US1705571A

US1705571A - Progressive roller suspension

Info

Publication number: US1705571A
Application number: US171686A
Authority: US
Inventors: Jones James Richard
Original assignee: Art Metal Construction Co
Current assignee: Art Metal Construction Co
Priority date: 1927-02-28
Filing date: 1927-02-28
Publication date: 1929-03-19
Anticipated expiration: 1946-03-19

Description

J. R. JONES PROGRESSIVE ROLLER SUSPENSION March 19, 1929..

4 ShgB'S-Sheet 1 Filed Feb. 28 1927 n @d QH.

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J. R. JONES PROGRESSIVE ROLLER SUSPENSION March 19, 1929.

Filed Feb. ze. 1927 Y 4 sheets-sneer' J. R. JONES PROGRESSIVE ROLLER sUsPENs'JoN Filed Feb. 28, 19727 4 Sheets-Sheet,

March A19, 1929.

E I I l l l l l i l i l l l l `k l March 19, 1929. .J. R. JONES P'nosnssrv `Ro`LLER SUSPENSION Filed Feb. 28, 1927 l i l l l l l l t/W'e5 RkLawf/one 5' fil:

Patented Mar. 19, 1929.

UNITED STATES PATENT OFFICE..

JAMES RICHARD JONES,` OF JAMESTOWN, NEW YORK., ASSIGNOR TO ART METAL CON- STRUCTION COMPANY, OF` JAMESTOWN, NEW YORK, A CORPORATION OF lNEIN YORK.

PROGRESSIVE ROLLER SUSPENSION.

Application mea February 2s, 19-27.' serial No. 171,686.

The object of this vinvention is to -provide a new and improved form of progressive roller suspension for the drawers of a metal filing cabinet. This and other objects of the invention will be illustrated in the drawings, described in the specification, and pointed out in the/claims at the end thereof.

In the drawings: Figure 1 is a side elevation of the suspension collapsed as it is assembled in the case.

Figure 2 is a side elevation of the suspension extended, the parts being the same as are shown ih- Figure 1, but are shown on a smaller scale. i

end of Figure 1.

Figure 4 is a vertical section on the line 4", 4" of Fig. 1.

Figure 5 is a vertical section on theA line 5", 5" of Fig. 4. This figure shows the partsy at the middle of Figure 1 on an enlarged scale. Figure 6 is a vertical section on the line 6*,6" ofFig.2.

Figure 7 isa vertical section on the line 7", 7"-of Fig. 2.

Figure 7 A is a detail View showing the roller 21 mounted to turn on a swinging eccentric.

Figure 7 B is a detail View showing the roller 21 mounted to turn on a swinging link.

Figure 8 is a detail view of a portion of Fig. 2 indieatedby the arrows 8", 8" the upper flange of the casing channel being partly broken away to expose the parts that would otherwise be concealed thereby.

Figures 3 to 8 inclusive show the parts on twice the scale as they appear in Figure 1.

Figure 9 is a plan view of the blank from which the stationary channel on thecase is formed.

Figure 10 is a plan view of the blank from which the floating member of the suspension is formed.

Figure 11 is a plan View of the blank from which the drawer rail of the suspension is 45 formed. v

Figures 12, 13 and 14 are end views of the parts ormed from the blanks shown in Figures 9, 10 and 11, the parts being viewed from the left hand end of Figures 1 and 3.

50 Figure 15 is a side elevation of the modified form of suspension collapsed as it is assembled in the case. In this ligure the suspension is of a muchheavier construction and )j mediate Figure 3 is an end view of the left hand is made for heavier duty-than thatshown in Figure 1. -Y

Figure 16 isa side elevation of the suspension extended, the parts shown being the s ame as those shown in Figure 15, but are yshown on asmaller scale.

Figure 17 is an end view, the parts being y Viewed from the left hand end of Figure 15.

`Figure 18 is a vertical transverse section taken on the line 18", 18" of` Figure 16.k

FigureV 19 is a vertical transverse section 4 taken on the line 19", 19" of Figure 15.

Figure 20 is a` side elevation of the interparts of Figure 15, the parts being broken away orsectioned on the line 20", 20" of Figure 19.

Figure 21 is a top plan view of that part of Figure 16 indicated by the arrows 21", 21". Figure 22 is an enlarged detail view of that part of the Figure 16 indicated by the arrows 22", 22", the top flange being broken away to expose the parts that would otherwise be concealed thereby.

Figure 23 is a side elevation of the three blanks that form the stationary case channel. Figure 24 is an end view ofthe case channel formed from the blanks shown in Figure 23, the parts being viewed from the left hand end of Figure 15 and as shown in Figure 17. Figure 25 is a plan View of the blank from which the floating member of.the suspension i is formed.

Figure 26 is an end view of the floating member of the suspension formed from the blank shown in Figure 25, the part being viewed from the left hand end of Figure 15 and as shown in Figure 17. Y

Figure 27 is a plan view of the blank from which the drawer rail of the suspension is formed.

Figure 28 is an end view of this drawer rail as viewed from the left'hand end of Fig ure .15'as shown in Figure 17 In the several igures of the drawings, like reference numerals indicate like parts.

In the drawings reference numeral 1 indicates the planview of the blank fromgvl'rhitch the stationary channel 1^ on the case is formed. This channel may be called the case channel. This blank is bent up so as to have a web 2 and

channels

4 and 4 at the top'and bottom thereof respectively. It is also provided with ears, 5, 6 and 7 by which it is suitof the floating suspension member 9^ settles when the drawer is closed or the parts are collapsed. 9A is the floating suspension member that is not fastened to either the drawer or the case, but floats between them, This is shown in Figure 13 and is formed from a blank 9 shown in Figure 10. `It has a web 10 at the back thereof

yand channels

11 and 12 at thetop and bottom thereof. It is alsoA provided with a lug 13 which extends over the drawer rail by which the drawer rail or support is held in place when it is at the outer end of its movement. vIt also prevents the tipping up of the file as it is withdrawn from the case.

TheV drawer -rail is a Z shaped angle 14 formed from the blank 15 shown in- Figure 11. It has a small flange 16 on the bottom thereof. It is also provided with a lug 17 which engages with a suitable stop on the floating member of the suspension by which t-he drawer support is held permanently in place on the floating suspension until it is released as will presently be described.

Neither the case channel 1^ that is stationary on the case nor the drawerrail 14 are provided with rollers. The floating suspension member is provided with four rollers as follows: It isprovided with the

upper rollers

18 and 19 which are of about the same diameter with each other and is providedwith the

lower rollers

20 and 21 which are of the same size 'with each other. The lower rollersl have a larger diameterthan the upper rollers.

The roller 18 is placed immediately above the roller 21 and both are locatedl in about the middle of the slide. The roller 19 is placed at the near end of the slide atthe top, and the roller 20 is laced at the forward end of the slide at the ottom. The roller 2O is preferably a ball bearin g roller, andthe roller 21 is loosely mounted upon its axis `so that it has a loose or lost motion thereon 'of about 3/16 of an linch permitting it to be easily fitted in place and permitting it to easily ac?` commodate itself to the irregularities of the various partsI with which 1t comes m-contact while the drawer ris being moved in or out.4

1n this sense the roller floats on its axis. As shown in Figure 5 this roller 21 sinks into a slot or hole 8 in the track on which it runs when the drawer is closed. This serves to hold the drawer and floating member positively in closed position when the drawer is closed. The Z shaped member or drawer rail 14 is hollowed out on the under side with an inverted depression as shown in Figure 5 to receive the top of the roller 21 when the drawer is closed. This helps to keep the drawer closed. This depression registers with the slot 8 and the roller 21 when the drawer is closed so that as the drawer is pulledl forward from the case,the depression inthe drawer rail will serve to start the intermediate roller 21 from its seat in the slot 8 in the case channel, eliminating any drag or resistancethat would otherwise occur.

` The forward end of the floating suspension 9^ is provided with a latch 22 which is'p'ivotlally mounted inside the upper channel thereofat the forward end. y This latch 22 engages with the lug 17 that is formed on the drawer rail 14 and stops the forwardmovement of therail and the drawer when it has reached the limit of its forward movement. 'lhe latch 22 can be swung up out kof the road of the lug 17 permitting the, rail r14` and the drawer attached thereto to be removed from the floating suspension member and from the case. v

The upper and

lower channels

11 and 12 extend the full length of the floating suspension member except that at the rear the upper channel 11 is cut away and theweb 9 extends upwardly at 23 to form a suitable bearing and back for the roller 19 as shown in Figure 8. This upward extension 23 is provided with a shoulder which engages with a stationary pawl 24 when the floating member is at the limit of its forward movement, namely half way extended from the case channel 1A and its forward movement is arrested thereby. l l

In the blank shown in Figure 10 the latch 22 extends up through the opening 25, the

roller 20 extends down through `the openingl 26, the roller 21 extends down through the slot 27, it being understood that when thc channels y11 and 12 are formed on this blank these openings will be in the horizontal members of the channel to provide for this. It

will also be understood that the roller 19 extends above the floatingsuspension mem-V ber 9A and makes contact with the case channel, and the roller 18 Ais retained within the upper channel of the floating member and does not extend through it and makes contact only with the drawer rail 14.

It'will also be seen that the lower channel 12 at the bottom is wider than the channel 11 Vat the top and the

rollers

20 and 21 while they may be of the same thickness as the

rollers

18 and 19 are spaced outwardly by small rollers placed at the back thereof.

In Figure 7A I have showny the roller 21 mounted to turn on an eccentric 28 that is mounted to swing on a pivot so that theheavier construction of ya roller suspension of this same invention. In this 4figure tl blank 41 is bent to form the Z shaped angle or drawer rail 42. The blank 43 is bent to form the angle 44 and the blank 45 is b'ent to form the Z shaped angle 46. The

angles

42, 44 and 46 are fastened directly to the inside of the case which holds the drawers and the side of the case is therefore a part of the lchannel that is formed by these three angles. It will be understood that the Z shaped angle 46 is a reinforce for the forward part of the angle 44 and is used'to strengthen it over what it would be if formedfrom sheet metal of ordinary thickness. The Z shaped angle 46 carries the flange that completes the channel. This flange extends for about half the length of the angle 44 namely theforward halt' of the length, it being understood that it is not necessary to provide a flange at the rear end of the angle 46 for the roller 51 of the floating member does not go back that far and the floating member is sufliciently guided at the rear by the lower flange on the Z shaped angle 42 which runs the whole length thereof and overhangs and guides the floating member from above. Y

The blank 47 shown in Figure 25 is formed into the channel 48 as shown in Figure 26, this being the floating member. The lower groove of the channel is made wider than the upper groove of the channel for the reason that the

lower rollers

51 and 52 that are carried by the floating channel are thicker or wider than the

upper rollers

53 and 54 carried at the top ofthe floating channel, and are spaced out by collars placed at the back thereof. The slots or recesses 49 and 50 are provided in the bottom groove so that the rollers 5l and 52 can extend therethrough to make contact with the bottom of the groove formed by the

angles

44 and 46.

The

rollers

53 and 54 of the floating channel, the roller 53 being located above the roller 51 both being located in the middle of the channel, the roller 54 being located at the rear end of the channel and the roller 52 being located at the forward end of the channel.

The blank 55 shown in Figure 27 is bent into the Z shaped angle 55A shown in Figure 28. This angle is attached to the drawer and is stationary therewith and isl called the drawer rail. The horizontal part of the angle 56 is reinforced by the plate 57 to take the wear and strain that would otherwise' have to be taken by the thin horizontal member. As shown in Fig. 28, the Z shaped angle is bent up of sheet metal and is reinforced by the plate 57 but it may be rolled all in one piece, the horizontal member being made thicker than the vertical member to give the strength and wearing qualities where it is most needed. i

In the floating suspension member the roller 54 is mounted on a pivot one end of which is fastened in the web of the channel are carried at the'top and the outer end of which is supported by the Z shaped bracket 58 that is fastened to the web of the channel. Over the roller 53 is placed the bracket 59 both ends of which are fastened to the web of the channel of the floating suspension member.' At the forward end of the floating suspension member is carried a slidinglafch 60 which has'a slot 61 therein which engages with the pin 62 on which the latch swings. This latch engages with a block 63 on the Z shaped member 55^ as shown in Figure 21 by which the movement of the drawer is arrested when the suspension has been fully extended. By lifting the latch at its outer end, the block 63 can pass under the latch, and` thedrawer can be removed from the suspension.

The roller 5l is loosely mounted upon the pivot 64 so that it can float up and down as shown in Figure 20. It extends through a slot in the bottom of the channel so that it can rest on the angle 44 that is fastened to the case, and on which it rolls as the floating member moves back and forth. This angle is cut away at 65 immediately under where the roller 51 rests when the drawer is closed so as to form a depression in which the roller will rest and by which the roller and its suspension and drawer will be normally held in place with the drawer closed. When the drawer is opened, the roller will be lifted out of this stationary depression or slot by the moving depression in the drawer rail.

The

rollers

52, 53 and 54 can be either roller bearings or turned rollers, but the roller 51 is always made solid.

The intermediate floating member is made so that it can be removed from the channel on the casing by tilting the upper part of it sideways when the drawer is out. This is because when the Z shaped bar attached to the drawer is not in place over the

rollers

21 or 51 the floating member can drop down on the

roller

21 or 51 so as to disengage the rollers at the top from the overhanging flange of the channel. When the Z shaped bar is in place, the floating member is held up because of the engagement of one or both of the upper rollers therewith and because it in turn engages the

rollers

21 or 51. Then too, the floating member is held in place by the drawer itself which holds the Z shaped member in place.

The floating member 48 is provided with the lug 67 which engages over the drawer rail 55A and holds` it from tilting as the lug 13 engages over the rail 14 as above described.

The case channel is provided with the block 1 drawer and a floatmg channel interposed between the two, said floating channel having two rollers pivotally mounted at the middle thereof one above the other, the lower roller having its pivot near the bottom of the channel, a slot in the bottom of said 'channel through which the lower roller extends to make Contact with the bottom of the case channel, said floating channel having a roller at the upper rear corner which makes contact with the top of the case channel and a roller at the lower front corner which supports the drawer rail, a slot in the case chanv nel centrally thereof adapted to receive said lower roller when the drawer is closed.

2. In a progressive roller suspension, the combination of a case channel, a floating channel moving therein, said suspension having 4 rollers therein, two of said rollers being in the middle of the floating channel one above the other, a third roller being on the lower side ers at the middle of the suspension resting on' said two lower rollers of the floating channel and the lower flange of said rail engaging behind said two lower rollers, the upper flange engaging thefdrawer.

In testimony whereof I affix my signature.

JAMES RICHARD JONES.