US609751A

US609751A - Study-table

Info

Publication number: US609751A
Authority: US
Publication date: 1898-08-23
Anticipated expiration: 1915-08-23

Description

Patented Aug. 23, I898.

J. K. WHIPPU.

STUDY TABLE.

(Application filed Oct. 21, 1897.]

2 Sheets Sheet I.

(N0 Model.)

'mzn'aams mans co. buomumo WASHINGTON. u c.

N0. 609,75l. Patented Aug. 23, I898. J. K. WHIPPU.

STUDY TABLE.

(Application filed Oct. 21 1897.;

2 S heetsSheet 2.

No Model.)

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PATENT Nrrn STATES FFICE.

JOHN K. YVHIPPO, OF SHERRETT, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO JOHN H. FREDERICK, OF WEST MONTEREY, PENNSYLVANIA,

STU DY-TABLE.

SPECIFICATION forming part of Letters Patent No. 609,751, dated August 23, 1898.

Application filed October 21,1897. Serial No. 655,885. (No model.)

To all whom it may concern:

Be it known that I, JOHN K. WHIPPO, a citizen of the United States, residing at Sherrett, i

in the county of Armstrong and State of Pennsylvania, have invented certain new and usef ul Improvements in Ideal Study-Tables; and Ido hereby declare the following tobe a full, clear, and exact description ofthe invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to novel and useful improvements in tables; and'it has for its object primarily to provide a simple and inexpensive table and one that Will embody the requisites of strength and durability.

A further object of the invention is to provide a table that Will be rotatable upon its support and one that can be raised or lowered, as may be desired.

A still further object of the invention is to provide a simple means whereby the table is maintained or locked against vertical or rotary movement.

With these and other objects in view, which will become apparent in the course of the following description, all looking toward improving and simplifying devices of this character generally, my invention consists in the novel combination and arrangement of simple parts that will be hereinafter fully described, and the points of novelty will be particularly pointed out in the appended claimsl With these ends in view I have devised the table illustrated in the accompanying drawings, in which-- Y Figure 1 represents a central vertical section. Fig. 2 is a bottom plan view of the table with the support removed. Fig. 3 is a detail perspective view of the screw-shaft. Fig. 4 is a detail perspectiveview of a'portion'of the means for locking the table against rotation. Fig. 5 is an enlarged detail sectional view taken on the line a: 'm of Fig. 1 and looking at the under side of the table, the plate covering the main portion of the mechanism being removed to clearly illustrate the same.

Referring to the drawings, the numeral 1 designates the main support of the table, which comprises a standard 2, having preferably four legs secured thereto, as indicated by the numeral 3. The standard is provided .table, near the edge thereof.

with an internally-sorew-threaded socket 4 for the reception of a screw-threaded shaft '5, provided With alongitudinal groove 6 therein, the purpose of which will presently become apparent, and ametallic disk '7, provided with a plurality of radiating notches 8 for the reception of a short laterally-extending arm 9, formed, preferably, integrally with a spring-arm 10, secured to one of the depending cross members 11, rigidly secured to the under side of the table proper, l2,which is preferably formed in four sections 13, so put together as to present four inclined upper surfaces. v

A central portion of the table is perforated for the reception of the reduced upper end of the screw-threaded shaft 5, which shaft, before passing through the central portion of the table, passes through a metallic disk or wheel 1 1, having four rods 15, pivotally secured thereto and extending substantially tangentially to the circumference of said disk. Saidrods extend through suitable openings in the rectangular frame formed by the depending'cro'ssmembers at the center of the table, underneath the same, and are further guided and supported by passing through perforations in cross-bars 16, secured to the One of said rods is bent to form a yoke 17, adapted to embrace the spring-arm 10, near the free end thereof, for a purpose which will be clearly apparent inthe description of the operation of adjusting and changing the position of the top, which'will presently follow.

I provide in the periphery of the disk 14. a notch 18, adapted to receive the bent end of a spring-arm 19, secured in any suitable manner to the depending cross members secured to theunder side of the table.

As a means for locking the shaft against rotation I provide a shaft 20, journaled in bearing-blocks 21, secured to the side of the standard 2 and provided with a crank-arm 22, pivotallysecured to acatch 23, which extends through a slot 24 in said standard. Said catch is kept normally seated in the groove in the screw-shaft by a spring 25, having one end connected to an angle-arm 26 on said shaft and its otherend connected to the standard in any convenient manner.

The numeral 27 designates a plurality of drawers, which are guided and supported between the parallel ends of the depending cross members. I

Having described the mechanism wherein my invention lies, I will now proceed to describe the operation in adjusting the table to its various positions. When it is desired to prevent the rotation of the table upon the,

screw-shaft and to hold the same in rigid position, any one of the rods 15 is pushed in, which will obviously cause the disk 14: to partially rotate, which in turn will cause the springarm 19 to be disengaged from the notch in the periphery of said disk.

It will further be noted that the partial rotation of the disk 14 will cause the yoke 17, which embraces the spring end of the arm 10, to move said arm inwardly until the laterallyextending arm 9 engages one or the other of the radial notches 8 in the disk '7, rigidly secured to the screw-shaft, near the upper end thereof, thus preventing the table from rotating independently of said shaft.

When it is desired to permit the table to 'rotate independently of the screw-shaft, the

rods are pulled out, which, as before stated, will cause a partial rotation of the wheel 14 and at the same time withdraw the laterallyextending arm 9 from one or the other of the radial notches 8 in the wheel 7, and at this point the spring-arm 19 will enter the notch 18 in the'wheel 1st, rigidly preventing said wheel from rotating with the screw-shaft.

When it is desired to elevate the table, any one of the rods is grasped and shoved in, thus causing the lateral arm 9 to enter one or the other of the notches Sin the disk 7, thus looking the table to the shaft and making it necessary for the table to rotate when said shaft rotates. The shaft 20 is then rocked, withdrawing the catch 23 from the longitudinal groove in the screw-shaft, which will obviously permit the shaft to be rotated, which rotation will cause the elevation of the table. Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a table, the combination with a standard having a screw-threaded socket therein, of a shaft fitting and moving therein, atabletop upon the upper end of said shaft,a notched disk on said shaft, an inwardly spring-pressed arm on the top adapted to fit within the notches in said disk, and means for throwing said spring-arm into and out of engagement with the disk, as and for the purpose set forth.

2. In a table, the combination with a standard having a screw-threaded socket therein, of a threaded shaft fitting and moving within said socket, a table-top upon the upper end of said shaft, a notched disk secured to said shaft, an inwardly spring-pressed arm on said top adapted to fit within the notches in said disk, a loosely-mounted wheel on said shaft, connections between said wheel and said spring-arm, and means for rotating said wheel whereby said spring-arm may be thrown into or out of engagement with said disk.

3. In a device of the character set forth, the combination with a suitably-supported vertical standard having an internally screwthreaded socket therein, of a screw-shaft in said socket and means for locking the same against rotation, a notched wheel or disk rigidly secured t0 said shaft near the upper end thereof, a loosely-mounted wheel on said shaft, a suitable table on the upper end of said screwshaft, a plurality of rods suitably supported beneath said table and connected to the loosely-mounted wheel and extending tangentially to the periphery thereof so that an in- Ward or outward movement of said rods will cause a partial rotation of said wheel, a springarm secured beneath the table and having connection with one of said rods, said springarm being provided with a latera1ly-extending arm adapted to enter one or the other of the notches in the notched disk, and means for locking the loosely-mounted wheel against rotation with the screw-shaft, substantially as and for the purpose set forth.

4:. The combination with the vertical standard having an internally-screw-threaded socket therein, an externally-sorew-threaded shaft in said socket and having rigidly secured thereto near its upper end a notched disk, a loosely-mounted wheel on said shaft above the disk, having a peripheral notch therein, a suitable table-supported on said shaft, a plurality of rods suitably supported beneath the table and having pivotal connection with said wheel and extending tangentially to the periphery thereof so that an inward or outward movement of said rods will cause a partial rotation of said wheel, a spring arm suitably supported in proximity to said wheel and adapted to engage the notch in the periphery thereof for the purpose set forth, a second spring -arm suitably supported beneath the table and having connection with one of the rods, said spring-arm being provided with a laterally-extending arm adapted to enter one or the other of the notches in the notched disk, and means for locking the screw-shaft against rotation, substantially as described.

5. The combination with the vertical stand- I ard having a laterally-extending slot and an internally-screw-threaded socket therein, a screw-shaft insaid socket having a notched disk rigidly secured thereto and a longitudinal groove therein, a shaft mounted in bearings in the side of the standard and having a latch pivotally secured to a crank-arm thereon and extending through the slot in the standard and into the groove in the shaft, means for keeping the latch normally in engagement with the shaft, a wheel loosely mounted on the shaft above the notched disk, said wheel being provided with a notch in its periphery, a suitable table supported upon said shaft, a plurality of rods having pivotal connection with the loosely-mounted wheel near notches in the notched disk to cause the table to rotate With the shaft, and suitably-supported rods beneath said table, substantially as described.

In testimony whereof I aflix my signature in presence of two Witnesses.

J. K. WHIPPO.

Witnesses:

BEssIE M. SooFIELn, MINNIE 0. ARNOLD.