US1548320A - Typewriting machine - Google Patents

Description

Aug. 4, 1925. 1,548,320

A. A. JOHN SON TYPEWRITING MACHINE Fi1ed'Nov`. 16. 1922 F/gz MLN,

///fir Patented Aug. 4, 1925.

UNITED STATES PATENT OFFICE.

ARTHUR A. JOHNSON, OF NEW YORK, N. Y., ASSIGNOB T0 UNDERWOOD TYPEWRITEB,

COMPANY, OF NEW YORK, N.. Y.,

A CORPORATION OF DELAWARE TYPEWRITING MACHINE.

' Application led November 1,6, 1922. Serial No. 601,218.

To all whom it may concern.: n

Be it known that I, ARTHUR A. JOHNSON,

4a citizen of the United States, residing in ing machines of thecontinu'ous billing type -such as that disclosed in the patent to Werner-y & Smith, No. 1,132,055. In a machine of this type, there is provided s rear carriage-extension which travels from side to side of the machine, with the carriage, on a rearward extension of the frame. Upon this carriage-extension is mounted a carbon carriage movable toward and from the platen, to hold carbon-sheets interleaved with the folds of a continuous manifold web fed to the machine from the rear. The carbon-carriage is provided with steppedsupports having holes therein lfor receiving studs on carbon-sheet-holding blades which extend alternately across the path of the webs from opposite sides thereof. Each blade is provided with a clip for clipping a carbon-sheet thereto.

It/ sometimes happens that the carbonsheet is clipped to the carbon-blade inan incorrect angular position, that is, in a position in which the carbon-sheet will not be parallel to the direction in which the webs are fed to the machine. sheets are used, aslight error in the angular position in which a carbon-sheet is clipped to the carbon-blade will cause the portion of thefsheet remote from the blade to be misplaced laterally to quite a substantial extent. It is difiicult to determine exactly the proper position of attachment of the carbon-sheet to the blade, and, where the usual type of blade is used, this can only be done by re peated trials. f

With the purpose in view of obviating this diliiculty, a feature of the present invention consists in the provision of a. carbon-carrying blade which is angularly adjustable on the carbon-carriage, whereby a carbon-sheet, clipped to the blade, may be brought into parallelism with the continuous work-webs by angular adjustment of the blade.

Another feature of the invention consists in the provision of a carbon-blade and means When long carbon-V Afor angular-ly adjusting the carbon-blade, so

arranged that the angularposition of the blade cannot be changed by a pull exerted upon the carbonsheet.

Another feature consists in the provision of means for effecting a combined bodily and angular adjustment of the carbon-sheets.

Other features and advantages will herel,

inafter appear.

In the accompanying drawings,

Figure 1 is a plan view of parts of a typewriter of the continuous billing type having the present improvements applied thereto.

Figure 2 is a fragmentary plan View of the carbon-holder-adjusting means, on a larger scale than Figure 1.

Figure 3 is a longitudinal vertical section of the structure shown in Figure 2.

Figure 4 is a plan'view, similar to Figure 2, showing the parts in a different adjusted position.

The typewriting machine, in common with other machines of thi's type, comprises a carriage (not shown) having a rearward extension 11 movable with the carriage in letter-feed direction by the usual carriagepropelling spring, not shown, and in the reverse direction by manual operation. This carriage-extension is supported and guided by the usual rearward extension of the machine-frame. A carbon-carriage 13 is pro-` vided for holding carbon-sheets 14 interleaved between the plies of work-webs 15, which may be"either fan-,fold webs or separate plies, and which are fed to the machine from the rear. This carbon-carriage is stepped to hold the carbon-shcets at suitable elevations, and, during writing operations, is drawn by the webs 15 toward the platenl 16 at each line-spacing operation of the latter, being guided in such movement on rails 17, forming a part of the carriage-extension. The carbon-carriage 13 may be returned to the rear limit of its movement when a form has been completed, as explained in the patent to Wernery & Smith, above referred to, to bring the carbon-sheets 14 into co-operation with a fresh portion of the work-Webs.

0n each step 18 of the carbon-carriage 13 there is provided a short plate 19 having a slot 20 therein, which plate is lixedly, but detachably, secured to the carbon-carriage 13 by studs 21 which are received in holes 22 in the carbon-carriage- A circular cam 23 is eccentrically pivoted on the plate 19 to relatively stationary carbon-blades,

entend above the upper surface thereof and is slidingly received in a closely-fitting circular opening Zlio the end ofa carbon-car# rying blade 25. A headed 'pivot-stud 26 connects a carboivclip 27 to the carbon-blade 25, and hasits head received in the slot 20 in the plate 19. A spacing washer 28, of substantially the same thickness as the carbon-clip, is positioned around the circular cam 23 between the. plate 19 and the carbonblade 25. A threaded stenl 29 extends upwardly from the center ot the eccentricallymounted circular cam 23, and is surrounded b v a washer 30 which bears against the upper face of the carbon-blade 25. A knurled nut 3l for turning the eccentric is screwed upon this stein Q9 to hold the plate 19, carbon-blade Q5 and washers 28 and 30 in assembled position, and a second nut 32 is screwed upon the stem to lock the first nut.

lVhen a carbon-sheet 14, clipped by a blade LCi and clip 2T in the machine, is found to occupy a crooked position, the operator will turn the nut 31' on the stem 29 and thereby rotate the eccentric cam 23 about its pivot. Rotation ot the cam 23 will change the angular position of the carbonbladcQ through `the action of the cam on the walls of the circular opening 24 in the blade, and of the slot 2O on the head of the stud 26, thus adjust-ing the angle of the carbon-sheet carried by the blade.

The ratio ofthe radius ofthe eccentric cam to the radius of the circular path traversed by its center, and the co-etiicient of friction between the carbon-blade and the eri )heral surface of the eccentric are so re ate that it is not possible to turnthe eccentric by force exerted upon the carb0n-blade- There is, therefore, no possibility of the angular adjustment of the blade being affected by the pull of the work-webs upon the carbonsheet.

The angular ad`ustment of the carbonholders is attended y some bodily movement, and, while thisis not great, it is possible that the carbon-sheet may, under some circumstances, be found to be misplaced bodily when the angular adjustment has been effected. Due to the nature of the adjust-ing means, however, there will be two ositions which a. carbon-holder may occupy or every angular position assumed by it. should the carbon-sheet be found to be mis laced bodil after its angular adjustment as been .e fected, the operator may adjust it bodily by rotating the eccentric cam to move the blade to the other position in which it will bear the same angular relationship to the carboncarriage.

The studs 21 on the plates 19 are arranged to co-o erate with the holes ordinarily provided 1n the carboncarriages of machines of this type for the direct attachment1` pf e device disclosed herein is, therefore, capable of being inserted in existing machines with" -sheet=holder angularly for bringing the carbonsheet attached thereto completely into the field of the work and thereby com nsating for skewed attachment of the car onshect, and for retaining it in adjusted position.

2. In a tyiewriting machine, a carlxinsheet-holder or holding carbon-sheets inter leaved with work-sheets, comprising carbonsheet-clipping mea-ns, and means for angularly adjusting a carbon-sheet in the machine while it is clipped by said clipping mea-ns, and compensating for skewed attachment of the carbon-sheet to the clipping means.

3. In a typewriting machine, a carbonpaper-holder, and means for angularly adjusting the carlxm-paper-holder and retaining it in adjusted position, comprising an eccentric, manually-operated means for adjusting the eccentric, and means co-operating with the eccentric to control the angular adjustment of the carbonpaper-holdcr.

4. In a typewriting machine, a carbonpaper-holder, a carbon-sheet-clip thereon a vfinger-piece rotatable by they operator, and

connections between the finger-piece and the carbon-sheet-clip for causing the latter to be angularly adjusted by rotation of the former, said connections being arranged to be inherently immovable by the carbon-sheet-clip, and so causing the clip to be positively retained in any position to winch it is adjusted.

5. In a typewriting machine having a platen, a carbon-paper carriage movable toward and from the platen, carbon-sheetclips mounted on the carbon-pa r carriage, and means for individually justng carbon-sheets while held by said clips to cause their lateral edges to lie substantially in parallelism to the direction of movement of the carbon-paper carriage, the arrangement being such that skewed attachment of the carbon-sheets to the clips can be compensated for, thus obviating repeated trials in the attachment of the carbon-sheets.'

6. In a typewriting machine, a carboncarriage, a slotted plate detachabl secured thereto, a circular cam eccentrical mounted on the plate, a carbon-sheet-ho der having an opening which encircles the cam, and a stud s idable in the slot of the plate, and

means for rotating the cam to change the angular position of the carbon-sheet-holder and thereby alter the position of a carbonsheet held by it.

7. In a typewriting machine, a carboncarriage, a slotted plate detachably secured thereto, a circular cam eccentrically mount- 'ed for rotation on said plate, a carbon-sheetholder comprising a blade having an opening for cooperation with the circular cam, a pivot-stud on the blade, and a cli pivoted on the stud, the said 'stud extending into the slot in the blade, and means for turning the circular cam to adjust the angular position of the carbon-sheet-holder.

8. In a typewriting machine, a carboni paper carnage, a support detachably seof the carbon-sheet thereon, or in parallelism, and means for effecting such adjustments.

10. In a typewriting machine, a support, a carbon-sheet-holder mounted on the 'support, and means for adjusting the position and correcting 'the skewing of a carbonsheet, includin means for adjusting the carbon-sheet-ho der to move the opposite ends of a carbon-sheet held thereby either in the same or opposite directions laterally of the machine at the will of the operator.

11. For use in a continuous billing typewriting machine having a carbon-carriage, a carbon-holding device, comprising a basemember, means for attaching the base-member to the carbon-carriage, a carbon-holder mounted for swinging movement on said base-member, means for swinging the carbon-holder relatively to the base-member, and means for positively preventing accidental swinging movement of the carbonholder in either direction.

12. In combination, a carbon-holder, a fulcrum-member thereon, a support for said carbon-holder having a slot therein for receiving said ulcrum-member, and adjustable means on the support for moving the carbon-holder about the ulcrum in the slot to change the angular position of the carbon-holder.

13. In a typewriting machine, a carbonsheet-holder, a support therefor, a pin-andslot connection between the holder and support, and an eccentric pivoted on the 'support and encircled by the carbon-holder for co-operation therewith, said eccentric being pivoted sufficiently near its center to preclude the possibihty of its being turned by pressure of the carbon-holder upon its periphery.

ARTHUR A. JOHNSON.

Witnesses:

JESSE A. B. SMITH, JENNIE P. THORNE.

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