US1285800A - Extension-slide cabinet-drawer. - Google Patents

Description

C. E. RYCROFT.

ExENsloN suce cABlNEr DRAWER.

APPLICATION FILED ,IUNE 21.1918- l ,25,@0 Patented Nov. 26, 1918.

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.UNITED "STATES PA L CHARLES E. BOYCBOFT, OF COVINGTON, KENTUCKY, ASSIGNOR TO THE GLOBE- l WEBNICKE COMPANY, OF NORWOOD, OHIO, A CORPORATION OF OHIO.

EXTENSION-SLIDE CABINET-DRAWER.

Application tiled J une 2'?, 1918. Serial No. 242,271.

An object of the invention is to provide' an extension-slide drawer support embody'- -ing floating roller bearings arranged to distribute the load of the'drawer thereon to insure a free non-binding operation.

Another object is to provide means whereby the rebound of the drawer upon being closed, maybe checked, and also whereby -the drawer, when partially opened, by its rebound or otherwise, may be automatically entirely closed.

A further object is to provide a device of this character, of closely compact design, special attention being given to promoting economy in manufacture by the elimination of screws, studs and of numerous assembling operations.

These and other objects are accomplished by my invention in the manner and by the mechanism described in the following specification and set forth in the appended claims, a preferred embodiment beingl illustrated in the accompanying drawings,^in which Figure 1 is a vertical longitudinal section through a drawer cabinet provided with my improved extension-slide mechanism; and in which the top drawer and extension-slide is removed to clearly show the stationary channel plate; the next three drawers are shown in different operative positions, only the front panel and left drawer rail of eac i drawer being` shown, the bottom drawer. is shown in full, partly broken awayat each end.

Fig. 2 is a, vertical transverse section on In the following description the terms secured to or attached to will be taken to mean` electric spot welded, unless otherwise specifically amplified, for the reason that welding cannot be illustrated in the drawings.

In my present invention, particular attention has been given to economy of manufacture, especially for quantity production, and to this end the present embodiment of the invention provides a structure in which the assembling operations have been reduced to a minimum by the elimination of pivot studs, rivets and screws, except in so far as screws are necessary for attachment to the wood cabinet and drawers.

While l have shown the invention applied to a wood cabinet it is obvious that itis equally adapted for use in connection with cabinets and other articles of furniture of metal or other material. V y

The cabinet 1 comprising the main sup- Sorting structure is subdivided to provide ravver chambers by the partition slats 2 and operating in each chamber is a drawer hav ing a front wall or panel 4 which normally closesthe front of said chamber, side walls 5, 5, rear wall 6, and a bottom wall 7, the

width of the drawer in rear of its front panel being slightly less than'that of the chamber at the same point, so as to accommodate the drawer supporting mechanism between the casing and each drawer side wall.

The mechanism at each side of the drawer being of duplicate construction. the follow ling description will be confined to the singular and limited to an explanation of one drawer unit, the other being identical with the exception of the differences of right and left hand parts.

As most clearly shown in the top drawer chamber, I provide a stationary track member 10 secured to the casing by screws 11. This member is formed of a single sheet lmetal stamping, the upper marginal edge offwhich is bent laterally and downwardly Patented Nom-26, 1918. l

to form a channel providing a track 12 and guide ledge 13. The lower marginal edge is also bent laterally to form a track 14, which at each end is provided with upwardly turned guide ledges 1516. The track 14 is slightly raised at 17 to form from this point a short rearwardly inclined portion 18 and a gradual forwardly inclined portion 19. y

Arranged to travel in the stationary track member 10, is an extension-slide member 20 of 'sheet metal. having `its lower marginal edge bent laterally to form a Vshelf 21,'and

the major forward portion of its upper marginal edge bent laterally to form a track 22. Secured to the forward portion of the slide member 20, adjacent the shelf 21, is a lroller retaining plate 23, forming with said member, a. roller receiving channel in which a roller 24 is adapted to travel, the roller 2-1 is provided with a hub or boss 25, and the plate 23 has its upper edge turned inwardly to retain said roller within its channel, (see Fig. 2). rlQhe roller 24 travels on the shelf 21 of the slide member 20 and supports the forward end of the drawer upon the slide member by engagement with the under side of a horizontal drawer rail 26, which has an upturned flange portion attached to the drawer side wall 5 by screws 27 and a downturned marginal lip 28 extending closely adjacent the slide member 20 to limit the sidewise play of the drawer.

A main drawer supporting roller 30 is retained in a pocket formed by. the slide member 2O and a clevis strap 31 fixed to said slide member, providing an upper pocket throat of lesser longitudinal length than the `diameter of the roller 30 to prevent the roller being pushed upwardly out of its re taining pocket. The roller 30 projects downwardly through an opening cut in the shelf 21 of the'slide member and engages the track 14, said opening also being of lesser length than the diameter of the roller to retain the roller within its pocket while at the same time allowing a slight vertical play of the roller independent of the slide member 20.

This Vroller 30 also engages the lower surface ofthe drawer rail 26. and in its normal position, when the drawer is closed, is immediately in rear of the inclined portion 18 of the stationary track 14. Attached to the upper rear portion oflthe slide member is a U-shaped channel plate 35 having closed ends and a longitudinal slot 37 cut in the forward portion of its lower wall, the' rear portion thereof forming a track 36. A floating roller 38 travels freely in the rear portion of the channel formed by this plate 35, said roller engaging the track 36 thereof and the track l2 of the stationary track member 10. A floating roller 39 travels within the forward portion of said channel and projects through the slot 37, it being retained against dropping through said slot by a hub or boss 40. The roller 39 is engaged by the drawer rail 26 and in turn engages the, under surface of the track 22 of the slide member 20, thereby serving as a means for supporting the slide member upon the drawer rail.

An inclined flange 41 is secured to the forward end of the slide member 20 and serves as a guide for initially inserting the drawer into the cabinet ,and also as a stop to limit an upward tilting of the drawer relative to the slide member.

A leaf spring stop member 45 is fixed to the shelf 21 of the slide member 2O and projects laterally so as to alternately engage the opposin edges of the guide ledges l5, 16, of the p'ate l0 to limit the travel of the slide member. To remove the slide member from the cabinet, the spring member 45 is raised to clear the guide ledge 15. To limit the movements of the drawer, I provide a rubber covered bumper 50 which is secured to the 75 cabinet by screws, as shown, and which is adapted to be alternately engaged by a pair of opposing stop plates 51, 52, secured to the bottom wall 7 f'of the drawer.

rThe main roller 30 is located in rear of the center of the drawer and the drawer rail 26, using said roller as a pivot presses upwardly on the roller 39, which by its engagement with the track 22 exerts an upward pressure upon the rear portion of the slide member 20. This upward pressure, through the track 36, holds the roller 38 in contact with the stationary track 12 and acting against said roller as a pivot, exerts an upward pressure on the forward end of the slide member to contact the forward roller 24 with the drawer rail.

it may be stated that the roller 30 is the main load roller, as it at all times bears the major portion of the drawer load and the opposite rollers 24: and 38 may be termed secondary load rollers, they serving to keep the drawer level by preventing the drawer from tilting.

As previously stated the normal position of the main roller 30 is just in rear of the inclined portion 18 of the stationary track le, ri`his inclined track portion causes the drawer to automatically close from al partially open position or to return to closed position after its rebound, gravity forcing the roller 30 and supported parts rearwardly down said inclined track portion. The gradually inclined portion 19 assists in the opening movement of the drawer and to a il@ degree checks a forceful closing thereof.

it will be noted that the secondary load rollers 24, 38, are normally positioned at the end of their respective tracks closest to the main load roller 30, and as the drawer is withdrawn they become further separated, providing increasing and compensating stability of the mechanism as the overhanging load of the withdrawn drawer increases.

The vertical free play of the roller 30, relative to the slide member 2O compensates Jfor the elevation thereof 4when riding over the raised portion 17 of the track le and allows a free compensating movement of the slide member 20 to keep the drawer in an even. 1125 horizontal plane.

Having described my invention, l claim 1. ln a device of the class described, a casing having a stationary track, an extensionslide member, a drawer having a horizontal rail and-a series of floating rollers supporting the drawer u on the stationary track and the slide mem er upon the drawer rail.

2. In a device of the class described, a casing having a stationary track, an extensionslide member, a drawer having a horizontal rail, a drawer supporting element engaging the track, a slide member supporting element engaging the drawer rail, and a pair of compensating elements traveling in the same direction relative to the stationary track and in opposite directions, relative to the drawer supporting element.

3. In a device of the class described, a casing having a stationary track formed with an incline, an extension-slide member, a drawer having a horizontal rail, a main 'load roller engaging the track normally in rear of the track incline and supporting the drawer, means supporting the slide member upon the drawer rail, and a pair of compensating elements mounted to travel upon the slide member in opposite directions from the main load roller and engaging the drawer rail and stationary track respectively.

4. In a device of the class described, a casing havin a stationary track, an extensionslide mem er, a drawer having a horizontal rail, means supporting the slide member upon the drawer ra1l, a main load roller engaging the track and the drawer rail, and a pair of compensating oating rollers adapted to be moved in opposite directions relative to the main load roller to stabilize the drawer.

5. In a device of the class described, a casing having a drawer chamber, a drawer adapted to travel therein and having a horizent-al rail, a stationary track member having an upper track and a lower track provided with an inclined portion, an extension-slide member intermediate said tracks, a main load roller normally engaging the lower track in rear of the inclined portion thereof, said roller being loosely retained on the slide member and in engagement with the drawer rail, a floating roller freely movable on the slide member and supporting said slide member on the drawer rail, and a pair of secondary load rollers freely movable on the slide member, one thereof engaging the drawer rail and the other engaging the upper track of the stationary track member.

6. In a device of' the class described, a casing having a drawer chamber, a drawer adapted to travel therein and having a drawer rail, a stationary track member, an extension-slide member having a plurality of tracks, a main load roller loosely carried by the slide member and engaging the stationary track member and the drawer rail to support the drawer on the stationary track member, a floating roller engaging the slide member and drawer rail to support the slide member on the drawer rail, and a air of floating compensating rollers operating in opposite directions relative to the main load roller, one cooperating with the slide member and drawer rail and the other with the slide member and stationary track member.

In witness whereof, I hereunto subscribe my name, as attested by the two subscribing witnesses.

CHARLES E. ROYCROFT. Witnesses: D. DRACHENBERG,

L. A. BECK.

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