US1613991A - Driving mechanism - Google Patents

Description

Jan. 11 1927.

E. F. GlANNAT'rAslo DRIVING MECHANISM Filed Jan. 9. 1924- 2 Sheets-Sheet 1. v

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ATTORNEY.

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E. F. GIANNATTASIO DRIVING MECHANISM Fil'ed Jan. 9y 1924 2 Sheetssheet 2 INVENTOR.

BY' i ATTORNEY.

Patented Jan. l1, 1927.

UNITED ST ETTORE F. GIANNATTASIO, OF NEW YORK, N. Y.

DarvING MEoHANIsM.

Application filed January 9, 1924. Serial No. 685,194.

Y My invention relates to improvements in driving mechanisms applied to a primemovergwith the object in view of conserving the power supplied tol said4 prime mover. Under ordinary working conditions, the motor or prime;mover,.or the like source of power, will transmit its energy through a ily wheel or other device which after being startedv will move by inertia, so that if the power supply to the prime mover is interrupted, the inertia means will carry forward the driving mechanism without 4appreciably slowing down.k My invention is adapted to utilize this principle by frequent interruptions of the power supply to the prime mover, these periods being brief, and. permitting the inertia means to bev utilized during the interval of interruption without terfering with the operation of the prime mover. Ally-wheel may be used as one of the means ofk utilizing inertia, or a revolvable body flexibly connected to said prime mover, although this means is not imperative, as it is possible to use the inertia of the'motor or rotor for this purpose, and the apparatus illustrated in the drawing is only by way of example, and illustrates one way of carrying out my invention, I

My invention is intended to provide an effective means for automatically interrupting the power supply for the prime mover, and permitting the parts already set 1n motion to move by inertia until the power supply is turned on again. Y

Reference is to be had .to the accompanying drawings forming a part of this specification, in which -similar reference characters indicate corresponding parts in all the views. Y Figure 1 is a plan view partly in section of an embodiment of my invention. Figure 2 is a side elevation thereof.

Figure 3 is a detail of a brake `mechanism which can be used to control the speed of the apparatus, n l y vFigure 4 shows details of ratchet wheels forming a part of the connection, and

Fig. 5 is a diagrammatic view of the electric circuit associated withthe invention.

In the drawings the prime mover 46 is an electric motor which is mounted on a suitable base 10, having posts 11, and is connected through a'chain of gearing to the inertia means 12. In the examples shown this inertia means has a 'drum 13 loosely Vnected to the binding posts 50a.`

mounted on a shaft 14 which is journaled in supports 15 on brackets 16. Within the drum 13 is a coil spring 17, oneend of which is secured by a set screw 18 to aV hub within the drum 13, and this hub is made fast'to the shaft 14 by a set screw 20. At its outer end the spring 17 is attached to the drum 13 by a set screw 21, The drum 13 hasan extension 21v connected to the pulley 22 fro-m which power may be taken. The member though' power may be taken'from the shaft `14 in any suitable way.

The shaft 14V is driven by a sprocket vwheel 30, chain 31,V and sprocket wheel 32 on the shaft 33 which is mounted. inbearings 34, 35 and 43. Secured to the shaft by a key 36a is a collar 36 which is provided with ratchet teeth 37 which engage ratchet teeth 38 on the second collar 39. The collar 39 is provided with a shank 39 which is slidable within a stationary sleeve 41 connected to the bracket'43, and the collar is normally urged forwardly, or towards the collar 36 by a spring 100 which latter encrcles the shaft 33 and bears against the bracket 43, all of which is clearly shown in Figure 1. The

,motor 46 is connected by supplyl wires b--b with the binding posts 47 and 47 respectively ofthe switch or circuit breaker B and this has a tilting contact plate 48'hav1ng a cross bar 48 which latter carries contacts 49 so positioned as to .make contact with the contacts 49 connected to wires b2 and b3 leading yto binding posts 50. lThe binding posts 50 are connected by leads 50 with binding po'sts()a which latter are connected to the solenoid 27 by leads a a. The lead a, has a switch 28 therein for breaking the circuit through the solenoid 27 YAs shown clearly in Figure 5. the binding posts 47 and 47 are connected to the binding posts or contacts 49 by Lwires 52 and 53' respectively. 59 and 60 designate leads from a source of supply which leads are con On top of the tilting plate 48 which is normally held open by a spring 53, is a striking arm 52 which is arranged near the Cam wheel 54, this turning on a shatt 55 and having rollers 56 to strike the arm 52 at intervals, and thus close the plate 48 against the contacts 49, thereby closing the switch B for a short interval. rllhe shaft 55 connects with the shatt 14 by gears 57 and 58, therefore when the motor 46 is started, the motion is transmitted through the iiexible inertia means above described to the cam 54, and the roller abutments strike the arm 52 and close the circuit to the motor through the switch 48.

lt will be seen that the current will tiow in through the circuit rz-a, b2-Z)s, t-he switch B, and the circuit ZJ-b to the motor, and that the circuit will be interrupted by the switch B as described, and during this interval the rotation of the shaft 14 will be kept up by the inertia unit l2 attached thereto.. The speed of the unit may be controlled by the switch 28 which when closed will apply the brake strap 23 by reason of the action of the magnet 2T.

It will be clear, therefore, that the mechanism between the prime mover, as for instance the motor 46, and a driven member, as for instance the pulley 22, can be any suitable driving connection, and it will likewise be understood that when l refer to cut-ting out the power supply to the motor, l mean to include any such reduction of the power supply as will cause the inertia element included in the mechanism whatever it may be, to act by momentum under the impulse .imparted to it by the motor so as to maintain the speed of the driven member during the period ot cutting out or reduction without appreciable loss.

From the above description, it is believed the invention will be fully apparent to those skilled in the art and l desire it understood that various changes may be made in the form and proportions otthe device, such as fall within the scope of the appended claims without departing 'trom the spirit of the invention.

l'claim:

l. ln apparatus of the kind described, means for conserving power comprising in combination, a motor, a transmitting element driven by the motor and biased to turn by its own inertia when in motion, and

Vmeans for intermittently and periodically ofi'l the power supply to the motor at regular intervals.

3. A constantly running motor, a power transmitting means driven by the motor and operating y inertia when the power supply of the motor is cut oft, and means operative to cut oil' the power supply to the motor whereby power is delivered to the power transmitting means by periodic impulses at regular intervals.

4. ln an apparatus of the kind described, means tor conserving power comprising in combination with a motor and power transmitting means driven by said motor, an inertia unit forming a part of the power transmitting means, and means for cutting etii the power supply to the motor at regular periodic intervals, said inertia unit operating by inertia during the periods that the power supply is cut off whereby to transmit power during such periods.

5. ln apparatus of the kind described, means for conserving power comprising in combination, a prime mover adapted to move by inertia when its power supply is cut off,and means for intermittently and periodically cutting the motor power supply to said prime mover in and out at regular intervals.

6. In an apparatus of the kind described, means for conserving power comprising a prime mover, a driven member, and a member forming an elementot the connection between the prime mover and the driven member and movable by momentum when the power supply o; the prime mover is cut oli, and means for cutting ott said power supply at regular intervals.

7. ln an apparatus of the kind described, a motor, power transmitting means operated by said motor and including an inertia element, and means for intermittently and periodically cutting oilp the power supply to the motor at regular intervals and permitting such inertia element to operate said power transmitting means during the periods ot interruption of said motor power supply, said power interrupting means being so arranged that the periods of interruption -ot said motor power supply are independent of the speed ot the motor.

8. An apparatus of the kind described, comprising a motor, a power transmitting element operated by said motor and lincluding an inertia element, means operated by said power transmitting element for intermittently andv periodically ,cutting .out the power supply to the motor at regular intervals, said inertia element operating'by its own momentum during the periods of interruption of the motor power supply to transmitpower.

9. An apparatus of the kind described comprising a motor, a power transmitting element operated by said motor and including an inertia element, means operated by said power transmitting element-regardless of the speed of said motor for intermittent- 1y and periodically ,cutting off the power supply to the motor, at regular intervals,

said inertia element operated by its own momentum during the periods of interruption of the motor power supply to transmit power.

In testimony whereof, I have signed myv l0 name to this specification this 5th day of January, 1924.

ETTORE F. GIANNATTASIO.

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