US2420887A

US2420887A - Audible timer

Info

Publication number: US2420887A
Application number: US517011A
Authority: US
Inventors: Lane Kingdon
Original assignee: Individual
Current assignee: Individual
Priority date: 1944-01-05
Filing date: 1944-01-05
Publication date: 1947-05-20
Anticipated expiration: 1964-05-20

Description

May 20, 1947. LANE 2,420,887

AUDIBLE TIMER Filed Jan. 5, 1944 2 Sheets-Sheet l INVENTOR I XLWXM 06 BY 6- 9 May 20, 1947.

Filed Jan. 5, 1944 2 Sheets-Sheet 2 s5 7 53 1 34 9 7 3O 16 4 36 31 e '27 Q6 32 43 INVENTOR ATTO R N EY Patented May 20, 1947 UNITED STATES PATENT OFFICE AUDIBLE TIMER Kingdon Lane, New York, N. Y.

Application January 5, 1944, Serial No. 517,011

(01. Mil-26) 8 Claims.

This invention relates to photography, particularly to printing, and more especially to timing and lighting therefor.

A principal. object of this invention is the production of a device which may be operated by the foot and which includes therein a device for producing an audible tap, or click, or sound of some nature at a predetermined interval after the first operation by the foot and continuously thereafter just so long as it is being operated and which simultaneously extinguishes a safe lamp used to illuminate the foot operable member and extinguishes a safe lamp used for general illumination and lights a printing lamp so that in the operation of printing, both hands of an operator will be free and there will be no light showing other than the printing light.

Other objects and advantages will appear as the description of the particular physical embodiment selected to illustrate the invention progresses, and the novel features will be particularly pointed out in the appended claims In describing the invention, and the particular physical embodiment selected to illustrate the invention reference will be had to the accompanying drawing and the several views therein, in which like characters of reference designate like parts throughout the several Views and in which:

Figure 1 is the top plan view of a device embodying my invention; Fig. 2 is a cross sectional view of the device as shown by Fig. 1, on the plane indicated by the line 11-11, viewed in the direction of the arrows at the ends of the line; Fig. '3 is abottom View of the device with the bottom wall broken away in order to more clearly show the internal construction; Fig. 4 is a cross sectional view on the plane indicated by the line IV-IV, cf Fig. 2, viewed in the direction of the arrows at the ends of line; Fig. 5 is a diagrammatic view illustrating the circuits of the invention.

Numeral I designates a hollow container, preferably formed of sheet metal, having a bottom wall 2 adapted to rest upon a plane surface, such as a floor; a top wall 3 positioned at an acute angle to the wall 2, that is, to a floor upon which the device may be positioned; and a vertical wall rising from the acute angle wall 3.

l vithin the container, supported in any suitable or appropriate manner, as on a cross partition wall '5 is a motor 5. lhe motor 6 is of any the usual and. ordinary well known forms of electric synchronous motor and, as usual, is proided with an armature connected to an outstanding arm I which, when the armature is rotated by the energization of the motor, is r0- tated. The arm 1 has a tapper 8 on the end thereof which when rotated contacts the pivoted member 9 once at each revolution and always starts from the pendant position, as shown in Fig. 2 as the member 8 is of such weight that it moves to its lowest position when not operated upon by the motor armature. The lever 9 is pivoted mid-way of its ends, as on the pivot l0, and is weighted so that it falls with its end H resting upon the bracket l2. When the lever 9 is struck by the member 8 the end ll of lever 9 rises and hits a fixed object such as bracket 13 and in so doing makes an audible sound such as a tap or click. The positioning of member 8 and the end of lever 9 is such that when the member 9 strikes 8 and moves it, 8 may then pass lever 9 so that lever 9 is struck once upon each rotation of 8, and so a single click is made for each rotation of 8.

The vertically rising wall 4 is pierced at two points as at H and Hi In each of these piercings a suitable transparency, such as M is positioned. This transparency may be of any of the usual or ordinary materials, such as colored glass. The color selected should be one which is least likely to affect a photographic printing paper. These transparencies allow light to radiate therefrom to illuminate a pedal I 5.

Back of transparencies in the vertical Wall 4 are positioned lamps. One I6 is back of piercing li and one ll isback of piercing [3 The acute angle positioned top surface 3 has a suitable means attached thereto, as hinge l8, to which is attached, the pedal or foot operable member l5. By pressing downwardly upon 15, as shown in Fig. 2, the pedal l5, When depressed, depresses the spring pressed plunger l9 downwardly and so controls electric circuits to be hereinafter more fully described.

In the vertical wall 20 of the container there are positioned two receptacles 2| and 22. These receptacles are of the ordinary or usual form for receiving a pronged plug by which connection be made to a printing lamp and to a safe lamp.

The electric circuits are best shown in Fig. 5. Plug 23 is connected to a source of alternating electric potential. 2| is the receptacle for plugging in the printing lamp. 22 is the receptacle for plugging in the safe lamp. The safe lamp is designated 24 and the printing lamp is designated 25.

The two conductors from plug 23 are carried, one to one side 25 and the other to the other side 21 of the double pole double throw switch,

designated as a whole in Fig. 2 by 28, and spring pressed by spring 29 in the direction of the arrow 38, that is, upwardly as viewed in Fig. 2.

Normally, currently flows through the switch from 26 to wire 31 and so through lamp I1 and thence by wire 32 to lamp l6 and thence by wire 33 to 2?. This energizes lamps l6 and IT. These lamps are preferably both 110-120 volt lamps. Being connected in series, they last much longer.

At the same time that lamps l6 and I! are energized, a

branch circuit'by wires

34 and 35 energized safe lamp 24 so that both lamps l6 and H illuminating the pedal are energized together with safe lamp 22.

When foot pedal is depressed, plunger i9 is depressed and acting against spring 29

bars

35 and 3? connect 26 and 21 with 38 and 39 respectively. When this connection is made, wires 55 and ll energizes printing light 25 and at the same time by branch circuit including wires 42 and 4-3 the motor 6 is energized.

From the hereinbefore given description it will be now understood that the device as a whole may be placed upon the floor of a photographic print room. Normally the safe lamp 24 will be lighted and the printing lamp 25 will be unlighted and foot pedal illuminating lamps l6 and H will be normally lighted. If the operator desires to printing and to time his printing, at the proper moment, by means of the foot, he depresses pedal or disk !5. Immediately the motor 6 is energized and in a definite time thereafter produces an audible click by means of lever 9 and as long as it continues to run, that is, as long as pedal I5 is depressed, an audible click or sound is produced at the end of each predetermined interval. Simultaneously with the start of the motor, lamps l6 and H are extinguished and safe lamp 24 is extinguished but at the same time printing lamp 25 is energized.

From the hereinbefore given description it will now be apparent that a timer and switch control for the usual lamps employed in a printing room have been provided which enables an operator to do his timing and control his lights by his foot so as to leave his hands entirely free for any manipulation which he may desire to carry on and enable him to do printing without any effect whatsoever from lights other than the printing light.

Although I have particularly described one' exhaust the possible physical embodiment of means underlying my invention.

What I claim as new and desire to secure by Letters Patent of the United States is:

1. An audible timer, in combination; a normally unenergized electric synchronous motor; a source of alternating potential; a safe-lamp, normally connected to the source of potential; means operated by the motor when running producing an audible sound always at the same definite length of interval after starting and thereafter at predetermined intervals and means for simultaneously connecting the electric motor to the source of potential and disconnecting the safe-lamp from the source of potential.

2. An audible timer, in combination; a normally unenergized electric synchronous motor; a source of alternating potential; a safe-lamp, said safe-lamp normally connected to the source of potential; a printing lamp normally unenergized; means operated by the motor producing an audible sound always at the same definite interval after starting and thereafter at predetermined intervals and means for simultaneously connecting the motor and the printing lamp with the source of potential and disconnecting the safe-lamp therefrom.

'3. An audible timer, in combination; a normally unenergized electric synchronous motor; a source of alternating potential; a safe-lamp, said safe lamp normally connected to the source of potential; a printing lamp normally unenergized; means operated by the motor producing an audible sound always at the same definite intervals after starting and thereafter at predetermined intervals and means for simultaneously connecting the motor and the printing lamp with the source of potential and disconnecting the safelamp therefrom, said means for connecting including manually operable means.

4. An audible timer, in combination; a normally unenergized electric synchronous motor; a source of alternating potential; a safe-lamp, said safe lamp normally connected to the source of p0- tential; a printing lamp normally unenergized; means operated by the motor producing an audible sound always at the same definite interval after starting and thereafter at predetermined intervals and means for simultaneously connecting the motor and the printing lamp with the source of potential and disconnecting the safelamp therefrom, said means for connecting including a foot operable electric switch.

5. An audible timer, in combination; a normally unenergized electric synchronous motor; a source of alternating potential; asafe-lamp, said safe lamp normally connected to the source of potential; a printing lamp normally unenergized; means operated by the motor producing an audible sound at predetermined intervals; means for simultaneously connecting the motor and the printing lamp with the source of potential and disconnecting the safe-lamp therefrom, said means for connecting including a foot operable electric switch; a normally lighted electric lamp positioned to illuminate the said foot switch and means operable by the said foot switch to disconnect the foot switch illuminating lamp simultaneously with the connection of the motor.

6. An audible timer, in combination; a normally unenergized electric synchronous motor; a source of alternating potential; a safe-lamp, said safe lamp normally connected to the source of potential; a printing lamp normally unenergized; means operated by the motor producing an audible sound at predetermined intervals; means for simultaneously connecting the motor and the printing lamp with the source of potentie! and disconnecting the safe-lamp therefrom, said means for connecting including a foot operable switch; two concealed electric lamps, normally energized from the source; two safe-light transparencies positioned to receive light radiated from the said two lamps and illuminate the foot operable switch and means for simultaneously disconnecting said two lamps from the source of potential on connecting the electric motorto the source.

7. In an audible timer, in combination; a hollow container formed of sheet; metal walls having a. broad base adapted to rest upon a floor and a partial top wall at an acute angle to the floor; a plate adapted to receive a human foot pivoted at one end to. the upper surface of the acute angle positioned top wall; an electric switch operating plunger sprin pressed upwardly extending through the acute angled positioned upper surface and positioned beneath the pivoted foot receiving member; a stop member; a synchronous electric motor positioned within the hollow container; said motor provided with an armature and an outstanding arm connected to and rotatable by the armature; a pivoted member in the path of said rotatable arm, said pivoted member having one end positioned and adapted to contact with the stop member when struck by the rotating arm whereby an audible sound is produced; said hollow container having a substantially vertical wall rising from the acute angle upper surface, said vertical wall being pierced at two points and each piercing provided with a transparency transmitting only safe light; two electric lamps, one positioned behind each transparency; a source of alternating potential; means for connecting the source of potential with electric motor, the electric lamps and the electric switch whereby the electric lamps are normally lighted and the electric motor is normally unenergized but when the foot operable member is operated the electric lamps are disconnected from the source and the electric motor is connected to the source.

8. In an audible timer, in combination; a hollow container formed of sheet metal walls having a broad base adapted to rest upon a floor and one top wall at an acute angle to the floor; a plate adapted to receive a human foot pivoted at one end to the upper surface of the acute angle positioned top wall; an electric switch operating plunger spring pressed upwardly extending through the acute angle positioned upper surface and positioned beneath the pivoted foot receiving member; a stop member; a synchronous electric motor positioned within the hollow container, said motor provided with an armature and an outstanding arm connected to and rotatable by the armature; a pivoted member in the path of said rotatable arm, said pivoted member having one end positioned and adapted to contact with the stop member when struck by the rotating arm whereby an audible sound is produced; said hollow container having a substantially vertical wall rising from the acute angle upper surface, said vertical wall being pierced at two points and each piercing provided with a transparency transmitting only safe light; two electric lamps, one positioned behind each transparency; a source of alternating potential; means for connecting the source of potential with the electric motor, the electric lamps and the electric switch whereby the electric lamps are normally lighted and the electric motor is normally unenergized but when the foot operable member is operated the electric lamps are disconnected from the source and the electric motor is connected to the source; a receptacle attached to the container for receiving a pronged plug for making electric connection to a safe lamp; a receptacle attached to the container for receiving a pronged plug for making electric connection to a printing lamp and connections within the container whereby the safe lamp is normally lighted and the printer lamp is normally unlighted and whereby an operation of the switches by the foot operable mem-- ber causes the safe-lamp to be extinguished and the printing lamp to be lighted.

KINGDON LANE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,900,311 Spear Mar. 7, 1933 2,163,419 Warren June 20, 1939 1,599,507 Abrahamson Sept. 14, 1926 1,754,204 Green Apr. 8, 1930 2,268,268 Simmon Dec. 30, 1941 2,195,255 Myers Mar. 26, 1940 2,071,173 Owen Feb. 16, 1937 1,789,044 Jauch Jan. 13, 1914