US 815911 A
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110.815,?)11. H PATENTED R. 20; 1 906. A. H. EDDY.
APPLICATION nun mm. 1904.
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3 11/ m'mesm-z Am. 0 1 0 2 R A M D. E T N E A D R mm P. EA -m M APPLICATION FILED HAY'L 1904.
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a A. H. EDDY.
I AMMONIA PUMP.
APPLIOLjIO]: FILED ELY 4 2. 1904.
rzyi- I PATENTED'MAR. 20, 1906.
4 SHEETS-SHEET 4.
nm'i fleazs'es I Inventor."
at. 815,911 .1 g
' isfa bracket'S, with a bearin which sup lorts.
a shaft havinf'a pulley-9jon l1 a-s'mall'beve o of;t; sham-case.- -T 1 :bearin' ,is ground and. jinolrshed, so as tocIOseIyfit't egro ind and p'ohshed arbor'll. the 'lower'end (St-the 4 Te all whom it con cervix i 1 stir, in the connty'of Hartford an ...us ef u-l Improvements in Ammonia Pumps of p shows a central vertical sectionof this pump.;
I plan'of the away, as in gear-12', that is in mesh with the bevelear.
the 1 3 I 0n, the, bottomziofvthe "eam-caseJis-r-a'; grooved ring :14, and on the bottom .of the icam-eylinder'isagrooved rin 15f. Between these-ringsareantifriction-ba s,-
Set-screws 1 6 are screwed through the bottom-of .the' earn-case against the under side "of the lower singe t .155 ad usting the cam eylinder verticall inthe cam cas'e. -3These j'a'i'e'provi ed-witli' FFIOE. I
mm H. EDDY, OF winosos, ooNNEo'tnoUT. i
Be it known ith'atI, ARTHUR H.
citizenof the United States, residing atWind:
a, I State of Connecticut," 'havejinv'ented certain new and mo'nia for-refri%erat1ng'purposesi j the 1nvent1on -1s t'o roduee a Loan be nes but-little attention. he pump-illustrated has a case containing acam whichis adapted to'be rotated from:-
and whiehis'p'rovided with a valve-plate'and Figure lief the accompanying drawings.
-2. shows a horizontal'section on theplane 1n ieatedby '2r;2fon"Fig.- 11-; Fig. '3 shows-a piston-case with a portion brokenics'a.tediby 3 3 on F g. 1. Fi 4 is.- a vertical sectionon the planemdicate by 4. 4=of- 3, taken "thiou h the:head-plate,- ate, and up er'en ofthe piston-case.
. w Fig. 5, 1s a'plan'oft e under sidof the head; plate. Fig. '6 is aview of one'o'f thepistons.
The carnecase 7 is preferably cast to shape; ofnon, and-is su ported on'an 'desired forma. of legs. Secure gto, ones'ide o the cam-case t eouter en and gear-101011 the ;inner'end.I-'"- lon -;vertical bearin "is'formed at the'bottoin arbor outside-of the cam-case is a largebevleh" on: the; pulley-shaft?- theupper en -of arbor in'the oain -ca'se is the cam-cyhnder purpose of changing itsZlevel and" fipeeification rig-1mm Patent. Application tiled 1.,51904. ss -i=1 No. 200.288.
i nuts l7;'which areused to lock the screwsin EnDY,-- a
position and prevent leakage.
Around the interior-of the cam-cylinderare -the cam-ribs 18. Between theseribs'arethe T0118 19, which are mounted on studs project- "Patented March so, 190s. i
from the shanks of the" istons'20.[,. A's
. thecam-eylinder rotates the ower'rib forces the pistons upwardly and the-upper rib draws. Y T the pistons downwardly. T preferably so. shaped that the pistons are orced-up'ra'pidly and drawn down slowly;
ing between'the ri s. The upper section of shank section is" approxlmately semicylin ese ribs are-- *A short section of the-upper rib is cut away; so-that therolls ma be inserted into the opendricaL; the" outer face of eachshank being 1 shaped" to conform to the inner walls of; the" cam-ribs. v I p Thepiston-c'ase 21, which contains the cyl- J, "indersjmwhichlthe istons move, is preferf ably cast to shape ,-o iron,.andhas tslower. j face ground so as toclosely fit the groundupperface. of-th'e 'can case to which 'itis bolted. jA- hollow hub'22'eiztends downwardly from a the eentersofthe piston-case .into the 411} thecam-ribs; Thefcylinder' bores are-c0nlinder, "the diameter of this-hub being-but ghtly smallertha'n the interior diameter'of. 5. p
tinned in this-hu an j t 11 dricalq-shanksof thes n Which-re ag fitrotation by t e-eng g f athreaded nut 25, the interior wall ofwhic .is preferablyj -tapered; The valve.- disk 26 has. its-lower faeeground and olis'lie'd, so as -w1de outer surfaces with the inner'surfaces-of r the cam-ribs; Each" iston is tubular, and in go the upperen'd of the ore of each piston is a r hardenedannul'ar plate 23, that has aground and polished'v alve-seat 24 on its upper slde.
to makeclose-contactwith t e'valveseat,
and has its edgefbeveled'; so that it wil l be guided-to its seat bythebeveled interior-wall of. the nut. stem 27 extends downwardly from the valvedisk into thepiston and 1s p1o-'. i vided witha 'in-which' revents the (1181008)- tion of the va ve'. I Eac Piston is preierably- ,provided with two grooves contaimngISP packingq'in s 28', that are ground so aspt q i make-tight oints withthe' wall of the cylm fd r Bs e n h oo -i nt nin 't kin n s. my be. a m .9 will provide anbil-paoking orthe plsf ;I. -II4 Th alveplatin} Q isplaced upon "top 1 flaohpisto'n'is oylindrical and'the lower-or upper of the piston-case, and the head-plate 31 is placed on top of the valve-plate. The under surface of the valve-plate is ground to fit the ground upper end of the piston-case, and the upper face of the valve-plate. and lower face of the head-plate are ground so that they tightly together. Screws are passed through the head-plate and valve-plate into nd oi the piston-case about each 2 icr holding the parts together. 1
Above each cylinder in the valve-plate is opening containing a threaded nut 32, having valve-seat that is very hard on its This valve-seat is ground and polished so to be very smooth. Above the valveseat in each opening is a valvedisk 33, has its under face ground and polished so as to closely fit the valve-seat. A tapered stem 3% is fastened to this disk, so as to extend. into the tapered opening through the -nut for the purpose of guiding the valve to its seat.
In the under face of the head-plate above the valves m an annular groove 35, which on one mile communicates with an opening 36 through the valve-plate and an outlet 37 in the upper end of the piston-case, which is adapted to be connected with the pipe which leads to the gas-receiver. v Ammonia is received into the cam-case through the open 38 on one side and is pumped by the pistons past the valves to the outlet as the cam is rotated.
The cam-case is referably filled with oil nearlyto thelevel o the ammonia-inlet. This oil prevents any possibilitlyrof the leakage of gas about the cam-arbor t ough the opening in the bottom of the can1case, which -0 ening is the on] one from the interior to t e extenor of t c pump which contains a moving part. On account of the closeness of the joint and length of the bearing, also the use of oil, which'not only lubricates the arbor, but packs thejoint, there is no possible chance for gas to leak.
The web of the bevel-gear below the camcase is preferably made dish-shaped, so as to hold any oil that might possibly leak from the interior about the cam-arbor.
The pistonecase around the cylinders is chambered, andwater or other cooling medrum is caused to enter the space about the cylinders through the opening 39 at the bottom on one side of the piston-case and after circulating about the cylinders to flow out through the opening 40 at the top on the other side. I
The parts of this pump are strong and durable. They are simple to make and are easily assembled. There is but one opening containing a moving part, and that is so arranged that it does not require a packing to prevent leakage, although a packing can be used, if desired. The valves are very simple and require no springs to assist their operaciency;
tion. The pistons are effective and are so adjusted by raising or lowering the rotary cam that they move upwardly close to the under face of the valvenplatc. In practice the pistons are preferably adjusted so that there will be noclcarancc between. their upper ends and the under side of the valvcplate when they are at the limit of their upward movement, thus insuring great elli- The pistons and the cams work easily and have such broad bearing-faces that the wear amounts to nothing. The cam cylinder can be adjusted while the pump is running, and after being properly adjusted the pump will run for a long time without further attention.
The invention claimed is 1. A pump having a tight case containing concentrically-arranged cylinders, each cylinder having an inlet-opening at one end and an outlet-opening at the other end, a rotatable cam located near one end of and iucloscd in the case, the aXis of the cam extending parallel with the axes of the cylinders, means or rotating the cam, pistons with fluid-passages through them located in the cylinders and adapted to be positively reciprccated by the rotation of the cam, valves controlling the passages through the pistons carried by ings at one end of the cylinders held by the case, substantially as specified.
2. A pump having a case, a rotatable cam in the case, means for rotating the cam, pistons located in cylinders in the case and adapted to be positively reciprocated by the rotation of the cam, inlet-valves carried by the pistons, discharge-valves held by the case, and a cooling-chamber surrounding the cylinders in the case, substantially as specified.
3. A pump having a case, a rotatable cam in the case, means for rotating the cam, a ball-ring at the bottom of the case, balls located between the ring and the cam, pistons located in cylinders in the case and adapted to be positively reciprocated by the rotation of the cam, inlet-valves carried by the pistons, and discharge-valves held by the case, substantially as specified.
4. A pump having a case, a rotatable cam in the case, means for rotating the cam, a ballring at the bottom of the case, means for adjusting the ball-ring axially of the cam,
balls located between the ring and the. cam,
pistons located in cylinders in the case. and adapted to be positively reciprocated by the rotation of the cam, inlet-valves carried by the pistons, and discharge-valves held by the case, substantially as specified. I
5. A pump having a case, a rotatable cam in the case, means for rotating the cam, pistons located in cylinders in the case and having shanks that are adapted to be reciprocated by but held against rotation by the cam, inlet-valves carried by the pistons, and
- discharge-valves held by. the'case', subs t'an-J tially as specified.
6. A pump having a case, a rotatable cam in the case, means for rotating the cam, pistons located in cylinders in the case and 1 adapted to be reciprocatedby the rotation of cam in the cam-case, means for rotating; the
from the cam through the bottom of the camthe cam, afiat inlet-valve seat in each piston, a flat disk carried by each piston and adapted to open from and'close again'stthe inlet-4 valve seat, andfopposite each piston a flat.
dischar e-valve seat and .a flat valve -.disk adapted flat discharge-valve seat, substantially as Specified.
7 .A pump having acam case, a rotatable cam, ajpiston-case s'ecured to the cam-case, pistons located in cylinders inthe istoncase' and ada ted to be reciprocated y the rotation oft e cam, inlet-valves earriedby the pistons, a valve-plate secured to the piston-case, dischargewalves located in open-, ings in the valve-plate and a head-plate se-' cured to the valve-plate, substantially as specified 8. pump havinga cam-case, a rotatable cam in the cam-case,- an arbor extending case, a gear on the arbor below the cam-case, a pulley and gear for thecam-gear, a
iston-case secured to the cam-case, pistons ocatedin cylinders in the piston-case and adapted to be reciprocated the rotationof b the .cam,'inlet-valves carried by the pistons,
a valve-plate secured to the piston-case, dischargevalves located in opemn s in the valve-plate, and a head secured to e'valve- .plate, substantially as specified.
- 9. pump having a cam-case, a rotatable cam in the cam-case, means for rotating the "cam, a piston-case having a hub that fits the 'lntellOlk of the rotatable cam, pistons located in cylinders in the piston-case, the shanks of I I said pistons on the inside fitting grooves in rior of the cam and h the cam,"inletvalves.
the-hub and. on the outside fitting the inteaving rollers engaged by carried bythe pistons,
. a valve-plate secured .to the piston-case, discharge-valves located in ope inthe valveplate, and a head-plate secured to the valve-plate, substantially as'specifiedpump having a cam-case, a bearing at the'bottom of'thecam-case, an-arbor ex- 4 tendin through the bearing, a gear attached lOIA to theovver end of-thearbor outside of the -'a piston-case secured to the cam-case -c linders an it e rotation of the cam,'1n let-va ves named to open from and close against the cam-case, a c lindricalcam attached to the upper end of t y e arbor'inside of the cam-easei containing cglinders; pistons located in the adaptedto be reei rocatedby by the pistons, a valve-plate secured tothe p1stonacase, discharge-valves located 7 openings in the valve-plate, and a head 83"8 ate,
cured to thegvfiw ll specified.
11. Apump substantially as in cylinders in the case and provided with rolls engaging the cams, inlet-valves carried by the pistons, and discharge-valves held by the case, substantially as specified.
. 12. A pump having a case, a rotatable camin the case, means for rotating the can having case, a rotatable cylg inder in the case, cams secured tothe mterior of the rotatablecylinder, pistons located. 7
pistons having cylindrical heads and sermcylindrical shanks located in cylinders in the case,roll s mounted on the piston-shanks and ders in the case, theshanks of-the. istons" having rolls lying between the cam-r} s and having their outer faces fitlllllg thel1 itfl0l' Walls of the cam-ribs, inlet-valves carried by the pistons, and discharge-valves held by the case, substantially as specified. ,j
" 14. vA pump-having a tight case containing concentrically-arranged cylinders, arotatable cam located near one end of and lnclosed y parallel with the axes of the cylinders, means V in the-case, the axis of the cam extending or rotating the cam, pistons with fluid as' sages through them arranged in the cglin 91's in the case on one side of the earn an adapted to be ositively reciprocated by the rotation of t sages through the pistons carried by the p1s.- tons, and valves-controlling ope from the cylinders held by the case, substantially as specified. I
i v ARTHUR H. EDDY. Witnesses: I
Errmr. M. Lows.
e cam; valves controllingthe pas-