US1240749A - Time-controlled mechanism. - Google Patents

Description

M. 1., MATTHEWS. TIME CONTROLLED MECHANISM, APPLICATION FILED MAR. 12. 1917.

Patented Sept, 18, 1917.

mwym n TIME-CONTROLLED MECHANISM.

Specification of Letters Patent.

rarest-ea se is, isiv.

Application filed March 12, 1917. Serial No. 154,203.

I! '0 all whom it may concern:

Be it known that I, MILTON J. MA'rtrrinws, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in Time-Controlled Mechanism, of which the following is a specification.

My present invention pertains to timecontrolled mechanism; and it consists in the peculiar and advantageous mechanism, hereinafter described and claimed, constructed with a view to bringing about at a predetermined time the supply of fuel to a furnace, the shaking of the grate of the furnace, the opening of the bottom draft door, and the closing of the check-draft door.

In the accompanying drawings, which are hereby made a part hereof:

Figure 1 is a view diagrammatic in character and illustrating the arrangement of my novel mechanism relative to a furnace.

Fig. 2 is an enlarged elevation, taken at right angles to Fig. 1 and showing the main shaft of the mechanism and its appurtenances together with an alarm clock or other suitable clock and the connection intermediate the same and the main shaft for releasing the latter at a predetermined time.

Fig. 3 is a detail section showing the arrangement of the pawl-lever relative to the ratchet disk on the main shaft.

Similar numerals of reference designate corresponding parts in all of the views of the drawings.

The furnace 1, illustrated in Fig. l, is shown as equipped with a coal chute 2, normally closed at its outer end by a door 3, and provided with a verticallyanovable cutoff door f, the latter being located adjacent to the lower end of the chute that communicates with the fire box of the furnace. The furnace is also shown as provided with the conventional draft door 5, lever 6 adapted when oscillated toward and away from the furnace casing to actuate grate (not shown), and a check-draft door '7. lVhile these elements 5, 6 and 7 are preferably of conventional type, I do not desire to be understood as confining myself to the same,

' it being within the scope of my invention to employ corresponding elements of any descr1pt1on compatible with the purpose of my inventlon, and to transmit motlon from the oscillatory lever 6 to a grate to actuate the latter, in any approved manner.

Arranged in fixed relation to the furnace and spaced from the front thereof is a frame embodying two standards 9 and a clocksaddle 1'6, and journaled in the said standards 9 is the main shaft 8 of my novel mechanism; said shaft having one of its ends of angular formation, as shown, for the application of a key (not shown) through the medium of which the shaft is raise the weight or wind the spring employed to operate the mechanism, a weight being preferably employed for the purpose, and it being deemed unnecessary to illustrate a spring which is recognized as a full mechanical equivalent of a weight. At 10 the shaft 8 is provided with a pulley, and at 11 with a crank, the latter being connected through a pitman, Fig. 1, with the grate actuating lever 6. will also be noted by reference to Fig. 9; that the shaft 8 is provided with a ratchetdisl-I 1.3, and an aperture 12, the latter being for the connection of a certain cable 26, and the portion of the shaft adjacent to the aperture 12 being circumferentially grooved as shown to facilitate the winding of the said cable.

The clock-saddle 16 is provided with a stop 23, and the clock which is shown as secured .in the said saddle and which may be of the alarm type or any other type that is provided with an arbor adapted to be rotated at a predetermined time for which the clock is set, is provided on the said arbor with a disk 18, fixed to the arbor and provided with a plurality of apertures 19. in one of the said apertures is removably arranged the angularly-(ilisposed upper end of a link 20, the lower end of which is connected toone arm of a vertically-swinging lever 21, mounted on the saddle 16. lhe other arm of the said lever 21 is connected through a rod 22 with a pawl lever 1 1 mounted on one of the standards 9 and normally held by a retractile spring 15 in yielding engagement with the ratchet disk 13.

Connected to and designed to be wound on the pulley 1.0 is a cable 24 that is passed over overhead sheaves as shown in Fig. 1 and carries a weight 25. The cable 26, hereinbefore referred to, is likewise carried over overhead sheaves, and its end remote from the shaft 8 is connected to the cut-off door turned to I 4. A third cable 28 is passed over overhead sheaves and is connected at its ends to the draft door 5 and the check-draft door 7. This latter cable 28 is connected through a short cable 27 with theca-ble 26'.

In the practical use of my improved mechanism, the clock is wound and set for the predetermined time at which it is desired to have the mechanism operate, and

. nected to the disk 18 so as to establish connection between the said disk and the pawllever 14; which normally engages the ratchet disk 13 and thereby prevents casual rotation of the main shaft 8 under the gravitation of the weight.

With the mechanism set as described in the foregoing, it will be manifest that at the time for which the mechanism is set, the disk 18 will be rotated and through the link 20 will raise one arm of the lever door 7 will be permitted to gravitate to a closed position. Also by reason of the r0- tation of the shaft 8, the g ate lever 6 will be oscillated and the grate (not shown actuated. Thus without the presence of an attendant, the furnace will be made to raise the temperature of the air in a dwelling or other building, at a time when it is desired for the dwelling or other building to be- .come warmer, as in the morning.

.7 in order to impart a full, clear and exact understanding of the said embodiment. I do not desire, however, to be understood as confining myself to the said specific construction and relative arrangement of parts, as in the future practice of the invention such changes or modifications may be made as fairly fall with-in the scope of my appended claims.

Having described my invention, What I claim and desire to secure by Letters-Patout, is:

1. 111: means for the purpose described, the

combination of a gravitating draft door of a furnace, a gravitatin-g check-draft door also complementary to a furnace, a gravitatisng' door for controlling the supply of fuel; to a furnace, sheaves located in a horizontal plane above the check-draft door, acable passed over said sheaves and extending between and connected to the gravitating draft door and the gravitating check-draft door, a third sheave, a cable connected to the fuel-controlling door arndpassedover the last-named sheave, a branch cable con=nect.-

ing: the said cables at a point below the sheaves,wand means for taking up the cable that is passed over the last-n-amed sheave- 2. In means for the purpose described, the

combination of a grate-actuating lever, sup.

porti n-gme'ans, a shaft jiournaled in the latter means and having a ratchet disk, a crank on said shaft, a pitinarr intermediate said CRIB; and the grate-actuating lever, means connected witlrthe shaft for rotatingt'he samewhen it is released, a pawl lever mounted onthe supporting means and yieldingly maintained in engagement with the ratchet dish, a clock mounted on the supporting means and having a disk adapted to be revolved at a predetermined time and also having apertures in said disk off the center thereof, a vertically-swinging lever on the supporting means, a connection between one arm of said lever and the pawl lever, and a link connected to the other arm 'of the vertically'swinging lever and. having an angularly disposed end portion adapted for removable arrangement in one of the apertures of the disk.

- In testimony whereof I have hereunto set my hand in presence of two subscribing wit:-

nesses.

MILTON J. MATTHEWS. Witnesses: V

ROBERTA Brown, Norman J. RICE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner o'fPatents. Washington, 1L0.

Images