US1860058A - Adjustable headrest - Google Patents

Description

May 24, 1932. A. R. scHwAzKoPF ADJUSTABLE HEADREST Filed Maxfoh 15. 1950 IIIIIIIIIIIII@IHIHIHJ- 1'" .JIIIIMEBMHHIIINI/lf ARTHURjR-f SCHWARZKPF, OF CHICAGO,

. may be reinforced by braces 13. The endV Patented May 24,` 1932 y PATE? ILLINOIS,

` ADJUSTABLE .HEADREsT applicativa 'sied Marea.' 1930. seriarnaesaav.

and partly in sectiongf Figjf is aview 1n transveise section taken on line 2--2 of Fig.A l; and Y F ig. 3 is a sectional view,l takenas indicated by line 33 of Fig. 2L v The illustrated head rest which is pivotally supported on the upper end of a slide bar A includes a bracket bar B extending between end plates C which furnish support for a pad D. The slide bar may be. provided with a rack 5 for locking the head rest in a vertically adjusted position relative to the back of a chair, and, as shown, is provided at its upper` end with a hub 6 having'a series of circumferentia-lly arranged holes 7 through which a locking bolt 8 may be'projected for releasably locking the head rest in a desired rotative adjusted position. The bracket bar is equipped with a pair of depending lugs *'9 one lying upon either end of the hub to which a pivotal connection is made by a pin 10.

The bracketibar is in the form of an inverted arch having a horizontal portion 11 and upstanding end portions or brackets 12 which plates C are attached to the end portions asby screws 14. f

It will be noted that the bracket bar and the end plates form the skeleton or frame of the head rest7 and it is not necessary to con-5 nect the end plates neartheir` upper edges by tie rods to furnish adequate support. This eliminates the use of any rigid connecting members directly below the pad D which is accordingly free to flex downwardly, as desired. The end plates may be provided with hooks l5 -on their upper edges'to holdthe the opposite ends offcoill springs lGWhich support'the pad D. p f Y As'shownin'Fig". l, I provide thefbracket bar with a depending lugl y17 i formed with'a threaded openingjinto Vwhich ,is secured a 'i aries nssieNoR To'THEo. A. KocHs 5'5- bushinglS having acentral boref19 adapted@ v Vto furnish a bearing for one end of the locking bolt 8. y.The other end of the locking bolt is supportedin an aligned opening 20 in the 'i y proXimateflug "9. A finger piece21 is; trans-V versely apertured to receive thellocking bar to" which lit is pivotal'ly: connectedby a` pin 22E. The `upper end V230i the finger Piece-3X' Y tends into a socket-'.Qllin the bracket barso as' to have a fulcrunfi mounting therein. EX- tendingbetween'the 'finger piece` andthe bushing "is a compression` spring 25 sur-V` roundingxthe locking bolt and exerting a thrust on'the iingerpiece which tends to'hold the locking bolt .within one of the Vholes of the hub` 6.. `By Vthis vconstructionthe locking bar terminates shortof the end plate so.` as

to Vavoid contactjwithr the garment ofthe operator.

Mounted to the'rear'ofthe head rest,` and between the end plates, is a tear-oit' plate 26 having oneedgeserrated-as at 27. The tearoff baris connected at its ends to ahinge pini V23 Whose ends are ittedin suitableopenings i g so Y in the ends plates (not shown). A clamping bar29 which extends betweenthe end'plates is securedfthereto by screws which enter lugs l 3() Vextending inwardly from the'end. plates. rEhe-clamping bar29 is provided with spaced elongated Vteeth 31 which are in alignment Vwith 'openings 32 in the tear-off bar.' 5 AV spring `33 `holds the teareoifbar against the clamping bar to hold the paper 34 in place on padf A. suitable handle 35 may extendl from the' Vtear-'01T bar for releasing it from engagement with the clamping bar.4 (A

' The* paperw 34de rvsupplied from a .'roll which maybe supported'on a metallic spool 36 having-a flange 37 secured near'one end Y thereof; Carried by the spoolis awire springk 38 having its opposite ends infthe same direction. Onespring end 39 V is j C fitted snugly within an opening 'extendingv s Vtransversely-through the-bar, p kspring extremity 40 being then'tlattenedfor transversely bent i the protruding spring peened to lock the end of the spring in place. A. second transverse opening 4l is provided in the spool for loosely receiving the opposite or free bent Vend o' the spring which tends to how outwardly from the spool so as to engage with pressure a roll of paper mounted thereon. The spool is further provided at one end with fixed trunnion pin 42, adapted to enter a bearing ropening 43 in the proximate end plate. The opposite end of the. spool isprovided with a springpressed trunnion 44 having an enlarged head 45 slidably tted in a bore 46 in the spool. IA coil 47 bears against the end of the trunnion to force it outwardly. The trunnion is heldin theVL spoolby an inward crimping, as

at 48, of the edge adjacent its end.

` fo removethe .roll of paperythe operator grasps the roll and Vpresses to 4the right, as viewed in Fig. 3, whereupon the roll bears v against the flange whichis rigidly'attach'ed to the spool, moving the same against the spring 47, ,and disengaging the trunnion 42. VVEhe spool is then presseddownwardly and moved to the left so as to disenga'ge the. other trunnion 44. l Replacementof the roll requires merely a reverse operationin which one or both trunnions may be slid along cam surfaces 49 preliminary to entering the holes in which they are journaled. By means of these cam surfaces, the trunnions, or spool, are shifted endwiseas required to take up Y positions within the bearings provided therefor, lin

need be exercised in the handling of the roll during such a replacement operation.

It will be seen that the present device is 'made extremely rigid by virtue ofetheronepiece bracket bar which is constructed to sup port and brace lthe end plates. It will be "further noted that the bracket bar does not interfere in any way with flexing of the pad. The parts are, furthermore, so constructed and arranged as to be assembled and operated with the greatest ease.

f I claim: f

' 1. In combination with anadjustable head v rest, an arched bracket bar having depending lugs with aligned openings therein, an adjust'- able bearing bushingfin one lof the openings, la locking bar itted in the bearing bushing and remaining aligned opening, a finger piece vfulcrumed on said bracket bar and attached to the locking bar for operating the same, and aspring surrounding the locking bar between the finger piece and bearing bushing to urge the lockingvbolt to locked position. 2.v In a head rest, the combination of means upon. which af pad .is carried, a support piv-l otally connected to said means, lspaced bearconsequence of which no special-care 'crumed to said means and pivotally joined to the locking bar for operating the same, and a spring exerting opposite thrusts on the linger piece and bearing bushing adapted to.V

urge the locking bolt in one direction.y

' 3. In a head rest, the combination of a bar having arched braces connecting upstanding brackets at the ends of the bar and means Yfor adjustably connecting the bar to a sup- .whereby to provide an unobstructed space between the bracket means above the bar, and a resilient pad connected at its endsy to the upper ends of said bracket means andA adapted Vto flex into the unobstructed spacev above the bar.

In testimony whereof, I have hereuntoV set my hand this 10thV day of March, 1930. ARTHUR SCHWABZKOPF.

ings depending from said means, 'a lockingl bar' movablein the bearings parallel to the vpivotal connection for said means, one' of the bearings includinga bushing adjustably carried bysaid means, a Vfinger piece ful#

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