US1080541A - Vacuum-alarm. - Google Patents

Description

L. D. COPELAND.

VACUUM ALARM.

APPLICATION FILED MAR.21,1913.

Patented Deo. 9, 1913.

v mvENToR ATTORNEYS WITNESSES COLUMBIA PLANOGHAPH to.. WASHINGTON. n. c.

LUCIUS D. COPELAND, 0F CAMDEN, NEW JERSEY.

VACUUM-ALARM.

Specification of Letters Patent.

Patented Dec.!),1913.

Application filed March 21, 1913. Serial No. 755,911.

To all 'whom t may concern:

Be it known that I, LUcIUs D. CornnANn, a citizen of the United States, residing at Camden, county of Camden, State of New Jersey, have invented a new and useful Vacuum-Alarm, of which the following is a specification.

My invention consists of a device for producing an alarm in vacuum apparatus when the vacuum decreases beyond a certain predetermined point.

It further consists of such a device in which the valve which controls the signal is held in its closed position by the suction of the vacuum against a predetermined and adjusted opposite pull.

It further consists of other novel features of construction all as will be hereinafter fully set-forth.

The annexed drawings and the following description set forth in detail one mechanical form embodying the invention, such detail construction being but one of various mechanical forms in which the principle of the invention may be used.

Said annexed drawing represents a partly diagrammatic and partly sectional view of as much as will illustrate one embodiment of my invention and its connections.

Referring to the drawings, the reference numeral 1 indicates a vacuum creating device, such as a turbine or rotary fan, or any other pump or suction device, which is connected by a pipe, 2, to a vacuum tank, 3. A cylindrical chamber, fi, is suitably supported, and has a head, 5, into which a pipe, 6, enters and is connected to the vacuum pipe, and which head forms a seat upon its inner side. A valve, 7, fits upon said seat and is secured by a coupling, 8, to the end of a rod, 9, which 1s guided in a tube, 10, secured at its end in the opposite head, 11, of the cylinder', to extend axially in the latter. Said last-referred to head has a cylindrical casing, 12, in whichn is a spring, 1B, which bears against the inner end of the reasing and against a nut, 14e, upon the threaded end of the rod and guided in the casingi In connection with the parts just described, I desire to employ a signal or alarm, which will be actuated when the valve 7 falls or is released by the vacuum, and which alarm or signal may be of any suitable construction and actuated in any desired manner. As here shown, I have provided a signal 15 capable of being actuated by suction,

which communicates with the cylinder. I preferably desire to place a lnanually operated valve 1G in the pipe G in order that the communication from the vacuum tank 3 to the cylindrical chamber' Il; may be controlled, since it will be apparent that when the vacuum 4e falls or is below the desired or predetermined point, the alarm .l5 would be constantly actuated, unless the communication were cut oil.

lVhen I desire to bring the device into operation and the vacuum has been created in the tank 3, I open the valve 16 and elevate the valve 7 by hand to bring the same against its seat, whereupon the suction of the vacuum will hold the valve to its seat against the tension of the spring as long as the predetermined vacuum is maintained. If, however, the vacuum decreases, the spring or its equivalent means, will draw the valve from its seat, and the movement thereof will actuate the alarm signal and call attention to the decrease or fall of the vacuum. In the construction illustrated, as soon as the valve 7 is removed from its seat, suction is created within the cylinder 4L, which will actuate the alarm signal, as previously stated. The tension of the spring is adjusted according to the degree of vacuum at which the alarm is to be actuated. It will be further understood that any means which will accomplish the same results may be substituted, or employed, for the spring described, and that any audible or visual alarm, arranged to be actuated by any means, at the proper time, may be employed.

Other modes of applying the principle of my invention may be employed for the mode herein explained. Change may therefore be made as regards the mechanism thus disclosed, provided the principles of construction set forth, respectively, in the following claims are employed.

I-Iaving thus described my invention, what I 'claim as new and desire to secure by Letters Patent, is

1. In a device of the character stated, a chamber provided interiorly with a valveseat, an exterior suction-pipe open to said seat, a valve fitting said seat and having means for opening it against the suction through said pipe, and an alarm-signal communicating with said chamber and adapted to be actuated by suction from within said chamber.

2. In a device of the character stated, a

chamber provided interiorly with a valveseat, an exterior suction-pipe open to said seat, a valve fitting said seat, adjust-able means for yieldingly drawing said valve from its Seat, and an alarm-signal communicating with said chamber and constructed to be actuated by suction from Within said chamber.

3. In a device of the character stated, a cylinder having a valve-seat on the inside of one of its heads, an exterior suction-pipe open to said seat, a valve litting said seat, an adjustable spring dra-Wing said valve from its seat, and an alarm signal communicating with said cylinder and constructed to be actuated by suction from Within said chamber.

4. In a device of the character stated, a cylinder having a valve-seat on the inside of one of its heads, an exterior suction-pipe open to said seat, an axial tube in said cyl* ind-ei` and secured in the opposite head of the same, a rod slidable in said tube, a valve on the end of said rod and fitting the valveinder open to said seat, an axial tube in said cyland secured in the opposite head of the same, a casing on the outside'of said head, a valve fitting the seat, a rod carrying said valve and slidable in said tube and casing and having a threaded Outer end, a spring on said rod Within the casing, a nut upon the threaded end of the rod and bearing against the spring, and an alarm-signal communicating with said cylinder and constructed to be actuated by suction from Within said chamber.

LUCIUS D. COPELAND. Witnesses:

C. D. MOVAY, F. A. NEWTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C.

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