US1526962A - Typewriting machine - Google Patents

Description

Feb. 17. 1925.

G. W. CAMPBELL TYPEWRITING MACHINE Original Filed Feb. 2.0, 1922 Patented Feb. 17, 1925.

UNITED STATES P ATEN T O F FlC E y-GEORGE W. CAMPBELL, OF :HARIFORD, CONNECTICUT, ASSIGNOB T0 UNDEBW'OOD TYPEWRITERCOMPANY, 013 NEW YORK, N. YL, A COBPOBATION 01E DELFIWAEE.

TYPE'WIt-ITING MACHINE.

Original application filedFebruary 20, 1922, SerialNo. 537,718. Divided and this application filed March 25,

Tot/ll 1071 am it may concern :Be it known thatI, GEORGE W. CAMPBELL, a CllllZBIlHOI lJllB UnitedYStates, residing in Hartford, inthe county of Hartford ant State of Connecticut, have invented certain new and useful Improvements in TypewritingMachines; of which :the following is a specification.

The present: invention relates to sounddeadening casings for typewriting machines.

wSucha casing usually has a pane of trans parentglass through which the operator may observe the printingon the platen. Various expedients have been resorted to for preventing objectionable reflections from the surface of the glass to the eyes of the o erator. Blinds have been provided, positionable upon the casing in suchmanner as to intercept the rays of light directed at said pane.

An object of the present invention is the provision for this purpose of a blind of an improved construction, which may be connected to the casing ina simple manner, and readily detached; and which may be marketed as an article, unitary in itself; and which, to be applied to the casing, requires no modification or special structure of the latter.

This is a division of my co-pending application, Serial No. 537,718, filed February 20, 1922.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a fragmentary view, in side elevation, partly cross-sectional, showing the upper part of the casing, the upper part of the typewriting machine being indicated in the casing.

Figure 2 is a cross-sectional detail view, on the line 2-2 of Figure 1, showing the attachment of the blind to the casing-cover.

Figure 3 is a front view of the assembly shown in Figure 1 except that the typewriting machine is not indicated.

Referring to the drawings, the sounddeadening casing for the typewriting machine 15 is shown as comprising a bodyportion 10, having a cover-part 11 hinged thereto at 12. The casing is preferably a die-casting, having a lining, not shown, of Suitable sound-deadening material.

Serial No, 251,679.

The casing 10-11 has the usual opening 41 in the top of the cover 11, through which the operator may observe the printing on the platen. A rectangular ribbing 42, depending inward from the top of the cover 11, serves as a frame for a window-pane of glass or other transparent material, and clamps d4: serve to hold the window-pane 43 against a seat 45 in the ribbing 1.-2. Sheets-metal ears id-secured by screws 47 to the-side walls of the window-frame, serve as bearings for pivot pins .8, on which are mounted arms or plates 4C9 which support a blind 50. The plates 4-9 are cut away at 51 centrally of their upper edges, and, forward :and rearwardof these cuts 51, have offsets 52, to which the blind is soldered or otherwise secured. The blind 50 may be of thin sheet-metal or other suitable material; and, to strengthen the same, is provided near its edges with corrugations 53, and is centrally curved as at 54.

In Figure 1 the blind 50 is shown as set at such an angle that its rear edge 55 rests upon or is in contact with the top of the cover 11. The angular setting of the blind may, however, be varied at will by loosening the nuts 56 on the screws 48, which serve as the pivot pins for said arms a9, and by tightening these nuts after the arms 49 have been swung to the desired position.

It will be noted that, upon removal of the screws 47, the ears i6, together with the arms 49 and blind 50, may be removed as a unit when desired. It will also be noted that the blind 50 and its connections are attachable to the cover 11 without modification of the latter, and that the attachment is so simple and convenient that the device may be marketed independently of the easing 10-11, to be bought and attached to the casing if desired.

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 sound-deadening casing for a type writing machine, having an opening therein through which the operator may observe the printing on the platen of a machine within the same, a frame formed in the wall of the casing for a window-pane, brackets set within the opening and secured to the sides of the frame, and a blind secured to the brackets.

2. A sound-deadening casing for a typewriting machine, having an opening therein through which the operator may observe the printing on the platen of a machine within the same, a frame formed in the wall of the casing for a window-pane, fiat, detachable brackets set within the opening and secured to the sides of the frame, and a blind secured to the brackets.

3. A sound-deadening casing for a typewriting machine, having an opening therein through which the operator may observe the printing on the platen of amachine within the same, a frame formed in the wall of the casing for a window-pane flat, detachable brackets set within the opening and secured to the sides of the frame, and a blind pivotally adjustable on the brackets.

4:. A sound-deadening casing for a typewriting machine, having an opening therein through which the operator may observe the printing on the platen of a machine \.i:11'll11 the same, a. frame formed in the wall of the casing for a window-pane, brackets on the casing, and a corrugated sheet-metal blind secured to the brackets.

5. A sound-deadening casing for a typewriting machine, having an opening therein through which the operator may observe the printing on the platen of a machine within the same, a frame formed in the wall of the casing for a Window-pane, brackets on the casing midway of the sides of the opening, a. sheet-metal blind corrugated near its edges, and detachable plates pivotally adjustable on the brackets for supporting the blind midway of the sides thereof.

6. A blind for the window of a sounddeadening casing, comprising a non-transparent plate, arms to which the plate is seecured, b1; ckets. and pivotally adjustable connections for the arms to the brackets, such that the brackets, arms and plate form an angularly flexible unitary structure attachable at will to the casing.

7. A sound-deadening casing for a typewriting machine, having therein an opening through which the operator may observe the printing on the platen of the machine with in said casing, a. frame formed in the wall of the casing for a window-pane, brackets on the casing midway of the sides of said opening, a blind for said pane, and plates pivotally adjustable on the brackets for porting said blind.

GEORGE W. CA MPBELL.

Witnesses EDWARD P. STORY, EDWARD AMERWAN.

sup-

Images