US1012721A - Time-switch. - Google Patents

Description

F1 SCHIID, JR.

TIME SWITCH. APPLICATION FILED AEI-Gr.10, 1911. 1,012,721. I Patented 1166.26, 1911.

2 SHEETS-SHEET 1.

l v z 1 E F. SCHMID, JR. TIME SWITCH. APPLICATION FILED AUG.` 1o, 1911.

1,012,721. Patented 116112111911.

2 SHEETS-SHEET 2.

Vl, l I l i a specification.

FREDERICK SCHMID, JR., OF PHILADELPHIA, PENNSYLVANIA.

TIME-SWITCH.

Specification of Letters Patent.

ratenteafne. 2c, 1911.

Application `filed August 10, 1911. Serial No. 643,296.

To all whom 'it may concern:

Be it known that I, FREDERICK SoHuID, Jr., a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Time-Switches, of which the following is My invention relates to improvements in time switches, the object ofthe invention being to provide improved mechanism operated by clock work to release an electric switch, and permit the latter to be thrown to open position.

A further object is to provide an improved electric switch with clock controlled mecha.

nism for holding the switch in normal closed position, andoprovide the switch with springs which ,throw the switch to open position at a pre-determined time.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims. V

4In the accompanying drawings: Figure 1, is a view in front Velevation illustrating my improvements. Fig. 2, is a rear view of Fig. l. Fig. 3, is a view in vertical section on the line 3-3 f Fig. 2. Fig. 4, is a view in vertical section on theline 4-4 of Fig. 2. Fig. 5, is a view in horizontal section on the line' 5-5 of Fig. 2. Fig. 6, is an enlarged view in horizontal section on the line 6-6 of Fig. 2. Fig. 7, is an enlarged detail view showing the connection between the lever 54 and the arbor 44, and Fig. 8, is a fragmentary detail view illustrating the connection between the gears 17 and the switch arm 11.

1, represents a supporting plate having an opening 2 therein, in whicha clock 3 is mounted, the face of the clock being exposed on the outer face of plate 1, and the clock "works 4 located back of the plate 1. A

block 5 of-insulating material is fixed to the outer face of plate 1, and supports my improved switch 6 which will be hereinafter described. Beside the block 5, a rotary dial 7 is located, and mounted to turn in a casing 8. This dial is secured upon a shaft 35,

which projects through plate 1, and contains a scale on its outer edge registering with afixed pointer 10, and this scale numbered, said numbers indicating minutes as will hereinafter appear.

The switch 6 above referred to, comprises parallel contactarms 11, which are pivotally mounted in brackets 12, and are connected by the ordinary cross bar13 to which a handle 14 is secured.

15, represent the xed contacts on block 5, against which contacts 16 engage. These contacts 16 are in the form of flatn levers having parallel ears .17 located against the opposite sides of the arms 1.1, and connected by pins 18 with said arms, said pins projected through slots 19 in the arms, so as to allow the contacts 16 a certain amount of longitudinal movement. VThese ears 17 are provided with lugs 20 which are connected by coiled springs 21 at both sides of the arms with pins 22 near thenupper ends of the arms. These springs tend always to swing the contact 16 on the pins 18, and hence tend to throw the switch to open position. As this switch is positioned vertically when it is thrown out of contact, it will fall by gravity. To cushion this fall, grooved spring extensions 23 are provided on the brackets 12, and these extensions also prevent the arms from engaging the ordinary fuse pieces 24.

On the crosssfbar 13 of the switch 6, a toothed segmenft' 25' is fixed, and this segment is` concentric with the path of said switch, and is adapted to move into contact with a notched segment 26 -on the end of an arm 27 projecting through plate 1, and pivoted on a pin 28. The inner end of the arm 27 i's pivotally connected by a rod 30 with a crank disk 29. This disk 29 is secured upon a shaft 31 mounted in bearings 32 on the rear face of plate 1. On shaft 31, a segmental disk 33 is fixed, and is adapted to beheld by means of a locking disk 34 which is supported upon a short shaft 35 mounted in a bracket 36 on the rear face of plate 1', and located at right angles to the segmental disk33. On the shaft 35, a gear wheel 37 is secured, and meshes with a vertically movable rack bar 38. This rack bar 38 is guided by fixed pins 39, and set screws 40 located in grooves 41' in the opposite faces of said rack bar, and said. bar held in its operative relationship by means of blocks 42 in'bracket 36, and a bracket 43, located below thebracket-36. This bracket 43, to-i arbor 44. On this arbor 44, a relatively small pinion 45 is secured, and meshes with a gear 46 driven by the clock mechahism abovey described. On this arbor 44, a gear wheel 47 is loosely mounted, but frictionally held to the shaft by means of a spring 48. This spring 48 comprises a plurality of arms as seen most clearly in Fig. 7, which bear against-Whe face of gear 47,I and hold the latter against a shoulder on the arbor. In other words, this arbor 44 is made with two diameters as seen most clearly in`=Fi02 3, so that a shoulder is formed against which the gear 47 is held by the spring 48. This gear 47 meshes nwithvthe rack 38, and is adapted to be engaged by a pinion 49-ona shaft 50. This shaft 50 is connected to a spring 51, which normally holds the pinion 49 out of meshwith gear 47, and also senves to tightly close the opening through which said shaft 50 projects to exclude dust and dirt from the works in back of the plate. y

It is to be understood that any suitable form of cover (not shown) may be provided to inclose the working parts on the back of the plate 1. Shaft 50 projects be'- yond the outer face of plate 1, and is provided with a knob 51aL to facilitate the movement of the, shaft.

The disk 34 above referred to is provided with a recess 52 of the proper size for the passage of a finger 53 on segmental disk 33, and when the dial 7 is in zero position, this recess 52 will register with the finger 53. When in any other position, the recess will not register with the finger, and the latter will be held against the face of disk 34.

A spring lever 54 is pivotally supported on a pin 55 secured :to the rear fahe of plate 1, and one end of this lever is bifurcated as shown at 56, and projects into an annular groove 57 in arbor 44, so that this lever serves to move the arbor and move gear 45 into out of mesh with the gear 46. It must be borne in mind that this lever 54 moves at both ends toward and away from plate 1, rand while the part 54 is a pivotpin, the lever fulcrums on this pin but moves in a direction parallel to the pin. The other end of lever 54 is provided with a bifurcated extension 58 to receive an eccentric 59 fixed to shaft 31, so that when this shaft 31 is turned, the lever 54 will be moved either to throw the gear 45 into or out of mesh with gear 46.

The operation is as follows: When the dial is at zero, the-switch may be closed. When the switch is closed, the segments 25 and 26 will cause the arm 27 to swing upwardly, and through the medium of rod 30, crank disk 29 and shaft 31, will be turned in a direction to move finger 53 to a position back of disk 34. While the switch is held in this closed osition, knob 51 is grasped and pushed inwardly until the pinion 49 meshes with the gear 47. The knob is then 4turned to turn the dial 7, through the medium of gear 47,y rack bar 38, gear 37, and shaft 35, so as to set the dial to \any position desired in accordance with the time the switch is to remain closed. This movement of shaft 35 causes the disk 34 to, turn to move its recess 52 away from the finger 53, `which latter is then held against the back face of said disk 34. The turning of shaft 3, through the medium of lever 54moves the arbor 44 longitudinally, and moves pinion l45 into mesh with gear 46. This lever 54 contains sufficient inherent elasticity to allow for the pinion engaging the` face ofthe teeth 46. In other words, it is possible that when the arbor 44 is moved, the teeth of pinion 45 will not register with the teeth of gear 46. The spring lever 54 will therefore hold the pinion against the face of disk 46 until the teeth are in register when the pinion 45 will spring into place. The parts will then be in the position shown in the drawings, and the clock work will be turning gear 46 and pinion 45. As the latter turns, gear 47 will draw rack bar 36 downward, and through the medium ofy ear 37 and shaft 35, turn disk 34. When the recess 52 moves into register with the finger 53, the springs 21 will be permitted to act, and they will throw the switch to open position and the arm 27 will fall, turning shaft 31 and through the medium of lever 54, draw the pinion 45 out of mesh with the clock work. This is importantbecause the clock is not required to do any work other than its normal work of keeping time, except when the switch is in closed position.

,j Various slight changes might be made in tlje general form and arrangement of partsl described without departing from my invention and hence I do not limit myself to the4 precise details set forth, but consider myselfv at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

rHaving thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a time switch, the combination with an electric switch, a spring exerting pres` sure to open the switch, of a shaft, means connected with the shaft for holding the switch in closed position, a rotary disk having a recess therein, clockf mechanism control/ling theV movement of said disk, and a finger on saidl shaftmovablethrough'the recess in the disk, substantially as described.

2. In a time switch, the combination with an electric switch, a spring exerting pressure to open the switch, of a shaft, means connected lwith the shaft for holding the switch in closed position, a rotary disk having a recess therein, clock mechanism controlling the movement of said Idisk, a' finger on said shaft movable through the recess in the disk, and means operated by the turning of`the shaft when the switch is closed for throwing the clock mechanism into operation, substantially as described.

3. In a time switch, the combination with an electric switch, a spring exerting pressure to open the switch, of a shaft, a pivoted arm, a toothed segment on said arm, a toothed segment on the switch constructed to engage the arm segment and move the arm, a crank on said shaft, a rod connecting the crank and arm, a finger on said shaft, a recessed disk constructed to hold the finger and the shaft against movement, and a clock work controlling the movement of the disk, substantially as described.

, 4. In a time switch, the combination with an electric switch, a spring exerting pressure to open the switch, of a shaft, a pivoted arm, a toothed segment on said arm, a toothed segment on the switch constructed to engage the arm segment and move the arm, a crank on said shaft, a rod connecting the crank and arm, a finger on said shaft, a recessed disk constructed to hold t-he finger and the shaft against movement, means for setting the disk so that its movement will be regulated for a pre-determined length of time, and a clock work controlling the movement of the disk,` substantially as described.

5. In a time switch, the combination with an electric switch, a spring exerting pressure to open the switch, of a shaft, a pivoted arm, a toothed segment on said arm, a toothed segment on the switch constructed to engage the arm segment and move the arm, a. crank on said shaft, a rod connecting the crank and arm, a finger on said Shaft, a recessed disk constructed to hold the finger and t-he shaft against movement, a shaft supporting said disk, a dial on said lastmentioned shaft, a pointer registering with said dial, 'and a clock work controlling the movement'in one direction of said disk and dial, substantially as described.

6. In a time switch, the combination with an elect-ric switch, a spring exerting pressure to open t-he switch, of a shaft, a pivoted arm, a toothed segment on said arm, a toothed segment on the switch constructed to engage the arm segment and move the arm, a crank on said shaft, a rod connecting the crank and arm, a finger on said shaft, a recessed diskV constructed to hold the finger and the shaft against movement, a shaft supporting said disk, a dial on said lastmentionedshaft, a pointer registering with said dial, a gear on said last-mentioned shaft, a clock work, a gear driven by said clock work, and a rack bar meshing with said last-mentioned gears, substantially as described.'

7 In a time switch, the combination with a supporting plate having openings therein, a clock mounted in one of said openings, an electric switch supported on said plate, springs tending to open said switch, and a rotary dial mounted against the outer face of said plate, of a shaft supported against the inner face of the plate, a crank on said shaft, a pivoted arm moved by the switch, a link connecting said arm and crank, a finger on said shaft, a dial shaft to which the dial is secured, said d ial shaft projecting through the plate, a recessed disk on the inner end of said dial shaft, a finger on the first-mentioned shaft adapted to move through the recess in said disk, means for moving the dial and recessed disk so that the recess in the disk is outl of register with the finger, and means connecting the clock and the dial shaft, whereby the clock serves to move said dial shaft and move the recessed portion of the disk into register with the finger, substantially as described.

8. In a time switch, the combination with a supporting plate having openings therein, a clock mounted in one of said openings, an electric switch supported on said plate, springs tending to open said switch, and a rotary dial mounted against the outer face of said plate, of a shaft supported against the inner face of the plate, a crank on said shaft, a pivoted arm moved by the switch, a link connecting said arm and crank, aiinger on said shaft, a dial .shaftr to which the dial is secured, said dial shaft projecting through the plate, a recessed disk on t-he inner end of said dial shaft, a finger on the first-mentioned shaft adapted to move through the recess in said disk, a clock driven gear, a gear on the dial shaft, and a rack bar connecting said gears, substantially as described.

9. In a time switch, the combination with a supporting plate having openings therein, a clock mounted in one of said openings, an electric switch supported on said plate, springs tending to .open said switch, and a rotary dial mounted against the outer face of said plate, of a shaft supported against the inner face of the plate, a crank on said shaft, a pivoted arm moved by the switch, a link connecting said arm and crank, a finger on said shaft, a dial shaft to which the dial is secured, said dial shaft projecting through the plate, a recessed disk on the inner end of said dial shaft, a finger on the first-mentioned shaft adapted to move through the recess in said disk, a clock driven gear, a gear on the dial shaft, and a rack bar connecting said gears, a spring secured to thecinner face of said plate, a short shaft projecting through the plate and mounted in said spring, a pinion on said last-mentioned shaft adapted to be moved into mesh with the clock driven gear, and a knob on the outer end of said 10. ln a time switch, the combination with a supporting plate having openings j therein, a clock mounted inO one of said openings, anelectric switch supported on said plate, springs tending to open said switch, and a rotary dial mounted against V to open the switch, of a shaft, means conthe outer face of said plate, of a shaft supported againstthe inner face of the plate, a crank on said shaft, a pivoted arm moved by the switch, a link connecting said arm and crank, a finger on said shaft, a dial shaft to which the dial is "secured, said dial shaft projecting through the plate, a ref therein, j fixed contacts, movable contacts cessed disk on the inner end of said dial shaft, a finger on the first-mentioned shaft adapted to move through the recess in said disk, a clock driven gear, a gear on the' dial f lsaid arms, whereby the tension of said shaft, a rack bar connecting said gears, a spring secured to the inner face of sald plate, a 4short shaft projecting through the ystantially as described.

plate and mounted in said sprmg, a pinion on said last-mentioned shaft adapted to be f moved intomesh with the clock. driven gear, v

and a knob on the outer end of Hsaid lastmentioned shaft, whereby the same and the dial may be set, an arbor on which said clock driven gear has frictional engagement, a small gear fixed to said arbor, and normally out of mesh with the' lclock work, and means operated by the lirst mentioned shaft for moving said arbor to 'position said small gear into mesh with the clock work, substantially as described.

11. ln a time switch, the combination with a 4supporting .plate having openings therein, a clock mounted in one of said openings, an aelectric vswitch supported on said plate, springs tending to open said switch, and a rotary dial mounted against the outer fac'e'ofsaid plate, of a shaft sup-W ported against the inner face of the plate,

' shaft to which the dial is secured, said dial shaft projecting through the plate, a recessed disk on the inner end of said dial shaft, a finger on the first-mentioned shaft adapted to move. throughll the recess in said disk, a clock driven gear, a gear n the dial shaft, a rack kbar connecting said gears, a

spring' secured to the inner face of j said plate', a short shaft projecting through the plate andmounted in said spring, on said last-mentioned`shaft adapted to be moved into mesh with the clock driven gear, a knob on the outer end yof said last-mentioned shaft, whereby the same and the dial may beset, an arbor on which said clock.

drivenn gear has 'frictional engagement, a small gear fixed to said`arbor, and normally out of mesh with the clock work, a spring a pinion wherein, a forked end on one end of said lever mounted in said groove, a cam .on said first-mentioned shaft, and a recessed extension on said. spring lever in which said cam is located, substantially as described.

12. lin a time switch, the combination with an electric switch, a," spring exerting pressure nected with the shaft for holding the switch in closed position, and clock mechanism conl trollingthe movement of the switch holding having perforated ears at their ends straddling said arms, pins through said ears and slots, and springs connecting said ears with springs tends to pivot the movable contacts and throw the switch to open position, sub- 13. lin a time switch, the combination with fan electric switch, a spring exerting pressure 5to opentthe switch, of a shaft, a pivoted arm, said arm and switch constructed so that the^ yclosing of the switch moves the arm, a shaft, vmeans connecting the arm and shaft whereby the movement of the arm turns the shaft, a linger on said shaft, a recessed disk const-ructed to hold the linger and shaft against movement to maintain Athe switch in closed position, a clock work controlling the movement of the disk, said switch comprising Vtwo pivoted parallel arms having slots K segment on the switch constructed to therein, fixed contacts, 1movable contacts having perforated .ears at their endsstraddling said arms, pins through said ears and slots, and springs connecting said ears with said arms whereby the tension of said springs tends to pivot the movable contacts and throw the switch to open position, substantially as described.

' 14.' In a time switcl1the combination with an electric switch, a spring exerting pressure to open the switch, of a shaft, a pivoted arm, a toothed segment on said arm, a toothed engage the arm segment and vmove the arm, a crank on said shaft, a rod connecting the crank and arm, aiinger on said shaft, a'recessed disk constructed to hold the finger and the shaft against movement, a clock work conntrolling the movement of the disk, said switch comprising two pivoted parallel arms having slots therein, fixed contacts, movable,

contacts ha ing perforated ears attheir'4 ends straddling said arms, pins through said ears and slots, andspringsconnecting said ears with said arms, whereby the tension'of said springs tends to pivot the movable contacts andthrow the switch to open position,

V substantially as described.

15. Ina time switch, the combination with an electric switch, a spring exerting pressure to open the switch, of a shaft, a pivoted arm, a toothed se ment on said arm, a toothed segment on te switch constructed to engage the arm segment and move the arm, a crank on said shaft, a rod connecting the crank and arm,a finger on said shaft, a recessed disk constructed to hold the finger and the shaft against movement, a clock work conl trolling the movement of the disk, said switch comprising two pivoted parallel arms having slots therein, fixed contacts, movable contacts havin perforatedears at their ends f straddling sai arms, pins through said ears and slots, and springs connecting said ears with said arms, whereby the tension of said springs tends" to pivot t-he movable contacts and throw the switch to open position, and

grooved stops adapted to be engaged by 20 FREDERICK SOHMID, JR.

Witnesses:

C. R. ZIEQLER, CHAs. E. Po'r'rs.

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