US1425325A - Reclining-bar clamp for barbers' chairs - Google Patents

Description

W. F. KOKEN.

RECLINING BAR CLAMP FOR BARBERS CHAIRS. v

IAPPLICAT10N FILED DEC. 12, 1920.

, 1,425,325. t n ed Aug. 8, 1922.

2 SHEETSTSHEET 1.

Fig.2; Fig.1

i l hh 14 rE/iFK W. F. KOKEN.

RECLINING BAR CLAMP FOR BARBERS CHAIRS.

APPLICATiON 'HLED DEC. 13, 1920.

1 42 5 32 5 Patented Aug. 8, 1922.

2 SHEETS-SHEET 2.

- 14 TE/PF/(oKEM UNITED STATEfi rare FFIQE.

WALTER F. KOKEN, OF ST. LOUIS, MISSOURI.

RECLINING-BAR CLAMP FQRBARBERS CHAIRS.

Specification of LettersPatent.

Patented Mg. 8,1922.

Application filed December 1:3, 1920. Serial No. 430,389."

. tion, such as will enable others skilled in the art to which it appertains to make and use the same. I

' This invention relates to reclining bar clamps for barber chairs. I The object of my invention is to provide a barbers chair or the likev whichis equipped with an electrically-operated device for releasing the clamp that locks the reclining bar which holds the back and apron of the chair in adjusted position.

Figure 1 of the drawings is a side elevational view of a barbers chair equipped with a reclining bar clamp constructed in accordance with my invention.

Figure 2 is a diagrammatic View, illustrating the wiring of the electrically-operated device for releasing the reclining bar clamp.

Figure 3 is a vertical sectional view, taken on the line 33 of Figure 1, looking in the direction indicated by the arrows; and

Figure 4 is a vertical sectional view, taken on the line ie-at of Figure 3, looking in the direction indicated by the arrows.

Referring to the drawings which illustrate the preferred form of my invention A designates the seat frame of a barbers chair of conventional design, B designates the back, C designates the apron of the chair and D designates the arms of the chair, said back, apron and arms being joined together in such a manner that a change in the position of the back effects a change in the position of the apron and arms. The standard of the chair is provided with a vertically-disposed socket 1 that receives a vertically-adjustable stem 2 which carries the seat frame of the chair. I have not herein illustrated the means that is used for raising and lowering the stem and for locking the stem in adjusted position, asmy present invention relates solely to the means that is used for holding the back of the chair and the parts associated with same in adjusted position.

In barbers chairs and similar chairs the back and the apron are retained in adjusted position by a bar commonly termed a reclining bar that is normally locked by a clamping device through which the reclining bar passes. reclining bar 3 co oper'a-tes with a clamp composed of two jaws i and 5 that are nor-:-

mally held in. snug engagement with the reclining bar bya; resilient means and which are adapted to'be separated'so.v as to release the reclining bar'by means of an electricallyoperated device. The reclining bar 3, as herein illustrated, is pivotally connected'at itsffront end to a bracket 3 on the apron of the-chair 'an'd the two jaws 4 and 5' that constitute the reclining bar clamp are pivotally connected together' and are held pressed tightly against therec lining bar by springs 6 arranged between the jaw 4 and the heads 7 of laterally-proj ecting studs 8 on the which pass through holesv in the jaw 4, as shown in dotted lines inFigure 3.

The jaws of said reclining bar clamp are separated to release the reclining bar 3 by energizing an electrically-operated device so as to cause one of said jaws to move relatively to the other. Various kinds of electrically-operated devices may be used and any suitable means may be employed for efiecting the movement of one or the other of the j as of the reclining bar clamp when said electrically-operated device is energized. In the form of my invention herein shown a solenoid E which is arranged on the inside of the stem 2 of the chair, as shown in Figure 4, is used for rocking a shaft 9 so as to cause the jaw 4 to move away from the jaw 55, and thus release the reclining bar 3. The shaft 9 is arranged horizontally in the stem of the chair, as shown in Fig ure 3, and is provided at its left hand end with a coarse screw thread 9 which extends through a threaded hole in the jaw 5 of the reclining bar clamp, the left hand end of said shaft 9 abutting against the inner side of the jaw l. The core 10 of the solenoid is connected by means of a link 10 with an arm 11 on the shaft 9 so as to rock the shaft 9 in one direction, and a spring 12 is connected to said arm 11 so as to rock the shaft 9 in the opposite direction back to its normal position. Normally, the spring 12 holds the shaft 9 in such a position that the jaws 4 and 5 will In the chair "herein illustratedthe clamp the reclining bar and thus hold the back and apron of the chair in adjusted position. When the solenoid E is energized by closing the circuit X, the link 10 ulls the arm 11 downwardly, thus causmg the shaft 9 to move longitudinally of its hearings (to the left, looking at Figure 3), due, of course,'to the factthat said shaft is provided with the screw thread 9 which co-operates with an internal screw thread in the jaw 5. The pressure that said shaft 9 exerts on the jaw4 moves said jaw away from ithe jaw 5 sufiiciently to release the reclinin'g bar 3, and thus perrnit the back of the chair to hernoved.

Thereafter when the circuit X is opened, thev spring ,12 restoresithe shaft 9 to its normal position "and the springs .6 force the jawtt ,towardslthe aw 15 thus musi g thereclining bar to beclampecl securely enough to hold the back and the associated parts of the chairin adjusted position.

VYhile fI have herein illustrated myin-. ventioneniho died in'a reclining bar clamp composed vof .two pivotally connected springpressed jaws Jthat are adapted tQbeKsep arated to release the reclining bar by ener giz ing .s olenoid whose core aotuates a means which effects a change in the relativepositionkof'said jaws, I wish 'itto he understood that the particular form of the reclining Ybarclan ip is immaterial and that various forms of electrically-operated "devices may be :used for rendering the rereclining bar for cont-roiling the position of said back and apron, a" spring pressed clamp for holding said reclining bar in adjusted position, a horizontally-disposed rock shaft journaled in'the stem of 'thefi chair, co-operating means on said rock shaft and clamp for releasing the clamp when said shaft rocksin' one direction, an arrn :on said rock shaft, a spring that co -Loperateswith saidarmto normal-1y hold said rock shaft in a position wherein'it hasno eifect on's aid clamp and anelectro magnet-Varrange'd inside" of the stern of the chair and operatively connected with the arm on said rockishaft formovin'g saidshaftin afdirec tion to cause itto release the reclining bar clamp. v v

WALTER F. KOKEN;

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