Зображення сторінки

free from defects of any kind, - in width by — in length, and capable of transmitting — horse-power at a belt speed of—.

zooloowa Such renewal parts as it is advisable to keep on hand, adding hereto an itemized list of same.

208 Summary. (See Note: p. 52, sec. 27.) Each bidder shall fill out completely the following summary: Number of engines . . . . . —— Size of cylinder(s) . . . . . — Diameter of steam pipe . . . — Diameter of exhaust pipe . . —— Floor space . . . . . . . — Indicated horse-power at-revolutions, – initial steam pressure, — back pressure, cutting off at — stroke . . . — Speed . . . . . . . . . — Maximum variation in speed between no load and full load Number of pulleys . . . . . —

[merged small][merged small][merged small][ocr errors][merged small][ocr errors]

centre line of shaft —.
Shafting to be key-seated for the pul-
leys specified below, and provided with

all necessary collars, guard rings, etc.
plain cast iron,
split “ “
—- plain wood, pulleys accur-
split “
grooved, etc.
ately bored, turned, balanced, and pro-

vided with key seats and keys. Pulleys

to be — in diameter by — face, and ca

pable of transmitting — horse-power

at — revolutions.
—, - arm, balanced friction-clutch

pulleys, - in diameter by — face,

209. CounterShafting.

210. Pulleys,

and capable of transmitting — horse-
power at — revolutions. Each pulley
to be provided with a — shifter rig, to
operate from —. The clutch must
pick up the load without shock or jar,
and the shifter rig must be positive in its
action, not liable to get out of order,
free from any tendency or liability to be
thrown in or out accidentally.
(— friction-clutch couplings, cut-off
couplings, compression couplings, plate
couplings, jaw clutches, etc., also idlers
and method of applying.)

*:::::" (Note—Specify characteroffoundation

upon which shafting is to be placed, whether special foundations of brick or stone, floor timbers, walls, ceilings, posts, etc.)

**oller (*). , –, - boiler(s) (each) rated at

— horse-power.
The boiler(s) shall contain not less than

– of heating surface per rated horse

power. The shell(s) shall be made of steel having a tensile strength of not less than—, and shall be braced and stayed for a working pressure of — pounds, and tested to — pounds hydrostatic preSSure.

| They | shall be inspected and insured

by a responsible steam boiler insurance company, this contractor to furnish a certificate of inspection and a policy of inSurance for —. .

| * | boiler shall be provided with

dome or drums | dry pipe brackets, plates, bolts, stays, anchor and binder rods, man and hand holes, steam and blow-off connections, stop and safety valves, pressure gauge, Water column, gauge cocks and drip, set of stoking tools consisting of —, and all other appliances properly coming under this head.

| the necessary lugs,

The boiler(s) shall be set in masonry in a first-class manner, according to standard

213. Fittings 215. Stack.

214. Setting.

216. Smoke Connections.

217. Piping.

practice. This contractor to do all neces-
sary excavating or filling for the founda-
tion(s) and to remove all debris.
(Specify character of soil upon which
boilers will be placed.)

(Note.—Specify material, diameter, height, lining, base, location, etc.)

Smoke connections of —, having an area —, are to be made with the stack, and are to be provided with — dampers and — cleaning doors arranged as follows : —

(Note.—If the piping is to be erected with reference to existing piping or to meet special conditions the specification must be made up with due regard to such conditions; for entirely new piping, independent of auxiliary connections, the following specification will cover many cases.)

This contractor shall furnish and erect

« НазадПродовжити »