US1560887A - Suspension - Google Patents

Description

Nov. 10, 1925 I w. w. WATSON SUSPENSION Filed Sept. 11, 1922 Patented Nov. 10,-- 1925.

wxnmim w..wA'rsoN, or JAMESTOWN, NEW Yonx.

SUSPENSION.

Application filed September 11, 1922. Serial No. 587,403.

To ell whom it may concern:

Be it known that I, WILLIAM W. WATSON,

a citizen of the United States, residing at the city of Jamestown, in the county of- Chautauqua and State of New York, have invented certain new and useful -Improvements in Suspensions, of which the-follow ing, taken in connection with the accompanying drawings, is a specification.

This invention relates to an improvement in suspensions, and more particularly to that type of extensible suspension. used in connection with'the'drawers of a cabinet or other article of furniture to support 'the drawers in any position.

One object of this invention is to provide a suspension which moves progressively with relation to the drawer which rests upon it, in other words, the suspension moves approximately one half as far as. the

drawer so that in all positions the inner half of the portion of the drawer projecting from the cabinet is supported by the suspension. This results from the provision of rollers 'mounted. upon the suspension travelling over the cabinet side rails and imparting a movement of translation to the suspension.

Another object is to provide a suspension having sets of rollers between whic the drawer guides are inserted certain of said rollers being so mounted that the drawer guides regardless of their thickness are firmly gripped.

A further object of this invention is to provide a suspension which will form a rigid support for the drawer when partly or fully extended, said suspension being equipped with rollers which carry the drawer and certain of which are lowered when the drawer is closed, allowing the rear end of the suspension to bear directly against the side rails of the cabinet, thus increasing a resistance-to any tendency of the drawer to slide open.

A still further object of this invention is to provide in each of the side plates by which the suspension issupported, a transverse depression which receives one of the rollers on the suspension when the drawer is fully closed.

Other objects will appear from a consid-.

' eration of the following description of the.

drawing which forms a part thereof, and in which sionembodying this invention.

. Figurev 2 is a perspective view of a drawer intended to be carried by said suspension.

Figure 3 is a transverse cross section of the drawer and suspension assembled in a vertical cabinet.

Figure 4 is a longitudinal section taken along the line 44 of Fig. 3 showing the drawer closed.

Figure 5 is a view similar to Fig. 4 with the drawer fully extended.

Figure 6 is a corresponding view with the drawer partly open, andv Figures 7 and. 8 are detail cross sections. taken along the lines 77 and 88 of Fig. 4.

Referring to the drawings, the reference numeral 10 is used to designate a suspension which is mounted upon side rails 11 fixed in a cabinet 12 and which carries a drawer 13. The suspension 10 comprises side frames 14 connected by front and rear cross bars 15 and 16, which .rest on and are rigidly secured to the lower horizontal flanges 17'of the frames 14. Each side frame 14 has in addition to the flanges 17 an intermediate horizontal section 18 connected to the flanges 17 by a vertical section 19. From the outer edge of the section 18 projects a vertical flange 20.

Rotatably mounted on studs21, 21 pro-- transversely of the stud. Figures 7 and 8 Figure 1 is a perspective View of a suspenthat the roller has a limited movement of the drawing illustrate the relation of the v rollers and studs and the movement of the roller 23 transversely of the stud 21. Re-

ferring to those figures, it will be noted that.

the shank of the stud has a smaller diameter than the central opening through the roller and-since the head of the stud is smaller than the depression, the roller can shift transversely of the stud until the shank rests on the lower face of the central opening or the lower side of the depression wall a of the roller 23 bears against the head of the stud 21 4 The purposes of this construction w1ll be disclosed hereinbelow. The rollers 22 and 21. I The relation of the roller 26 to the stud 21 is therefore similar to that between the roller 22 and the stud 21, as shown in Fig. 7

The side rails 11 are rigidly secured to the cabinet 12, each having a horizontal flange 30 on which the rollers 22 and 23 run, and at the rear end a second'horizontal flange 31 above and parallel to the flange 30' against the underside of which the rear roller 24 I bears. The rolle1's'24 and flanges 31 ,co-act in the usual way to prevent the front end of suspension from tipping down. The portion 28 of the horizontal section .18 of the suspension back ofthe rollers 23 and 26 extends over the flanges 31 and is. normally out of'contact therewith.

Formed in the flange 30 of each plate 11 is a depression 32 in which the rollers 23, due to their movementon their shafts rest when the drawer is closed. Since up to that time the suspension 10 has been supported by the rollers 22 and 23, the result of this will be to cause the suspension to tilt on the rollers 22, lowering the rollers 24 out of contact with the side rail flanges 31.

If the depressions 32 are of suflicient depth the rollers 24 will rest on the flanges 30 and at the same time the end of the portion 28 will rest upon the upper face of. the Thus any tendency of thedraws to slide open will be impeded by the inertia both of the rollers 23 due to their flange 31.

position in the depressions 32 and of the portions 28'of the suspension due to their contact with theflanges-31.

The drawer 13 is of the usual construction having a horizontally flanged guide 40 "along each side which,..when the parts are assembled, is inserted between the rollers 23 and 26. Since the rollers 23 are capable of a transverse movement on their studs 21 the guides will be gripped firmly regardless rear plates 51 and the side rails 11.

of the thickness of the material from which they are made. At the bottom of the drawer is provided a catch or blister 41'which engages the .front cross bar 15 of the suspension 10 when the drawer is fully extended as in Figure 5. Y

' At the front and rearof the cabinet 12 are pilasters 50 which carry the side and The stops 27 on the suspension strike the front pilasters 50 when the drawer is fully extended. p

I WVhen assembling the suspension is first mounted on the rails 11. The drawer 13 is 'now positioned, upon the-suspension, the guides 40 being inserted between the rollers '23 and 26 with the catch 41 behind the cross bar 15. Y i i Considering the drawer to be closed as in Fig. 4, the following will occur as it is opened. The first" pull causes the rollers 22 and 23 to rotate on their studs, and since they are mounted on the suspension, they move longitudinally, the rollers 23 leaving the depressions 32' and raising the rear end of the suspension out of contactwith the flanges 31 of the rails. When the drawer is fully extended as in Fig. 5, the catch 41 strikes the cross bar 15 of the suspension, and at the same time the stops 27 strike, the front pilasters 50. Since the guides 40 are firmly gripped by the rollers 23 and 26 and v the rollers 23 are held bythe weight'of the drawer against the side rails 11 as the drawer is opened the guides will cause the rollers 23 to rotate on their studs 21". The

rotation of the rollers 23 on the studs will, of course, result in a movement of translation whichis transmitted by the studs 21 to the suspension 10 in which they are fixed.

This movement of the suspension will be continuous and progressive as the drawer is opened but by reason of the fact that the studs 21* are approximately half way between the rails 11 and the guides 40 the suspension will move only half as far "as the drawer.

While one embodiment only has been shown. and described, I am not to be limited thereto since other embodiments may be made without departing from the spirit and scope of this invention as following claims.

Having thus set forth niy invention, what I claim 'as new and for, whichI desire the protection of Letters Patent is:

1. In a cabinet having side rails provided with upper and lower flanges, a suspension mounted upon said rails, a drawer supported by said suspensionfa pair of rollers on said suspension,other rollers on said suspension certain of which bearing normally against the lower faces of. saidupper flanges while set forth in the 1 a portion .of said suspension extends above and out of contact with said flanges, depressions in the lower flanges of said side rails which said first named pair of rollers enters when the drawer is closed, whereby the extending part of said suspension will rest upon said upper flanges, a

2. In a cabinet having side rails provided with upper and lower flanges, a suspension mounted on said rails, a drawer supported by said suspension, front and intermediate sets of rollers on said suspension bearing on said lower flanges, the intermediate set of rollers being movable transverselyof said suspension, rear rollers on said sus ension normally bearing against the lower acesof said upper flanges while a part of said suspension lies above said flanges, depressions in the lower flanges of said side rails which said intermediate rollers enter when the drawer is closed, whereby the suspension tilts on the front rollers, the rear rollers move away from the lower faces of said upper flanges and the part of said suspension above said upper flanges rests thereon.

3. A drawer suspension comprising side frames, each consisting of a vertical flange, a vertical section and a horizontal section connecting said vertical flange and vertical section, rollers mounted on the outer faces of said vertical sections, slots in said horizontal sections through which said rollers project, rollers mounted on the inner faces of said vertical flanges above and resting upon certain of said first named rollers, and cross.

bars connecting said side frames.

In testimony whereof I have aflixed my signature.

WILLIAM w. WATSON.

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