US1884012A - Vacuum cleaner - Google Patents

Description

Oct. 25, 1932. N, LQSEY 1,884,012

VACUUM CLEANER Filed 0613. 30, 1925 IN VEN TOR.

ATTORNEYS.

Patented Oct. 25, 1932 UNITED STATES NORTH 11. LOSEY, or mom, omo

vacuum CLEANER Application filed October 30, 1826. Serial No. 145,216.

This invention relates to vacuum cleaners,

The general purpose of the invention'is to provide a vacuum cleaner having a nozzle adjustable as to height and improved means for adjusting the height of the nozzle.

Particularly the invention has for its object the provision of a pivotal mounting for the nozzle and means operable from the handle of the vacuum cleaner for adjusting the o nozzle on its mounting for use on floor coverings of various thicknesses.

The foregoin and other objects are obtained by the evice illustrated in the accompanying drawing and described below.

15 It is to be understood that the invention is not limited to the specific form thereof shown and described.

Of the accompanying drawing,

Figure 1 is a part side elevation of a vac- 2o uum cleaner embodying the invention;

Figure 2 is a part rear elevation thereof; Figure 3 is a detail plan of the adjustable supporting arm for the rear of the vacuum cleaner; and

Figure 4 is a detail elevation of the grip portion of the operating handle.

Referring to the drawing, represents the casing of a vacuum cleaner containing the usual motor and fan (not shown) and 30 having the suction nozzle 11 thereon. The

housing 10 is pivotally mounted at its forward end on a spindle 12 on which are journaled supporting rollers 13, 13., Pivoted on casing 10 at 14, 14 is an arm 15 extending rearwardly and supported at its rear end on a caster 16. A sprin 17 normally tends to swing arm 15 upwardly. Arm 15 is arranged to provide a su port on which the rear of casing 10 is vertically adjustable to adjust the height of nozzle 11 with respect to the level over which the cleaner is operated. To this end a cam ring 18 is journaled on casing 10, being held against shifting axially thereon by a shoulder 19 and a removable retaining ring 20.

Cam ring 18 is provided with a cam ortion 18 between stops 18 and 18of grad ually increasing diameter from one stop to the other. 1

For operating cam ring 18, the usual yoke 21 of the handle 22 of the cleaner is pivoted thereon at 23, 23 whereby, by rotation of handle 22, the nozzle '11 may be adjusted to the desired height. The handle 22 is preferably so pivoted on ring 18 that it can be extended straight upwardly when the ring is positioned substantially at the center of its range of adjustment at which the nozzle 11 is positioned properly for normal operation on the average floor covering. To facilitate rotation of handle 22, a yoke portion 24 is formed thereon provided with a gripping bar 25 extending transversely thereof. The cable 26 for the motor preferably extends through handle 22 and one arm of yoke 24 to a switch 27, arranged on one end of bar 25. The yoke 25 is separable from the shank of handle 22 as indicated at 28 to facilitate wiring of the device.

1 n operation, the operator rotates the handle 22 in one direction or the other by bar 25 to rotate cam ring 18 in one direction or the other, which, acting on arm 15, raises or lowers the rear of c sin 10 and lowers or raises nozzle 11 to the desired height above the level on which the cleaner is operating.

Modifications of the invention may be resorted to without departing from the spirit thereof or the scope of the appended claims.

What is claimed is:

1. A vacuum cleaner comprising a casing having a nozzle projecting forwardly ofthe casing, and means for supporting the casing including a spindle on which the forward portion of the casing is pivoted, rollers on the spindle, an arm pivoted at one end on the casing and extending rearwardly thereof, means yieldingly urging said arm toward the casing, a caster supporting the free end of said arm, and a cam member journaled on no the rear portion of the casing and rotatable thereabout transversely of said arm, and having a cam portion engaging said arm and adapted to move the latter relatively of the casing, said cam portion being provided with end abutments adapted to limit the movement of the cam transversely of said arm, said vacuum cleaner having an operating handle connected thereto through the cam and adapted to rotate the cam on the casing by rotation of the handle on its own longitudinal axis to raise or lower the nozzle.

2. A vacuum cleaner comprising a casing having a nozzle projecting forwardly of the casing, and means for supporting the easing including a spindle on which the forward portion of thecasing is pivoted, rollers on the spindle, an arm pivoted on the casing extending rearwardly, a roller supporting the free end of said arm and a cam member journaled on the rear portion of the casing and rotatable thereabout transversely of said arm, and having a cam portion riding on said arm adapted to move the latter relatively of said casing said vacuum cleaner having an operating handle pivotally connected to the cam and adapted to rotate the cam on the casing by rotation of the handle about its own longitudinal axis to raise or lower the nozzle.

3. In a vacuum cleaner, the combination with front and rear spaced supports and a casing having a forwardly projecting nozzle thereon and pivoted on the front support, of means for raising or lowering the casing on the rearsupport to lower or raise the nozzle, said means comprising a rotatable cam member mounted on the casing operatively engaging the rear support and an operating handle for the vacuum cleaner connected to the cam member movable angularly relatively thereto arranged to actuate the cam member by rotation of the handle about its own longitudinal axis.

4. In a vacuum cleaner, the combination.

with front and rear spaced supports and a casing carried thereby and pivoted on one support, said casing having a nozzle projecting beyond the forward support, of means for raising or lowering the casing on the other support to lower or raise the nozzle, said means comprising an angularly movable cam member mounted on the casing in operative engagement with said other support and an operating handle for the vacuum cleaner pivotally connected to said cam member to actuate the same when said handle is rotated on its own longitudinal axis.

NORTH H. LOSEY.

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