US942603A - Head-rest for barber-chairs. - Google Patents

Description

A L UNDELAND HEAD BEST FOR BARBER OHAIRS. APPLIGATION FILED JUNE 25, 1908. RENEWED MAY 19, 1909.

Patenteei Deal 1909.

APPLIOATION FILED DEC. 30, 1909.

forming two transversely extending diskunrrnn stares HEAD-REST FOE BARBERFOHAIRM DREW L. UNDELAND, OMAHA, NEBRASKA.

Specification of Letters Patent.

Patented Dec. 2, 19959.

Application filed June 25, 1908, Serial No. 440,289. Renewed lllay 19, 1909. Serial No. 496,940.

To all whom it may concern:

Be it known that I, ANDREW L. UNDE- LAND, a citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented a certain new and useful Improvement in Head-Rests for Barber-Chairs, of which the following is a full, clear, concise, and exact description.

My invention relates to an attachment to chairs of the type used by barbers and dentists. Its object is to provide a head-rest which may be quickly and easily adjusted to different positions.

One feature of my invention contemplates means by which the head-rest may be raised or lowered. This and other features of my invention may be more readily understood. by reference to the accompanying drawings, in whic i- V Figure 1 is a side elevation of the struc t-ure embodying my invention, the back of the chair to which it is attached being shown in section; Fig. 2 is a front elevation of the attachment removed from the chair, and showing in dotted and full lines, respectively, different-vertical positions to which it may be adjusted; Fig. 3 is a rear elevation of the upper end of the structure shown in Fig. 2; Fig. 4 is a section on the line H of Fig. 2, but as in Fig. 1 showing the attachment affixed to the back of a chair; Fi 5 is a section on the line 5-5 of Fig. 4; Fig. 6 is a section on the line 6-6 of Fig. 2; and

Fig. 7 is a detailed perspective view of the pawl hereinafter referred to.

Similar numerals of reference are used to designate similar parts wherever shown;

The body portion of the attachment consists of a channel-shaped standard 1 adapted to be secured upon the back of a chair, and a slide bar 2 vertically adjustablerelative to said standard in order to raise or lower the cushion supporting plate 3, which is car i d upon the upper end of said standard and upon which the cushion or headrest a is mounted. The slide-bar 2 is bifurcated at its upper end, said bifurcated end like cars 5, 5. A disk-shaped tongue 6 extendsreanvardly from the plate 3 and fits into the groove formed between the ears 5. Said disk-shaped tongue 6 is provided with a radially extending slot, as shown in Figs. 4 and 5. A pin 7 passes through said slot and serves to pivot said tongue to said cars. A. coiled spring 8 is interposed in said slot between the pin 7 and the opposite end of the slot, the tension of'said spring normally holding said tongue with the inner end of the slot resting against the pin 7, as shown. in Fig. The circumference of each of the ears 5, 5, is provided at the front with a plurality of grooves separated by teeth 9. The tongue 6 is provided with a pin 10 which is adapted to lie between said teeth and thus to hold the supporting plate 3 in its adjusted reclining position. It is apparent that in order to adjust the reclining position of the head-rest, it is merely necessary to pull the plate 3 forward against the tension of the spring 8 and thus to shiftthe pin 10 with reference to the teeth When the use of a headrest is not des1red,.as tor example, during the operation of cutting hair, the cushion. may be pulled forward against the tension of the spring 8, and then swung backward out of the way, as illustrated in dotted lines in Fig. l. The advantage of such structure over that in common use, which latter structure necessitates the complete removal of the head-rest from the chair when it is not desirable to use the same, is obvious.

One of the side walls oi the cl1a1u1clshaped standard 1 is in the form of a ratch or rack-bar 11 provided "with inclined an-- gular teeth 11, between which a pawl 12, carried by the slidear drops, thus hold ing the slide-bar in its adjusted longitudinal position. Near its lower end the slidebar 2 has a notched cut away portion 13, which is of circular shape at its inner end, and which. flares outwardly to one edge of the bar. The pawl 12 has a circular or disk' shaped head 14 which fits in the circular portion of the notch 13. 'lfhe free end of the pawl 12 is normally held by the thrust of a spring 15 in position between the teeth ll of the rack-bar 11. The pawl 12 operated by means of a rod connected at 17 wi' the pawl. 15 Said rod lies in a longitiulinul groove in the side of the slide-bar 2, and is provided at its upper end with an operating handle 18. 'lhe upper end of the rod 1 may be bent downward, as at 15), into a dowmvardly tending hole 90, and the rod '16 thus be held in position in the groove of ,.tiie slide-bar. To raise the slldwliur 2, all that is necessary is to grasp the same and pull it upwardly to the desired position, since the pawl in such case ridesfreely over the teeth ll. To

it; which is pivotally I slide bar and provided at ,with theleeth ll.

' raised or lowered,

lower the slide bar, said bar is first slightly raised, so as to tree the pawl 12 from the tooth 11 with which it is in engagement, 'llclGHPOll the rod 16 may be depressed to push the pawl 12 down out of engagement The slide-bar may then be lowered releasing the bar in, the tension of the spring 15 causes the pawl 12 to engage a teeth 11'' and hold the parts in their adjusted. positions.

It is obvious that the hcadrest may be chning positions or swung entirely out of the way, and that such manipulations may be perforn'ied with one hand of the operator. claim a 1. In an attachment for chairs, the combination with the back of a chair of a channelshaped standard secured thereto with the back of the chair forming a cover for the channel-opening, said standard having a. rateh formed in one of the side walls of the channel, a slide-bar vertically adjustable in'said channel, said slide-bar having an outwardly flared cut-away portion at its lower end in the edge thereof adjacent said rateh, a pawl pivoted within said out-away portion of the slide-bar, a spring normally holding said pawl in engagement with said. ratch, and an operating rod extending from said pawl beyond the upper end of said its upper end with an operating handle,-

2. In an attachment for chairs, the combination with a channel-shaped standard adapted to be secnredto the back of a chair, one of the side Walls of the channel forming a ratch, a slide-loar consisting of a flat longitudinal plate vertically adjustable in said channel, said slide-bar having a out-away portion at its lower end in the side thereof adjacent to said. ratch, and a longitudinal groove in the side of the slide bar extending from said cutaway portion to the upper end of the slide-bar, a pawl pivoted W'thin the cut-away portion of the slide-bar, and

to the desired position, and upon f adjusted to di'lt'erent rc-' l to said pawl and d. 'of said slide l slide-bar and being provided at its free end 'with an operating handle. :3. In an attachment for chairs, the combination with a ,"--adapted to hesecurcd to the back of a chair, l 9110 of the side walls otthe in said channel, said slide-bar having a cutaway portion on the side thereof adjacent to said. rat-ch. said cut-away portion being in the form oil a deep notch having a roundpawl pivoted within said out-a *ay portion of the slide-bar, said pawl having a rounded head fitting in the roumled bottom of aid notch, a spring normally holding said pawl in engagementwith said rate-h, and an operating rod extending it'ron'i to the upper end of said slide-bar.

4. ln anattachment for chairs, the combination with a channel -shaped standard adapted to be secured to the back of a chair,

bar, said rod lying in said groove in the T channel. shaped standard,

channel term-y 5 mg a rateh, a slide-bar vertically ad ustable ed bottonigand tuitwardly i'laring walls, a' l one of the side walls of the channel forming a. ratch, a, slide-bar vertically adjustable in said channel, said slide-bar having a cab away portion on the to said ratch, and a longitudinal groove exride thereof adjacent I tei'id'lhg from said cutaway portion to the upper end of the slide-bar, within the cut-away bar,

a pawl pivoted portion of the slide- 80 l and an operating red lying in said. j groove in the slide bar, sald rod being, p1v-

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