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Publication numberUS1137261 A
Publication typeGrant
Publication date27 Apr 1915
Filing date19 Sep 1913
Priority date19 Sep 1913
Publication numberUS 1137261 A, US 1137261A, US-A-1137261, US1137261 A, US1137261A
InventorsDarrell Frank Dyke
Original AssigneeClemetsen Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Type-writer support for desks.
US 1137261 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Patented Apr. 27, 1915.l





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1 1 37,26 l Patented Apr. 27, 1915.


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APPLICATION mm sEPT.19. |913.

1 1 37,26 1.. Patented Apr. 27, 1915.



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ToaZZywh-om it may concern Be it known that I, DARRELL FRANK DYKE, a citizen of the United States, residing at-Chicago, in the county of Cook and ,State of Illinois, have invented certain new and useful Improvements in Type-Writer I Supports for Desks, ofwhich the following is aspecication, reference being had to the accompanying drawings, forming a part thereof.

lThe purposeof this invention is to provide a support for a typewriting machine or similar oiice device a'dapted to be incorporated in a desk of practically standard design. y

It consists of the features and elements described and shown in the drawings as indicated by the claims.

In vthe drawingsz-Figure 1 isa partial front elevation of a desk showing the typewriter support in position for use and indicating the Iposition of the machine on it in dotted lines. Fig. Qfis an end elevation of the desk shown in Fig. l, including in dotted lines a view of the typewriter and its support in its position out of. use within the desk pedestal. Fig. 3 is a section taken as indicated at line 3-3 on Fig. 1. Fig. 4 is a section taken at the. sameplane as Fig. 3 but showing the parts in closed position. Fig. 5 is a section taken as indicated at line 5--5 on Fig. 8 showing the yoperating parts in plan. Fig. 6 is a detail section of the pedestal door fittings, being taken as indicated at line 6 6 on Fig. 8. Figs. 7 and 8 are plan and elevation respectively of the door fittings. Figs. 9 and 10 vare detail views', being s ide.and front elevations respectively of a supporting' catch for the typewriter tablet. Figs. 11 and 12 are elevation and plan respectively-cfa retaining catch for the typewriter tablet.

: The desk, 1, illustrated inthe drawings is' -of the common pedestal type now in general use, and by virtue of the-devices 'whlch are the subject of this invention .one of its pedestals, 2, is adaptedv to serve as a housing for a typewriting machine, 3, the flatter being so mounted that it may -be-fwithdrawn from such' housing at will :and ysupported upon a'tablet, A, in position for use. The tablet, A, is so mounted that in emerging from or recedinginto the housing pedQStl,

Specification of Letters Patent.

PatentedApr. 27, 1915.

Application filed September 19, 1913. Serial No. 790,634.

2, of the desk, 1, it will remain always in horizontal position so as to avoid disturbing the machine carried upon it. For this purpose the tablet is hung in the pedestal upon a system of parallel links, B and C, pivotally connected to fulcrum plates, D, rigidly mounted upon the respective side walls, 2a, of the pedestal, 2. The tablet, A, ismformed with grooved edges, A1, reinfnrced by metal channels, A2, serving as runways for. the supporting rollers, E, of the carrying plates, F. These carrying plates are in turnsupported by pivotal connection with the ends of the parallel links, B and C; thus starting from the position illustrated in Fig. 3 the tablet, A, may be swung downwardly ,and rearwardly upon the links, B and C, and pushed back into the housing of the pedestal, 2, upon its supporting rollers, E, arriving finally at the position illustrated in Fig. 4.v l

Throughout the movement above described the tablet, A, and the machine carried by it.

are counterbalanced by means of springs, G, anchored 1n the lower frame members, 2b,

of the pedestal, 2, and connected to the eX- of counterbalancing effect throughout the swingingmovement of the links. Preferably the springs are strong enough to actually lift the weightof the tablet, A, and the machine, 3, fromy its lower position to the position of use, thus minimizing the eifort ofthe operator.v vWhen the tablet is lowered away and' pushed back into the pedestal housing an auxiliary roler, H, on each of the4 links, C, engages the corresponding channel, A2, and thus prevents the springs, (i, from elevating the tablet, A, and its load within the housing, even though such load is carried at a shorter'leverage when the tablet, A,is thus slid to its final Position.

The tablet, A, is steadied in its position of use, shown` in Fig. 3, by the engagement of the hooks, J onsaid tablet with the catches, K, su ended from the underside 4of the desk top. As the tablet, A, rises tothis position the hooks, J, come/opposite the notches, K1,`

of the catches, K, and by means of springs,

the rear end of the tablet (.see Fig. l1) pre@ vents it from being pushed back upon its rollers into the pedestal housing. .In the downward swing of the links this catch, N, is linally released by contact of the link, C, with a projecting lug, N1, whereby it is raised out of engagement with the end of the tablet to permit' thelatter to be. pushed.

into the pedestal housing. Somewhatsimilarly the catch is released at fthe upper limit v soy of the swing ot the links, B and C, by con-Y tact of another lug, N2, with the link, B, and this permits the tablet to be retracted by the springs, L, L, and engaged by the hooks, K, K, as above described.

It may be noted that the simplicity of the mounting of the tablet-supporting devices within the pedestal housing will greatly facilitate assembling. Since the two sets of arallel links, B and C, are connected across .y tie rods, M, M, engaging the carrying plates, F, and by an additional tie rod, O, connecting the extending ends, C1, of the links, C, the entire device may be mounted l in position by securing the fulcrum plates, D, D, to the respective side walls of the pedestal, and anchoring the ends of the springs, G, as indicated at G1.

' For closing the front of the pedestal housingl there is shown a door, "P,- pivotally carried near its lower edge upon rollers, Q, engagin the vertical and horizontal Hanges, R1 and i2, of guide plates, R, mounted on the side walls of the pedestal; the door, P, is further provided with hook-shaped plates, S, designed to engage the fianges,jR2, for further supporting the door in its horizontal position, illustrated in Fig. 3, and to admit these hooks, S, to said position the vertical flange, R1, of the plate, R, is notched or discontinued near the corner of the plate as indicated in Fig. 8. A Hat spring, T, projecting at the lower end of the door, P, will engage the underside of the ange, R2, so as to effect the guidance of the hooks, S, into engagement with said flange as the door is swung down and .pushed back into the pedestal housing.

I claim A 1.y In combination with a-housing, a movable tablet and supporting means therefor, comprising a system of parallel links pivoted on either side wall of the housing, carrylng 'of the carryin plates pivoted at the free ends of the links in each system, means on .said carrying plates adapted to slidably engage the lateral edges of the tablet at two points longitudinally separated to permit horizontal movement 'of said tablet with respect to the plates, and means on one ofthe links intermediate of its pivots adapted to engage one of said lateral edges of the tablet at a third point during its sliding movement.

2. In combination with aI housing, a movable tablet; carrying plates and a system of parallel links connectmg the plates with the side walls of the housing for up-and-down movement of the plates by swinging movement of the links; means by which` the tablet is engaged I with the vcarrying plates for horizontalv` -sliding with respect thereto, adapted to permit the tablet to be protruded from the housing; a catch-mounted on one aontally extended position during the swinging movement of the links, said catch being formed and positioned for encounter with one of the links at the upper limit of their swinging movement for disengagement of the catch to release the tablet, and coperating devicesv on the tablet and housing, positioned for 'engagement of the tablet with the housing upon inward sliding of the tablet upon its release from the catch.

` 3. In combination with a housing, a movable tablet; carrying plates and a system of parallel linksconnecting the plates with the side walls of the housing for' up-and-down movement of the plates by swinging movement of the links; means by which the tablet is engaged with the carrying plates for horizontal slidingA with respect thereto, adapted to permit the tablet to be lprotruded from thefhousing; a catch mounted on one of the carrying plates positioned and adapted for locking the tablet at horizontally extended position during the swinging movement of the links, said catch bng formed and positioned for encounter with one of the links at the lower iimit and with the other link onV the same side at the upper limit of said swin 'ng movement for releasing the tablet at said limits respectively.

' 4. In combination with a housing, a movable tablet and supporting `means therefor,

plates positioned and vadapted for loc ing the tablet at horicomprising carrying plates slidably engagingthe lateral edges of the tablet to permit horizontal extension thereof from the housing, and means whereby said carrying plates.vv l

are mounted in the housing to permit vertical movement of the tablet, a spring stop positioned to limit the horizontal extension of the tablet, a controlling catch on one of thecarrying plates adapted to lock the tablet at its extreme limit of extension during the vertical movement of said carrying plates, a horizontally engageable hoek device positioned for positively supporting said tablet ln testimony 'whereof have hereunto set at its upper limit of .mow/ernmenti and means my hand at Chicago, lhns, thls 16th day fo automatically releasing the controlling of Sept., 1913.

cateli' at the upper limit of the vertical D., FRANK DYKE. 5 movement to permit retraction of the tablet Witnesses:

by theA spring stop for engaging the hook FRANK JC SENG,

device. Jem M., moet.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2428211 *17 Apr 194430 Sep 1947Seng CoDesk having an extensible support for a typewriter
US2656234 *29 Sep 194920 Oct 1953Koch Clarence WLock for typewriter desks
US2676077 *24 Feb 195120 Apr 1954Carl Mcmahan WalterTypewriter lift mechanism
US2738247 *4 Dec 195213 Mar 1956Corry Jamestown Mfg CorpSuspension for extendable typewriter shelf
US2822229 *2 Aug 19544 Feb 1958Washington Steel Products IncSwinging shelf support
US2919966 *1 Apr 19575 Jan 1960Acme Appliance Mfg CompanyRetractable shelf
US4145096 *21 Sep 197720 Mar 1979U.S. Philips CorporationDual pivoting panel closure
US4625657 *15 May 19842 Dec 1986Weber-Knapp CompanyAdjustable keyboard supporting mechanism
US5257767 *21 Jul 19922 Nov 1993Waterloo Furniture Components, Ltd.Adjustable support mechanism for a keyboard platform
U.S. Classification312/27
Cooperative ClassificationA47B21/02