front and rear pressure rolls 20 and 21.

To maintain the rear portion of an inner record or proof-sheet 25 and of an outer carbon-sheet 26 raised above the paper-table 18', in order to permit several successive statement-or memorandum sheets 27 'to be inserted into the machine while the same hon sheets, said record-sheetfand carbonsheet are passed over an auxiliary papertable 30 raised above table 18 and positioned to direct sheets to the bite formed by the platen and the rear pressure rolls'21. With this arrangement, the rear portions of the carbon and record sheets are always held above the table 18, thus permitting the statement-sheets to be inserted beneath the carbon and record sheets without interfer ence by the latter. When a statement-sheet has been typed, the pressure rolls 20 and 21 are thrown 011' by the usual feed-roll release mechanism (not shown) and the statementsheet is withdrawn, the record and carbonsheets, which are wider than the statementsheet, being held by the usualpaper-fingers 32. A new statement-sheet is passed over table 18 beneath the auxiliary table 30, and

hence beneath the rearward portions of the record-sheet and thecarbon-sheet and adjusted to the printing point indicated by the type-head 33. The pressure rolls are then again applied so that the sheets may be fed around the platen in the usual manner as they are typed.-

This operation is repeated as'often as desired, the record and carbon sheets being suitably line-spaced. When the bottom of the record-sheet is being typed, the lower end thereof has left the auxiliary table, since said table terminates some distance to the rear of the platen to allow sufiicient clearancespace for the statement-sheet. To enable the insertion ofthe statement-sheet under the lower end of the record-sheet without interference of the lower end of said record-sheet, the carbon-sheet is somewhat longer than the record-sheet, so that the carbon-sheet rests upon the auxiliary table even after the record-sheet has left said table (see Figure Since the carbon-sheet is the outer sheet, the statementsheets may be inserted thereunder while the bottom of the record-sheet is beneath the platen.

To insert the record and carbon sheets into the machine, they are passed over the auxiliary table and their leading ends fed into the bite between the platen and rear pressure rolls21. The auxiliary table, however, normally stands at an angle which renders it convenient for the insertionof the statement-sheets and which renders it inconvenient for the leading ends of the record and carbon sheets to be passed into the bite of the platen and the feed-rolls 20. The auxiliary table is, therefore, pivotally mounted preferably on a tie-bar 40 upon which the usual paper-fingers 32 are mounted, so that said table may be swung rearwardly to an angle substantially the same as eeaaee the main paper-table 18. After-the leading The auxiliary table may be held in its raised position by a spring catch or detent 43 engaging a tie-rod i4: mounted between brackets 45. The brackets 45 may be the usual tally-strip attachment rod brackets. The rearward movement of the auxiliary table may be limited by stop 46 on said catch 43 engaging said rod 44.

The statement-sheets 27 are narrower than the record-sheets 25, and, as shown'in Figure 1, pass between the paper-fingers 32. To prevent the leading ends of the statenient-sheets from falling forwardly, provision may be made of a finger 47 suitably supported on the typewriter carriage.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

claim:

1. In a typewriting machine, in combination, a revoluble platen, a platen-frame having a rear paper-table, and an auxiliary table above the rear paper-table-and pivoted to swing about an axis adjacent the rear of the platen to a position close to the rear paper-table for the insertion of a worksheet over the auxiliary table, and to a raised position for the insertion of a worksheet around the. platen outside of the work sheet inserted over the auxiliary table.

2. In a typewriting machine, in combination, a revoluble platen, a platen-frame having a rear paper-table, an auxiliary table above the rear paper-table and pivoted to swing about an axis adjacent the rear of the platen to a position close to the rear papertable for the insertion of a work-sheet over the auxiliary table, and to a raised position for the insertion of a work-sheet around the platen outside of the work-sheetinserted over the auxiliary table, and detent means for holding said auxiliary table in raised p0- sition.

3. In a typewriting machine, in combination, a revoluble platen, a platen-frame comprising a rear paper-table, an auxiliary table above the rear paper-table, brackets extending upwardly "from the auxiliary table near its lower edge, and means on said platenframe for pivotally supporting the upper ends of said brackets to swing about an axis adjacent the rear of the platen.

4. In a typewriting machine, in combination, a revoluble platen, a platen-frame comprising a rear paper-table, an auxiliary Having thus described my invention, I

table above the rear paper-table, brackets extending upwardly from the auxiliary table near its lower edge, means on said platen-frame for pivotally supporting the upper ends of said brackets to swing about an axis adjacent the rear of the platen, and means for detaining said auxiliary table in its lower position close to the rear papertable for the insertion of a work-sheet over the auxiliary table, or in raised position for the insertion of a second work-sheet over the rear paper-table and around the platen outside of the first Work-sheet.

5. In a typewriting machine, in combination, a revoluble platen, a platen-frame comprising a rear paper-table and having a tierod extending thereacross behind the upper part of the platen, paper-fingers on said rod extendingover the top of the platen and down over the front thereof to engage the edges of a Wide sheet on the platen, and an auxiliary table pivoted on said tie-rod for movement into position adjacent the rear paper-table to direct the wide sheet to the bottom of the platen, and into an upper position to-hold the wide sheet above the rear paper-table to permit the successive insertion of narrow sheets between the wide sheet and the rear paper-table and between the paper-fingers at the delivery side of the platen. g

6. In a typewriting machine, in combination, a revoluble platen, a platen-frame comprising a rear paper-table and having a tierod extending thereacross behind the upper part of the platen, paper-fingers on said rod extending over the top of the platen and down over the front thereof to engage the edges of a wide sheet on the platen, an auxiliary table pivoted on said tie-rod for movement into position adjacent the rear paper table to direct the wide sheet to the bottom of the platen, and into an upper position to platen is journaled and comprising a rear paper-table, an auxiliary table having its lower edge adjacent the a ex of the opening between the rear paper-ta 1e and the platen, and means for mounting said auxiliary table on the platen-frame for movement of its rear edge to an upper, position to hold worksheets on thewauxiliary table above the rear aper-table to avoid interference with sheets inserted over the rear paper-table, or to, a lower position for. insertion of a work-sheet over the auxiliary table.

8. The combination witha platen-frame and a revoluble platen mounted in said frame, said frame comprising a main papertable, of an auxiliary paper-table pivotally mounted on said platen-frame and positioned normally above said main table to hold the rearward portions of sheets passed over said auxiliary table in raised position above said main table so as not to interfere with the feeding of sheets over said main table, said :auxiliary table being swingable to lowered position so that the sheets operating thereover may be more easily inserted around said platen, means for holding said auxiliary table in raised position, said means comprising a rod fixed to said platen-frame, a spring-catch fixed to said auxiliary table and engaging said rod, and means for limiting the downward movement of said auxiliary table, said last-named means comprising a stop carried by said auxiliary table and engaging said rod in the lowered position of the auxiliary table.

9. The combination with a' platen-frame and a revoluble platen mounted in said frame, said frame comprising a main papertable, of an auxiliary paper-table pivotally mounted on said platen-frame and positioned normally above said main table to hold the rearward portions of sheets passed over said auxiliary table in raised position above said main table so as not to interfere with the feeding of sheets over said main table,- said auxiliary table being swingable to lowered position, so that the sheets operating'thereover may be more easily inserted around said platen, means for holding said auxiliary table in raised position, said means comprising a rod fixed to said platen-frame, a spring-catch fixed to said auxiliary table and engaging said rod, and means for limiting the downward movement of said auxiliary table, said last-named means comprising a stop carried by said spring-catch and engaging said rod in the lowered position of the auxiliary table.

10. The combination with a platen-frame and a revoluble platen mounted in said frame, said frame comprising a main papertable, of an auxiliary paper-table pivotally mounted on said platen-frame and positioned normally above said main table to hold the rearward portions of sheets passed over said auxiliary tablev in raised position above said main table so as not to interfere with the feeding of sheets over said main table, said'auxiliary table being swingable to lowered position, so that the sheets operating thereover may be more easily inserted around said platen, and means for limiting the downward movement of said auxiliary table, said means comprising a rod fixed to said platen-frame, and a stop carr ed by said auxiliary table and engagmg sald rod in the lowered position of the auxiliary table.

11. lin a typewriting machine, in eomhina and means for supporting said auxiliary table for movement to a lower position adj acent said rear paper-table and with its lower edge comparatively close to the apex of the opening between the rear paper-table and the rear of the platen for insertion oi"; a WOIk-Sl'lBGl] above the auxiliary table, or to an upper position With its lower edge Withdrawn rearwardly for insertion of a second work-sheet over the rear paper-tabie and around the platen outside of the first Wor sheet.

12. In a typewriting machine, in combination, a platen-frame comprising a rear neeaeee paper-table, a platen journaled in said frame, and an auxiliary table to support above said rear paper-table a Work-sheet and a carbon-sheet having an extension beyond the trailing edge of the work-sheet, so that a second Work-sheet may be inserted over the rear paper-table, the forward edge of said auxiliary table being sufficiently close to the apex of the opening between the rear paper-table and the platen toenable the extension of the carbon-sheet to support the rear edge 01 the first work-sheet, when the latter is drawn ed the auxiliary table, and to guide the second Work-sheet around the platen outside of the first.

JESSE A. B. SMITH.

Witnesses:

MARION Mot]ennnrn: EDITH Linnnr.