US2051833A - Support for hair drier hoods or the like - Google Patents

Description

Aug. 25, 1936. M. EHRLICH SUPPORT FOR HAIR DRIER HOODS OR THE LIKE Filed June 13, 1934 INVENTOR Marimilzlm Ehrlich M ORNEY ence to the accompanying drawing, forming part Patented 25, 1936 SUPPORT J. P. Fischer Inc., tion of New York son. rum DRIER noons on run mm.

Maximilian Ehrlich, Broo klyn, N. Y., assignor to New York, N. Y., a corpora- Application June 13, 1934, Serial No. 730,501

s Claims. (01. 248-161) This invention relates to hair driers or the like of the type that are adapted to rest onthe floor and which are provided with a base, a telescopic post supported by the base and a hood'pivotally supported at the top of the telescopic post.

This invention relates particularlyto such devices where the hood is adjustably elevated and adjustably tilted, and is provided with means to retain the hood in the desired elevated position and with means to retain the hood in the desired tilted position.

The invention resides in the novel arrangement and combination of the elevating and tilting means whereby simple manipulation of the parts affects the desired elevation and angular positioning of the hood.

One of the main objects of the invention is to provide a device of this character with means for counterbalancing the weight of the hood and its associated parts whereby the vertical positioning of the hood is facilitated. This means also is adapted to serve as a counterbalance against over tilting of the hood whereby the tilt or angular positioning of the hood is also facilitated.

' Another important object of the invention is to provide in a device of this character such novel counterbalancing means without destroying the esthetic appearance of the device which therefore has no unsightly visible parts.

A further object of the invention is to provide means whereby the adjustments may be quickly and accurately made.

A still further object of the invention is to provide such counterbalancing means that are simple, rugged and unlikely to get out of order.

Other objects and advantages will appear after reading the following description having referof this disclosure, and particularly pointed out in the claims hereto appended.

It is well known that devices of this character are apt to tip over when being adjusted for application. This is due mainly to the cumbersome and insecure method of adjusting the parts to their proper elevation and angulation of the hood. In such devices prior to this invention where one frictional or other clamping means have been employed to hold the hood in the desired vertical position and another frictional or other clamping means is employed to hold the hood in a desired tilted position, independent counterbalancing means have been employed to bear the weight of the parts when one or the other of the clamps were loosened. In other words, heretofore a spring was used as a counterbalance against the weight of the hood plus the weight of the upper /telescopic member and the associated parts when the vertical adjustment clamp was loosened. Likewise, a separatespring was employed in the prior art to resist or prevent the too sudden tilting 5 of the hood when the tilt adjustment clamp was loosened. Some of the devices in the prior art have employed no such latter mentioned restraining means at all and depended upon a frictional clamp so tight as to render the. tilting adjustment diflicultwhen the clamp wasnot loosened during adjustment, thus allowing the hood to fallunrestrained if-and when the such tilting clamp was loosened.

The tiltable hood in these devices swing freely on their pivots when the tilting clamp is loosened, because the center of gravity of the hood is usually disposed to one side of its supporting pivot. When the clamping means are loosened the entire hood if unrestrained, swings, under the'influence of its ofiset center of gravity, with such force .as

to cause the entire device -to tip on its base. In

many. cases when the tilting clamp is loosened and the hood swings unrestrained and the device does not tip over entirely, the hood in swinging sharply downwardly on its pivot often strikes the person receiving or about to receive treatment from the device.

The invention therefore contemplates a device in which the-above mentioned danger during adjustment is obviated and which is provided with adjusting means for proper application with a minimum of effort and maximum speed.

In carrying out the invention it is proposed to employ a single spring as a. counterbalancing means for supporting the weight of the hood and the associated parts. This spring is also adapted to bear the overbalanced weight of the hood when its center of gravity is oflset and is further adapted to provide frictional pressure against the hood to retain the hood in its desired tilted position.

In the drawing:

Figure 1 is a perspective view of a device embodying the invention.

Figure 2 is a fragmentary detail of the upper portion thereof, including the upper portion of the supporting post and the tiltablehood.

Figure 3 is a fragmentary vertical longitudinal section of the device with certain parts broken away and other parts omitted.

Figure 4 is a section taken on the line 4-4 of Figure 3. v p

Refen'ing to Figure 1, the numeral III designates a'base for a drier or like device, said base supporting an upright sleeve portion ll extending upwardly from the base, said base having castors l2 for aiding in the transfer of the device. The upright sleeve Ii is adapted to frictionally and telescopically receive a hollow post i3. This hollow post i3 is adapted to carry at its upper end a hood I. This hollow sleeve H and post l3 form a vertical extensible and contractible post for adjustably supporting the hood in the desired vertical position.

The post i3 is provided at its upper end with a plug l5 which is secured to the post l3 by a screw it. The plug I5 is provided with a pivot ear l1 adapted to receive a pivot pin l8 which passes through said ear and through a cam shaped base member 19 fixed to and extending downward from the hood. The member I9, substantially U- shaped in cross section is suitably secured to the lower or underside of the hood and is adapted to embrace the pivot ear l1. A pin I8 is adapted to pass through the ear l1 of the member l5 and the walls of the U shaped member IS. The forward and underneath edge of these parallel walls are suitably curved as at 20 to properly coact frictionally with a spring pressed member 29 in maintaining the angular position of the hood, as will be more fully described later.

The member IS on one side thereof is adapted to extend below the pivot It as at I90 to abut against the member l5, thereby providing a stop against the counter-clockwise movement of the hood as seen in Figures 1, 2 and 3. The stop portioneooperates with a suitable'shoulder 2| on the plug l5.

Inside the hood there is usually a heat or actinic ray producing device with or without a blower resulting in the movement of currents of warm air.

The pivot of the hood is so arranged that the center of gravity of the hood is slightly to the right of the vertical center of the post when the hood is positioned as indicated in Figure 3, thereby causing the hood to rest against the shoulder 2| in its normal upright position, as shown in this figure or in full lines in Figure 2. The center of gravity of the hood may however be shifted to the left of the pivot when the hood is rotated in a counter-clockwise position as shown in dot and dash lines in Figure 2. In this position the hood has a tendency to rotate further unless some means is provided to retard or react to this tendency. This means will be more fully described.

A slidabie sleeve surrounds the post ii at its upper end. Slots 28 are provided in the post l3 to permit a bolt 21 which is secured to the sleeve 25, to pass diametrically through the post l3 to permit movement of the sleeve 25 on the post IS. The bolt 21 is secured to the sleeve 25 by means of a nut 28 at one end thereof. The slot allows clearance for the vertical movement of the bolt when the sleeve 25 is raised or lowered with respect to the post l3 when the hood is tilted.

Interposed between the nut and sleeve 25 and on the outside of the latter is a member 29whlch extends upwardly and into frictional contactin gigagment with the curved edge 20 of the mem- An -expansion spring 30 is housed within the sleeve II and extends upwardly within the postl3. The spring is confined between the base it and the bolt 21 and is adapted to counteract part to the combined weight of the hood and post i3, when the hood is in any position. The friction between the post. and sleeve together with the counteracting effect of the spring is suflicient to maintain the hood in any vertical position desired.

When it is desired to prevent elevation of the hood, a hand screw 2i may be provided in the sleeve Ii to look the post ii to the sleeve II.

vation. The hood may however be tilted but not raised or lowered.

when it is desired to tilt the hood a knob 22 for that purpose is provided at the closed end of the hood. The knob is grasped and the hood may be swung about its pivot it in a counter-clockwise direction as indicated in Figure 2. In so doing the sleeve 25 is forced downwardly. This is due to the curved edges 20 which contact with and move the member 29, and the sleeve 2! to which it is secured, downwardly. The sleeve in moving downwardly carries with it the bolt 21 which, in resting against the spring 20, causes the compression of the spring. The reaction of the spring effects a restraining force against the counter-clockwise rotation of the hood.

It would be noted by the clearance between the top of the slot 28 and the pin 21 that the post I! never touches the pin 21. The post It is hung from the pivot ii. The weight of the hood, the post, and the parts coacting therewith (28 and ii) are counteracted by the spring 30. Only the friction between the sleeve II and the post I: need be overcome in order to raise or lower the hood.

The curvature 20' is of such shape as to provide sufficient friction which, together with the restraining force of the spring effects an even counterbalancing against rotation of the hood throughout its entire tilting range. It will therefore be noted that the spring 30 assists in cart!- ing the weight of the entire hood and post l3 and also acts to counteract the tilting of the hood.

It is clear from the drawing that the spring 30 is compressed when the hood is tilted, thereby offering counter-balance against such tilting of the hood. It will also be seen from the drawing that in tilting the hood on the pivot IS a rubbing takes place between the curved edges 20 of the member i9 and the member 29. The steeper the curvature 20 the greater the friction between these parts. In order, however, to provide a desired amount of friction during tilting of the hoodthecurvatiure20isofsuchshapeastoprovide the desired friction between these parts. To illustrate the eifect of these parts, let it be assumed that the post I! and the sleeve Ii are fixed together and the hood tilted as indicated in dot and dash lines in Figure 2. The, spring 2| pressing up against the bolt 21 urges the memberv ber it. The hood thereforewill not tilt under the influence of the spring but will be maintained frictlonally in the adjusted position. The spring provides the pressure to bring about friction be- 76 tween the parts l9 and 20, which provides resistance against the overtilting or too sudden tilting in a counter-clockwise direction of the hood. It is obvious that it this spring were not present the hood would swing sharply in a counter-clockwise direction when its center of gravity was disposed to the left of the vertical center of the pivot. This curvature 20 has been found to maintain the hood in any of its tilted positions and provides the proper frictional requirements against unwarranted tilting.

Having thus described one embodiment of the invention it is understood that there are modifications which may be resorted to without digressing from the scope of the invention as pointed out in the claims.

What is claimed, is:-

1. In a device of the character described, a base, and a tiltable hood, telescopic means between the base and the hood, a spring in said telescopic means for counteracting the weight of the hood, and means disposed between the spring and the hood for compressing the spring when the hood is tilted.

2. In a device of the character described, a base, a tiltable hood, telescopic means between the base and the hood for adjusting the hood vertically, a spring in said telescopic means for counteracting the weight of the hood, means for preventing the tilting of the hood in one direction, and means disposed between the spring and the hood for compressing the spring when the hood is tilted in the other direction.

3. In a device of the character described, a base, a tiltable hood, means between the base and the hood whereby the elevation of the hood may be varied, a spring for counteracting the weight of the hood, means whereby the tilt of the hood may be varied, and means coacting with said spring for maintaining said hood in any of its tilted positions.

4. In a device of the character described, a base, a tiltable hood, telescopically cooperating members operably associated between the hood and the base, a pivot between the hood and one of the telescopic members, means slidable on the said one of the telescopic members engageable' with the hood on one side of the pivot, and a spring between the base and the said means for counteracting the weight of the hood and for resisting the tilting of the hood on the pivot.

5. In a device of the character described, a base, a hood, a member connected to the hood, a pivot between the hood and the member, means for arresting the tilting of the hood in one direction, and means including a spring for urging the hood in the said direction.

6. In a device of the character described, a base, a tiltable and vertically adjustable hood carried by the base, a spring in the base for counteracting the weight or the hood, and means disposed between the spring and the hood whereby the spring is compressed when the hood is tilted.

'7. In a device of the character described, a base, a tiltable and vertically adjustable hood carried by the base, and means including a spring for counteracting the weight of the hood and for resisting the tilting thereof.

8. In a device of the character described, a

base, a tiltable and vertically adjustable hood carried by the base, a spring for counteracting the weight of the hood, and means coacting with the spring for resisting the tilting of the hood.

9. In a device of the character described, a base, a tiltable and vertically adjustable hood carried by the base, a spring for resisting the tilting of the hood, and means coacting with the spring for counteracting the weight of the hood. 10. In a device of the character described, a base, a vertically adjustable hood carried by the base, means whereby the hood may be tilted in one direction only from its normal position, and means including a spring for counteracting the weight of the hood and for urging the hood in a direction toward its normal position.

11. In a device of the character described, a base, a vertically adjustable hood carried by the base, a pivot between the base and the hood whereby the hood may be tilted, means for preventing the tilting of the hood in one direction from its normal position, and means including a spring for counteracting the weight of the hood and for urging the hood in a direction toward its normal position.

12. In a device of the character described, a base, a tiltable hood carried by the base, telescopic means in the base whereby the hood may be vertically adjusted, and means including a spring within the telescopic means for counteracting the weight of the hood and for resisting the tilting thereof.

13. In a. device of the character described, a base, a vertically adjustable hood carried by the base, pivotal means between the base and the hood whereby the hood may be tilted, and means including a spring within the base for counteracting the weight of the hood and for resisting the tilting thereof.

MAXIMILIAN EHRLICH.

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