US773949A - Packing for throttle-valve stems. - Google Patents

Packing for throttle-valve stems. Download PDF

Info

Publication number
US773949A
US773949A US21360304A US1904213603A US773949A US 773949 A US773949 A US 773949A US 21360304 A US21360304 A US 21360304A US 1904213603 A US1904213603 A US 1904213603A US 773949 A US773949 A US 773949A
Authority
US
United States
Prior art keywords
packing
throttle
same
valve stems
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US21360304A
Inventor
Samuel Lockhart
Original Assignee
Samuel Lockhart
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samuel Lockhart filed Critical Samuel Lockhart
Priority to US21360304A priority Critical patent/US773949A/en
Application granted granted Critical
Publication of US773949A publication Critical patent/US773949A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/18Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
    • F16J15/20Packing materials therefor

Description

PATENTED NOV. 1, 1904.
S. LOGKHART.
PACKING FOR THROTTLE VALVE STEMS.
APPLICATION FILED JUNE 22, 1904.
N0 MODEL.
WITNESSES UNITED STATES Patented November 1, 1904.
SAMUEL LOCKHART. OF PITTSBURG, PENNSYLVANIA.
PACKING FOR THROTTLE-VALVE STEIVIS.
SPECIFICATION forming part of Letters Patent No. 773,949, dated November 1, 1904.
Application filer- June 22, 1904. Serial No. 213,603. (No model.)
To all whom it may concern.-
Be it known that I, SAMUEL LOOKHART, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Packings for Throttle-Valve Stems; and I do hereby declare thefollowing to be a full, clear, and exact description thereof.
My invention relates to packings for throttle-valves, and has special reference to such packings as are used in the packing of locomotive throttle-valve stems and other like steam-valve stems.
The object of my invention is to provide a cheap, simple, and eifective packing for such purposes and uses, as well as one which will not become worn by friction or burn out and will reduce leakage to a great extent.
A further object is to produce such a packing which can be easily and quickly placed around the stem, as well as one which can be made and handled as a single piece or article.
My invention consists, generally stated, in the novel composition, arrangement, construction, and combination of parts, as hereinafter more specifically set forth and described, and particularly pointed out in the claims.
To enable others skilled in the art to which my invention appertains to make and use my improved packing for throttle valves, I will describe the same more fully, referring to the accompanying drawings, in whicl Figure 1 is a longitudinal section ofathrottle-valve stufling-box, showing my improved packing applied therein. Fig. 2 is aside view of said packing. Fig. 3 is an end view of the same. Fig. 4 is a longitudinal section of the same. Fig. 5 is a cross-section thereof, and Figs. 6 and 7 are sections of another form of the same.
Like symbols of reference herein indicate like parts in each of the figures of the drawings.
As illustrated in the drawings, 1 represents the stuffing-box of the ordinary throttle-valve, and 2 the throttle-stem passing through the same, to which the throttle (not shown) is connected in the usual manner for operating the same. WVithin the stuffing-box 1 is the usual packing-cavity 3, which extends around the stem 2 and is provided with the inclined end faces L a, formed on the follower-gland 5 and inner gland 5, respectively, suchinner gland being secured within the boiler a in the ordinary manner, and the follower-gland is removably bolted thereto by the bolts 5'.
My improved packing 6 is of tubular shape and is made of hard rubber, although graphite or soapstone can be used to form the same, and such packing is banded or formed together from the proper amounts or proportions of these ingredients or materials around a mandrel or other suitable device and by any suitable treating or mixing for uniting or banding the same together which will form the body portion 6, the beveled ends 6, and the opening or interior cavity 7 through the same. If desired, a thin lining of graphite, such as is shown at 8, can be formed within the interior cavity 7, and canvas, cotton duck, or other suitable fabric 9 can be placed around and throughout a portion of the length of the body portion 5, as shown in Figs. 6 and 7 My improved packing being thus made in a solid form can be placed within the cavity 3 of the stuffing-box 1 by any suitable means and in any suitable manner and when in place conforms to said cavity Sin shape and size, so that the beveled orinclined ends 6 on said packing fit against like inclined faces 4 L in said cavity and on the glands 5 and 5, While the opening 7 through the said packing is of the same size and fits around the stem 2 by its lining 8 when used.
It will be evident that by reason of my improved packing'being made in solid form that the same can be easily and quickly placed within the packing-cavities when desired and that if necessary the same can be split longitudinally or vertically for the purpose of passing and covering any projections within the packing-cavity or upon the stem. It will also be evident that practical experience in the use of my improved packing for throttlevalves in connection with locomotives has proven that it will last longer than the'ordinary packing now used for like purposes and will overcome the friction in the stem to a very large extent. The packing can be easily and cheaply manufactured, will not burn out,
and does not require any pressure on the same to form a packed joint or be used in any manner but its original shape, while at the same time such a packing is strong and durable and does not require any further attention when once in place. By the fabric not reaching the extreme ends of the packing all liability of the packing becoming injured by steam or water is overcome and the packing will still retain its strength by such fabric.
What I claim, broadly, as my invention, and desire to secure by Letters Patent, is-
1. As a new article of manufacture, a pack ing for throttle-valve stems formed of a solid rubber tube, the interior diameter of which is of the same size as the exterior diameter of the stern and the exterior diameter of which is of the same size as the diameter of the packingcavity, said tube having beveled ends thereon for fitting against like end faces in said cavity and a thin lining of graphite on interior surface of said tube.
2. As a new article of manufacture, a packing for throttle-valve stems formed of a solid rubber tube, the interior diameter of which is of the same size as the exterior diameter of the stem and the exterior diameter of which is of the same size as the diameter of the packing-cavity, said. tube having beveled ends for fitting against like end faces in said cavity, and a suitable fabric extending around and through the body of said tube.
3. As a new article of manufacture, a paclu SAMUEL LOCKI-IART.
\Vitnesses:
J. N. (100103, ROBERT I-I. AxTHuLM.
US21360304A 1904-06-22 1904-06-22 Packing for throttle-valve stems. Expired - Lifetime US773949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US21360304A US773949A (en) 1904-06-22 1904-06-22 Packing for throttle-valve stems.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21360304A US773949A (en) 1904-06-22 1904-06-22 Packing for throttle-valve stems.

Publications (1)

Publication Number Publication Date
US773949A true US773949A (en) 1904-11-01

Family

ID=2842434

Family Applications (1)

Application Number Title Priority Date Filing Date
US21360304A Expired - Lifetime US773949A (en) 1904-06-22 1904-06-22 Packing for throttle-valve stems.

Country Status (1)

Country Link
US (1) US773949A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394023A (en) * 1982-09-29 1983-07-19 Daniel Industries Inc. High temperature valve stem packing with coiled graphite seal rings
US4789168A (en) * 1985-03-11 1988-12-06 Achim Daume Sealing bush with a sealing packing for high pressures and temperatures

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394023A (en) * 1982-09-29 1983-07-19 Daniel Industries Inc. High temperature valve stem packing with coiled graphite seal rings
US4789168A (en) * 1985-03-11 1988-12-06 Achim Daume Sealing bush with a sealing packing for high pressures and temperatures

Similar Documents

Publication Publication Date Title
US773949A (en) Packing for throttle-valve stems.
US574353A (en) Piston-rod packing
US770525A (en) John e
US450518A (en) Stuffing-box
US1132123A (en) Universal joint.
US1302022A (en) Expansion-joint.
US505703A (en) Packing-gasket
US778635A (en) Rod-packing.
US376401A (en) benjamin
US572053A (en) Piston-rod packing
US583451A (en) Rod-packing
US827803A (en) Stuffing-box.
US564269A (en) Engine-cylinder
US126553A (en) Improvement in pipe-couplings
US967235A (en) Packing.
US1444457A (en) Packing
US275484A (en) William haas
US137444A (en) Improvement in packings for piston-rods
US888064A (en) Steam-tight joint for rotary rods.
US733588A (en) Piston-rod and valve-stem packing.
US648400A (en) Metallic packing.
US505369A (en) Of philadelphia
US745908A (en) Piston-rod packing.
US266031A (en) Wflltam haas
US1526628A (en) Gland packing