US 2724592 A
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Description (OCR text may contain errors)
Nov. 22, 1955 A. J. PFAUS ADJUSTABLE CHAIR FOR EXERCISING APPARATUS 2 Sheets-Sheet l Filed Aug. 18, 1953 NOV 22, 1955 A. J. PFAus 2,724,592
ADJUSTABLE CHAIR FOR EXERCISING APPARATUS u Filed Aug. 18, 1955 2 Sheets-Sheet 2 ,Iggy
36 l l l i 62 Andrew d Pfaus INI/EN TOR.
BY QM WWW 5MG:
ADJUSTABLE CHAIR FOR EXERCISING APPARATUS Andrew J. Pfaus, Great Neck, N, Y. Application August 18,1953, Serial No. 375,008 t 1 Claim. `(Cl. 27e- 58) This invention relates to new and useful improvements and structural refinements in adjustable chairs, and the principal object of the invention is to provide a chair of the character herein described, which is `particularly well adapted for use in association with mechanical apparatus such as is employed for exercising foot and leg muscles.
Specifically, the invention concerns `itself with the` provision of an adjustable chair such as may be used with the exercising apparatus disclosed in my copending patent application, Serial Number 317,109, filed on October 27, 1952, the arrangement of the adjustable chair being such as to enable the user to assume a correct posture while the exercising apparatus is being manipulated.
An important feature of the invention resides in its versatile adjustability, both from the standpoint of seating height and distance from the exercising apparatus, while another feature of the invention resides in its foldability which enables the same to be readily stored and conveniently transported when not in use.
Some of the advantages of the invention lie in its simplicity of construction, in its efficient and dependable operation and its adaptability to economical manufacture.
These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:
Figure 1 is a side elevational view of the invention;
Figure 2 is a top plan view thereof;
Figure 3 is a vertical sectional detail, on an enlarged scale, taken substantially in the plane of the line 3-3 in Figure 2; t
Figure 4 is a sectional detail, taken substantially in` the plane of the line 4 4 in Figure l;
Figure 5 is a sectional detail, taken substantially in the plane of the line 5 5 in Figure 2;
Figure 6 is a sectional detail, taken substantially in the plane of the line 6-6 in Figure 1;
Figure 7 is a sectional detail, taken substantially in the plane of the line 7-7 of Figure 3;
Figure 8 is a sectional detail, taken substantially in the plane of the line 8-8 in Figure 3;
Figure 9 is a fragmentary perspective view illustrating one end portion of one of the arm rests used in the invention; and
Figure 10 is a perspective view of the chair in its folded position.
Referring now to the accompanying drawings in detail, the adjustable chair is designated generally by the reference character and embodies in its construction a horizontally elongated base 22 which is preferably formed from tubular material and includes slidably telescoped sections 22a, 22b, so that the length ofthe base may be adjusted as desired. The base 22 is secured in rice a preadjusted position by suitable set screws 24 and one end portion of the base is provided with clamps 26 whereby an exercising apparatus designated generally by the reference character 28 may be attached to the base. As already explained, this exercising apparatus may be of such type as is disclosed in my copending application Serial Number 317,109, filed October 27, 1952.
The intermediate portion of the side members of the base 22 may be equipped with rubber sleeves 30, or the like, so as to prevent the base from slipping, particularly when the device is submerged in water, such as for example, during hydrotherapy.
A seat structure designated generally by the reference character 32 is provided on the opposite end portion of the base` 22 and includes a plurality of slidably telescoped, vertically adjustable legs 34 `which are tubular in construction and contain compression springs 36 which urge the legs to their extended positions.
The upper ends of the legs 34 are connected together by side members 38, 40 and a suitable seat platform 42 is fastened to these side members, as shown.
Moreover, a pairof clamp brackets 44, provided with clamping screws 46, are slidably positioned on the side` members 38 and a substantially U-shaped frame 48 of a back rest is pivotally connected to the brackets 43, as indicated at 52. As is best shown in Figures 1 and 10, the back rest50 may be swung from an upright,
operative position to a folded inoperative position wherein it is superposed on the seat panel or platform 42.
By virtue of the clamp brackets 43, the back rest 50 may be adjusted forwardly and rearwardly on the seat structure so that it is closer to or further away from the foot pedals 54 of the exercising apparatus 28. Moreover, by virtue of the vertical adjustability of the legs 34, the seat platform 42 may be raised or lowered. However, means are provided for locking the seat platform in a predetermined elevated position as well as for limiting the extent of vertical adjustment thereof, these means consisting of a pair of slidably telescoped tubular members 56, 58, the member 58 being secured to a transverse brace 60 at the underside of the seat platform 42, while the member 56 is similarly secured to a transverse brace 62 on the base 22. The member 56 is provided at the upper end thereof with a clamp 64 which is frictionally engageable with the member 58, so as to sustain the seat in a predetermined, elevated position. However, as soon as this clamp is loosened, the aforementioned springs 36 will tend to raise the seat to the desired height and, of course, the seat may be lowered by simply pressing the same downwardly against the resiliency of the springs.
The aforementioned member 58 contains an axial rod 66 which is slidable in a tubular member 68 disposed in the member 56 and the rod 66 is provided at its lower end with an enlarged head 70, the later 'being engageable with a stop 72 at the upper end of the member 68, so as to limit the extent of upward sliding movement of the seat under the influence of the springs 36.
The invention also contemplates the provision of a pair of substantially L-shaped arm rests 74 which are removably positioned at the opposite sides of the seat, the forward or lower portions of the arm rests being receivable in sockets '76 on the side members 38 at the front of the seat platform. These sockets are equipped with clamping screws 78 for the purpose of sustaining the arm rests in position and it will be also observed that a transverse rod 80 extends through the front of the side members 40 and through the sockets 76, as is best shown in Figure 4. The end portions of this rod are receivable in notches 82 provided in the lower ends of the arm rests 74, whereby the arm rests are prevented from swinging or twisting laterally.
ably disposed in tubular sockets 84 which are carried by the side portions of the frame 48 of the back rest 86 for'f'the purposehoiA sustaining the larm rests inr position'. When^-thewscrews86 are loosened; the back rest 48' may-be' shifted forwardly and rearwardly of the seat 1 platform-.42 whilei-the armrests-simply slidethroughthe socketsf84'.
When the invention i`snoti'n use, the arm rests 74 may be removedfr'om the socketstructure and stored in a pair of4 spring-clips 88 which are axed to the back ofV the bado-rest 50; as illustrated inf Figure l0.
It islto be alsownoted'th'atthe superstructure of theseat may be separatedfr-,omthe-'base 22 by simply with drawing theupperfsportions#of' the telescoped legs 34 from-the l'owei` portions'fthereof, loosening the clampjvt and' separat-ing the aforementioned member 58 from the member 5'6faf'ter` disconnecting` the member 68 from the 1 brace-*62, t'o which the member 68 is attached by a removable screw90' (fsee` Figure 3).
From the-foregoing, thevconstruction and operation of" thefdevicelwill be readily'understoodl andfurther eX'- planationisfbeli'eved to be unnecessary.- However, since An adjustable chair comprising an elongated base frame including telescopically adjustable pairs of opposite side frame members, a set of telescopically adjustable legs rising from the side frame members of one of said pairs, horizontal side members connecting the upper ends of said legs, a seat platform supported by said horizontal side members, a pair vof bracketsi sleeved onto saidhorizontal side members for adjustment along the same, a back rest pivoted on said brackets for folding downwardly over the seat' platform, -a pair ofv horizontal cross membersjone extending between-said I horizontal-, side members and the other extending between the side frame members of said one pair, and a'fpair of telescopically adjustable tubular members xed to said cross members, respectively, and one clampingly engaging the other to hold said legs in different adjusted positions.
References Citedin-the file ofthis patent