US478406A - Oscae cohn - Google Patents

Description

(No Model.)

OJ OOHN. I CLEANING DEVICE FOR TYPE WRITING MACHINES.

\ Patented July 5', 1892.

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OSCAR COHN, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO MAX W.

- HENIUS, OF SAME PLACE.

CLEANI NG DEVICE FOR "I'YPE-WRITING MACHINES.

SPECIFICATION forming part of Letters Patent No. 478,406, dated Julyv 5, 1892.

Application filed July 8, 1891. Serial No. 398,741- (No model.) I

To all whom it may concern.-

Be it known that I, OSCAR COHN, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Devices for Cleaning Type-Writing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to produce a simple, inexpensive, easily operated, and easily applied brush-tool for cleaning the types in writing-machines. I am aware that various devices have been devised for this purpose which for various reasons have not proved perfectly satisfactory to the users, the essential requirements being that the device shall be capable of ready attachment and detachment, and will operate quickly and thorough1y,whether the type are arranged in circular or oval form, and without danger of soiling the fingers of the operator.

With these ends inviewl have devised the novel brush-tool which I will now describe, referring by numerals to the accompanying drawings, forming part of this specification, in which Figure 1 is an elevation of my novel brushtool complete and in operative position, a portion of the frame of a type-writer to which it is attached being shown in section, and opposite type-bars with types thereon being shown in substantiallythe position they occupy in the machine; Fig. 2 .aview showing the manner in which the brush may be tilted over in order to place it in operative position in certain machines; Fig. 3, a section on the line w m in Fig. 1, looking down; and Fig. 4. is a section on the line y y in Fig. 1, looking down.

1 denotes a circular brush, which is carried by a shank 2 and rotates in the horizontal plane.

As it is necessary in certain machines-for example, the Caligraphto tilt the brush upward in order to place it in operative position within the type-bars, I preferably provide the shank with a joint 3, over which a sleeve 4 slides, the sleeve being provided with alug 5,

from which a chain 6 extends to the brush. When the sleeve is pushed down, as in Fig. 1, it covers the joint and holds the brush 1n operative position. When the sleeve is moved up, however, as in Fig. 2, the joint is left uncovered and the chain swings the brush into nearly a vertical position. The shank is oarried by an attaching-arm 7, the inner end of which is bifurcated so as to embrace some portion of the frame of the machine, such portion of the machine being indicated in the present instance by 8.

9 denotes a thumb screw which passes through one of the branches and is threaded to engage the other branch, so as to clamp said branches tightly about the frameof the machine, as shown in Fig. 1. The shank passes through a hole 10 in attaching-arm 7, which is made larger than the shank, so as to permit vibratory or wabbling motion of the brush, as will be more fully explained. The shank and brush are held in operative position by collars l1, placed, respectively, above and below the attaching-arm. The upper end of the shank consists of a crank 12, having the usual hand-piece 13.

I have only shown two of the type-bars of the machine, which are indicated by 14, the types at their lower ends being indicated by 15.

In use the brush is placed in operative position, as indicated in Fig. 1, and if it has been tilted to place it there is turned into operative position and the joint covered by the sleeve. The attaching-arm is placed over the portion of the machine to which it is to be attached and secured there by the thumb-screw.

In use the operator simply turns a crank. A moments operation of the crank, owing to the fact that the shank passes loosely through the attaching-arm, is amply sufficient to clean the entire set of types, as the brush in addition to its rotary movement will have an oscillatory movement, it being evident that when the pressure of the hand in turning the crank forces it in any direction, the brush will be swung in the opposite direction and into contact with the types upon that side whether arranged in circular or oval form. In use, as a matter of fact, a portion of the brush passes over the face of each type, after which the brush passes to the next type, thus swmgmgaronndthe circle of types andbrushing one type after the other and cleaning the whole of them perfectly.

Having thus described my invention, I cla1m- 1. A device for cleaning the typeset writ- 1ng-machines when arranged 'in circular or oval form, consisting, essentially, of a suitable attaching-arm, a circular horizontally-acting brush of less diameter than the distance be tween" the nearest types, ashank by which the brush is carried and which is loosely journaled 1n the attaching-arm, and means, as a crank, for turning theloosely-journaled shank so that 1n addition to its rotary movement an oscillatory movement is imparted to the brush,whereby the brush is brought successively in contact brush,a sleeve covering the joint and connected to the brush so as to tilt it when the sleeve is raised, and an attaching-arm in which the shank is loosely held, as and for the purpose set forth.

In testimony whereof I at'fix my signature in presence of two witnesses.

OSCAR COHN.

Witnesses:

MAX W. I'IENIUS, A. M. VVOOSTER.

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