US729853A - Mouthpiece for speaking-tubes. - Google Patents

Description

No. 729,853. PATENTED JUNE 2, 1903. J. FINCK & H. HERBSTRITT. MOUTHPIEGE FOR SPEAKING TUBES.

APPLICATION FILED JULY 7. 1902.

2 SHEETS-SHEET 1.

10 MODEL.

v m W W n 1 PATENTED JUNE 2, 19.03.

J. FINGK & H. HERBSTRITT. I MOUTHPIEGE FOR SPEAKING TUBES.

urmcurou FILED JULY 7. 1902.

2 SHEETSSHBET 2.

K0 MODEL.

UNITED STATES Patented J line 2, 1903.

PATENT OFFICE.

JULIUS FINCK AND HERMANN HERBSTRITT, OF SAN FRANCISCO, CALIFOR- NIA, ASSIGNORS TO WILL dz FINCK COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

SPEAKING-TUBES.

SPECIFICATION forming part of Letters Patent No. 729,853, dated June 2, 1903.

Application filed July 7, 1902.

To (tZZ whom, it may concern.-

Be it known that we, JULIUS FINOK and HERMANN IIERBSTRITT, citizens of the United States, residing in the city and county of San Francisco, State of California, have invented an Improvement in Automatic Electric Windproof Mouthpieces; and we hereby declare the following to be a full, clear, and exact description of the same.

Our invention relates to improvements in call-annunciators in which both avisible and audible signal is given. Its object is to provide a device in which a semaphore will be operated, a whistle blown, and an electric bell rung by the action in the tube, of the'breath of the person giving the call and in which device wind and drafts will be prevented from passing through the tube to operate the signals accidentally, as so frequently happens in factories and large buildings to cause annoyance in answering false alarms.

The invention consists, essentially, of cutoff Valves interposed in the mouthpieces, hand-operated means by which the valves may be opened, as when it is desired to.talk into the tube, connections between each of said valves, and a semaphore, and also electrioal connections by which an indicator and bell are operated when the tube is blown into, 30 thereby giving continuous notice to the eye and car until the call is answered.

' It comprises details which will be more fully set forth hereinafter, having reference to the accompanying drawings, in which- Figure 1 is a view of mouthpiece A. Fig. 2 is a View of mouthpiece B at the other end of tube. Fig. 3 is a view with housing removed. Fig. 4: is a cross-section of mouthpiece. Fig. 5 is a section of housing.

A and B represent two mouthpieces located at separated points and connectedbythe usual air-tube 2. Each mouthpiece contains a flap or valve 3, actuated by a spring A on the shaft 5, on which the valve is hung in the air-passage. The rearward movement of the flap is limited by a stop 6, and when the flap rests against the stop, as it normally does, it is impossible to talk through the tube or Serial ITO-114,660. (N0 model.)

blow therethrough from the speaking end of its respective mouthpiece. A whistle and receiving-tube 7 may be attached to each mouthpiece between the speaking end of the piece and its flap 3. A rearwardly-inclined 'baffle 8 diverts sufficient air into the receiving-tube to blow the whistle.

The flaps 3 may be operated in two ways and for two different purposes. When it is desired to talk from A to B, for instance, the flap in A is lifted by means of a spring-actuated key 9, and the flap in B is then lifted by blowing through A, which causesa colored semaphore or indicator 10 to appear at window 11 in thehousing 12. The key 9 is supported in the housing 12 in line with shaft 5. The inner end of the key-shaft carries a segment 13, on which is a pin projection 14. The shaft 5 has a plate 15 fixed to it, and a weighted arm-plate 16 is pivoted at 17 to the plate 15 eccentric to shaft 5. The arm-plate has a slot 18, in which a pin 19, fixed in plate 15, is movable. The arm 16 of plate 16 carries two pins 20 21. The first is adapted to engage a cam 22 on the shaft 23 to raise the semaphore 10 when the flap 3 in B, for example, is operated by blowing through A. The pin 21, on the other hand, engages a projection 24 on cam 22 to throw down the semaphore when the operator turns the key of B to open the flap, which is done by the pin 14 on segment 13 striking the lower side of the weight-arm, causing the latter to turn on its pivot 17 till the rear wall of slot 18 strikes pin 19 on plate 15, after which the continued movement of the key causes the shaft 5 to turn in unison with the key. Thus it is seen that the arc of movement of the pins 2021 is different when the flap is lifted by merely blowing through the tube than when the key is actuated to lift the flap, so that while the flap in the first instance throws the semaphore from a horizontal into a vertical position and displays a signal the act of the operator in answering the call throws the indicator from a vertical to a horizontal position again in readiness for a subsequent call from the same source. A spring 25, having one end secured to an eccentric 26 on the indicatorshaft 23, tends to hold the indicator or semaphore in a vertical or horizontal position. When in the latter position, it rests on a stop 27 out of contact with the metal plate 28, which is insulated from the mouthpiece-casing. The plate 28 forms one pole of an electric circuit and the semaphore the other, and connection is had between these poles and the binding-posts 29, whence Wires run to a conveniently-situated bell, so that when the semaphore is lifted into a vertical position a projection 30 on shaft 23 will contact with plate 28, completing the circuit and ringing the bell continuously until the key 9 of the mouthpiece displaying the signal is turned to throw down the semaphore and break the connection.

Having thus described our invention, what We claim, and desire to secure by Letters Patent, is-

1. The combination in a speaking-tube, of a hinged plate in the air-passage, a semaphore, means including a rock-shaft carrying the semaphore and connections between the hinged plate and rock-shaft whereby thelatter may be operated in opposite directions, and means whereby a continuous audible signal may be given simultaneously with the movement of the semaphore in one direction, said signal being broken when the semaphore is moved in another direction.

2. The combination in a speaking-tube, of a plate hinged in the air-passage, a semaphore, means including a rock-shaft carrying the semaphore and connections between the hinged plate and rockshaft whereby the latter may be operated in opposite directions, and means whereby a continuous audible signal may be given simultaneously with the display of the semaphore and movement of the rock-shaft in one direction, whereby both visible and audible signals are given at the same time, and means whereby both signals are automatically discontinued by lifting the hinged plate in the act of answering the call.

3. The combination in a speaking-tube, of a plate hinged in the air-passage, a semaphore adapted to be displayed when air-currents pass through said passage to actuate the plate, and means including a rock-shaft carrying the semaphore and provided with a projection, and a device movable with the hinged plate and adapted to engage said projection whereby the semaphore-signal is discontinued by a subsequent manual actuation of the plate.

4. The combination in a speaking-tube, of a hinged plate in the air-passage, an indicator mounted on a rock-shaft, connections including a member on the rock-shaft and a contacting member movable with the hinged plate whereby the rock-shaft may be operated to display the indicator on the movement of the plate, connections between said indicator and electrically-sounded apparatus, and means whereby said electrical connections may be made and broken simultaneously with the display and discontinuance of the indicator-signal.

5. The combination in a speaking-tube, of a spring-actuated plate hinged in the air-passage, a tiltable indicator,connections between said indicator and plate, and includipga rockshaft having a cam and a member movable with the plate and adapted to engage said cam to move the rock-shaft in one direction, connections between said indicator and electrically-sounded apparatus, said connections including a projection on said indicator, and a spring-plate with which said projection is adapted to engage when the indicator is tilted to give a signal, and hand-operated key mechanism by which said signal may be discontinned.

6. The combination in aspeaking-tube, of a spring-actuated flap-valve interposed in the air-passage, stop means by which its movement in one direction is limited, an air-outlet intermediate of said valve and the speaking end of the tube, a baffle by which a portion of the airis diverted into said air-outlet, and signal devices operatable by the movements of said valve.

7. The combination in a speaking-tube of a hinged plate in the air-passage, operative means connecting said plate and a signal mechanisimsaid means including a plate fixed on the pivot-pin of the hinge of said plate, a weight-arm pivoted to said fixed plate and having a limited movement about its pivot.

8. The combination in a speaking-tube, ofa hinged plate in the air-passage, a rock-shaft,- a cam on said shaft, a projection on said cam, and means upon the hinge-plate engaging said cam and projection to rock said shaft in opposite directions.

9., The combination in a speaking-tube, of a plate hinged in the air-passage, a rock-shaft, an indicator thereon, a weight-arm pivoted eccentric to the pivot-pin of the aforesaid plate and movable in unison thereon, and connections between said weight-arm and the indicator-shaft whereby the latter may be rotated in either direction.

10. The combination in a speaking-tube of a plate hinged in the air-passage, a Weightarm pivoted eccentric to the shaft of said plate, and movable in unison therewith, said weight-arm having a limited movement independent of said plate, connections between said arm and signaling means and means for operating said arm.

11. The combination in a speaking-tube of a plate hinged in the air-passage, a weightarm pivoted eccentric to the shaft of said plate and movable in unison therewith, signal devices operable by the movements of said arm, and an independent key mechanism by which said arm may be engaged and moved.

12. The combination in a speaking-tube of a plate hinged in the air-passage, a pivoted weight-arm movable in unison with said plate and also having a limited movement independent thereof, signal devices operable by the movement of said arm, a housing for said devices and said arm and a spring-pressed key mechanism journaled in said housing by which said arm may be actuated.

In witness whereof We have hereunto set our hands.

JULIUS FINOK. HERMANN I-IERBSTRITT. Witnesses:

J. M. ,ELLIs, S. THOR.

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