US2250895A

US2250895A - Drawer slide for cabinets

Info

Publication number: US2250895A
Application number: US284990A
Authority: US
Inventors: Owen D Premo
Original assignee: Individual
Current assignee: Individual
Priority date: 1939-07-17
Filing date: 1939-07-17
Publication date: 1941-07-29
Anticipated expiration: 1958-07-29

Description

0. D. PREMO DRAWER SLIDE FOR CABINETS July 29, .1941.

Filed July 17, 1939 2 Sheets-Sheet l l E a l a INVENTOR.

A TTORNEYS.

July 29, 1941. o. D. PREMO 2,250,895

DRAWER SLIDE FOR CABINETS Filed July '17, l939 2 Sheets-Sheet 2 0werzD.H enw IN VEN TOR.

ATTORNEYS.

Patented July 29, 1941 UNI TED STATES PAT EN '5 Q FFI C- DRAWER SLIDE son CABINETS Owen 1). Promo, Muskegon' Heights, Mich. Application'July 17', 1939, Serial No. 234,990

2 Claims.

This invention relates to drawer slides especially designed for use in filing cabinets or the like, the primary object of the invention being to provide a drawer slide including ball bearings arranged in such a way that the drawer operating over the slide will move freely, under excessive weight.

An important object of the invention is to provide a drawer slide embodying telescoping sections and ball bearings arranged between the sections, the guides being so constructed that one section may be extended'beyond the other section to the end that the entire drawer space will be available for filing,and' that easy' access'will be had to the files or articles disposed at the rear end of the drawer. Y

Another object of the invention is to provide means whereby them'oveinents of the drawer sections will'be restricted, with respect to each other,

eliminating any possibility of the drawer be-' ing extended too far. I

With the foregoing" and other objects in view,

which will appear as the description proceeds; the

invention resides in the combination and arrangement of parts and. in the details of con-' struction hereinafter described and claimed, it being understood that changes in the precise embodiment of. the invention herein described, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings: 1

Figure'l is a vertical sectional view drawer slide constructed in accordance with the invention. 1

Figure 2 is 'a sectional view taken online 2 Z' of Figure 1. t

Figure 3 is a vertical sectional View through a modified form of the invention. 3 I

Figure 4 is a sectional view through a further modified form of drawer slide.

Figure 5 is a sectional View taken on line of Figure 4.

Figure 6 is a sectional View taken on line 6-6 of Figure 4.

Figure '7 is a perspective view illustrating the extensible sections of the slide.

Figure 8 is a View illustrating a modified form of ball retaining means.

Figure 9 is a sectional view through another form of ball supporting means.

Figure 10 is a vertical sectional View through a still further form of. ball supporting means.

Referring to the drawings in detail, the reference character 5 designates a filing cabinet through a equipped with drawer'slides constructed in ac cordance with the invention.

The reference character 6 designates. the drawer which carries one section of the slide.

The slide comprises an outer channel bar I which is secured to the inner surface or wall of the'cabinet 5, so that theopen side of the channel bar will be disposed inwardly. It will of course be understood that channel bars such as indicated at I, are arranged on opposite sides of the cabinet, and are of lengths to extend substanially the entire width of the cabinet, as shown by Figurel of the drawings.

The

flanges

8 and 9 of the outer channel bar 1 are formed with depressions 16 near the front ends thereof, and are also formed with depressions ll arranged near the inner ends, the depressions being designed to receive the balls l2 to restrict movement of the drawer movable on the slides. The inner section of the slide is indicated by the reference character [3, and this section is secured to the drawer 6, as shown by Figure-2 of the drawings; The flange M formed along one edge of the inner section l3 rests against the outersurface of the'drawer 6, while the lower flange l5 of the inner sectionis secured to the bottom of the drawer 6. The construction of the inner section is such that it provides an elongated housing within the confines of the flanges 8 and f the outer channel bar,

the upper and lower walls of the housing being formed with openings intoWhic'h the balls l5;

extend, the balls being held in position by means of the coiled springs I? in the ends of'which the balls I 6 rest.

The openings at the inner end of the inner section l3 are of diameters to allow the balls l6" supported at the inner ends of the slide, to extend therethrcugh and move intothe depressions H at the rear end of the outer channel bar, when the drawer has been moved inwardly to its limit. The balls resting in the offset portions or depressions I I will provide a temporary holding means to hold the drawer against outward movement under slight pressure. i

When the drawer has been moved outwardly, it will be obvious that the balls l2 will move into the depressions Ill, temporarily holding the drawer against movement to withdraw the drawer from .the cabinet.

In the form of the invention as shown' by Figure 3 of the drawings, the outer channel bar is indicated by the reference character 18, the inner channel bar of the slide being indicated by the reference character I9, the outwardly extended flanges 20 of the channel bar l9 being disposed between the channel bars 2| of the outer channel bar l8.

In this form of the invention the flanges 21 are also provided with depressions 22 for the reception of the balls 23, to provide temporary holding means for the drawer.

An extension drawer slide is shown by sheet 2 of the drawings, and in this form of the invention, the outer channel bar is indicated by the reference character 24, the channel bar being secured to the cabinet so that the open side thereof extends inwardly. The upper and lower flanges of the outer channel bar are formed with

depressions

25 and 26, the depressions 25 being formed adjacent to the inner end of the flanges, while the depressions 26 are formed near the forward ends thereof. Operating between the flanges of the outer channel bar 24, is a channel member 21 which is provided with a plurality of openings 28 through which the balls 29 extend, the openings 28 being of diameters so that only portions of the balls will be permitted to extend through the openings. In connection with the openings, it might be stated that the openings of the channel member 21 adjacent to the inner end of the channel member are of diameters to allow the balls associated therewith, to extend through the openings so that they may engage within the

depressions

25 and 26 when the channel member 21 moves to bring the balls at the inner end of the channel member 21, opposite to the depressions.

As clearly shown by Figure 6 of the drawings, the channel member 21 is provided with inwardly extended parallel flanges 30, between which the channel member 3| operates, the channel member 3| being secured to the drawer, which in the present showing is indicated at 32. The channel member 3| has outwardly extended parallel flanges 32' that cooperate with the flanges 30, in securing the drawer in position. Extending upwardly from the channel member 3|, is a stop 33 which is adapted to engage either the stop 34 or the stop 35 carried by the channel member 21. These stops 34 and 35 lie in the path of travel of the stop 33, and when the drawer is moved outwardly, the stop 33 will move into engagement with the stop 35. Upon further outward movement of the drawer, the channel member 2! will be extended until the innermost balls thereof, engage in the depressions 26, to hold the drawer against further movement.

When the drawer is returned to its closed position, the stop 33 will engage the stop 34 moving the channel bar 2'! to its normal or closed position.

As shown by Figure 8 of the drawings, the balls which are indicated by the reference character 36 are mounted in sockets formed in the bearings 31 that are urged away from each other by means of the spring 38.

In the form of ball support as shown by Figure 9, the members 39 are forced away from each other by means of the rubber block 40.

As shown by Figure 10, the balls which are indicated at 4!, rest in depressions formed in the members 42, and the members 42 are held apart by means of the coiled spring 43 which is mounted between the members 44 that provide a housing for the spring.

While I have shown and described a drawer slide at one side of a drawer, it is to be understood that the structure is duplicated at the opposite side of the drawer so that the drawer will be held in perfect balance at all times.

From the foregoing it will be seen that due to the construction shown and described, the drawer which may be heavy with files, may be readily moved to its outward position, and because of the construction of the extension guide, the entire inner surface of the drawer is available for storing files, at the same time insuring easy access to the files at the inner end of the drawer.

What is claimed is:

1. A device of the class described, comprising an outer stationary channel bar having inwardly extended flanges formed along the longitudinal edges, longitudinally disposed grooves formed in the flanges, said grooves having depressions arranged in spaced relation with respect to each other, longitudinally of the grooves, an inner movable member operating within the stationary channel bar and having spaced flanges, said flanges having openings formed therein, balls mounted within the openings, springs arranged between the balls and normally urging the balls away from each other, said balls operating in the grooves of the flanges of the outer stationary channel member and adapted to move into the depressions restricting movement of the inner movable member with respect to the stationary channel bar.

2. In a device of the character described, an outer stationary channel member having its open side disposed inwardly, the flanges of the channel member having grooves formed longitudinally thereof and disposed in the inner surfaces of the flanges, a movable channel member slidably mounted within the outer channel member, said movable channel member having opposed flanges formed with openings arranged in spaced relation with each other throughout the lengths of the flanges, springs disposed between the flanges of the inner channel member, balls mounted in the ends of the springs and extended through the openings of the flanges of the inner 'chan-' nel member, said balls moving through the grooves of the flanges of the stationary channel member, and said grooves having depressions near the ends thereof into which the balls move, restricting movement of the inner channel member, with respect to the stationary channel member.

OWEN D. PREMO.