Патент USA US2112044код для вставки
March 22, 1938. . , R. PUDELKO MOTOR' DRIVEN SWITCH Filed OCT.. 18, 1934 2,112,044 Patented Mar. 22, 1938 ‘ " " l ‘ UNITED STATES vPATENTOFFICE MOTOR DRIVEN SWITCH Riccard Pudelko, Zug, Switzerland, assignor to Landis & Gyr, A.-G., a corporation ofV Swit zerland Application October 18, 1934, Serial No. 748,825 In Switzerland October 25, 1933 3 Claims. (Cl. 20o-_153) The present invention relates to motor-driven 8 which support a plate 9 carrying the switch 5 switching apparatus, and more particularly to a operating motor, the switch contacts and the motor-driven switch particularly adapted for switch-operating caInS'- ASernbOdied, the Switch use in connection with electrically-heated boilers ~c0rnpríses a pair 0f @Ontaets l0 and Il, ccntact for heating systems. ‘ l0 being mounted on a block of insulating mate- Objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom, or may be learned by practice with the invention, the same being realized 10 and attained by means of the instrumentalities and combinations pointed out in the appended claims. ` ' The accompanying drawing, referred to herein and constituting a part hereof, illustrates one . embodiment of the invention, and together with `the description, serve to explain the principles i . . .Figure 1 is a, side elevation of a typical embodi.. ment illustrative of the present invention, with the cover and certain other parts being shown 'Z'r in section, and o ’ I4 at the rear ofthe block. . 10 . Contact Il is resiliently and movably mounted by a spring I5 secured to the block l2 by means The invention consists in the novel parts, construction, arrangements, combinationsv and im15 provements herein shown and described. of the invention. v 20 Of the drawing: 5 . rial i2 Which iS piVOtally Suppcrted t0 the plate 9 by means of pivot pin I3V passing through the lower portion of the block, andv contact Ill extends rearwardly t0y form a threaded terminal Of Screw l5, the rear end 0f the Screw forming a terminal i? at the rear 0f the block i2. The Spring i5 is of a general U-Shape, and itS upper 15 free end is attached to a rigid strapV I8 carrying a cam rOllcr i9. When it iS desired t0 prOVîde a tWO-pcle Switchl a duplicate Sct 0f contacts i0 and' || may be mounted to one side of the first pair of contacts 20 on the block i 2, but inasmuch as these are dupli cates, Vthey are not described in detail but are Shown in the drawing. Motor means are provided fOr Operating the switching apparatus and for this purpose the 25 Figure 2 is a front elevation of the embodiment shown in Figure 1 with the cover removed. magnet 2|) of a small Ferraris motor is mounted on the rear face of plate 9 and operates to rotate The present invention has for its object the motor discZl. Motor disc 2l is rotatably mounted provision of a novel and improved motor-driven by means 0f a Shaft 22 in a jeWeled bearing 23 à switching apparatus, particularly adapted for the contro1 of power supplied to heating systems. Another object of the present invention is the provision of a motor-driven switching apparatus adapted to carry out a normal switching cycle, and provided with means for interrupting or 35 modifying the normal action of the apparatus. The present invention is particularly adapted for controlling the supply of electrical energy to electrically heated boilers where the power is 40 supplied during _off-peak periods at low rates and the water so heated is distributed for the heating of the house or other room as needed during the and a journal 24. Shaft 22 carries a pinion 25 30 meshing with gear 26 which is mounted on shaft 2l to drive shaft 21 through a friction clutch 28 and against the tenSiOn 0f Spring 29 which has one end 39 fixed to the shaft 2l about which Spring 29 is coiled and its other end 3| ñxed to 35 a plate 0I’ bracket 32 fìXed t0 the plate 9. An abutment» 33 iS mounted 0n the frame plate 9 and serves to limit rotation of the shaft 21 by cccperatiOn With St0p134- Shaft 27 iS pI‘OVided with cams 36, correspOnding in number t0 the 40 number of switch poles, and these cams cooperate with the cam rollers I9 to open the switches day. In accordance with the present embodiment of the invention, the power is controlled by 45 means of a motor-driven switch controlled in accordance with a predetermined time cycle, and optionally operable manual means are provided for opening the switch after it has been opened by the motor and other optionally operable against the pressure of the contact mounting springs l5. Means are provided for manually effecting 45 closure of the switches during the time they are mechanically open, and for this purpose a rigid strap 40 extends upwardly from the block l2. Strap 40 is provided with a bent end 4I co 50 manual means for opening the closed contacts. operating with a latch member 42 mounted on a 50 Referring now in detail to the illustrative embodiment of the invention, as shown in the accompanying drawing, there is provided a base plate 5 to which a cover 6 is fastened by means of 55 screws 1. On the base plate 5 are mounted posts spring t3 which extends forwardly from the plate 9 and is secured thereto. This latch serves to hold the contact I0, the block I2 and the strap 40 in their normal position, as shown by the dotted lines. For raising the spring 43 to release 55 2 2,112,044 the latch 42 and allow the block I2 to move plac ing contacts I 0 and I I in contact with each other, a cam 45 is rotatably mounted immediately be neath the forward end of spring 43 by means of original position, at which time the contacts I 0 a shaft 46 carried in the cover 6 and connected to knob. 41. A spring 48 serves to return the cam 45 to its normal position after the fingers are and I I are out of contact With each other. When it is desired to close the heating circuit during a peak load period, it is only necessary for the customer to rotate the knob 41, thereby re leasing the latch 42 and permitting the contacts to move into contact with each other. Thereaf released from knob 41, while a stop 49 mounted ter, the contacts are restored to their normal on the knob 41 cooperates with a stop pin 50 mounted on the cover to limit rotation of the knob 41. Means are provided for restoring the contacts I5 and II to their normal position and for this latched position upon the next operation of the motor disc 2| or they may be previously restored purpose a cam 52 is mounted on shaft 21 between 15 the cams 36, and is adapted to cooperate with the rigid strap 4I] to move it forwardly to an extent suflicient to latch it in its normal position. Thereafter, the contacts remain open until the . cams 36 are moved to permit them to close. Means are also provided for opening the con tacts I G and I I after they have been closed by the operation of knobs 41, and for this purpose a cam 6D is mounted on a shaft 6I rotatable in the cover 6 and connected to knob 62. Cam (illl is returned to its normal position by means of spring 63, and is limited in its rotation by means of stops 64. A bar 65 is rigidly supported with respect to block I2 by means of a forwardly-ex 'by turning the handle 62. The invention in its broader aspects is not lim-Í ited to the speciñc mechanisms shown and de scribed but departures may be made therefrom within the scope of the accompanying claims without departing from the principles of the in vention and >without sacriñcing its chief advan tages. What I claim is: 1. A switching apparatus including in combina 20 tion a pivotally mounted contact, a second con tact mounted for movement with and with respect to the iirst contact, means for releasably holding the contacts in a predetermined relative position, a rotary cam to move said second contact, man ual’means for releasing the first contact, a cam to move said ñrst contact after manual release and manual means for moving said ñrst Contact tending‘spark shield 66, and is adapted to co in case the second cam means has not moved operate With. cam 60 so that by rotation of cam the’ñrst contact. 60, the block I2 is restored to its normal latched position, whereby contacts II are spaced from the cooperating contacts I0. Stops 49 and 64 maybe apertured so that the 35 apparatus may be sealed to prevent its use by unauthorized persons. > ì A suitable terminal chamber -69 is provided through which the connections may be made to the switch contacts ID and II as well as to the windings of theV motor magnet 20, and the sup ply oi’ power to the motor magnets may be con trolled b-y means of a suitable time switch or otherwise as desired. During the operation of the switching device, the contacts Ill and II are initially held out of contact With each other, but by rotation of the cams 36 caused by operation of the motor disc 2|, the springs I5 cause these contacts to be moved together to close the circuit. Stops 33 50 and 34 limit rotation or“ the shaft 21 against the tension of spring 29, but after the curr-ent sup plied to the motor magnet 253 is discontinued, the spring 29 permits the cams 36 to return to their 30 2. A switching apparatus including in combina tion a_pivotally mounted contact, a second con tact mounted formovement with and with re spect to the first contact, a latch for holding said contacts against pivotal movement, a rotary cam 35 to move said second contact, manual means for unlatching said ñrst contact, a cam to restore said contacts to latched position, and manual means for alternatively restoring said contacts. 3. A switching apparatus including in combi nation a pivotally mounted contact, a second contact mounted for movement with respect to the ñrst contact, a latch for holding said contact against pivotal movement, a rotary cam to space said contacts by movement of the second contact, 45 manual means for unlatching said first contact to close said contacts, a cam to restore said cone tacts to latched position after they are closed by the other manual means and manual means for restoring said contacts to open position prior 50 to closure by said cam. RICCARD PUDELKO.