Complete Text (Part 2)

compressor. Check the details these advanced machines against others. Fully guaranteed. Drop-forged steel connecting rods, made extra long to lessen side thrust on pistons. Crank bearings are marine type, with shims for adjustment. steel bolts secured by lock nuts and pins. H-section rod gives maximum stiffness. Chrome-vyanadium best Oiling system features include removable strainer, pump, gauge, relief valve, and piping for oil at two pressures—adjustable spring relief valve passes oil to stuffing box and adjacent bearing. Gear pump operates in either direction and additional oil can be charged into machine while running Screen in base of crankcase is quickly cleaned. into of any Piate discharge valves, developed especial- ly for this service. Light moying parts: quiet, tight and reliable. Larger cylinders have multiple valves. Heat-treated ring plates give long useful life. Large suction scale ee: in bypass manifol: B: cleaning, being bet, a Force-feed oiling system gives positive automatic lubrication to bearings, cranks, wrist pins and stuffing box. Splash lubri- cation also maintained in crankcase. Faster running machines haye mechanical sight- feed and to cylinder walls. lubricator delivering oil to suction — i ~ - Ado a: OE Greater weight, st: gt! One-piece alignment Wé crankcase on all sizes He machines. Honed @P thick, make the only &@ j are not readily remo ;. * of monel metal, i ly removed for <tva@ » shut-off valves. @ and rigidity. va: cylinders and ™ the 4-Cylinder ,@° walls, extra qm surfaces which & ‘st indefinitely. Full-size bypass connections in one-piece manifold. Frick patented tight-closing con- trol valves arranged in simple square pat- tern, with safety relief valye above and suction screen below. Same size large pipe Openings for suction and discharge. Auto- matic bypass furnished when desired. Standard equipment supplied with Frick compressors includes two ammonia gauges mounted on a metal board, packing for the stuffing box, set of wrenches and tools, foundation bolts and wedges, hose for drawing in oil, enameled chart of operating instructions, piston ring guide, and erecting drawings. A template is furnished for set- ting the anchor bolts on machines without a sub-base. Complete service — design, manufacture, sales, erection, test and maintenance—by a world-wide organization of refrigerating en- gineers. Offices in over 175 cities. One re- sponsibility. Full line of ammonia, carbon dioxide and low pressure refrigerating ma- chines makes our recommendations un- biased. Both vertical enclosed and com- bined unit types of machines. Water jacket entirely covers cylinder heads, keeping them cool. Cover of jacket made removable to permit cleaning of mud or scale deposited by the water. Two water inlets: outlet at top. Suction valve is floated by spring and mo- tion is cushioned by dashpot. Valve cages are threaded, screwed into piston, and se- curely pinned. (No tap screws to work loose.) Multiple suction valves on 6 by 6 and larger machines. Adequate vyalve opening and quiet action on all sizes. A superior design for a superior machine. Chain-oiled outboard bearing beyond wheel supports weight of fly-wheel and pull of belt. Base frame, heavily ribbed, supplied on compressors of smaller sizes. Bearing pedestal is long enough to permit removal of wheel. Perfectly adapted to any type of drive: flat or V-belt, direct-connected synchronous motor, steam, oil, or gas engine, tandem coupled, or special drives. Machines built Double-length stuffing box with self-adjust- ing spring serving also as oil lantern. Holds pressure with gland nuts only finger tight. Sealed with oil under low pressure. Frick patented Flexo-Seal available when tr desired: standard on 3’’, 4” and 5” sizes. re a * . Oo meen 404 (614 with dual-pressure cylinders or capacity controls when desired. Die-cast bearings of best grade heavy-duty babbitt, surface hardened against wear. Split sleeves make renewal easy. Big-diam- eter shafts and generous bearing surfaces. Large Compressor with Capacity Con- trol, Operating in a Brewery at Reading, Penna. Cross-Section View of Adjust- able Capacity Control as Ap- plied to Enclosed Type Com- pressors. Note Ball Bearings near Adjusting Wheel Capacity Controls There is today a well defined demand for compressors with capa- city controls, arranged to permit close regulation of the load being carried by the machine without changing its speed or continually start- ing and stopping it. Control of capacity 1s particularly useful with machines having synchronous motor or oil engine drive, also where exact temperatures must be maintained; for two-stage compression it iS helpful in balancing the work of the different cylinders; it should also be considered for plants operating at partial loads over certain periods. The Frick capacity control 1s fundamentally an auxiliary cylinder, placed not at the end but between the limits of the stroke of the main cylinder, the piston over-traveling the port leading into the adjustable clearance pocket. This design has proved its advantages over anything else for the purpose. The clearance pocket is arranged so that when fully opened it gives a 50 per cent reduction in capacity. When the clearance valve is first opened, the capacity of the machine is reduced to 80 per cent; by adjusting the position of the piston by degrees, the machine can be made to deliver any fractional portion from 50 to 80 per cent (or the full amount) of its rated output. Years of experience with this problem have enabled us to produce a capacity control embodying the features of ready adjustment, quietness in operation, and the utmost efficiency. Over-heating is prevented by the water jacket surrounding the working part of the clearance pocket. Ball thrust bearings permit free turning of the hand wheel without ob- J Cc jectionable play in the piston stem, A small check valve in the face of the clearance piston allows the gas behind it to pass out when the pocket is being opened, The Patented Frick Flexo-Seal is Available for Am- monia Compressors when Desired: Needs no Al- tention When Starting or Stopping Machine ¥ 44 Model of 50-Ton Dual Pressure Ice Plant, Showing Water and Ammonia Precoolers in Penthouse Dual-Pressure Machimes For ice-making plants and other cooling systems in which the load can be divided between two temperature levels, important economies can be made by utilizing a machine adapted to handling the suction gas at both medium and low pressures. The gas resulting from the low-pressure load is drawn into the cylinder through the piston in the same way that it enters in any refrigerating machine of the standard vertical enclosed type. Near the end of the downward stroke the piston uncovers the auxiliary ports and the medium-pressure suction gas rushes in. The piston is moving slowly at this part of the stroke, and allows an ample period of time for the higher-pressure gas to fill the cylinder, compressing the gas already there, with the result that the entire load is carried in effect at the higher suction pressure. The capacity of the machine is considerably increased, while the horse- power expended per ton is reduced. By using the up-to-date float valve and electric controls throughout the system, a plant of this type can be operated with comparatively little attention on the part of the engineer. The inherent balancing of the pressures within the machine cylinders makes it unmecessary to maintain fine adjustments, as the respective loads vary. With such a system, the greater the difference in the two suction pres- sures, the greater the saving in power. As large a proportion of the load should be carried at the higher suction pressure level as possible. In ice- making plants, dual pressure operation recommends itself most strongly where the water to be frozen comes into the plant at a comparatively high temperature and the condensing water (which affects the temperature of the liquid ammonia) is warm. Dual pressure machines are built with pistons and cylinders of unusual length. Having a large number of these special machines in service, we are able to supply the trade with this equipment competently and promptly. Babbitted Piston for a 10 by 10 Dual-Pressure, Machine, Showing also the Babbitt-Inserted Rings. Pistons and Rings for Standard 9 by 9 and Larger Compressors are also Similarly Surfaced es sad | 28-Ton Dual-Pressure Plant of the English Ice Co. at Lawton, Ob#la. SIEDIWA: PRESSURE —— = SYC 7/ON omy LOW PRESSURE (| } SYCT/ION <— Suction Gas at the Higher Pressure Raises to its Own Level the Gas Already in the Cylinder The Assembly Floor of the Frick Shops, Showing Dual-Pressure Machines in the Foreground Dual-Pressure Machine Coupled to Diesel Engine, with Generator for Operating Auxiliaries: £ Compres Vertical Steam Engine Driving 10 by 10 Machine at the Mandalay Ice Co., in Burma Santa Rosa, Calif. 5 fj Drive. | 7 é #) ] Force $0} ms Note 5S-Point Lubricator Feed Oil Pump ——. Arranged with Wheel for Lubrication & Drives These Frick compressors are all equipped with a force-feed lubri- cating system, which keeps the main bearings, cranks and wrist pins under a constant film of oil at a pressure from 15 to 25 pounds above the suction pressure of the ammonia. The oil is drawn from the bot- tom of the crankcase through a screen, easily removed for cleaning. An adjustable spring relief valve allows the engineer to regulate the oil pressure carried; the excess oil passing through this relief valve is conducted to the stuffing box or Flexo-Seal and adjacent main bearing at a pressure corresponding to that of the suction pressure. The oil is constantly recirculated, and additional oil can be charged into the machine, regardless of the direction of rotation of the shaft, with- out shutting down the unit. Machines in sizes 8 in. by 8 in. and larger are furnished with mechanical sight-feed lubricators to supply oil under pressure, a drop at a time, to the suction inlet and to each cylinder wall. For Frick compressors of small and medium sizes, V-belt drive has been adopted as standard. Larger machines are furnished with shafts of extra length, to accommodate a direct-connected synchronous motor. Frick short-belt drives, regular flat belts, steam or oil engine drives are of course available when wanted. Special drives, water wheels, silent chains, ropes, etc., can be furnished to suit unusual cases. Unloading devices are also offered to suit requirements: these assist in starting machines driven by squirrel-cage or synchronous motors, by relieving the head pressure until the unit comes up to speed. Fw = -- T a Tae 7 +3 - . Ate 4} 4 The Lubricating System on Large Frick Enclosed Compressors is Excep- tionally Complete, Effec- tive, and Thoroughly Reliable i LFS ° — (%&) EXCESS OlL. OVERFLOWS ' TO BEARING a ee ee ee ee ee eee ee eee ete ee oe oe om ie Frick Enclosed Ammonia Compressors as Furnished in 5” by 5”, 6” by 6” and 7” by 7” Sizes (Drawings below give Space Requirements for these Machines) ¥ FLOOR LINE t = ———— - ae t ' = [ 4s — fe WIDTH OF FOUNDATION = 276 | i ~ — 55 f 4 YA $$. -_ a 5S” by 5” Machine with 6” by 6” Machine with " by 7” Machine with V-Belt Wheel V-Belt Wheel V-Belt Wheel Of tN and 9’ by 9”’ Machines have the Design shown in this Installation << 4 c by ' Machines ) LhDese ) kK CGuU17V €N1ENTLS Sy hy Machine with Synch. — =_ —4 — — (= 3== | ©} OD / VW | r y a) oe \ | r \ — te t—n poe ? r 2) | = = + 1. 1)&#125;4) f i » MO . iil C= i | iE | s y 35 FLOOR LINE WIDTH OF FOUNDATION 4-10 r 10-73 4 10” by 10” Machine with V-Belt Wheel I . Ls FLOOR LINE WIDTH OF FOUNDATION 5-8" /0'-73 - = 10” by 10” Machine with Synch. ; Motor < 8 - = ee — 4-35 — = a 12” by 12” Two-Cylinde) Machine with V-Belt W heel Ad Illustrating Standard 10” by 10” and 12” by 12” Frick Compressors Each with Two Cylinders, Out- beyond Mo- board Bearing 1s > - ; tor. Space Requirements are Riven below S sn ~ | ~ ———— 6 YL | } N um i] . ——— oo _ | 4 —s i et £3) toad Ht I 4 7 J | — SS LJ U ) 1 SSS i lar < ———. —— ¢ — FL 2 rs L/ ) ae | -- - = | ~ tr U AT Y O | 7 | 8 = 12” by 12” Two-Cylinder Machine with Synch. Motor linder Ammonia Compressor, with See details in Bulletin 651 1 ( [BLANK PAGE] i ' del ; Z dink | Eee f Fah he beth; LPs ae | ge ei 5) 9 “outa! byt ER et ¥ 1 ae oe 7 vy, Pd i, Ae nM - aie ey y soar dt mn) Se" pie ae ye 8s ys é Af ie ‘s 4 ; 2 t é. ‘ 4 J we . ; ' i> “> pa, ee ee af aes of * arte te z ie PT "a ie ae Frick Branch Offices Albaivy, New’ York 22222-25225 -- 5 Ss eee 122 Manning Boulevard Adanta, Geotgia: ==) 2c ee ee eee 1003 Mortgage Guarantee Building Baltimore, ‘Maryland 2.2.22... 230-2 a ee ee 2133 Maryland Avenue Boston; Massachusetts 20... * 4 a ee eee eee 716 Columbus Avenue Chatlotte, North’Carolina .. 2...) 6. Se ee ee ee eee 1013 Independence Building Cincinnati, Obio! _. 22 a a 3705 Carew Tower Wallas* Texas. 2 Eee er 1314 Santa Fe Building Katisas City, Missouri <-2>-+ i _ ee eee 426 Dwight Building Eps,Anceles, Califernia 0.22722 eee se 541 East Eighth Street Memphis, Tennessee 22-0 7 205 56 a ee 712 Sterick Building Neo -Orléans, Tuoutsiang.2 22. a ee eee 910 Queen & Crescent Building New York,. New: Vetoes 2 eee 370 Lexington Avenue Okishoma ‘City, Oklahoma =. a eee 127 N. W. 13th Street Palatka: Florida soo" =e) 1719 President Street Philadelphia.” Peansylvapia. -.....__=-=223_- _... 2.2225 _ Se ee 718 Witherspoon Building Pittsburgh: Pennsylvania .....-- 0 se ee 606 Empire Building Saint Louis, Missourt 222 02c eee 100 North Broadway Seattle, Washington 312 Columbia Street Frick Direct Selling Agents PatialenNem, Oper 6 =o ee Mollenberg-Betz Machine Company, 20-26 Henry Street Ciiitaro, sien on oe Midwest Engineering & Equipment Co., 617 Fulton Street Detioie, Mn. 52 oe ee Detroit Ice Machine Company, 2615 Twelfth Street —— «€ Frick Factors & Dealers Altoona Denver Memphis Saint Louis Ae Des Moines Miami ee Saint Paul Amarillo Erie Minneapolt San Antonio pre tr Okla. Evansville Mobile San Francisco Asheville Fond du Lac Nashville Savannah Avanta Harrisburg New Orleans Schenectady Atlantic City Harrisonburg New York City Seattle Baltimore Hartford North Agawam, Mass. Sheboygan emehen Hattiesburg Oklahoma City Spokane Joston Houston Omaha ampa Bristol Indianapolis Parkersburg Toledo Brooklyn — Jackson Philadelphia Tucson Cedar Rapids Jacksonville Phoenix Tulsa Champaign Jersey City Pittsburgh Uuca Charlotte Kalamazoo Portland Walkersville, Md. Chattanooga Knoxville Reading Washington Chevy Chase Lexington, Ky. Richmond Wichita Cincinnati Liule Rock Rockford Wilkes-Barre Cleveland Los Angeles Rogers City, Mich. Williamsport Columbus Louisville Sacramento Winchester, Va. Dallas Lubbock Saint Joseph Overseas Distributors in Principal Countries Throughout the World Printed in U. S. A. a