US408152A - Apparatus for charging and drawing furnaces - Google Patents

Description

(No Model.) 3 Sheetw-Sheet 1. S. T. WELLMAN.

APPARATUS FOR CHARGING AND DRAWING FURNACES. No. 408,152. Patented'July 30, 1889.

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APPARATUS FOR CHARGING AND DRAWING FURNACES. No. 408,152. Patented July 30, 1889.

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APPARATUS FOR CHARGING AND DRAWING FURNAUES. No. 408,152. Patented July 30, 1889.

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UNITED STATES PATENT OFFICE.

SAMUEL T. VELLMAN, OF CLEVELAND, OHIO.

APPARATUS FOR CHARGING AND DRAWING FURNACES.

SPECIFICATION forming part of Letters Patent No. 408,152, dated July 340, 1889. Application filed December 26, 1888. Serial No. 294,578. (No model.)

To all whom it may concern.

Be it known that I, SAMUEL T. WELLMAN, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Apparatus for Charging and Drawing Furnaces; and I do hereby declare the following to. be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in apparatus for charging and drawing furnaces; and it consists in certain features of construction and in combination of parts hereinafter described, and pointed out in the claims.

In the accompanying, drawings, Figure 1 is a plan. Fig. 2 is an end elevation of the car, the same being a side elevation of the charging and drawing mechanism mounted crosswise on the car. Fig. 8 is an elevation showing the rear side of the car, and consequently showing the rear end of the charging and drawing mechanism. Fig. 4 is an elevation, partly in section, on line 08 00, Fig. 1. Fig. 5 is an enlarged detail, the same being an elevation partly in section.

A A are widely-separated track-rails, on which operates a traction-car A, the latter having mounted thereon reversing-engines B, for propelling the car along the track, a steampump 13, for supplying water under pressure to the different rams hereinafter mentioned, and a steam-boiler B for supplying the motive power to the aforesaid engines and pumps. The engine-shaft has a pinion Z), engaging a gear A on one of the car-axles, and as the pump, boiler, and engines may be of ordinary construction no further description of these is considered necessary.

a a are parallel eye-beams extending crosswise of the car and constituting a part of the frame-work of the car, these eye-beams also serving as ways on which the frame next above reciprocates. This upper frame consists in the main of side pieces, usually eyebeams or channel-bars OC, rigidly connected, and this part of the device is hereinafter mentioned in the specification as frame 0. The rear end of this frame has a lateral axle O, on which are mounted flanged wheels 0 these wheels traveling on the ways a a aforesaid. Plates or yokes 0, depending from the rear end of frame O, support wheels 0, the latter engaging the under side of ways a a to hold the rear end of frame 0 from lifting in case the frame should be overbalanced by the load.

D is an upright water cylinder or ram located at or near the front side of the car and between the line of ways a a, the plunger D thereof having attached a lateral axle D on which axle are mounted the flanged Wheels (Z. \Vheels cl support the forward end of frame O, and by operating this ram frame 0 is tilted, the forward end of the frame being raised or lowered, as required.

E is a horizontal water-cylin der, located between ways Ct a, as shown, the piston-rod E of this cylinder being connected by a lateral pivotal pin with yokes c of frame 0. By operatin g this ram, frame O is reciprocated endwise. Meantime the frame may be tilted to the position required.

F is a large hollow shaft forsupporting the tong's. This shaft extends lengthwise of frame 0, and is journaled in suitable boxes 0 connected with this frame, so that the shaft may turn on its axis. The shaft at the forward end thereof has laterally-projecting ears f, that are embraced by corresponding flanges g of levers G, the latter constitntin g the tongs for grasping the load -for instance, for grasping ingots K.

H is a short water cylinder or ram for opening and closing the tongs, this cylinder being connected with frame 0 and located in line with and at the rear end of shaft F. The pistonrod II of this cylinder is connected with an extension-rod H the latter operating in the-bore of shaft F. Rod H is 0011- nected by key it with sleeve 1, the latter being mounted loosely on shaft F, so that the sleeve may reciprocate on the shaft. Key 72. operates in a long slot f of the shaft F. Sleeve I has pivoted thereto link 2', the latter in turn being pivoted to the rear end of the respective levers G. By operating ram H the tongs are opened and closed and held in position grasping the ingot or load. 111 Fig. 1 the tongs are shown in position open. It is evident that by drawing sleeve I rearward the links will force apart the rear end of levers G and close the tongs.

In heating ingots, especially when the ingots are of large sizc,.it is desirable and sometimes essential to turn the partially-heated ingot-bottom upward in order to distribute the heat more evenly throughout the ingot. 5 For this purpose shaft F, bearing the tongs and load, is rotated on its axis, preferably by means of the following described mechanism, to wit: Shaft F has rigidly mounted thereon a spur gear or pinion F, engaging rack J of cylinder J. This cylinder reciprocates on a stationary hollow piston-rod j, the rod eX- tending out at either end of the cylinder and being supported at the extremes by brackets C of frame 0. Piston-rod j is, in fact, a tube 5 having attached at the longitudinal center thereof piston j, the tube having ports or holes 3' on either side of and close to the piston, the bore of the tube being plugged between the ports or two series of holes. The

0 water for operating cylinder J is alternately admitted and exhausted through the respective ends of the hollow piston rod or tubej. By operating cylinder J shaft F is rotated, as required, to reverse the ingot or load.

5 I will remark that the piston and pistonrod H of cylinder l-I may turn in this cylinder or the piston-rod, or the extension-rod H may be constructed to turn in the connecting-sleeve h, whichever construction may be 0 preferred.

The pipes leading from the pumps to cylf nders D and E and the pipes leading from these cylinders to the exhaust-tank of the car (not shown) may be stationary. The pipes 5 leading to and from the different cylinders of the movable frame O-to wit, cylinders H and Jare jointed, as shown at 'm, m, and m the swinging legs M and M thereof of the respective lines of pipes being of sufficient 0 length to accommodate the end movement of frame 0 by collapsing and distending these legs of the pipes.

The different valve-handles N of the respective pipe-lines, and also the hand-lever n,

.5 connected with the reversing-lever of the e11- gine, are all arranged, as shown, in convenient proximity to the operator occupying seat P. A tank (not shown) may be attached under the car or elsewhere for receiving the ,0 water discharged from the different rams aforesaid and for supplying the pumps B and for supplying the feed-water to the boiler. Such tank can be replenished from time to time at some convenient point along the route 5 of the car, or a flexible tube may be employed for the purpose, the one end thereof being permanently attached to the car, such flexible tube" and attachment suitable for the purpose having been made the subject of Letters 1) Patent.

the novel features of the same will, it is believed, be readily understood, more especially as analogous apparatus for such purpose has already been the subject of Letters Patent.

To recapitulate: By operating engines B the car is propelled along the tracks, the car being stopped opposite the furnace that is to be charged or drawn, or opposite the table of the reducing-rolls whereon the heated ingots are laid, or opposite acar or other appliance, by means of which the ingots to be heated are brought within reach of the tongs. By operating ram D frame C, bearing the tongs, is tilted, as required, in raising or lowering the load. By operating ram E frame 0 is moved endwise, as required, for instance, in picking up an ingot that is to be heated, charging the same into a furnace, or drawing the same from a furnace and depositing the heated ingot on the table of the reducing-rolls. By operating ram H the tongs are opened, closed, and held closed while carrying the load. By operating ram J the tongs are reversed to turn the load bottom upward. The different hydraulic rams are not necessarily operated by water, although a liquid is preferable for heavy work. For light work, and especially where quick movements are required, any or all of these rams may be operated, for instance, with steam or compressed air, and in some instances these agents are preferable to a liquid. If steam is used in the different rams, the pumps B may be dispensed with, in which case the different systems of pipes leading to the rams may connect with the steam-boiler B If compressed air is employed, an air-compressor takes the place of the pump.

Various modifications may be employed without departing from the spirit and purpose of my invention-for instance, a stationary cylinder and movable piston-rod, the latter having attached a rack or other appliance for reversing the ton gs, or a rotary motor mounted on or intergeared or operatively connected with shaft 1 From the description hereinbefore given and the accompanying drawings the necessary modifications, according to circumstances, will be readily suggested to a mechanic skilled in the art.

What I claim is 1. In combination, a car having mounted thereon apparatus for charging and drawing furnaces, a steam-pump for operating the different motors of such apparatus, and a steamgenerator for supplying motive power to such pump, substantially as and for the purpose set forth.

2. In combination, 'a traction-car having mounted thereon an engine for propelling the car, steam-generator, and apparatus for charging and drawing furnaces, substantially as set forth.

3. In combination, a traction-car having mounted thereon engine for propelling the car, steam-pump, steam-generator, and mechanism for charging and drawing furnaces, the

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different devices being operatively connected, substantially as set forth.

4. In combination, a traction-car having mounted thereon engine for propelling the car, steam-pump, steam-generator, and apparatus for charging and drawing furnaces, these devices being operatively connected, and the levers for operating the different motors being assembled within reach of the operator when occupying his seat on the car, substantially as set forth.

5. Reversible tongs, the same being mounted on a rotating shaft or trunnion, whereby the tongs are reversed by turning such shaft or trunnion on its axis, substantially as set forth.

6. The combination, with reversible tongs mounted on a hollow rotating shaft, of a reciprocating rod operating in the bore of such shaft, such rod being connected by means of sleeve and links with the tongs for opening and closing the latter With reverse move ments of such rod, substantially as set forth.

7. The combination, with a reciprocating frame, of reversible tongs mounted on such frame, substantially as set forth.

8. The combination, with reciprocating tilting frame, of reversible tongs mounted 011 such frame, substantially as set forth.

9. The combination, with reciprocating frame, tongs, and water-motors mounted on such frame for operating the tongs, of jointed so-called walking-pipes connected with such motors, the arrangement being substantially as indicated, whereby the jointed pipes rray accommodate themselves to the movements of such motors by distendingand collapsing the legs of such jointed pipes, substantially as set forth.

10. The combination ofreversible tongs mounted on a hollow rotating shaft With hydraulic ram set in line with such shaft and connecting mechanism, substantially as inclicated, whereby the ton gs are opened and closed by reverse action of such ram, substantially as set forth.

11. The combination of reversible tongs mounted on a rotating shaft or trunnion with motor operatively connected with such shaft for rotating the latter, substantially as set forth.

12. The combination, with reversible tongs mounted on a rotating shaft, such shaft bearing a spur gear or pinion, of Water-motor op'eratively connected with a rack, the latter engaging such gear or pinion for rotating the shaft, substantially as set forth.

13. The combination, with rotating shaft having mounted thereon tongs and toothed wheel, substantially as indicated, of watercylinder bearing a rack for engaging such toothed Wheel, such cylinder being mounted and adapted to reciprocate on a stationary piston-rod, substantially as set forth.

14. In combination, arotating shaft bearing tongs and toothed wheel, reciprocating watercylinder bearing a rack forengaging such toothed Wheel, a hollow piston-rod for supporting such cylinder, a .piston mounted on such hollow rod and operating inside the cylinder, and the ports in the rod located 011 either side of the piston, substantially as set forth.

In testimony whereof I sign this specification, in the presence of two Witnesses, this 8th day of December, 1888.

SAMUEL T. YVELLMAN.

lVitnesses:

CHAs. H. DORER, ALBERT E. LYNCH.

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