US1739836A

US1739836A - Furnace

Info

Publication number: US1739836A
Application number: US210056A
Authority: US
Inventors: Hansen August Olaf
Original assignee: Int Comb Eng Corp
Current assignee: International Combustion Engineering Corp
Priority date: 1927-08-02
Filing date: 1927-08-02
Publication date: 1929-12-17
Anticipated expiration: 1946-12-17

Description

Dec. 17, 1929. 'A. o. HANSEN f 1,739,836

FURNACE Filed Aug. 2, 1,927 2 sheets sheet 1 A TTORNEYS.

Dec. 17, 1929.

A.O.HANSEN FURNACE Filed Aug. 2, 1927 2 Sheets-Sheet 2 ATTORNEY Patented Dec. 17, 1929 warren stares PATENT OFFECE AUGUST OLA]? HANSEN, OF NEW YORK, N. Y., ASSIGNOR TO INTERNATIONAL COMBUS- 'lION ENGINEERING CORPORATION, OF NEW YORK, N. Y., A. CORPORATION OF DELA- WARE Application filed August 2, 1927. Serial No. 210,056.

My invention relates to furnaces and has special reference to fuel feeding rams for casing,

furnaces.

An object of the invention is to provide a novel and improved fuel feeding ram.

Another object of the invention is to provide a device of this character which may be easily controlled to vary the fuel feeding action thereof. I

. The several features of the invention, whereby the above mentioned and other objects may be attained, will be clearly understood from the following description and accompanying drawings, in which:

Figure 1 is a side elevation, partly in section, of a portion of a furnace embodying the features of the invention in their preferred form;

Fig. 2 is a sectional plan view on an enlarged scale taken on the line 22 of Fig. 1;

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 2;

Fig. 4 is a view corresponding to Fig. 3, but showing parts of the ram in a difierent posi' tion;

Fi 5 is a transverse sectional view taken on the line 5-5 of Fig. 3; and

Fig. 6 is a detail view in perspective of a component part of the controlling mechanism of the ram.

The furnace illustrated in Fig. 1 of the drawings, is provided with a combustion chamber 2, a fuel hopper 4, a fuel pushing ram 6 for feeding the fuel into the combustion chamber of the furnace, a ram casing 8 having an inlet opening 10 through which fuel from the hopper may pass into the ram and a motor shaft 12 and suitable connections comprising a connecting rod 14, hav' ing one end connected with the ram, for reciprocating the ram. V

Except as hereinafter described, the parts above referred to may be and preferably are of a well known construction.

-In,accordancc with myinvention the fuel feeding ram 6 is made in two

sections

16 and 18 that extend longitudinally and are arranged one upon the other. The upper section 16 is connected by a wrist pin 20 with the connecting rod 14 so as to be reciprocated thereby. The two sections of the ram are adapted to be connected and disconnected. When they are connected they reciprocate to-. gether, and thus effect the maximum feeding of the fuel. When they are disconnected the lower section is held stationary and serves as a support on which the upper section slides,

of the free end of the pawl 22 is limited by means of a stop lug 28 thereon which engages a lug 30 on the upper ram section 16. When the

ram sections

16 and 18 are connected, the tooth 32 of the pawl engages the rear side of a latch block 34 formed on a locking bar 36 which is mounted to slide in a suitable guideway 38 in the lower ram section 18. The rear portion of the lower ram section 18 is provided with a cored out upwardly opening recess 21 for receiving't-he pawl 22. The pawl 22 by engagement with the rear side of the latch block 34 causes the lower section of the ram 18 to move with the upper section during the retracting movement of the latter section. The lower section is caused to move with the upper section during the feeding movement thereof, by means of a shoulder 40 on the upper section that engages a shoulder 42 on the lower section. Thus, it will be apparent when the pawl 22 is in looking engagement with the block 34 that the lower ram section will be connected to move with the upper section during both the retracting and fuel feeding movements of the upper section. The ends of the locking bar 36 extend through clearance slots 44 in the ram casing 8 and one end of the bar is provided with a handle 46 by means of which the bar may be pulled outwardly a suflicient distance to withdraw the latch block 34 from beneath the locking pawl 22 whereupon the lower ram section will be disconnected from the upper section. The outward movement of the lockstop pin'4;8.on the end of the bar oppositet-he 1 handle 46*with the corresponding side of the lower ram section18.

v To connect the lower ram'section 18 with the up er section, the locking bar 36 is ushed inwardly until the inner end of the late block 34 engages one side wall of the recess 21 which positions the latch block in the path of the free end of the locking pawl 22, whereupon,

during the next feeding movement of the upper ram section, the end of the pawl will ride up over an inclined surface 52 on the block 34 so as to permit the tooth on the pawl 5 to drop down into latching position over the rear side of the block.

It may be noted that the locking-bar 36 may be shifted longitudinally to connect and disconnect the two ram sections during the 0 fuel feedin movement of the upper section. Also, that the engagement of the cooperating

shoulders

40 and 42 during said movement of the upper section will advance the lower section to its innermost position which is directly beneath the inlet opening 10 in the ram casing. The lower section is held from further inward movement by the engagement of the ends of the locking bar 36 with-the rear end walls of the slots'44 through which they 30, extend. With the lower section thus positioned all of the fuel thereafter entering the ram casing will drop down upon the top surface of the lower section and be fed into the furnace by the upper section.

With this construction it will be apparent, for a given speed of the driving mechanism of the fuel pushing ram that with the lower section connected to the upper section,.the

fuel displacement of the combined plunger area is available for pushing in the maximum quantity of fuel, and also when the lower section is, disconnected from the upper sec-.

tion it maintains its position at the inward.

end of its 'strokeand the upper section functions alone to feed the fuel into the furnace. Thus, an extremely simple device isprovided which may be easily controlled by the operator to vary the amount of fuel fed into the combustion chamber different conditions.

The ram casing is provided with openings 54, and the lower wall of the upwardly opening recess 21 of the lower ram section is provided with an opening 56 which is located di rectly beneath the free end of the latching pawl 22 when the pawl is in locking position. The opening 56 is adapted to register with the openings 54 when the lower sectionis in tions without departing from the spirit thereof or the scope of the appended claims.

of the furnace to meet' either its extreme inward or retracted posi-- What I claim is:

1. A fuel feeding ram for-a furnace having, twofuel ushing sections relatively movable longitudinally, means for longitudinally reciprocating one of said sections with relation to the other-to feed the fuel, and means under the control of the operator for operatively connecting the other ram section to and disconnecting it from the first mentioned section. A I

2. A fuel feeding ram for a furnace having, two fuel pushing sections relatively movable longitudinally, and means under the control of the operator to either reciprocate longitudinally both of said sections together or to reciprocate longitudinally one ofv said sections while the other is held stationary.

3. A fuel feeding ram for a furnace having, two fuel pushing sections arran ed one above the other and relatively mova le longitudinally, means for longitudinally reciprocating the upper section with relation to the lower to feed the fuel, and means under the control of the operator for opzratively connecting the lower section to an disconnecting it from the upper section.

4. A fuel feeding ram for a furnace having, two fuel pushing sections arranged one above the other and relatively movable longitudinally, means for longitudinally reciprocating the upper section with relation to the lower section to feed the fuel, and means adapted to be controlled by the operator for operativel'y connecting the lower section to and disconnecting it from the upper section when the sections are substantially at the limit of their fuel feedin movement.

' 5. A fuel feeding ram or feeding fuel into a furnace having, two fuel pushing sections arranged one above the other and relativel movable longitudinally, means for longitudiylol nally reciprocating the, upper section with relation to the lower to feed the fuel into the furnace, cooperating shoulders on said sections adapted to engage during the fuel feeding movement of the upper section to cause said sections to move together during said movementfand a ratchet device'adapted to be thrown into and outof operation by the operator to operatively connect the lower section to the upper section tocause the lower section to move with the upper section during the retracting movement 0 the latter.

6. A fuel feeding ram for feeding fuel into a furnace, having two fuel pushing sections arranged one above the other and relatively movable longitudinally, means for longitudinally reciprocating theupper one of said sections with relation to the other to feed the fuel into the furnace, and means under the control of the operator during the operation of the upper section for operatively con necting the lower section to and disconnectin it from the upper section.

. A fuel feeding ram for feeding fuel from a hopper into a furnace in which the ram casing is provided with an inlet opening for' 7 permltting fuel to pass from the hopper into said casing, having two fuel pushing sections arranged one above the other and relatively movable longitudinally, means for longitudinally reciprocating the upper section with relation to the lower section to feed the fuel into the furnace, and means for operatively connecting the lower ram section to and disconnecting it from the upper ram section, the two sections when at the limit of their fuel feeding movement being positioned directly, beneath said opening in the ram cas- Gil ing, and the lower section being maintained in this position when disconnected.

8. A fuel feeding ram for feeding fuel into a furnace having two fuel feeding sections relatively movable longitudinally, means for longitudinally reciprocating one of said sections with relation to the other to feed the fuel into the furnace, and means under the control of the operator during the operation of said reciprocating section for operativelyconnecting thereto and disconnecting therefrom the other section.

In testimony whereof, I have signed my name to this specification this 29th day of July, 1927.

AUGUST OLAF HANSEN.