US1333711A - Timer-brush - Google Patents

Description

F. A. GODLEY.

TIMER BRUSH.

APPLICATIQN FILED AUG. 26, 1919. I '1 ,333 ,71 l PatentedMar. 16, 1920.

FRANK A. GODLEY, F PHILADELIPHIA, PENNSYLVANIA.

TIMER-BRUSH.

Specification of Letters Patent. Patented luau; 16, 1920,

Application filed August 26, 1919. Serial No. 319,979.

To all whom it may concern:

*Be it known that I, FRANK A. GooLEY, a citizen of the United States, residing at the city of Philadelphia,'county of Philadelphia,

and State of Pennsylvania, have invented certain new and useful Improvements in Timer-Brushes, of which the following is a specification.

This invention has relation to a timer brush of the general type shown and described in U. S. Letters Patent #1,296,420, and has for its leading object to so improve the construction of such type of brush that the commercial value thereof is materially enhanced. Other and' further objects reside in the provision of general details of construction and in the provision of certain combination of parts as will hereinafter more fully appear.

The invention consists of the improvements hereinafter described and finally claimed. Y

The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection With the accompanying drawings forming part hereof, and in which:

" Figure 1, is a View in elevation of a timer brush embodying features of the invention,

and

Fig. 2, is a cross-sectional view thereof.

For the purpose of illustrating my invention, I' have shown in the accompanying drawings one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although my invention is not limited to the precise arrangement and organization of the'instrumentalities as here 40 in shown and described.

Considerable difiiculty has been experienced in the trade With tin1er-brushes of the general type under consideration, for the reason that the tempered spring-steel arms carrying the contact-brushes are continuously breaking. I have discovered that by fluting or corrugating the arms, laterally, this difliculty is obviated. WVhile such fluted or corrugated arm may be attached to any one of several forms of sleeves now upon the market, I prefer to employ a sleeve as illustrated in the drawings a description of which will now be given. The sleeve comprises a I non-continuous member 10 formed from a Sistrip of metal bent to shape. One end of such strip of metal is bent barlkwardly as at 10. The opposite end has stamped therefrom a lip 11 bent outwardly upon an arc of a circle and reinforced by means of a fluted or ribbed effect 12. The extremity of this particular part of said sleeve is outwardly bent as at 13 Which With the slotted portion 1st forms a keeper for the spring arm about to be described. The arm is dcsig nated 15 and is formed upon an arc of a circle. One end of the arm is rigidly fixed to the part 10 of the sleeve, as by a screw and nut connection 16, and the free end thereof carries a brush 1? for contacting with the segments of a timer brush as is Well understood in the art. The arm passes under the part 13 of 'the sleeve, through slot l-l and is adapted to abut against the lip 11 which serves as a spring support for said arm. The arm itself is fluted or corrugated laterally as at 18. Such structure serves to add strength and flexibility to the arm and at the same time permits of a certain amount of flexibility, which together with the yielding nature of lip-'11 upon which the arm rests, contributes to the longevity of arm and reduces the possibility of breakage to a minimum.

It will now be apparent that I have devised a novel and useful construction which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description and While I have in the present instance shown and clescribed the preferred embodiment thereof '90 which has been found in practice to give satisfactory and reliable results, it is to be understood that the same is susceptible of modification in various particulars Without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Vhat I claim is 1. A timer brush comprising a sleeve and a spring arm carrying a contact brush eX- tended from said sleeve, said arm being fluted or corrugated.

2. A timer brush comprising a sleeve and a spring arm carrying a contact brush extended from said sleeve said armbeing fluted or corrugated laterally.

A timer brush comprising a non-continuous sleeve formed from a strip of metal bent to shape one end thereof having a rear- Wardly extended flange and the opposite end having a lip and a flange extended outwardly 1'10 therefrom there being a slotted portion between saidflzbnge and lip and a fluted 01' corrugated spring arm carrying a Contact brush fixed t0 the first mentioned "flange and extended beneath the last mentioned, flange and through said slot in abuttingrelzttion with said lip.

42. A timer brush comprising a noncontinuons sleeve formed from a strip of meta bent to shape ene end thei-eet having a x'earwanfiiy extended flange and the opposite end having a fluted or corrugated lip and a flange extended outwardiyntherefrom there being a slotted portion between Said flange and lip and a fluted or corrugated spring arm carrying a contact brush fixed to the first mentioned flange and extended beneath the Last mentioned flange and through said slot in abutting relation with said ii In testimony whereof, I have hereunto signed my name.

FRANK A.. GODLEY.

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