US3139257A

US3139257A - Cantilever stool construction

Info

Publication number: US3139257A
Application number: US219497A
Authority: US
Inventors: Paul L Dodds
Original assignee: Individual
Current assignee: Individual
Priority date: 1962-08-27
Filing date: 1962-08-27
Publication date: 1964-06-30
Anticipated expiration: 1981-06-30

Description

June 30, 1964 P. L. DODDS CANTILEVER STOOL CONSTRUCTION Filed Aug. 27, 1962 FIG.

' 77 FIG.

INVENTOR. PAUL. L. DooD s;

'rroR/VE Y United States Patent() 3,139,257 CANTILEVER STOL CNSTRUCTION Paul L. Dodds, 142.7 E. 6th St., Los Angeles, Calif. Filed Aug. 27, 1952, Ser. No. 219,437 2 Claims. (Cl. 24S-220.5)

The present invention relates to cantilever stools of the type which are generally employed in restaurants or cafes forwardly of a counter. The stool of the invention is adapted to be rotated relative to its support structure and to be self-aligning in front of the counter when enforced turning movement is released.

An object of the invention is to provide a cantilever stool construction which allows installation rapidly and accurately and at reduced expense over more elaborate constructions.

A further object is to provide a cantilever stool construction which permits adjustment of the support member for the stool relative to a counter so that the stool may be either positioned closer to the counter or further away therefrom after an installation.

A further object is a cantilever stool construction in which a large multiplicity of stools may be easily aligned by an installer with minimum of effort and time.

Another object is the provision of a cantilever stool construction which is simple of construction and installation, inexpensive in cost of manufacture, of few parts, and generally superior to cantilever stool construction now known to the inventor.

In the drawing:

FIGURE l is a fragmentary sectional vieW showing one form of cantilever stool construction of the invention;

FIGURE 2 is a fragmentary, enlarged transverse sectional view showing one form of means for securing a support tube within a tubular sleeve,

FIGURE 3 is an enlarged fragmentary sectional View on the line 3 3 of FIGURE 2;

FIGURE 4 is an enlarged fragmentary sectional view on the line 4-4 of FIGURE 2;

FIGURE 5 is a transverse longitudinal sectional view of a modiiied form of construction for securing the support tube within a tubular sleeve;

FIGURE 6 is a sectional View on the line 6-6 of FIGURE 5; Y

FIGURE 7 is a plan view of means used in securing .the support tube to the tubular sleeve in FIGURES 5 andr 6; and,

FIGURE 8 is a fragmentary sectional View onthe line 8 8 of FIGURE v5. l

Referring now to the drawing, I irst provide a tubular sleeve 1 for receiving the leg or support tube designated generally as 2V which carries at its 4upper end a chair or stool 3 of some form. It is understood that a series'of tubular sleeves. and support tubes are employed depend- :ing' on thenumber ofchairsor stools desired before a vcounter 4, shown in dotted lines in FIGURE l.

The tubular sleeve 1 in the presentinstanceis substantially square sectioned, -although other angular sections could be used. The tubular sleeve 1 has attached to the innerk end S thereof, web 6 of an angular bracket 7 having a lflange 8. This angular bracket has a web of a height sufficient to elevate the support tube a certain distance from the ange and, likewise, close the inner end ofthe tubular sleeve. The web is scured` tothe tubular sleeve by welding or other means, as indicated generally at 9. Spaced forwardly from theinner end of the tubular sleeve and adjacent the outer end 10 thereofis a Z or angle sectioned bracket 11 having upper and

lower ilanges

12 and 13 withinterposed web 14. The

anges

8 and 13 o f the

brackets

7 and 11 lie in the same plane. The brackets Vmay be of extended length depending on the number of counter seats and support .tubes therefor. f The floor line ICC is indicated at 2t) and after the brackets, depending on the number of stools or chairs, have been secured to the iioor at the floor line in any suitable manner, such as by bolts, not shown, a concrete fill is made, as shown at 2.1. This concrete fill has a raised portion at 22 Which supports the counter 4 and a step portion at 23 which surrounds the tubular sleeve and the brackets. This concrete ill extends substantially to the open front endv of the tubular sleeve, as shown in FIGURE 2 although the sleeve at its forward end extends through a terrazzo or othercoveringfindicated generally as 25 for the step and the portion 22as shown in FIGURE l. The entire iioor may be covered with the same terrazzo material, if desired, or by any other material, as is obvious. After the concrete has hardened, the tubular sleeve, depending on the numberv The leg or support tube 2 has a vertical portion 30,

a horizontal portion 31 and interconnecting portion 32 which is in obtuse angle relationship to the vertical and horizontal portions of the tube. In the present instance, the tube is of substantially square section, as shown in FIGURE 4, and the horizontal section thereof is adapted to lit with close tolerance within the tubular sleeve 1 so the end side play is eliminated. The horizontal portion of the support tube is provided inward from its open end 35 with a transverse wall or web 36, the wall or web being secured to the horizontal section in any approved manner such as by welding, as indicated at 37. The horizontal portion 31 has its top wall 38 provided with a cam face and the position of the pin ,40 is slightly spaced below the top wall 38 of horizontal tube portion 31. Meansare provided for turning the cam upon the pin comprising a bolt, designated generally as having a smooth shank at 51, a threaded shank portion 52 and a head 53. yT he head has an internal socket 53 for receiving a wrench to turn the screw shank'. The wall or rweb 36 is provided with a screw threaded transverse bore 54 for receiving the screw threads 52 of the bolt and the unthreaded end of the shank 51 has a round end 55 received in a concave depression 56 of the arm 45. Obviously,

when the bolt is rotated in one direction pressure is brought to bear againstthe arm to lturn the cam head forcing the same through theslot 3 9 against the inner surface of the tubular sleeve' 1, thus binding the horizontal section 31 of thetube against any movement longitudinally of tubel. It will be seen from FIGURES 3 and 4 thatthe cam head and its arm 45' are of extended width and` substantially the `widthbetween the sides 40' and l of horizontal portion 31. Thus, the bending action occurs over an extended area. To provide ready access to the head of the bolt,-I provide an opening in tube portion 32 adapted to receive a spring linger cap ,61.

The form of-the invention shown in FIGURE 5 includes, as before, the concrete lill. and the tubular sleeve mounted by brackets attached to the iioor and, accord-YA Ixingly, the same reference numerals applied in FIGURES Vl and 2 for like elements will be applied here. One of thediiferences between the present construction as shown in FIGURE 5 and the previous constructionof FIGURES 1 and 2, resides in the leg or .support tubef'tl.'k Tube 70 is cut so far y,ashthe horizontal portion is concerned," as shown at 71, and forms a sleeve section for a horizontal tube 72 adapted to t with close tolerance within the tubular sleeve 1 which may be termed the foundation support sleeve. The tube 72 is in obtuse angle relationship, thesame as appears for the support tube shown at 32 and is provided with the vertical portion 30. Thus, the inner end of the horizontal tube 32 is open while the opposite end is angled and secured to the obtuse angle portion of the support tube, as shown at 73 and 74. Tube 72, by its construction with relationship to the portion 71, forms a shoulder at 7S which limits the degree of insertion of tube 72 within the tubular sleeve 1. I provide a transverse wall or web within tube 72 at 76, the wall being secured by welding or other means, to the tube and the top wall 77 of tube 72 is provided with two parallel spaced apart

longitudinal slots

78 and 79, which are closely adjacent sides of tube 72 and provide a zone 30 of ribbon form which may be deformed as hereinafter set forth. Within tube 72 is a lever designated generally as 81. This lever is of arcuate form and varies in depth from a fulcrum end 82 to a force end 83, as shown in FIGURE 5. The lever varies in transverse width between the fulcrum end and the force end, as shown in FIGURE 7 at 8d for intermediate parts, the fulcrum end and the force end being of greater width. The top of the intermediate portion of the lever is provided with a convex portion 85 which is termed a cam portion. The lever lies within the tube 72 between the top wall 87 and bottom wall 88 of tube 72'. The convex or cam portion 85 engages the ribbon portion S of tube 72 yand lies intermediate the

slots

78 and 79, as shown in FIGURE 6. A screw threaded stud 100 has threaded engagement with the T nut 101 which extends transversely of portion 71 and tube 72. The stud has a rounded end 102 received in a concavity 103 in the force application end 83 of the lever. The threaded type nut may be conveniently formed and attached in any approved manner to

tubes

71 and 72 so as to resist stress. Thus, when the screw is rotated in one direction, force is applied to the force end 83 of the lever which fulcrums about point 32 and raises the cam S5 against the ribbon portion 80 of tube 72. The lever shown is of the second class and, hence, there is a difference in lever arm lengths. This applied force deforms the ribbon S0 and moves the same against the tubular sleeve 1 to bind the tubular sleeve and tube 72 into working relationship and against slide movement. The form of the invention shown for either FIGURES 2 or 5 allows an adjusted position for the horizontal tube `35 in one instance and 72 in the second instance relative carried by the support tube either directly, or by an exp tension thereof. In the case of the form shown in FIG- URE 2, the slot 3:9L may be of greater length so that increased adjustmentmay be lobtained between the horizontal tube section 31 and tubular sleeve 1. The same is true 4 for the form shown in FIGURE 5 although the slots, depicted in the drawing for FIGURE 6, shows greater length and hence a greater length of ribbon adapted to be deformed. In either case, adjustment is easy of accomplishment by providing'the screw stud with a socket type head to receive a wrench and the same is true for that form of the invention shown in FIGURE 2. Generally in installing the devices, the tubular foundation sleeve is incorporated Within the concrete lill and afterwards Ythe legs or support tubes are brought into position and adjusted whereupon the seats 3 may be placed in position on the vertical section 30 of said support tube.

A concrete ll is not necessary as long as the

brackets

7 and 11 are securely anchored to the floor to resist stress imposed upon the tubular sleeve 1. Ordinary construction may be resorted to for the step with the tubular sleeve enclosed therein. In certain installations for the invention the tubular sleeve and the brackets may be enclosed in any ornamental device merely for appearance purpose.

I claim:

l. In cantilever chair construction, a support tube provided with a vertical portion upon which a seat is supported and a horizontal portion; a foundation tubular sleeve, the horizontal portion of the support tube telescoped within the foundation tubular sleeve, and means carried by the horizontal portion of the support tube for securing the horizontal support tube within the tubular sleeve; said means comprising: an arcuate lever having an intermediate top cam portion, one end of the lever `fulcruming against the horizontal portion of the support tube, and means for applying a force to the opposite end of the lever to move the cam portion in one direction to bind the horizontal portion of the support tube against the tubular sleeve.

2. In cantilever chair construction, a support tube provided with a vertical portion upon which a seat is supported and a horizontal poriton; a foundation tubular sleeve, the horizontal portion `of the support tube tele- Vscoped within the foundation tubular sleeve, and means carried by the horizontal portion of the support tube for securing the horizontal support tube within the tubular sleeve; said horizontal portion of the support tube formed with a pair of longitudinally extending parallel slots, an arcuate lever of the second class provided with `an intermediate cam portion within the horizontal support tube portion, one end of said lever being fulcrnmed Within the horizontal section of the support tube, and

,means for moving the opposite end of said arcuate lever to fulcrum the same about the fulcrum point to position the cam portion against that portion of the horizontal section of the support tube between the slots and force said portion into engagement with the tubular sleeve.

References Cited in the tile of this patent UNITED STATES PATENTS 661,620 Rumbarger Nov. 13, 1900 3,003,730 Dodds Oct. l0, 1961 FOREIGN PATENTS j 585,815 Canada Oct. 13, 1959

Claims

1. IN CANTILEVER CHAIR CONSTRUCTION, A SUPPORT TUBE PROVIDED WITH A VERTICAL PORTION UPON WHICH A SEAT IS SUPPORTED AND A HORIZONTAL PORTION; A FOUNDATION TUBULAR SLEEVE, THE HORIZONTAL PORTION OF THE SUPPORT TUBE TELESCOPED WITHIN THE FOUNDATION TUBULAR SLEEVE, AND MEANS CARRIED BY THE HORIZONTAL PORTION OF THE SUPPORT TUBE FOR SECURING THE HORIZONTAL SUPPORT TUBE WITHIN THE TUBULAR SLEEVE; SAID MEANS COMPRISING: AN ARCUATE LEVER HAVING AN INTERMEDIATE TOP CAM PORTION, ONE END OF THE LEVER FULCRUMING AGAINST THE HORIZONTAL PORTION OF THE SUPPORT