US1891083A

US1891083A - Air compressor

Info

Publication number: US1891083A
Application number: US313213A
Authority: US
Inventors: Adiel Y Dodge
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-10-18
Filing date: 1928-10-18
Publication date: 1932-12-13
Anticipated expiration: 1949-12-13

Description

A. Y. DODGE AIR COMPRESSOR Dec. 13, 1932.

Filed OC't. 18, 1928 Patented has. is, iesa 3,391

ABEL Y. DGDGE, 01" SOUTH BEND, INDIANA are cor-arnnsson Application filed October 18, 1928. Serial No. 813,213.

My invention relates to air compressors. in its upper position fluid will be supplied to One of the objects of my invention is to the cran i case chamber at substantially the increase the capacity of a compressor without ame P es re as eXlStS in the manifold. As

increasing the "cost materially. the piston moves downward the inlet port 8 V 5 A further ob ect is to increase the thermal 1s almost immediately cut ofi' from the fluid 55 cfiiciency of a compressor. supply port and thereafter the fluid is com- A further object is to providea compressor pressed in a crank case chamber until the which will be particularly advantageous in p n e c es I s lowermost position, as

refrigeration systems. shown in Fig. 2. During this downward Fu th bj t ill appear f th d m vement of the piston fluid has been supscription and l im, plied to the cylinder above the piston past In the drawing, in which an mb di t. the lightly held inlet valve 2 so that just of my inventio i h n, before the piston uncovers the port the res- Fig. 1 i a verti al ti th h an i sure in the cylinder above the piston will be 15 compressor; and substantially that in the manifold 10.

h Fig. 2 is a section of part of the cylinder AS 500D, Q a t e piston uncovers n the same plane as that of Fig. 1 but showh p t 13 f the Connecting passe e 9 fluid mg th pi ton in it lowermost iti Wlll rush from the crank case cham or to the In carrying ut my i ti 1 tili d th cylinder above the piston until the pressure is go crank case of th compressor 35 e preoomequalized. Shortly thereafter the piston bepressor cha ber, gins its upward movement and the precom- Referring to the d i i d t il, th pressed fluid above the piston is forced out struction shown therein comprises a cylinder P the eXhiHlSt Valve 3 into any Suitable 1 having inlet valve 2 and outlet valve 3, a rv ir r compressed fluid system, the inas piston 4 operating in said cylinder 1, a conlet ve 2 acting as a check or nonreturn necting rod 5 for operating said piston, a Valve ring his movement. crank 6 for actuating the connecting rod, a t Will be noted that the inlet port l to the fluid-tight crank case 7 for the crank 6, a cy inder and he inle port 8 to the crank port 8 for supplying fluid to th ra k case case are both connected with the same maniso chamber to be precompressed therein. a pasfold sage 9 for the fluid from the crank case cham- This Construction is of special advantage her to the cylinder above the-piston and a in certain types of refrigeration systems in manifold 10 for supplying fluid both to the which the fluid to be compressed must be in cylinder above thepiston and to the crank a closed system.

as case chamber below the piston. While I have shown but one form of my The inlet valve has a light spring 11 which invention, various other forms will occur to will allow the valve 2 to op n easily t ad it those skilled in the art and consequently this fluid above the piston as th piston mov s invention is to be limited only by the scope d dl Th h t Valve 3 i pro of the appended claim and the prior art.

4% vided with a light spring 12 which permits I Claim! the fluid to be exhausted past it as the piston A fluid compressor, comprising a cylinder, moves upward. The inlet port 8 to the crank a piston operating in said cylinder, a connectcase is so positioned that it is closed except ing rod pivotally connected with said piston when the piston is in its extreme upper posifor actuating it, a crank for actuatin said 45 tion, as shown in Fig. 1, and the port for the connecting rod, and a fluid-tight oran r case connecting passage 9 is so positioned that it for-said crank, the effective length of said is closed by the piston except that when the cylinder being substantially twice the length piston is in its extreme lower position, as of the crank throw and the eifective length shown in Fig. 2. of said piston being substantially one-half 59 With this construction, when a piston is the effective length of the cylinder, said cylinder' heving inlet and outlet ports for'the space at the outer end of the cylinder, and having an inlet port just closed by the outeredge of the piston when the piston is in its-inner position and another port just closed' by the inner edge of the piston when the piston is in its outer position, a conduit afiording communication between the crank case and said last port, and a manifold for supplying both said inlet ports.

In witness whereof, I have hereunto subscribed my name.

ADIEL Y. DODGE.