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forming the 8-in. space filled with sawdust. The 3-in. air-space is obtained by nailing 3 in. X 4 in.pieces to the outside sheathing of the 8-in. studding, and then closing in the entire building withhevelled weather-boarding. The roof is ceiled underneath the rafters with i-in. rough boards andcovered with tarred roofing-felt on i-in. boards. There is a 4-ft. X 10-ft. louvred ventilator in theroof over each compartment.
There are three sliding-doors in the side of the building and one door in the roof at each shaftor hoist. The sliding-doors are arranged so as to fit the openings tightly by means of suitable at-tachments and locking devices. The doors in the roof open inwardly. The sides of the shaft insidethe building are made of loose boards working in slots, so that the top of the shaft can be kept atany desired height, or the shaft removed with the exception of the upright corner-pieces.
The foundations of the house are stone walls, with proper openings to allow for drainage. Thefloor in each compartment is dished from the corners to the centre, and is made of a layer of about2 ft. of ashes on top of broken stone. Blind drains were built underneath the broken stone to givebetter drainage.
The principal timbers used are as follows: sills, 6 in. X 8 in.; principal studs, 8 in. X 8 in.;intermediate studs, 3 in. X 8 in., spaced 24 in.; outside studding to form air-space, 3 in. X 4 in.;plates, 6 in. X 8 in.; rafters, 3 in. X 6 in., spaced 24 in.
The cage of the hoist is provided with an arrangement for discharging the ice-blocks automati-cally into the house at any desired height. The cage consists of a frame supporting a platformpivoted at its centre. The side of the platform next to the house is held up by a cam underneath it,which cam is attached to the frame. This cam is connected by a chain or rope to a ring at the footof the hoist, which allows the length of the rope to be readily adjusted. When the cage has beenhoisted to the desired height, the rope becomes taut and draw's the cam from beneath the platform,allowing the side of the platform next to the building to drop and shooting the block of ice into thehouse, where men are ready to receive it. While filling the house this hoist is operated by a'smallportable steam-engine or by horse-pow'er. For drawing the daily supply from the house, a smallerplatform worked by a hand windlass is used.
This building has given very good satisfaction. Its cost can be placed at about $3000 to$ 3 S°°-
Fifteen-hundred-ton Ice-house at Nickerson , Kan., Atchison , Topeka Santa Fe Railroad. —Theice-house of the Atchison, Topeka & Santa Fe Railroad at Nickerson, Kan., shown in Figs. 169 to 171,
Fig. 169.- Elevation of Frame.
Fig. 170.—Front Elevation.
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1 1 1 1 1 1 1—1—1—
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: t 1 ■ 1 " t i—nr t-
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Fig. 171.—Ground-plan.
with a nominal capacity of T500 tons, but able to hold 1800 tons, is a frame structure divided intofive compartments. The outside dimensions of the house are 120 ft. X 40 ft., and the height of the