US285109A - Signments - Google Patents

Description

(No Mbdel.)

H. A. GANDRIAN. BARBBRS 08818.@

Patented sept. 18,1888.

UNITED STATES HERMAN A.

OANDRIAN, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO HENRY PULVER, OF SAME PLACE.

BARBERS CHAI-E.V

-SPECIFICATION forming part of Letters Patent No. 285,109, dated September 18, 1883.

Y Application filed September 5, 1882. (No model.) i

To @ZZ whom, it may concern,.-

Be it known thatI, HERMAN A. CANDRIAN,

of Chica-go, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Barbers7 Chairs; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to tlie accompanying drawings, and to the letters of reference marked thereon, 10 which form a part of this specification.f

My invention consists in certain improvements in barbers lchairs, as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 represent-s a front perspective view ofthe entire chair with portions of it broken away to show the seat-adjusting attachment; Fig. 2, a rear perspective View of the back of the chair; Fig. 3, an elevation and cross-section ofthe grooved portion of the back with the spring-pawl; Fig. 4, an end elevation and cross-section of the head-rest and standard detached; Fig. 5, an

end and side elevation and sectional view of the spring-pawl. Fig. 6 represents an elevation of the toothed standard detached; Fig. 7, an elevation of the pedal-shaft, Fig. 8, a sectional end elevation of the pedal-shaft; Fig 9, side and endelevation and cross-section of one of the pivot-brackets; Fig. 10, va plan of the spring-pawland guide-boX; Fig. 11, an elevation of the guide-box; Fig. 12, a vertical section of the pawl-head, and Fig. 13 a vertical cross-section of the pawl and guide-box. Corresponding letters in the several igures 3 5 of the drawings designate like parts. A denotes the base of the chair, and B the seat that is pivotally connected to the base A in any usual manner for the chair-seat to have a tilting movement thereon. 4o -O is the back, and D the arm-rests, which are rigid with the chair-seat. central rail, a, and the top rail, b, of the chairback C are grooved for inserting' and guiding the standard E of head-rest F, and an iron plate, c, is secured against the top rail, a, for holding such standard E in its groove. The standard E is slotted fromv near the head-rest to its bottom end, and a slotted plate, d, having ratchet-teeth, is sunk into the front face of 5o such standard, and is secured therein by wood screws. A leaf-spring, e, is placed in a recess The vertical `in the slotted portion of rails c and b, and is vsecuredwith its lower end by wood screws. The upper end of this leafspring is provided in its middle with a screw-tapped boss, f, for coupling the screw-end of the shank of a knob, i g, and to each side of such boss pawl-teeth are formed to the edges of the spring, which fit into the ratchet teeth of plate 61,. and are `forced by the spring e to engage therewith.-

4The shank of knob g projects through the slot `of standard E and toothed plate d in a manner that it will not interfere with a sliding movement of such standard in its groove, and that the spring e can be depressed and the teeth thereon disengaged from the toothed plate d bya pressure against such knob. During transportation of the chair the knob can be unscrewed, to prevent its being bent or broken, and it can be readily attached again when the chair is to be used.

The advantages over former devices, that were exteriorly secured against the back of the chair, and were exposed to frequent. break ages, of this device, in which the entire locking mechanism is concealed and protected, cepting the operating-knob, that can be removed, will be readily seen.

S is a shaft having conical end journals, which are pivoted in conical holes of brackets G. These brackets G are each formed with flanges or ears c c2, provided with screw-holes a, through which are passed wood screws, by means of which said brackets are secured against the inner sides of the base A. Vithin an extension of each flange or ear, are the conical holes at, within which the conicalended journals ofthe shaft S have bearing. As the conical ends of the shaft-journals become worn in use,the position of the brackets G can be readily adjusted upon said base, thereby furnishing compensating bearings that will provide for the taking up of any lost motion of the shaft-j ournals therein, and thus will prevent rattling. This shaft S has cast to near one end a pendent pedal, 71, and to near its oppo site end a vertical arm, i. connecting-link, j, is coupled to the end of a sliding pawl, K, which is inclosed in an oblong frame, H, composed of two plates, Zand m. The plate has two lugs, fn, between which the head of the pawl. is guided, and also a This arm t', by arectangular end lange, 40, for securing the frame by wood screws against the front crossbrace of base A. Plate m has a rectangular end flange, p, which, together with the plates Z and m and the lugs fn, forms the guide-loops for the standard ratchet-bar I. The forward ends of plates Z and m have lugs q, that joint on the center line of the frame and forni the guide-hole for the cylindrical shank of pawl K. The head of pawl K is square, with its end beveled to correspond with the bevel of guide-lugs n, and this beveled faceis provided with a series of V-shaped teeth. The shank of the pawl K is surrounded by a spiral spring, r, which with one end presses against the end lugs, q, and with its opposite end against the head of pawl K. The ratchet-bar I is pivoted with its upper end between two lugs of a plate,

s, that is secured under the front of the seat. rIhe upper half of this bar I is square, and its lower half is prisniatic or triangular, so aste enter the similarly-shaped guide-loop in frame H, and has V-shaped teeth to the one of its three sides that comes in contact with the beveled and toothed end of the pawl K, so as to be engaged and locked thereby at any desired elevation. rlhe advantage of this beveled engagement of the pawl Awith the ratchet-bar is that such pawl at the same time will act like a wedge, and will press the bar I into one corner of its guide-loop, and will thus prevent all rattling noise. Y

The pedal h is in a position at one side under the rear of the chair`where it is most eonvenient for the barber to reach it with his foot whenever he intends to change the inclination of the chair. By placing his foot upon the pedal the pawl K will be pulledaway from the ratchet-bar, when the seat can be tilted to the desired angle, and then,by releasing the pedal again, the pawl K will be pushed again into contact with the ratchet-bar I by the spring r, and will lock the seat to be rigid with the base.

The teeth on the ratchet-bar I and pawl K' being V-shaped, they will lock-much closer than more square teeth, and will not permit any lost motion or play.

\Vhat I claim is- The herein described locking device for barbers chairs, consisting of shaft S, having pedal h and arm c', of connecting-link j, bevelended pawl K, frame H, spring i', and ratchetbar I, constructed as described, whereby it may be connected to the seat, the whole being constructed and arranged substantially as shown and described.

In testimony that I claim the foregoing as my invention I aflix my signature in presence of two witnesses.

HERMAN A. CANDRIAN.

lVitnesses:

EDWARD WEsTLilKn, RIcHD. G. SCHMID.

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