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Publication numberUS939764 A
Publication typeGrant
Publication dateNov 9, 1909
Filing dateApr 9, 1909
Priority dateApr 9, 1909
Publication numberUS 939764 A, US 939764A, US-A-939764, US939764 A, US939764A
InventorsAlbert L Henry, Thomas E Vickers
Original AssigneeAlbert L Henry, Thomas E Vickers
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Detachable book-rest for chairs.
US 939764 A
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Description  (OCR text may contain errors)




Patented NOV. 9, 1909.


vi names s ra'rns PATENT ornicn THOMAS E. VICKERS AND ALBERT I.



7 Detachable Book-Rest for Chairs, of which the following is a specification.

The objects of the invention are, generally, the provision in a merchantable form, of a device of the class abovementioned which shall be iieirpensive to manufacture, facile in operat on and devoid of complicated parts; specifically, the provision of an armboard adapted to be assembled with a chair; of novel means for supporting thesaid armboard upon chairs of different dimensions; of a lap-board and a'leg therefor, adapted to be assembled with the arm-board; the lapboard and the leg being arranged to'be housed in a novel and improved manner A when not in use; other and further objects being made manifest hereinafter as the description of the invention progresses.

The invention consists in the novel construction and arrangement of parts hereinafter described, delineated in the accompanyin drawings and particularly pointed out in t at portion of this instrument wherein patenta'b'le novelty is claimed for certain distinctive and peculiar features of the device, it being understood that, within the scope of what hereinafter thus is claimed, divers changes in the form, proportions, size andminor details of thestructure may be made Without departing from the spirit or sacrificing any of the advantages of the invention.

Similar numerals of reference are employed to denote correspondin parts throughout the several figures of t e drawings.

In the accompanying drawings, Figure 1 shows my invention in perspective, and Fig. 2 is a side elevation thereof, the lap-board being dropped into depending position, and

the leg which supports the lap-board, being I lawn-board against lateral movement in a housed beneath the arm-board.

In carrying out our invention We provide, prin'mrily, a pair of support-engaging clamps, one of which is adapted to engage the rear leg 2 of a chair 1, the other being adapted to engage the front leg 3 thereof. The clamp which is adapted to be assembled with the rear leg of the chair comprises a pair of jaws 4. One of these'jaws is pro- Specification of Letters Patent.

Application filed April 9,

Patented Nov; 9, 1909. 1909. Serial No. 488,973

vided at its upper extremity with an arm 5, radially disposed, and arranged to serve as a support for the arm-hoard 9 with which it is rigidly assembled. The other of the jaws t is provided with an arm 6 which 1s pivotally connected with the arm 5. The jaws tare trough-shaped in order that they may readily engage the leg of the chair, and are provided adjacent their contacting edges with outwardly extending lugs f?- apertured in alinement to receive a set-screw 8 whereby the jaws may be clamped upon the chair. The clamp which is arranged to be assembled with the front leg of-the chair comprises a pair of separable members having atone end, cooperating jaws 10 arranged to engage the leg of the chair and at the (other end having coiiperating jaws 12 adapted to receive a standard 17. The, jaws 10 and 12 are connected by straight arms 11 A set-screw 1% is passed transversely through the portions 11 and serves to assemble the parts of the clamp with eachother, and to a cause the said clamp to exercise its holding function.

Mounted upon the lower face of the arm board 9 are parallel guide plates 16 spaced from (the lower surface of the arm-boardtl by blocks 15, which, if desired, me be fashioned integral with the said guldep ates The standard 17 comprises a straight shank adapted to be received between the ,jaws 12' of the clamp which is assembled with the front leg of the chair. The standard terminates at its upper extremity in a Y shaped head 18, the extremities of the head being connected by a straight bar 26. This head 18 is adapted to slide upon the guide plates 16 longitudinally of the armboard 9 in order that the ,device may be mounted upon chairs of different dimensions. .The guide plates 16, while thus permitting a sliding movement of the standard 17 upon the'arm-hmu'd J are so positioned within the head 18, contacting with it at its 17 upon the arm-board and to hold the said chair, as clearly shown in Fi 2 and this 9 extends outward beyond the front of the v extended portion is provided with a support- 7 ing element 19 upon which. is pivoted, intermediate its ends, a cross-piece 20. To this cross-piece is hinged a lapwboard 21 adapted to extend across the front, of the chair Adjacent the free extremity of the lap-hoard 21 and upon the lower surface thereof are mounted ears 22 between which is pivoted a leg arranged to support the lapboard when the device is in the position shown in Fig. 1. hular member 23 within which is telescopcd the lower extremity 24 ot' the leg. This telescoping lea enables the device to he used upon chairs of ditterent heights, and to be applied at different heights upon the same chair, the portions 23 and Q4- of said leg being maintained in the desired position, after adjustnwnh, by means of'a set screw 25 which is carried by the lower extremity of the tubular portion It is obvious that the lap-hoard 21 may be swung laterally upon the supporting element 19 to enable the occupant of the chair to leave the same, and when it is desired to discontinue the use of the lap-hoard, the same may be dropped into the depending position shown in Fig 2, beneath the arm-board 9, the leg being upturned, its extremity resting between the front leg 3 of the chair and the standard 1?, upon the portion 11 of the clamp which unites those members.

The device presents in a simple and compact form, a desk adapted to be used to support reading matter and writing materials. It may be readily applied to any common form of chair, and may quickly be extended for nsc,-a. shown in Fig. 1 or housed, when in use as shown in Fig. 2.

l'lzn-ing thus described the inyention, what; we claim as new and desire to protect. by Letters Patent is:----

l. A device of the class described comprising a pair of support-engaging clan'ips; an arn'i-board terminally assembled with one of said clamps; and a depending standard pernianently assembled with the arnrhoard and ad iustabie thereon long tudinally of the This leg comprises a tueaeyee armboard, the standard being engageable by the other of said clamps.

25A device of the class described comprising a pair of support-engaging clamps; an arm-hoard terminaily assembled with one of said clamps; a guide plate mounted longitudinally of the arm-board upon the lower face thereof andspaced tllQl'CflUlD; :nd a

iandard arranged to be engaged by the other of said clamps, and having a head to engage and to slide upon the-guide plate.

3. A. device of the class described com-- prising a pair of support engaging clamps; an arm-board terminally assembled withon at said clamps; a depending standard permanently assembled with the min-board and adjustable thereon longitudinally oi the arnrboard, the standard being cngageahle by the other of said clamps; a lap-hoard swiveled to one end of the arm-hoard; and a telescoping leg hinged to the free e.\'- tremity of the lap-board.

t. A device of the class described comprising a pair of support-cngaging clamps; an arm-board terminally assembled with one of said clamps; a depending stamlard permanently assembled with the arm-board and adjustable thereon longitudinally of the arm-board, the standard being engageable by the other of said clamps; a lap-board swiveled upon one end of the arnrhoard:

nd a leg hinged to the free end of the lapboard; the cap board being ti'ltahle intodepending position beneath tlle-arnr-board and the leg being engageable by the stand.- ard-supporting clamp when the lap-hoard isin depending position.

In testimony that We claim the foregoing as our own, we have hereto aitixed or signatures in the presence of two witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2804126 *Oct 8, 1954Aug 27, 1957Palmer Lavinia JDetachable and foldable table accessory for armless chairs
US3284132 *Jul 1, 1965Nov 8, 1966Clarin Mfg CoSeating unit
US4735152 *Jun 25, 1987Apr 5, 1988Bricker Products, Inc.Cantilever shelf
International ClassificationA47C7/68
Cooperative ClassificationA47C7/68
European ClassificationA47C7/68