US1440792A - Typewriting machine - Google Patents

Description

Jan. 2, 1923. 1,440,792

E. A. PETERSON.

TYPEWRITING MACHINE. FILED SEPT 21, 1920.

by {My Affom y Patented Jan. 2, 1923.

UNITED STATES PATENT OFFICE.

:ILDWIN A. PETERSON, F MADISON, WISCONSIN, ASSIGNOR TO UNDERWOOD TYPE- CQMP A NY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPEWBITING MACHINE.

Application filed September 21, 1920. Serial No. 411,717.

To all whom it may concern:

Be it knownthat I, EDWIN A. PETERSON, acitizen ofthe United States, residing in Madison, in the county ofDane and State of Wisconsin, have invented certain new and useful Improvements in Typewriting Machines, of'which the following is a specification." 'This invention relates to typewriting machines, and one of the principal objects thereofis to protect the front face of the 'typew'r iting machine frame from Wear and defacement incidental to cleaning of the type faces. In machines, such as the Underwood typewriter, to which my improvement is particularly applicable, the ink from the type,

the operationof cleaning the same, gets "onto th'eedgepart of the frame adjacent which the types rest in normal position, re-

' suiting in'not only smearing the same, but

i in removing the gloss and gradually eradicating themargin lines and destroying the name" which is usually marked or stenciled just under the edge of the frame. I "A {feature of this invention consists in providing-a ledge at the outer edge of the -frame, sothat when the type are brushed the face of the plate is protected by the ledge from the abrasive action of the brush strokes, and from the smearing of ink and dir'tthereon. i

7 More particularly, the invention, in one embodiment thereof, consists in providing a separate attachable and detachable coverplate carrying said ledge, and having an upper-flange extending rearwardlyto overlie and pro'tecta rearwardly-extending upper "edge part of a frontframe plate terminat- 4qiing adjacent and at the front of the types,

and havingalower protective and strength ening flangeat the front of the frame plate, -=ysa;id:;ledge preferably beingfformed by a 4121 es. I 'r 11",. Qther features and advantages will here- .in'afler-epp ar. a I '1 "intheiaccompanying drawings,

GFigure'I'isa; perspective view of an Un- 1 u-shapedbend between and joining the two g able cover-plate is provided, the arcuate U- Z-shapeddedge 6 has its upper leg extended Y rearwardly to form-an upper flange 12 overlying and protecting the rearwardly-turned demoed typewnting machine, showing my i pm n nt grplies i the et plate.

in an arc of a circle and at their forward ends have type-heads 2 carrying typesll,

rest, when in normal position, upon a supportingmember 4%, shown in F gure 2, and

the type-heads 2 at this time lie adjacent and just to the rear of the inner edge of thearcuate upper edge part 5 of the front plate, with thetype's 3 exposed upwardly at a slight-elevation'above the rearwardlyturned arcuate upper edge part 5 of the front plate 1. In order to protect the front face of the plate 1, I provide a ledge'G at the outer top edge thereof, and this ledge 6 may be formed integral with the plate 1 or it may constitute a separate cover-plate, which may be attached to the frame in any suitable manner. When a separate coverplate is used, I prefer to form the same as indicated in Figure 1, in which said coverplate has its ends 7 bent at 8, and further bent at 9 to form hooks or catches 9 which may hook over the rear edges 10 of the rearwardly-turned upper lateral parts 11 of the machine frame plate 1. In both constructions, it is preferable that the word Underwood, which is usually put on below the top edge of the frame plate, be placed a little bit lower than the position usually occupied. I

. The ar'cuate forwardly-projecting overhanging-shelf or ledge 6 is preferably fornt ed, as shown in the drawings, bya trans "versely U-shapedbendor loop. In the form of the inventionillustrated in the drawings, inwhich aseparate attachable and detacharcuate upper edge part 5 jofthe front frame plate 1, and has its lower leg turned downridlr. 13 o e-a lew fl ng t the front of the frame plate l. The ledge 6 protects the lettered and ornamentally line front face of the front plate 1 from foreign matter resulting from cleaning the types 3, while the rear flange 12 not only protects the rearwardly-extending plate part 5 from foreign matter but also from abrasion which would result from accidental contact of the cleaning brush. The name Underwood is placed just below the lower edge of the downwardly-extending flange 14, as indicated in Figure 1 of the drawings, by the terminal letters UD, so as to be shielded and protected by the ledge 6.

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, I claim:

1. A front-strike typewriting machine having, in combination, type-levers normally occupying a substantially horizontal position and arranged in the arc of a circle with types on the forward ends thereof exposed upwardly, and a front frame plate provided with an arcuate upper edge adjacent the types at the front thereof and extending downwardly, said front plate being provided adjacent its upper edge with a forwardlyprojecting shelf or ledge for protecting the front face of the front frame plate below said ledge from foreign'matter resulting from cleaning the types.

2. In a front-strike typewriting machine having type-levers normally occupying a substantially horizontal position in the arc of a circle with types on their forward ends exposed upwardly, and having a front frame plate provided with an arcuate upper edge part terminating adjacent and at the front of the types and extending downwardly, the combination of an attachable and detachable cover-plate for the upper edge part of the front frame plate and having a forwardlyprojecting overhanging shelf or ledge for protecting the front face of the front frame plate below said ledge from foreign matter resulting from cleaning the types.

3. In a front-strike typewriting machine having type-levers normally occupying a. substantially horizontal position in the arc of a circle with types on their forward ends exposed upwardly, and having a front frame plate provided with an arcuate upper edge part terminating adjacent and at the front of the types and extending downwardly, the combination of an attachable and detachable cover-plate for theupper edge part of the front frame plate and having a forwardly projecting overhanging shelf or ledge for protecting the front face of the front frame plate below said ledge from foreign matter resulting from cleaning the types, the coverplate compris ng a unitary device provided at its ends with catches for detachably engaging over the lateral upper edges of the front frame plate for detachably holding the cover-plate in place on the front frame plate.

4. In a front-strike typewriting machine having, in combination, type-levers normally occupying a substantially horizontal position and arranged in the arc of a circle with types on the forward ends thereof exposed upwardly, and a front frame plate having a substantially vertical part providing a front face and having an arcuate upper edge adjacent and at the front of the types, said front plate being provided adjacent its up per edge with a forwardly-rounded U-shaped overhanging shelf or ledge for protecting the front face of the front plate from foreign matter resulting from cleaning the types.

5. In a front-strike typewriting machine having type-levers normally occupying a substantially horizontal position in the arc of a circle with types on their forward ends exposed upwardly, and having a front frameplate provided with an arcuate upper edge part terminating adjacent and at the front of the types, the combination of an attachable and detachable cover-plate seated on and supported by the upper edge part of the front frame plate for protecting said upper edge part of the frame plate from foreign matter resulting from cleaning the types and means for securing the cover-plate to the machine.

6. In a front-strike typewriting machine having type-levers normally occupying a substantially horizontal position in the arc of a circle with types on their forward ends exposed upwardly, and having a front frame plate comprising, a substantially vertical lower part and a rearwardly-extending arcuate upper edge part terminating adjacent and at the front of the types, the combination of an attachable and detachable coverplate seated on and supported by the rearwardly-extending upper edge part of the front frame plate for protecting said rearwardly-extending part of the front frame plate during the cleaning of the types.

7. In a front-strike typewriting machine having type-levers normally occupying a substantiallyhorizontal position in the arc of a circle with types on their forward ends exposed upwardly. and having a front frame plate comprising a substantially vertical lower part and a rearwardly-extending arcu- L ate upper edge part terminating adjacent and at the front of the types, the combination of an attachable and detachable coverplate comprising an arcuate forward1y rounded U-shaped overhanging shelf or ledge projecting forwardly beyond the vertical part of the front frame plate for protecting the front face thereof from foreign matter resulting from cleaning thetypes, an upper flange extending rearwardly from the upper leg of the U-shaped ledge and oven the front frame plate for removably holding lying the rearwardly-extending upper edge the cover-plate in place on the front frame part of the front frame plate for protecting plate.

said rearwardly-extending part of the frame EDWIN A. PETERSON. 5 plate during the cleaning of the types, and Witnesses:

terminal catches on the cover-plate for de- KING N. BACON,

tachably engaging over the upper edge of ANITA WILKE.

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