US1568298A - Wiper - Google Patents

Description

Jan. 5 1'926.

J. A. SOMERVILLE WIPER FiledDeG, 18, 1924 Patented Jan. 5,' 1926.

UNITED STATES.

v JOSEPH A.. SOMERVILLE, OF ST. LOUIS, MISSOURI.

WIPER.

Application filed December 18, 1924. SeralrNo. 756,679.

To all 'zo/0m t 01mg/ concern.'

Be it known that I, JOSEPH A. SoMnr.- VILLE, a citizen ot' the United States, residing at the city of St. Louis, in the'Stat-e of Missouri, have invented certain new and useful Improvements in W'ipers, of which the following is a specification.`

This invention relates to wipers, and more particularly to power driven wipers for the window panes of street cars 'and the like, whereby the outer side of the pane, which is ordinarily inconveniently accessible for cleaning from the inside of the car, may be readily cleanedv at desired intervals by mere 1 momentary.pressure on a manually operated switch arranged within convenient reach of the motorman.

The advantages above set forth and others incident to the invention will be best understood and appreciated from the following description of the preferred form of this invention, selected from divers embodiments for the purpose of illustration.

In the accompanying drawings forming part of this specification, in which like numbers of reference denote like they occur,

Figure 1 is a fragmentary elevation of the outside of a car vestibule, showing the wiper of this invention applied to the window thereof;

Figure 2 is a sectional view, taken on the line 2 2 in Figure 1;

parts wherever Figure 3 is a transverse sectional viewV through the wiper proper, taken on the line 3 3 in Figure 1;

Figure 4 is a detail sectional view of the operating switch, taken on the line 4-4 in Figure 1; and

Figure 5 is a transverse sectional view through the solenoid and guide casing therefor, taken on the line 5--5 in Figure 1.

A window sash 1, including window pane 2, is slidable, for the purpose of opening or closing the window, in the usual manner in the vestibule frame 3. On the outer side 4 of the frame 3 are mounted at either side of the window pane 2, the guides 5, formed of non-magnetic material, and preferably extending from the roof to the floor of the car. The guides 5 are preferably tubular in form, and preferably have integral therewith or aflixed thereto in any suitable manner the flanges 6, whereby the tubes 5 may be attached to the frame 3 by screws or other suitable fastening means T.

Solenoids 8 and 9 are secured in 'the upper ends of their respective tubes` 5 preferably by screws 10, and solenoids 11 and 12 are likewise secured in the lower ends of their respective tubes. Plungers 13 are common to the upper and lower solenoids of each guide 5, and have affixed thereto intermedirate their ends the collars or slides 14, which latter are preferably retained in position on the plungers 13 by the screw studs 15, screwthreading laterally into the slides 14 and seating against the the plungers 13. Tubes 5 are slotted at 16 between the upper and lower magnets to permit the passage of the studs 15, which extend from the ends of the wiper holder 17. lViper holder 17 preferably tubular in form, and slitted at 18 on the side thereof facing the pane 2. The tube 17 is normally under an elastic strain which tends to close the slit 18, and by reason thereof securely holds wiping strip 19 in the said slit. liping strip 19 may be of any suitable material, but rubber is deemed preferable. The ends of tube 17 embrace the studs 15, and are secured thereto preferably by transverse bolts 20.

A switch 21, comprising button or plunger 22, casing 23, blade 24, and contacts and 26 is inserted in the inner side of the frame 3 at a point within convenient reach of the motorman, preferably adjacent the pane at a point intermediate the vertical dimension thereof. Wires 27 and 28 are connected to the source of electric current, wire 27 leading to resilient blade 24, which normally impinges against stop or contact 25, from whence the current is conducted through wire 29 to solenoid 9, from thence by wire 30 to solenoid 8, and from thence by wire 31 back to wire 28. Contact 26, wire 32, solenoid 12, wire 33, solenoid 11, and wire 34 constitute the alternative circuit through which the current passes when plungers or button 22 is depressed.

With current supplied through wires 27 and 28, the wiper is normally held in the elevated position shown in Figure 1, the

plungers 13 being drawn up into their respective upper solenoids 8 and 9. Should the vision of the motorman become obscured by the accumulation of moisture and other deposits on the outside of the pane 2, the window may be readily cleaned with a minimum of effort by merely pressing` the button 22. whereby blade 24 is depressed from its normal position and into contact with stud 25, cle-energizing the uppersolenoids 8 and 9, and supplying the current to the lower pair ot solenoids 11 and 12 instead, whereb'r plungers 13 are then attracted byl and descend into the lower solenoids 11 and 12 carrying with them wiper 17. llVhen button is released, blade 24E springs back to its normal position, discharging lower solenoids 11 and 12 and recharging upper solenoids 8 and 9, causing wiper 17 to ascend to its normal elevated initial position. rlhus every time the switch is operated` wiper 17 completes one complete descending. stroke and one complete ascending stroke. The lower magnets 11 and 12 may be designed with fewer ampere-turns than the upper magnets 8 and 9, since the weight ofthe wiper andV associated` plungers is favorable to the descent ofthe wiper.

I claim:

1. In a window'wiper, a pair ot laterally spaced' guide tubes respectively slotted ,ter a portion ot their lengthto provide guide openings, al plunger within each guide tube adapted to slide from one end to the other thereof, a slidable collar on each plunger,

pair of studs, each of said studs having a screw-threaded shank engaged in a screwthreaded` opening in a collar and seating;I against the plunger for locking the said collar thereon, a wiping strip, a holder therefor having its opposite ends embracing the said studs, and removable transverse bolts securing the said ends ot the holder to the said studs.

2. ln a window wiper, a pair of spaced guides, slides constrained to move within the said guides, a wiping strip, a spring-nietal tube slotted on one side to accommodate the said wiping strip and normally under an elastic strain to close the slotted side upon the strip, a connecting stud between each slide and the adj aceut end o the tube, each of the said studs having one of its ends in screw-threaded engagement with the slide and the other end embraced b v the tube, and

means for releasablxT locking the said e1nbraced ends of the said studs to the said tube.

In testimony whereoic l hereunto aliir: my signature.

JOSEPH A. SOMEBVILLE.

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