US851253A - Fuel-feeding device for boiler-furnaces. - Google Patents

Description

PATENTED APR. 23, 1907.

J. & W. REAGAN. FUEL FEEDING DEVICE FOR BOILER FURNACES.

APPLICATION FILED JULYG. 1906.

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J. & W; RBAG-AN.

FUEL FEEDING DEVICE FOR BOILER FURNACES. APPLICATION FILED JULY a. 1906.

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UNITED STATES PATENT OFFICE.

JAMES REAGAN AND WILLIAM REAGAN, OF PHILADELPHIA, PENN- SYLVANIA.

Specification of Letters Patent.

Patented April 23, 1907.

Application filed July 6,1906. Serial No. 324,989.

To all whom it may concern.-

Be it known that we, JAMES REAGAN and WILLIAM REAGAN, citizens of the United States, and residents of the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Fuel-Feeding Device for Boiler-Furnaces, of which thefollowing is a specification.

Our invention relates to feeding fuel Inechanically to boiler furnaces whereby the same is supplied to the furnace; at short or long intervals, in such quantities as the furnace may demand to maintain a bed of fuel of uniform thickness for proper combustion.

Our invention consists of a series of pushers arranged to reciprocate and to start and stop automatically beneath a hopper located on the boiler front, by means of which a certain quantity of fuel is projected forward on to the dead plate and thence to the grate, motion being communicated to the saidpushers by means of a driven shaft; upon which is located a time feed arranged to permit a fast or slow movement or a slight pause as occasions may require.

Reference is. had to the accompanying drawings in which,

Figure 1, is a front elevation of the machine. Fig. 2, is an end view of same. Fig. 3, is a transverse section of same, showing the upper portion of an inclined grate, connected therewith. Fig. 4, is front view of a bi-furcated.

bracket for carrying the driving shafts. Fig.

5, is a longitudinal section (enlarged scale) partially broken, taken on the line AB of Fig. 3, Fig. 6, is an end View of one of the pushers. Fig. 7, is a plan view of the under surface of same Fig. 8, is a side view-of a flange supporting bracket for the inner ends -of the pushers.

The end plates 1 and 2, Figs. 1, 2, 3 and 5, which constitute part of the frame work of the machine, are mounted upon and secured to legs 3 and 4, and also to the boiler front by means of flanges, 5 and 6, and on the inner surface of each plate are formed lugs, 7 and 8,

the pushers 14. The said pushers are arranged in sections across the boiler front extending the full width of the furnace, at the height of the dead plate, as shown in Fig. 1, and are so adjusted beneath the hopper, 15, that the fuel falling in-front of them is thrust forward through a suitable opening in the boiler front on to the grate or fire bed at regular intervals, as they continue to slide in and out. In cross section these pushers, 14, are made angular; having a closed top, side and ends, as shown in Figs. 3 and 5, and have their outer extremities supported to move in parallel guides formed by lugs, 16 and 17, on the inner surface of the end plates 1 and 2.

The hopper, 15, has its front wall, 26, provided with ends flanges 27 and 28, for securing it to the end plates 1 and 2, and to the intermediate brackets 10 and 11, and is further provided with a longitudinal flange 29, to which is bolted brackets 30, 31 and 32, to carry the driven shaft 33, and spindles 34. The said brackets, 30, 31 and 32, are located in the rear of the pushers and have their upper flanges, 37 and 37, bolted to the flange 29, and their lower flanges 38 and 38, similarly secured to the flange, 39, of the bed plate. Each bracket is provided with an upper bearing, 40, for the shaft 33, and a lower elongated bearing, 41, to support the short spindles, 34, carrying gear wheels 42 and 42", which mesh with similar wheels 43 and 43, mounted upon the shaft 33. The aforesaid spindles, 34, are also provided at their outer ends with cranks 44 and 44, so spaced as to be in line with lugs 45 and 45, formed on the lower surface of the pushers, 14, to which they are pivoted through connecting rods or links 46 and 46. These lugs 45 and 45, are located near the ends; so that when motion is applied to the pushers they will move in and out parallel, as shown in Figs. 3, 5, and 7.

The driving mechanism consists of the driving shaft, 47, supported in bearings, 48 and 48, at one end of the machine, and carrying a pulley, 49, and worm, 50, which meshes with a toothed wheel, 51, loosely supported upon the shaft, 33. The said wheel, 51, is provided with a spiral groove, on its outer face, into which works a sliding bolt connected with a two part cross head located on the shaft, 33. When the sliding bolt is in contact with the stud in the spiral groove; the shaft 33, and spindles 34, move in unison through the gear wheels 42 and 43, and upon the withdrawal of the bolt; the toothed wheel 51, which is loose on the shaft, con tinues to revolve with the worm, while the shaft 33, remains motionless; at the same time the pushers cease to move, thus cutting off for the time being the supply of fuel to the furnaces, until the sliding bolt has traversed the spiral groove and isagain in contact with the stud these features are more fully set forth in a patent issued to us under date of June 19th 1906, No. 823,549, and therefore, need no fuller explanation.

Having thus described our invention what we desire to secure by Letters Patent, is set forth in the following claims, which are all substantially as described.

1. In a fuel feeding device for furnaces, the combination of a driving shaft having a direct intermittent rotary'movement, gear wheels mounted thereon, a series of second ary spindles located beneath the same, gear wheels with crank arms formed on the sides thereof; mounted upon the ends of said spindles tomesh with the teeth on the driving shaft, a-bracket having duplex bearings for the shaft and spindles, a hopper and bed plate, intermediate brackets provided with spaced lugs extending on both sides, thereof,

pushers having end projections and antifriction wheels arranged to work between the aforesaid spaced lugs, and a hopper furnished with flanged ends; secured to the end plates and to the intermediate brackets, substantially as set forth.

In testimony whereof we have signed our names to this specifications in the presence of two subscribing witnesses.

J AMES REAGAN. WILLIAM REAGAN.

Witnesses:

J. G. WHOLEY, EMERSON CONRAD. 4

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