US1209740A

US1209740A - Piston-packing.

Info

Publication number: US1209740A
Application number: US5429115A
Authority: US
Inventors: Charles I E Mastin
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-10-06
Filing date: 1915-10-06
Publication date: 1916-12-26
Anticipated expiration: 1933-12-26

Description

C. i. E. MASTIN.

PISTON PACKING.

APPLIQATION man ocT. 6. 1915.

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CHARLES I. E. 'MASTUL 0F MIDLAND PARK, NEW JERSEY.

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application med october 6, 191;;5. Serial No. 54,291.

To all whom it may concern:

Be it known that l, CHARLES ll. E. Mas- ...Ti.N, a citizen of the United States, and

frcsident of Midland Park, county of Bergen, and State of New Jersey, have invented certain new and useful Improvements in Piston-Packing, of which the following is a specification.

This invention relates to a packing for piston rods and other moving partsof engines and machinery where a tight joint is required to prevent thepassage of steam or other fluid under pressure.

One of the mainl objects of the invention is to provide a packing of simple const rucf tion which would be durable and especially adapted for use under high pressures and high temperatures.'

Another object of the invention is to pro-- vide a packing containing lead inserts, and

to so secure the lead inserts in the packing that all danger of separation of the leadv from the fibrous and rubber portions of the packing isavoided. u Another object of the invention is'to so arrange the lead finserts that they will form a4v practically continuousannular lineI of contact between the lead and the moving partl to be packed.

Another object of the invention is to pro- .Vide corrugated lead inserts which are individually and independently wrapped with a suitable number of layers of rubbercoated fabric 'and then combined in the packing,v the said wrapped inserts being permanently secured between a suitable number of fiat layers of rubber-coated fabric. p

-Another object of the invention is to provide a acking having lead inserts, with an air cus ion whereby said packing will be rendered flexible and yielding to the desired degree. n

vThere are other objects and advanta es of the invention which will appear here1nafter.' ,c

ln the drawing, Figure 1 is a perspective View of a packing strip constructed in accordance with my invention; Fig. 2 a similar view of a packing strip, the air cushion and the fabric inclosing and binding strip being omitted; Fig. 3 a transverse sectional view of the lead inserts with their individual wrapping strips as they are arranged before being compressed in the completed packing strip; Fig. 4 y a transverse sectional' 4View of the strip as shown in Fig. 2, with a binding strip applied; Fig. 5 a detail view of a portion of the bias-cut fabric which is wound around the metal inserts; and Fig. 6 a similar view of a part of the bias-cut rubber-coated fabric of which the flat layers of the packing are formed.

The lead inserts l are corrugated as shown in Figs. 1 and 4, and each insert is individually wrapped with a suitable num- ,be'r of layers of rubber-coated fabric 2.

These wrapped inserts are assembled, as

suitable number of fiat layers of rubbercoated fabric 3. These assembled parts are then subjected to pressure to thoroughly unite all of the rubber parts and to form the packing into a substantially homogeneous mass, asshown in Fig. 2. The layers of fabric around the lead inserts are distorted and compressed sufficiently to reduce Ashown in Fig. 3, and placed between a I rangement ofthe inserts is to provide a. i

substantially continuous line of bearing betweenv the lead and the rod or other part to be packed. By` individually wrapping each corrugated lead insert they vwill be permanently anchored inthe packing and it will be impossible for themlto become loosened in use. The wrappings of rubbercoated fabric will become thoroughly interlocked with the 4corruagzated lead inserts when the packing strip ,is subjected to pressure as described. When the packing has been brought to the condition described it is in what is termed the green state, 'the rubber being then in a sticky or gum-like condition, :sufliciently adhesive to hold the )arts in their compressed condition. lf it 1s desired that the lead inserts shall be eX- posed upon the inner and outer surfaces of IMF@ bias-cut rubber-coated fabric wrapped about each of said inserts, the said inserts being arranged in a mass, bias-cut rubber-coated fabric layers forming the flat sides of the 5 packing, the mass of wrapped inserts lying between said fabric layers, whereby the ends of al1 the threads of the fabric in the packingwill be exposed on the wearing face of the packing.

In testimony whereof I hereunto aix -my 10 signature.

CHARLES I. E. MASTIN.