US855046A - Starter for blowers. - Google Patents

Description

'PATENTED MAY 28, 1 907.;

1.. "B. GOUSANS.

- STARTER FOR BLOWERS.

APPLIOATION FILED DEO.17. 1904. RENEWED APR. 22, 1907.

2 SHEETS-SHEET 1.

-lllllllllk INVENTOR:

' By Afzameys,

w Twgs g Kim 855,046.

P A'I 'ENTED MAY 28, 190].

L. B GOUSANS. STARTER FOR BLOWBRS A .PPLIOATION PI/LED DEO.17, 1904. pmmwnn APR. 22, 1907.

2 $HEETS-SHEET 2.

- INVENTOR:

By A ltameys,

WGP

WITNESSES:

UNITED STATES PATENT OFFICE.-

LOUIS BERTRAMYCOIUSANS, OF LINCOLN, ENGLAND.

STARTER FOR BLOWERS.

Specification of Letters Patent. Application filed December 17, 19 04. Renewed. April 22, 1907. S rial No- 369.679.

Patented-m as, 1907.

To all! whom it may concern:

Be it known that I, LOUIS. BERTRAM CoUsANs, a subject of the, King of Great rent. motors, it is necessary toadmit the cur ically. It is onl rent gradually to avoid burning'out fuses or worse damage. This is usually accomplished'by' meansof a rheostat which gradually cuts out certain resistances in the circuit in a well known way. 'The operator has to move the arm of the rheostat slowly from the cut-off point to the point of maxi-- mum current. When the blower is to be stopped the arm of the rheostat mustbe thrown back entirely to the zero position. For the pur use of organ blowingit is cus tomary to p ace the motor at some distancefrom the organ, often in another room, chiefly to avoid any noise from the blower interfering, with the music. Sometimes it is placedin such situations that the'o erator has. not-access-to the rheostat direct y, but only through a lever and cord or other trans-' mission device. 7 Again, organ players are often not sufficiently versed in machinery to appreciate the necessity of operating the rheo stat slowly.

According to. the present invention there is provided a starter for ablower in which the current is gradually increased automatnecessary for the operator to swing the ever of an ordinary switch. The switch may be, located adjacent to the key-board of the organ, while the rheostat and blowing apparatus are located at any desired distance. -Preferabl 'also'meansare provided for suddenly shifting] the rheostat to its position'of maximumresistance-from its ordinary working position, so that the. motor must always start'wi'th 'a-minimum flow of current. Theprheostatis preferably controlled pneumatically, theblower pro: viding the necessary air pressure.

Certain other imp 'ovements are referred to in detail hereinafter. i

The accompanying drawings'illustrate an embodiment of the invention.

Figure 1 illustrates a com lete plant, they blower, motor and rheostat eing arranged immediately inthe rear of the organ for the sake of convenience in illustration. Fig. 2v is a diagram-of the electric circuits. Fig. 3

is a central, vertical. section through the pneumatic device for controlling the theostat, showing the same in the running position. Fig. t is a view. of the same mechanism in idle position. Fig. 5 is an end: view of the relief valve,

' Referring now to the embodiment illus-y trated, A represents an organ'having at'its back a wind chamber B. r

C is ablower. discharging into the wind chamber of the organ through the tr Jlk D and operated by means of anelectro-motor v 1 E. The current to the-electro motor is controlled by means of arheostat F and a hand: switch G adjacent to the key-board. The

rheostat in turn is controlled by a-pneumatic apparatus, indicated as, a whole by the letter H, and which is supplied with air under pressure slowly through the branch J from the trunk D; The electric circuit passes from a source K thro'ugh the switch G to the arm L of the rheostat, and thence to one or other of the contacts M, and through a corresponding number of resistance coils N tothe brushes of the motor E, and thence back to the source of current. An electromagnet N is'introduced into a branch circuit for sud denly releasing the rheostat arm in the manner hereinafter explained. The -rheostat contains no cut-0d point, and in that respect differs from the ordinary rheostat. When the motor is not running therheostat is in the position to introduce the maximum number of resistance coils in the circuit. The

only break in the circuit is atthe switch G.

'When the switch is closed a minimum current flows to the motor, and airis slowly pumped through the trunk D and. through;

the branch J into the rheostat-controlling apparatusI-I. The; "pipe J is'preferably mad'e small to insure a slow a mission of pressure a to the, .apparatus he pressure then forces the armLof the rheostat toth'e next contact .point, whichresults in an increased speed of the motorand an increased pressure of a1r,'wh1ch in turn results in movmg the rheostat arm forward- Thus the action is continued until themaximum speed and; pressure are. obtained. When the switch G is opened-the air in the apparatus H escapes, preferably by. a "special quick-escape -mechthe rheostat drops to its original position. 5

The casing or .box of the apparatus H carries within it a bellows '0, the bottom of e which 'is connected by means of a link P with anism, and the arm L. of

- eaaoee L of the 'rheostat. Air enters the stat R; at the same time it prevents arush of oox H through a flap valve Q opening in air from the box H to the rear of the diaward to force upward the bellows. lhe air phragm S, which might resist the opening of from the box H escapes through the outlet R i the passage through X. i byway of a diaphragm valve S. Though I have described with great par- (n; T is a handvalve for regulating the openticularity of detail certain cnil'iodiments of i ing of the inlet and determining the rapidity nrv invention, yet it is not to be undcrstoml with which the rheostat is operated. that the invention is limited to the specific A pipe or box U is arranged in the rear of constructions illustrated. Various modifithe diaphragm S, and has onits under side a cations thereof in detail and in the arrangclarge valve V which forms in cil'ect the movment and combination of the parts mav be able armature of an electro magnet whose made by those skilled in the art without dccoil is indicated at N. A barof iron W is arparturo from the invention. ranged across the poles ofthe magnet at op- What I claim is: posite ends to the armature V, for the vpur- 1. The combination with an elcctricallvpose of weakening the strength of the pull driven organ blower, of a switch for making upon the armature when it is desired to drop and breaking the electric circuit, a rheostat the latter. controlling the current in use, and a pncu As soon as the switch is. closed the current matic apparatus H controlling said rhcostat, passes through the electro magnet N" and said apparatus having a main chamber rc- 8o closes the valve V. The motor operates at ceiving air from'the blower, a diaphragm S the same time, and air at a low pressure is in-' closing the outlet of said chamber and held 'troduced throu h the pipe J. This air closed by air pressure on its rear face, and an presses'against the back of the diaphra m S, electricallvoperated valve V for releasing Where (as soon as the diaphragm c oses) the pressure at the rear of said diaphragm there is a greater area exposed than from the when the current is cut off.

opposite side, and the diaphragm is thus held 2. The combination with an electricallyressed against the seat X to close the opendriven organ blower, of a switch for making 7 ing therethrough; The first air entering the and breaking the electric circuit, a rheostat small chamberat the back of the diaphragm controlling the current in use, and a pneu- 9o closes the latter, after which the entire back matic apparatus H controlling said rheostat, of'the diaphragm remains exposed to at least said apparatus having a main chamber reas high a pressure per square inch as exists at ceiving air from the blower, a diaphragm S the front, while the exposed area at the front closing the outlet of said chamber and held is limited to the area of the opening X. The closed by air pressure on its rear face, an clc'c- 9 5 air at the sametime passes through the flap trically-operated valve V for releasing the Valve Q into the box, and gradually lifts the pressure at the rear of said dia hragm when bottom of-the bellows. This operation 0011- the current is cut oif, and a c leek-valve Q tinues, thepressure within the box H becornopening inwardly into said chamber. ing reater untilthe maximum is reached, 3. The combination with an organ having whic is maintained as long as the switch is a wind chamber B, of an electricall 'driven closed. As soonas the switch is opened the blower C therefor, a switch G for making and current is cut off from the electro magnet ,N, breaking the electric circuit, a rheost at G at and the valve V.drops,.0 ening a large space. a distance from said switch and controlling The pressure behind t 16 diaphragm S isv the current in use, and a pneumatic apparadecreased, the opening of the valve V being tus H controlling said rheostat, having a such as to release the pressure faster than it main chamber connected by a pipe J with the y can be admitted from the pipe J. The flap blower, an outlet diaphragm valve S from valve Q closes, and the pressure in H forces said chamber normally held closed by air outward the diaphragm S in the manner indiressure on its rear face, and a v alvc V for re 1 1o cated in Fig.4, and the air escapes freely easing the pressure of said valve Swhen the through the opening R, dropping the rheocircuit is opened. stat arm L to its lowest osition suddenly. In witness whereof I have hereunto signed The usual magnet for holr ing the arm of the my name in the presence of two subscribing rheostat in its elevated position is not needed, witnesses. the pressure in the box'H serving this pur- LOUIS BERTRAM COUSANS pose. The non-return valve Q by its closmg W cuts off the box from any residual air pres- VV 1tnesses: sure which might come from the pipe J, and RICHARD Wnsracorr, 60 which might retard the dropping of the rheo- H. D. JAMESON.

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