US411421A - Type-writing machine - Google Patents

Description

(No Model.)

A. T. BROWN.

TYPE WRITING MAGHINH. No. 411,421. Patented Sept. 24, 1889.

UNITED STATES PATENT firricn.

ALEXANDER T. BROWN, OF SYRACUSE, NEW YORK.

TYPE-WRITING MACHENE.

SPECIFICATION forming part of Letters Patent No. 411,421, dated September 24, 1889.

Application filed October 31, 1887. Serial No. 253,893. (No model.)

To all whom it may concern:

Be it. known that I, ALEXANDER T. BROWN, residing at Syracuse, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Type-\Vriting Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to type-writing machines; and it consists in a brush or cleaning attachment for such machines by which all the printing characters can be readily cleaned.

The object of the invention is to produce an attachment by which the printing characters of a type-writing machine maybe cleaned simultaneously.

Figure 1 represents so much of a wellknown class of type-writing machines as is necessary to an understanding of this invention, the machine being shown partly in section and partly in end elevation with the type-cleaning attachment in position. Fig. 2 is a side elevation of a cleaner, its supporting-bracket, and operating-handle, the latter partly broken away. Fig. 3 is a top plan of rotary cleaner or brush detached. Fig.4 isa vertical section of same.

In the wellknown Remington, Caligraph, and other type-writing machines of similar characterthe printing types or charactors are placed on'the end of levers andare usually in aicircle. When in depressed positiomthe printing characters face inward, and surround a circle, or nearly so. By applying and rotating a circular brush of proper size to the face of these characters all may be .cleaned at once. Of course many modifications of this idea may be easily devised. If the characters are not quite in a circle, the resilience of the brush will still make it effective. The brush may be oscillated instead of rotated, and this will in effect be a reciprocation of the brush and the equivalent in effect of a rightline movement of a straight brush in contact with the printing characters. It is apparent, also, that the cleaner may be any usual cleaner for the purpose.

I have shown the brush illustrated as a suitable one, and will now describe one form of mechanism for carrying the invention into operation.

'vention.

at the same time On these levers the printing characters Eare mounted.

All the devices for operating the printing characters are usual and well-known in typewriters, and form no part of the present in- Only a few of the type-levers are shown. 1

To the frame A, I attach a bracket F by screws or in other convenient manner. The end of this bracket has a screw-threaded socket G below the center of the circle formed by the printing characters when in depressed position, as shown in- Fig. 1. An annular brush or cleaner H is connected by a spiderl with a screw-shaft K, which shaft enters'and fits the thread of socket G. Thesha'ft K terminates at its upper end in the key-post L, and a key M, provided with a crank N, may be applied to this post when desired, thus forming a shifter for the brush or cleaner.

.The screw-shaft K enters the socket G so far that the brush or cleaner I-I maybe run down to the position shown-in Fig. 1 below or out of the Way of the printing characters. By applying the key Myas in Fig. 1, and turning the crank N the cleaner G maybe raised and rotated until the brush operates on all the printing characters. A'few quick turns in'both directions will serve to pass the brush in reverse or spiral direction past and in contact with the face of all the printing characters, effectually removing dust and surplus ink and leaving the type or printing characters in good condition for printing. When not i'n use, the brush may remain below the levers or may be removed from the machine entirely.

It will be .understood that while in com"- pliance with the lawI have described th'ebest 0rm of mechanism with which I am now 3.0-

quainted, I do not limit myself to the precise details of construction shown and described. I do not herein claim the form of lever on which the printing characters are mounted,

as the same will be claimed in a later application.

What I claim is- 1. The combination, with the printing charactors of a-type-writing machine, of a typecleaner in proximity to a plurality of said printing characters, and a brush-shifter by which the cleaner may be moved in contact with and clean a number of the characters simultaneously, substantially as described.

2. The combination, with the printing characters of a type-Writing machine arranged in a circle, of a circular brush of about the same radius supported on the machine in proximity to said characters, so that the brush can come in contact with a plurality of type at one time, substantially as described.

3. The combination, with the printing characters of a type-writing machine, of a brush supported on the machine, ashifter for moving said brush laterally, and mechanism (as a screw and nut) for shifting the brush verti- 2o cally with reference to the printing-characters, substantially as described.

4. The combination, with the printing char act-ers of a type-writing a circle, of a circular cleaner and a screwthr'eaded shaft attached-to said cleaner and operating in a socket in center-of the circleronnd characters are arranged.

5. The combination, with the printing characters of'a type-Writingv machine arranged in a circle, of a rotating brush supported in a socket beneath the center of said circle, and a detachable handle by which said brush may be operated, substantially as described.

which the printing In testimony whereof I affix my signature 35 in presence of two witnesses.

ALEX. T'. BROWN.

Witnesses:

C. W. SMITH, WILBERT L. SMITH.

machine arranged in 25 alignment with the

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