US 1686631 A
Description (OCR text may contain errors)
Oct. 9, 1928. 1 1,686,631
A. J. MAY
y HEADREST Filed May 18, 192s 2 sheets-.sheet 1 ocr, 9, 192s. f 1,686,631
A. J. MAY
HEADREST Filed May 18, 192:5 2 sheets-sheet 2 INVENTQR.
Patented oct. 9, 1928. f
UNITED STA TESY PATENT forrica.
ADAM' a. M aY, or ROCHESTER, NEW YORK, AssmivonjnY MEsNE nssrenmnitrs, To
RITTER DENTAL MFG. COMPANY, INC.,
.limiiieaumi med Mayis,
This invention relates to head-rests of the variety adapted, for example, for use with chairs or other articles of furniture, and more particularly with dentists chairs for supporting the head of the patient during an operation, oneobject of the invention being to proy vide a practical and eficient head-rest capable l of being quickly and conveniently adjusted through a Wide .range of differentypositions and securely yclamped in such positions. An# other object is the provision of such a headrest with an advantageous supporting .pad having a form of construction which is simple in character, comprising but a few parts, ivhich forms a comfortable and effective sup-y port for the head of the patient, and which maybe easily disassembledfor the purpose ot replacing the covering or other part. I
To these and otherendsv the invention resides in certain improvements and combina` tions of parts all as Willbe hereinafter more fully described, the `novel features being pointed'out in the claims aty the specification.
In'the drawings: n
1 is a rear elevation of a head-rest embodying the present invention.
Fig. 2 is a side elevation;
Fig. 3 is a view of parts shoi'vn in Fig.` 1 l unclanipedY and adjusted to a different posiy tion;
Ain Fig. 1;
Fig. 5 is a-sectional elevation on the line ,5a-5a inFig. 1;
Fig. 6 is a sectional view on line 6a-,61 in Fig. 5;
Fig. 7 is a sectional view on the line 7 a-7a in Fig. 5; 1 Y i v 8 is a sectional View on line 81-8i in- Fig. V2, showing the details of construction of thehead pad and its mounting, and
Fig. 9 is a'vievv of the rear side of the head pad, detached and partly broken away.
Similar reference numerals throughout the several views indicate the same parts. I The embodiment of the invention at present preferred, and herein disclosed byr Way of illustration of the principles involved, comprises a form of head rest Vparticularly suitable for usewithadentists chair, having a supporting means or brackets adapted for y attachment to the back of a chair, with parts adjustably connected with the bracket and chair. rmember 14 receives the journall of a substantially U-shaped part or arm 1T more par-V end of the Y Fig. 4 is a sectional. vieW on the line ift-4a OF ROCHESTER, NEVI YORK, A CORPOR-.r
' HEADRE ST.
1923 serial No. 639,884.
With eachother for rflexibly*supporting the pad' so that the latter may be easily4 adjustedv to the variousdiiferent positionsrequired in use. The supporting bracketis indicated at 10, Fig. 1, .as comprising a substantially plate t like body portion adapted'for attachment by any suitable means to an article of furniture,`
With an upwardly extending arm 11, curved horizontally as at 12 and terminating in a journal portion 16, Figs. l and 5.
v Adjustably supported on bracket'l() is a columnar or tubular member 14havinga longitudinally extending bore as shown in 5, with a transverse bearing opening. 15 at each end communicating With the longitudi-- nal bore. The'loiver bearing 15 receives the bracket journal 13 so that member 14 is pivotally supported on the latter for movement in the present instance toward and from the The upper bearing opening 15l of ticularly described hereafter which is thus supported on the'upper end of memberv 14 for pivotal movement toward and: from the chair. The axes of the pivotalv connections described above, between member 14, arm 17 j and bracketlO, thus lie in a V(.:ommon plane.
Arm 17 thus hasa pivotal movement on member 14 toward and from the chair and also a body movement with member 14 in the same direction on bracket'lO thereby providinga in opposite directions by clamping means described hereafter. The outer ends of the elements are Vcurved concavely as v.shovvn to conform With. the surfaces of the journals. .While ltheir contiguous inner ends are preferably V Shaped t0 Pl'Ovideinclined cam` surfaces adrig. 5. f f f vThe 'clamping means for the connections. of
member 14.y comprisespreferablyY a hollen" substantiallycylindrical memberv 21, Fig. 5.
yvvide range of ,adjustibilityY for the .head pad in this direction or plane, and effective'means.
are provided for clamping these parts in posi j ltion after adjustment. l Y
I claim as my invention-'z screw being carried by an .enlargement orv mounting 5G formed at the ends of the inner yoke lill. Mounting 56 has a flange 57 projecting toward'the rearsideof the pad ando'f a diameter snlneient for enclosingthe securing'hooks 53 ofthe outer pad covering sheet as shown.' Then the pad backing is `,drawn home on its mounting' by means of screw 55, flange 5'? reflects the sheet por 4ion on the rear side ofthe pad thereby increasing the tautness withv which the 'sheets are preli'mif narilyapplied.' ThisL construction provides between the covering material on the forward side oi' the padand the. depressed intermediate portions 'of theA backing a substantially air tight chamber 5'"a which the air is compressed by impact of an object on the pad to increase the cushioning etlect and also support theA covering.l The construction described affords a padfot a simple and economical form comprising but- 'few parts combining softness and.co1nfort for the head ot the 'patient with the'requisite'strength and durability, and the covering material may be quickly and conveniently yremoved and replaced as conditions may require.V The pad is at'thesame time compact and ofa neat pearance. j Y j j The'operation of the head rest vhas been ej;- pla'ined indetail'in connection' withfthe description or" its construction and it is 'clear that by swinging handle upwardly member le may bek unclamped and swungA pivotally toward and from the chair. AArm 17 mayl be similarly swung on member to adjust the location and angular position of the pads as desired. l/Vhen so adjusted these parts are rigidly clampedin position by depressing the handle. Also by manipulation of handle the pad supporting yolres are released for movement onthe parallel motion linkage laterally ofthe'chair andreclamped of course swings within the outeryoke, all ot these adjustments affording an enceedingly flexible support Jor the pads which is also easily manipulated and clamped. [The pads are simple and economical in construction providing a soft and comfortablesupporting surface combining effectively with the flexibility of the surface'to afford an advantageous and efficient apparatus.v *Y
l. 'In a head rest, the combination a supbracket, a head rest having an adjustable connection with the other endY of said'membeig ap-A thrust elements extending longitudinally in said member with their inner ends spaced one said adjustable'connections,respectively,nonrotatable wedge means interposed between said inner ends vfor atransverse sliding movenient between said elements to bring their outer ends intol clamping cooperation with said adjustable connections, and Inaniul'ativel means including a pivotal elementadapted to slide said wedge means transversely between said thrust elements.'
vj 2. In. a head rest, the combination of supporting means provided withfa-'journah head rest provided with a journal, acolum'nar' member having transverse bearings at its ends for said journals, respectively, a-pair of thrust elements extending longitudinally :in said member with their inner ends spaced one from the other and their outer ends adjacent the respective journals, clamping means slidable between said elements for forcing them longitudinally in opposite directions into engagement with said journalsfto clamp the latter immovably in their bearings and a pivv otedcam for actuating lsaid slidable clampmg means. 1 Y 3. In ahead rest, Vthe combination ofsupporting means provided with ,a journal, a head rest provided with a journal, a tubular fmember having at its ends bearingopenings porting-means provided with aijournal, a
head rest provided with aj ournal, a columnar member having transverse bearings at its ends for said journals, respectively, a pair of thrust elements extending longitudinallyy in said memberwith Vtheir inner ends vspaced one from the other and their outer ends adj acent the respective journals, relatively movable wedge members interposed between lsaid element ends, and manipulative members toward the other for operating one of said wedge means including a hand lever to force said Ielements in opposite directions into engagement with ,said journals to clamp the latter'immovably in their'bearings.` j 5. In'V ahead rest, the combination of supfrom theother'and their outer ends adjacent porting means provided with a journal, a j
head rest provided with a journal, a columnar member havingl transverse bearings at its'ends for. said journals, respectively, a pain of thrust elements 'extending' longitudinally 'of said member with their inner ends contiguous and their outer ends adjacent the respective journals, said elements having inclined cam surfaces at their contiguous ends, relatively movable wedge members interposed between said cam surfaces, and a handpiece pivoted on the exterior of said member having a cam surface cooperating with said wedge members for forcing one toward the other to press said elements in opposite direct-ions into clamping engagement with said journals.
6. In a head rest, the combination with a supporting bracket adapted for attachment to a chair back and having a journal, a head rest having a journal, a tubular member having transverse bearing openings in its ends extending through the bore ofA said member for receiving said journals, respectively, a pair of rods in end to end relation in said member bore with their outer ends adjacent the respective journals, said rods being substantially V-shaped at their contiguous ends, a wedge adjustably carried by said member to project from one side between said rod ends, a wedge movably carried by said member on the opposite side of said rod ends, and a handpiece pivoted on said member and provided wit-h means for forcing said movable wedge between the ends ofsaid rods to force the latterv apart into clamping engagement with said journals.
7. In a head rest, the combination of supporting means, a columnar member having at one end a pivotal connection with said means, a U-shaped arm having upper and lower substantiallyy parallel portions,the latter having pivotal connection with the other end of said member, longitudinal thrust elements carried by said member with their inner ends in contiguous relation and their outerends adjacent said pivotal connections, respectively, manipulative means for thrusting said elementsv in opposite directions into yengagement with said `pivotal connections for Vimmovab'ly clamping said arm, member and supporting means together, a bracket for supporting a headv rest, a parallel motion linkage connecting said arm and bracket, and clamping.
means upon the upperportion of the arm for securing saidbracket in adjusted `position on the arm.
8. In a head rest, the combination of supporting means, a columnar member having at one end a pivotal. connection with' said means, an arm having upper and lower substantially parallel portions, the latter of which is pivotcd upon the other end of said member, said pivotal portions having aXes in a common plane, longitudinal thrust elements carried rby said member with their inner ends in contiguous relation and their outer ends adjacent said pivotal portions, respectively, manipulative means for thrusting said elements in opposite directions into engagement with said pivotal portions to immovably clamp the parts in adjusted position, an element for `with. said bracket, a U-shaped arm adjustable upon said part, clamping means for securing said arm in adjusted position, a head pad and a mounting therefor, parallel links connecting said arm and padmounting, and
clamping means upon the larm for securing said links and mounting in adjusted position'. 10. In a head rest, the combination of a supporting bracket, a columnar member having an end adjustably connected with said bracket, a curved.` arm. including upper and lower substantially parallelportions, the latter of which is adjustably connected with the other end of said member, means for clamping said arm, member and bracket together in adjusted position, a pair of head pads, yoke means supporting said pads, parallel links each pivotally connected with said yoke and the upper portion of the arm, and means for clamping said links and yoke in adjusted'po sition on said upper arm portion. V
l1. In a device of the class described, the combination witha head rest and a supporting bracket, of a tubular member` adjustably connected with said head rest and bracket, thrust elements disposed within said tubular member Vfor effecting-a clampingraction between the latter and said bracket and head rest, a slide mounted for movement transversely of said tubular member, wedge members carried by the slide with their adj acent ends engaging the adjacent ends of the thrust elements, and a roller on the slide and a pivoted handle having la cam for moving one of the wedge members toward the other whereby to move the plunger elements in opposite directions. y
l2. In a device of the classl described, the combination with a head-rest and al supporting bracket, of an intermediate member adjustably connectedwith said head-rest and bracket, thrust members disposed'within said intermediate member with their inner ends contiguous andtheir outer ends arranged for cooperation with 1 said head-restv and bracket whereby to hold the head-rest and intermediate member in different positions ofadju'stment, a slide mounted for free movement in a transverse guideway formed on said interme-r diate member, oppositely disposed members carried by the slide, eachof whichengages the contiguous ends of said'thrust members and one of which is slidably mounted for movementtoward the other to move said thrust members in oppositev directions and a member movable upon the slide to eifectmovement of said slidably'mounted member: l
13. In a device of the class described, the
combination with a head-rest and a supporting bracket, of an intermediatemember adjustaby connected with said head-rest and bracket, thrust members disposed within said intermediate member With their inner ends contiguous and their outer ends arranged for cooperation with said head-rest and bracket Y whereby to hold the head-rest and intermediate member in different positions of adjustment, a slide mounted for free movement in a transverse opening formed 1n said intermediate member7 spaced actuating members carried by the slide havingl Wedge shapedy portions extending between the contiguous ends of said thrust members, loneof said aetuating members being free to move upon the slide and a member mounted to swing upon the slide and having a cam. portion for moving the last mentioned actuating 'member whereby to move said thrust members in oppo- 20 site directions.
" `ADAM J. MAY.