US2333097A - Storage cabinet, and more particularly printer's form storage cabinet - Google Patents

Description

s FORM STORAGE CABINET Nov. 2, 1943.

w. A. Duoc ErAL STORAGE CABINET AND MORE PARTICULARLY PRINTER Filed July 14, 1941 4 Sheets-,Sheet l 0 au ii. I- K J w. A. DUBoc ET AL 2,333,097

S FORM STORAGE CABINET Nov. 2, 1943.

STORAGE CABINET AND MORE PARTIGULARLY PRINTER 4 Sheets--Sheecl 2 Nov. 2, 1943. w. A. DUBOC ET AL BINE' 4 Sheets-Sheet I5 STORAGE CABINET AND MORE PARTICULARLY PRINTERS FORM STORAGE CA Filed July 14, 1941 wmf W. A. DUBOC ET AL 2,333,097 STORAGE CABINET AND MORE PAETICULAREY PRINTEEs FORM STORAGE CABINET Nov. 2, `1943.

FiledY July 14, 1941 'Illllll Il 4 Sheets-Sheet 4 wf Cl Patented Nov. 2, 1943 STORAGE CABINET; MORE PARTICU- LARLY PRINTERS FORM STORAGE CABI-V NET `Willianrx A. Duboc, Ralph I. Scheuer, and Gary R. Christensen, Two Rivers, Wis., assignors to Hamilton Manufacturing Company,

Two

Rivers, Wis., a corporation of Wisconsin Application July 14, 1941, Serial No. 402,388

11 Claims., (Cl. 214-97) This invention relates to storage cabinets more vparticularly of the class employed by printers for temporarily storing theirwpage forms or the like.

As is well known, after a. form has been set` up for a given page to be printed including the "type, cuts, etc., Vand surrounded by a chase or frame, the wholeimust be temporarily stored until ready to be run on the-press. Such forms frequently weigh asmuch as one hundred and thirty-five `pounds or thereabouts, so that they are cumbersome to handle. A cabinet to temporarily store -suchforms has usually had a Verticalseriesof shelves, each shelf receiving one of the forms, which are generally transported to v `the cabinet on a truck or other conveyance,` the problem ensuing of transferring the form from the' truck toa shelf Vof the cabinet. Since the truck has a fixed height, this problem is accentuated .when the sheft ofthe cabinet in which the particular form is to be received is materially above or below the level of the. truck.

`It has been proposed to have a cabinet which could be raised or lowered to brnga particular shelf into the horizontal plane of theform as it:

is carried by the truck, but such a cabinet is restricted in height tothe height of the truck, in addition to the-objection that it requires heavy fixtures and equipment to raise an entire cabinet of `this kind. As `an alternative, it has been suggested that the cabinet could have an elevator shelf, vertically movableat its front, of an areasuflicient to receive the form and the form transferred to this vertically movable shelf to ,be then transferred therefrom to the finalvshelf or letter-board of the cabinet. Such a device, however,` has proved inadequate to meet the problem, since it requires two transfers, one from the` truck to the` vertically movable shelf and vthen another transferfrom the vertically movi ywill be rendered rapid and safe,` with a minimum of effortor care on the partof the operator.

I t is a lfurther object of the invention vto embodysuch a device in an attractive cabinet, relatively `simple and economical in construction, with a minimum of parts, and yet strong and durable,` and in which Ythe power for its operation is supplied by anelectric motor mounted out of sight within the cabinet, wherebythe cabinet will occupy a minimum of ioor space while. affording almaximum storage capacity and may be placed. in immediate positionv for operation merely by. plugging in a cord to `an ordinary electric wallsocket, .the whole ,thus providing a compact unitary structure of pleasing appearance.

Other objects and advantages will be apparent from the following description, taken together with the accompanying drawings, in which Figure 1a. is a small perspective View of a cabinet embodying the present invention; v

Figure l isa front elevationalview ofthe cabinet of Fig. la on a larger scale with parts omitted, and being a staggered section in part taken on the line I l of Fig. 2 with other parts broken away for purposes of description;

Figure 2 is a view taken on the line 2 2 of Fig. 1, and being a section from'front to rear of the device as a whole;

Figure 2a. is a plan View of the top of the control boX shown in Fig. 2 and being-a fragmentary section taken on the line 2dr-2a. of Fig. 2;

Figure 2b is an elevational view of the indicia and indicator for the elevator shelf and being a fragmentary section taken on the line 2b 2b of Fig. 2; i i

Figure 3 is a fragmentary vertical sectional view` from front to rear of the device showing a portion of the structure shown in Fig. 2 but with the parts in alternativev position and showing in dotted lines other possible positions of parts;

Figure 4 is a fragmentary front elevational viewpartially in section taken on the line 4 4 of Figure 5 is a fragmentary perspective view of parts shown in Figs. l, 2, 3 and 4` cna ylarger scale;

Figure 6 is a fragmentary plan section taken on the line 6 6 of Fig. 3 on a larger scale;

Figure 7 is a fragmentary staggered plan section taken on the line 'I 'I of Fig. 2;

Figure 8 is a fragmentary plan section on the line 8 8 of Fig. 2, on a larger scale;

Figure 9 is a fragmentary plan section taken on the line 9 9 of Fig. 1, but with the letter-board omitted; and

Figure 10 is a reduced plan viewof the letterboard with a position of a form thereon indicated.

Referring in detail to the illustrative construction shown in the drawings, the numeral Il indicates the cabinet as a whole, which may be conveniently made of sheet metal, having the side walls l2 and I3 and top wall I4 and rear wall l5. The side walls l2 and i3 desirably merge into a base portion as at l and lll, respectively, at each side of the cabinet, and the panel for the top wall I4 also desirably merges as by rounded contours I3 and i9 into the rear andv front of the cabinet respectively to enhance its appearance. Below the upper facade portionv I@ of the cabinet and between the side facade portions 2li and 2l, the front of the cabinet is recessed as at 22. The side facade portions 2@ and 2l are bent inwardly as at 23 (Figs. 'l and 9) to further deine the recess 22 and to provide working spaces between the inner walls 23 and the outer side walls of the cabinet l2 and I3 for purposes more in detail presently pointed out.

Disclosed in the recess 22 are a plurality of differingly elevationed locations or levels here de- Y termined by pairs of angle members 24, the horizontal `flanges .of which are for a given pair horizontally aligned, and the vertical flanges of each aligned onek withanother `lof the various pairs, and may be secured as by welding to the interior walls 23 as best shownin Figs. 1 and 9, and to the rear wall l as best shown in Figs. 2 and '7. It will beseen that the horizontal flanges of the angle members 213 are discontinued adjacent the front of the cabinet, short of the terminations of the vertical flanges. To these ends of the vertical flanges are axled rotatable bearing members 25, theaXles 26 therefor, as best shown in Fig. l, passing through the vertical flange of the angle member 24 and through the inner' wall Vpart 23 to which theraXle is clamped as by nut 2 threaded thereonto. i

In accordance with the present invention, a horizontally movable shelf is receivable in the cabinet at each said elevation, said shelf being represented, in this instance, by what is known in the printing trade a letter-board 28, only one of which is shown-in the majority of the Afigures of the drawings, but a vertical series of which is indicated by the reduced View, Fig. la.

The letter-board comprises a platform 29 and a pair of channeled sides, `these channeled sides 29a being each made up of a lateral overhang 3i) (Fig.`5), the margins of which are turned into a depending flange 3l, and an upright 32 which is out-turned at its bottom to form a lateral underhang 33. Reinforcement of the letter-board as just described isv effected by bending the platform 29 downwardly at front and rear as at 34 and 35, Fig. 3. Each of the uprights 32 has mounted thereon at the rear of the letter-board a roller-36 on an axle 31.

As will be best seen from Fig. l, the channeled sides 29a of the letter-board receive the angle members 2d with their rotatable bearing members 25` so that in horizontal sliding movement of the letter-board 28 inwardly and outwardly of the cabinet the overhang 3@ at each side of the letter-board rides on the rotatable bearing member 25 at that side of the cabinet, the depending flanges 3l limitingl lateral movement of the letter-board as by frictionally embracing the rotatable bearing members 25. Spacer washers: 25a locate the rotatable bearing members 25 for a given elevation at just the distance apart to be embraced by the depending flanges 3l of the letter-board. The rollers 3b at the rear of the letter-board ride on the horizontal flanges ofthe angle. members 24 during this movement, thel underhang 33 of the letter-board channeled sides 29a being spaced downwardly of the roller 3S sufficiently to receive the horizontal flange of the angle member 2d therebetween. It will be noted from Fig. 1 that the width of the channeled side 22a is such that the roller 36 on the letter-board is inwardly offset from the rotatable bearing member 25 on the cabinet so that the letterboard may be entirely withdrawn from the cabinet, these two rotatable members 25 and 3B passing by each other without abutting.

Further inV accordance with the present invention, an elevator shelf 38 is carried by the cabinet and vertically adjustable adjacent each letterboard for sliding movement of any letter-board onto the elevator shelf. The elevator shelf 33 comprises in this instance, a horizontal plate 39 (Fig. 9) to the sides of which are secured supports til for anti-friction members 4 I, two adjacent the front margin and two adjacent the rear margin of the elevator shelf, and journaled on axles 42, seoured'as by nuts 43 so that the anti-friction members 4i project slightly above their supports 15G, as best shown in Fig. 2. The supports 4 are offset slightly inwardly as at 44, and the antifriction members 4I are on the inner faces of the supports d so as to be aligned, from front to rear `of the cabinet, with the rollers 36 on the letter-board 28. YAt their inward margins the supports 4t have their upper edges bent horizontally as at 135, these parts being partially severed asat 46 to permit this.

Thus, when the elevator shelf 38, which is supported vertically yadjustable on the cabinet as presently described, is placed in front of one of the letter-boards 28 and on the proper level therewith, as for example, shown in Figs. 2, 3

and 4, the letter-board may be slid horizontally forward onto the elevator -shelf 38 and entirely withdrawn from the cabinet so that the elevator shelf 38 may then be lowered or raised as the need may be, lto the level of a transfer truck (not shown), and a chase as suggested by the broken lines di fmay be transferred from the truck onto the letter-board 28, now carried'by the elevator shelf 33, as best shown in Fig.- 3. The elevator shelf may thereupon be returned to the level from which the letter-board was withdrawn and the letter-board slid back from the elevator shelf, with the chase l'd still thereon, into the cabinet for storage.

In these sliding movements of the letter-board and referring in detail to one side of the structure, it being understood that the other side is similar, the underhang 33 of the letter-board, in the movement of the latter out of the cabinet, moves beneath the horizontally bent portion 45 of the elevator shelf and the inward offset 44 thereof so. that the overhang Sil of the letter-board rides onto the anti-friction members 4I on the elevator shelf, it being remembered that lthe bent down front margin 34 of thefletter-b'oard Vterminates short of the channeledsides 29a of the latter, as best shown in Fig. l, so as` not to interfere with these channeled sides riding onto and receiving therein the upper margins'of the supports4 lli of the elevator shelf, asbest shown in Fig i Thus, the angle members 24 -of the cabinet and the supports 40 on the elevator'shelf constitute tracks and the channeled sides 29 of the letterboards constitute runners, matirfgfor movements of the letter-boards. 'The tls'cping interengagement of the letter-boardl and elevator shelf permits the velevator shelf tobe of substantially elevator shelf.

4 `less area than the letterboard, to conserve floor "space, while at the same time securely supporting the letter-board thereon in cantilever arrangement with the letter-board projecting beyond-the -elevators`helf whenit is fully withdrawn from `the overhang 39 and the underhang 33. At the Sametime, the roller 36 will abut from front to 'rear the inner antifriction member 4| and thus the elevator shelf, as indicated in Fig. 3.

To releasably fix the letter-board from inward `movement on theelevator shelf when the letterboard has been withdrawn to its limit, detent means may be provided here representedby a plate Y5E) welded to the inner face of the upright 32 of the letter-board, sayv intermediate its length, and having a triangular ange pro- -viding a Ward for a latch 52 carried by and adjacent the front of the elevator shelf 33.

The latch `52 may be pivotally carried as at 52a by bracket 53 welded to the under side of the plate 39 of the elevator shelf, the upper end of the latch `projecting through a` laterally elon i gated slot 54 in the plate 39, -and the lower end of the latch 52 being deflected laterally and outwardly continued to form a handle 55 accessible to the fingers of the operator, at the side of the There may be two of such latches,A as shown.

In order to permit actuation ofone of the `handles 55 to cause release of the latch at each `sideof the structure, a crank lever 56 is pivoted `as at 51 on a bracket 58 fastened as at 59 centrally of the under face of the plate 39, and to the opposite ends of this cranklever 59 are attached `rods 60 articulated therewith and each with one of the handles 55. Thus, when one of the handles 55 is pulled laterally outwardly vby the operator, the other is mechanically moved likewise. To normallybias the handles inwardly to locking position a tension coil spring 6| may beanchored as at 62 to a bracket 63 also fixed as at 64 on the under face of the plate 39 adjacent the bracket 58, the free end of the spring being attached as at 65 to the upper arm of the crank lever 56. When the letterboard 28 is moved to its outer limit on the elevator shelf 38the latch 52 will be cammed outwardly `by the tapered surface 66 (Fig. 6) of the ward 5| against the pull of the spring 6i, until the ward passes by the latch, which latter thereupon snaps back under the pull of the spring 6| into abutment with the straight face 51 of the ward.

Looking lnow more in detail at the illustrative construction here shown for supporting the ele- -vator shelf 38, and turning again rst to Figs. 2

and 9, a three-sided plate 68 is secured at'eac'h side ofthe elevator shelf 38 as by spot-welding at 69 to the antifriction support members 40 of the elevator shelf at the inner endof the shelf toreinforce the latterin a cantilever mounting there- .wardly as at 12 and again bent upon itselfas at 13, theportionsll and13tbeing secured tothe limit outward movement of the letter-board on A three-.cornered plates 88 and cooperating @with the latter Vto effect astrong beam structure for 'the elevator shelf inf=association with the canti- `their upper ends as at 14, and to-these rearward extensions are rotatablysecured as on axles 15 passing through both parts 40a and 14, and clamped by nuts 15a, wheels 19. To lower rearward extensions 11 of the triangular plate 88 as on axles 18 are clamped, by nuts 18a, wheels 19. The wheels `16 and .19 are offset laterally outwardly of the elevator shelf 38, as best shown in Figs. 1 and 9, the axles 15 and vTIbeingrextended for this purpose and carrying spacer washers and 8|, respectively, so as to be received in vertically extending oppositely inwardly facing grooves 82 formed at each inner side of the front of the cabinet, as by beingbentfrom the inner walls 23 thereof, as shown in the drawings, these grooves 82 thus providing tracks in which the wheels 16 and 19 of the elevator shelf travel in the vertical movementpof the latter as actuated `by the endless conveyors next described, which `represent elevator conveyor means parts.

lSuch endless conveyors are here shown in the form of chains 89, one at each side of the cabinet and disposed in the spaces provided between the outer side walls and the inner walls 23 respectively. At the top of the cabinet eachchain 83 passes over a sprocketfd and then at is front runs downwardly into the groove 82, the walls `23 and grooves 82 being discontinued just below the sprockets 84 so that the chain may pass into the upper end of the groove. Each sprocket 84 may turn freely on an arbor 85 pinned as at 85a at its `outer end in a bracket 86 bolted as at 81 to the outer wall of the cabinet, the arbor 85 being supported at its inner end by the-inner wall 88 somewhat vertically aligned with the inner wall 23. Filler sleeves 84a and 84h interposed on the arbor 85'at each end of the sprocket 84 maintain it in `proper axial rotatable position on the arbor 85.

At the base of the cabinet, each of the chains 83 passes over a sprocket 89 pinned as at 89a on a shaft 90 which is here a single shaft for both sprockets extending across the cabinet and jour- Analed at its outer ends in bearing brackets 9| secured as by bolts 92 to plates 93 at each side of the cabinet, which plates are bent as at 94 (Figs. 7 and 9) to lap and be welded to the inner faces of the front side facade portions 29 and 2| respectively, the main parts of the plates 93 which carrythe bearing brackets 9| also being welded as at 95 to the front-to-rear extending walls of the grooves 82 in the plates 23. Part 93 may be cutaway as at 93h forpassage of the shaft 99 and hub of bearing 9|. The sprockets 89 project through slots 96 in the walls of the grooves 82 so as t0 dispose one run of each of the chains 83 in a groove 82 in position to be supportingly connected to the elevator shelf 38, as next described.

`As here shown, and referring particularly to Figs` 2 and 8, the three-sided reinforcement pieces 68 `of the elevator shelf have additional rearward extensions 91 vertically intermediate their extensions 14 and 11 but bent to be laterally outwardly offset therefrom as best shown at 98 (Fig. 8) to `extend into the grooves 82 and to which are of lthe chain 83. The screw-bolts 99 are extended substantially beyond the link so as to Vride as at IOI frictionally in the grooves 82 and further to preventappreciable sidewise play of the elevator shelf. 38,V there being desirably at least two of the screw-bolts 99 at each side vertically spaced apart. As best shown in Fig. 2, the extension S1 may have vertically elongated slots |62 through which the screw-bolts 99 pass to permit adjustment of the elevator shelf for leveling purposes or the like on the chains, the links Ill having tapped holes |03 into which the screw-bolts t@ thread to securely clamp the elevator shelf to the chains. One end of each link Il) is pinned .as at |64 toone end of one of the chains 83 and at its other end is boltedfas at |535 to the other end of the chain, there being here again a vertically elongated slot |06 through which the bolt passes to permit taking up slack in the chain.

To provide for motor operated means for moving the chains 83, the common shaft Sii for the lower sprockets 89 of the chains is extended at one -side of the cabinet, as at |[lV (see right-hand side of Fig. 1; also Figs. 2 and 7) to carry another sprocket wheelllElS preferably of larger diameter than the sprockets 89 and vover which is entrained an endless driving lchain |69 passing also over a relatively small sprocket H0 on the outputshaft I I |A of a self-contained speed reducvtion motoi device |I2, suitably supported as by is of the conventional reversing type and that appropriate wiring is provided as is well known in the art and need not be here shown for connecting the motor device with the usual electric wall socket or other current outlet. In such wiring may be provided a manually controllable switch H4 having a hand switch lever ||5 which is adjustable to three positions, one, say, as indicated a-t IIB (Fig. 2a.) by the letter U determining the position of the hand switch lever |i5 for upward movement of the elevator shelf 38, and another indicated at lil' by the letter D for downward movement of the elevator shelf. The intermediate position which the hand switch le- Ver occupies as indicated in Fig. 2a may determine the` offf position of the switch for discontinuing they current to the motor device and thus bringing .theelevator shelf 38 to a stop. In order to prevent v'overrun of the motor and consequently of the elevator shelf, the motor device is desirably provided with a magnetic brake which may be a part of the conventional self-,contained device I I2 purchasable on the market. ,Also, the motor device maybe one adapted for alternating current or one adapted for direct current, as the needs of a particular installation may dictate.

' Ihe elevator shelf 33 may be advantageously v twenty seconds, an interval short enough for eX- peditious use of the device while still slow enough `to prevent jarring of the type and to permit accurate location of the elevator shelf at a par- Y ticular level for a given letter-board. The hand movable shift bar |28. When 'the switch lever ||5 is vadvantageously normally Ybiased to oi position by spring means (not shown) usualin such switches.

To the end that the current shall be automatically discontinued to the motor device ||2 in spite of the position of the hand switch lever ||5 of the switch H4 when the elevator shelf 38 reaches either the upper limit or the lower limit of its travel, a pair of limit switches ||8 and ||9 are provided as here shown. The physically uppermost limit switch I I3 (which, however, controls the downward extreme lmovement of the elevator shelf) here may be mounted on a bracket |2|l (Fig. 2) carried by one of thevangle members 24, and may have a switch lever I2| which is normally spring biased tolclosed circuit position, as is Well known in the art and need not be here fur-ther described.

Assuming that the hand switch lever ||5 is placed at its D or down position, as indicated at lll (Fig 2a), the switch lever I2| is disposed in the path of a lug in the form of a collar |22 carried by the inner run of one of the chains 83, in this instance the chain 83 at the same side of the device at which the motor drive is located. Thus, when the elevator shelf reaches its eX- treme lowermost position as indicated in Fig. 2,

vthe collar |22 will move the switch lever I2| to If it be desired to stop the elevator shelf opl posite any one of the letter-boards 28, the switch lever ili of the switch mechanism H4 is manually moved to neutral or stop position as inclicated in Fig. 2a. If this be not done before the elevator shelf reaches the upper limit of its travel (assuming now the hand switch lever H5 is at U or up position as at H6) the collar |22 will move the switch lever |23 of the upper limit switch H9, which switch lever |23 also lies in the path of the collar |22. Since the switch lever |23 is also normally spring biased to closed position, it will be moved by the collar y|22 temporarilyto off position, thus discontinuing the circuit through the motor device ||2 and preventing further upward movement of the elevator shelf 38. The switch ||9 may be carried on a bracket IlSa also supported by one of the angle members 24 below the angle member which supports the switch I8.

Provision is here made, in accordance with the present invention, for safety switch mechanism which will automatically stop the motor device |i2 at any time if one of the letter-boards 28 be only partially' but not wholly removed from the cabinet, the purpose of this being to prevent a coliision between such a partially withdrawn letter-board and the elevator shelf 38. To this end, there is normally disposed in the plane of horizontal travel of each letter-board at one side of the cabinet, in this instance again the same side as the motor drive, a roller IES. The axles of the rollers |24 eachrpass through a slightly vertically elongated slot |25 in the wall 23 at this side of the cabinet, and are all mounted' as by axles |26 and nuts |2`| on a common vertically shift bar |28 is in its normal position moved thereto by gravity, the rollers |24 -will ,occupy theirlowermost positions at the bottom of the slots |25'to `*be 1in, the pathA of the Vletter-boards. j

"If, .now, .one of the letter-boards be partiall withdrawn` from the cabinet, as indicated `in dotted `lines at .|29 (Fig. 3), the roller `|24 .in the path of this `.particularletterfboard will beelevated as .at l29a, the rounded frontedge ofthe letter-board 4.and therotatable `character ofthe roller |24 Vcarnming the latter upwardlyto ride` on the :upper surface of `th letter-board and `at the same .time moving `the shift bar |28 upwardly;`

At its lowerend, theshift bar |28n=ormally :rests by gravity 'ion aswitchllever |30` of the safety switch |3|` which may be appropriately mounted on the inner face of an apron |32'fhavin'ga bib |3211 andv `whichcloses `the lower front `portionrof the cabinet. Part 23` may be cut away as at 23e to accommodate switch |3|. vThe switch `lever |30 ismoved to circuit closing position and normally kept there by the weight of the-shift barl 23 pressing it downwardly as indicated lin' Figs. '1 and 2, but when the shift bar |28 is raised as already described and as indicated in dotted `lines in Fig.

`3 vby movement of a letter-board therepast,1 the switch lever |30 of the Asafety switch |3| is spring biased to` circuitlopening position, thus discontinuing the circuit'to the motor ofthe motor device ||2` if-one of `the letterLboards is in partially withdrawn position. When; now, such a partially withdrawn letter-board is either slid back entirely into-the cabinet or Withdrawnentirely so as to rest completely on the elevator shelf 38 as shown inv -full lines in FiguB, the shift bar |28 is free to drop under the influence of gravity `and -to again close lthe circuit to the -motor device through lthe switch"`|3 permitting this circuit to be under the Icontrol of the manually controllable -switch |:4 and the up and down limit switchesV l I8 `and I 9. e `Inorder to readily indicate the proper vertical adjustments of the elevator'shelfthe latter may carry a finger or indicator `|33 (Fig. 2b) secured as at |34 to the side of the elevator shelf closely adjacent the sidefacadefZl,` of the'ca-binetgand having a pointer |35. 'The pointer |35 registers with vertically spaced lines |36 carried ,by the facade of the Gabinetto indicate the elevation in thecabinet, each line 36 having one ofa series of numbers or other indicia thereabove corresponding to the number of letter-board elevations in the cabinet. Such `registry thus indicates when the elevator shelf Iis in verti-cal adjustment for withdrawal of a particular letter-board fromthe cabinet thereonto or return thereof to the cabinet.'`

Aswill be best seen;v from Figs. 3 and-10, the f of the outer sideedges of the letter-board so 4as not to interfere with an angle member 24 of a next higher letter-board and also so as not to interfere withfthe functioning of the safety switch roller |24 in cooperation with the letter-board, as already described.

lIt will be understood that the rollers, wheels,

' letter-boardthis stop strip also terminatingshort anti-friction members, and rotatable bearings herein referred to may be `provided with ballbearings to further minimize friction.

Thus,the cabinet may have an enhanced plurality of elevations to receive forms, while at the same time minimizing the sizeof themotor and other operating `equipment required. nFurthermore, .the cabinet takes up materially less floor space than would be necessary if the yelevator shelf 3B were required to be of `suiicient area itself to receive the chase enclosed form directly.

Not only is the present device of` utility in transferring a form to and from the cabinet, but also if it be. desired to inspect a form in- `the cabinet, without. removing it, it may be withdrawn from the letter-board onto the elevator shelf and then returned to place. l

So constructed and arranged, a compact, unitary, attractive and efficient cabinet is'provided.' It may not be essential, however, under every Vcircumstance that `all features of the inventionbe used` conjcintly, as it is conceivable that at times variouscombinations or sub-combinations here disclosed may be advantageously employed. Manifestly, the invention isnot limited to details of constru-ction here specifically shown for purposes of one illustrative embodimentfand such changes may be made as fall withinthe scope of the following claims without departing from the invention.`

What is claimed is :v e

l. In a unitary printers form storage cabinet, the combination with a'series of 'letter-boards received in the cabinet in vertically aligned locations, conveyor means mounted on the frontof the cabinet, an elevator shelf carried by the con-I veyor means, mating tracks and runners on the cabinet, letter-boards and elevator shelf where y one of theletter-boards selectively may vbe slid from the cabinet onto lsaidelevator shelf, may have its elevation changed, and may be thenslid back into the cabinet, motor operated means housed in the cabinet for actuating said conveyor means to 'move said elevatorshelf, limitswitch mechanism for discontinuing the current to said motor operated means at the upper'and lower limits of travel of said elevator shelf, safetyswitch mechanism for discontinuing the'rcurrent tois'aid motor operated means when a letter-board is partially butnotrwholly out of the cabinet, and an operator controllable` switch for` closing the current to said motorf operated means to move the elevator shelf in the opposite direction from that in which its movement is stopped by said limit switch mechanism. l

2.` In aprinters form storage cabinet, the combination with aseries of letter-boards received in the cabinet in vertically aligned locations, an endless conveyor at each side of the vertical series of letter-boards, `an elevator shelf carried by the conveyors, mating tracks and runners on the cabinet, letter-boards `and elevator shelf whereby one of the letter-boards selectively may be slid from the ,cabinet onto said elevatory shelf, may have its elevation changed, and may be then slid back into the cabinet, motor operated means actuating said conveyors to move said elevator shelf, said mating tracks and runnersincluding rollers uponwhich the lettereboard travels, oneV switch mechanism actuated by said conveyor for controlling the motor operated means.

3. In a printers form storage cabinet, the combination with a series of letter-boardsV received in the cabinetin vertically aligned locations, conveyor meansjan elevatorV shelf carried by the conveyor means, mating tracks and runners on thev cabinet, letter-boards and elevator shelf whereby one of the letter-boards selectively may be slid from the cabinet onto said elevator shelf, may have its elevation changed, and may be then slid back into the cabinet, motorl operated means actuating said conveyor means to move said elevator shelf, said mating tracks and'runners including rollers upon which the letter-board travels, onepair of said rollers being carried by the letter-board and other rollers being carried by the cabinet and elevator shelfy respectively.

4. In a printers form storage cabinet, the combination Witha letter-board movable i'n and out of the cabinet having an outwardly facing chan-- nel member at each side, ofvanelevator shelf mounted on thecabinet at the front thereof having a ypart 4horizontally telescoping with each of said channel members, anti-friction members mounted on said parts on which said letter-board rides, and a wedge member in each of said channel members to take up the play between said channel members and a pair of said anti-friction members when the letter-board is at the outer l limit of its horizontal travel.V

5, In a printers form storage cabinet, the combination with a letter-board movable in and out ofthe cabinet having an outwardly facing channel member at each side, of an elevator shelf mounted on the cabinet at the front thereof having a part horizontally telescoping with each of said channel members,y anti-friction members mounted on said parts on which said letter-board rides, awedge member in each of said channel members to take up -the play between said channel members and a pair of .saidanti-friction members when the letter-board is at the outer limit of its horizontal travel, a roller mounted in each channel member to abut one of the antifriction members on the elevator shelf when the letter-board is at the outer limit of its horizontal travel, a ward on the letter-board, a releasable detent on the elevator shelf ehgageable with said Ward to restrict rearward movement of the letter-board, and a spring biasing said detent to locking engagement with the ward.

6. In a printers form storage cabinet, the combination withr a letter-board movable in and out of the cabinet having an outwardly facing channel member at each side, of an elevator shelf mounted on the cabinet at the front thereof having a part horizontally telescoping with `each of said channelV members, anti-friction members mounted on said parts on which said letter-board rides, and a r'oller mounted in each channel member to abut oneof the anti-friction members on the elevator shelf when the letter-board is at the outer limit of its horizontal travel.

7. In a storage cabinet having a plurality of vertically aligned horizontally movable shelves and a vertically movable elevator shelf mounted on the cabinet adjacent said horizontally movable shelves, the horizontally movable shelves being selectively withdrawable fromfthe cabinet to rest on said elevator shelf, the combination with motor operated means for moving the elevator shelf, of a vertically movable shift bar carried by the cabinet ,adjacent the path of travel of theshelves, a roller carried by the shift bar in the path of each horizontally movable shelf and engageable by a horizontally movable shelf for moving vthe bar vertically whenl one of said horizontally movable shelves is partially but not wholly withdrawn from the cabinet, and a safety switch actuated by movement of said bar for stopping the motor operated means, said bar being returnable by gravity to non-actuating posi-.- tion when said one of said horizontally movable shelves is wholly in or wholly out ofthe cabinet.`

8. In a storage cabinet having a plurality of `vertically aligned horizontally movable shelves and a vertically movable elevator shelf mounted on the cabinet adjacent said horizontally movable shelves, the horizontally movable shelves being selectively withdrawable from the cabinet to rest -on said elevator shelf, the combination with motor operated means for moving the elevator shelf, -of a vertically movable shift bar carried by the cabinet adjacent the path of travel of the shelves, interengaging cam means between each horizontally movable shelf and the shift bar for moving the bar vertically when one of said horizontally movable shelves is partially but not wholly withdrawn from the cabinet, and a safety switch actuated by movement of said bar for stopping the motor operated means, said bar being returnable by gravity to non-actuating position when said one of said horizontally movable shelves is wholly in or wholly out of the cabinet.

9. In a storage cabinet having afplurality of vertically aligned vhorizontally movable shelves and avertically movable elevator shelf mounted on the cabinet adjacent said horizontally movable shelves, the horizontally movable shelves being selectively withdrawable from the cabinet to rest lon said elevator shelf, the combination with driving means for moving the elevator shelf,

of safety means carried by the cabinet adjacent the path of travel of the shelves for stopping the driving means vwhen one of said horizontally movable shelves is partially Vbut not wholly Withdrawn, from the cabinet.

l0. Inma -printerfs'form storage cabinet, the combination with a letter-board movable in and out of the cabinet having an outwardly facing channel memberat each side, of an elevator shelf mounted on the cabinet at the front thereof having a part horizontally telescoping with each of said channel members, anti-friction members mountedV on lsaid parts on which said letter-board rides, a roller mounted in each channel member to abut one of the anti-friction members on the elevator shelf when the letterboard is at the outer limit of its horizontal travel, and releasable interengaging means on the letter-board and elevator .shelf to restrict rearward movement of the letter-board.

11.In a printers form storage cabinet, the combination with a letter-board movable in and out..ofv the cabinet having anV outwardly facing channel member at each side, of an elevator shelf of substantially less area than the letter-board mounted on the cabinet at the front thereof having a part horizontally telescoping with each of said channel members whereby the letter-board is supported on the elevator shelf in cantilever arrangement when the letter-board is y fully withdrawn from the cabinet onto the ele-` vator shelf, with the letter-board projecting beyond the elevator shelf.

l WILLIAM A. DUBOC.

RALPH I. SCHEUER. GARY R. CHRISTENSEN.

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