US1709932A - Windshield wiper - Google Patents

Description

April 23,1929. J." A. CARSON I 7 09,932

WINDSHIELD WIPER Filed March 16. 1926 2 Sheets-Sheet l James-A. .Carsdn wj iffM WINDSHIELD WIPER Filed Mar ch 16. 1926 2 Sheets-Sheet 2 H FEE-4" Illllllllllllllllllilll-ll Jam ea 1-1.. Carson i Patented Apr. 23, 192%.

STATE Ma a r; on. if

A. CARSON, OF ILLAHEE, WASHINGTON.

wrnnsnrnnn jwlrnnp Application filed March re, 1926. Serial: no. 95,014.

My invention relates to means employed for wiping the surface'of glass in windows and the like and has een especially designed for wiping rain and moisture from windshield glass. i

The object of my invention is to provide a mechanism which will effectively handle a swipe bar for such purposes and one which is of a cheap, dependable, and durable conied have been shown in the accompanying drawings-and these will be hereinafter described. The'especial novel features'upon which patent is desired will be defined in the claims. Figure 1 is a face view of one form of my device shown in association with a portion ofa windshield.

side, of the base frame and the parts thereon. Figure 3 is a section taken on the'plane 33 as indicated'on Figure 2. p

Figures 4:, 5, and 6 are face views of the base or frame and associated parts showing modified constructions, a covering or face i late of the base bein removed in each case.

Figure 7 a section on the line 7 7 of Figure 6. j

()ne ofthe characteristic features of my invention is the use of a straight line reciprocative movement and another is theuse of a series of pivoted levers constrained to move in a symmetrical relation, for handling and controlling the swipe bar. Associated with such parts are the specific and novel mechanisms employed to actuate said levers and to insure their symmetrical movement or along a margin of the glass which is to be kept clear of water. The most obvious and effective position upon or about a windshield is upon the upper frame bar of the windshield. This is the position chosen for the accompanying illustration and the forms of construe tions in which my invention may be embed-- Figure 2 is a face view, from the opposite.

My device is designed for mounting upon.

position: which will be hereinafter V specifically described. It is, however, to be undere stood that mounting it in other positions is contemplated when and whereversuchpo sition seems advisable.

The operating parts are designed to be) mounted in a self contained manner upon a base or frame 1 which conveniently con-- tains spaced-apart plates, as 10, 11, and 12,.

between, and supported upon Which, are certain of the operating members.

The swipe bar 23 carries an ear, or ears, 30, upon which are pivoted by one end, swinging arms 20, which at their other ends are pivotally connected with other swinging armsQ. The arms 2, which for convenience Iwill call thefirst pair, are pivoted at 18, 3, upon the base or frame 1, at points whichare separated while yet adjacent. These arms or bars 2 extend beyond their pivots, such extended ends being engaged byanactuating member, the; construction and operation of swing the arms, and alsoinsure equal and symmetrical angular swing as between the two arms. 7 v r In theconstruction shown in Figures 1, 2,

which parts being such as will effectively 1 and 3, the extensionsof arms 2 beyond their pivots'have laterally projecting pins 21 1 which enter slots 40 in a yoke 4;, which is mounted inthe base orframe so as to be confined to recip'rocation ina definite path and. to prevent anyrocking or pivoting ac tion. The mannershown forsecuring this is to provide the yoke or plate 4 with two ears 41, which are bent at right angles, and

.pass through a guide slot 14 inplate 11..

The lugs or ears 41 are spaced apart and receive between them one end 50 of a bell crank lever 5, pivoted at 51 upon the base.

To the other end 52 is connected .9. wire or rod 53 by which the lever may be swung when desired from a distantpoint, either through the means of hand or power operated devices. A spring 54- may be used to return the parts to their normal position, which is with the swipe bar 3 raised close to the base 1-. i

I have found the slot and pin a con venient means for connecting the operating member with the first pair of swinging arms 2. The slots may be in the connecting member, as shown in Figure 1., orin the arms, as shown in Figure 4. In the latter'case, the slots 22 are in the extensions of the arms beyond their pivots 13. Ineither case, I

prefer that the slot be curved, as is shown both In Figure 1 and in Figure 4. I

lV here the slot is inthe arms, as lnFig- 'ure 4, the intermediate member connecting the actuating lever 5 with the arms, becomes; a pin, 55, secured in, the arm 50, and directly entering the slots 22; c

In the construction shown in Figure 5, the ends of thearms 2 are bent, and the endSO of the-actuating lever iswidened and pro- .vided with tworolle'rs 56, which engage op"- positef sides of thecurved or bent ends 23.

In the form shown in Figure 6', the ad- I jacent ends of arms 2 are provided with a arate statement thereof.

toOthed arc, and between them is a rack bar 6,'mesh1ng with both, and mounted toslide in guides formed in, or carried by, the frame.

The rack bar. 6' is shown ashaving a pin 60,

which enters aslot 57 in end 50 of the act-11 ating lever 5. i

T0 insure true movement ofthe swipe bar '3, means to insure its parallelpositionshould beprovided; Such means as illustrated con sists in providing. the ends oi v these arms with intermeshing teeth 26.

i To return the swipebar to its uppermost position, the use of a spring is desirable.

Preferably this should be contained in the. assembly carried upon .the frame 1, which is done by a spring such as 54 shown. Va

rious other types of springs and various Hide the above description has been worded'to specifically apply to the use of the device upon the windshield of an automobile, this specific character is due solely to the tact that the drawings show such an application. is equally applicable to the windows of street cars, locomotives, and in fact, all windows which are exposed'to rain or moisturewhich tends to cloud vision therethrough. =It is therefore to be understood that, al-

though the claims may refer to the invention as a wind shield swipe, orwiper, they are It is evident that the device not to be interpreted as limited to this use alone, but to cover the device defined as used in any connection and for any purposeto which it is applicable;

What I claim as my invention is:

1. A window wiper comprising a base member, two arms'adjacently pivoted upon said base, two other arms pivoted one to the end of each of the firstpair of arms, a wiper member pivoted upon the other ends o-t-the second pair of arms, a yoke havlng vertical guiding. engagement; with the base,and an operating engagement with the other ends of the first pair of arms.

2. A. window wiper comprising a; base member adapted to be secured relative to. the window, two arms ad acently pivoted upon said base, two other arms pivoted one to the swingingcndofqcachotthe first pair of arms, wiper member pivoted-uponthe other ends ofthe second-pair of arms, a yoke having-operatin engagement with the adjacentyends. of thefirst pair of arms, said yoke and. the base member having guidingen a ement 'reventingrockih of the oke.

o b 0 b 3. A window wiper-comprising a base, two

arms adjacently pivoted upon the base, a wiper member conneetedrto the swing ng arms to beaoperated thereby, a member hav- 311g operative engagement with the adjacent ends of said arms, and guided for moven ent so to secure an equal and symmetricalan gular swinging of the arms, and a lever for actuating, said latter memben t. A window wiper comprising a base, two arms adj acen'tly pivoted'upon said base, a second pair, of arms pivoted upon the swinging ends of the first pair-otarins, a

wiper bar carried by the other ends ot'the secondpair o1 arms, the outer ends of said second pair of arms having intermeshing teeth insuring. a continuous symmetrical swingingthereor", an operating lever-pivoted upon the base,-the base having a transversely positioned guide, and a connecting member between the operating lever and'the swinging arms having engagement with the said.

guide to control its direction of movement and position, said connecting member having a sliding engagement with the first pair of swinging arms. I I V Signed at Seattle, King. County, Washington, this 8th dayof March, 1926.

JAMES A. CARSON

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