US427223A

US427223A - Adjustable table

Info

Publication number: US427223A
Authority: US
Publication date: 1890-05-06
Anticipated expiration: 1907-05-06

Description

R. s. CARR. ADJUSTABLE TABLE. N0. 427,22a. Patented May 6, 1890. L A Y I a z z 1 A3,, C aw/5.,

INVENTOR UNITED STATES PATENT FFICE.

ROBERT S. CARR, OF HAMILTON, OHIO.

ADJ U STAB LE TAB LE.

SPECIFICATION forming part of Letters Patent No. 427,223, dated May 6, 1890. Application filed September 18, 1889. Serial No. 324,284.. (No model.)

To all whom it may concern.-

Be it known that I, ROBERT S. CARR, of Hamilton, Butler county, Ohio, have invented certain new and useful Improvements in Adjustable Tables, of which the following is a specification, reference being had to the accompanying drawings, in which Figure 1 represents a front elevation of the table with parts broken away to show the interior arrangement of the standard. is a diametrical section of the taper pin and flange. Fig. 3 shows Fig. 2 in perspective inverted. Fig. 4 is a plan showing the manner of adjusting and clamping the table-top. Fig. 5 is a vertical section of Fig. 4. Fig. 6 represents a plan of the eccentric collar or handwheel D. Fig. 7 represents a plan of the table with the top placed vertical. Fig. 8 is a side elevation showing the top adjusted to different angles. Fig. 9 is a plan of the top of tube 0, showing the lug or swell E, on which the eccentric collar D operates.

In the drawings, A denotes the table-top, supported by a central standard consisting of the tubes B and O. The tube B slides within the tube 0 and is retained at any point of extension by a partial turn of the eccentric collar or han d-wheel D,which clamps B to O by means of depression or swell E in the top of tube C. The head F of the tube B is made with a double-inclined concave face,

M M indicate the feet, connected together,

through which the tube 0 passes at N and is held in place by set-screw O.

P denotes a coil-spring, which counteracts the weight of the top A, while being vertically adjusted by extending the tubes B and O.

In construction the taper pin J is made of steel and driven tightly into the cast-iron flange K. The eyebolt I answers the double purpose of clamping the disk G to the head Fig. 2 7

F to retain the top A in any desired angle or slant and also to grip the taper pin J and prevent the top A from rotating. However, the eye may be omitted from the'bolt I and a common bolt-head substituted, which will permit the pin J to pass outside of the bolthead, when the bolt I will clamp the disk G to head F and leave the pin J free to serve as a pivot for the top A. By these means the table-top may be adjusted and held at any desired height and also at any desired angle or slant ranging from a vertical on either side of the standard to ahorizontal position.

The inclines on the faces of disk G and head F are arranged to prevent the top A from slipping to a more vertical position when it is clamped and to hold it rigidly in a horizontal position.

The extension of tube 0 through the feet or base M permits increased vertical adjustment.

When the top A is adjusted almost vertical, it may be used as an artists easel.

The form and size of the various parts may be varied to suit different requirements.

I am aware that adjustable tables have heretofore been made for draftsmen and for ladies cutting-tables. I do not therefore claim, broadly, such adjustable tables as my invention; but

What I do claim as my invention, and desire to secure by Letters Patent, is-

1. In a drawing-table, the combination, with a central standard provided with ahead having a vertical face, a disk axially adj ustable on said face, and a central bolt which clamps said disk to said head, of a table-top provided with a vertical pivot, said pivot bein g diametrically inserted in said disk, whereby said table-top may rotate in its own plane and may assume different vertical angles by the axial adjustment of said disk.

2. In a drawing table, the combination, with a central standard and a head thereon having a vertical face transversely concave, of an axially-adjustable disk with a face transversely convex intermembering with the face of said head, a central bolt which clamps said disk to said head, and a horizontal tabletop attached to said diskby a vertical pivot,

whereby said table-top may approach a vertical position proportioned to the amount said central bolt is loosened.

3. In a drawing-table, the combination of the central standard consisting of tubes A and B, lug E, formed in the top part of tube A,

and the collar D, swiveled on tube A and provided with eccentric top aperture through which tube B passes, whereby a partial turn of collar D clamps tube B rigidly against the IO inner side of tube A, substantially as described.

ROBERT S. CARR.

Witnesses:

H. R. DILG, D. M. MOCLUNG.