US3004743A - Music stands - Google Patents

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US3004743A
US3004743A US760981A US76098158A US3004743A US 3004743 A US3004743 A US 3004743A US 760981 A US760981 A US 760981A US 76098158 A US76098158 A US 76098158A US 3004743 A US3004743 A US 3004743A
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plug
screw
skirt
wall
tapered
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10Telescoping systems
    • F16B7/14Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1463Telescoping systems locking in intermediate non-discrete positions with the expansion of an element inside the outer telescoping member due to the axial movement towards a wedge or a conical member
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10Telescoping systems
    • F16B7/14Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1445Telescoping systems locking in intermediate non-discrete positions with a rubber bushing gripping inside the outer telescoping member by a radial expansion due to its axial compression

Definitions

  • FIG. 1 MUSIC STANDS Filed Sept. 15, 1958 FIG. 1
  • This invention relates to new and useful improvements in music stands such as commonly utilized by the members of an orchestra orband, and by the director of the group. Such stands are usually made vertically adjustable so that they may be adjusted to support the music at the desired elevation for each individual player or musician.
  • the present invention aims to provide a simple and inexpensive music stand comprising a novel and uniquely constructed securing means for securing the movable member of the supporting standard in adjusted position in the fixed member, and whereby the movable member may be readily slid from one position to another by the player or operator, by simply grasping it and moving it to the desired position. No separate tools are required to free the movable member from the relatively fixed member.
  • a further object is to provide a vertically adjustable music stand, a composite supporting standard comprising a fixed lower member and a movable upper member, said members being disposed in axial alignment, and the upper member being slidable in the lower member to vertically adjust the rack secured to the upper end thereof, and means being provided within the fixed member for securing the movable member in adjusted position within the fixed member, such adjustment being readily effected by simply grasping'the movable member and manually pulling it upwardly, or forcing it downwardly in the fixed member, thereby to bring the music rack into alignment with the players eyes.
  • a further and more important object is to provide a vertically adjustable music stand comprising inner and outer-tubular members telescopically connected together, one ofs aid members having its lower end'fixed to a suitable base, and the other :member having'its lower end portion slidably received in the fixed member, said fixed member having a non-metallic bushing secured in its upper end for guidingly supporting the inner member therein, and the lower end of said inner member having a non-metallic plug secured thereto having means for laterally. expanding it intofrictional engagement with the wallofthe-bore of the outer member, thereby to retain the movable member in fixed relation therein.
  • a further object of the invention resides in the specific construction of the plug provided in the lower end of the innermember, said plug being constructed of nylon and having a skirtdepending from its lower end and slightly flared outwardly in position to engage the wall of the bore of the outer member when the wall of said skirt is outwardly expanded, an expanding element being movably mounted within said skirt and constantly engaging said skirt with an expanding force thereby to force the nited States Patent wall of the skirt into frictional engagement with the wall of said fixed upright member, the frictional engagement between said plug and the fixed member being sufficient to adequately support the vertically slidable inner memher in any position within the fixed supporting member.
  • FIGURE 1 is a view showing a sectional elevation of the lower portion of a music stand embodying my in vention
  • FIGURE 2 is a view showing the nylon plug detached from the inner tubular member to show the simple con-. struction thereof
  • FIGURE 3 is a view showing the expandable plug preferably used within the skirt of the nylon plug shown in FIGURE 2 to expand the walls of the skirt into frictional engagement with the wall of the lower fixed mem-' ber of the stand; movable member in vertically adjusted position therein;
  • FIGURE 4 is a view showing a slightly modified con struction wherein a screw is utilized for expanding the skirt of the nylon plug; 7
  • FIGURE 5 is a cross-sectional view on the line 55 of FIGURE 4.
  • IGURE 6 is a view showing a modified construction wherein a non-rigid plug is fixed in the lower end of the inner telescopic member and has a threaded hole therethrough for receiving a screw having its lower end portion traversing a resilient plug, which, when compressed in an axial direction by manipulation of said screw, is radially; expanded into frictional engagement with the wall of the fixed telescopic member, thereby to frictionally secure the inner member in adjusted position therein.
  • the novel music stand herein disclosed is shown com prising a base 2 having a socket 3 therein which preferably is slightly tapered as shown for receiving the taperedterminal 4 of an upright tubular member 5.
  • An anchor-5 ing plug 6 is shown fitted into the lower end of the tubular member 5, and has a screw 7 received in threaded engagement therewith which passes through an aperture 8 in the wall portion 9 of the base 2.
  • the head 11 ofscrew 7 may seat against the bottom surface of wall portion 9.
  • the anchoring plug 6, it will be noted, is tapered to fit the taper of the inner lower end of the tubular them her '5, whereby when screw 7 is manipulated to draw the plug downwardly, the plug will compress the tapered wall portion of the tubular member against the Wall of the tapered socket 3 in the base, thereby to firmly secure the upright member 5 in position in the base 2.
  • the base may be provided with a plurality of radial extending arms.
  • Patented o r. 17, 1961 3 to add stability thereto and prevent the music stand from readily tipping over when accidentally engaged by an individual passing thereby.
  • the nylon plug 15 secured to the lower end of the iitner member 13 has a portion 16 snugly fitted into the lower end of member 13.
  • An annular groove 17. may be provided in the periphery of plug 15'into which aportion of the wall of member 13 may .be compressed, as indi- 'at'ed at 18 in FIGURE 1, thereby to prevent the plug from accidentally becoming detached from member 13.
  • the .plug 15 has a depending skirt 19, whichis vertically slit as indicated at 21 inFIGURES and 5, whereby the sections 22 between adjacent slits 21 may readily be pressed outwardlyinto frictional engagement with the wall of the lower fixed member 5 by manipulation of the expandable plug 23, generally designated by the numeral 23. l v
  • the expandable plug 23 is preferably constructed of a synthetic resilient material such as rubber, which is compressible axially to cause it toradially expand into engagement with the wall of the skirt 19,- as is shown in FIGURE 1.
  • the plug 23 is axially apertured to receive a bolt or screw 24 having a nut .25 received in threaded engagement therewith.
  • An enlarged washer .26 is shown seated against the opposite or bottom end of theplug 23, to be engaged by the head 27 of screw .24.
  • the wall of the skirt is outwardly tapered from its upper end, and the exterior of the plug 23 is similarly tapered so that the plug may snugly fitinto the tapered socket defined by the skirt 19.
  • the plug 23 is readily retained within the skirt by friction, and from actual experience .has shown it is not likely to become detached from theskirt 19. .Should the frictional engagement of the skirt 19 with the wall of the upright tubular member 5 become insufficient to retain the inner tubular member 13 in adjusted position, the plug 23 may be expanded by manipulation of the screw 24, thereby to expand the diameter of the plug 23 to force the skirt into frictional engagement with the wall of the fixed tubular member 5, as will be understood. Access to the screw 24 of the expansible plug 23 may be had by removal ofthe screw 7 from the bottom of the base.
  • FIGURE 4 there is shown a slightly modified construction wherein a screw 28 is received inthreaded engagement with the upper end of plug 15 and has an en'-' r a s he d 29 wi h. a 3 291.... .pc iph y w i fit against the inner surface of the tapered wall of the skirt 19.
  • the screw head 27 is rotated by the insertion of a screw driver thigpughithebottom of the base, as hereinbefore stated, wh 'eb'y thejfs'kirt may readily be expanded to the desired "degree, as will be readily understood. 1
  • FIGURE 6 'tliereisillust'rateilanother modified construction, wherein .the non resilientplug 31; is secured in the lower end Q!- th t bu ar. mem e 133116 s a threaded bore therein rfor receivingthe threaded terminal of a screw 32.
  • the .lower ,end portion of the screw traverses an'axialbore in Qa resilient pl ug 33 supported on the screw 32 between disks orwashers 34 and .35.
  • the screw has a head 36 which may readily be manipulated by a conventional screw ,driver whercby the frictional e to t eph s 3.
  • w thrthewa o th p t member 5 may readily be varied by ,relatively rotating the screwin the plug-31, will readily be understood when it is noted that by tightening the screw in plug 31, the resilient plug 33,is compressed-between disks 34 and 35, and thus is radially expanded into frictional engagement with the wall-of member 5, as will be. understood.
  • the usual rack or music supporting head of the upper end of the music stand is suitably pivoted to the upper end of member 13in the usual manneig and as it forms no part of the present invention, it has been omitted from thedrawing.
  • the nylon bushing 14 an plug 15 haveproven extremely practical in the operation-of the music stand herein disclosed.
  • the nylon skirted plug 15 at the lower end .of the inner telescopicunember13 makes it possible to so adjust the frictional contactbetween said plug and the wall of member 5,, that the upper telescopic member 5 may be supported-in any desired position in the fixed telescopic member 5 without the use :of separable locking elements, such as .screwsg ami the, ke.
  • the nylon from which the bushing 14 and the plug 15 are made wears extremely ,well, and has the inherent ability to maintain afree sliding contactbetween the parts, and with the assurance theupper memberl ⁇ is not likely to accidentally shiftiits position in member 5.
  • the frictional. engagement 'ofthe skirt of the plug 15 with the wall of the telescopic member 5 is so adjusted by manipulation of the expansible plug 23, that the upright movable member 13 will readily support all of the music tobe playedat a given concert by a single player.
  • the frictional engagement of the skirt of the plug -15 isso adjusted that the weight of the sheet 'music for a full concert which is placed on the stand is not likely to capsethestand to shift or sag from itsoriginal position during a concert.
  • Abase having 'a tapered bore therein, an outer member having a tapered end fitting the tapered bore of said base, a tapered plu'gwithin said outer member and expanding said tapered end of said outer member into frictional gripping engagement with the tapered bore of said base when said plug is forced downwardly, a cap screw traversing an aperture in the bottom wall of said tapered plug and threadably engaging the tapered plug in said base outer member to draw said tapered plug into wedging engagement with said outer member, a bushing in the top of said outer member, an inner member slidably engaging said bushing and extending into said outer member, a friction plug secured to the lower end of said inner member, said friction plug having a split skirt, a resilient member frictionally retained within said split skirt, and a screw thread operated means clamping said resilient member axially; whereby tightening of said screw thread operated means compresses said resilient member axially and expands it radially to force said split skirt into frictional engagement with the inside of said outer member, said cap screw being removable to provide
  • a music stand comprising inner and outer telescopic members, a non-metallic plug fixedly secured in the lower end of said inner member and having its lower end portion projecting well below the lower end of said inner member, said plug having an axial tapered bore therein defining an annular tapered wall, said wall having a plurality of slits therein extending upwardly from its lower edge, a resilient element fitted into said tapered bore for expanding the slitted wall of said bore into frictional en- .6 gagement with the wall of said outer telescopic member, thereby to frictionally resist relative axial movement between said telescopic members, said resilient element having an aperture extending axially therethrough, a screw traversing said aperture and having a threaded terminal, a nut received in threaded engagement with the threaded end of said screw, said screw having an enlarged head at its opposite end, and means permitting an instrumentality to be inserted into the lower end of said outer telescopic member and into engagement with the head of said screw, whereby said screw may

Description

17, 1961 H. J. WENGER 3,004,743
MUSIC STANDS Filed Sept. 15, 1958 FIG. 1
IN VENTOR. i HARRYZ WENGER A 'r TORNE Ks 3,004,743 MUSIC STANDS Harry J. Wenger, Owatonna, Minn. Filed Sept. 15, 1958, Ser. No. 7 60,981 2 Claims. (Cl. 248-161) This invention relates to new and useful improvements in music stands such as commonly utilized by the members of an orchestra orband, and by the director of the group. Such stands are usually made vertically adjustable so that they may be adjusted to support the music at the desired elevation for each individual player or musician.
There are now available on the market music stands comprising an upright st'andard composed of a pair of telescopic members, one of which is axially movable in the other to permit vertical adjustment of the usual music rack of the stand. Such stands as now commonly constructed are usually provided with one or more screws or threaded elements for securing the movable telescopic member in adjusted position in the fixed telescopic member. Such screws or securing elements must be normally operated when it is desired to raise or lower the music stand. Itmay also be necessary for the musician to use both hands when adjusting such a stand which, at times, may prove highly impractical.
, The present invention aims to provide a simple and inexpensive music stand comprising a novel and uniquely constructed securing means for securing the movable member of the supporting standard in adjusted position in the fixed member, and whereby the movable member may be readily slid from one position to another by the player or operator, by simply grasping it and moving it to the desired position. No separate tools are required to free the movable member from the relatively fixed member. v I
g A further object is to provide a vertically adjustable music stand, a composite supporting standard comprising a fixed lower member and a movable upper member, said members being disposed in axial alignment, and the upper member being slidable in the lower member to vertically adjust the rack secured to the upper end thereof, and means being provided within the fixed member for securing the movable member in adjusted position within the fixed member, such adjustment being readily effected by simply grasping'the movable member and manually pulling it upwardly, or forcing it downwardly in the fixed member, thereby to bring the music rack into alignment with the players eyes.
' A further and more important object is to provide a vertically adjustable music stand comprising inner and outer-tubular members telescopically connected together, one ofs aid members having its lower end'fixed to a suitable base, and the other :member having'its lower end portion slidably received in the fixed member, said fixed member having a non-metallic bushing secured in its upper end for guidingly supporting the inner member therein, and the lower end of said inner member having a non-metallic plug secured thereto having means for laterally. expanding it intofrictional engagement with the wallofthe-bore of the outer member, thereby to retain the movable member in fixed relation therein.
A further object of the invention resides in the specific construction of the plug provided in the lower end of the innermember, said plug being constructed of nylon and having a skirtdepending from its lower end and slightly flared outwardly in position to engage the wall of the bore of the outer member when the wall of said skirt is outwardly expanded, an expanding element being movably mounted within said skirt and constantly engaging said skirt with an expanding force thereby to force the nited States Patent wall of the skirt into frictional engagement with the wall of said fixed upright member, the frictional engagement between said plug and the fixed member being sufficient to adequately support the vertically slidable inner memher in any position within the fixed supporting member. Other objects of the invention reside in the specific construction of the nylon plug secured to the lower end of the inner member, and the means provided for radially expanding or contracting the depending skirt to permit sliding movement of the upper telescopic member within the lower fixed telescopic member to vertically adjust the music rack, as hereinbefore stated; and in an adjustable music stand, wherein the guide means for the inner tubular member and the bushing provided at the lower end thereof are made of nylon to provide ample wear and free sliding movement of the inner member within the outer fixed member. I These and other objects of the invention and the means for their attainment will be more apparent from the following description taken in connection with the accompanying drawings. I In the accompanying drawings there has been disclosed a structure designed to carry out the various objects-of the invention, but it is to be understood that the inven-i tion is not confined to the exact features shown, as vari-; ous changes may be made within the scope of the claims which follow.
In the drawings: FIGURE 1 is a view showing a sectional elevation of the lower portion of a music stand embodying my in vention; FIGURE 2 is a view showing the nylon plug detached from the inner tubular member to show the simple con-. struction thereof; FIGURE 3 is a view showing the expandable plug preferably used within the skirt of the nylon plug shown in FIGURE 2 to expand the walls of the skirt into frictional engagement with the wall of the lower fixed mem-' ber of the stand; movable member in vertically adjusted position therein; FIGURE 4 is a view showing a slightly modified con struction wherein a screw is utilized for expanding the skirt of the nylon plug; 7
FIGURE 5 is a cross-sectional view on the line 55 of FIGURE 4; and
IGURE 6 is a view showing a modified construction wherein a non-rigid plug is fixed in the lower end of the inner telescopic member and has a threaded hole therethrough for receiving a screw having its lower end portion traversing a resilient plug, which, when compressed in an axial direction by manipulation of said screw, is radially; expanded into frictional engagement with the wall of the fixed telescopic member, thereby to frictionally secure the inner member in adjusted position therein. The novel music stand herein disclosed is shown com prising a base 2 having a socket 3 therein which preferably is slightly tapered as shown for receiving the taperedterminal 4 of an upright tubular member 5. An anchor-5 ing plug 6 is shown fitted into the lower end of the tubular member 5, and has a screw 7 received in threaded engagement therewith which passes through an aperture 8 in the wall portion 9 of the base 2. The head 11 ofscrew 7 may seat against the bottom surface of wall portion 9. The anchoring plug 6, it will be noted, is tapered to fit the taper of the inner lower end of the tubular them her '5, whereby when screw 7 is manipulated to draw the plug downwardly, the plug will compress the tapered wall portion of the tubular member against the Wall of the tapered socket 3 in the base, thereby to firmly secure the upright member 5 in position in the base 2. The base may be provided with a plurality of radial extending arms.
Patented o r. 17, 1961 3 to add stability thereto and prevent the music stand from readily tipping over when accidentally engaged by an individual passing thereby.
.Slidably mounted within the fixed tubular member 5 a relatively smaller tubular member 13. Member13 is guiding'ly supported in the tubular member 5 by means of a bushing 14, fitted into the upper end ofmember 5, and a .plug 15 fitted into the lower end of the inner member13, as clearly illustrated in FIGURE 1.
.An important feature of the present invention resides in the construction of the bushing 14 andplug 15. These elements are Constructed of nylon, which is highly impervious to moisture, and provides an extremely smooth and hard wearing surface for the inner slidable member 13. The bushing 14 is pressed into the upper en'd of the tubular member 5, and its bore snugly fits the'periphery of the telescopic member 13, whereby said .member is freely slidable in member 5. p i
The nylon plug 15 secured to the lower end of the iitner member 13 has a portion 16 snugly fitted into the lower end of member 13. An annular groove 17.may be provided in the periphery of plug 15'into which aportion of the wall of member 13 may .be compressed, as indi- 'at'ed at 18 in FIGURE 1, thereby to prevent the plug from accidentally becoming detached from member 13.
The .plug 15, it will be noted, has a depending skirt 19, whichis vertically slit as indicated at 21 inFIGURES and 5, whereby the sections 22 between adjacent slits 21 may readily be pressed outwardlyinto frictional engagement with the wall of the lower fixed member 5 by manipulation of the expandable plug 23, generally designated by the numeral 23. l v
The expandable plug 23 is preferably constructed of a synthetic resilient material such as rubber, which is compressible axially to cause it toradially expand into engagement with the wall of the skirt 19,- as is shown in FIGURE 1. The plug 23 is axially apertured to receive a bolt or screw 24 having a nut .25 received in threaded engagement therewith. An enlarged washer .26 is shown seated against the opposite or bottom end of theplug 23, to be engaged by the head 27 of screw .24. Thus, when the nut 25 is tightened-on the screw 24, theplug 23 is compressed between the nut 25 and washer .26, which causes it to expand into engagement with the wall of skirt 19. v
The wall of the skirt is outwardly tapered from its upper end, and the exterior of the plug 23 is similarly tapered so that the plug may snugly fitinto the tapered socket defined by the skirt 19. The plug 23 is readily retained within the skirt by friction, and from actual experience .has shown it is not likely to become detached from theskirt 19. .Should the frictional engagement of the skirt 19 with the wall of the upright tubular member 5 become insufficient to retain the inner tubular member 13 in adjusted position, the plug 23 may be expanded by manipulation of the screw 24, thereby to expand the diameter of the plug 23 to force the skirt into frictional engagement with the wall of the fixed tubular member 5, as will be understood. Access to the screw 24 of the expansible plug 23 may be had by removal ofthe screw 7 from the bottom of the base. When this screw is removed, the aligned holes in the wall member 9 of the base and the plug 6 are exposed. A small screw driver may then be inserted through said aligned holes into engagement With'the slotted head 27 of screw 24, whereby the screw may readily be tightened to produce the necessary frictional contact between the skirt 19 and the wallof member 5, as will readily be understood by reference to FIGURE 1.
When the screw 7 is returned .to its normal position,- as'shown in FIGURE 1, the-screw head .27 in plug 23 is completely concealed and can .not be tampered with.
In FIGURE 4 there is shown a slightly modified construction wherein a screw 28 is received inthreaded engagement with the upper end of plug 15 and has an en'-' r a s he d 29 wi h. a 3 291.... .pc iph y w i fit against the inner surface of the tapered wall of the skirt 19. When the frictional engagement of ithe skirt with the member 5 is to be varied, the screw head 27 is rotated by the insertion of a screw driver thigpughithebottom of the base, as hereinbefore stated, wh 'eb'y thejfs'kirt may readily be expanded to the desired "degree, as will be readily understood. 1
In FIGURE 6 'tliereisillust'rateilanother modified construction, wherein .the non resilientplug 31; is secured in the lower end Q!- th t bu ar. mem e 133116 s a threaded bore therein rfor receivingthe threaded terminal of a screw 32. The .lower ,end portion of the screw traverses an'axialbore in Qa resilient pl ug 33 supported on the screw 32 between disks orwashers 34 and .35. The screw has a head 36 which may readily be manipulated by a conventional screw ,driver whercby the frictional e to t eph s 3. w thrthewa o th p t member 5 may readily be varied by ,relatively rotating the screwin the plug-31, will readily be understood when it is noted that by tightening the screw in plug 31, the resilient plug 33,is compressed-between disks 34 and 35, and thus is radially expanded into frictional engagement with the wall-of member 5, as will be. understood.
The usual rack or music supporting head of the upper end of the music stand is suitably pivoted to the upper end of member 13in the usual manneig and as it forms no part of the present invention, it has been omitted from thedrawing. p
The nylon bushing 14 an plug 15 haveproven extremely practical in the operation-of the music stand herein disclosed. The nylon skirted plug 15 at the lower end .of the inner telescopicunember13 makes it possible to so adjust the frictional contactbetween said plug and the wall of member 5,, that the upper telescopic member 5 may be supported-in any desired position in the fixed telescopic member 5 without the use :of separable locking elements, such as .screwsg ami the, ke. The nylon from which the bushing 14 and the plug 15 are made, wears extremely ,well, and has the inherent ability to maintain afree sliding contactbetween the parts, and with the assurance theupper memberl} is not likely to accidentally shiftiits position in member 5. N
In actual use, the frictional. engagement 'ofthe skirt of the plug 15 with the wall of the telescopic member 5 is so adjusted by manipulation of the expansible plug 23, that the upright movable member 13 will readily support all of the music tobe playedat a given concert by a single player. Inpther words, the frictional engagement of the skirt of the plug -15 isso adjusted that the weight of the sheet 'music for a full concert which is placed on the stand is not likely to capsethestand to shift or sag from itsoriginal position during a concert. A h sa m the use the qn sn e means o the inner member 13 permits said member to be readily slid up and downin the stationary member by simply grasping the member 13, asfwill be understood, I I The novel stand hereindisclosed also presents a very neat appearing deviccpf general type, as the upright has no projections, such .as lock screws, etc, usually found in most conventional stands of this general type. t The invention may beembodied in other specific forms without departing, from the essential characteristics thereof. Hence, the presentembodiments' are therefore to be consideredin all respects merely as beingillustrative and not as being restrictive, thescope of the invention'being' indicated by the appended claims rather than by the foregoing description, and all modifications and variations as fall within the meaning and purview and range of equivalency of the appended claims are there-= fore intended to be "embraced therein;
l. Abase having 'a tapered bore therein, an outer member having a tapered end fitting the tapered bore of said base, a tapered plu'gwithin said outer member and expanding said tapered end of said outer member into frictional gripping engagement with the tapered bore of said base when said plug is forced downwardly, a cap screw traversing an aperture in the bottom wall of said tapered plug and threadably engaging the tapered plug in said base outer member to draw said tapered plug into wedging engagement with said outer member, a bushing in the top of said outer member, an inner member slidably engaging said bushing and extending into said outer member, a friction plug secured to the lower end of said inner member, said friction plug having a split skirt, a resilient member frictionally retained within said split skirt, and a screw thread operated means clamping said resilient member axially; whereby tightening of said screw thread operated means compresses said resilient member axially and expands it radially to force said split skirt into frictional engagement with the inside of said outer member, said cap screw being removable to provide access to said screw thread operated means of said resilient member; whereby said screw thread operated means may be operated independently of relative rot-ation between said inner and outer members.
2. A music stand comprising inner and outer telescopic members, a non-metallic plug fixedly secured in the lower end of said inner member and having its lower end portion projecting well below the lower end of said inner member, said plug having an axial tapered bore therein defining an annular tapered wall, said wall having a plurality of slits therein extending upwardly from its lower edge, a resilient element fitted into said tapered bore for expanding the slitted wall of said bore into frictional en- .6 gagement with the wall of said outer telescopic member, thereby to frictionally resist relative axial movement between said telescopic members, said resilient element having an aperture extending axially therethrough, a screw traversing said aperture and having a threaded terminal, a nut received in threaded engagement with the threaded end of said screw, said screw having an enlarged head at its opposite end, and means permitting an instrumentality to be inserted into the lower end of said outer telescopic member and into engagement with the head of said screw, whereby said screw may be relatively rotated to expand said resilient element to vary the frictional engagement between the wall of said outer telescopic member and said skirt.
References Cited in the file of this patent UNITED STATES PATENTS 773,241 Wilton Oct. 25, 1904 1,999,844 McElroy Apr. 30, 1935 2,291,748 Neuwirth Aug. 4, 1942 2,337,719 Hueglin Dec. 28, 1943 2,503,997 Bu Miller April 11, 1950 2,695,800 Soucy Nov. 30, 1954 2,816,769 Noble Dec. 17, 1957 2,823,050 Lagerwall Feb. 11, 1958 2,846,171 Kronhaus Aug. 5, 1958 FOREIGN PATENTS 562,064 Germany Oct. 21, 1932
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Cited By (49)

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US3117392A (en) * 1961-12-29 1964-01-14 Bela B Junkunc Self-leveling devices
US3265346A (en) * 1964-10-06 1966-08-09 Bretford Mfg Inc Telescoping standard
US3333873A (en) * 1965-12-27 1967-08-01 Carl D Clark Structural adhering construction
US3402922A (en) * 1967-05-26 1968-09-24 Henry F. Mccan Safety means
US3604734A (en) * 1969-05-13 1971-09-14 Re Ly On Metal Products Inc Adjusting and locking mechanism for adjustable and collapsible table
US3695700A (en) * 1969-04-12 1972-10-03 Daimler Benz Ag Headrest, especially for seats in motor vehicles
US3711054A (en) * 1969-06-19 1973-01-16 F Bauer Continuously adjustable lifting devices
US3722903A (en) * 1970-10-26 1973-03-27 J Jones Adjustable ski pole with split retainer ring
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US20060255215A1 (en) * 2005-04-29 2006-11-16 Carnevali Jeffrey D Telescoping pole mount
US20070117661A1 (en) * 2005-11-21 2007-05-24 Lucas Michael E Head Retaining Mechanism for a Lacrosse Stick
US20080035805A1 (en) * 2005-04-29 2008-02-14 Carnevali Jeffrey D Telescoping pole mount
US20080078734A1 (en) * 2004-07-01 2008-04-03 Kuk-Won Yoon Apparatus for Regulating Height of Music Rack
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US20080217910A1 (en) * 2007-03-09 2008-09-11 Hill-Rom Services, Inc. Trasferable patient care equipment support
US20090050756A1 (en) * 2007-08-21 2009-02-26 Hill-Rom Services, Inc. Transferable patient care equipment support
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US7865983B2 (en) 2007-04-26 2011-01-11 Hill-Rom Services, Inc. Patient care equipment support transfer system
US20110243647A1 (en) * 2006-12-05 2011-10-06 Dae Up Sohn Connector for stick
US8479932B2 (en) * 2011-05-09 2013-07-09 Interdesign, Inc. Tension rod
US20140263123A1 (en) * 2013-03-13 2014-09-18 House of Atlas, LLC Adjustable Tension Rod
US20150320159A1 (en) * 2012-07-19 2015-11-12 Lekisport Ag Length-adjustable tube, in particular for sticks
US20160206126A1 (en) * 2013-03-13 2016-07-21 House of Atlas, LLC Adjustable Tension Rod
US20190145447A1 (en) * 2017-11-16 2019-05-16 Liberty Hardware Mfg. Corp. Locking telescoping rod
USD899895S1 (en) 2018-02-23 2020-10-27 House of Atlas, LLC Surface mount
US10959559B2 (en) 2019-03-08 2021-03-30 House of Atlas, LLC Dual-mounted end cap system and locking system for an adjustable rod
US10995786B2 (en) * 2018-08-21 2021-05-04 Kaveh Didehvar Tension rod mechanism
US11215217B2 (en) 2018-02-23 2022-01-04 House of Atlas, LLC Surface mount
US11382447B2 (en) 2019-07-30 2022-07-12 House of Atlas, LLC Adjustable rod features
US20230180957A1 (en) * 2021-12-14 2023-06-15 Dongguan Shenghong Household Items Co., Ltd Internal Locking Retractable Shower Curtain Rod and Connector
USD1005084S1 (en) 2020-01-21 2023-11-21 Olson Ip Technologies, Inc. Suction cup mount
US11825940B2 (en) 2020-05-18 2023-11-28 House of Atlas, LLC Customizable shower caddy
US11889958B2 (en) 2019-04-17 2024-02-06 House of Atlas, LLC Rotating shower rod

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US3695700A (en) * 1969-04-12 1972-10-03 Daimler Benz Ag Headrest, especially for seats in motor vehicles
US3604734A (en) * 1969-05-13 1971-09-14 Re Ly On Metal Products Inc Adjusting and locking mechanism for adjustable and collapsible table
US3711054A (en) * 1969-06-19 1973-01-16 F Bauer Continuously adjustable lifting devices
US3722903A (en) * 1970-10-26 1973-03-27 J Jones Adjustable ski pole with split retainer ring
US4294560A (en) * 1980-03-12 1981-10-13 Larkin Miles K Locking means
US4453689A (en) * 1981-07-10 1984-06-12 Northern Telecom Limited Adjustable mounting
US4856929A (en) * 1987-10-21 1989-08-15 Steccone Products Co. Interior clamping device for tubular poles
US5400995A (en) * 1992-04-15 1995-03-28 Hill-Rom Company, Inc. IV pole with interior drag brake
US5898961A (en) * 1995-06-07 1999-05-04 Hill-Rom, Inc. Mobile support unit and attachment mechanism for patient transport device
US6073285A (en) * 1995-06-07 2000-06-13 Ambach; Douglas C. Mobile support unit and attachment mechanism for patient transport device
US5944290A (en) * 1996-07-17 1999-08-31 Stabilus Gmbh Rotationally secured column
US5881980A (en) * 1997-06-27 1999-03-16 Knudson; Edward C. Leg assembly
US6027087A (en) * 1998-05-07 2000-02-22 Stoney Point Products, Inc. Releasably retaining telescoping tubing segments
EP1099862A2 (en) 1999-11-11 2001-05-16 alfer-aluminium Gesellschaft mbH Assembly of pipes and threaded rods
DE19954303A1 (en) * 1999-11-11 2001-05-17 Alfer Aluminium Gmbh Profile system
US6575655B1 (en) 1999-11-11 2003-06-10 Alfer Aluminum Gesellschaft Mbh Profile system
EP1099862B2 (en) 1999-11-11 2010-07-28 alfer-aluminium Gesellschaft mbH Assembly of pipes and threaded rods
US6834840B1 (en) 2000-08-01 2004-12-28 Hill-Rom Services, Inc. Medical device support assembly
US7735266B2 (en) 2001-05-25 2010-06-15 Hill-Rom Services, Inc. Architectural system having transferrable life support cart
US6704956B2 (en) 2001-08-23 2004-03-16 Hill-Rom Services, Inc. Hospital bed equipment support apparatus
US7008269B2 (en) 2001-08-23 2006-03-07 Hill-Rom Services, Inc. Hospital bed equipment support apparatus
US20040157496A1 (en) * 2001-08-23 2004-08-12 Hill-Rom Services, Inc. Hospital bed equipment support apparatus
US20060207026A1 (en) * 2003-03-18 2006-09-21 Hill-Rom Services, Inc. Patient care equipment management system
US7735788B2 (en) 2003-03-18 2010-06-15 Hill-Rom Services, Inc. Patient care equipment management system
US7065812B2 (en) 2003-03-18 2006-06-27 Hill-Rom Services, Inc. Patient care equipment management system
US7216382B2 (en) 2003-03-18 2007-05-15 Hill-Rom Services, Inc. Patient care equipment management system
US20070187559A1 (en) * 2003-03-18 2007-08-16 Newkirk David C Patient care equipment management system
US20050000019A1 (en) * 2003-03-18 2005-01-06 Newkirk David C. Patient care equipment management system
US20060242763A1 (en) * 2003-10-13 2006-11-02 Graham Mark A Transferable patient care equipment support
US7676865B2 (en) 2003-10-13 2010-03-16 Hill-Rom Services, Inc. Transferable patient care equipment support
US7552900B2 (en) * 2004-07-01 2009-06-30 Kuk-Won Yoon Apparatus for regulating height of music rack
US20080078734A1 (en) * 2004-07-01 2008-04-03 Kuk-Won Yoon Apparatus for Regulating Height of Music Rack
US20060078368A1 (en) * 2004-10-13 2006-04-13 Chi-Chung Wang Telescopic tube assembly for a clothes rack
US20060179571A1 (en) * 2005-02-11 2006-08-17 Hill-Rom Services, Inc. Transferable patient care equipment support
US7884735B2 (en) 2005-02-11 2011-02-08 Hill-Rom Services, Inc. Transferable patient care equipment support
US8258973B2 (en) 2005-02-11 2012-09-04 Hill-Rom Services, Inc. Transferable patient care equipment support
US7594633B2 (en) * 2005-04-29 2009-09-29 Carnevali Jeffrey D Telescoping pole mount
US20060255215A1 (en) * 2005-04-29 2006-11-16 Carnevali Jeffrey D Telescoping pole mount
US8550013B2 (en) 2005-04-29 2013-10-08 Jeffrey D. Carnevali Locking electronics platform
US7802768B2 (en) 2005-04-29 2010-09-28 Carnevali Jeffrey D Telescoping pole mount
US20080035805A1 (en) * 2005-04-29 2008-02-14 Carnevali Jeffrey D Telescoping pole mount
US7398952B2 (en) * 2005-04-29 2008-07-15 Carnevali Jeffrey D Telescoping pole mount
US20080093514A1 (en) * 2005-04-29 2008-04-24 Carnevali Jeffrey D Locking electronics platform
US7523911B2 (en) 2005-05-02 2009-04-28 Carnevali Jeffrey D Telescoping pole mount
US7874945B2 (en) * 2005-11-21 2011-01-25 Lucas Michael E Head retaining mechanism for a lacrosse stick
US20100236049A1 (en) * 2005-11-21 2010-09-23 Lucas Michael E Head Retaining Mechanism for a Lacrosse Stick
US20070117661A1 (en) * 2005-11-21 2007-05-24 Lucas Michael E Head Retaining Mechanism for a Lacrosse Stick
US7753812B2 (en) * 2005-11-21 2010-07-13 Lucas Michael E Head retaining mechanism for a lacrosse stick
US20110243647A1 (en) * 2006-12-05 2011-10-06 Dae Up Sohn Connector for stick
US20130045041A1 (en) * 2006-12-05 2013-02-21 Dae Up Sohn Connector for stick
US8215863B2 (en) * 2006-12-05 2012-07-10 Dae Up Sohn Connector for stick
US20120076571A1 (en) * 2006-12-05 2012-03-29 Dae Up Sohn Connector for stick
US20080217910A1 (en) * 2007-03-09 2008-09-11 Hill-Rom Services, Inc. Trasferable patient care equipment support
US8104729B2 (en) 2007-03-09 2012-01-31 Hill-Rom Services, Inc. Transferable patient care equipment support
US7865983B2 (en) 2007-04-26 2011-01-11 Hill-Rom Services, Inc. Patient care equipment support transfer system
US8056162B2 (en) 2007-04-26 2011-11-15 Hill-Rom Services, Inc. Patient support apparatus with motorized traction control
US7798456B2 (en) 2007-08-21 2010-09-21 Hill-Rom Services, Inc. Transferable patient care equipment support
US20110006180A1 (en) * 2007-08-21 2011-01-13 Newkirk David C Transferable Patient Care Equipment Support
US20090050756A1 (en) * 2007-08-21 2009-02-26 Hill-Rom Services, Inc. Transferable patient care equipment support
US8047484B2 (en) 2007-08-21 2011-11-01 Hill-Rom Services, Inc. Transferable patient care equipment support
US7748672B2 (en) 2007-09-07 2010-07-06 Hill-Rom Services, Inc. Transferable patient care equipment support
US20090065668A1 (en) * 2007-09-07 2009-03-12 Walke James L Transferable patient care equipment support
US8479932B2 (en) * 2011-05-09 2013-07-09 Interdesign, Inc. Tension rod
US20150320159A1 (en) * 2012-07-19 2015-11-12 Lekisport Ag Length-adjustable tube, in particular for sticks
US9480314B2 (en) * 2012-07-19 2016-11-01 Lekisport Ag Length-adjustable tube, in particular for sticks
US20140263123A1 (en) * 2013-03-13 2014-09-18 House of Atlas, LLC Adjustable Tension Rod
US20160206126A1 (en) * 2013-03-13 2016-07-21 House of Atlas, LLC Adjustable Tension Rod
US11454267B2 (en) 2017-11-16 2022-09-27 Liberty Hardware Mfg. Corp. Locking telescoping rod
US10844890B2 (en) * 2017-11-16 2020-11-24 Liberty Hardware Mfg. Corp. Locking telescoping rod
US20190145447A1 (en) * 2017-11-16 2019-05-16 Liberty Hardware Mfg. Corp. Locking telescoping rod
USD961360S1 (en) 2018-02-23 2022-08-23 House of Atlas, LLC Surface mount
USD899895S1 (en) 2018-02-23 2020-10-27 House of Atlas, LLC Surface mount
US11215217B2 (en) 2018-02-23 2022-01-04 House of Atlas, LLC Surface mount
US10995786B2 (en) * 2018-08-21 2021-05-04 Kaveh Didehvar Tension rod mechanism
US10959559B2 (en) 2019-03-08 2021-03-30 House of Atlas, LLC Dual-mounted end cap system and locking system for an adjustable rod
US11571080B2 (en) 2019-03-08 2023-02-07 House of Atlas, LLC Dual-mounted end cap system and locking system for an adjustable rod
US11889958B2 (en) 2019-04-17 2024-02-06 House of Atlas, LLC Rotating shower rod
US11382447B2 (en) 2019-07-30 2022-07-12 House of Atlas, LLC Adjustable rod features
USD1005084S1 (en) 2020-01-21 2023-11-21 Olson Ip Technologies, Inc. Suction cup mount
US11825940B2 (en) 2020-05-18 2023-11-28 House of Atlas, LLC Customizable shower caddy
US20230180957A1 (en) * 2021-12-14 2023-06-15 Dongguan Shenghong Household Items Co., Ltd Internal Locking Retractable Shower Curtain Rod and Connector

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