US613457A

US613457A - Johij c

Info

Publication number: US613457A
Authority: US
Publication date: 1898-11-01
Anticipated expiration: 1915-11-01

Description

No. s|3,457. Patented Nov. I, I898.

J. c. MILLER.

EXTENSION STANDARD.

(Application flied Apr. 11, 1898.)

(N0 Modal.)

TNE nunrus PEYERS 00.. mmuuma. wnsummou. o. c.

NITED STATES JOHN o. MILLER, or TORRINGTON,

CONNECTICUT, ASSIGNOR TO THE MILLER MANUFACTURING COMPANY, OF SAME PLACE.

EXTENSION- STANDARD.

SPE'CIFIGATION forming part of Letters Patent No. 613,457, dated November 1, 1898.

Application filed April 11, 1898.

T0 at whom it may concern:

Be it known that I, J OHN O. MILLER, of Torrington, in the county of Litchfield and State of Connecticut, have invented a new Improvement in Extension-Standards and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and-exact description of the same, and which said drawings constitute part of this specification, and represent, in-'- Figure 1, abroken View, in side elevation, of an extension-standard constructed in accordance with my invention; Fig. 2, a View thereof in Vertical section; Fig. 3, an enlarged view, in transverse section, on the line a b of Fig.2; Fig. 4:, a detached broken view, in side elevation, of the upper end of the tubular standard and the housing thereof; Fig. 5, a detached view, in side elevation, of the operating-sleeve; Fig. 6, a similar view of the locking-cone; Fig; 7, a similar View of theball fender; Fig. 8, a similar View of a cap which covers the ball-fender and which is secured to the housing at the upper end of the tubular standard.

My invention relates to an improvement in extension-standards for piano-lamps, shaving-stands, store-fixtures, &c., the object be ing to produce a simple, durable, .and effective device composed of few parts not liable to derangement and constructed with particular reference to ease of operation.

With these ends in view my invention consists in certain details of construction and combination of parts, as will 'be hereinafter described, and pointed out in the claims.

In carrying out my invention as herein shown I employ a corrugated extension-tube A, adapted at its upper end to have a lampfount, a shaving-stand, a display-rack, &c., to be secured to it, the said adaptation depending upon the character of the use to which the device is to be put. I have used the term extension-tube, but obviously a solid rod would answer just aswell, though not as easy to corrugate and unnecessarily heavy. At its lower end the said tube is extended down into a tubular standard B, which at its lower end terminates in a spreading support of some suitable construction.

$erial No. 677,209. (No modelal The corrugated extension-tube A is supported in any desired position of elevation with respect to the standard B by means of balls C,

riding in its corrugations and coacting with a locking-cone D, made of steel or other corresponding metal, the'said cone having an inwardly-turned flange d at its lower end and an outwardly-turned flange d at its upper end and placed within a shell-like housing E, located at the upper end of the tubular standard B and made integral therewith or attached thereto, as may be desired. The upper end of the housing is enlarged to form a horizontal shoulder e and a vertical flange e. The flange d of the locking-cone D is sup ported, as shownin Fig. 2, upon the horizontal shoulder e of the said housing.

The balls 0, of which three are used in the particular construction chosen for illustration, are severally located in three ballnotches F formed at equal points apart in an operating-sleeve F, which at its lower end is formed with a horizontal flange F which rests upon a horizontal shoulder 6 formed where the housing E offsets from the standard B. The inwardly-turned flange d of the locking-cone D rests upon the upper surface of the flange F of the operating-sleeve, as also shown in Fig. 2. Each notch F of the operating-sleeve is formed with a vertical edge or wall f and inclined edge or Wall f, the vertical walls f of the notches blocking the balls 0, so as to prevent the turning of the tube A except in one direction, and the inclined walls f of the notches F operating in conjunction with the corrugated extension-tube to lift the balls in the tapering'ball-chamber G formed between the locking-cone D and the operating-sleeve F, the said annular ball-chamber F, while on the other hand the tube is prevented from being rotated too far in the other direction by means 'of a ball-fender H in the form of a Washer supported upon the upper ends of the cone D and sleeve F, and therefore closing the top of the ball-chamber G.

The engagement of the balls with the lower face of this fender prevents the undue rotation of the extension-tube A through the medium of the balls which rest between the vertical flutes of the said tube. A conical cap I, having a bayonet-slot joint I in its flange I fits down over the flange e of the housing E and forms a cap for the said housing, as well as a means for securing the fender II in place, the cap itself being secured in place by means of a bayonet-joint pin I mounted in the flange e of the housing E, as shown in Fig. 1.

Normally the action of gravity and the downward thrust of the tube A causes the balls 0 to move downward in the annular ball-chamber G, and hence inward toward the tube A, on account of the conical form imparted to the chamber by the locking-cone D. In this way the balls will be crowded with such force into the corrugations of the tube A that the same will be firmly supported in the standard. Now to unlock the tube to permit it to be raised or lowered it is grasped by the hand and rotated in the direction of the inclined walls f of the ball-notches F of the operating-sleeve F. As the tube is rotated the balls are carried with it by reason of their being embedded, so to speak, in its vertical corrugations. They are therefore positively moved with the tube, sliding over the smooth inner face of the locking-cone D. As the balls are thus positively moved with the tube A when the same is rotated they will be lifted by the inclined walls f of the operatingnotches F into the upper portion of the ballchamber G, which is large enough to permit them to move outward sufficiently to release their hold upon the tube and permit the same to be freely raised or lowered so long as it is maintained in its rotated position. To relock the tube, a slight reverse rotation is imparted to it, whereby the balls are allowed to run down the inclines f of the ball-notches F. As the balls run down the said incline they run into the lower part of the chamber G and are forced inward by the cone D, so as to again take a firm hold upon the extensiontube A, which they look in virtually the vertical adjustment it had at the time it was reversely rotated, as explained. It will thus be seen that I employ the corrugations of the tube as one of the factors for moving the balls in unlocking the tube.

It is apparent that in carrying out my invention some changes and alterations may be made in the construction herein shown, and I would therefore have it understood that I do not limit myself to the exact construction illustrated, but hold myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of my invention. I am aware, however, that extension-standards employing a corrugated extension-tube and balls for supporting the same in any desired position of vertical adjustment are not broadly new, and I do not therefore make any broad claim to that combination.

Having fully described my invention, what Iclaim as new, and desire to secure byLet-ters Patent, is-

1. The combination with a tubular standard, of a vertically-corrugated extension-tube mounted in the said standard, one or more locking-balls engaged with the corrugations of the tube, and means for lifting the balls to release the tube when the balls are moved toward such means by the rotation of the tube, the corrugations of which cause the balls to be moved with it when it is rotated.

2. The combination with a tubular standard having an annular ball-chamber located in its upper end, of a vertically-corrugated extension-tube mounted in the said standard and extending downward through the said chamber, one or more locking-balls located within the said ball-chamber and entering between the corrugations of the corrugated tube, and an operating-sleeve formed with ball-notches having inclined lifting edges or walls, whereby the balls are lifted, when the extension-tube is rotated in the direction of the said inclined walls, so as to elevate them in the said ball-chamber and permit the tube to be vertically adjusted.

3. The combination with a tubular standard having an annular ball-chamber located in its upper end, of a vertically-corrugated extension-tube mounted in the said standard, one or more balls located in the said chamber in position to engage with the said tube, and an operating-sleeve formed with ball-notches which receive the said balls and which have inclined lifting-walls which, when the tube is rotated toward the same, lift the balls and release the tube and permit it to be raised and lowered.

4. The combination with a tubular standard, of a vertically-corrugated extension-tube mounted therein, a locking-cone located in the upper end of the standard, an operatingsleeve located within the said cone, forming an annular ball-chamber in conjunction there with, and formed with ball-notches having inclined lifting-walls, and balls located in the said notches and lifted by the said liftingwalls thereof, when the tube is rotated toward the said walls, for releasing the tube and permitting it to be vertically adjusted.

5. The combination with a tubular stand ard, of a vertically-corrugated extension-tube mounted therein, a locking-cone located in the upper end of the standard, an operatingslceve located within the said cone and formed with ball-notches, balls located in the said notches, a ball-fender located above the cone and sleeve, and means for securing the fen der in place.

6. The combination with a tubular standard, of an extension-tube mounted therein, a locking-cone located within the upper end of the standard, an operatingsleeve located within the cone, forming an annular ballchamber in conjunction therewith, and pro- Vided with ball-notches,- balls located in the said notches, a ball-fender located above the cone and sleeve for limiting the lifting movement of the balls,- and a cap placed over the said fender and secured to the tubular standard.

In testimony whereof I have signed this specification in the presence of two subscrib- :0 ing witnesses J OHN C. MILLER.

Witnesses:

HENRY I. JACKSON, WILLARD A. RORABACK.