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Publication numberUS1213299 A
Publication typeGrant
Publication dateJan 23, 1917
Filing dateSep 30, 1912
Priority dateSep 30, 1912
Publication numberUS 1213299 A, US 1213299A, US-A-1213299, US1213299 A, US1213299A
InventorsMartin Thum
Original AssigneeLangslow Fowler Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1213299 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)


I cum.


' Snmzwtoz Mariz'izmm Patented Jan. 23,1917.




Patented Jan. 23, 1917.


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Specification of Letters Patent.

Application fil ed September 30, 1912. Serial No. 723,115.

To all whom it may concern Be it known that I, MARTIN Timer, 2. citizen of the United-States, and a resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Chairs; and I do hereby declare the following to be-afull, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reierencenumerals marked thereon.

My invention relates to chairs, having reference particularly to that class of chairs used by school children to serve both as a chair and desk, and it has for its object to provides. novel and improved construction that will efiiciently serve the purposes of a chair and desk, having provision for holding books and utensils, and also for supporting any books or papers while the student is'working.

ii turther object of my invention is to construct the parts so that they may be conveniently adjusted to diiierent sizes, so that a standard chair may be used.

- To these and other ends the invention consists in certain improvements and combinations of parts all as will be hereinafter more fully described, the novel features being I pointed out in the claims at the end of the specification.

In the drawings: Figure 1 is a side elevation of a. chair embodying a preferred form of my invention; Fig. 2 is a view in front elevation of the same; Fig. 3 is a plan view; Fig. 4 is a sectional View of the support, or receptacle,.showing it open; Fig. 5 is a detail View in elevation of the adjustable connection between the work table and its support; Fig. 6 is a sectional view on the line 6 -6 of'Fig. 5; liirg. 7 is a sectional view on the line 7 of Fig. 2, and Fig.

ring a'djustable connection with the stand ard in any suitable manner.

The seat portion 2 carries a support, or receptacle 5 on which is mounted a work table 6, 'in amanner that I will describe presently. The receptacle 5 is preferably formed as shown in Fig, 4, and constitutes a receiver for hooks and utensils when they are not in use. To this end, it is provided with a base or bottom portion 7 upon which is pivoted a holder 8, the latter having a slde portion 9 constituting a'cover for the receptacle. 10 is astop arranged Within the receptacle, for limiting the outward movement of the holder Sand adapted to engage the inner wall of the latter. The holder is so pivoted upon the base portion 7 of the receptacle that it is retained in extreme open Patented Jan. 23,1917.

or closed position by its own weight, and I when it is closed, it may be opened by applying pressure against the lower end 'of the wall 9.

The work table is preferably arranged on the 511 J )Oltor rece )tacle 5 as ireviouslv I mentioned, and to this end, the latter is provided with a post 11 which is mounted in the brackets 12 secured to the support. The post 11. carries at its upper end a laterally extending, rod 13, which is pimtally mounted in brackets 14 secured to the under side of the work table.

15'is a brace which extends through the post 11, and is attached at its ends to the rod 13 so as to hold the latter rigidly in position on the 'post.- In order to hold the work table in various positions, I provide an adjustable connection between it and-the support, and

to this end, the post 11 carries an upstanding rod 16, pivotally connected thereto, and having a pin or. projection 17 for a purpose thatwill presently appear. The work table is provided with a pivotally mounted bracket 181 within which is rotatably sup ported the sleeve 19, the latter being cut away and provided with a rack or toothed surface 20 which is arranged for engagement with the aforementioned projection 17 whereby the sleeve 19, and with it the work table, may be raised to different vertical positions. in order to effect this adjuste ment, the rotatable sleeve 19 carries the crank arm 21 with which is connected or push rod 22, held in normal position by, 'means of the spring and carrying a finger-piece 2% by which it is manipulated when it is desired to turn the sleeve in order to change the position of the work table.

To hold the post 11 in fixed position on the support 5, there is provided a clamping collar which surrounds the post 11, as shown in Figs, 1 and 7, and carries a neck portion 26 projecting into the opening '27 of the receptacle and fixedly attached to the rod 28 in any desirable manner as by means of the pin or rivet 29. The rod 28 extends through the support 5 and is threaded at its free end, while 30 is an adjusting nut in engagement with the threaded end of the rod By turning the adjusting nut 30 upon the rod 28, the clamping collar is drawn inwardlytoward the receptacle 5, forcing the post 11 against the edges of the brackets 12 and holding it rigidly in adjusted position. By loosening the nut 30, the post 11 may be moved upwardly or downwardly to adjust it to differentvertical positions. The support or receptacle 5, may be attached to the seat portion 2 in any convenient manner and in the present embodiment, I have shown brackets 31 for this purpose, these being suitably attached to theseat and to the support.

I claim as my invention: ,4

1. In combination with the seat portion of a chair, a receptacle supported thereon, a post slidable in guides at the front of the receptacle, a work table carried by said post, clamping means engaging said post and pressing it against its guides, a rod connected to said clamping means and extending through the receptacle to the rear there of, and means at the rear of the receptacle for adjusting said rod and the clamping means with relation to the post. i

' 2. Incombination with theseat portion of a .chair, of a post associated therewith, a Work table pivotally mounted on the post, a rod pivotally connected to the post intermediate its ends, a sleeve rotatably and pivotally connected with the work table in slidable engagement with said rod, cooperating projections on the rod and sleeve adapted to normally hold said members in locked engagementone with the other, an arm connected with the sleeve and a spring controlled member pivotally connected with said arm for effecting rotation of the sleeve to permit adjustment of the same upon said rod. 3. An adjustable chair comprising a seat; a support mounted thereon,a post slidable in guides upon the support, clamping meansengaging the post arranged to press the Same against its guides, a work table pivotally mounted ion-the post,a rod pivotally connected to the post intermediate its ends, a sleeve rotatably and pivotally attached to the work table having slidable engagement with said rod andadapted to be normally held in locked engagement therewith, an arm connected with the sleeve and a spring controlled member pivotally connected with said arm for effeeting rotation of the sleeve to permit adjustment of the same upon the rod.

4. In combination with the seat portion of a chair, of a. post associated therewith, a work table pivotally mounted on said post, a rod pivotally connected to the post intermediate its ends, a sleeve rotatably and pivotally arranged on the work table having slidable engagement with said rod,and'

adapted to be held in locked relation therewith, an arm carried by the sleeve, a bracket on the Work table, an actuating rodco'nnected to said arm and movable within an opening in the bracket, and means for re taining the actuating rod in normal posi tion whereby the sleeve is held in looking engagement with the first mentioned rod.

MARTIN THUMQ Witnesses H. E. S'roNnnni-mnn, RUSSELL B". GRIFFITH.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2497001 *Feb 21, 1946Feb 7, 1950Ross CowsertCombination furniture
US3832001 *Apr 19, 1973Aug 27, 1974Raymond Lee Organization IncCombination office furniture
US7314248 *Mar 3, 2005Jan 1, 2008Robert Alan MabonPortable workstation
US20060197362 *Mar 3, 2005Sep 7, 2006Mabon Robert APortable workstation
U.S. Classification297/170, 297/188.2
Cooperative ClassificationA47B83/02