US1212787A - Spring-motor mechanism. - Google Patents

Description

F. MAGIDSON.

SPRING MOTOR MECHANISM. APPLICATION FILED'MAR. 22. 1916.

WITNESSES INVENTOR Lyman WASHING rw Patented J an. 16, 1917.

JACOB avis, on UNIONTOWN, PnNNsYLvAma.

SPRING-MOTOR MECHANISM.

To all whoin it'may concem: V

Be it known that I, FRANKMAGIDSON, a

citizen of the United States, and residentof 4 Brownsville, in the countyof Fayetteand State ofPennsylvania, have inventedj'certain new and. useful Improvements in Spring-Motor Mechanism, of which the following is a specification. 1 f

This invention relates to a spring motor designed primarily for oscillating a cradle or other swinging body, and one object is to provide an escapement of novel construction for transmitting positive back and forth movements to such body. The escapement mechanism is of va type wherein oppositely arranged levers coact' with different portions ofa toothed escapement Wheel, and one of the objects herein is to provide improved means for connecting the levers located at opposite sidesof the'sha ft which carries the ratchet wheel.

In the accompanying drawings Flg ure 1 is a longitudinal sectional elevation of .the im'-' proved motormechanism, and Fig. 2 is a similar view of the, escapement end of the mechanism, taken at right angles to Fig. 1.

Fig. 3 is a cross section on line 33 of F ig.

1. Fig. & is a cross section on line 4,-4 of Fig. 1. Fig. 5 is a detail view of the washerlike element interposed between the core sections. j 7

The motor mechanism is preferably arranged within and 1 supported by an elongated casingv ,13 of rectangular form which may be secured at its opposite ends by cross-bars 8 and 8, of a support of suitable form.. This casing isclosed at one end by head 14 in which is formed a bearing for the short shaft 15, the squared extremity 15' of the latter being adapted to receive a crank for winding up the motor. Carried bythe inner end of this shaft is the peripherallytoothed sprocket wheel 17, and projecting inwardly therefrom 1 s the core or spool-like support for the elongated coiled motor spring 18. The" spool or core is formed in sections, 20 being the end section secured by lugs 19 and'pin 19 to the inner side of ratchet wheel 17. 21 designates the inner end section ofthe corewhich is nonrotatably supported by pin 22, the latter disposed diagonally in casing 13 with its extremities, confined in, the casing angles as shown. Between theend sections, 20 and 21 are the intermediate sections 23, which are Specification of Letters Patent.

' A man met with 22, 1916. serial a... 85,332.

Patented Jan. 16, 1917.

rotatable on a shaft 24 extending therethrough, and wlththe opposite ends of said shaft grooved at 24 and rotatably confined;

in core sections 20 and 21 by screws 25-. Thus it will be seen that the only. non-rotatable portion of thecore is the innermost sectlon 21', the opposite end section-20 and the intermediate sections 23 being rotatable relatively toea'ch other, and asconnecting shaft 24 is tself rotatably held, the movable spool sections may rotate either with said shaft or independently thereof. By

this means every possible facility is provided for preventing the motor spring 18 when wound up from deflecting laterally and so gripping and binding the core as to lnterfere with a uniform and regular application of the spring force to the driven mechanism. Thus, even if the lateral de flectionof the spring at one point tends to gr p one section'fof the core, the remaining sections are in no wise affected and may turn freely in response to the unwinding action of the spring. ,1 V

Interposed between the adjacent spool sec-' tions are the washer-like plates or heads 26 having their edges notched and with the re. sulting point like projections'27 bent or de flected'in opposite directions to overhang the adjacent spool sections, thereby bridging the joint between the sections and preventing convolutions. ofspring ,18 from working therebetween wh ch if permitted might result in clogging the mechanism and seriously impairing the operation. Plates 26 are loosely arranged andmay turn either withv the spool-section s, or if impinged by the spring may be held against turning without retarding'the operation. a

The escapement mechanism which 00- operates with ratchet wheel 17 is embodied in the two levers 30 and 31 arranged at oppositesides'of shaft '15 and extending past: opposite portions of the ratchetwheel periphery. These levers are'pivoted at-thei'r inner ends at 30 and Y31. respectively, to a plate 32 secured to theiannularboss 32 of easing head 14:. Thelevers are connected for unitary movement by the bodily movable ring-like link, 33 encircling shaft 15, an arm 34. projecting fromleve'r 30. and pivoted to said link at 34, and a similar arm 35 projecting from the opposite side of lever-.31 and pivotally connected at 35 to link'33. Lever 30 extends through a slot in the top of casing 13 and is entered in notch lug 10 of link 10, whereby the vibrations of said lever are imparted to the body to be vibrated. V

Pivoted to levers 30 and 31, respectively, are the oppositely disposed dogs or pawls 36 and 37 which are adapted to engage the notches of wheel 17 v as in Figs. 1 and 3. A spring 38 connects dog 36 with pivot post 30 of lever 30, and a like spring 39 similarly connects dog 37 with post 31 of lever With the parts thus arranged, it will be seen that movement of levers 30 and 31 in either direction from a straight line position will place the springs 38 and 39 under tension which results in pivotally moving dogs 36 and 37 either into or out of engage ment with the teeth of'ratchet 17,. depend-. ing on the direction of movement'of the levers. Thus, with the levers in the position shbwn in Fig. 4, the movement of lever 30 toward the left has resulted in so deflect-- ing spring 33 as to cause dog 36 to engage the ratchet as seen in Fig. 3, and at the same time the opposite deflection of spring 39 has resulted in a reverse movement of dog 37, thereby disengaging it from the ratchet wheel. The movements thus de; scribed result from the arrangement, char-' acteristic of the present invention, whereby the link -connected levers 30 and 31' move simultaneously in the same direction first toward one side of the casing and then to.- ward the opposite side.

It is further characteristic ofthe escapement mechanism that the lovers; 30 and 31.

are positively impelled through each vibra-' tion'thereof, and the result'of this is that the swinging body is positively. driven through each oscillation, and not simply driven through the oscillations in onev direction and with the momentum thereOf depended on for the opposite oscillations. This positive movement in each direction results from the cooperation of the pivoted dogs with the ratchet. Thus, as lever 30 moves toward the right from the position shown-in Figs. 3 and 4, the unwinding or impelling' movement of the portion of ratchet 17 engaged by dog 36 is in the same direction; whereas the corresponding movement of dog 37 with the portion'of Wheel 17 which it is to engage is in direction 0pposite'to'the movement of said wheel portion, so that the wheel and dog 37 are brought into engagement when moving in opposite directions," and thereby dog 37 is c positively engaged with the'opposite ratchet tooth by the time lever 30 has been shifted suliiciently far to the right to disengage dog 36. Hence, for the next beat or oscillationdog '37 is in positive engagementwith and moves" with ratchet 17 when the, above described operation is'repeated excepting that e er '3 is hen a t i r mitting. he.

force from ratchet 17 While lever 30 is moving its dog 36 into a new operative position. With levers 30 and 3lconnected by the bodily movable ring-like link 33 the levers are properly united and caused to move in unison notwithstanding vtheir arrangement at opposite sides of shaft 15.

The arrangementis such that upon stopping the body being vibrated the dog-carrying levers hold'the mechanism still or inoperative until the body is again started to swing, whereupon the escapement will immediately become active and will continue to-operate until the body is again stopped. or until the mo o ha vbeen c mp e ely unwound.

That portion ot the tructure relating to the motor-- spring and' the mounting; therefor is claimed in my application filed July 15, 191 Serial No. 109,423. a

- I le mi 1. pring motor mechanism Comprising a spring impelled ratchet wheel, two levers extending to different portions of the periphery of the wheel and each having a fixedpivotal mounting, a connecting device to'which each lever is'pivoted, ;said device extending ar und the wheel-axis-and adapted to move bodily when the levers are moved,

v n r e y isp sed dogs p ed to the levers,

' erse y disposed gs pi oted to the. e er 1o springs actuated by the movements of the levers for engaging one dog with the said wheel and simultaneously disengaging the other; dog therefrom, and a body mounted to oscillate and operativelyconneotedto one ofthe levers: r

'3. A spring motor mechanism comprising a spring-impelled shaft,a ratchet wheel secured to said shaft, a fixed support extending to opposite sides of the s'haft, levers 12c pivoted at their inner ends to the Support nd i h t ei f ee portions, extending to.- ward difi'erent portions Of thev wheel periphery, a bodily movable link extendingaround sai sh f an t opposite sides of the latter pivotally connected to the respective levers whereby the, free portions of the levers are caused to mo e simul ne sly he same directi n, reversal d sposed dogs; pi ted to the respective levers, means actuated by the 1 movements of the levers for engaging one dog with the ratchet Wheel and simultaneously disengaging the other dog therefrom and vice versa, and a body mounted to oscillate and operatively connected to one of the levers.

4. A spring motor mechanism comprising a spring-impelled ratchet Wheel, two levers having fixed pivotal mountings at opposite sides of the Wheel axis and extending in opposite directions therefrom, a bodily movable link extending around the wheel axis, arms extending in opposite directions from the respective levers with said arms pivotally connected to opposite portions of said link, reversely disposed dogs pivotally mounted on the respective levers, springs actuated FRANK MAGIDSON.

In the presence of-- JOHN S. GRIFFITHS, N. R. BYLAND.

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

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