US1542877A

US1542877A - Mobile furnace stoker

Info

Publication number: US1542877A
Application number: US620580A
Authority: US
Inventors: Harman Stevens Palmer
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-02-23
Filing date: 1923-02-23
Publication date: 1925-06-23
Anticipated expiration: 1942-06-23

Description

June 23, 1925.

s. P. HARMAN uoana FURNACE STOKER Fil ed Feb. 23. 1923 INVENTOR ATTORNEY Patented June 23, 1925.

STEVENS PALMER EAR-MAN, or'mAPL-Ewo'oD," JERSEY".

MOBILE FURNACE s'roxna.

Application filed February 23, 1923.; Serial No. 620,580.

To all whom it may concern:

Be it known that I, S'rnvENs MAN, citizen of the United States, and resident of Maplewood, in thecounty of Essex and State of New Jersey, have invented certain new and useful Improvements in Mobile Furnace Stokers, of whichthe following is a specification.

Thisinvention relates to improvements in stoking apparatus and more particularly to devices for feeding in connection with houses. Y

, One of the objects of the invention is to provide an apparatus that can be operated in a practical manner without the exercise of severe manual labor and effort required under ordinary circumstances, involving no shoveling or raising of the fuel in feeding the same. j

Another purpose is to produce a stoker, suited to be filled at the fuel supply bin with a quantity calculated to furnish the boilers for heating furnace for a considerable period oftirne, 1

and trundled into a convenient position relative to the furnace door.

A further aim is in the provision of means for tilting or oscillating the fuel holding hopper, whereby such portion of its contents as may be desired is delivered directly into the furnace withoutwaste or the distribution of dirt about the premises.

It is thus possible for one person to fill the stoker hopper, in the morning-or evening, move it into proximity with the furnace and a weaker personoperate it thereafter in supplying the fuel at such times as the furnace may require it. s

These several aims, objects and purposes together with others that willappear as the description progresses, are accomplished by the novel construction, combination and arrangement of parts hereinafter described and shown in the accompanying drawing forming a material part of this disclosure, and in which Figure l'is a side elevational view of a stoker made in accordance with the invention.

Figure 2 is a top plan view of the same. Figure 3 is a plan view showing a modified formof hopper. 1 i

The invention is composed of a rigid rectangular base frame, generally desig- PALMER HAR fuel to furnaces as used.

natedby the numeral '10, the same resting at one end on an-axle 11 supported by wheels 12 adjacent the frame sides. 'Rotatable in a vertical axis in the frame s1des,. near the front corners, are forked castoring means for moving the truck frame in straight or circular paths as required; a A bolt 15 passes through the frame approximately at the center-of its length, the bolt being provided with nuts 16 adapted to securely clamp a pair ofchannel uprights 17 said bolt passing through slots 18 in the lower ends of the uprights so that they may be adjusted for height. x i 3 i A pair, of struts or braces 19 are similarly slotted as ati20 at their lower-ends and are clamped in adjustment by the screws, or bolts 21.. v

The other ends of the struts are heldjto the uprights 17 by pivotal rivets 22, as obviously in raising or lowering the uprights, the angle between them and the struts will change.

Formed in the upper ends of the uprights are relatively shallow slots 23 suited to C0117 tain pintles 2 1 extending out from a bar 25 fixed transversely below a hopper 26.

Said hopper, as shown in Figuresl and 2,

is made ofheavy sheet metal, with parallel 29 having between them a rod or bar 30 pivotedbetween a pair of levers 31fconnected at their outturnedfends a handle Another rod 33 is fixed between the lower front ends of the levers, this rod being movable up or down alongside the uprights 17 and confined by loop guides 34 secured to the uprights.

One of thelevers 31 has pivoted to it by the screw 35, a bell-crank lever, one end 36 being engaged with a pull-string 37 and 1 the other angular end 38 is guided by a loop 39 to engage in any of the notches 10 formed in the channel.

A pull rod 41 is attached to the lever element 38, adjacent the lower edge of the lever 31, passing through an eye 42 and terminates in a pull ring 43.

In the modification shown in Figure 3 the hopper 45 is formed with a level bottom having its raised sides 46 narrowed at the front as at 47 and formed with a clownturned or hook-shaped end 48 similar to 28 before indicated.

The rear portion of the hopper is also narrowed as at 49 and secured on a bar sition is readily maintained and is further assured by engagement of the detent 38 in the lowermost notch in the upright.

When it is desired to enter a charge of coal into the furnace, the door is opened and the end 28 of the hopper advances through into the fire box, it being understood that the uprights have been adjusted to a suitable height Thereupon by pulling on the ring 43, the detent will be withdrawn and moderate force'in the liftingdirection being applied to the handle bar 32, the hopper will be oscillated upon the pivots 24, causing the contents of the hopper to be transferred by gravity into the fire box, which action may be assisted by the use of a poker or suitable pusher device if desired.

At this time the hopper will assume a position shown by the broken lines in Figure 1, the detent then engaging in the upper notch of the uprights-in a manner that will be readily understood.

The intermediate notch 40 might be used to maintain the hopper in a substantially horizontal position while not feeding coal to the furnace thus further reducing the amount of energy required to oscillate the hopper to feeding position.

From the foregoing it will be seen that a 1 convenient and practical apparatus for the purpose has been disclosed, but as changes of construction could be made within the scope of the invention, it is intended that all matter contained in foregoing description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

l. A portable stoker comprising a wheeled and castored truck, uprights on said truck, a hopper pivotally mounted on said up rights, said hopper having a curved bottom at its rear, and a narrowed portion at the front adapted to enter a furnace, a hooked end on said narrowed portion, and means for tilting said hopper,

2. A portable stoker comprising a wheeled truck, uprights adjustable inheight rigidly mounted thereon, a hop-per having a contracted area at its rear, a trunnion bar fixed to said hop-per at a point in advance of the center of gravity thereof, means on the front of said hopper adapted to engage with the opening of a fire box, means for tilting said hopper, and means for securing said hopper in its adjusted position.

3. A portable stoker comprising a m0vable truck, 'a hopper thereover, adjustable supports intervening said hopper and truck, means permitting said hopper to oscillate, a pair of levers pivotally engaged with the rear of said hopper, means on said supports for guiding and limiting the movement of said levers, and a detent adjacent one of said levers for maintaining said hopper in adjustment. I

4. A portable stokercomprising a -mov able truck, uprights adjustable on said truck, means for'clamping said uprights in adjustment, a hopper pivotally supported York and State of New York this 9th day of February A. D. 1923.

STEVENS PALMER HARMAN.