US989230A - Eraser attachment for type-writing machines. - Google Patents

Description

L. A. CARTER & W. J. HALDAN.

ERASER ATTACHMENT FOR TYPE WRITING MACHINES.

APPLICATION FILED MAY 31'. 1910.

Patented Apr. 11, 1911.

i STATES PATENT OFFICE.

LOUIS ,A. outrun, or omann, Ann wrnnrm .1. BALDA'N, or-nnnknr-nr.

'curromr'xfhs'srononsor' ONE-THIRD ro GEORGE E. ALLEN, or MILL a f arracnmnnr roa mn-wm'rme moraines. l

Specification of Letters Patent. Patented Apr, 11, 1911, i

mama filed May 31, 1910. Serial No. 564,055.,

6 county, California, both citizens of the United States, have. invented new and useful Improvements in Eraser Attachments for Type-Writing Machines, ofwhich the following is a specification.

, This invention relates toattachments for typewriters and morelparticularly to means connected thereto for making erasures An object of our invention is to devise and provide a simple, inexpensive, convenient and eflicientattachment to typewriters whereby the operator is permitted to make erasures without loss of time by sodisposing the eraser that it is at all times within easy and quick access, and to provide a means whereby any portion of the platen desired may be operated'upon; and means are combined to automatically retract the eraser to its position of rest.

The invention consists of the parts and the construction and combination of parts, as hereinafter more fully described and claimed, having reference to the accompanying drawings, m which i re 1 1s a perspective v1ew illustrating the evice. Fig. 2 1s a detail section. Fig. 3 is a rear view of the reel casing. Fig. 4 1s a view showing the pawl and its spring.

It is commonly the practice of stenographers and typewriter o erators to have on a desk a loose eraser, an occasionally it is tied by a string to the machine. In either event, it is necessary to reach for and locate the eraser, and it is sometimes not to be the eraser in a given place, and also that it should be so mounted that it will automatically return to'its normal, idle position.

To accomplish this, we have shown the eraser A as connected by a resilient hook 2 to a cord, chain, or equivalent flexible member 3. The cord 3 passes into a casing 4 which-is substantially watch-shaped, and is secured by means of an adjustable bracket 5 to the frame B of the typewriter.- The 1s bracket '5 -is slotted at 6 in one arm, and

adjustably held by a screw 7 preferably adjacent tothe front of the machine, so that the eraser may easily be carried to the platen C.

To permit angular adjustment of the cas ing 4, it is mounted on bracket 5 by a pivot 8, and the bracket has a curved slot 9 in which is movable a clamp screw 10 in casing 4, which thus ma be rocked angularly on its spindle 8 and ocked by screw 10, to'assume a position convenient to the operator.

For the purpose of maintaining the eraser A in its normal, idle position adjacent to the front of the machine and at the same time cause it to automatically return there after use, the cord or chain 3 is secured to a reel' 11 turnable on spindle 8 in the'casing 4, and which is normally under a winding tension of a suitable spring 12 connected at one end to the reel and at the other to the casing 4. When the eraser is lpulled from its seat on the casing 4 and the curd unwound from the reel 11, the tension of spring 12 is proportionately increased and tends to pull back the eraser as soon as it is released. It is desirable that at the time the operator is using the eraser the tension will be removedfrom chain 3 so that the eraser may be used without restraint, and, therefore, we provide on one side of the reel 11 a ratchet wheel 13 engageable by a suitable pawl 14 pivoted at 15 on the casing 4. The awl 14 is pressed against the ratchet 13 y a small s ring 16, thus holding the reel against return y main spring 12, until the pawl is lifted by a little knob 17 projecting without the front of case 4. By this structure the operator at all times may be sure of locating stem 17' against the wall of the casing 4, so

that the pawl is inoperative. This permits the main spring 12 to constantly pull on the eraser when in use and instantly retract it when the operator is through erasing. A small, soft collar or ring 18 is interposed on chain 3 between hook 2 and the casing 4, whereby the parts are rotected from in ury by violent impact as t e spring returns the, eraser, and it also deadens the noise. The hook 2 is formed of resilient wire and has two separate arms which may be spread apart at their ends, so that the erasers-may be easily and quickly renewed as they wear.

Having thus described our invention, what we claim and desire to secure by Letters Patent is 1. The combination with a typewriter and one of its screws, of a casing, a slotted bracket thereon adapted to be clamped by the screw, means whereby the casing is angularly adjustable on thebracket, and an eraser flexibly connected to the casing.

2. The combination with a t lpewriter, of a winding drum, an eraser flexi y connected thereto, a slotted bracket upon which the drum is adjustable, and means-whereb the bracket is detachably secured to the rame of the typewriter.

3; An erasing attachment for typewriters comprisingan eraser, a casing adapted to be secured to the machine, an automatic reel in said casing, flexible connections between said reel and said eraser, and means for auto- Y connections when the eraser is in matically rel-iving'the tension-of the con {motions when the eraser is in operative posixon.

4. An erasing attachment for typewriters comprlsing an adjustable bracket secured to the machine, a casing on said bracket, a winding reel inthe casing, an eraser, means whereby said eraser is flexibly and detachably secured to said reel, and means for automatically relieving the tension of the operative pos1t1on.

5. erasing attachment for typewriting machines comprising a casing, a bracket adapted to be secured to the machine and upon which the casing is angularly adjustable, an eraser, means within the casing for automatically maintaining the eraser in juxtaposition to the casing, and connections between the eraser and said means.

. In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

LOUIS A. CARTER. WILLIAM J. HALDAN. Witnesses L. A. ALLYN, B. F. MILLER.

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