US 2042399 A
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Description (OCR text may contain errors)
Pvfiay 26, 1
E. D. HOLME.
COMBINED CHAIR AND TABLE 6 Sheets-Sheet 1 Filed June 12, 1954 awe/whorl ED.H0Zme May 26, 1936.
E. D. HOLME v COMBINED CHAIR AND TABLE 6 Sheets-Sheet 2 Filed June 12, 1934 E.D.Holme y 1936- E. D. HOLME COMBINED cHAIfi AND TABLE Filed June 12, 1934 6 Sheets-Sheet 3 EllHoZnze I May 26, 1936.
E. D. HOLME COMBINED CHAIR AND TABLE d June 12, 1934 6 Sheets-Sheet 4 1 17.12. Holme May 26,1936. E, D, H LME 2,042,399
COMBINED CHAIR AND TABLE Filed June 12, 1934 6 Sheets-Sheet 5 Patented May 26, 1936 UNITED STATES COMBINED CHAIR AND TABLE Edward D. Holme, St.
Joseph, M0., assignor to Edward D. Holme, Jr., St. Joseph, Mo.
Application June 12, 1934, Serial No. 730,306
This invention relates to a convertible structure, such as a combined chair and table capable of being used to facilitate therapeutical examinations; for convenient application of medicinal treatments; and for supporting a patient to be operated upon in a satisfactory seating or reclining position.
The convertible structure, in accordance with 7 this invention is designed for use by eye, ear, nose and throat specialists; gynecologists; proctologists; and general practitioners, and has for its object to provide, in a manner as hereinafter set forth, in one adjustable unit all the necessary I equipment which is required in an office for therapeutical examinations by specialists and general practitioners thereby conserving space.
A further object of the invention is to provide, in a manner as hereinafter set forth, a covertible structure having parts thereof capable of being adjusted flatwise in opposed or tandemwise relation to set up an operating table which may be adjusted to several positions and which is capable of flexing the body in any shape the operator may desire without having to lift the patient.
A further object of the invention is to provide, in a manner as hereinafter set forth, a convertible structure capable of being formed in a gynecological chair having foot, leg and head rests, rotatable from side to side, vertically movable to 30- the desired height and positionable in a manner so the medication may be easily applied with the least inconvenience to the patient or to the operator.
A further object of the invention is to provide, in a manner as hereinafter set forth, a convertible structure capable of being readily adjusted to form a proctological table.
A further object of the invention is to provide, in a manner as hereinafter set forth, a convertible structure capable of being readily adjusted to a mechanical table with all-the possibilities of spinal adjustment.
A further object of the invention is to provide, in a manner as hereinafter set forth, a convertible structure readily adjustable to form a table for a patient and including means capable of flexing the spine through two planes, a horizontal plane and a vertical plane.
A further object of the invention is to provide, in a manner as hereinafter set forth, a convertible structure of the chair and table type so constructed as to meet the necessities of a busy physician. 7
Further objects of the invention are to provide,
in a manner as hereinafter set forth, a convertible structure of the chair and table type which is comparatively simple in its construction and arrangements, strong, durable, capable of being folded compactly when not required for use, thoroughly efficient for the purposes intended thereby, conveniently adjusted when desired, and comparatively inexpensive to set up.
To the above ends essentially, and to others which may hereinafter appear the invention consists of such parts, and such combination of parts which fall within the scope of the invention as claimed.
In the drawings:-
Figure 1 is a side elevation illustrating the convertible structure adjusted to provide a fiat table, and further showing in dotted lines the positions of one part of the table when vertically flexed relative to its remaining part.
Figure 2 is a top plan view of the structure as shown in Figure 1 and further illustrating in dotted lines several outer elements of the table angularly adjusted in opposite directions with respect to the center of the table.
Figure 3 is a side elevation of the convertible structure illustrating it adjusted to provide a proctological table.
Figure 4 is a longitudinal sectional view of the convertible structure illustrating it in position for use by an eye, ear, nose and throat specialist.
Figure 5 is a detail illustrating the latch between a pair of body supporting sections or cushions forming elements of the structure.
Figure 6 is a fragmentary view in side elevation of the structure illustrating it in position for use by gynecologists.
Figure 7 is an inverted plan of three of the body supporting sections or cushions of the structure connected together and extended relatively to each other.
Figure 8 is a section on line 88, Figure 6, with several of the parts shown by Figure 6 omitted.
Figure 9 is a section on line 9-9, Figure 4.
Figure 10 is a section on line l0|0, Figure 9.
Figure 11 is a section on line |l--I I, Figure 1. Figure 12 is a section on line |2-l2, Figure 1.
Figure 13 is a fragmentary sectional view of the pedestal and that section or cushion of the structure forming the seat of the chair which is fixed upon the upper end of the pedestal.
Figure 14 is a section on line I l-l4, Figure 1,
Figure 15 is a sectional detail illustrating a latch associated with two of the body supporting sections or cushions.
Figure 16 is a detail illustrating a latching 55 opening 3:2 and the inner face of boss 33. is a mechanism to prevent one of thebody supporting sections or cushions collapsing when revolvadjustable supporting pedestal, a foldable chair and means associated with the chair to provide,
when the latter is folded, a horizontally disposed table. The chair has a part for supporting the legs of a patient, a pair of sides, a seat and a back. The said part'will be termed a leg rest. The means associated with the chair to provide the table, when the chair is folded, is connected to the chair back. The seat of the chair is anchored to the top of the pedestal. With reference to Figures 1, 4 and 13: The pedestal indicated generally at is of known form and operated from a spring controlled crank 2|. The pedestal 20 includes a vertically adjustable part 22 revolving within a stationary part 23.
, With reference to- Figures 1, 4, 11, 12 and 13: 'lhene 23 oi Pede al 2" is f me in its Outer periphery at the upperend thereof with a circumfe en al ex neiner b et 4 (F ure providing a shoulder 25 for supporting the bottom ed of a resi n .f i tiena annular brake shoe 6, ric iona n in wi h t ho is a semi-circular resilient brake shoe 21 held against shoe 26 by a semircircular holder member .28. havin Qi-ft. nd ermin l p n 'Enco npassing the shoe 26 and member 28 is an upstanding collar 30 provided with an inwardly extending annular flange 3| which seats upon the top edge of part 23 of pedestal 20. The flange 3| is formed eircumferentially thereof with an arcuate slot 32. The collar 30'has an opening 32''- and an annular boss 33 forming acontinuation of the wall of opening 32'. The. wall of the latter is threaded, as well as theinner face of boss 33. Threadedly engaging with the wall of peripherally threaded rotatable latching member 34 carrying a crank handle 35 on its outer end.
' The ofiset end terminal portions 29 of member 28 r are secured by the holdfast means 36 (Figure 12) to the inner'face of collar 30. The. brake shoes '26, 21 coact to normally prevent the revolving of collar 3| circumferentiall'y with respect to the part 23* of pedestal: 20. The flange 3| has secured thereon transversely thereof an upstanding lug 31 having 'fixed therewith upon the outer enizl of'itsu-pper face,by the holdfast means 38,
a the closedjen'd- 39 of a yoke 40 which is disposed at right; angles with respect to. lug 31. Extending downward-1y through slot 32 and depending below collar 30 is a vertically disposed rod'4l capable oftravelling in opposite dirrections in slot 32 until it abu-ts the end walls 42, 43 of the latter. The latchingmember 34 is eapable of being'adjusted inwardly to bind against shoe 26 to provide forthe latter to clamp against part 23 of pedestal 20 to look collar 36 to prevent it revolving relative to part 23. The purpose of locking collar 30 from movement will be hereinafter referred to. The
'functioi iof' rod 4|, ing 31 and yoke 40- will be hereinafter referredto. The rod 4| isanchored at, its upper end to a part, to be hereinafter referred to, of the seat of the chair, 7
, With referenceto Figures 2' and 4: The convertible structure includes cushioned sections or elements 44, 45 46 41, 48, 43, 50-, a pair of cush- 991. a res fia ce tus ea rest. 54 The section 511 constitutes a head rest. The'sections 44'l 45', 4e, 41, 4a, 49, so. and arm rests 53 $2 1 92 3 132 22 5. 15 L 5. 5 6| an 62 respectively. The said body parts may be constructed of any suitable material, preferably wood. Each cushioned. section and arm rest includes a mass of cushioning material positioned upon its body part and enclosedby a flexible covering 64.
With reference to Figure 2: The shape of section 44 is rectangular. The section 45 tapers-towards its'outer end and has its wider end bifurcated, as at 61, to form a pair of spaced parallel arms 68. The section 46 is of rectangular contour and corresponds in length to the width of furcation 61. The width of section 46 is greater than that of section 44.v The length of section 46 is less than that of section 44. The arm rests 53 are of oblong contour. The section 41 is of substantially rectangular form and has a pair of straight side edges I08, a straight end edge I09 and a semi-circular end edge H0. The element 48 is substantially of oval contour and is formed in proximity to one end with a pair of oppositely extending laterally disposed cushioned protuberances 48', 48". The section .49 is substantially of rectangular contour and has one of its end edges formed with a concave part I84 and a pair of straight parts I85. extending Outwardly at right angles from the ends of the part I84.
sated at 12. extending outwardly from the outer.
end edge of plate 10. The stretches "are provided with openings 13 (Figure l) for the passage of a: pivot means 14, coupled to the section 44 for the purpose of pivotally connecting the latter to the outer end of frame 63between the stretches 12,;whereby section 44 may be swung outwardly at an angle to plate 10 to form a foot rest (Figure 4), or it may be folded in a. direction to. have its. body part seat upon plate 111 in the position as shown in Figure 1. Each flange 1| includes an elongated stretch, indicated at 15; which extends inwardly or rearwardly from the, inner end of plate 10. The body part 56 of section 45 seats upon and is secured to a part of plate 10 and overlaps intermediate portions of the fiangesll. The plate 10 has a portion thereof; indicated at 1.6, extended from section 45 a direction towards section 44. The latter, when folded; seats upon portion 15 between flanges 1|. The stretches 15 of the flanges are arrangedat the inner sides of and extend beyond the free ends.
of the arms 68. The section 44, when extended to act as a foot rest, is detachably held in. such position by the, coaction therewith of a pair of opposite lugs 11 carried by the bottoms of the outer ends of and extending inwardly'fr'orn the stretches 12. The sections 44, 45 and the frame 69 provide the chair with a leg rest. The section 46 forms the seat of the chair and it extends The latter is formed of into the inner portion of the bifurcation 61 of the element 45 between the inner'portions of the stretches 15. The section 46 is pivotally conpart 51 of section 46 is cutout to provide a wide transversely extending groove 19 (Figures 9 and 10) The body part 51 of section 46 is extended nected to the stretches 15, as at 18. The body within and anchored to a metallic plate 89 formed with upstanding side flanges 8|. The plate 89 coacts with the groove 19 to provide a chamber for housing elements of a latching mechanism. The construction and purpose of the latching mechanism will be presently referred to. The flanges 8| are formed on their outer side faces with aligning openings 82 (Figures 9 and 10) and guide lugs 83 adjacent said openings 92. The flanges 8| include stretches 84 extending rearwardly from the body part of section 49. The stretches 84 have aligning openings 95. The plate 89 is anchored to the head I94 of the vertically adjustable part 22 of the pedestal 29. The upper end of rod 4| is fixed to the plate 89.
The chair sides include vertical plates 52 of semi-circular contour (Figures 1, 4, 9 and Positioned in spaced relation to the inner face of each plate is an upstanding keeper element 88 attached to the body part 62 which associates with the latching mechanism to be referred to. Each element 88 consists of an upstanding bar 99 attached thereto of segmental contour curving downwardly and rearwardly from its upper end. The bar 99 is formed throughout with a curved row of spaced openings I99. The curvature of the row corresponding to that of the bar 99. The latter is secured against the inner face of a quadrant-shaped plate IIII. The elements 88 extend above the tops and have their lower ends positioned above the bottoms of plates 5|, 52. These latter also extend rearwardly of the plates I9I. The seat forming section 49. is arranged between the bars 99. The plates 5|, 52 have their outer faces covered as at I92. The body parts 62 of the arm rests 53 are of T-shaped contour (Figure 9). The plates 5!, 52 are anchor-ed to the stems of body parts 62. The plates |9| are anchored to the lower faces of the heads of body parts 62 inwardly of the semi-circular plates. The openings I99 of one bar 99 align with the openings in the other bar 99.
Each arm rest has secured to the inner side of the head thereof a link I 95 formed with an opening I96 which aligns with the upper opening I99 of a bar 99 to freely support the latter. The links I95, at their outer ends, are pivotally connected, as at I91, to the free ends of the stretches of the flanges II.
The back of the foldable chair is provided by the sections 41, 48 connected together to move in unison, the connection therebetween will be hereinafter referred to. into and projects rearwardly from the semi-circular end edge 9 of section 41. The section 41 is arranged between the chair sides and between the stretches 84 of the flanges SI of plate 89. The section 41 is pivotally connected to stretches 84, as at III, and to the links I95, as at 2', whereby, in connection with the pivotal connections 18, I91, the leg rest is interconnected to the chair seat and to the chair sides and the chair back is interconnected to the chair seat and chair sides.
The latching mechanism which associates with the keeper elements 88 will now be referred to. The purpose of said mechanism is to hold the interconnected leg rest and chair back in angularly adjusted position with respect to the chair seat and sides when the structure is used as a chair, and in horizontally extended position with respect to the chair seat and arm rests when the structure is employed as a table. The mechanism. for the purpose referred to, (Figures 4, 9 and 10) includes a lever 89 fixed to the upper The section 48 extends end of a vertical shaft 99 extended upwardly through an opening 86 formed in the plate 89. The lower end of shaft 99 carries a handle 9| for shifting it. Secured upon plate 89 and within groove 19 is a pair of spaced parallel apertured combined guide and abutment members 94, 95. Operating through member 94 and an opening 82 of one of the flanges 8| is an angle-shaped spring controlled slidable latching member 96 pivotally connected at its inner end to one end of lever 89. Operating through member 95 and the opening 92 in the other flange 8| is a spring controlled slidable latching member 91 pivotally connected at its inner end to the other end of the lever 89. The members 94, 95 provide guides for the members.99, 91 respectively and also abutments for the controlling springs 98 for and which are carried by the latching members 99, 91. The latching members are to selectively engage in aligning openings of the rows of openings I99 on the upward or downward movement of the chair sides for the purpose of latching or holding the convertible structure in the form of a chair or table.
The connection between the sections 41 and 48 will now be referred to. With reference to Figures 2, 4 and '1: The section 41. includes a metallic base plate I I2 upon which the body 'part 59 of said section is secured. Anchored to the lower face of plate H2 and flush with the end edge I99 of section 41 is a pair of oppositely disposed angle-shaped flat bars I I3 having spaced opposed depending parallel legs II4. A rearwardly extending horizontally disposed oblong support or member 5 has its forward end edge arranged between and anchored to legs I I4. The member I 5 stands on one of its lengthwise edges and is of a length to extend under section 48. The section 48 includes a metallic base plate II6 upon which the body part 59 of said section is anchored. The outline of section 48 corresponds to that of plate H9. The plate II6 (Figure '7) consists of a part II1 of semi-oval contour, oppositely disposed flat rectangular parts H8 and a segmental part H9. The parts H1, 9 merge into the parts H8. The parts II9 are extended laterally in opposite directions with respect to parts H1, H9. Formed integral with the lower face of part I|1 (Figures 4 and 14), of plate H6 is an inverted yoke I29 which has its arms oppose the outer faces of a pair of spaced upstanding arms I 2| form-ed integral with a horizontally shiftable circular plate I22 mounted over the upper end of a bearing structure I23 integral with the other end of the oblong member H5. The arms of yoke I29 are pivotally connected to the arms IZI as at I24 (Figure 14), to provide for the shifting of section 48 when plate I22 is shifted. The structure I23 includes an upstanding stationary casting I 25 integral at one side with member H5 and formed at each end with a pocket I29. The casting I25 has an axial bore I21 which opens into the pockets I29. The upper end of casting I25 is formed with an outwardly directed annular flange I28 which opposes the circular plate I22. The latter has a centrally arranged square opening I29 and pockets or recesses I in its lower face adjacent opening I29 and opposed by flange I28. Extending through opening I29 and the bore I21 of casting I25 is a headed revolvable bolt I3! having that portion of its stem arranged in opening I29 squared, as at I32. The bolt |3| functions to shift plate I22. Positioned in the pockets I26 are bearings I33 which surround the shank of 'bolt I3| The head of the latter seats upon plate I22. The shank-of the bolt depends below the lower end of casting I25. Anchored to the lower portion of the shank'of bolt I3I, as at I34 is a laterally extending lever arm I35 to the outer end of which is secured, as at I36, a yoke-shaped member I31. The lever arm I35 revolves bolt ,I3I and plate I22. Positioned on the shank of bolt I3I and bearing against the lower face of the inner end of arm I35 is a washer I38 which is engaged by a clamping nut I 39 adjustably mounted on the lower end of the bolt shank. There is pivotally connect-ed, as I40 to the member I31 the outer end of a telescopic coupling rod I4I for shifting lever I 35. The inner end of rod MI is pivotally connected, as at I42 to yoke 40 (Figures flange I28. The plate I22 (Figure 16) is formed with a lateral extension I46 provided with an opening I41 through which extends a vertically disposed fixed bar I48 provided with a groove I49 to receive the curved arm I50 of a two-arm latching down lever I 5I for section 48. The
. lever I5I, when in latching position prevents the tilting of section 48 on pivot I24. The lever I5I is arranged over and has one end pivoted, as at I52 to the plate I22. Surrounding the bar I 48 is a coiled spring I 53 (Figure 4), and between a pair of coils thereof is positioned the arm I50 when the latter is extended into the groove I49 of bar I48. The upper end of bar I48 is fixed to the plate II6, as at I54 (Figure 4). The arm I50 of lever I'5I has a depending handle member I55 (Figure 4), for facilitating the shifting of the lever. Secured to the lower face of plate II6 (Figure 15) is an angle iron I56 having its vertical flange I51 formed with an opening I58 to receive the bill I59 of a locking hook I60 pivotally connected, as at I6I to and extending above and depending below the member H5. The purpose of the hook I60. is to lock section 48 with .the member II5 whereby sections 41, 48 cannot shift relatively to each other. The shifting of section 48 on pivot I24 cannot be had unless hook I60 and lever I5I' are released. The section 48 carries a pair of adjustable supporting units I66 for-vertically adjustable stirrup elements I61. Each unit I66 is in the form of a rectangular plate I68 formed with a lengthwise slot I69, an
opening I10 for the passage of an element I61, a set screw I1I for the latter, and a coupling screw I12 for plate I68. The screw I12 extends upwardly through slot I69 and engages in plate H6. The plate I68, in connection with screw I12 provides means whereby a'unit I66 may be adjusted laterally to varying distances with respect to cushion section 48. The elements I61 (Figure 8) are illustrated by way of example as consisting of a bar I13 having a socket I14 at its upper end for the stem I 15 of a removable head piece I 16. The latter may be of any suitable form. The units I66 are employ-ed as supports for the elements I61 when cushion section 48 forms an element of the table.
With reference to Figure 4:
The section 98 has its body part 59 formed at its lengthwise center with a tube I11 forthe reception of the stem I18 of an adjustable head rest I19 when section '48 is employed in connection with a chair. A set screw I is employed for detachably connecting the stem I18 in the desired projecting position with respect to the outer end of section 48. the adjustable head rests I 19 connected to the section 48, the stem I82 of a receptacle! may be connected to the said section (Figure 6). When receptacle I83 is employed, the sections of the chair are arranged in table-like form and;
the sections 49 and 50 are not used.
The means which is associated with the chair to 7 provide a table of the desired length consistsof the cushioned sections 49 and 50. The sections 49, 59 are connected together and the section 49.
is connected to the section 48 in a manner to. be
In lieu of employing of connecting sections 48 and'49together will now be referred to. The section 48 has anchored to its lower face a pair of spaced aligning oppositely disposed plates I63 having their outer ends formed with depending flanges I64 terminating in circular extensions I65 having toothed edges I66 and lateral openings I61. The plates I63 are disposed on the plate H6 inwardly adjacent to and in alignment with the rectangular parts I I8.
The body part 60 of section 49 has arranged,
therein a pair of spaced tubes I88 opening at edge I81 and associated with the tubes I88 is a pair of set screws I89 which extend up through a metallic base plate I90 and into'body part 60. The latter is secured upon plate I90. The lower face of plate I90 has secured theretoa pair of spaced parallel plates I9I, each having extending therefrom a pair of spaced parallel flanges I92 terminating in a pair ofcircular'extensions I93 having axial openings I94. Between each pair of circular extensions I93 is arranged a toothed circular extension I65 having its axial opening I61 registering with the axial openings 7 I94 of the pair of extensions I93. A hinge bolt I95 extends through registering openings I61, I94 for connecting an extension I65 to a pair of extensions I 93. Each pair of extensions I93 forms a hinge section. Each extension I65 and its associated pair of extensions I93 in connection with a bolt I95 provides a. hinge for connecting cushion section 48 to cushion section 49. For the purpose.
of latching cushion sections 48, 49 together when they are in the positions shown in Figures 3, 5,
and 6 to prevent the shifting of section 48 relative to section 49 after the said sections have been arranged in the position desired, a pair of spring controlled latching levers I96 are employed. The levers I 96 at one end are eccentrically pivoted, as at I91 upon plates ISI. The levers I96 at one end are provided with noses I 91 which engage in the teeth r66 of the extensions I 65. The levers I 96 are also employed to prevent the shifting of section 49 upon the bolts I95 when said section is in a depending position with respect to'section 48 as is shown: in Figure 6, and in this connection it will be stated 7 position to align with section 46.
that due to the engaging of the noses I91 of the levers I96 in the toothed edges of extensions I65 the section 49 cannot swing inwardly.
With reference to Figures 1, 2, 3 and 6:
The section 50 has extending inwardly therefrom a pair of adjustable stems I98 slidably mounted in the tubes 588 of section 49. The set screws I89 are employed to maintain'the stems I98 in their adjusted position.
The section 45 (Figure 1) has depending therefrom a bracket 99 having adjustably connected therewith, as at 208 one end of a controlling spring 28I for the said section. The other end of spring 20I is anchored, as at 202 with the bottom of section 46.
When the structure has been converted into a chair, as shown in Figure 4, the sections 49, 58 are swung downwardly and latched in such position. Now it will be assumed that it is desired to convert the structure into a table, such as shown in Figure 1. The latching mechanism, which is associated with the keeper elements 88, is released from the latter. The frame 69 is then swung to a horizontal position which lowers the chair sides carrying the rests 53 to a position at the sides of section 45. When the rests 53 are moved downwardly to the position stated, the sections 47 and 48 are shifted to a horizontal When frame 69 moves to a horizontal position the arms 68 of section 45 endwise align with the rests 63 and are disposed at a part of the sides of section 46. Section 44 is folded upon frame 69 to align with the outer end of section 45. Before shifting frame 69 to its horizontal position, the section 54 is removed from section 48. After the latter has been shifted to its horizontal position, the section 49 is released and swung upwardly to endwise align with section 48. Section 49 is moved with section 48. When the structure has been adjusted to the position shown in Figure 1 the latching mechanism is then engaged in the keeper ele ments 88 and the structure locked in table formation.
When the table has been formed, the brake shoes 26, 21, under ordinary conditions, will coact to hold the table from revolving.
Normally the latching member 34 is not in binding engagement with the brake shoe 26 to latch collar 30. The purpose of latching collar 39 will be presently referred to.
When the table is formed it includes a carrier portion or stretch and an adjustable portion or stretch. The carrier portions is set up by the sections 44, 45, 46, 4'! and rests 53 and the adjustable portion by the sections 48, 49 and 59. Normally the two portions are bodily shiftable togather in the same plane. The adjustable portion may be tilted downwardly and upwardly with respect to the carrier portion, pivot I24, when the hook I69 and lever I5I are released. The adjustable portion is adjusted laterally in opposite directions with respect to the carrier portion when hook I60 is in released position. The adjustments of the adjustable portion of the table provide for flexing the body of the patient without requiring the operator to lift the patient on the table. The lateral shifting of the adjustable portion of the table is obtained by locking collar 38 from revolving with respect to the part 23 of the pedestal to provide a fixed point and which, in connection with yoke 48, rod I4I, lever arm I35, bolt I3I, plate I22 and yoke I28, will provide, when the table is shifted on its axis in one direction or the other, the lateral adjustment of the adjustable portion relative to the carrier portion. The various positions which may be im parted to the adjustable portion or stretch of the table are shown in dotted lines, Figures 1 and 4.
The hook I60 co-acts with opening I58 in angle iron I56 and the lever I5I coacts with the grooved bar 548 to prevent the section 48 from collapsing when said section is employed as a part of the chair back and when disposed horizontally. The rod 4| coacts with the end walls of the slot 32 for limiting the revolving movement, in either direction of the carrier portion or stretch of the table when the collar 30 is latched. The latch ing means I44 coacts with a pocket I45 to main tain the adjustable portion or stretch of the table in its laterally adjusted position.
What I claim is: I
1. In a. convertible chair and table structure for the use of physicians composedof a plu-' rality of relatively movable sectionsoomprising a foot rest, a seat, a leg rest intermediate said foot-rest and seat, a series of articulated rests beyond said seat, and. a pair of side members on opposite sides of said seat spanning a portion thereof and a portion of said series of articulated rests; said series of articulated rests comprising a forward rest and a rear rest, means for pivotally connecting said rests whereby said rear rest may be swung downwardly with respect to said forward rest, each of said rests having means for receiving and detachably connecting thereto a head rest; a frame for supporting said leg rest, means for pivotally connecting said foot rest to the forward extremity of said frame below said leg rest, means for pivotally connecting the for ward part of said seat to an intermediate portion of said frame above said leg rest, and means for pivotally connecting the rear extremity of said frame to the forward ends of said side members; pivotal connections between the forward end of said series of articulated rests and the rear portions of said seat and said side members, whereby an angular disposition between said frame and said seat and side members form a chair and a co-planar disposition forms a table; latching means associated between said seat and said side members for retaining said structure in chair or table formation; and a support for said chair and table structure comprising a hollow pedestal and a standard attached at its upper end to the bottom of said seat and reciprocably and rotatably mounted within said pedestal.
2. In a convertible chair and table structure for the use of physicians composed of a plurality of relatively movable sections comprising a foot rest, a seat, a leg rest intermediate said foot-rest and seat, a series of articulated rests beyond said seat, and a pair of side members on opposite sides of said seat spanning a portion thereof and a portion of said series of articulated rests; said series of articulated rests comprising a forward rest and a rear rest, means for pivotally connecting said rests whereby said rear rest may be swung downwardly with respect to said forward rest, each of said rests having a means for receiving and detachably connecting thereto a head rest, a frame for supporting said leg rest; means for pivotally connecting said foot rest to the forward extremity of said frame below said leg rest, means for pivotally connecting the forward part of said seat toan intermediate portion of said frame above said leg rest, and means for pivotally connecting the rear extremity of said frame to the forward ends of said side members;
pivotal connections between the forwardend of said series of articulated rests and the rear portions of said seatand side members, whereby an 7 angular disposition between 'said frame and said seat and side members form a chair and a co-' planar disposition forms a table; and latching 'meansassociated between said seat and said side members for retaining said structure in chair for table formation.
portion of"'saidserie's of articulated rests; said series of articulated rests comprising a forward rest and at least one cushion in addition to said forward rest, said forward rest being pivotally' connected to the rear portions of the said seat and side members, pivotal connections between said one cushion and said forward rest whereby relative movement may be irnparted to said cushionj and said forward rest in the same plane, and
' latching means associated with said cushion and said forward" rest for controlling said'movement; a fra'mefor supporting saidleg rest, means for pivotally connecting said foot rest to the forward extremity of's aid' frame below said leg rest, means for pivotally connecting the forward part of said seat to an intermediate portion of said frame above said leg rest, means for pivotally con-,
necting the rear extremity of said frame to the forward ends of said side members; pivotal connections between the forward end of" said serieso rt u d r ts d t re r o ons of s id seat and said side members, whereby an angular disposition between said frame and said seal; and side members forms a chair and a co-planar disposition forms a table; and latching means associated between said seat and said side mem bers for retaining said structure in chair or table formation. r
4. The combination set forth in claim 3 wherein said cushion comprised in said series of articulated rests is ofsubstantially circular shape for substantially its complete periphery, having a pair of lateral projections on opposite sides there: of in proximity to the rear thereof, said projections being displaced from the adjacent forward rest to permit relative pivotal movement therebetween. 7
5. The combination set forth in claim 3 wherein said cushion comprised in said series of articulated rests is of substantially circular shape for substantially its complete periphery, a pair of lateral projections on opposite sides thereof in proximity to the rearv thereof, said projections being displaced from the adjacent forward rest to permit relative pivotal movement therebetween, and at least one additional rest beyond said cushion having the forward edge thereof closely abutting said cushion and said lateral projeotions.
6. The combination claimed in 3 wherein is .provided a support for said chair and table structure comprising a hollow pedestal and a standard attached at its upper end to the bottom of said seat and reciprocably and rotatably mounted within said pedestal.
EDWARD D. HOLME.