US820050A - Swinging desk-shelf. - Google Patents

Description

PATENTED MAY 8, 1906.

C. KEUK. SWINGING DESK SHELF. APPLIOATEDH FILED JAN. 2a, was

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PATENTEB Mi? 8, 1906.

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UNITED STATES PATENT OFFICE.

OHRlSTlAN KECK, OF CRESCENT SPRINGS, KENTUCKY, ASS'IGNOR TO THE GLOBE-WERNIUKE COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

SWINGFNG DESK-SHELF.

Pasadena 8, 1906.

Application filed January 26, 1&65. Serial No. 242,740.

To all whom it may concern.-

Be it known that I, Onnrs'rmn Knox, a citizen of the United States, residing at Cresccnt-Sprin s, in the county o f-Kenton and State of entucky, have invented certain new and useiallmprovements in Swirl in Desk-Shelves, of which the following is aulfi clear, and exact description, reference being bad to the accom any-mg drawings, lemming part of this-s cation.

My inren on relates to that class of adjustable swinging shelves that can be applied to the corner of any ordinagiy desk and can be swung around to the end the desk and let down out of the Way when not in use "and can be raised and locked to a horizontal osition andbe swung around to the front of desk easyreaeh of the person sitting at the desk. Such shelves are found very convenient as a snppltal device to a desk and serve a variety ot purposes-such, for instance, as carrying a type-writer, a heavy book of reference, a ledger, card-index trays or cabinets, letter-files, or most anythingthat it is desirable to bring into temporary use.

The object of my invention is to 1provide a shelf of this character which shal be very simple in construction, strong without undue weight, cheap to manufacture, and which can be applied to any desk without time or trouble or the aid of a. mechanic.

The novelty of m invention will be hereinar'ter set forth, an more specifically pointed out in the claims.

In the accompanyingldrawings, Figure 1 is a perspective view oft e corner of a roll-top desk, showing the application of my improved shelf. Fig. 2 is a front elevation of the same. Fig. 3 is a plan view of the shelf and a corner of the roll-top desk with the shelf attached and swung u to a horizontal position at the side of the ask in solid lines and swung around to the front of the desk in dotted lines. 4 is a diminished end clevation looking to the left of Fig. 2. Fi 5 is an enlarged side elevation of one o the knucklejoints locked. Fig. 6 is a corresponding view with the joint unlocked and broken. Fig. 7 is a plan View of Fig. 5. Fig. Sis a bottom plan now of the locking-ring.

The same numerals of reference are used to indicate identical parts in all the figures.

, Suitably secured to the front and side of 6, to receive a sliding bar 18,

the desk at its corner are two horizontal mpports 1 and 2, Figs. 1, 2, ands, andordinary screws ma be employed for this purpose. The ends 0 these supportawhich staindat'an angle to the cornero the desk, as seen the dotted lines in Fig. 3, terminate in to ular sockets 3, in which is "ournaled, so as to turn freely, a. vertical spin le 4, having a shoulder 5 to limit its upward movement, and a cup shaped disk 6, resting upon the lower support 2, with which it engages by rncnnsnf notches 7, Figs. 2 and 8, the notches straddling the support and beveled on one side and the disk being preferably integral with the spindle 4.

Extending upward at an angle from near the lower end otthe s indle 4 is a brace-arm 8,and the to of boil the spindle and brace-arm, W ehare on a level, are: ovided with perfiorated ears 9, which ey may be screwed to-the under si e of a bringing-sapport, or What I call thestnbshelfi --a narrow board 10,120 which the main shelf ll is securely hinged, as at 12, Fi 2.

To brace and secure hol the shelf 11, so that its surface she I be c with the surface of the stub-shelf 10, I provide a pair of arms 13, ivoted, as at 14, to the under side of the s elf 11 on each side and near its outer edge, as seen in Fi 2 and 4. These arms are parallel, and t eir lower ends are pivoted, as at 15, Figs. 5 and 6, to two other similar arms 16, the one farthest from the s indie bein bent inward toward the spine and hot being pivoted at their lower ends to the disk 6, as seen in Fig. 4. The upper ends of the arms 16 project beyond their pivotal points 15, so as to overlap the arms 13, and their ends are slotted, as at 17, Fig. ided in a slot 19, extending longitudinally 111 each of the bars 13 and held in place by washers 20 upon its outer ends, and which bar when the arms 16 and 13 are brought into alinement by the lifting of the table 11 is slipped down into the slots 17 and forms a lock, the whole structure comprisin what I call a knuckle-joint, and as a 't to revent the arms 13 from being raised too In h pins 21 on the arms 16 enter and engage s ots 22 in the arms 13, as seen in F' 5 and 6.

It will e observed that the spindle 4 is stepped inthe socket of the support 2 through IDD , and very durable, and to o the interposed disk 6, and the weight of the shaft when one of the disk-notches engages said support serves to hold the shelf locked in either of its adjusted positionsnamely, that shown by the solid lines in Fig. 3, where the shelf is parallel with the front of the desk, or that shown by the dotted lines in the same figure, where the shelf is swung around for the use of the occupant of the desk.

It will be observed that the top of the shelf is slightly below the usual slidlng shelf 23, which fits in a socket in the body of the desk.

It will be seen from the foregoing description and the illustrations that I have provided an adjustable swinging shelf which is exceedingly simple in construction, is cheap, crate it in swin in it is only necessary to ift it very slightl y til the locking-notch is disengaged from the bracket 2, whenit may be turned freely, and to lower the shelf 11 out of the way at the side of the desk it is only necessary to slide the rod 18 out of the notches 17, whencthe knuckle-joint will be broken and the shelf can be lowered to the position indicated by the dotted lines in Fi Having thus fully 5 I claim 1. In a swinging desk-shelf, the combination of a vertical spindle, with a horizontal extension, journaled at the corner of the desk, a stub-shelf secured to the to of said horizontal extension, a shelf hinge to said stub shelf, means for locking said hinged shelf when raised to a. horizontal position and for permitting the shelf to be lowered, and locking means between said spindle and one of its ournals, substantially as described.

1. escribed my invention,

2. In a swinging desk-shelf, the combina* tion of a supporting-s indle jourraled to the corner of the desk an having longitudinal as well as rotary movement, a horizontal stubshelf secured to the to of said spindle, a shelf hinged to said stublielf, means for lockin said hinged shelf when raised to a horizontfi osition and for ermitting the shelf to be owered, and 100 ng means between said spindle and one of its journals, substantially as described.

3. In a swinging desk-shelf, the combination of a supportingindle journaled to the corner of the desk and having longitudinal as well as rotary movement, a horizontal stubshelf secured to the to of said spindle, a shelf hin ed to said stub-slielf, means for locking sair? hinged shelf when raised to a horizontal position and for permitting the shelf to be owered, and a dlsk fast upon said sindle with notches to engage a locking mem er on the desk, substantially as described.

4. The herein described swingin deskshelf com rising the supports 1 am? 2, the spindle 4 ournaled therein with slight longitudinal movement, the arm 8 projecting from said spindle, the notched disk 6 fast upon said s indle and engaging the su port 2, the stubelf 10 fast u on the top 0 the spindle and arm 8, the shef 11 hinged to the stub shelf 10 and the knuckle-j ointed arms 13 and 16 hinged at their upper ends to the shelf 11 and at their lower ends to the disk 6, substantially as and for the pur ose s ecified.

CH ISTI N KECK.

Witnesses:

EDWARD SUssnoRF, BESSIE K. LAvAN.

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