US2029000A - Eraser - Google Patents

Description

E. A. SELL Fan, 2%, 19336.

ERASER Filed April 11, 1955.

V INVENTOR fZW/A fi. 5524 Patented Jan. 28, 1936 UNITED STATES PATENT OFFICE ERASER Application April 11,

2 Claims.

The present invention relates to an improvement in erasers and more particularly to an improvement in circular or disk erasers especially adapted for use in connection with typewriters and the like for erasing printed letters and words, such disk erasers being commonly provided with a brush attachment for convenience in removing the erased material from the paper. The present invention is directed to this type of disk eraser.

In its usual commercial form a disk eraser provided with a brush has the brush rigidly attached thereto and projecting radially therefrom. When the stenographer or other user of this type of eraser has made an erasure on the paper and desires to remove the particles of erased material therefrom it is necessary to turn the eraser through an angle of 180 in order to bring the end of the brush into action. Not only is this movement awkward to accomplish but it is also unnecessarily time consuming,

The object of the present invention is to produce a disk eraser having a brush attachment of such construction that when an erasure has been made, the erased particles may be removed from the paper with a minimum of movement from the erasing to the brushing action and without shifting the eraser in the hand of the user, thereby saving the time of the operator in eifecting the erasure and the cleaning of the paper. To this end the invention consists in the improved disk erasure with attached brush hereinafter fully described and particularly pointed out in the appended claims.

In the accompanying drawing illustrating the preferred form of the invention Fig. 1 is a side elevation of the improved disk eraser with brush attachment in condition for use in the manner intended according to the principle of the invention; Fig. 2 is a side elevation of the parts shown in Fig. 1, with the brush attachment in position in which the brush has heretofore been used; Fig. 3 is a view similar to Fig. 2 but with the outer end of the front arm of the brush supporting yoke removed to show the pivoted construction of the brush; Fig. 4 is a section, on an enlarged scale, taken along the line 4-4 of Fig.2; and Fig. 5 is a section taken along the line 5-5 of Fig. 1.

The improved disk eraser with brush attachment as illustrated in the drawing comprises the usual type of disk eraser which may be composed of rubber with an abra-ding substance incorporated therein. The brush 8, composed of bristles in two sections of slightly fan shape, is mounted in the outer end of a yoke consisting 1935, Serial No. 15,737

of two arms 9 and H) which are pivotally connected with the center of the disk eraser l by the hollow rivet II, the outer ends of which are spun over the inner ends of the arms 9 and It so as to hold them in operative position on the eraser and yet permit the latter to be turned to present fresh edges of the eraser for use as it is worn away.

In the present form of disk eraser with brush attachment the brush 8 is mounted in the outer 10 ends of the arms or sides 9 and ID of the yoke by means of a hollow rivet l2 which passes through the outer ends or head portion M of the yoke arms 9 and ID. The side edges i5 and the outer ends I6 of the head portion M of the yoke are separated, as indicated in Figs. 4 and 5, respectively, to permit the brush to be used in either the position shown in Fig. 1 or in the position shown in Fig. 2. The side edges ll of the head portion [4 curve toward each other, as shown in Fig. 5, so as to hold snugly the curved sides of the cup or holder l8 into which the base or inner ends of the bristles 8 are inserted. The inner end 20 of the brush holder l8 has rounded corners which permit it to be turned readily past the edge or side I! of the head portion M of the yoke arms 9 and II].

By reason of the pivotal mounting of the brush holder or cup l8 in the head Id of the yoke the brush may be used either in the conventional manner, which is the condition shown in Fig. 2, with the brush in alinement with the yoke arms 9 and [0; or in the improved manner according to the principle of the present invention, which is the condition of the eraser and brush shown in Fig. l, with the brush substantially at right angles with the yoke arms. By referring to Fig. 1 it will be understood that if the user of the eraser is employing the point 20 in effecting an erasure, with the brush holding part pointed toward the palm of the hand, only a very slight movement outwardly is required to bring the end of the brush into action to clean the paper. It will be understood of course that the brush 8 may be used at any angle or position between that shown in Fig. 1 and that shown in Fig. 2.

It will thus be recognized that by means of the eraser with attached brush of the present invention the act of brushing away the erased mate rial from the paper can be performed almost immediately following the act of erasing and without shifting the eraser in the hand of the user, whereby the brushing action is made more convenient than heretofore and at the saving of considerable time.

Having thus described the invention, what I claim as new is:-

1. ,In a brush attachment for erasers, wherein a disk eraser; has a central hole, wherein a pair of yoke arms are pivotally connected to the eraser at the central hole with the arms extending radially beyond the periphery of the eraser and wherein a brush is mounted between the otiter ends of the yokerarms, a cup for the inner end of the brush pivotally mounted between the outer ends'of the yoke arms whereby the brush may be angularly adjusted relative to the yoke arms and a disk eraser has a central hole, wherein a pair ofyoke arms are pivotally connected to the eraser at the central hole with the arms extending radially beyond the periphery of the eraser and wherein a brush is mounted between the'outer ends of the yoke arms, a cup for the inner end of the brush pivotally mounted between the outer ends of the yoke arms whereby the brush may be angularly adjusted relative to the yoke arms and eraser, said brush being relatively wide and thin and looped about the piv-tal mounting for the 7 cup. 7 V

' EDWIN A. SELL.

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