US990550A - Automatic stoker. - Google Patents

Description

W. T. HANNA.

AUTOMATIC STOKER.

APPLICATION I 'ILBD JULY 6,1909.

Patented Apr. 25, 1911;

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AUTOMATIC STOKER.

APPLICATION FILED JULY 6,1909,

Patented Apr. 25, 1911.

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AUTOMATIC STOKER.

APPLICATION FILED JULY 6,1909

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W. T. HANNA.

AUTOMATIC STOKER. AfPLIOATION FILED JULY 6,1909.

Patented Apr. 25, 1911.

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WILLIAM '1, HANNA, OF CINCINNATI, OH IO, ASSIGNOR 0F TWO-THIRDS TO THA A. HANNA AND ONE-THIRD T0 CLYDE P. JOHNSON, BOTH OF CINCINNATI, OHIO.

AUTOMATIC STOKER.

Specification of Letters Patent.

Application filed July 6, 1909.

Patented Apr. 25, 1911.

Serial No. 505,958.

To all whom 'it may concern:

- Be it known that 1, WILLIAM T. HANNA,

a citizen of the United States, residing atv automatic stoking mechanism so constructed as to permit of practically instantaneousremoval of all parts of the stoking mechanism which would interfere with hand stoking,

and the invention consists in the parts and combination and arrangement of parts hereinafter described and claimed.

1 have illustrated the invention in connection with fuel feeding mechanism substantially like that disclosed in my application for Letters Patent, filed May 16, 1907, Serial No. 373,908.

In the drawings, Figure l is a vertical central longitudinal section showing stoking mechanism'embodying my invention as applied to the fire box of a locomotive; Fig. 2 a side elevation showing the hopper and feed screw disconnected; Fig. 3 a side elevation of the stoking mechanism showing the fire door open and the hopper and feed screw broken away; Fig. 4 a side elevation of one of the conduit sections; Fig.5 a front elevation showing the partswhich remain when the stoking apparatus is cleared away for hand stoking; Fig. 6 a detail showing part of the connections by which the direction of feed is controlled; Fig. 7 a front View of the upper conduit section showing it connected to the fuel door; Fig. 8 a diagrammatic view showing the connections between the engine I and the shaft which drives the fuel conveyer; and Figs. 9 and 10 details.

The reference numeral 1 designates the front of the fire boxof a locomotive engine, 2 a base frame for the stoking mechanism in which is mounted an engine 3 arranged to drive a shaft 4. carrying a gear 5, 6 a frame detachably mounted on frame 2 carrying a hopper 7 and, beneath the hopper, a screw conveyer 8 adapted to be driven by a gear 9, fixed to the conveyer shaft 10 and meshing with gear 5, and adapted to rotate in a casing formed in part by an oval chamber 11 in the base frame 2 and in part by a semicylindrical wali 12 constituting part of the wall of the hopper, 13 an approximately cylindrical conduit section, preferably integral with the hopper, adapted to receive fuel from the delivery end of the conveyer screw and deliver it to an elbow shaped conduit section 14 removably seated thereon and adapted to deliver the fuel to a feed chute 15 carried by a fuel door 16, 17 keys adapted to take into sockets 18 in the door and lock the conduit section 14 in alined engagement with the feed chute, 19 a plate or lid hinged to the upper part of the door and adapted to close the feed chute when the stoking apparatus is disconnected, 20 a hinged plate forming part of the upper wall of conduit section 14: and, when open permitting inspection of the interior of the fire box, 21 a threaded pin pivotally connected with the body of the conduit section 14, and adapted to take into a U-shaped lug 22 on the view plate 20, and 23 a thumb nut adapted to lock the pin in engagement with lug 22 thereby holding the view.plate in its closed position.

The base frame 2 is provided with abutments 25, adapted to center the hopper, and with pivoted clamps, or hooks, 26 adapted to take over pins or lugs 27 upon the base of the hopper and lock the hopper in position. The rear side of the hooks are preferably cut away at 28 to receive-detents 29 pivoted to the base frame and adapted to lock the hooks against accidental displacement.

In the preferred form the stoking apparatus includes power operated mechanism, carried bythe fuel door, for directing the flow of the fuel as it leaves the feed chute. For this purpose I provide a feed plate 30, fixed tothe fuel door, preferably inclining downwardly from its receiving to its discharge end, and having its side faces sloping downwardly from its longitudinal central line. Guide plates or wings 31, extending longitudinally of the feed plate are fixed at their rear ends to rods 82, having a jointed con nection with rock shafts 33, whereby a continuous upward and downward swing, upon the faces of the feed plate may be imparted to either or both guide wings.

The rock 25 55 having its hearings in links 50.

shafts are actuated by arms 34, pivoted at 35 and provided with pins '36 taking into slots or channels 37 in blocks 39 fixed to 3 arms 38 and 38 which are adapted to be re- 5 'ciprocated by suitable connections .(not

shown) the slots being arranged transversely of the arms.

A preferred method of connecting the en? gine' with the driving shaft'4 is shown in Fig. 8 in which 41 designates a sector arm pivotally secured to the cross head 40' of the engine. This arm is fixed to a shaft 42 and carries at its free end a segmental 'rack 43 fixed to a shaft 46. A sleeve 47,

fixed on shaft 46, carries a crank 48 which is connected by a pivot shaft 49 with links 50 which are pivotally connected at their other ends with a crank 51 carried by a sleeve 52 loosely mounted on' shaft 42., These links and their connections will be mounted thereon and shaft 42 a second sleeve 52, fixed thereto. These sleeves are connected by crank 48", links 50 and crank 51*. These links and their connections will be designated as frame B. An adjustable spring arm 53' is mounted on pivot shaft 49 and carries a sector arm 54 connected with a pallet 57*, adapted to engage with a toothed wheel 56 fixed'to shaft 4, theseparts being duplicates in form and arrangement of the 40 corresponding parts described in connection with frame A. Movement of the cross head to the right causes arm 41 to'rock shaft 42 from left to right, and through racks 43 and 45 to rock sha 46 from right to left. This movement of shaft 42, through fixed sleeve 52 and crank 51*, causes frame 13' to move from left'to right and pallet 57 engaging with a tooth in wheel 55 im arts rotation to the wheel and consequent y to shaft 4,

the rotation being from left-to right. At

the same time the rocking motion of shaft 46,through fixed sleeve 47 and crank 48 causes frame A to move from right to left, pallet 57 riding idly. Reversal of movement of the cross head causes the frames to move in reverse directions and pallet 57 then engages with toothed wheel 55 and imparts rotation to it and shaft 4, the direction of rotation being still from left to right. By

changing the positions of the sector arms 54, 54 t pallets may be so positioned that then other' ends will engage with the toothed wheels and the direction of rotation ofpshaft 4 thereby reversed, or the pallets may be positioned that both will be idle.

To clear the locomotive for hand stoking the arms 34, which actuate the rock shafts, are-lifted out of engagement with the reciprocating arms 38, the keys 17 turned to disengaging position, the conduit section 14 removed, the detents 29 disengaged from the hooks 26, the hooks disengaged from pins 27 and the frame carryingthe feed screw and hopper removed, all of which may be done in a fraction of a minute.

By turning down the lid 19 the feed chute in the door may be closed so that the door may completely close the fuel opening.

If when the stoking apparatus is in use it should at any time become desirable torake the fuel, the arms 34 may be lifted out of engagement, the keys 17 disengaged, conduit section 14 removed and the door opened. i

I claim, in an automatic stoker: 1. The combination with a fire box of a base frame: an engine mounted thereon: a-

frame deta chably secured to the base frame: a feed screw mounted in the detachable frame and adapted to be driven by connections with the engine, a suitable casing for the feed screw being provided, partly in the base frame and partly in the detachable frame; a hopper carried by the detachable frame: and a separable conduit leading from the feed screw casing and adapted to deliver fuel to the fire box.

2.The combination with a fire box of a base frame: an engine mounted thereon: a frame detachably secured to the base frame: a feed screw mounted in the detachable frame and adapted to be driven by connections with the engine, asuitable casing for the feed screw being provided, partly in the base frame and partly in the detachable frame: a hopper carried by the detachable frame: a fuel door: a feed chute therein: a conduit section fixed to the detachable frame and adapted to receive fuel from the conveyer: and a removable conduit section seated thereon, adapted to receive fuel therefrom and deliver it to the feed chute, and detachably connected with the door.

3. The combination with a fire box ofa base frame: an engine mounted thereon: a frame detachably secured to the base frame: a feed screw mounted in the detachable frame and adapted to be driven by 'connections with the engine, a suitable casing for the feed screw being provided, partly in the I frame detachably secured to the base frame: separable conduit leading from the feed the feed screw being provided, partly in the a feed screw mounted in the detachable screw casing to the feed chute: and means 10 frame and adapted to be driven by connecfor closing the feed chute. tions with the engine, a suitable casing for WILLIAM T. HANNA.

base frame and partly in the detachable Witnesses: frame: a hopper carried by the detachable k CARL PHARES, frame: a fuel door: a feed chute thereinra S. E. RISURENT.

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