Joseph moseley and benjamin blundstone
US 425042 A
Description (OCR text may contain errors)
J. MOSELEY & B. BLUNDSTONEL ENGINE PAGKING.
No. 425,042. Patented Apr. 8, 1890.
TH: Nunmlwrens co., Pumu'mo., wAsnmm'oN, n. c.
UNITED STATES PATENT OFFICE.
JOSEPH MOSELEY AND BENJAMIN BLUNDSTONE, OF MANCHESTER, COUNTY OF LANCASTER, ENGLAND.
SPECIFICATION forming part of Letters Patent No. 425,042, dated April 8, 1890.
Application filed August 14, 1889. Serial No. 320,732. (No model.) Patented in England February 28, 1889, No. 3,567. and
March l2, 1889,11'0. 4,276.
T0 @ZZ whom it may concern:
Be it known that we, JOSEPH MosELEv and BENJAMIN BLUNDsToNE, citizens of the United Kingdom of Great Britain and Ireland, and residents of the city of Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in Engine-Packings, (for which we have obtained Letters Patent in Great Britain No. 3,567, dated February 28, 1889, and No. 4,276, dated March 12, 1889,) of which the following is a specification.
This invention relates to engine-packings; and these improvements consist in the combination and arrangement in the packing' of a metallic gauze element in such a manner as to preserve the flexibility and pliability of the packing, While at the saine time the firmness and durability due to the metallic element are secured tothe fullest extent.
In order that our invention may be more readily understood, We will proceed to describe it with reference to the accompanying drawings, in which- Figure I represents a plain sheet of metallic gauze; Fig. 2, a similar sheet in preparation for use in the construction of the packing, and Figs. 3, 4, 5, 6,7, and 8 variousforms of packing constructed according to this invention.
In each of the figures in Which the parts are represented, a is the metallic gauze. h is the outer layer or covering of the packing. c is the layer or layers of fabric used in coinbination with the metallic gauze, and d is a strip or core of india-rubber or. similar or suitable material.
The metallic gauze is first prepared by grooving, corrugating, or indenting it by rollers or other suitable means, and by preference parallel either with the warp or with the weft. The corrugated groove or indented sheet of metallic gauze is then cut diagonally or inbias, as indicatedin Fig. 2, into strips of suoli a width as may be required. These strips are used in the manufacture of the packing in addition to or in substitution for some of the layers or plies of asbestus or other suitable fabric ordinarily employed.
In the packing represented in Fig. 3 a strip so of the corrugated, indented, or grooved metallic gauze cut from the sheet, as hereiubefore described, is doubled with a strip of asbestus or other similar and suitable fabric, and the doubled material is then folded and refolded until the desired dimension is obtained. The packing is then enveloped in a covering of a fabric b, such as is ordinarily used for the purpose in the manufacture of known packings.
In the packing represented in Fig. i alternate strips of suitable textile fabric and of the prepared metallic gauze are cemented together in alternate layers. The strips thus secured together may be surrounded on three sides by a covering b of suitable textile material, so as to leave exposed the alternate edges of the metallic gauze and textile material along one edge. As shown in the drawings, a strip of india-rubber d is added to the 7o composite strips before 'the covering Y) is cemented on.
In constructing the packing represented in Fig. 5 we may first double or cement together a strip of the prepared metallic gauze and a 7 5 similar strip of textile fabric and roll them together, as represented in Fig. 8. This roll is then by suitable dies or other known means compressed into a square or prismatic form, and the packing is finally completed, as here- 8o inbefore described with reference to Fig. 1i.
In this form of packing, Fig. 5, the prepared metallic gauze forms the outside of the roll, and when therefore the packing is finished the metallic gauze is exposed on the wearing, surface, as indicated at a in the figure..
The packing illustrated by Fig. 6 resembles that shown in Fig. 3, except that a strip of india-rubber d is included thereon.
The circular packings, Figs. 7 and 8, are 9o made by double strips of the prepared metallic gauze and of suitable textile fabric rolled together. As indicated in Fig. 7, a core of india-rubber is included in the packing.
The prepared metallic gauze and the textile fabric may, when required, be doubled or secured together by cement or by other suitable means in a similar manner to that at present adopted for securing the different layers together in similar packings of ordinary construction.
It will be obvious that since the metallic gauze .is so prepared that the corrugations, in-
dentations, and grooves are diagonal in the strips which are employed in the construct ion they will also be diagonal (or spiral, if rolled) in the finished pac-king.
It is preferred to make the eorrngations, grooves, and indentations comparatively small and close together. No precise dimen sions need to be observed; but it the corrugations are about onel1alt millimeter deep and two millimeters apart for ordinary packing-s a very good resultivill be obtained. Other greater or less dimensions may be used when desired, or for larger or smaller paekings than the average.
The iinilentations iliade in the metallic gauze may be so acute as to nearly or com pletely sever the gauze into tapes or ribbons. In this ease we interrupt the acute indentations at inter 'als so that the severed or nearly severed portions may be held together at the points where the indentatimls are interrupted. A piece ol. metallic gauze prepared with these acute indentations is represented in lfig. El, where the vertical broken lines represent the interrupted imlentations and the diagonals represent the lines along which the acutely-indented gauze is cut into strips to be used in the manufacture of the packing. The interruptions between the acute indentations are at such frequent intervals that there shall at least be one such interruption in each line of indentation between eaeh diagonal cut. lVhen this precaution is taken7 the strip severed from the sheet by any diagonal eut will be held together by the parts which are not acutely indented or ineised.
rllhe corrugation otl the metallic gauze on the line ot` the Warp or *vveti't and the diagonal cutting give to the packing when completed a high degree ot' elasticity and pliability and great: durability.
The forms of the packings illustrated by the accompanying dra-wings are well known, and we therefore do not claim them apart from the arr.uigement therein and the hereinbeforealeseribed combination therewith of the prepared metallic gauze. '.lhe types illustrated are those of the paekings at present more generally in use, and they have been selected for illustration for this reason only; but our invention maybe applied to other Vforms and types of pac-,kings with equal advantage, and \ve desire it to be therefore understood that \ve do not limit our invention to the types and formsot packings illustrated by the drawings.
Having now particularly described and ascertained the nature of our said invention and in what. manner the same is to be performed, we declare that what we claim is* l. In engine-packings, the combination and arrangement of a layer or layers of textile `fabric with a layer or layers ot" metallic gauze preyiared by beingcorrugated, indented, or grooved, and cut diagonally into strips, substantialIy` as hereinbefore described.
2, ln engiiie-pzwliiiigs, a layer or layers, ply or plies, ot' metallic gauze ln'eliared by being corrugated, indented, or grooved, and arranged in the packing in such a n'ianner that the corrugations, indentations, and grooves are in a .spiral` Vor diagonal. direction, substantially as hereinbet'ore described.
.ln testimony that we claim the foregoing as our invention ive have signed our names in presence ot' two witnesses.
JOSEPH 1l( )SIIL'ICX BENJAMIN BLIINDS'IONE.
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