US833810A - Rotatable delivery-shelf. - Google Patents

Description

I A P P L i PATBNTBD 0C TTTTTTTT 6. T. VAN NNNNNNN up' W 4` l' l .I

No. 833,810. PATBNTED 00123, 1906.

A T. VAN KANNEL.

ROTATABLBZDELIVBRY SHELF.y

APPLICATION FILED NOV.16. 1905.

' a SHEETS-SHEET 2.

, PATBNTED' 00T. z3, 1906. T.. VAN KANNEL.l`v r v ROTATABLBDELIVBRY SHELF'.

APPLICATION FILED `NOVl 16j. 1905.

` 3 SHEETS-SHEET 3.

fnrrnanlus PlrllsAco.. IIIAuHNmN, n. c.

, UNITED sTATEs IPATENT OEEIOE.

` THEOPHILUs'vAN KANNEL, OF NEW YORK, N. Y., AssIGNOR To VAN KANNEL REVOLVING IDOOR COMPANY, OENEw YORK, N. Y., A CORPORATION WEST VIRGINIA.`

No. 833,810. f

Specification ofLetters Patent.

yEOTATABLE DELIVERY-SHELF.

Patented Oct. 23, 1906.

Original application filed June 3, 1905, Serial No. 263,653. Divided and this application led Novembei.` 16, 1905. Serial No. 287.690. Y

To all whom, t `may concern/: j

. Be it known that I, THEoPHrLUs VAN KANNEL, a citizen of the United States, resid- `ing at No. 524 East One hundred and thirtyfourth street, NewYork, county of New York, andjState of New York, have invented ceris a division'of my, application, Serial No.

263,653, led June 3,1905,for patent on rotatable partition-shelf, and lrelates particularly vto the use of a suitable motor, as a spring or weight, for turning the shelf a part rotation within its casing, and to means operated by hand for energizing the motor or setting it in an operable condition and releasing it Vto n actuate the shelf. f

A person unfamiliar with the yuse of a rotating shelf would'be liable to stopy or start the. yshelf suddenly, and thus spill food from the dishes. By using a spring or weight of suitable proportions `a motor can be obtained which will operate to turn the shelf with very little excess of force, and thus avoid the' jarring of the shelf and its contents, which might otherwise occur. In combining the -motor with the shelf a pulley is preferably fitted to turn loosely upon one of the shelfpivots or spindles and the spring or weight connected with such pulley, to turn the same automatically when the spring is wound or the weighty raised. The pulleyis connected with the shelf or its spindle by a pawl and ratchet, andV cords and handles are provided to turn the pulley sufficiently to wind the ,spring or raise the weight and -simultaneouslyvengage the pawl and ratchet, so that i when the handles are released the motor may turn the shelf until arrested.

spring-motor, Fig. 2 being a vertical section on line 2 2 in Fig. 3, which is a horizontal section on line 3 3 in Fig. 2. Figs. 4 to 7, inclusive, showin diagrammatic form the use of a weight as a motor. Fig. 4 shows a vertical Section analogous to Fig. 2, the section being made in the plane of the partition. Fig. 5 is a cross-section of the partition adjacent to the weight and its hand connection. Fig. 6 is a cross-section on line 8 8 in Fig. 4, and Fig. 7 is a plan of the parts shown in Fig. 4

with the upper bearing for the drum-journal removed.

A designates the partition separating two rooms with which the pantry window or rotatable shelf communicates.

` M is the casing, having open doorways at opposite sides of the partition and packings N and O contactingwith the drum to-prevent the passage of vapors therethrough. Y

In Fig. 2, C designates a journal in the partition for the lower head D of the drum, with bearing on thebottom L of the casing.

-J designates a journal for the up er head E of the drum, with bearing upon t e top/L of the casing. The drum is Ashown formed with segmental sides F, -having a shelf G intermediate to the -heads D and E, and a quadrantal window-panel H, fitted between the intermediate shelf and the upper head at one edge of the shelf, and a similar panel between the shelf and the lower head at the opposite edge ofthe shelf, thus leaving doorways F between the sides F, which are open at opposite sides of the drum or opposite edges of the shelf, above and below the same. The pulley c, has its hub fitted toturn upon the journal J, and a ,coil-spring f is wound around the hub of the pulley and has one end attached to the pulley, and the opposite en'd to a stationary support g. A ratchetwheel with two teeth d is attached rigidly t the. journal J, and the wheel e is' provided vwith a spring-pawl p to engage such teeth.

`The pulley e is provided with two grooves and cords 7L and/i, wrapped'v around the grooves and 'their ends secured by `staple y'. The

cords are extended over guide-wheels 7c arid l" within reach of the operators -at opposite sides of the partition, the ends 'being provided with handles m and n for turning the jfl pulley. AThe cords 'are arranged sothat thef"w pulling of the handles turn 'the wheel e and` pulls the pawl backwardly from one tooth d to the next, which pull winds the spring f a half-rotation and gives it su'liicient tension to turn the drum a half-rotation. A stop I is attached to the wheel e and is held normally by the weight or spring against an abutment p and is drawn back when the cord h or i is pulled. Such stop limits the return movement of the wheel e when the cords are released, but does not positively control the movement of the drum. A cam a is shown in Fig. 2, combined with rolls b, attached to leaf-spring c, the same as shown in Fig. 5 of my copending application, Serial No. 263,653. Such cam is formed with recesses upon opposite sides, and the springs press the rollers normally into such recesses, which are arranged in relation to the doorways F upon the drum so as to arrest the drum when the doorways coincide with the doorways of the casing. The stop I thus regulates the movement of the wheel e, while the cam a, regulates the movement lof the drum. The spring is thus set in an operable condition by the pulling of the handle m or n, and then operates thereafter automatically with a predetermined force to turn the drum the desired half-rotation.

The motor formed of a weight is shown in Figs. 6 to 9, inclusive, where the top of a weight g, instead of a spring, is connected with one side of the pulley o by cord 7L and the bottom of the weight with the opposite side of the pulley by cord h2, carried over guidewheels g2. The cord is kept taut by a weight The weight is also connected by cords e with handlesr fm and n upon opposite sides of the partition, and the weight is fitted to slide in a vertical box r, having a check-valve s to admit air freely during the raising of the weight and an adjustable vent which can be regulated to control the descent of the weight during its operation upon the drum. The handles m and n are shown in Fig. 7 in their depressed position. To form such vent, a strip tis fitted in a groove t in one side of the box and adjusted by holding-bolts u and setscrews u, so as to leave a vertical passage s by the side of the weight as it descends in the box. The adjustment of the bolts and screws permits the strip t to be set at different distances from the weight in different parts of the box, so as to modify the area of the vent-passage s', and thus afford the air a free vent when the weight is first descending and choke off the vent near the end of the descent when it is requisite to bring the movement of the drum gradually to rest.

In Fig. 9 the lower journal is replaced by antifriction-balls fitted to circular channels. A weight has several advantages over a spring for shifting the drum in the manner described, as the weight produces a uniform pull upon the rope throughout its entire movement and can be arranged to rest upon the bottom of its inclosing box at the end of its stroke, thus limiting the stroke without. applying any strip to the pulley e.

Any other means of connecting the motor with the drum may be employed, as the essential feature of the invention is the connection with the motor of means operated by hand for setting the motor in an operable condition and releasing it to actuate the drum. With such an arrangement the force of the motor is expended at the end of each movement of the drum, and the setting of it in an operable condition consists in reenergizing the motor by lifting the weight or winding the spring to a degree just su'lliciem', to shift the drum. Such mechanism always operates the rotating shelf uniformly and is thus more efficient and satisfactory in praetice than any means for pulling the drum around directly by hand, as the operation of the weight upon the drum can be controlled to vary the movement of the drum. From the above description it will be `understood that the invention embraces means for energizing the motor, which means (when operated) simultaneously brings the motor into operative engagement with the shelf, sueh that when the means is released the motor will rotate the shelf to the desired extent. The engagement of the motor with the shelf may be operatively effected by any suitable means, the means shown consisting of the ratchet rigidly mounted upon one of the journals upon the shelf, a pawl movably mounted adjacent thereto, and manuallyoperated means for propelling the pawl into a suitable position to engage with the ratchet.

Having thus set forth the nature of the invention, what is claimed herein isl. A rotatable delivery-shelf, a motor, and means for energizing such motor, said means when operated simultaneously bringing said motor into operative engagement with the shelf, such that when the said means is released the motor will rotate the shelf to the desired extent.

2. A delivery shelf, journals attached thereto whereby the shelf is rotatably mounted on a suitable support, a ratchet rigidly mounted on one of the journals. a pawl movably mounted adjacent thereto, manuallyoperated means for propelling the pawl into a suitable position to engage with the ratchet, said means when operated simultaneously energizing a motor, whereby said motor when released after said engagement will automatically rotate the shelf.

3. A rotatable delivery-shelf, a cord and weight connected to the shelf 'for turning it, a box inclosin g the weight movably and coufining a cushion of air beneath the weight, and a groove in the side of the box having its wall adjustable to and from the weight to vary and control the escape of air beneath the weight when turning the shelf.

IIO

833,810 4 i A i 3 4. A rotary delivery-shelf, a cord and Weight connected to the shelf for automatically turning it, a -boX inclosing the Weight movably and confining a cushion of air beneath the Weight, a groove in the side of the boX to permit the escape of air past the Weight, and a gib fitted to the groove and adjustable at different points in its length, to

control the escape of air diversely at different points during the descent of the Weight.

5. The combination of a delivery-shelf pivoted to rotate, a cord and Weight connected to the shelf for automatically turning it a half-rotation, a box inclosing the Weight neath the Weight, a handlev for raising the Weight, and a check-valve admitting air beneath the Weight during the raising of the same, and closing to retain air during the descent of the Weight When turning the shelf.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

^ THEQPHILUS VAN KANNEL.

Witnesses:

JOHN J. RAPP, FRED FIEN.

Amovably and coniningra cushion of air bei5v

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