US1902795A

US1902795A - Drawer suspension

Info

Publication number: US1902795A
Application number: US478941A
Authority: US
Inventors: Carl F Wolters
Original assignee: Remington Rand Inc
Current assignee: Remington Rand Inc
Priority date: 1930-08-30
Filing date: 1930-08-30
Publication date: 1933-03-21
Anticipated expiration: 1950-03-21

Description

March 21, 1933. c. F. WOLTERS 1,902,795

DRAWER SUSPENSION Filed Aug- 30, 1930- -4 Sheets-Sheet l S14/wanton arllf /Zlers MAC/3M@ C. F. WOLTERS DRAWER SUSPENSION March 21, 1933.

4 Sheets-Sheet 2 Filed Aug. 50, 1930 l I llxhlllllHUlUhlhlVlL.

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...1., I l l l I l l l IIL ,r l l l I I I I l l Il NN mm. G UHIUIHHIIHIMI March 2]-, 1933. c. F. WOLTERS 1,902,795

DRAWER SUSPENSION l Filed Aug. so, 1930 4 sheets-sheet s Carli? Wlters w" zu' ,4.03%

March 21, 1933. c. F. WOLTERS DRAWER SUSPENSION 4 Sheets-Sheet 4 Filed Aug. 30, 1930 m n n Qwoanto Carl l? Wlfe/rs MAGS@ Patented Mar. 2l, 1933 UNITED STATES PATENT OFFICE CARL I'. WOLTERS, OF OHIO, ASSIGNOR TO REMINGTON RAND ING., OF BUFFALO, NEW YORK DRAWER SUSPENSION Application led August 80, 1830. Serial No. 478,941.

This invention relates to a drawer suspension and particularly to a drawer sus ension having a rack and pinion mechanism or controllin the relative movement of the parts 5 thereo with respectto each other and means whereby the relatively movable parts may beset in an adjusted position for normal operation and for compensating and changing the relative position between the relatively movable parts when they are assembled in a position which does not correspond to this normal relative position.

v The invention herein set forth is an improvement over the drawer suspension mechanism disclosed in Patent No. 1,758,550, patented May 13, 1930.

Difficulty has been experienced heretofore in the construction of drawer suspension mechanism having a case slide secured to the cabinet, an intermediate slide and a drawer slide relatively movable with respect to each other and the case slide, in which a pinion carried by the intermediate slide intermeshes with racks on the drawer slide and the case slide, due to the fact that when the drawer is entirely detached from the cabinet by removing it with its drawer slide from its supported relation on the cabinet by the drawer suspension mechanism, it frequently happens that in replacing the drawer in the cabinet care is not taken to properly position the intermediate slide with reference to the case slide i and the drawer slide so as to obtain proper intermeshing of the pinion with the two racks.

' Improper setting of the drawer slide and the intermediate slide in their relation with each other and with respect to the case slide during the assembly or replacement of the drawer in the cabinet causes the intermediate slide as well as the drawer slide to travel in improperV relative positions and to support the drawer in an ineiiicient manner. also results in the over-travel of the intermediate slide which will interfere with the complete closing of the drawer due to the intermediate slide engaging stops at the end of the case slide or the rear end of the cabir, net. When such a condition exists it is usu- "9 ally impossible to fully close the drawer in This the cabinet while this further interrupts the pro er operation of the drawer suspension mec anism and interferes with the movement of the drawer to its full open position.

This invention overcomes these diliiculties by compensating for any variation in the relation of the intermediate slide to the drawer slide and the case slide during the replacement of the drawer, by the provision of special compensating and resetting means, which, by the movement of the drawer to the closed position and again to the open position, w1ll reset the intermediate slide in its proper position with respect to the drawer sllde and thecase slide with the pinion in proper intermeshing relation with the racks.

The invention further comprehends a number of features residing in the construction and relation of parts for obtaining the compensating action which are more particularly pointed out-in the following description disclosing a preferred. form of construction, while it is to be understood that variations i-n the construction and arrangement of thesel parts for obtaining these advantages form part of the invention herein disclosed.

In the drawings:

Fig. 1 is a longitudinal vertical section through a cabinet or container showing the` drawer pulled out beyond its normal open position and disengaged from normal operative elationship with the intermediate slide mem- Fig. 2 is a similar View showin the drawer in partially closed position and 1n which the intermediate slides are at their rear limit of movement against the stops on the case slides and the pinions of the intermediate slide members are in engagement with the racks on the drawer slides and with the positioning members on the case slides.

Fig. 3 is an enlarged inside elevation with portions broken away, of the drawer lsuspension at one side of a drawer detached from the drawer and cabinet, showing the drawer slide, intermediate slide and case slide in the` same relative positions of Fig. 2, showing the details of construction in this relative position.4

Fig. 4 is a`view similar to Fig. 3 showing` 10 the slides in the next relative position for a secondary compensating movement after the drawer slide has been moved to its rear limit of movement from the position of Fig. 3 and then pulled outwardly.

Fig. 5 is a view similar to Fig. 4 showing the parts pulled outwardly to the outward limit of relative movement slightly beyond the position of Fig. 4 controlled by the stops and at the completion of the secondary compensating movement, and which also shows the normal relative positions of the slides at the outward limit of movement when the drawer is open.

Fig. 6 is a view similar to Fig. 3 showing the normal operative relation and position of the slide members when the drawer is in closed position in the cabinet.

Fig. 7 is a detail perspective showing the three slide members in disassembled relation.

Fig. 8 is a transverse sectional view taken through the slide members at one side of the drawer.

Fig. 9 is a fragmentary side elevation with parts broken away showing the stop member on the drawer slide which normally limits relative outward movement between the drawer slide and intermediate slide, the stop member being shown in operative engagement with the stop shoulder on the intermediate slide.

Figs. 10 and 11 are fragmentary views illustrating different positions of one positioning member or idler dog during the idling operation. f

As shown in Figs. 1 and 2, a drawer 10 of conventional construction is mounted for sliding movement into a cabinet, casing, or piece of furniture 11, the drawings'particularly illustrating an insulated type of cabinet with an insulated front on the drawer formed to have the margins engage the cabinet to provide a sealed joint in closed position. The mounting or supporting mechanism for the drawer is preferably disposed between the side walls of the drawer and cabinet, there being two of these of which one only need be described since they are of similar but reversed construction.

A cabinet or case slide member 12 is secured in fixed relation to the cabinet Wall and has slidably associated therewith an intermediate slide member 13, which provides an extensible guide or track for a drawer slide or supporting member 14 slidablethereon and rigidly secured to the drawer 10. The details of construction of these members, which are preferably formed of sheet metal, are shown particularly in Figs. 3 to 8 inclusive.

The ucase or cabinet slide member 12 is of channel shapeI in cross section and is formed of a single piece of metal having a vertical section 15 provided with a plurality of apertures 16 for receiving screws or bolts for securing it to the inside wall ofthe cabinet.

Flanges 17 and 18 extend laterally from the upper and lower'edges, respectively, of the vertical section 15 and terminate 1n downwardly and upwardly extending

flange portions

19 and 20, respectively, so as to form tracks or guide channels at the upper and lower edges of the section 15, in which the intermediate slide member 13 is mounted for relative longitudinal movement. The upper flange 17 and the depending flange portion 19 thereon, are formedwith a recess 21 to receive a portion of a positioning member or idler dog hereinafter described, and the forward or outer end portion of the flange 19 extending forwardly from said recess is formed to provide rack teeth on the lower edge thereof. `A stop lug 22 projects laterally from the central rear edge of the vertical section l5 of the case slide and limits the rearward movement of the intermediate slide in a manner to be described, while an opening 52 in the forwardportion of flange 18 provides a shoulder at the forward end of this opening with which a latch member carried by the intermediate slide is adapted to engage for limiting the relative longitudinal movement of the intermediate slide outwardly from the case slide.

The intermediate slide member 13 is substantially channel-shaped in cross section and is formed of a piece of sheet material having a central vertical section 24 provided with a laterally extending flange 25 on the upper edge and a similar laterally extending flange 26 on the lower edge provided with an upwardly offset portion 28 connected to the edge of the portion 26 by a vertical flange portion 27, parallel to the section 24. An angle strip 23 has one portion thereof mounted against the central section 24 along the upper portion thereof with the edge abutting the under-side of flange 25, while the other portion of the angle strip 23 extends laterally from the section 24. This angle strip 23 has its forward end terminating flush with the forward end of the central section 24 and the rear end terminating in advance of the rear end of said section. The forward end of the laterally extending portion on the angle member 23 is provided with a recess 47 adapted to cooperate with a pivoted latch or stop member carried by the drawer slide 14 to limit the forward movement of the'drawer slide relative to the intermediate slide. The central portion of the upper flange 25 is cut away as indicated at 25' and a pinion 41 is rotatably mounted on the angle strip 23 and the central section 24 in the manner shown in Fig. 8, with the upper portion of its periphery projecting through the opening 25 and above the plane thereof and the upper edge of the intermediate slide 13 so that this pinion may have its teeth intermeshed with the rack teeth on the iange 19 ofthe case slide. The liange 25 terminates short of the rear end of the central or vertical :,eoavos c bearing roller 33 beyond the rear end of the flange 25 so that the periphery of this roller will extend slightly above the upper face of flange 25 and engage in the upper guide channel of the case slide and ride on the under face of the flange 17, in the movement of the intermediate slide in the case slide to the open and closed positions of the drawer.

The flange 26 of the intermediate slide at the lower edge of the central or vertical section 24 is provided with a luralit of o n- P y pe ings 30, one of these openings bemg in the central portion of the slide, and the other two openings being arranged adjacent the front and rear ends thereof. Rollers 31 car'- ried by shafts 32 project through the openings 30 while the s afts are rotatablymounted in a suitable manner between the central section 24 and the flange 27. The peripheries of these rollers 31 project below the lower facel of the flange 26 so as to have free rolling enga ement on the upper face of the flange 18 o the case slide in the manner shown in Fig. 8. 1

This intermediate slide 13 as above described fits between the guide channels formed by the upper and lower flanges 'of the case slide while the central section 24 of the intermediate slide is adjacent to the vertical section 15 of the case slide so that these two parts have what may be termed a telescopin arrangement in the Lamanner shown in ig. 8, with the peripheries of rollers 31 riding on the flange 18 and the periphery of the bearing roller 33 engaging the flange 17, while the teeth on pinion 41 will engage in the rack teeth 19 and operate in a manner to be hereinafter described. i

A latch 49 is pivotally mounted on the support for the rear shaft 32 of the rear roller 31 and has a forwardly projecting portion provided with a depending end which normally gravitates through an opening 51 in the flange 26 adjacent the rear end so that the lower end of the depending end 50 will ride on the upper face of flange 18 until the intermediate slide moves forwardly to such an extent that the opening 51 registers with' the opening 52 at which time the lower end 50 of the latch 49 will drop through the opening 52 and engage the 4shoulder formed at the front end thereof to stop the forward movement of the intermediate slide relative to the case slide. The rear face of this projection 50 on the latch 49 is inclined to form a camming projection so that the intermediate slide may be freely moved rearwardly until the rear end engages the stop 22. The intermediate slide can be readily removed from the case slide by lifting the latch 49 from engagement in the opening 52 whereupon itmay be withdrawn and entirely detached from the case slide.

The drawer slide member 14 is formed of a single piece of sheet material provided with a centra vertical section 35 having laterally extending

flanges

36 and 37 at the upperand lower ed es thereof respectively, both extend- Aing in t e same direction from the section 35. The laterally extending .flan e 36 terminates in an u wardly extending y ange portion 38 paralle to the central section 35 and is formed beginning in its central ortionto the rear end with a plurality of rac teeth to mesh with the pinion 41 carried by the intermediate slide. The rack teeth on this drawer` slide are opposed to the rack teeth on the case slide in the manner illustrated in the several figures of the drawings, so that in the movement of the drawer slide relative to the lc ase slide, a positive proportionate movement of the intermediate slide relative to the drawer slide and the'case slide will be obtained.

The lateral flange 37 on the lower edge of the central section 35 of the drawer slide is provided at its ed e with a depending flange section 39 paralle 'to the central section 35. At the rear end of the drawer slide', a roller bearing 42 is mounted. on the central section 35 between the

flanges

36 and 37 and is adapted to have the per1phery thereof ride on the under face of the laterally extending portion of the angle member 23 as clearly shown in Fig. 8. The lower face of the flange 37 of the drawer slide rides on the peripheries of the rollers 31 carried by .the intermediate slide in the manner shown in Fig. 8, so that the drawer slide when mounted in intertting relation withthe intermediate slide in the manner shown in Fig. 8, has free longitudinal movement relative to the intermediate slide while the rollers 31 and bearing 42 provide bearing engagement between these parts with the rack teeth on' the flange 38 intermeshing with the teeth of pinion 41.

A latch member 44 is pivotally mounted on the central section 35 in the center portion thereof between the

flanges

36 and 37 and .has a shoulder 45 on the forward end no1'- mally moved upwardly by gravity, due to the weighted rear end indicated at 46 so that it will ride on the under face of the,vv lateral flange of the angle member 23 on the intermediate slide, until it reaches the cut-out portion 47 of this member 23 when it will move upwardly into this cut-out portion and engage the shoulder formed at the forward end of this cut-out portion and limit the forward or outward movement of the drawer slide relative to the intermediate slide.

The forward end of this latch 44 has a lip or an extension 44f projecting forwardly beyond the shoulder 45 so that when the drawer slide is at its outer limit of movement with the shoulder. 45 engaging the shoulder formed by cut-out portion 47, this lip will project beyond the cut-out portion 48 in the forward edge of thevertical web 24 of the intermediate slide, in order that it may be depressed manually to disengage this latch and the shoulder 45 from en gement with the shoulder formed at the gdrward end of the cutout portion 47 of member 23. This will permit the detachment of the drawer slide from the intermediate slide and as the central section 35 of the` drawer slide is permanently attached to the sides ofthe drawer in any desired. manner, such as by screws, rivets or the like, the Vdrawer can be detached from connection with the cabinet and the intermediate slide in this manner. l

By means of the

latches

49 and 44 it will bef seen that the relative forward movement of the intermediate slide and the drawer slide relative to the case slide is definitely limited so as to control the extent to which the drawer is normally withdrawn from the cabinet and these latches are in their operative position, the drawer will be withdrawn to the required weavesv ed on the upper face of flange 17 and the pair of rack teeth 56 Aforming a continuation of' the rack on the lower edge of fiange 19 of the case slide. This idler dog will permit freel rotation of the pinion 41 when its periphery extends into the recess 21 as shown in Figs 10 and 11, and the angle portion 58 on the ex, tension 57 will permit this dog to pivot a sufficient amount that the pair of teeth 56 may freely pass the teeth on the pinion 41 to per- 75 mit its free rotation which has a sort of ratchet action in the manner generally indicated in Figs. 10 and 11.. l

Fig. 10 shows the dotted line position of the dog 53 at its upper limit of movement, whi'e the pinion 41 is idling in the recess 21 while Fig. 11 shows an intermediate position between Fig. 10 and Fig. 5 in an attempt to illustrate how the rack teeth on the dog coopthese parts are so proportioned that whenk vextent for permitting access to the contents.

thereof in the usual manner.

As above explained, two of these assemblies, comprising a drawer slide, intermediate slide, and `a case slide, are provided for mounting each drawer for movement into and out of the cabinet in whichvthe assembly on one side of the drawer will be formed in an opposite relation to the assembly on the other side and with this description of the assemblv which is at one side of the drawer, it is clearly apparent how the assembly at the oppisite side of the drawer will be constructe v A positioning member or idler dog 53 formed of a piece of stripmaterial is provided with an offset central portion 53. This idler dog at the rear at the offset central portion is pivotally mounted on a stud 54 carried by an angle bracket 55 secured to the flange 17 of the case slide adjacent to the recess 21. The oliset portion 53 overlies the recess 2l in the flange 19 and is provided with a depending projection formed with a pair of rack teeth 56 aligning with the rack teeth of the flange 19 and forming a continuation thereof at the rear end when the dog 53 is in the position illustrated in Fig. 5. The strip forming the dog 53 extends to the rear of the stud 54 on which it is pivoted to provide the extension 57 having the lower edge 58 inclined relative to the Aremaining lower edge of the 4strip and so formed that in the pivotal movement of the dog 53 o-n the stud 54, it will engage the upper face of flange 17 of the case member and limit the pivotall movement of the dog around the stud. The

60 forward end 59 of this dog is adapted to'have its lower edge rest on the flange 17 to limit the movement of the forward end of the dog downwardly relativeto the flange 17 so that the dog will normally gravitate to the posi- C5 tion shown in Fig. 5, with the portion 59 seaterate with the teeth on the pinion 41 so as to 85 set these teeth on the pinion 41 after the idling operation in proper relation with the rack teeth on the flange 19 of the case slide in -a manner which will be more clearly apparent from a consideration of the operation of these parts during their relative movements, in the manner hereafter described.

The drawer suspension above described` provides for the special compensation and setting of the drawer slide, the intermediate` slide, and the case slide in their properrelative positions foroperation regardless of the relative positions of these parts during as-` sembly, and by means of this special compensating and setting mechanism overcomes the previous disadvantage encountered in the use of a rack and pinion mechanism for controlling the relative motion of the intermediate slide and the drawer slide, relative to the case slide and each other, which required these parts when being assembled to be initially engaged in `their proper relative positions. Unless these `parts are properly as .sembed for operation, they will interfere l with the opening and closing movement of 11o` the drawer a/nd in constructions made previously whichiwere not provided with a compensating means, the failure to obtain proper fitting duringassembly prevented the'drawer from being fully closed, as well as interfering with the efficient operation during the opening and closing/movement of the drawer because the parts were out of position, and therefore, out of balance.

-With'the above described construction in- 120' cluding the special compensating' means provided by this invention, these parts can be assembled in any relative position, and the operation of the drawer after assembly will eHect a compensation between the relative positions of the parts and set themin their proper relative positions for normal opening and closing movement of the drawer.

When a drawer with its drawer slides is to be initially assembled with the remaining 139 net `or idle within the recesses 21.

parta of the drawer suspension and the cabior when it is totally withdrawn and detached from the cabinet and the drawer susnsion, the compensating means provided y this invention compensates and sets the slide members in their proper relative position. For example, the drawer shown in Fig. 1 is detached from its normal operative position in the cabinet and by further withdrawal outwardly from the cabinet, may be completely detached from the interme iate slides when it is to be replaced in the cabinet, the drawer with its drawer slides attached is positioned in the compartment inthe cabinet with each drawer slide engaging in its re'- spective case slide in the manner above disclosed and shown in the drawings and which may assume the position shown in Figure 1, after which the drawer may be pushed inwardly into the cabinet. During this movement of the drawer inwardly to its closed position in the cabinet it will be noted that the drawer slides in the position of Figure 1 are not in their proper relation with the case slide, but due to the free rolling engagement of the intermediate slides in the case slides the pushing ofthe drawer inwardly into the cabinet will cause the intermediate slides to move inwardly in the case slides to the rear position and for the purpose of illustration will frequently assume the relation disclosed in Figs. 2 and 3. l

In the position of the parts shown in Figures 2 and 3 it will be noted that the drawer and the drawer slides carried thereby have been moved inwardly relative to the intermediate slides to a considerable extent while during this movement the intermediate slides have been moved to their rearmost position in which the rear ends abut the stop lugs 22. In the position shown in Figures 2 and 3 the drawer slides have been moved rearwardly in the intermediate slides so that the racks formed thereon have intermeshed with the pinions 41 while each intermediate slide with its pinion 41. is in its rearmost position abutting the stops 22 with the periphery of pinion 41 in the recess 21 formed in the flange 17 of the case slide at which point it engages the rack teeth 56 of the idler intermediate slides and accompanying pinions are in the last described stationary position, further rearward movement of the drawer slides will cause the pinions to rotate (Figs. 2 and 3.) I

The rotation of the pinion by the rack on the drawer slide will cause the idler dog to move up and down on its pivot 54 due to the teeth on the pinion 41 riding on the teeth 56 of the idler dog. Due to the special formation of the teeth 56 the pinion 41 will be permitted to readily rotate under the operation of the drawer slide during the contlnued inward movement of the drawer to the closed dog 53- When thea, the opening 52 in flange 18 of the case slide,

"so that the which permits the sealing joints between marginal portions of the drawer front and the cabinet to tightly seal, the idler dog will fravitate so that the teeth 56 thereon will be moved into a position so that the pinion 41 will be in intermeshing engagement therewith in the manner shown in Fig. 3 and will cause the pinion to take a final position when the drawer is closed in which the teeth on the pinion will be in proper position, not only to mesh with the teeth 56 of the idler dog but to properly mesh with the teeth of the rack formed on the case slide.

Then, the drawer is pulled outwardly until the drawer slide, the intermediate slide and the case slide will assume the position shown teeth of the case slide so as to feed the intermediate slide forwardly "about one-half of the distance of travel of thedrawer slide relative to the case slide. Butthe position of Fig. 4 is not the outer limit of travel of the drawer for normal operation because the latch 49 is just reaching a position to become operative.

In fact in Fig. 4 the position of the drawer slide is disclosed which is normally assumed at its outer limit of movement relative to the intermediate slide and in which the latch 44 has become operative by engagement of the shoulder 45 with the forward end of the recess 47 in the angle member 23. It will be noted, however, that the latch 49 has not engaged the shoulder at the forward end of intermediate slides can move forwardly a short distance relative to the case slides. From this position of the parts the drawer is then withdrawn to its full outward position when the latch 49 engages the shoulder provided at the forward end of the opening 52 which then arrests the forward motion of the drawer relative to the cabinet. This position of the parts is shown in Fig. 5 and in the movement of the parts from the position shown in Fig. 4 to that shown in Fig. 5 it will be noted that the pinion 41 will rotate that in this rotation the pinion will move relative to the drawer slide because when the parts reach the position of Fig. 4" the last a tooth of the rack on -the drawer slide moves is for the reason that just beyond the periphe of the teeth on the pinion 41. As a result t e drawer slide and the intermediate slide move together relative to the case slide until the latch 49 operates to stop diate slide, and in this iinal position of the parts shown in Fig. 5 they will then be set in the proper relation for subsequent closing and opening movements of the drawer. This when the draweris again pushed inwardly the last tooth on the rack `of the drawer slide will immediately engage the adjacent tooth on the pinion 41 and the drawer slide and intermediate slide will then move relative to each other in the case slide under the control of the pinion intermeshing with the two racks.

When the drawer is again moved inwardly to its closed position it will be noted that the intermediate slide has had its position changed from that shown in Fig. 3 to a position slightly forward of the position shown in Fig. 3, so that ,when the drawer is again closed the intermediate slide will not lmove rearwardly into engagement with the stop 22 but will be spaced a slight distance therefrom, in which position the pinion 41 will still he in mesh with the rack teeth on the case slide by engaging with the last tooth thereof as shown in Fig. 6. The two relative positions of the intermediate slide relative to the case slide are clearly shown in Figs. 3 and 6 by the position of the forward end of the intermediate slide relative to the case slide. In Fig. 3 it will be noted that the forward end of the intermediatelslide has moved rearwardly of the forward end of the case slide while in Fig. 6 the forward ends of these two slides have stopped flush with each other. By having the parts equipped for operation into forward and rearward relative positions as disclosed in Figs. 5 and 6, free and unobstructed movement of the-drawer is obtained by means of these slides which freely suspend the drawer for movement in the cabinet in order that it may be readily moved into closed position without any part of the suspension mechanism for the drawer interfering with the position of ,the drawer when it is closed.

.In this way sealing joints on the margin of the drawer front can be effectively engaged in sealing relation with complementary joints on the cabinet, although this drawer suspension is equally operable on any type of cabinet provided with drawers that is desired, regardless of whether the drawer front is constructed for sealing engagement with the front of the cabinet.

What is claimed is:

v1. In a drawer support of the type having a case member, an intermediate member in and supported by the case member a drawer member in said intermediate member, and

the movement of the interme-I an having the teeth engaged in opposed rack teeth on the drawer an case members, a construction wherein a recess is provided in said case member adjacent to said rack teeth thereon, to permit said pinion to rotate out of l eme'nt with the rack teeth on said case enga mem r, and a member having rack teeth forming a rack extension adjacent to said recess to position said pinion teeth for reengagement with the rack teeth on said case l member.

2. As an article of manufacture, a casing member of channel cross-section, having a web portion and angularly disposed ange portions, the forward edge of one of said flange portions being provided with rack teeth, said edge having a recess adjacent to s aid rack teeth, and a movable positionin member having rack teeth extending into said recess, forming a continuation of said and a lug extending in the direction of said flanges from the end of said web portion opposite to said rack teeth.

3. As an article of manufacture, a-rack member having rack teeth at the forward end thereof, and having a recess at the rear of the portion having the rack teeth, and a pivoted member having rack teeth extending into said recess and forming a continuation of the rack teeth on said rack member. p

4. A drawer support comprising, a cabinet member formed with a rack, an intermediate member slidable thereon, and a drawer member formed with a rack slidable on said intermediate member, a pinion rotatably mounted on said intermediate member, teeth for engaging said pinion with said racks, one of said racks havingA a recess adjacent to the teeth thereof and stop means for engaging said intermediate member when said pinion is adjacent to said recess.

5. A drawer support comprising, a cabinet member having a rack, an intermediate member, a drawer mem er having a rack, a pinion rotatably mounted on said intermediate member, said racks havingthe teeth thereof in engagement with said pinion, one of said members having a recess adjacent to the teeth forming the rack thereon, and stop means for engaging saidv intermediate member when said pinion is adjacent to said recess and out of engagement with the teeth of said rack, and a member forming a rack extension pivoted to the member having said recess and having teeth extending into said recess to forn a continuation for the teeth of said rac rack,

6. A drawer support comprising, a cabinet member having a rack, an intern'iediate member slidable relative thereto, a drawer member having a rack slidable relative to said intermediate member, a pinion rotatably mounted on said intermediate member, said racks having teeth for meshing with said pinion, said cabinet member having a recess adjacent to the teeth of the rack thereon, and means operable by said pinion in passing out of engagement from the rack teeth on said cabinet member whereby said pinion may rotate Without longitudinal movement relative to said cabinet member, said means functioning to position the teeth of said `pinion for meshing engagement with the teeth on said cabinet member.

7. In a drawer support, a cabinetmember having teeth thereon, an intermediate member slidable relative to said cabinet member, a pinion mounted for rotation on said intermediate member and for engagement with said teeth, said pinion being movable to a position out of mesh with the teeth ot' the cabinet member, and means positioning the teeth of the pinion for reengagement with the teeth of the cabinet member.

8. In a drawer support, a member having teeth thereon, a second member slidable relative to said first mentioned member, a pinion rotatable on said second member and adapted to mesh with said teeth, said first mentioned member having a recess adjacent to said teeth, whereby said pinion may rotate out of mesh with said teeth, and means positioning the teeth of the pinion for meshing reengagement with the teeth of said first member.

9. A drawer suspension, comprising a plurality of slide members interengaged for relative limited longitudinal movement, rack teeth on certain ot said members and a pinion on another of said members intermeshing with said rack teeth for normally retaining a predetermined relation between said members during relative movement between limits, said members having means operable to release said members from said limited movement for detachment from one another, and means compensating for differences in the relative positions ot said members on disassembly and reassembly and for re-setting said members in said normal predetermined relation.

l0. In combination with a cabinet having a longitudinally movable drawer therein, a drawer support comprising a pair of cabinet slides mounted within the cabinet in parallel spaced relation, an intermediate slide slidably mounted on each cabinet slide, a drawer slide slidably mounted on each intermediate slide, said drawer secured to the drawer slides, said cabinet slides and drawer slides having rack portions, a pinion mounted on each intermediate slide in meshingr engagement with adjacent rack portions of the on said member in further relative sliding movement of said members.

CARL F. WOLTERS.