US1695148A

US1695148A - Electric signal-transmitting switch

Info

Publication number: US1695148A
Application number: US127908A
Authority: US
Inventors: Dewey L Harrison
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-08-07
Filing date: 1926-08-07
Publication date: 1928-12-11
Anticipated expiration: 1945-12-11

Description

Dec. 11, 1928.

D. L. HARRISON ELECTRIC SIGNAL TRANSMITTING swITcH Filed Aug. 7, 1926 2 Sheets-Sheet m ,s Tlillr M m J a Mr R 4 M U m. 6 d m A l 1 f W L. .Mw u /K V z 7 v \\4 .Y m7 1@ B wv wf y WE L ,7 6 @n J /1 Dec. l1, 1928.

D. l.. HARRlsoN 1595148 ELECTRIC SIGNAL TRANSMITTING SWITCH Filed Aug '7. 1926 2 Sheets-Sheet 2 ATTORNEYS Patented Dec. l1, 1928.

, UNITED STATES PATEN'Iy OFFICE. f

DEWEY L. HARRISON, OF FORT SMITIL'ARiKANSAS.

ELECTRIC SIGNAL-TRANSMITTING SWITCH.

Application filed August 7, 1926. Serial No. 127,908.

6 more particularly concerned with a. switchA structure by means of whichthe intended signal may be set in operation and kept 1n operation for a determined period whereupon it automatically is rendered inoperative.

Other objects and advantages will appear in the following spectication, reference being had to the accompanying drawlngs, 1n

which Figure 1 isa sectional view of the improved 15 switch. f n

Figure 2 is a cross section taken on the line 2-2 of Figure 1.

Figure 3 is a cross section taken on the line 3 3 of 1.

Figure 4 is a diagram 'of the electrical wirlng, Y

Figure 5 is a side elevation of enough of an automobile illustrating the manner of mountin the switch on the steering'post, n

igure 6 is an elevation of a direction 1ndicator in connection with which the switch mzybe used.

ference is made to Figures 1, 2 and which illustrate the switch. It comprises any suitable casing 1 which is evident y .subject to considerable change in form and material because it cannot readil be determined what either of these may ultimately be. In practice the casing may be mounted in any con,- veniently accessible place, and for the pur-` pose of illustrating its application to a direction indicator for motor vehicles, it is shown mounted upon the steering post 2 (Fig. 5) although, obviously, it may be mounted directly upon the steering wheel.`

Slots 3, 4 and 5 (Fi 1) permit the pro- 'ection ofthe hook-en of switch levers 6, and 8 which are pivotally mounted at 9 Within the casing and are provided for the purpose of closing individual electrical circuits and for settlng the timing mechanism of the switch in operation. 4

For-the first purpose each switch lever has a

contacter

10, 11 and 12. These must be insulated `from the switch levers, and this is preferably done by. making the switch levers f rof insulating material. The various levers have associated

contacts

13, 14; 15, 16; 17,18 (Fig. 3), the first one of each pairy being shorter than the other. The longer contact may remain in engagement with the leverv contacts 10, etc. and it is not until the lever yis moved down that engagement is made with both andan electrical circuitclosed. The

various contacts

13, 14, etc. are mounted upon an insulating strip 19 which also has slots 20 for the passage of the levers.

For the second purpose the switch levers yare joined by a connecting bar 21 having slots 22 receiving pins 23 of the levers. The bar has a notch 24 receiving ythe end of a springtrigger 25. This trigger is mounted at 26 upon the casing. It has a lug 27 entering a notch 28 in a disk 29. This disk is capable of being turned by any suitable spring clockwork, the illustration of which has been confined to the showing of a spring barrel 30 and suitable intermediate gearing 31, but which may be of any suitable standard form with suitable means for rewinding the spring such as the usual hand winding spindle with pawl and ratchet control. Depression of a switch lever will disengage the lug 27 permitting rotation of the disk 29 and keeping one of the three circuits involved closed until the notch 28 comes around into the original position whereupon the trigger 25 restores the depressed switch lever and opens the circuit.

Reference is now made to Figures 5 and 6. yIn Figure 6 the signalling device illustrated comprises the legend 31 reading Stop and the

legends

32 and 33 which read Turm but being associated with left and right aring 36 is preferably of green color. The casf ing 36 includes a bracket 39 by which the device is mounted upon a motor vehicle, for example the rear left fender.

The electrical Wiring isillustrated in Figure 4. Signalling devices in the form of

lamps

40, 41 and 42` provide for the illumination of the various `

legends

31, 32 and 33.r A battery B is the source of electric current. A wire 43 from one pole of the battery has

branches

44, 45 and 46 to the

various contacts

14 and 18. The

complementary contacts

13, 15 and 17 have

wires

47, 48 and 49 running to one side of the

respective lamps

42, 40 vand 41. The other sides of these lamps rare connected with the other poleof the batbeing; illustrative et' one manner ot moua tery by a Wire 50. The lamp 5l behind the g'reen glass 38 vvi l receive cu rent over an in dependent circuit (not shown).

Thev operation readily understood. lt has been explained that the switch casingl l may be mounted inanv convenient position, the showing et the mounting` oi ie casing` upon the steering post in l me? lv ,rare

lt will be evidentv bv a comparison ot Figures l and l that tl respective switch levers- 6 7 and S a re iden d with the ',rht turn, stop and lettturn sig als which the device is capable oi `giving.

Assume that the driver desires to ii'rdicate a right turn. He gives the hook-end of the switch lever G 4) a downward blow. Tliis'roclrsthc switch lever on its pivotand depresses the connectingr bar 2l. The other levers are not disturbed by virtue of the slot connections. rEhe downward blonv is transferred to the spring ti"k r the connection ot one end of the trig'cer with the notch 24 being noted.

Disenga nent 2S in the d e ollovvs. l work sets the diqlr 2) in ra, c, kn, and the lug frides upon the pcripheij at' the disk hold# ing' both the connecting' barZl and the switch lever G in the eprcsscd pc i The engagei ent ot the f acts 'i3' and 'let by the contact l0 upon the foregoing depression ot' the switch lever (E lights the lar-ip 42 (Fig. il) and indicates the desired right turn, the circuit being as follows: battery B, Wires Liland fili, contacts lei, l0 and 13, Wire il', lamp .12 aA l ivi 50 biel-. to the battery. As soonas the notch 2S r Vrns to registering position. in respect to lug 2T the latter drops in by virtue of the tension of the spring' trigger Q5, raising the connecting: ba' l and e spring cloclzrestoringthe switch lever 6 to the original positi therebyY automaticallj,v opening the toregonrej` circuit. The clockwork gearing mayv obviousli7 be ol' Ainv desired ratio so that the foregoing timing aii'orded bj: the disl Q9 may be of aniv duration. The depression of the sivitch levers is manual, but the inaintenanee et the signal in operation automaticA as is also the opening ot the signal circuit. To an example, the rearing may besuch that the lamp vill remain lighted approximatel oO seconds, this evi-dent being' the time iccuired ier a complete revolution of' the diL An operation similar to the one descl Jed ilollo'ws the deprsion ot either of the remaining switch levers 7 an" llfhile the construction a arrangement ot the improved switch that ot' a genera.ll \v preferred forni. obvion Lv modilicatirnis and changesmav he made without departing' from the spiritoi' the invention or the scopeiot the claims. y

QbviOuslv, the construction ot the switch is independent of the particular signalling s vstem and either one or a pluralft)- ot switch levers may be solectivelgv and sinn'xltaneou l operated.

nt o t the to circuit closing position and effective to hold the lever thus for a predetermined period and then move the lever to circuit broken position.

2. In an electric signal transmitting switch, an electrical circuit including a pair of spaced cont ets, a switch lever movable to and from circuit closingr positions between and in cnff( gement with the contacts. means including a motor driven control d set in motion by movement of the lever to the circuit closing position and a disk engaging, lever-connected member 'tor holding the lever thus and the circuit closed for a predetermined period, said member being operative at the expiration of said period to reverselv mo ve the lever troni circuit closing position and to arrest movement of the disk. v

3. An electric switch comprising a plurality of independently opera le switch levers, each having associated therewith a pair of spaced contacts and means including a motor driven rotatable control member and a connection therefrom common to said pl uralitl,Y of levers for holding selected levers stationary in circuit closing position between said spaced contacts `tor a predetermined period, and for thereafter automatically moving said lever to open the circuit and arresting rotation oit said control member.

4;. An electric switch comprising a plurality of independentli1 operable switch levers with each lever having associated therewith a pair ol spaced contacts in an electrical circuit between and in engagement with ivhieh it is movable, power driven rotatable element having a peripheral depression, a springr pressed trigger havingl a lug normally tending to occupy1 the depression and arrest rotation oit said element and riding on the peripher)V of id element ivhen the latter is released and rotates, and a mot-ion transmitting member common to said pluralityv ot levers and connecting said levers with said trigger to displace its lu;r from said depresn upon manualhv effected movement of a selected lever to circuit closing position, therebv permitting said rotatable element through the tri weer and its connected motiontransmittingr member to hold the selected lever stationary in circuit closing position until the lug again enters the depression, the trigger then through its spring acting through theV motion transmitting,r member w t is:

automatically and reversely to move the lever to open circuit position. n

5. A switch comprising a plurality of independently operable levers, a disk having a 5 depression, means to rotate the disk, a. spring trigger having a lug seated in the depression preventing rotation ra motion transmitting bar common to and having pin and slot connection with each of the levers ermitting 10 movement of selected levers to a circuit closing osition Without disturbing the others, said ar having a notch therein to receive the trigger and operatin when moved by circuit closing movement o a selected lever to displace the lug and permit rotation of the disk, said lug riding on the periphery of the disk to hold said bar with said lever stationary in the circuit closing position until registration of the depression With the lug.

DEWEY L. HARRISON.