US1651506A - Vertically-adjustable chair - Google Patents

Description

Dec; 6, 1927.-

E. BERNINGHAUS VERTICALLY ADJUSTABLE CHAIR Filed April 1'7 1923 'IIIIII. UIIIIII.

IIII'II \\\n *NN N attonuq Patented Dec. 6, 1927.

PATENT OFFICE.

EUGENE BERNINGHAUS, or CINCINNATI, OHIO.

VERTICALLY-ADJUSTABLE CHAIR.

Application filed April 17, 1923. Serial No. 632,665.

My invention relates to improvements in vertically adjustable chairs. One of its objects is to house and protect the oilcoated surfaces of a vertically adjustable chair to keep the oil coated surfaces clean and free from dust, grit and other foreign substances suspended in the air orliable to be brought into contact with such oil coated surfaces,

and which tends to collect uponand adhere to such surfaces. Another object is tohouse and conceal from view the oil coated or machine finished surfaces of a vertically adjustable chair, and to provide an exposed surface over suchoil coated or machine fin ished parts adapted to be aseptically treatedor kept clean in substantially the same manner that other surfaces of the chair are customarily treated. Another object is to' provide an improved housing and protecting apparatus, adapted to be conveniently assembled or taken apart as required. Another object is to provide an improved housing and protecting apparatus which is sim-v ple, efficient and noiseless in operation. My improved apparatus also comprises certain details, and combination and arrangement of components, all of which will be fully set forth in the description. of the accompanying drawings, in which; 7

Fig. 1 1s a side elevation, partly 1n1central vertical section, of a vertically adjustable chair embodying my invention.

Fig. 2, is a perspective view of the pedestal or plunger of said chair detached.

Fig. 3, is a perspective view 'of'the housing or protecting sleeve detached.

Fig. 4,.isavertical section through the baseand pedestal of'a vertically adjustable chair showinga modification of Fig- 1.

Fig. 5, is perspective view of a detached flexible gasketv employed in Fig. 4:.

The accompanying drawings illustrate the preferred embodiments of my invention in igs. 1, 2, and 3 of which I have illustrated my improvements as applied to a hydrau lically vertically adjustable chair, such for: Instance as a barbers chair or surgical chair.

The chair may however' be vertically adjustable byother means,as forfinstance by screw orratchet feed mechanism, within the score 'my .invea i T As illustrated a chair seat 15, a chair back 16,'chair arms 17, and a foot rest 18 are connected together in the usual manner and are mounted upon a pedestal or hydraulic plunger 19, to the upper end of which the plunger as maybe required to-eleVate 'or lower the plunger within the cylinder. A liquid pump piston 23 is adapted to be rec'iprocated within the interior ofthe plunger 19 to pump the liquid into the'cylinder belOW the plunger When required to elevate the plunger and chair seat carried thereby. A

crank shaft 24 is journaled in the upper portion of theplunger and operatively connected by means of a connecting rod 25 with the piston 23. A hand lever 26 is employed to reciprocate the crank shaft, and also when moved to other positions to control the flow of liquid from the cylinder back tothe interior of the plunger, and also to apply a brake mechanism to lock the plunger to its adjusted position, which of known types.

At the upper end of the cylindrical section 201 provide an annular shoulder or ofiset27, and above said shoulder 27 a rectangular section 28 forming a journal support for the crank shaft, and also a housing forthe, upper end ofthe connecting rod. At theupper end of the rectangular section 28 is an annular flange 29 by means of which the pedestal or plunger 19 is bolted or other.- wise rigidly attached mum chair seat.

I Ordinarily that portion of the pedestal 19 projecting above the upper end of the cylinder, whatever type of seat elevating means maybe employed, would be exposed to view and would havemachine finished surfaces 7 apparatus may be and such machine finished surfaces would ordinarily be coated with lubricating 011, and therefore present unsanitary appear- .ances, and exposing surfaces tending'to attract and hold dust, grit and s milar substances taken from the atn'iosphere. The aeeumulation oil? dustand grit upon the maohined surfaces is detrimental to the opera tion of the mechanism and unsightly as well as having an unsanitary appearance.

In order to present a tinished and pleasing appearance, and a sanitary appearaiu'e. and at the same time to protect the unurhined and oil eoated surfaces I n'ovide a eylin drieal tubular housing member 30, the upper end of which fits snugly over the exterior of the annular shoulder Bland against the under face oi the reetangular seetion A pair of ears Ell projeet upwardly from the upper edge of the housing member 30 along! side of opposite fat-es of said l'ot'lflllj tllltll' section 28. The rectangular section 18 is provided with dogs or studs 32 preteraltilv having inclined outer ends, and the ears Ell are provided with perforations to reeeive and interlock with said studs 32 to hold the housing member 30 rigidly but detaehahly in place upon and relative to the pedestal 19. The ears Ell. are snflieiently resilient to enable said ears to be spread apart. by the inclined ends of the studs 32 until said studs reach a position opposite the perforations in said ears 3], when the ears Ell spring toward each other and hug the fares oi the reetangular section 28 with the studs 32 projecting into or through the perforations in said ears 31. In the event that it becomes neces ary to detach the housing 30 from the pedestal 19, wedges are inserted between the ears 31 and the :taees of the sect-ion until the studs 32 are free from the perforations of said ears whereupon the housing and pedestal are separatcal. The lower end of the housing member ill projeris downwardly and teleseopieally enters andv moves with in the annular space 34- between the eylinder l2 and an annular flange 35 projecting upwardly "from the base 5-36. The flange 35 may be formed integral with the eylinder Q3 and base 36, but is preferably formed separately and bolted or otherwise attached to the base. A polished metal annular faring member 37 is preferably enniloyed as an m'naniental finish, and to eoneeal the joint between the base 36 and flange 35. A polished sheet metal annular roller 38 is preferably one ployed titted over the upper end of flange as to make a close joint and finished appea anee between the flange 35 and the housing member 30. The exter or tare oi the housing member 30 is prei'erably finished in white fused enamel, and also the exter or fare of the flange 35 to correspond with a similar finish applied to tllfifitflt frame -39 and to the chair arms 17. The housingmenn her 30 thus has the appearance of an up- 'ard extension of the flange 35, and said housing 30 moves telesyeopieally within tl e flange i lo as the pedestal it) is raised or lowered, with an invisible joint between said housing .ltl and flange 3:"). The chair thus presents a sanitary appearance throughout, the enameled :l aees may be eleaned through the use of strong ehemieals without injury to said enameled faces, and the machined faces are prot-eettal from injury, from dirt, grit or chemicals.

in the inmlititaition Figs. 4- and 5 I have illustrated an annular gasket 10 oli rubber, paper fiber or other similar nonmetallio material of slightly resilient nature interposed between the upper edge of the housinginember ill) and the flange 27 and lower face of the reetangular settion :28. to yieldingly and noiselessly hold the ears ill and studs 32 in locked engagement.

The ap iiaratns herein shown and de arribed is capable of eoi'isiderahle moditiealion without departing from the spirit of my invention.

lVhat I claim is: e j

1. A ehair comprising a ehair base having an upwardly extending chair pedestal supporting member, an annular flange project ing upwardly :ti'otnjsaid base about said pedestal supporting member to provide an annular recess between said pedestal supg porting member and said flange, a chair pedestal "vertically adjustable upon and relative to said pedestal supporting ineinl'ier, said pedestal being ]')1.0Vl(l0(l at its upper end with an enlarged head and near its upper end with a spacing shoulder, looking projeetions extending outwardly from the enlarged head oi said pedestal, a chair seat mounted upon said pedestal and vertically adjustable with said pedestal, and a tubular pedestal housing provided with iertorated ears projeetii'ig upwardly and outwardly from the upper end ot said i'iedestal housing to en gage sa d lock ng projeetions to look said tubular housing with its upper end rigidly against the shoulder of said pedestal and with said tubular housing spaeed from said pedestal and in po ition to more vertically into and out of lheanuula r reeess oi the base as the pede al adjusted rertieally relative to said base.

ehair eomprising a chair base lHIV" irg an upwardly extending ehair pedestal rupporting member, an annular flange projenting upwardly from said base about uaid pedestal supporting member to provide an annular recess between said pedestal supporting member and said flange, a chair pedestal vertically adjustable upon and relative to said, pedestal supporting member, said pedestal being provided near its upper end with means to spare a tubular housing away from said pedestal, a shoulder near the up per end of said pedestal, and loekingprojet'tions extending outwardly from the eularged head of said pedestal, a chair seat mounted upon said pedestal and vertically bular housing inposition to move vertically adjustable with said pedestal, and a tubular into and out of the annular recess of the pedestal housing provided with upwardly baseras the pedestal is adjusted vertically 1 directed yielding perforated ears to yieldrelative to said base.

ingly engage over said locking projections In testimony whereof I have affixed my to lock said tubular housing rigidly against signature;

the shoulder of said pedestal With said tu- EUGENE BERNINGHAUS.

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