US2245752A - Locking mechanism for closure members - Google Patents

Description

June 17, 1941. Q BROWN. JR 2,245,752

LOCKING MECHANISM FOR CLOSURE MEMBERS Filed May 19, 1959 2 Sheets-Sheet 1 INVENTOR.

June 17, 1941- c. L. BROWN. JR 22,2

LOCKING MECHANISM FOR CLOSURE MEMBERS 2 Shets-Sne'et 2 Filed y 19, 1939 Mafia .I\ m 1 a 4 .1 a 5 3 Wm 3. 6J6 1 9 0 2 J 4. 3 J H J F 1 2 INVENTOR. c M 4'.

Patented June 17, 1941 I 2.245.152 LOCKING Mechanism roa cLosrmE MEMBERS Charles L. Brown, In,

to 'Electrolux Corporation, corporation oi Delaware Stamford, Conn, assignor New York, N. Y" a Application May 19, 1939, "Serial No. Z74,567

6 Claims.

My invention relates to locking mechanism ior closure members and more particularly to looking mechanism for a closure member fora vacuum cleaner casing of the type having a unit pulled around on a supporting surface by a hose.

An object of my invention is to provide an improved closure member with a locking mechanism of simple construction which may be readily manufactured and assembled.

A further object of my invention is to provide an improved locking mechanism for a closure member which will withstand the force transmitted through the closure member in moving it about. I

What I consider to be novel and my invent-ion may be better understood by reference to the following specification and appended claims when considered in connection with the accompanying drawings, in which Fig. 1 is a side view of a vacuum cleaner, broken away in part, and embodying my improved closure member;

Fig. 2 is an end view of the vacuum cleaner;

Fig. 3 is an enlarged sectional view taken along the line 3-3 of Fig. 2;

Fig. 4 is an enlarged detailed view in section taken along the line 4-4 of Fig. 3, showing the locking mechanism in a locking position;

Fig. 5 is a view similar to Fig. 4 with the looking mechanism disengaged; and 1 Fig. 6 is a perspective view with the cover of the closure member broken away in part to show the locking mechanism,

Referring to Fig. 1, l0 indicates a vacuum cleaner casing in which a dust separating member H and a fan l2,'driven by an electic motor 13 are located. Dust separating member H is secured in-an opening H of casing by a closure member 15. Closure member 15 is provided with an inlet opening it in which a flexible hose I1 is detachably secured. A cleaning tool 18 is connected to the flexible hose 11 with or without an interposed rigid tubular member 19. Casing I0 is provided with an exhaust opening 26. As bestindicated in Fig. 3, dust separating member II is provided with a ring having an outwardly extending flange 22.. covered by a flexible gasket 23. Flange 22 and gasket 23 rest on a recessed seat 24 provided adjacent the opening 14 of easing l0. Closure member 45 secures dust separating member II in casing 10 and provides a. passage 25 from the inlet opening 16 to the interior of the dust separating member H.

In the operation of the vacuum cleaner, the

casing ll usually is located centrally of the surface being cleaned. 'The area of the surface surrounding the casing 10 is traversed with the cleaning tool 18 When it is desired to clean another area remote irom the casing in, the casing ii! is moved by pulling on the hose H. The force necessary for moving the casing I0 is transmitted from the 'hose 11 to the casing l0, through the closure member 15. The closure member I5 performs the function of transmitting this force for. moving the casing III, in addition to its function of securing the dust separating member l 'l in the casing and permitting its periodical removal for emptying the dust collected therein. Closure member 15 is provided with a back plate 25 with boss receiving openings 21. Two bosses 28 extend forwardly from the casing 10 and from opposite sides of the opening l4 into the boss receiving openings 21 of the plate 26. Two radially extending springs 29 are loosely held in plate 26 in slots 30 formed in the two plates 3|. The inner ends of the-springs 29 enter a central recess 32 in the plate '26. The outer ends of the springs 29 are guided by upstanding ears 33 formed in plates 3| secured to the plate 26. The two springs 29 are arched longitudinally with their greatest height nearer their inner ends. A cam 35 is pivotally secured between plates 3| by a pivot pin 36. Cam 35 is movable in a plane perpendicular to the springs 29 by a handle 31 v extending outwardly throughan opening 38 in a cover 39 secured to plate 26. Cam 35 has beveled edges 35' at each side. A finger recess 40 is provided in cover 39 for grasping handle 31.

When the handle 31 is in the position indicated in Fig. 3, the springs 29 are depressed with their outer ends in engagement with the bosses 28. The ends of springs 29 in engagement with the bosses 28 produce a force holding the closure member 15 in tight engagement with the casing 10, preventing the closure member from being pulled away from the casing III by any force transmitted through the closure member 15, in

moving the casing HI around on its supporting surface. When the handle 31 is moved in a direction away from the closure member 15, cam 35 is rotated on pivot pin 36 in a counter-clockwise direction, looking from the right, releasing the springs 29, and permitting them to assume free positions with the outer ends withdrawn from engagement with the boss 28. With the springs 29 in this position, the closure member l5 may be withdrawn from the casing Ill to permit the removal of the dust separating member with the plates II iormed integrally therewith. 6

The two guide plates 34 are formed with the upstanding ears 33 and secured to the plate 28. The two springs 29 or arched shape are located in position on the plate 2|. The cam I with cured between the plates II by pivot pin 36 The cover 39 which is preferably formed in a stamping operation, to conform in shape with dle connected tosaid cam. to the plate 26 for covering the locking-l5 the general shape of the casing II is securedmechanism.

What I claim is: I l

1. A locking mechanism for a closure'member including an arched spring, a cam engaging the arched portion or said spring and pivoted for 20 movement in a plane perpendicular to said spring, and a handle connected to said cam for mtating said cam to one position depressing said spring and moving said spring outwardly in a radial direction into locking position; 2'

2. A locking mechanism for a closure'member including a plate having boss receiving openings, two radially extending springs arched longitudinally', a cam pivotally connected to said plate at the juncture of said. springs for movement in so a plane pe ndicular to said springs, and a handle connected to said cam for rotating'said cam to a locking position depressing said springs and moving the springs outwardly in a radial direction to engage bosses entering the boss receiv- 35 ing openings of said plate.

8. A locking mechanism for a closure member including a plate, a plurality oi arched resilient members loosely carried by said plate, a cam engaging said resilient members pivotally con 40 nected to said plate for movement in a plane perpendicular to said plate, and a handle connected to said cam for moving said cam to depress said resilient members and move said members outwardly into locking position.

4. A locking mechanism for a closure member including aplate having a central'recess, an arched resilient member loosely carried by said plate having one end located in said recess and the handle 31 formed integrally therewith isse.- 10

the other end positioned adjacent the outer edge of said plate, a cam engaging said member pivotally connected to said plate for movement in a plane perpendicular to said plate, and a han- 5.,A locking mechanism for a closure member including a plate having a central recess, two arched resilient members secured to said plate with'ends located .insaid recess, the outer ends or said members positioned adjacent the peripheryoi said plate, and a cam pivotally secured to said 'plate-betweengsaid members and rotat-' able to deform said members and move the outer ends oi said members into locking position.

6. Alocking mechanism for a closure member 5 including a plate having boss receiving openings and a centrallydisposed recess, two radially extending springs arched longitudinally having theirinner ends seated in said recess and their outer ends positioned adjacent said boss receiving openings, a cam pivotally connected to said plate at the. juncture of said springs 10: movement in a plane perpendicular. to said springs to depress the springs and move their outer ends into engagement with bosses entering said boss receiving openings, and a handle connected to said cam'ior rotating said cam from a position depressing said springs to.a position releasing said springs.

CHARLES L. BROWN, JR.

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