US1595608A

US1595608A - Typewriting machine

Info

Publication number: US1595608A
Application number: US670826A
Authority: US
Inventors: Alfred G F Kurowski
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1923-10-26
Filing date: 1923-10-26
Publication date: 1926-08-10
Anticipated expiration: 1943-08-10

Description

Aug. 10 1-926 A. G. F. KUROWSKI A TYPEWRITING MACH'INE:

Filed Oct. '26 1923 five/77".:

LIPIII Patented Aug. 10, 1926. Y

UNITED sTA'rss 1,595,608. PATENT OFFICE.

ALFRED G. KUROWSKI, OF BROOKLYN, NEW YORK, ASSIGNOR TO UNDER-WOOD TYPEWRITER COMPANY, OF N EW YORK, N. Y A CORPORATION 0J5 DELAWARE.

- TYPEWRITING MACHINE;

Application. filed October 26, 1923. Serial No. 670,826.

ably the platen, itself, is not line-spaced in the writing of a stencil. Where considerable stenciling work is to be done, it is convenient to employ a platen having the backing piece fixed thereon, instead of on the cardholder. Heretofore, however, unless platens, having thebacking fixed thereto, have had line-space movement with the card-holdenthe typing has always been at one line-position on the backing piece; with the result that the backing piece has soon become worn and has had to be replaced or reversed.

The object of the present invention is theprovision of means whereby, in a machine in which the platen has no line-space movement in stenciling, and in which the backing is fixed to the platen, the backing may nevertheless be typed upon over substantially its entire area.

'More particularly, a feature of the in vention is the provision of means for effecting rotary adjustment of theplaten with the backing, after the latter is worn at one line-position thereof, so that successive linepositions of the backing may be set for impact of the type thereon.

A feature of the invention is a gage for determining the successive settings or adjustments of the platen and backing, and for indicating, at all times, the existing adjustment ofthe backing, and the amount of worn and fresh area of the backing.

Other featuresand advantages will hereinafter appear.

In the accompanying drawings,

, Figure 1 is a front view of a platen and associated parts embodying the present inright-hand end of the platen, showing more particularly the gage, and mounting therefor, for effectin of the platen and celluloid.

The platen 10 has end pieces 11 with hubs 12 thereon, so that, by means of set-screws 13, the platen'inay be fixedly secured to a shaft 14, journaled in the end plates 15 of the platen carriage or frame. Upon loosening the screws 13, the shaft 14 may be withdrawn lengthwise from the platen and the platen removed. from the machine. This enables the special platen 10 shown in the drawings to be substituted in the machine for'the ordinary platen used in other work.

For line-spacing the ordinary platen there is a ratchet-wheel 16 fast to the platen axle, which is rotated by any suitable line-space mechanism, such, for instance, as that commonly found in the standard Underwood typewriting machine, and which comprises a slide (not shown) carrying a pawl (not shown) for engagement with the ratchetwheeh- A spring detent 17 by engagement with the ratchet-wheel, in the standard machine, holds the platen in line-spaced position against accidental rotary displacement. The axle 14 of the present s ecial platen is also equipped with this rateet-wheel 16 and detent 17; but, as hereinafter pointed out, the ratchet-wheel 16 and detent 17 here are employed simply to hold the platen in its setting, against accidental rotary displacement. The axle 14 of the present special platen is also provided with the usual handwheels 18, whereby the platen may be r0- tated when desired.

Stencil-cards,'oneof which is shown in the machine at 19, are successively placed in a card-holder 20, which latter is not mounted in a suitable manner for line-space movement with the card over the surface of the platen while the latter is held against ro-' tation by the detent 17. The card-holder may be mounted, by means not shown, on a shaft 21 on a card-holding frame 22 detachably secured by screws 23 to the side pieces 15 of the platen-frame.

The mounting of the card-holder, and the means by which it receives its line-space movement with the card, are like that shown in my (Jo-pending application, Serial No.

666,907, filed October 6, 1923, to which reference is made to such understanding thereof as may be necessary. In my aforesaid cothe desired rotary setting I pending application, line-space mechanism for the card-holder is actuated by connections to the usual platen line-space mechanism, at a time when the latter is inoperative upon the platen. In that application, 1'. showed the clutch device set forth in United States Letters Patent to Helmond, No. 1,150,366, dated August 17, 19-15, as the means whereby the linespace mechanism might be rendered ineffective to line-space the platen while nevertheless remaining effective to line-space the card-holder. In the present structure such clutch mechanism is omitted; and the usual line-space mechanism is rendered ineffective, to line-space the platen, by removal of the pawl which ordinarily co-operates with the ratchetwheel 16; the line-space mechanism remaining effective, however, to line-space the cardholder by virtue of the connections shown in my aforesaid co-p'end-ing application.

A hacking piece 2%, such, for instance, as celluloid, is shown as secured to the face of the platen by means of clips 25. There is a pair of these clips at each side of the card holder frame; and the clips of each pair are opposed to each other and slightly offset from the surface of the platen, to permit the front and rear edges of the backing piece or celluloid to be inserted thereunder. Screws, 26 hold the clips 25 to the platen. The clips are shown as set beyond the side margins of the card-holder 20, so that the latter may not interfere with the placement and removal of the backing pieces.

Since the platen and backing piece are held by the detent 17 against rotary movement, while the card-holder is line-spaced successively with each card or stencil, the backing piece will be repeatedly typed upon at the same line-position thereof. At such lineeposition of the backing piece, the same ultimately therefore becomes worn. In accordance with the present invention, when such wear has reached an objectionable stage. a fresh surface of the backing piece or celluloid may be presented to the printing. line. This is accomplished by turning the platen with the backing piece, as by; means ofoneof the hand wheels 18, one or more line-space distances to a new rotary setting thereof. The detent 17 permits this rotary adjustment of the platen and backing piece, and holds the platen with thehacking piece in the new position to, which it has been turned. A fresh backing surface having been thus presented to the printing line, the writing or stenciling on the cards may proceed as before until a further rotary ustment of the platen with the, backing piece becomes desirable.

In order that the wear on the backing piece may be extended progressively from the front to the rear edgesthereof, andv in order that the line-position of typing on the stencil may at all times be known, and in order that the proper movement of the platen with the backing piece for a new setting thereof may be properly determined, a gage is provided. This gage consists of a plate 27 carried by arms 28 at the rear thereof, on the shaft 21, and being curved forward and downward as at 80 over and around the surface of the platen. This plate has graduations 31 at line-space distances apart thereon along the path of rotary adjustment of the platen. These graduations are preferably progressively numbered, from front to rear, as indicated at 32. On a plate 33 secured by screws 84 to the surface of the platen is a pointer or indicator 35 for registering with the graduations 31 on the gage-plate 27.

In adjusting the platen and backing piece, the. platen is turned one line-space distance at a time, starting at the position in which the pointer 85 registers with the'graduation numbered 1 on the plate 27, and continu in g until the pointer registers with the graduation numbered 8. In the instance shown, the backing piece is of such width that eight adjustments of the platen result in the use of substantially the entire surface of the backing piece. Of course, if desired. the backing piece might be made wider, and further adjustments thereof provided on the gage-plate.

For holding the gage-plate 27 down in proper position over the platen and for preventing angular distortion or displacement thereof, the plate 33, is; preferably pro; vided with a stud or block 8.6 which projects through a slot 37 extending lengthwise of the plate 27, and which has offsets; 38

rer the upper surface of the plate.

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

Having thus described my invention, claim:

1. In a typewriting, macnine, the combination with a rotatable platen, types, a backing piece for stencilecutting affiried, to the face of said platen and. overlying a plurality of line-position zones thereof, and means for disposingsaid Zones, one at a time, at the printing line of said machine, whereby a fresh surface of said backing piece may be presented, from time to time, for engagement withsaid types, of a, gage arranged for indicating the adjustment of said backing piece. necessary for bringing a fresh surface thereof to said printing line.

2. In a typewriting machine, the combination with a platen-frame, a platen, a backing piece for stencil-cutting affixed to the face of said platen and overlying a plurality of line-position ZOHGS, thereof, and means for disposing said zones, one at a time, at the printing line of said machine,

said platen-frame and disposed of a projecting stud-piece mounted on said platen, and a curved gage-plate mounted on aarallel with the convex surface of said platen and having a lengthwise slot arranged to engage around saidstud-piece, thereby llllllt: ing the extent of'the rotary movement of said backing piece away from said printing line. l u In a tvpewriting machine, thecombination with a platen-frame, a platen, a brickingpiece for stencil-cutting affixed to the face of said platen. so as to overlie a plurality of line-position 'zones'th'ereof, and means for disposing any one of said zones at the printing line of said machine, of a curved gage-plate mounted on said platenframe and disposed parallel with the convex surface of said platen and having a lengthwise slot and graduations therealong, a pointer on said platen for registering with the graduations on said gageplate, and a stud-piece mounted on said platen and engaging in said slot, thereby limiting the retary movement of said backing piece, the length of said slot being arranged so that some portion of said backing piece will al ways he at said printing line.

4:. In a typewriting' machine, a platen, a backing piece, such for instance as celluloid, affixed to the face of the platen, a cardholder, means for adjusting the position of the platen to present a fresh surface of the backing piece to the printing line, and a gage whereby to determine the desired adjustment of the platen and backing piece, said gage comprising a graduated plate on the platen-frame and an indicator on the platen for registering with the graduations on the gage-plate.

5. In a typewriting machine, a platen, a l):2.Cl-ZlilQ piece, such for instance as celluloid, attired to the face of the platen, 'a cardholder, means for adjusting the position of the platen to present a fresh surface of the backing piece to the printing line, and a a ge whereby to determine the desired adjustment of the platen and backing piece, said gage comprising graduated plate'on the platen-frame slotted lengthwise of the path along which the platen is adjustable, an indicator on the platen for registering with the graduations on the gage-plate, and a stud or block on the platen set within the slot in the gage-plate.

6, In a typewriting machine, a platen, a backing piece, such for instance as celluloid, aiiixed to the face of the platen, a cardholder, means for adjusting the position of the platen to present a fresh surface of the backing piece to the printing line, and a whereby to determine the desired adjustment of the platen and backing piece, said gage comprising a graduated plate on the platen-frame slotted lengthwise of the platen, a backing piece, such forinstance as celluloid, aflixed to the face of the platen, a cardholder, means for effecting a rotary adjustment of the platen to present afresh surface of the backing piece to the printing line, and a gage whereby to determine the desired adjustment of the platen and backing piece, :said gage comprising a graduated plate affixed to the platen-frame and curved over the surface of the platen,

and an indicator on the platen for registering with the graduations on the gage-plate.

8. In a typewriting machine, a rotary platen, a backing piece, such for instance as celluloid, affixed to the face of the platen, a card-holder,'means for efiecting a rotary adjustment of the platen to present a fresh surface of the backing piece to the printing line, a gage whereby to determine the desired adjustment of the platen and backing piece, said gage comprising a graduated plate aflixed to the platen-frame and curved over the surface of the platen, and an indicator on the platen for registering with the graduations on the gage-plate, and means for holding the platen in gaged position.

9. In a typewriting machine, a rotary platen, a backing piece, such for instance as celluloid, affixed tothe face of the platen, a card-holder, means for effecting a rotary adjustment of the platen to present a fresh surface of the backing piece to the printing line, a gage whereby to determine the desired adjustment of the platen and backing piece, said gage comprising a graduated plate aflixed to the platen-frame and curved over the surface of the platen, and an indicator on the platen for registering with the graduations on the gage-plate, and means comprising a ratchet-wheel on the platen and a detent for engagement with the ratchet-wheel to hold the platen in gaged position.

- 10. In a typewritin'g machine, a platen, mechanism for line-spacing the platen, means for disabling the platen line-space mechanism, a card-holder, a backing piece, such for instance as celluloid, secured to the face of the platen, and means for adjusting the setting of the platen and backing piece, to present a fresh surface of the backing piece to the printing line.

11. In a typewriting machine, a platen, a backing piece, such for instance as celluloid, afiixed to the face of the platen, a cardholder, means for adjusting the position of the platen to present a fresh surface of the backing piece to the printing line, and a gage whereby to determine the desired adjustment 0f the platen and backing piece, said gage comprising a plate having graduations thereon at line-space distances apart along the path of adjustment of the platen and an indicator on the platen foriregistering with the graduations on the gage.

12. In a typewriting machine, a rotary platen, mechanism for line-spacing the platen comprising aratchet-Wheel afiixed to the platen, means for disabling the platen line-space mechanism, a detent for engagement with the ratchet-Wheel to hold the platen against rotary displacement While the platen is held by the detent, a cardholder, a backing piece, such for instance as celluloid, secured to the face of the platen,

and means for effecting a rotary adjustment of the setting of the platen and backing piece, to present a fresh surface of the backing piece to the printing line, the adjusting means comprising a gage-plate affixed to the platen-frame and extending over the surface of the platenand having graduations thereon at line-space distances apart along the path of adjustment of the platen, and an indicator on the platen for registering With the graduations on the. gage-plate.

ALFRED e. F. KUROWSKI.