US278152A - larsot - Google Patents

Description

NdMoael.)

C. LARSUN'.

DESK,

Pate-d Ma zo so es to eliow the. pigeonhoiee to hrst y showing the grooves.

4p Fig. 5 is n.4 similar view,

5o B is e shorter curved groove,

. esk embodying my invention.

onnis'roenon y Lenses', on

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'asten nity' ee, ieee.

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To all whom. it may concern'rj Bs it known that I, ontnomen/Lennon,

e toitiiren of the United States foi'; America, resjdingat Chicagoin the connty'oi' 44@ooit goed: etats ofvlilinois, haveinventeri certein 'fnew aii'usefnlvlmprovements in Desks, o

whieh lthe'voliowin-g is a. speciiieetion', refe# erenoe' being had therein to the accompanying drawings.

My i in desks of thatkind in which the pigeon-holes upon one or both sides lcan be iii-evan ior-y war, and then swung' around at rightfengiee, v so ras/to stand in n line with the front of the 5 desk; and 'my invention consists in thecornbinetion of the bottom of the desk, having nnitnhle grooves formed therein, ,with the hot-A tom ofthe pigeon-holes, provineii. with .three oeusorprojeotiis whiehentoh in theo 7 be drown forward, and then be swung around et right angles, as wili be more fully described hereinafter. l

4The object of my invention is to do away with the many moving parte heretofore empioyed in oonneetionwith moving the pigeon- 'hoies of the desk, and substitute-therefor i simple vgrooves and projections which can neither be broken" nor gotten 'ont oi' order, and

o which cheapen and simplify the cmistrnotitmI of the desk to a very great extent.

Figure 1- is a. side eievntion of one enil oi' o Figfii is o, bottom -oi the desk, Fig. 3 is o. detached view of Ithe bottoni oi' the pigeon--holes, shoei ing the projections. Fig.'4 is e pion view of the two parts, showing them in their relative positions when the pigeon-holes are eloseil. showing the ports in when the pigeon-holes turned around at right detachedl view of the their' relative positions ere drawn oiitwarrl and ongles.

A represents the bottom of the desk, upon the rtop of which the pigeon-holes reet, enti which has cnt in its top the long curved groove B. From the end yot this -enrved groove extends bnckx'vnroi the short curved- U. Running parnilei with the groove groove D, and passing invention reletes to enimprovement.

outward from the groove B, D, is the fourth ycurved groove, grooves m ey he linen with he formen in e costing, ythe top of the bottom A'.

across the groove F. These which is insertan in Projecting from the.

holes ore three projections, l piaceri in 'e iine or almost in e' iino with each other, While the third one is pinned et e'snito .ble vdietnnco to one eine. When the pigeonjeotions whieh are catch in the ourveci groove B, while the prei jectionl which ie piocetito one side .eetches in the curved groove D. When the pigeon-holes are being drawn ont they i'oiiow the onrvo of front projection and fthe proie-ation which is ,ifo one 'eine strike the omis of the -siots B D the pigeonfholee are in the position shown in riottediines. in this position tlie projection which catches in tho 'groove D serves both yne espositive stop against any further outward movement oi' thepigeon-holes and as the pivot upon which the pigeon-holes now torn. By pressing inward upon theoutcr edge ot' the pigeon-holes the two projections which are in line .with' each other swing around" into the two slots G F until they strike the ends ot' the slots, where theyform' Stops to prevent any i'nr'tller movement of the pigeon-holes. The iength of these slots is ndjneted so that the pigeon-linien um move around upon the pivotei projection nntil only their front erige is in n direct line with the iront of the desir. in returning the' pigeonhoies to place they innst iirst he turned ont ward as ihr ns the tivo projections' which are in niine with erich other wili allow, and this movement brings those two project-ions back into the groove. 13. By pushing backward noon the pigeon-holes they slide hack into position. in the above-describe movement it will be seen that the projection which is piaceri to one eide of the other two never ienves ite slot, while the other tivo projeotions 'leave the siot i3 noti nieve in the slots U F when the pigeon-holenaro swung around. These projections moy be formell oi' rollers, or

have rollers pinned upon them in any suitable metal;- or they tney the niets in their movements, and. when theslsf,- nnrier side of the bottom (i of the pigeon- Ltwoot' which are* iiles ero foroeti heck in lposition the two pro-.f

in o. line with each other fnianner for the" nurpose of moving: them 'more lHaving, time)v descrbedmy lili've'ntong'jl` z In a desk, the combination of the bot-tomfof 'the desk, having the grooves B C D F, with the -bottomof the pigeon-holes, having the three projections to catch in the grooves, substantinily ashown and described;

i cams; LARSION.

Witnesses: T. N. BIGLIN,

WM. A. J onNsoN.

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