US1572632A

US1572632A - Compressor or pump

Info

Publication number: US1572632A
Application number: US20335A
Authority: US
Inventors: Zeno W Wicks
Original assignee: Worthington Pump and Machinery Corp
Current assignee: Worthington Pump and Machinery Corp
Priority date: 1925-04-03
Filing date: 1925-04-03
Publication date: 1926-02-09
Anticipated expiration: 1943-02-09

Description

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Z W WICKS COMPRESSOR OR PUMP Filed April. 5, 1925 E w A. mm

, Fein 9 1926.

latented F 9,' 1926i. I .i UNITED. STATES 1,572,632 Parana*--oi=1=lcr..l

ZENO W. WIOKS, OF FORT WORTH, TEXAS, ASSIGNOR TO WORTHINGTON4PUMP ANDv y MACHINERY COINOIR..ATION,l OF NEW YORK, N. Y., A(GORPORATION OF VIRGINIA.

COMPRESSOR OR IEUMIP.

To all whom it may concern.'

Be it known that I, ZnNo W. Wiens, a citizen of the United States, residin at FortiWorth, county of Tarrant, and tate of Texas, have invented certain new and useful Improvements in Compressors or Pumps, fully described and represented in the following specification and the accompanyiug drawings, forming a part of the same.

The present invention relates to improvements in compressors or pumps.

It is the' object of the invention to provide an improved plunger construction which will be found especially important as applied to plungers of the higher stage cylinders of air and gas compressors. By the use of the present arrangement side pressure on the stuffing boX packing and stresses tending to cause binding of the plunger head in the cylinder bore, are avoided in case of inisalinement of the plunger, which may be due to wear or other causes, while efficient cooling of the plunger head and the plunger rod throughout its length is secured. rllhe improvement thus provides an arrangement by which straight metallic packing, as well, of course, as other types of packing, may be used with advantage in the stuliing box, and by which liquid cooling of the stuffing box and oil supply therein for lubricating the plunger usually may be dispensed with, and

thus avoid danger of contaminating the'air l or gas being compressed.

ln the accompanying drawings forming a part of this specificatiomthere is shown in central section and vpartial elevation a compressor cylinder and a plunger and driving connection therefor embodying the invention in a preferred form and this conu struction will now be described in detail in. connection with said drawings, and the novel features of the invention then be specifically pointed out in the claims.

Referring to the drawings, 11 indicates a compressor cylinder provided with the usual liner 12, suction and

discharge valves

13, 14, respectively, communicating with the cylinder clearance, and a stuffing box 15. Plunger rod 1 preferably and as shown has formed integrally therewith a plunger head 2 arranged to work within the liner 12, although it will be understood that the plunger head 2 may be formed separately from and secured to the rod 1 in any desired manner. According .to the arran' ement shown, the outer end of the rod l 1s connected to driving'yoke 3, the inner side of the latter being arranged to abut against afiange 4. formed on such rod, and the end of the rod passing through the yoke and threaded to receive a nut or nuts 5, two of the latter being shown in the present in stance in order to secure locking engagement thereof. Secured to the plunger head 2, as 'by threaded engagement therewith as shown or otherwise, is a tubular member 6, preferably formed of seamless steel and the exterior surface of which preferably is highly polished to secure a smooth running fit with the stuffing boxpacking, The member 6 at its outer end is not rigidly connected to the rod l, but an annular spaceisprou vided between these parts at such point, so asl to permit of transverse movement of the plunger rod 1 with respect to the tube 6, as iereafter explained. The end of the tube 6 is, however, shown as closed by a hood 7 of rubber orl other flexible material, which may be secured in place and in fluid tight engagement with the tube 6 and flange 4i by metal bands under which'the hood material is clamped, which are held in place by screws' taking into the flange 4 and tube 6. i

lt will be obvious from the construction so far described that the tubular member 6, on the effective. strokes of the plunger l, will be pulled through the stuffing ox rather than pushed therethrough thus securing easier functioning of tlieseunning parts, while the provision for transverse movement of the outer end of the lunger 1 with ren spect to the tube 6, efliciently provides for selffalinement of the member 6 with respect to the cylinder bore should the plunger l, for any reason, be thrown out ofv alinement. Sidepressure on the stuffing box acking by the lunger rod is therefore avoi ed, so that straight metallic packing may be used with advantage. Vihilev the self-alining feature above 'referred to will efficiently function ,to compensate for inaccuracies in alinement resulting from wear of the arts or other causes, plunger rod 1 prefere ly will be so proportioned with respect to its len h and the total load to be carried by the hea 2, that the rod will possess a limited degree of flexibility. `Thus, on slight misalinement thel peripheral running surface on plunger head 2 will remain parallel with the cylinder bore without being subjectedto any such stresses as might tend `to cause excessive friction and wear of these parts. With the construction so far described, it will be obvious that a chamber 8 of ample size is provided between the plunger rod 1 and the inner wall of the tubular member 6. According to the arrangement shown, coolin fluid is maintained in this chamber anV constantly circulated therethrough, such fluid preferably and as shown being admitted thereto by providing a exible pipe a attached to the outer end of the plunger rod 1 and arranged to communicate with a central bore 9 extending the full length of such rod andfwell into the head 2 thereon, the cooling fluid entering the chamber 8 by way of passages 10. The plunger rod and head are thus first cooled by the entering fluid and the maximum effect of such cooling fluid on the head 2 thus obtained, while the rod 1 and tubular member 6 are effectively cooled throughout their length. The uidin chamber 8 passes oil through a iiexible tube b leading to any desired point. While the stuing box construction shown includes a lantern ring and passages communicating with the chamber therein thus formed so that cooling fluid or lubricant may be circulated therein, it will .-'be found that with the present arrangement above described this cooling or lubricating means may be dispensed with in most cases, as eilicient lubrication of the plunger as at present constructed may in .most cases be secured simply by applying a few drops 'of oil to the plunger-rod at a point outside the stalling box when the plunger rod is at the limit of its outstroke.

While the invention has been described in connection with a compressor cylinder Aand its plunger and driving connection therefor, it is obvious that the arrangement herein shown and described is applicable with advantage to apparatus other than air or gas compressors in which cooling of the plunger with provision for self-alinement thereof'are important, and it will be understood, furthermore, that various changes in the form and arrangement of the parts shown and described may be made while still retaining the invention defined by thel claims.

' ble plunger rod within said tubular member arranged tovdrive said head, and means for 1,57a,es2

plunger rod and tubular member.

3. A compressor or pump plunger, comprising, in combination, a plunger head, a tubular member secured to said head, a flexible plun er rod within said tubular member arrange to drive said head, a passage in (said plunger rod connecting with the c 1amber between the rod and tubular member,

and means for continuously circulating cooling liuid through the plunger rod and chamber. Y

4. A compressor or pump plunger, comprising, in combination, a plunger head, a tubular member secured to said head and arranged to have a running fit with the cylinder bore, a plunger rod within said tubular member arranged to drive said head, a passage in the plunger hea and communicating with thc chamber between the tubular member and said plunger rod', and means for circulating (ooling fluid through said passage and cham- 5. A compressor or pump plunger, com` prising, in combination, a plunger head, a tubular member secured to said head, a plunger rod within said tubular member arranged to drive said head, passages in the plunger rod communicatin with the plunger head and the chamber etween said tubular member and-the lunger rod, and flexible connections for clrculating cooling fluid through said passages and chamber.

6. A compressor or pump plunger, comprising, in combination, a plunger head, a tubular membergsecured to said head and arran ed to have a running fit` with the cyliner bore, a plunger rod within said tubular member arranged to drive said head, passages in the plunger rod arranged to suppl cooling fluid to said head and the cham r between said tubular member and plunger rod, and flexible connections arranged to deliver cooling fluid to the plunger rod passages and carry off the luld from said chamber..

In. testimony whereof, I have hereunto set'my hand.

lznuo w. wIcKs.

plunger rod extending into the.

said