« НазадПродовжити »
ing service, rated at — brake h.p. at — re, olutions per minute, with — lbs. initial
steam pressure (above the atmosphere), — lbs. back pressure, and cutting off at -—
stroke. When operating at its full rated load under normal and regular working conditions }o engine shall be guaranteed not to exceed a steam consumption of —lbs. of d ry steam per brake h.p. and per hour. The speed variation between no load and full load shall be guaranteed not to exceed — per cent.
#;"| engine shall be provided with
—— pulleys - - - -- h ba. #oneal — in diameter by — face.
All material and workmanship shall be of the highest grade; all parts accurately made to standard gauge and interchangeable; all moving parts carefully balanced; all valves and packing free from leakage.
| They | shall operate noiselessly and without pounding or vibration when set on suitable foundation.
| Each | engine shall be provided with all 105. Fittings.
The necessary foundation bolts and plates, lubricators, oil cups, cans, drips, guards, collectors, steam and exhaust valves, safety cocks, etc., and a full set of wrenches and spanners.
Also with the necessary pipes, valves, and
—, and shall be of sufficient length, width
#!" weight and all strains to which
vating or filling and the removal of all débris
shall be done by the | o: | the height
of the floor line above the ground is —. The
will swing jo" the floor ——.
(Character of the soil should also be specified.)
* . . . . e.,
(Note.—If this contractor furnishes plant complete, this section can be put before final summary.) engine(s) are When the } plant | | is s ready for operation # ey | shall be run for a period of -- days by competent engineers furnished
by the contractor. All oil, waste, etc., and a
- dry steam sufficient supply of | a suitable fu a! will
be furnished by (the purchaser).
instructions to the engineer of (the purchaser)
for the proper care, maintenance, and opera
tion of the jo such instructions
to be given during the trial period stipulated above.
s double leather, endless, solid
<< 4. 44 perforated — & link belts, rubber cotton-leather rope, etc., free from defects of any kind, –— in width
by — in length, and capable of transmitting — horse-power at a belt speed of
Such renewal parts as it is advisable to keep on hand, adding hereto an itemized list of Sal Ile,
201. Renewal Parts.
* Summary. (See Note.—p. 47, sec. 27.)
Diameter of exhaust pipe
) Floor space e - - -
Number of pulleys -
; :- __ ] drop hangers,
able, (self-oiling) boxes, base plates, bolts,
line of shaft ——. dif
for the pulleys specified below, and (provided)
complete with adjust
s plain cast iron, split “ . “ — plain wood, pulleys accurately split “ grooved, etc. bored, turned, balanced, and provided with Set ScrewS. } key seats and keys. diameter by — face, and capable of transmitting — horse-power at —— revolutions. ——, — arm, balanced friction-clutch pulleys, – in diameter by — face, and capable of Uransmitting — horse-power at —
| Pulleys to be — in
revolutions. Each pulley to be provided with
a — shifter rig, to be operated 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.)
(Note.—Specify character of foundation upon which shafting is to be placed, whether special foundations of brick or stone, floor timbers, wails, ceilings, posts, etc.) ——, –—, — front boiler(s) (each) rated at —— horse-power. The boiler(s) shall contain not less than —— of effective heating surface and —— of grate area per rated horse-power. The