US2487507A

US2487507A - Friction reducing device

Info

Publication number: US2487507A
Application number: US530465A
Authority: US
Inventors: Zalkind Philip
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-10-31
Filing date: 1944-04-11
Publication date: 1949-11-08
Anticipated expiration: 1966-11-08

Description

Nov. 8, 1949 P. ZALKIND FRICTION REDUCING DEVICE i. .r I

5 Sheets-Sheet 1 Original Filed Oct. 31, 1941 Nov. 8, 1949 P. ZALKIND FRICTION REDUCING DEVICE 5 Sheets-Sheet 2 Original Filed Oct. 31, 1941 FIG/1.

INVENTOR.

BY W

- T TORNE Y.

Nov. 8,1949 P. ZALKIND FRICTION REDUCING DEVICE Original Filed Oct. 51, 1941 3 Sheets-Sheet 3 INVENT'OR.

TORNE).

FRICTIQN nnnuoiiid Davies fisiiise i mo,530,465 a, I H

(cigar-77 2 Claims.

"This application is a' division of my application Serial Nof 417,216; filed October 31, 1941, now abandoned, and relates to friction-reducing drawer guide and alignment means in collapsible containers of the drawer and easing type in which a 'amwer is slidable in the open mouth of the casing.

He retofore in the construction and manufactdfe or collapsible drawer and easing combinaeons, particularly collapsible" drawers and casof a fibrous material, one of the mostdifficult elements has been the'arrangement of the members'so that the elementsiof each could be collapsed for" storage or shipping purposes, while at the'same time'these elements might readily be erected by the unskilled user and arranged for cooperation with each other.

One of the most important accomplishments which have' -brought into extensive commercial use collapsible containers troduction of reinforcing df'thca'sing so'arranged that-Fwhen the casing waserectedmne novel means provided for trans mittingloads from the top to the'bottomof a case ing thus prevented distortion ofthe casing itself, superposed ings particularly when carrying aload of casing in a stack. 3

-"s uch afneans are zgiisbnan iothers of 'niy patents,

A type of drawer which may cooperate with this {1,946,516.

type of casing is shown in my Patent No.

"Suspension and anti-friction means have also been developed and are in use in connection with drawers and casings of the collapsible variety for thepurpose of facilitating the movement 'oithe drawer within pension" or friction reducing means are shown in my'Pate'ntsNos;2,233,906 and'2,200,3'19.

addition, strengthening members for "the rear endof the casing, in order to'insure trans-' mission of compressive loads as well'as' the closure of-tl'ie'rear of the casing, Such'f elements are shown in my 'Patent 'No. 2,159,070.

1 Other types of drawer'suspension and alignment means as well. as drawer stop means have also been devised make drawers andcasings of this type commercially successful. Such types of suspensions are shown in my Patents 2,319,283and 21537379.

'In the'present invention 1 have disclosed an improved'd'rawer and casing construction which facilitates the'operation oi the drawer in-th'e casing.

of this'type was'the in members for the ends the casing. Such types of s'us-' have beende'visedi and have served further to Original application Qctober fil, 1941, Serial No. Divided and this; application April 11,

An object of 'the present invention, therefore,

shown in my Patent No.

is thevprovision .of Isuchmeans associated with drawer and'icasin'g combinations which facilitate the alignment of the means, nevertheless,

permits the collapse and erection of the casing by anunskilled user.

1 Elements projecting upwardly from .thessides' arranged to cooperate with the casing and of the drawer are alignment elements of the top of the thus furnish auxiliary alignment.

A further object of the invention is to provide drawer. v

These and many other objects of the present invention will in part be apparent and; where -not apparentpointed out in the followingdescription andfdrawi'ngs, in which:

Figure 1 is -a view in perspective, partially broken away, showing a combination collapsible drawer and casing; using the friction reducing" and alignment means of the present invention? l Figure 2 is an enlarged detail'view of the upper right hand frontcorner of the casing member of Figure'li *Fig'ure' 3 is-a cross-sectional view, taken along lines 3- 3 of Figure 2, looking in'the direction of the arrows: 5 :"Figure 4 is an enlarged view of the rear left hand corner of the drawer, showing theupper alignment means thereon.

Figure 5 is a top View in perspective ofthe' drawer member collapsed for storage or shipment. Figure 6 is a bottom view in perspective showing the drawer member collapsed and ready for shipment.

Referring now to Fig. 1, I have here shown a casing member 2!] having the construction shown in'my Patent Ne'azsaso's, and which may have. the construction; shown in my Patents Nos 2,118,'( l1'1 or 21188315.: Ifhe casing has a top wall 2 1', botto'm*wal1 22, and side walls lza'aiiaza. Each offthefwajlls'l is.hin'gedly connected along the lateral ed ges25,."2 5" to" adjacent wane, and the wallsrnay be folded around the hinge connecme ses in orderto collapsethe casing] fIfhe-hinge lines Z5v may be formed by suitable bend lines or scores in the material or may be, madein any other suitable manner.

q'l'hefopen front 21 ofthe Icasing may be reinforced inithe manner shown in my Patents Nos. 2,118,0111and.2,233,906. Thereinforcementsmay comprise horizontalmetallic channel members 28 whicll' are securely fastened in any suitable drawer in the casing, being. associatedwith the top wall of the casing, which manner over the front edges of the top and bottom walls 2| and 22.

The drawer 40 may have a construction similar to that shown in my Patents Nos. 1,946,516, 2,128,342, 2,152,676, or 2,200,319 and may have a back wall 4| and a metal faced front wall 42. The front wall 42 may be provided with a recess 43 for the mounting of a card, and may also be provided with a handle member 44 which facilitates removal of the drawer from the casing.

The handle member, it will be noted, is recessed into the front of the drawer in order that it will not project when the drawer is collapsed and therefore so that it will not interfere with the flat collapse of the drawer.

It will be noted, from an inspection of Figures 1 and 6, that tongues 45 and 46 are hingedly connected by appropriate fold lines adjacent to the vertical edges of the front 42 and that these tongues 45 and. 46 may be swung normal to the said front and extend parallel to the lateral edges of the bottom wall 47. This is likewise the case with the tongues 48 and 49 which extend from the rear wall 4| of the drawer. The general structure is such as shown in my Patent Number 1,946,516.

The alignment and drawer stop means which may be utilized at the top of the drawer comprises a glider 200 which is pivotally mounted at I on the channel-shaped post 202. The channelshaped post 202 slips over the forward edge of the rear tongues48 and 49 and may be secured thereto adhesively or by rivets or by prongs or by a bent-over lip or in any other suitable manner.

One of the legs of the channel-shaped member 202 is vertically extended at 203 to provide a suitable support for the pin 20I, free of the upper edge 204 of the tongue 48. As may be obvious from a comparison of Figures 1 and 4 with Figures 5 and 6, the mounting of the glider 200 on the post 202 to the tongue 48 does not in any way interfere with the collapsibility of the drawer member 40.

In addition and in order to rigidify the rear end of the drawer so that a perfect alignment may be obtained by a proper positioning of the glider 200, I have provided an angle wire 2l0 having a pair of extending legs 2 and 2 at opposite ends thereof and the continuous connecting portion 212. The connecting portion 2l2 is secured by the channel-shaped reinforcing member 213 to the upper edge of the rear wall 4| of the drawer in such a manner that the connecting portion H2 is freely rotatable within the reinforcement 2|3 while, however, it is captured and securely held against the upper edge of the rear wall 4 I.

Normally and during collapse for shipment or storage the angle wire is rotated so that the legs 1 thereof are out of engagement with the When the drawer has manner heretofore described, the angle wires may be rotated from the position shown by the dotted line 2| I to the posilines of Figure 4 where The legs 2| I of the angle wire, by reason of the fact that they are rigidly interconnected by the continuous portion 2|2 of the angle wire, serve therefore properly to space the tongues 48 and 49 of the rear end of the drawer so that the glide members will be perfectly spaced with respect to and the securement of the post 202' each other in order to cooperate in the aligning of the drawer and to operate properly as a drawer stop.

The glider 200 is preferably integrally stamped from a single sheet of material and comprises a main body portion 220 and an upper flange 22l preferably integrally connected to and bent from the main body portion 200.

The upper flange 221 has a forward projection or hook 222 and a forward abutment 223 is secured to the main body portion 220 of the glide. Also a forwardly projecting finger 224 is integrally connected to the main body portion 220 of the glide200.

The upper surface which the drawer of the container within is to be mounted is provided a with a rail 230 having flanges 23| and 232 (see Figures 2 and 3), risers 234 and 235 and a conn'ecting portion 236. The rails are secured to the upper wall of the casing in any suitable manner, as for instance, by the integrally formed prongs 240 mounted on the flanges thereof which may be folded over within the upper wall of the casing, which prongs may have the form shown in my Patent No. 2,142,167.

Generally the upper rail 230 of the casing may have substantially the same form as the lower the forward end casing are differently formed in order to cooperate with hook 222, abutment 223 and finger 224 of the glide previously described.

The forward end of the flange 232 of each of i the rails is provided with a downwardly extending depression 250 terminating in a rearwardly facing opening 25!, the edge of which, 252, provides an abutment against which the member 223 of the glide may stop.

The glide member, it will be noted, is so mounted on its pin 21' that the greater weight is at the rear of the glide, thus tending to rotate the glide to the position shown in Figure 4. drawer tion of the drawer within the casing.

The angle formed between flange 22l of the glide member and body portion 220 is so arranged that it will fit into the angle formed between the flange 232 and the riser 235 of the rail 230.

Since corresponding gliders on each side register with corresponding portions of the rail of easing against any wobbling thereof or misalignment. In addition, as the drawer is pulled forward within the casing, the hook 222 of the glider enters into the opening 25| while the abutment 223 comes to rest against the rear edge 252 of the opening 25! Since this action occurs on both sides of the drawer, this operates perfectly as a drawer stop member to prevent unintended removal of the drawer.

in the event that it should be desired, however, to completely remove the drawer from the casing, then as the drawer is moved forward and before the hook 222 of each of the gliders enters into the openings 25| of each of the rails in the manner hereindescribed, the user of the drawer may depress the fingers 224, 224 of each of the gliders thus preventing the hook 222 from entering into the opening 25I and thus permitting the drawer to be completely withdrawn.

Since the glider is so arranged that the major portion of its weight is rearwardly of the pin 20! then nothing need be done with respect to the glider when the drawer is inserted into the casing since the drawer will enter quite readily, the glider being in the position shown in Figure 4 when the drawer is completely withdrawn.

Many other embodiments and uses of my invention should now be obvious to those skilled in the art. Accordingly, I prefer to be bound not by the specific disclosures herein but only by the appended claims.

I claim:

1. In a device of the class described, a foldable drawer comprising a side wall and a rear wall formed as a fiat blank and adapted to have a common edge forming a rear corner of said drawer when said drawer is in an erected position, and a stop means carried by said side wall adjacent said rear corner, including a securing means for securing said stop means to said side wall, and a rotatable angle wire having a leg permanently secured to said rear wall but rotative 6 with respect thereto, said securing means having a portion shaped to engage and grip the other leg of said angle wire when said drawer is in set-up position so as to render said rear corner substantially rigid.

2. In a device as set forth in claim 1, wherein said stop means comprises a member pivotally secured to said securing means and having a portion rearward of said pivot of greater weight than the portion forward thereof so as to bias said forward portion upwardly.

PHILIP ZALKIND.

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

UNITED STATES PATENTS