US1220341A - Make-and-break controlling device. - Google Patents

Description

J. R. JACKSON & F. H. DAVIS.

MAKE AND BREAK CONTROLLING DEVICE.

APPLICATION FILED NOV. I4. m2. RENEWED AUG. 21, 1916.

1,220,341. Patented Mar. 27, 1917.

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1,220,341 Patented Mar. 27, 1917 2 SHEETS-SHEET 2. v 7! J ff 07 din" Z1? 2127:2555; W QWKENTOR 5 %w W AI/ornzy cri UNITED STATES PATENT OFFICE.

JOSEPH R. JACKSON AND FRANCIS HARLEY DAVIS, OF MEMPHIS, TENNESSEE, ASSIGN- ORS, BY MESNE ASSIGNMENT-S, TO WILLIAM H. THOMPSON, OF MEMPHIS, TEN- NESSEE.

MAKE-AND-BREAK CONTROLLING DEVICE.

Specification of Letters Patent.

Patented Mar. 27, 1917.

Application filed November 14, 1912, Serial No. 731,325. Renewed August 21, 1916. Serial No. 116,193.

To all whom it may concern Be it known that we, J osnrn R. JACKSON and F minors HARLEY DAVlS, citizens of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have invented new and useful Improvements in hilake-and-Break Controlling Devices, of which the following is a specification.

The object of this invention is to pro vide a clockwork mechanism for controlling the supply of electrical current to any kind of an electrically controlled or driven device where it is desired to supply current for a predetermined time and then cut off such supply.

The device of this invention is particularly adapted for use in connection with a coin controlled device, in some of its utilitics, but in other of its utilities the device of this invention may be advantageously used without a coin control device.

The invention will be more fully described 7 in connection with the accompanying drawings and will be more particularly pointed out in and by the appended claims.

In the drawings Figure 1 is a plan view of the device of this invention showing the preferred embodiment thereof.

Fig. 2 is a side elevation thereof looking in the direction of arrow 2 of Fig. 1.

Fig. 3 is a side elevation of the device shown in Fig. 1 looking in the direction of arrow 13 of Fig. 1.

Fig. 4. is a sectional view on line 4 4; of Fig. 2.

Fig. 5 is a sectional View on line 5-5 of Fig. 1.

Fig. 6 is a side elevation of a portion of the device looking in the direction in which Fig. 2 is' taken with portions omitted to show the parts more clearly.

Like characters of reference designate similar parts throughout the different figures of the drawings.

First referring to the clockwork mechanism, of the invention as illustrated in the accompanying drawings. 1 and 2 designate clock sides which may be mounted upon a suitable base 3. preferably of insulating material. A going main arbor 4 is mounted in the clock sides and is connected with one end of a main spring 6, the other end of which is connected with a post 8. On one end of the arbor 4: is mounted an. advancing pinion 9. 1O designates the first wheel of the clock train which is loosely mounted on the arbor 1 and 11' designates a ratchet wheel which is fixed to the arbor Pawls 12 and 13, pivotally mounted on the first wheel 10, are held in engagement with the ratchet wheel 11 by a spring 14:.

Next referring to mechanism for turning the arbor l to wind the spring 6, and referring more particularly to Figs. 1, 2, 4 and 6, the same may consist of a ratchet wheel 15 having oppositely extending hub portions 16 and 17 which extend along the arbor 1 outside of the clock side 2. The ratchet wheel 15 is suitably fixed to the arbor 1 on a squared or polygonal portion 18 thereof. A ratchet pawl freeing lever 19 is mounted to swing on a pivot 20 which is coaxial with. the arbor 4: and which is mounted in a strap support 21, secured to the clock side 2. On the hub extension 17 of the ratchet wheel 15, a pawl carrying disk 22 is loosely mounted. Spring con trolled pawls 23 and 21 are pivotally mounted on the disk 22 in a position to engage the teeth of ratchet wheel 15. The lever 19 is locked in any desired position of adjustment by screw 19 and the pawls 23 and 2 1 are provided with pins 25 and 26, respectively, which engage rollers 27 and 28, mounted on lever 19, so as to throw the pawls 23 and 24 out of engagement with the ratchet wheel 15 when the pawls are re turned, as hereinafter described, to a predetermined. initial. position. The levcr 19 can be adjusted so as to permit engagement of the ,pawls 23 and 2 1: with the ratchet wheel 15 when desired. The preferred ad justinent is such that the disk 22 will carry the pawls 23 and 2d forwardly toward an engaging position with the ratchet wheel 15, so that there will be some free preliminary motion of the disk 22 before the pawls 23 and 24 actually engage the ratchet wheel 15, the purpose and function of such preliminary motion being hereinafter described. The disk 22 is connected by links 29 and 30 with a lever 31 which is rigidly secured to a winding shaft 32. The lever 31 may be provided with a hub and the shaft 32 may be connected with the hub 33 by a pin 34, as shown in Fig. 1. A bearing 35 serves to support the parts just described. A coil spring 36, connected at one end as at 37 with the shaft 32 and at the other end as at 38 with a suitable stationary part, serves to return the shaft 32 to an initial position. On its outer end the shaft 32 is provided with a crank or other operating member 39.

Following the clock train, the first wheel 10 meshes with a lantern pinion a0 on a minute arbor l1 which carries a wheel 4C2 which meshes with a pinion as on arbor at. Arbor n carries a wheel 15 which meshes with pinion as on arbor 4-7. Arbor at? carries a wheel. as which meshes with pinion 19 on arbor 50 on which the escapeinent wheel (50 is mounted. lallet lever 61, engaging the osca 'icnieut wheel 50 is mounted on arbor ()2 on which is also mounted. the esca-pement lever 03. it bell crank lever (El, pivoted at to clock side 1, has one arm 66 lying in the path of the escapement lever (33 and has another arm G l which projects along the side of a solenoid (35. The solenoid 65 is provided with a core (36 having an extension 6? which engages a slot in the armfil as will be clearly seen by reference to Fig. 2. When the solenoid (55 is energized the core (36 will be elevated so as to shift the arm 66 out of the path of the escapement lever 68 and permit operation thereof. When the solenoid G5 is deenergized the core will drop by gravity and return the arm 66 to the position shown in Fig. 2 so as to prevent movement of the escapement lever 63.

(in the minut arbor -l1 is loosely mounted a gear wheel 68 which meshes with the advancing pinion 9 secured to the main arbor 4. Wheel 68 is provided with a hub 69 on which is rigidly secured a fiber insulating bushing 70, which insulates one element 71 of a circuit making and breaking device from the arbor t1 and the wheel 68. The element 71 is preferably in the form of a disk having a contact side face 72 which is interrupted by a segment of insulating material 73. The other member of the circuit making and breaking device consists of a wiper which is shown in the form of a wire 7d having a brush or wiping terminal 75 which engages the contact face 72 and which lies in the path of the insulating segment 73. The wiper is held in engagement with the contact face 72 by a coil 76 which imparts yielding tension to the wire to make a contact. The wiper T l is connected with a ter minal 77 having a binding post 78. The contact element 71 is provided with a hub contact surface T3 which is engaged by a brush or wiper shown in the form of a wire 74. W ire T l is connected with a terminal 75 and is coiled at '76 to impart a tension engagement with the hub surface 73.

The free end of the wiper T l is connected with a crank 77 mounted upon a rocking spindle T8. The opposite end of the rocking spindle 78 is provided with a dog 79 adapted to run on the periphery 80 of the disk The periphery S0 of the disk 22 is provided with an interruption in the form of a locking recess 81 into which the dog 79 d6 scends when the parts are in the position shown in l ig. The Wall 82 of said recess 81 acts as a cam to lift the dog 79 when the disk is rotated in a contra-clockwise direction.

The initial winding impulse imparted to shaft 32 transmits a preliminary free move ment of the disk to an extent sutliciently to lift the dog 79 out of the recess 81 onto the periphery 80, prior to working engagement of the pawls 23 andQl with the ratchet wheel 15. in other words the ratchet wheel l5 is not rotated to wind the spring (3 until after sul'licient preliminary movement has been imparted to the disk 22 to raise the dog 79 onto the periphery 80. This lifting movement of the dog 79 rocks the spindle 78 so as to lift the wiper 7-1 out of engagement with the hub contact surface 73 until a full winding stroke, of a predetermined extent, has been imparted to the lever 39 and the winding mechanism returned to its initial position. A stop 83 limits the stroke of the lever 39 to the predetermined wind ng stroke.

The purpose of the foregoing arrangement is to hold the wiper 7-1 out of engagement with the hub contact surface 73 so as to interrupt or break circuit until a full winding movement has been imparted to the main spring or in other words, a winding movement of the predetermined stroke to energize the mechanism to operate for such a time as will vend or supply the predetermined amount of current or service. This is a valuable feature where the device of the inven tion is used in connection with a coin or checl' controlled apparatus. It is also a valuable feature where the mechanism is in private use to permit the user to set the mechanism for operation for a predetermined length of time.

After the shaft 32 has been turned to im part a full'winding stroke, then the pawls 12 and 13 will engage the ratchet 11 and hold the spring (3 up to the full winding stroke but the disk together with the links 29 and 30 and lever 31 will be returned to the initial position shown in Fig. 2 under the action of spring 36. On return movement to the initial position, the recess 81 will return to the dog 79 and the latter will drop into the recess and the coil 76 will positively engage the wiper 74-. with the contact an, face 73 so that circuit will not be completed until a full wii'iding stroke has been given to the spring 6, for the extent of wind to w rich the device is adjusted and the winding mechanism returned to its initial position. If current was supplied prior to the transmission of a full turn of winding stroke,tl'1en the user might inadvertently fail to impart the full winding stroke and such user would not get the time limit of service to which he was entitled.

Current will flow from the source of current Set through wire 85 and wiper 7 5 to the disk contact element 72 and then through wiper 74 and terminal 75 to wire 86, leading to the device 94: to be governed or operated by the circuit controlled mechanism. From the operated or driven device wire 87 leads to binding post 88 and back through wire 89 to the source of current. The solenoid ('35 is connected by wires 90 and 91, in parallel with the circuit, with binding posts 88 and 75, respectively.

It will be seen from the foregoing that when a winding turn is given to the spring the circuit will always be broken or opened by preliminary disengagement of the wiper 74 from the hub contact 7 3, until a predetermined winding movement has been imparted to the main arbor 4. The winding movement imparted to the arbor at will turn the disk contact member 71 so as to advance the circuit breaking portion 73 with respect to the terminal 75 of the wiper. Movement thus imparted is effected through the pinion 9 and the gear wheel 68. Then the clockwork starts to run and the arbor 4 unwinds responsively to the spring 6, then the circuit breaking portion 73 is brought back toward and abreast of the terminal 75 so as to open circuit and prevent further supply of current. W hen circuit is broken or opened, the solenoid 65 will be dcenergized and the core 66 thereof will drop by gravity and bring the arm 66 into engagement with the lever 63 so as to arrest the clockwork mechanism.

It will be understood from the foregoing that the lever 39 can only be actuated to impart a wind. to the spring throughout a pre- (lQtQl'l'l'llllOd stroke. Successive winds, each of a like predetermined stroke, can be im parted so as to advance the circuit breaking portion 73 throughout nearly a complete circle of travel ahead of the brush 75. However, a stop 92, on the ratchet 11, will engage a stop 93, mounted upon any suitable part, to prevent winding of the spring to such an extent that the gear 9 will turn the gear 68 throughout more than approximately eleventwelfths of a revolution, it being clear that if the circuit breaking portion 73 was turned past the wiper 75, by reason of the contact disk 72 being turned through a complete revolution, or slightly more, that the pur chaser of service would not receive the amount of service which he purchased. The mechanism. will always be stopped the first time that the contact breaking portion 7 3 reached the wiper 75.

An electrically governed, controlled or driven device is diagrammatically indicated at 94-, connected with wires 86 and 87.

lVhile one specific form of this invention has been described and shown it will be understood that the invention is not to be limited to such construction except for such limitations as the claims inay'iniport.

e claim v 1. In a make and break device controlling means, an electrical make and break device comprising a pair of coacting elements, clock work connected to operate one of said elements, winding means for said clock work, and a device for opening circuit during operation of said winding means, substantially as described.

2. In a make and break controlling means, an electrical make and break device, clock work for operating said make and break device, winding means for said clock work, and

- mechanism actuated by said winding means prior to transmission of winding movement to said clock work for opening circuit during completion of the winding movement, substantially as described.

3. In a make and break device controlling means, an electrical make and break device, clock work for operating said make and break device, winding means for said clock work, and spring controlled mechanism actuated by said winding means prior to transmission of winding movement to said clock work for opening the circuit during the winding movement, substantially as described.

4. In apparatus of the character described, clockworks, means to wind the clockworks, a cam element associated with winding means to be operated thereby, a rock shaft provided with an operating crank to contact with the cam and having a lifting crank, a movable contact member having an extension, a relatively stationary contactmember normally contacting with the extension of the movable contact-member and adapted to be shifted by the lifting crank to break the contact upon the operation of the winding means, a contact device arranged in cooperative relation with the movable contact-member, and means for driving the movable contact-member by the clockworks.

5. In apparatus of the character described, cloekworks, means to wind the clockworks, a rotatable contact-member connected with the clockworks to be driven thereby, a current supplying contact normally contacting with a portion of the rotatable contactmember, automatic means to move the current supplying contact out of contact with the portion of the rotatable contact-member upon the operation of the winding means, and a co-acting contact-member arranged near the rotatable contact-member.

6. In apparatus of the character described, a spring motor, winding means for the spring motor, a rotatable contact-member, driving connecting means between the spring motor and the rotatable contact-member, a current supplying contact normally contacting with a portion of the rotatable contact-member, means to move the current supplying; contact to break such normal contact during the operation of the Winding means a oo-aoting contact-member arranged near the rotatable contact-member, and means to arrest the operation of the Wind- 10 .ing means before the rotatable contact-member has been turned for a complete revolution in one direction upon the operation of the Winding means.

In testimony whereof We our signatures in the presence of two Witnesses.

JUSEPH R. JAGKSUN.

FRi-illClS HARLEY DAVIS.

Witnesses G. W. JONES,

JOHN YV. Fanny.

Uopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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