US504808A - Speing motoe - Google Patents

Description

{No Model.) 2 Sheets-Sheet 2.

W. HGWARD. SPRING MOTOR.

No. 504,808. Patented Sept. 12, 1893.

WIT/VESSEL? UNITED STATES PATENT OEErcE.

WALTER HOWARD, OF WASHINGTON, DISTRICT OF COLUMBIA.

SPRING- MOTOR.

SPECIFICATION forming part of Letters Patent No. 504,808, dated September l2, 1893.

Application filed June 30,1893.

.To @ZZ whom it may concern,.-

Be it known that I, WALTER I-IowAED, a citizen ofthe United States, residing at Vashington, in the District of Columbia, have inyented certain new and useful Improvements 1n lllechanical Spring-Motors, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to that class of motors in which a coil spring is the motive power; the object of the improvement being to obtain a simple device to wind the spring, in connection with means to either accelerate or retard the speed of the motor, said means consisting of blades or radial arms projecting from a hub driven by the motor, the acceleration of the speed being effected by moving the radial blades on their own axes so as to present their surfaces at less angles to the line of resistance of the atmosphere, and the retardation by causing them to present their surfaces at angles more nearly approaching right angles such adjustments being edected by means of weighted arms independently pivoted to the hub andengaging the respective blades, the arms, by means of such independent connection acting independently of each other, each on its own blade.

The invention will now be fully described and afterward particularly pointed out in the claims.

In the accompanying drawings Figure I is a view in elevation partly broken away, showing my improved motor applied to an insect trap. Fig. 2 is a top plan view of the same with a part of the wire netting of the top broken away. Fig. 3 is a horizontal section through Fig. l on the line c with speed governor retained in said figure. Fig. et is a vertical section through the device, on the line y y of Fig. 3. Fig. 5 is a plan view of the train of gearing removed from the motor. Fig. 6 is a perspective view of the governor. Fig. 7 is a side elevation of one of the adjustable blades of said governor. Fig. 8 is a perspective view upside down of the motor spring and its gear carrying drum, and the winding spring and its drum havingits top uppermost but removed from the motor. Fig. 9 is a side view of the parts shown in Fig. 8 said parts occupying relatively normal positions. Fig. IO is a view in side elevation, of my improve- Serial No. 479,303. (No model.)

ments applied to a picture or merchandise exhibitor or advertising device.

Like letters and numerals mark the same parts in all the gures of the drawings.

Referring to the drawings by letter A is the base which supports the moving parts. It is made of wood, preferably, and has its top surface reinforced by a plate A in which the step bearings of the various shafts of the motor are formed. The plate A has in it an opening through which a shaftB passes, upon which shaft are mounted the winding spring drum O and the motor spring drum D. Upon this shaft B are two ratchet wheels B B2 connected, so as to move together, by a pin b, projecting from the bottom face of the ratchet wheel B', entering a correspondingly located perforation b2 in the top face of the ratchet wheel B2. In fact, the ratchet wheels B B2 may constitute a single ratchet wheel of suf cient thickness to have in engagement with its teeth two spring-pawls. One of said pawls shown at d is pivoted at d2 to the bottom face of the drum D of the motor-spring D2, while a similar spring-pawl c is pivoted at c2 to the top face of the drum O of the tape-winding spring O2. The pawls c d are of slightly less thickness than the ratchet gears B B2 so that they can be made to pass over each other without interfering.

In the base A of the frame, and in the shafts bearing plate A', on one side of its center, there is an opening large enough, not only for the passage of the motor shaft B, but also for the free passage of the drum O that carries secured to its under side a spool O3, around which is wound a tape C4 having one end secured thereto to rotate it in one direction and wind the light spring C2, said spring being used simply to rewind the tape O4 upon its spool when the operator releases it, the end of its pawl c sliding then against the teeth of the ratchet gear. When the operator pulls upon the tape O4, he not only winds the light spring O2 but at the same time winds atleast in part, the motor spring D2. When the operator releases the tape, the spring O2 winds it again upon the spool, and a second (or third) pull completely winds the motor spring D2, said result being caused by the pawlsc d in engagement with the ratchet wheel or ratchet wheels. In order to accomplish this operation IOO of winding; the outer end of the tape spring must be secured to the winding drum and the inner end to a stationary part. For this purpose I incase the lower portions of the shaft B in a sleeve E, which is secured by means of a Harige at its outer end to a bracket E2 in turn secured to the base board A. The sleeve E terminates inside the winding drum and the inner end of the tape spring is secured t0 it. Thus, when the tape is pulled, the winding drum is turned in a direction to cause the pawl c to engage with ratchet wheel B2, which causes the shaft B to turn and wind the motorspring D2. lVhen the tape is released the action of the winding spring turns the drum 1n the opposite direction, the pawl c passing over the teeth of ratchet B2 without turning the shaft.

The motor drum is formed as a gear wheel as at l and upon the upper part of the shaft I3 1s a pinion 2 which engages a gear 3 which in turn engages and drives a gear 4 formed inside of a metallic box or coverF of the shape of a frustum of a cone, which covers all of the mechanism. The gearl before mentioned engages also a pinion 2a on the same shaft with a gear wheel 3a which drives a pinion in on another shaft which carries a gear wheel 52. This engages and drives a pinion 6a on whose shaft is a gear wheel 7* meshing with a pinion 8a on a central or governor shaft G. From this arrangement of gearing it will be seen that the conical frustum is driven at a very slow speed and the governor shaft at a high speed.

At H (Fig. 6) are thegovernor blades, which are exactly alike in construction. Each of them is provided with a stem h pivotally placed in a perforation in one side of the upper end of the governor shaft G so that the blade may turn readily upon its longitudinal axis. The upper end of the shaft G is squared, and on each side is pivotally mounted a rod H carrying a weight H2. Each of these rods is passed through an eye or staple h2 secured in one of the blades H above its pivoted line. When the governor shaft is moving at its normal speed the weights H2 are at their lowest points and hold the blades in the position nearest to the horizontal, in which position they offer the least resistance to their passage through the atmosphere. When the speeds become greater than normal the weights H2 will be carried out by centrifugal force and will swing upward and become raised causing their rods to turn the blades on their axes, nearer to a perpendicular position, in which position they will present the greater resistance to their passage through the atmosphere. The speed will thus be automatically regulated. Each blade, withits corresponding rod and weight, acts independently of all the rest so that should one or more become inoperative through any means, the others will not be prevented from performing their functions. The upper ends of the shafts of the train of gears are received in a horizontal plate P supported on legs P2 that have their lower ends secured to the base A. The cone F is supported upon a frame Q having a n X shaped top and divergent legs having their lower ends secured to the base A. An idle wheel p is placed in engagement with the internal gear l of the cone to maintain said gearl in engagement with the gear 3, said idle wheel p being placed diametrically opposite said gear 3.

The motor as thus described, will operate any mechanism requiring small power. In Figs. l, 2 and 4 I show an insect trap with which I desire to operate it. In this structure, which I mount on top of the frame of my motor there is a box consisting of a bottom K, sides K and wire netting top K2. In one side of the base there is a rectangular opening k to permit the insects to enter said box, and around said opening there is a vertical curbing to retain any dead insects in the bottom of the box and prevent them from being pushed olf by live insects. Above the opening 7.: and its curbing there is suspended horizontally a perforated plate 7a3 to temporarily close the opening 71: while the box is taken away to drown or otherwise destroy the captive insects, said plate c3 being operated by a handle 164 on the end of its suspension rod 105. The box rests upon a horizontal frame L that has therein a rectangular opening corresponding with the opening Za of the box, and pendent from said frame L there is an inverted semi-pyramidal shield or insect guide M having three sides shown in Figs. l and 3. The side m is narrower than the side m2 and permits the insects to enter between its edge and the cone F while the side m2 lies substantially in contact with said cone and prevents the insects from passing beyond it. When in use the outer surface of the cone is covered with a cloth coated with sirup or other insect attracting substances.

In Fig. l0 a merchandise exhibitor N is shown mounted upon the upper end of a shaft secured to the top of the cone F.

Having now fully described my invention, I claiml. In a spring motor the combination of a casing, a gear internally secured thereto, a drum D connected by gearing with said internal gear and carrying a spring-pawl a shaft passing through said drum, a power-spring within said drum and having one end secured to said shaft and the other to the drum, and a ratchet wheel secured to the shaft, with a spool and a pawl-carrying drum C upon the same shaft, a stationary sleeve inclosing the lower end of said shaft, a tape wound upon said spool and a spring within the drum C substantially as described.

2. In a spring motor the combination of a drum D carrying a pawl upon its ilat face and a gear on its periphery, a shaft passing through said drum, a power spring within said drum, a ratchet wheel secured to said shaft, a spool and pawl-carrying drum C upon the same shaft, a stationary sleeve E inclosing a por- IOO tion of said shaft, a tape Wound upon said I said shaft, each blade carrying. a staple h2 spool, and a light spring Within the drum O substantially as described.

3. In a spring motor the combination of two drn Ins loosely mounted upon a shaft and each carrying a spring pawl, springs Wound in oppositie directions Within the drums, a ratchet Wheel secured upon the shaft, a train of gears connected with one of the drums, a vertical shaft carrying one of the gears of the train and having a governor thereon consisting of radial blades H having one end pivoted to above its pivotal axis, a rod H passing through said staple and having one end pivoted tothe 15 vertical shaft, and the other carrying a Weight independent of the Weights of the other radial blades substantially as described.

In testimony whereof I aiiix my signature 1n presence of two Witnesses.

WALTER HOVARD. Witnesses:

E. E. MASSON, A. B. DEGGES.

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