US2474698A - Loose-leaf post binder - Google Patents

Description

June 28, 19494. s, SEGAL 2,474,698

LOOSE-'LEAF PosT BINDER' Filed Aug. 7, 1944 42 Sheets-Sheet 1 Eng l l vEN'roR l51am/Ez. SEG/u.

ATTORNEY dJune 28, 1949. I s, SEGAL. 2,474,698

LOOSE-LEAF POST BINDER Filed Aug. 7, 1944 l 2 Sheets-Sheet 2 35 'f4 54 5E INVENTOR SAMUEL SEGAL ATTORNEY Patented June 28, 1949 UNITED STATES PATENT vSamuelSegal, New York, N..Y.., assignor Wil? `son-Jones yCo., Chicago, Ill., `a corporation of Massachusetts Application August 7, 194i, serial No. 548.431 sacarme. (c1. 12e-s1) The subject matter of this invention is a loose leaf binder of the type wherein arstack of papers are guided onlsectional posts and removably interposed between 'a postsupport anda clamping follower. Specifically the invention vdeals with improved detachable `sectional posts for loose leaf binders for `'extending or reducing the stack capacity between the post support andclam'ping follower. Where sectional :posts are utilized in loose lea'f binders, the base `section thereof is generally spun 'on 'and ixedly secured to the lower wall `of the `post supporting Jiiattened tube. In many instances during use the base section of a sectional post becomes loose and undesira bly rotates, consequently causing the whole sec tional post assembly to bodily 'turn with it. Also in practice it is diiiicult to repair the ybaseV `section in that it is 'not removably connected to its suppotingtube. Oneoftheobj'ects of 'the prese ent invention is to eliminate these disadvantages in the `provision of spaced paper A"guiding sectional posts having bas'e sections removably but non-rotatably interlocked lfvvitli `the llower wall `of the `post supporting r'attene'd tube and sustained against involuntary `tilting fby the Iupper wall of the supporting flattened ltu'be, and associated with movable means `displalce'altlle relative to fthe base section and cooperating with tlie'npperwall of the supporting flattened tube to :preclude longitudinal displacement of vthe ibase section. A further object of the invention is realized lin permitting `the sectional posts to be quickly and readily assembled and desirably secured to 'the supporting flattened tube. A :further and in1= portant object is concerned with the provision of means to prevent the basesection of the sectional posts from turning or becoming loose. Another object is realized in the provision of a slotted post base section and superimposed dee tachably associated slotted intervening and tope most post sections for cooperating with novel wrench means adapted to bodily receive these sections and removably interlock selectively with the longitudinally arranged `slots of these seca tions for coupling orv unfaste'ning rthe latter selectively.

In the drawings:

Fig. 1 is a fragmentary view of the loose leaf .binder showing one embodiment of the sectional posts according to my invention.

Fig. 2 is a vertical `sectional view `on the line 2-2 of Fig. 31, however, illustrating the clamp-4 ing follower in dash and dot lines.

Fig. 2e is a fragmentary view of `Fig.` 2 part-icularlyifiliustrating `the rotatalvlel slee'v'e associated 2 with lthe base `sectiorrof ya :post removably locked t'o the Cpost supporting tube.

Fig. -Zbi's a detailed view'of Fig. 2a.

fFig. 3 Vis la `fragmentary perspective and exploded view of Fig. 1; p

fFig. `4 is `a sectional view on the line 4-4 `of Fig; 2.

Fig. 5 is a plan viewof a wrench according to the invention.`

Fig. 5'a ris a perspective view of a lower :sectional post.

Fig. 6 isa View similar to Fig. `2, depicting a slightly Lmodied sectional post. y l

rFi'g. `'l is an exploded perspective view of Fi'g. '6. K

fFig. 8 is a view similar to Fig. 'l illustrating a sectional post according to Fig. 2;

lFig. `9 is -a sectional 4view on the line 9--9 of Fig. 10.

Fig. 10 is asectional View on the line lll- I0 of Fig. `9.

Fig. 11 is an 'exploded perspective View 0f a Sectional post utilizing the pin `anchoring means illustrated in Figs. 49 and 10;

iFig. '12 is a view similar `to Fig. l1 showing a sectional post of the type illustrated in Fig. 2.

Fig. 13 isa `broken elevational view of a sectional ;-post, partly 'in section of the type illus-v trated in Fig; lfl Ahowever removably anchored to `the lower hollow supporting bar by a slidable insert.

Fig. 14 ris `a `longitudinal sectional `View on the line Ill-I4 of Fig. 13.

Fig. 15 is a vertical sectional `view Aon the line lia-MI5 -of Fig. 14.

Fig. 16 ris aperspective and'exploded view or" Fig. 13,I and Fig. 17 is a view similar to Fig. 16 however illustrating another `i'orm of a slidablel locking nSIltr;

Illustra-tive of the embodiments disclosed, the loose leaf :binder is generally denoted B and comprises a pair of spaced covers C swingably attached `to upper zalt-id vlower spaced tubular :bars

or headers F and S respectively. For purposes of lspecicatiom tubular bar S `may Ibe'cons'ider'ed as 'a support `for the pair of spaced sectional posts `P on which the 'stack fof papers 'PP are removably mounted! 'The bar F is a compressor or follower for desirably and closely holding the stack of` papers' against the 'lower supporting "b ar S as is welfllunclerstood in theartl According to tlf'iel embodiment illustrated in tom irait wall"- provided-With a pa'ir rof spaced ir cular openings as II, each interrupted by a bridge or key I2 to define spaced openings or key receiving means and has its upper flat wall III provided with a pair of spaced circular openings I5 registering with the lower circular openings II, and each opening I5 merges with a notch or keyway I8 for purposes hereinafter setl forth.

Alined or registering openings II and I5, position or locate the lower or base sections I'I of the sectional posts P relative to lower bar S. To this end, each of the lower sections I'I is provided with a cylindrical head I8 characterizing spaced keys removably and closely tting into and positioned by the wall of opening I5 and having the diametrically disposed slot I9 or keyway for closely and removably receiving the bridge or key I2, the latter serving as stop means to limit the insertion of the lower base sections I'I into the supporting flattened tube S.

For anchoring the lower sections I1 to the supporting tube or bar S, clamping means in the form of split sleeves 20 are utilized. Each of these sleeves is split lengthwise to provide a keyway or slot 2l. These sleeves closely and rotatably but frictionally and resiliently surround the cylindrical body of the lower sections I'I and each sleeve 28 is characterized by an outwardly extending wing portion or key 22.

Each of the lower post sections I'I may be considered as bearing means for the concentrically arranged rotatable sleeves 28 and when these parts are assembled, wing portions 22 may be conveniently received in notches as I6 for facilitating reception of the slotted head I8 on the cooperating bridges I2. However the Walls of openings I5 characterize means closely and removably encompassing the sleeves 2|] while heads I8 serve to limit displacement of sleeves on the lower sectional posts il.

By utilizing either end of the wrench W shown in Fig. 5, the anchoring sleeves 20 may be selectively rotated relative to the supporting bar S and its bearings or lower base sectional posts II and the key or wing 22 which is under the top wall III of the lower supporting bar is rotated to clear or be out of alinement with notch I6 and inasmuch as its length closely approximates the distance between the lowerand upper flat walls II) and I4, the lower or post base sections l1 are removably locked and retained against longitudinal displacement by reason of the cam faces 22 frictionally engaging the inner surface of the upper wall III.

Specifically the wrench W embodies a hooked Vend 23 and a perforated end 24 having its circular opening 25 interrupted by a lug or key 26. As previously stated, either end of wrench W may be employed to rotate a locking sleeve 20 of a base section Il. If this hooked end 23 be positioned in keyway 2i or if the perforated end 24 be shifted over `the resilient sleeve to position key 26 into the walls of its slot or gap as 2I the sleeve upon actuation of the wrench may be rotated to a locking relation if unlocked or to` an unlocked relation if locked as is well understood.

In Fig. 1 each sectional post is shown as having three sections, to wit, I'I, 21 and 28. rOf course as the stack of papers becomes larger intervening sections as 2l may be provided. And where the stack is reduced these intervening sections may be eliminated. It should be understood, however, that each of the intervening post sections as 21 and its topmost sections 28 each include an elongated slot or keyway 29 running lengthwise thereof to coact with either endl of wrench W for detaching from or attaching the post sections to each other. For this purpose in the form according to Figs. l and 2 the upper portions of the lower and intervening post sections I'I and 2'I each embody threaded stems 38 (also illustrated in Fig. 8) removably connected to the threaded recess 3i in the lower portions of the intervening and topmost post sections 2'I and 28.

In all of the embodiments disclosed, the lower base sections of the several sectional posts are removably locked relative to the lower supporting bar S, and thus may be if desired readily and quickly replaced by other similar base sections. Moreover eachV of the base sections I'I is provided with non-circular means removably interlocked with the lower wall of the bar S and consequently is prevented against turning. Furthermore the topmost and intervening sections are not only removably mounted but the keyways as 2S provide means for facilitating assembly .of these parts in that the wrench may be quickly fitted over one of the post sections to removably interlock key 26 in keyway 29 .instead of fumbling needlessly in the attempt to thread the hooked end or crank 23 of the wrench into a conven:

tional perforation (not shown) on the post sections although by the present invention the hooked end 23 may be still employed in connec-v tion with actuating or rotatingthe slotted sections of the sectional posts herein described.

Where the sleeve 20 has been rotated to permitV the cam portion 22 to frictionally lock with the.

lower bar S (Fig. 4), base section I'I is held against longitudinal displacement by wing` 22 abutting the inside faces of the lower and upper Iwalls IIJ and I4, is held against rotational dis placement by the spaced keys defined by the slotted head I8 cooperating withbridge I2, andhad to the intervening sectionsV 2'! for unthreading the latter although access to the entire sectional post P may be had by simply removing the upper cover C and thereafter each sectional post P may be removed as a unit if desired by utilizing the wrench W and rotating its respective sleeve 20 until its cammed wing 22 registers with its cooperating slot I6 and subsequently the sectional post may be removed as a unit from bar S. It is apparent therefore, that not only may each of the sections of the sectional post be readily dismantled but each sectional post may be removed bodily from the supporting bar S.

In the form according to Figs. 6 and 7, the lower or base'sections I'I are each provided with a non-circular key or lug 35 removably and closely positioned in a correspondingly shaped opening or key receiving means 35 in the bottom flat wall I0 of the hollow supporting bar S for removably locking base section Il against rotation. Lug or key 35 depends from head or flange 3'! removably seated against the flat wall Il) while sleeve 20 is seated on' the annular stop flange 31. In other 'aspects the embodiment illustrated in Figs. 6 and 7 is along the lines of form shown in Figs. 1-3 exceptthat the base section I1 and intermediate section 21 each include a threaded recess 38 for removably receiving the depending threaded stems 39 of the intervening 'and topmost sections 2'I 'and 28.

.In connection with the form illustratedv in annees 8,`rthe1iconstruction is along `the lines Aof the embodiment disclosed in Figs. `6 fand- '7 except thefstemsiSill of the base and intervening sections will' 1and T21 `cooperate with the threaded sockets lor `recesses 3i in the intervening and topmost sections 21 and 128 as in the case oi the form shown in Figs. 1-3 inclusive. l

@gaming `now `to the form illustratedin Figs.` 9mm :wherein the base` `section ll is removably` sustained by the expanded intermediate `por-- tions `.idll of the slidablyA guided looped spring yor pini rdisengageably interlocking with the Walls ofsigroove 143. It `will be noted that the reduced portions!!! :is` resiliently and removably straddled by che .arms `of the pin or loop il and the arms ofltheiloop 1.cooperate with `wall lli to holdfbase section:` i1 against longitudinal displacement, that isyiagainst. zwithdrawal from the bar S. After sectionfil `is positioned `in the tube S; it is also locked by the hair pin slizaped loop as previously stateglxand to `remove the pin the` crank portion 2319i rthe` Wrench :may be utilized to act against the Closed `end d'5 :of the `looped pin as indicated imFig. 11.0. In other aspects, the form shown in Figs. 9-.ll is along the lines` of the form illustrated in Figs. 6 and 7.

."il'helembodiment `illustrated in Fig. 12 conforms to .the .species shown in Fig. l1 exceptthat thi@ base and `intervening sections are provided with `threaded.stems for removably threading into :threaded sockets in the lower portions of the intervening and topmost sections. i

`In Figs. 13-16, the form illustrated is along thalineSfofthe embodiment according to Fig. 11 except that the locking pin has been replaced bya slidable spring plunger or insert 50 having a tail `,portion 5d' provided with thekey shaped slot 5I and embodying the dependent curved wings .512 `merging with the closure head 53 terminating in a lower wall 5i receivable in the brof 'the iiattened tube S.

In the matter of assembly, spring insert 50 is rstitelesooped partly within the tube S so that theiexpandedportion 53 of opening 5I registers withwthealined openings 3d and Iii of tube S. Hence base section `il may be inserted into and through .openings l5 and dit to position key or lug 35 `into the key receiving means or opening 35, .Thereafter insert 5t is pushed further in- Wax-idly `causing the rectilinear sides till of the restricted. slot il `of the opening 5i to enter groove `43 and removably straddle the reduced portion 444 of section il. whereby the insert `is removably interlocked with base section l'l and cooperates with the `wall i4 to prevent longitudinal displacement of this base section, the closure or plug head 53' of the spring or insert 5 0 having 4shoulders 56 to limit the inward displacement of` the` insert `while its arcuate wing portions 52 and the lower portion 5i resiliently or frictionally engage the walls of the bore of tube S. To remove the base section il', head 53 `s.grasped and pulled outwardly, hence un locking base `section il by` positioning opening uabout the body of section lil" and the latter may be linearly removed from the tube S. `In other.aspects,`the form according to Figs. 14-16 isiaong `the `lines of the embodiment illustrated.`

in fEig. 11.

.According to the form illustrated in Fig. 17, base section I'l is iirst positioned in the alined openings Al5 and (it. Thereafter' split spring body @6 0 of the locking closure plug or insert` gonerally fdenoted 61 may be inserted into the bmzf "llbe: Wherebythe spaced ,prongs t2 are received in Athe groove 43 and :straddle fthe reduced portion 44 of 'basesection lil .after'which the sides of the `elongated openingrGB Senterzgroove 43 and interlock with the `sides of the reduced portion or neck M. The tail `portion .6'4 embodying the prongs 62 is a fhollow member having its top wall 65 and its depending arcuate vwings as 66 frictionally and removably cooperating with the :walls of the tube NS and `although Iits upper Wall :65 `bears against the upper wall gill to @prevent longitudinal `displacement foi the :base .seotion I1, the head 61 is hollow and .of the type illustrated in Fig. 16 and includes stop shoulder F38 to limit the insertion of the plug into the bore of tube S. To remove ythe `base section i121, head 6l is grasped and shifted outwardly, 'thus freeing or unlocking section i1 and the 'latter may be slidably withdrawn from the tube. Otherwise the form illustrated in Fig. l'l is `along the lines shown in Fig. 16.

By the several arrangements 'disclosed the base `sections arenot only removably interlocked against rotation but are further removably held against accidental longitudinal displacement and against withdrawal from the supporting 'tube S although sustained against tilting :by the closely confining wall of the bore or .opening i5.

Various changes may be made inthe details for construction and arrangement of parts Without departing from the spirit .of the invention or sacricing any of :the advantages thereof inherent therein.

I claim:

1. In a `loose `leaf binder, a post, :a tubular member having a llovver iiattened `wall including key receiving means and having .an upper `flattened wall including an opening registering with said key receiving means, said post adapted to be received into said tubular `member through said opening `and having terminal key means removably` and :non-rotatably interlocked with said key receiving means, and locking means movably carried by said post and `cooperating with saidupper Wall `to preclude withdrawal of said post from said `tubular member.

2. In a `loose leaf binder, a cylindrical post characterizing a base section, a tubular member having a lower flattened wall including non-circular key receiving means `and `having an upper flattened Wall including a circular openingregistering with said key receiving means, sai'dpost adapted to be removably receivedinto said tubular member through said opening and having noncircular key terminal means removably and non rotatably interlocked with said key receiving means, and locking means movably carried by said base section and cooperating with said `upper wall to `preclude withdrawal of said `post from said `tubular member.

3. In a loose `leaf binder, a post, a tubular member having a lower flattened wall including key receiving means and having an upper iiattened wall including an opening registering with said key receiving means, said post adapted fto be received `into Said tubular member through said opening and having terminal -key means `removably andnon-rotatably interlocked with sai-d key receiving means, and locking means rotatably carriediby said post and having wing means removably interposed between said upper and lower Walls to preclude withdrawal of said post from,

ceiving means and having an upper ilattened wall including a circular opening registering with said key receiving means, said post adapted in part to be received into said tubular member through said opening and having depending and at least in part non-circular key means removably and non-rotatably interlocked with said key receiving means, and a sleeve closely and rotatably surrounding said post and having a wing interposed between said upper and lower walls and frictionally cooperating with said upper wall to preclude withdrawal of said post from said tubular member.

5. In a loose leaf binder, a post, a tubular member having a lower flattened wall including key receiving means and having an upper flattened wall including an opening registering with said key receiving means and including a notch merging with said opening, said posiI adapted to be received into said tubular member through said opening and having depending key means removably and non-rotatably interlocked with said key receiving means, and a sleeve closely and rotatably surrounding said post and closely and removably receivable in said opening and having a wing portion removably receivable in said notch and removably receivable between said lower and upper walls and cooperating with said upper wall to preclude withdrawal of said post from said tubular member.

6. In a loose leaf binder, a threaded post, a tubular member having a lower flattened wall including key receiving means and having an upper attened wall including an opening registering with said key receiving means and including a notch merging with said opening, said post adapted to be removably received into said tubular member through said opening and having depending key means removably and nonrotatably interlocked with said key receiving means, a sleeve longer than the height of said member and closely and rotatably surrounding said post and in part closely and removably receivable in said opening and having a wing portion removably receivable in said notch and removably receivable between said lower and upper walls and cooperating with said upper wall to preclude withdrawal of said post from said tubular member, and said sleeve having an accessible slot.

7. In combination, a tubular member having a lower flattened wall including in part noncircular key receiving means and having an upper flattened wall including a circular opening registering with said key receiving means and including a notch merging with said opening, a circular threaded post adapted to be removably received into said tubular member through said opening and having depending key means removably and non-rotatably interlocked with said key receiving means, and a longitudinally split annular sleeve longer than the height of said memsaid member and adapted to be closely and re-'" movably received into said tubular member` through said opening and having terminal key means removably and non-rotatably interlocked with said key receiving means and having an intermediately arranged reduced portion, and locking means closely and removably straddling said reduced portion and cooperating with said upper wall to preclude withdrawal of said post from said tubular member.

9. In combination, a tubular member havingr a lower flattened wall including key receiving means and having an upper flattened wall including an opening registering with said key receiving means, a threaded post longer than the height of said member and adapted to be closely and removably received into said tubular member through said opening and having terminal key means removably and non-rotatably interlocked with said key receiving means and having a re' duced part defining a groove with the body of said post, and spring locking means receivable in said groove and removably straddling said reduced part and cooperating with said upper wall to preclude Withdrawal of said post from saidA tubular member.

10. In combination, a tubular member having a lower flattened wall including key receiving means and having an upper ilattened wall includ-I ing an opening registering with said key receiving means, a threaded post' longer than the height of said member and adapted to be closely and removably received into said tubular member through said opening and having terminal key means removably and non-rotatably interlocked with said key receiving means and having a reduced part defining a groove with the body of said post, and a looped spring removably receiv-` able in said groove and resiliently straddling said reduced part and cooperating with said upper' wall to preclude withdrawal of said post from said tubular member.

11. In combination, a tubular member havingl a lower attened wall including key receivingI means and having an upper ilattened Wall including an opening registering with said key receiving means, a threaded post longer than the height of said member and adapted to be closely and removably received into said tubular member through said opening and having terminal key means removably and non-rotatably interlocked with said key receiving means and having a reduced part dening a groove with the body of said post, and a slidably guided spring removably receivable in the bore of said tubular member and having an opening for receiving said post` and having a slotted portion removably receiv able in said groove to straddle said reduced part and cooperating with said upper wall to preclude the withdrawal of said post from said tubular memb er` 12. In combination, a tubular member havingy a lower flattened wall including key receiving means and having an upper flattened wall includ ing an opening registering with said key receiving' ber and having an opening for removably recev-- egresos sani pest and having a siones portion removaiblyreceivable saidgroove to straddle saiclre- `duced.part', and cooperating with said upper Wall to preclude theswithdrawal'iof said postfrom said tubular member, said spring having a head char- I acterizing closure means for one end of said bore.

135111 combination; a tubular member having ai` lwer flattened wall including key receiving means andliaving an upper flattened walllincludinganopening registering with said key receiving meansgiia threaded post longer than the height ofi-said member and` adapted to be closely and removably received into 'said tubular member through said opening and having terminal key means removably and non-rotatably interlocked withkey receiving means and having a reduced part dening a groove with the body of post; and aslidably guided spring removably receivable in the bore of said tubular member lng anppening registering with said` key receiving means, a threaded post longerthan the height of said member and adapted to be closely and removably received into said tubular member through said opening and having terminal key meansi removably and non-rotatably interlocked Wit'hsaid key receiving means and having a reduced part defining a groove with the body of saidl post, and a slidably guided' spring removably receivable ini the bore of saidtubular member and having spaced resilient prongs for removably recen/ing said post and having a slotted portion renicvably` receivable in` said groove to removably' and yieldin'gly straddle said reduced part and cooperating with said upper wall to preclude the Withdrawal of said post from said tubular member.

135i.v Incombination, atubular member having a lbwer flattened wall including key receiving meanslandihavingan upper flattened wall includiilg4 an openingregisteringl with said key receiving means5 a threaded post longer than thel height of said member andiadapted-to'be closely and re" movably received into said tubular member through. said opening and having terminal key means' removably and non-rotatably interlocked with said key receiving means and having a reduced part defining a, groove with the body of said post, and a `slidably guided spring removably receivable in the bore of said tubular member and having spaced prongs for removably receiving said post and having a slotted portion removably receivable in said groove to straddle and removably interlock with said reduced part and cooperating with said upper wall to preclude the withdrawal of said post from said tubular member, said spring having a head serving as closure means for one end of said bore.

16. In combination, a tubular member having a, lower iiattened wall including at least in part non-circular terminal receiving means and having an upper flattened wall including a .cylindrical opening in vertical alinement with said key re- ITO ceiving meansj and including a notch in communicationl with saidY opening, a threaded and cylinrlrical post adapted to be removably received in saidy tubular member through said opening and having at: leastin part non-circular terminal meanslr'emovably interlocking with said terminal receiving:means,` and a sleeve longer than the height ofs'aid' member and closely and rotatably surrounding said post and in part closely and removably receivable in said lopening and extending alc-ove said upperflattened' wall and having a wing portion removably receivable in said notch andremovably receivable between said upper and lower Walls and' having means cooperating with saidupper wall to preclude withdrawal of said post fromfsaidtubular member.

1'?.` In combination,` a tubular member having a lower attened wall including at least in part non-circular terminal receiving means and having an upperflattened wall including a cylindrical opening in' vertical alinement with said key receivin'glmeans and including a notch in communication with said opening, a threaded and cylindrical post adapted to be removably received in said tubular member through said opening and having at least' in part non-circular terminal means removably interlocking with said terminal receiving means; anda longitudinally split annular sleeve longer than the height of said member andl closely and rotatably surrounding said post and in part closely and removably receivable in saidl opening and extending above said upper flattened wall andhaving a Wing portion removably receivable in said notch and removably receivable between said? upper and lower walls and having means" frictionally cooperating with said upper wall to-preclude'withdrawal of said post from said tubular member.

` lf8. In' combination, a tubular member having a lower atftened wall including at least in part non-circular key receiving means and having an upperattened" wall including a cylindrical opening inV vertical alinement with said key receiving means" and including a notch in communication with saidi opening, al threaded and cylindrical `post adaptedA to be removably received in said tubular member through said opening and having at least inpart non-circular terminal key means removably interlocking with said key receiving means, and a` longitudinally split" annular sleeve longer than the height of said member and closely and rotatably surrounding said post and in part closely and removably receivable in said opening ancl'l extending above said upper flattened wall and having a= wing portion removably receivable in said notch and removably receivable between said upper and lower walls and having means 'coooperating with said upper wall to preclude witli'drawai of said `post from said tubular member.

19. In combination, a tubular member having a lower flattened wall including at least in part non-circular key receiving means and having an upper flattened wall including a cylindrical opening in vertical alinement with said key receiving means and including a notch in communication with said opening, a threaded and cylindrical post adapted to be removably received in said tubular member through said opening having an 'annular flange and having at least in part non-circular terminal key means removably interlocked with said key receiving means, and a longitudinally split `annular sleeve seated on said flange and longer than the height of said member and closely and rotatably surrounding said post and in part closely and removably receivable in said opening and extending above said upper attened Wall and having a wing,r portion removably receivable in said notch and removably receivable between said upper and lower Walls and having means cooperating with said upper wall to preclude withdrawal of said post from said tubular member.

20. In combination, a tubular member having a lower flattened wall including at least in part non-circular and spaced key receiving means and having an upper flattened wall including a cylindrical opening in vertical alinement with said keyreceiving means and including a notch in communication with said opening, a threaded and cylindrical post adapted to be removably received in said tubular member` through said opening and having spaced keys removably interlocked with said spaced key receiving means, and a longitudinally split annular sleeve longer than the height of said member and closely and rotatably surrounding said post and in part closely and removably receivable in said opening and extending above said upper flattened wall and having a wing portion removably receivable in said notch and removably receivable between said upper and lower walls and having means cooperating with said upper wall to preclude withdrawal of said post from said tubular member.

21. In combination, a tubular member having a lower flattened wall including key receiving means and having an upper attened wall including an opening in alinement with said key receiving means, a threaded post longer than the height of said member and adapted to be closely and removably received into said tubular member through said opening and having terminal key means removably and non-rotatably interlocked With said key receiving means and having a reduced part defining a groove with the body of said post, and a hair pin spring having spaced arms in part removably receivable in said groove and having outwardly convex and inwardly concaved portions resiliently straddling said reduced part and cooperating with said upper wall to preclude withdrawal of said post from said tubular member.

22. In combination, a tubular member having a lower flattened wall including key receiving means and having an upper flattened wall including an opening registering with said key receiving means, a threaded post longer than the height of said member and adapted to be closely and removably received into said tubular member through said opening and having terminal key means removably and non-rotatably interlocked with said key receiving means and having a reduced part dening a groove with the Abody of said post, anda spring removably receivable in said tubular member and having spaced means iitting into said groove to closely and removably straddle said reduced portion and cooperating with said upper wall to preclude removal of said post from said tubular member.

23. In combination, a tubular member having a lower attened wall including key receiving means and having an upper flattened wall including an opening registering with said key receiving means, a threaded post longer than the height of said member and adapted to be closely and removably received into said tubular member through said opening and having terminal key means removably and non-rotatably interlocked with said key receiving -means and having a reduced part defining a groove with the body of said post, and a slidably guided spring removably receivable in said tubular member and having spaced prongs deiining a slot and including free tapered terminals adapted to be led into said groove prior to reception by the latter of the spaced sides of said slot and having an intermediate portion including an opening communicating with said slot and embodying spaced sides closely and removably straddling said reduced part, and said intermediate portion constituting means cooperating with said upper wall to preclude withdrawal of said post from said tubular member.

SAMUEL SEGAL.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS v Number Name- Date 713,289 Dade Nov. 11, 1902 802,042 Higginson Oct. 17, 1905 398,657 Kimball Sept. 15, 1908 929,387 Chapman July 27, 1909 1,071,424 Hughes Aug. 26, 1913 1,175,404 Blattel Mar. 14, 1916 1,329,379 Dawson Feb. 3, 1920 1,389,754 Hale Sept. 6, 1921 1,422,950 Fargo July 18, 1922 1,464,313 Gardiner Aug. 7, 1923 1,553,967 Unger Sept. 15, 1925 1,589,170 Johnson June 15, 1926 1,599,526 Hatz Sept. 14, 1926 1,667,979 Miller May 1, 1928 1,841,575 Dorsch Jan. 19, 1932 1,942,595 Fischer Jan. 9, 1934 2,294,745 Goetz Sept. 1, 1942 FOREIGN PATENTS Number Country Date 691,721 France 1930

Images